TW202417226A - A molding method and structure that integrates various heterogeneous materials by hot pressing - Google Patents

Abstract

A molding method and structure for integrating multiple heterogeneous materials by hot pressing, which mainly provides a hot pressing mold, and then sequentially places a shell, a cover plate and a hot pressing material into the hot pressing mold, and then heats and presses the hot pressing mold to melt the hot pressing material in the hot pressing mold, and then the shell, the cover plate and the hot pressing material can form an integrated design, and the process is simplified, so that when it is applied to a control panel or an operating panel, it can more effectively achieve the waterproof and dustproof effects.

Description

A molding method and structure that integrates various heterogeneous materials using hot pressing

The present invention relates to a molding method and structure for integrating various heterogeneous materials by hot pressing. Various heterogeneous materials are integrated by hot pressing and can be applied to control panels or touch panels, so that the panels have both waterproof and dustproof effects.

The known control panel or touch panel is mainly composed of an upper shell, a lower shell, a panel and a circuit board. A through hole is reserved at the position of the upper shell for the panel to be installed. The panel is then glued to the position of the through hole by gluing. The circuit board is installed in the installation space between the upper shell and the lower shell, and the panel is electrically connected so that it can be controlled through the panel.

However, when the panel is installed at the through hole position of the upper shell, adhesive is usually applied around the through hole to adhere and fix the panel to the periphery. In this way, when the adhesive is applied unevenly, in addition to affecting the flatness of the panel, it is also easy to form a gap between the panel and the upper shell, causing small molecules such as water vapor, moisture or dust to pass through these gaps into the installation space between the upper shell and the lower shell, thereby causing damage to the circuit board; or causing water vapor to condense on the back of the panel, forming water mist, thereby affecting the transparency of the panel and remaining in the panel and unable to be removed.

In addition, when the upper shell and the lower shell are mounted on each other, a waterproof gasket is generally installed between the inner parts of the upper shell and the lower shell, the purpose of which is mainly to prevent water vapor, moisture or dust and other small molecules from entering the installation space through the joint between the upper shell and the lower shell, thereby achieving waterproof and dustproof effects.

However, when the waterproof gasket is of the wrong size or is not installed correctly, a crack will also be created between the upper shell and the lower shell, which will also lose the waterproof and dustproof effects.

Therefore, how to provide a molding method and structure that integrates various heterogeneous materials by hot pressing, so that various heterogeneous materials can be integrated by hot pressing, which can be applied to control panels or touch panels, and simplify the manufacturing process to save labor hours, while making the panel waterproof and dustproof at the same time, is the problem that this case aims to solve.

The main purpose of the present invention is to provide a molding method and structure for integrating various heterogeneous materials by hot pressing, so that various heterogeneous materials can be integrated by hot pressing, which can be applied to control panels or touch panels, so that the panels have both waterproof and dustproof effects.

To achieve the above-mentioned purpose, the present invention first provides a molding method for integrating a plurality of heterogeneous materials by hot pressing, the method comprising the following steps: providing a hot pressing mold, the hot pressing mold having a molding space therein, the hot pressing mold being composed of an upper mold and a lower mold, the molding space being formed by combining the upper mold and the lower mold; sequentially placing a shell, a cover plate and a hot pressing material into the molding space, and forming a gap between the shell and the cover plate, then heating the hot pressing mold, and passing the hot pressing mold through the hot pressing mold. The hot-pressed material is pressurized and heated. When the hot-pressed material is heated and pressurized by the hot-pressed mold, the hot-pressed material is melted and filled in the molding space, and flows to the outside of the shell and the gap between the shell and the cover plate at the same time. The hot-pressed mold is then cooled, so that the hot-pressed material is gradually cooled and shaped in the molding space. Finally, the hot-pressed material is covered on the outside of the shell and filled in the gap, and the shell and the cover plate are combined into one body through the hot-pressed material.

In one embodiment, the housing is made of one of a plastic material or a metal material.

In one embodiment, the cover is made of one of glass, acrylic or PC.

In one embodiment, the hot-pressed material is made of unvulcanized rubber (REBBER).

In one embodiment, the melting point of the shell and the cover is higher than the melting point of the hot pressing material, so as to avoid the melting of the shell and the cover when the hot pressing mold is heated, so as to maintain the integrity of the shell and the cover.

In one embodiment, the surface of the shell covered by the hot-pressed material has been pre-treated to increase the bonding force between the shell and the hot-pressed material.

To achieve the above-mentioned purpose, the present invention further provides a structure that integrates a plurality of heterogeneous materials by hot pressing, and the structure includes: a shell, a cover plate, and a hot pressing material. The shell has an outer surface, and a through hole is provided at the center of the shell. The cover plate covers the through hole of the shell and forms a gap with the shell. The hot pressing material is coated on the outer surface of the shell after heating and pressurizing, and fills in the gap, and the shell and the cover plate are combined into one body by the hot pressing material.

In one embodiment, the shell further has an inner surface, the shell is formed with at least one mounting groove on the inner surface, and the bottom of the mounting groove has a connecting hole penetrating the shell, so that the hot-pressed material can pass through the outer surface through the connecting hole and extend into the mounting groove.

In one embodiment, the shell is further provided with at least one pressing through hole, the pressing through hole also penetrates the shell, and the hot pressing material forms a pressing connecting rod at the center of the pressing through hole, and the pressing connecting rod extends through the pressing through hole and protrudes on the inner surface.

In one embodiment, a mounting platform is further recessed on the housing, and the through hole is located at the center of the mounting platform, and the mounting platform is used to divide the outer surface into a first outer surface and a second outer surface slightly lower than the first outer surface, the cover plate covers the second outer surface, and the gap is formed between the second outer surface and the cover plate.

Compared with the prior art, the present invention has the following advantages:

1. The present invention heats and presses the hot-pressed material, and then molds the shell and the cover plate to form a whole. This prevents a gap from forming between the shell and the cover plate, and the hot-pressed material can more effectively and completely cover the outer surface of the shell, thereby achieving better waterproof and dustproof effects.

2. The hot-pressed material enters the mounting groove through the connecting hole, and the mounting groove can adopt a ring-shaped design, surrounding the entire inner surface of the shell, thereby replacing the traditional waterproof gasket to increase the waterproof and dustproof effect of the shell during installation.

10: Hot pressing mold

11: Upper mold

12: Lower mold

13: Molding space

14: Pressurized surface

15: Mold cavity

16: Support platform

20: Shell

21: Perforation

22: External surface

23: Inner surface

24: Installation platform

25: First external surface

26: Second external surface

27: Mounting slot

28: Connecting hole

29: Press through the hole

30: Cover plate

40: Hot pressing material

41: Stopper

42: Press the connecting rod

50: Control Panel

51: Press area

60: Lower shell

61: Side wall

70: Control box

80: Display screen

Figure 1 is a cross-sectional schematic diagram of the integrated invention.

Figure 2 is a schematic cross-sectional view of the hot pressing mold of the present invention before closing the mold.

Figure 3 is a schematic cross-sectional view of the hot pressing mold after the mold is closed.

Figure 4 is a cross-sectional schematic diagram of the hot pressing mold of the present invention after cooling and opening the mold.

Figure 5 is a sample diagram of the first implementation of the present invention.

Figure 6 is a schematic cross-sectional view of Figure 5.

Figure 7 is a partially enlarged schematic diagram of Figure 5.

Figure 8 is a sample diagram of the second embodiment of the present invention.

Figure 9 is a schematic cross-sectional view of Figure 8 after combination.

Figure 10 is a partially enlarged schematic diagram of Figure 9.

Figure 11 is a diagram showing the third embodiment of the present invention.

In order to enable the review committee to further understand the technology, means and effects adopted by the present invention to achieve the intended purpose, the best feasible implementation examples are given and detailed descriptions are provided with drawings. It is believed that the purpose, features and advantages of the present invention can be understood in depth and concretely.

As shown in Figures 1 to 4, a molding method of the present invention is used to integrate a variety of heterogeneous materials by hot pressing. The molding method mainly provides a hot pressing mold 10, and the hot pressing mold 10 is applied to a hot pressing molding machine (known technology, not shown in the figure). The hot pressing mold 10 is composed of an upper mold 11 and a lower mold 12. When the upper mold 11 and the lower mold 12 are molded together, a molding space 13 is formed inside the hot pressing mold 10. The upper mold 11 is formed with a pressurizing surface 14 facing the lower mold 12, and the lower mold 12 is formed with a mold cavity 15 in which a shell 20, a cover plate 30 and a hot pressing material 40 can be placed in sequence. The molding space 13 is formed by the pressurizing surface 14 and the mold cavity 15. The mold cavity 15 can be configured according to the shape of the shell 20, so that the shell 20 can be more effectively installed in the mold cavity 15.

In this embodiment, the housing 20 has a through hole 21 at the center thereof, and the housing 20 has an outer surface 22 formed around the through hole 21 and an inner surface 23 opposite to the outer surface 22, and the thickness of the housing 20 is formed between the outer surface 22 and the inner surface 23. It is worth mentioning that the housing 20 is further provided with a mounting platform 24 recessed from the outer surface 22 toward the inner surface 23, the through hole 21 is provided on the mounting platform 24, and the outer surface 22 is divided into a first outer surface 25 and a second outer surface 26 slightly lower than the first outer surface 25 by the mounting platform 24, the second outer surface 26 is adjacent to the periphery of the through hole 21, and the first outer surface 25 surrounds the periphery of the second outer surface 26. In this embodiment, the housing 20 is pre-formed, and the housing 20 can be pre-formed from one of a metal material or a plastic material.

The cover plate 30 is used to cover the through hole 21 and form a gap with the outer surface 22 of the housing 20. In this embodiment, the cover plate 30 is mainly arranged above the mounting platform 24, and the outer diameter of the cover plate 30 is slightly smaller than the inner diameter of the mounting platform 24, so that the gap can be formed between the cover plate 30 and the first outer surface 25 and the second outer surface 26, and the surface of the cover plate 30 is slightly higher than the first outer surface 25. The cover plate 30 is also pre-formed and can be pre-formed by one of the materials such as glass, PC or acrylic.

The hot-pressed material 40 is made of unvulcanized rubber (REBBER). Before the hot-pressed material 40 is placed in the molding space 13, the hot-pressed material 40 is in a semi-solid state before undergoing the heating and pressurizing process.

When the shell 20, the cover plate 30 and the hot-pressed material 40 are sequentially placed into the molding space 13, the shell 20 is first installed in the mold cavity 15 of the lower mold 12, and then the cover plate 30 is placed in the mold cavity 15. In order to form the gap between the shell 20 and the cover plate 30, a support platform 16 is further provided in the mold cavity 15 of the lower mold 12, which can pass through the through hole 21 of the shell 20 and is used to support the cover plate 30. The height of the support platform 16 is slightly higher than the second external surface 26 but slightly lower than the first external surface 25. In this way, when the cover plate 30 is placed on the support platform 16, the gap will be formed between the cover plate 30 and the first external surface 25 and the second external surface 26. Next, the hot-pressed material 40 is placed into the mold cavity 15, and finally the upper mold 11 is driven by the hot-pressing molding machine to move the upper mold 11 toward the lower mold 12 and cover the lower mold 12, so that the upper mold 11 and the lower mold 12 form a clamped state.

It is worth mentioning that in order to maintain the stability of the shell 20 and the cover plate 30 during molding, the pressure surface 14 of the upper mold 11 is arranged relative to the position of the support platform 16, and the pressure surface 14 slightly protrudes from the lower surface of the upper mold 11, so that a difference is formed between the pressure surface 14 and the lower surface, and when the upper mold 11 and the lower mold 12 complete the mold closing operation, the cover plate 30 will be clamped between the pressure surface 14 and the support platform 16, and the outer periphery of the cover plate 30 will protrude into the molding space 13. Therefore, when the upper mold 11 and the lower mold 12 are in the mold closing operation, the hot pressing mold 10 will be heated and pressurized. In the mold closing process, the upper mold 11 will first heat and pressurize the hot pressing material 40, so that the hot pressing material 40 in a semi-solid state will gradually melt in the molding space 13, and when the mold closing operation is completed, the hot pressing material 40 will be completely melted in the molding space 13 and fill the entire molding space 13. In this way, the outer surface 22 of the shell 20 and the outer periphery of the cover plate 30 exposed inside the molding space 13 will be completely covered by the hot pressing material 40.

Finally, when the hot pressing mold 10 cools down, the hot pressing material 40 will also solidify and form in the forming space, so when the hot pressing mold 10 is opened, the shell 20 and the cover plate 30 can be combined into one body through the hot pressing material 40. The thickness of the hot pressing material 40 after forming can be obtained by improving the forming space 13 of the hot pressing mold 10 according to different product characteristics. Furthermore, it can ensure that there is no gap between the shell 20 and the cover plate 30, so that water vapor, moisture or dust molecules enter the inside of the shell 20 through the cover plate 30 and the through hole 21, thereby more effectively achieving the waterproof and dustproof effect.

In addition, in order to ensure the stability of the connection between the hot pressing material 40 and the shell 20 and the cover plate 30, the present invention will pre-treat the shell 20 and the cover plate 30 at the position covered by the hot pressing material 40 with an interface treatment agent (PRIMER) to increase the connection effect between the shell 20, the cover plate 30 and the hot pressing material 40. In the present invention, the melting point of the shell 20 and the cover plate 30 will be higher than the melting point of the hot pressing material 40, so as to avoid the shell 20 and the cover plate 30 from accidentally melting during the heating and pressurization process when placed in the hot pressing mold 10, so as to maintain the integrity of the shell 20 and the cover plate 30.

As shown in FIGS. 5 to 7, a control panel 50 formed by the present invention is shown. The control panel 50 is also formed integrally by the housing 20, the cover plate 30 and the hot-pressed material 40. However, the control panel 50 mainly has a mounting groove 27 formed around the inner surface 23 of the housing 20, and the bottom of the mounting groove 27 has at least one The connecting hole 28 penetrates the shell 20 so that the connecting hole 28 can penetrate to the first outer surface 25. In this way, when the hot-pressed material 40 is subjected to the aforementioned heating and pressurization, in addition to being coated on the outer surface 22 of the shell 20, the hot-pressed material 40 will also pass through the connecting hole 28 and fill into the mounting groove 27, thereby forming a stopper 41 in the mounting groove 27. Since the mounting groove 27 surrounds the periphery of the inner surface 23, after the stopper 41 is formed, the same stopper 41 will surround the inner surface 23 of the shell 20.

In addition, the control panel 50 may also be formed with at least one pressing area 51, so that a pressing action can be performed outside the control panel 50 through the pressing area 51. In order to form the pressing area 51, a pressing through hole 29 is reserved in advance on the housing 20, so that the hot pressing material 40 forms a pressing connecting rod 42 in the pressing through hole 29 during the heating and pressurizing process, and the pressing connecting rod 42 passes through the pressing through hole 29 and extends to the inside of the housing 20.

As mentioned above, whether the stopper 41 or the pressing area 51 is formed, the hot pressing material 40 can be formed under heating and pressurization by reserving space in the mold cavity 15 of the lower mold 12, so that the control panel 50 can be formed integrally by the shell 20, the cover plate 30 and the hot pressing material 40 after heating and pressurization.

As shown in Figures 8 to 10, after the control panel 50 is formed, it can be installed on a lower shell 60 to form a control box 70. The lower shell 60 has a surrounding side wall 61 formed around it. The side wall 61 is arranged corresponding to the mounting groove 27. When the control panel 50 and the lower shell 61 are assembled with each other, the side wall 61 can extend into the mounting groove 27, and the top end of the side wall 61 can abut against the stopper 41 in the mounting groove 27.

It is worth mentioning that the stopper 41 is formed by the hot-pressed material 40 and is formed by a rubber material. Therefore, when the top of the side wall 61 abuts against the stopper 41, they can be tightly abutted against each other. In this way, it can effectively prevent moisture, water vapor and dust molecules from entering the control box 70 through the shell 20 and the lower shell 61, thereby making the control box 70 have a better waterproof and dustproof effect. The aforementioned push rod 42 can extend to the inside of the control box 70. When a circuit board (known technology, not shown in the figure) is provided inside the control box 70, it can be linked with the push switch on the circuit board through the push rod 42.

Finally, as shown in FIG. 11 , the cover plate of the present invention is further made of glass, and a display screen 80 can be arranged below the cover plate, so that the image can be displayed on the cover plate 30 through the display screen 80.

In summary, the present invention uses a hot pressing method to form a plurality of heterogeneous materials into an integrated molding method and structure, which can be applied to the control panel 50 or the remote control panel and the like. The integrated design can make the control panel 50 or the remote control panel and the like have better waterproof and dustproof effects, and the waterproof effect can reach the level of IP68. At the same time, it can effectively improve the traditional processing steps such as bonding, thereby simplifying the manufacturing process to save labor hours, thereby greatly reducing the production cost. The integrated design between the housing 20, the cover 30 and the hot pressing material 40 can avoid the generation of gaps, thereby reducing the problem of dirt and grime. Therefore, the present invention is a completely different structural display and molding method from the prior art.

The above is a detailed description and diagram of the preferred embodiment of the present invention, and is not intended to limit the present invention. The entire scope of the present invention shall be subject to the following patent scope. All the spirit of the patent scope and its similar variations and similar structures shall be included in the present invention.

10: Hot pressing mold

11: Upper mold

12: Lower mold

14: Pressurized surface

15: Mold cavity

16: Support platform

20: Shell

21: Perforation

22: External surface

23: Inner surface

24: Installation platform

25: First external surface

26: Second external surface

30: Cover plate

40: Hot pressing material

Claims (10)

A molding method for integrating multiple heterogeneous materials by hot pressing, the method comprising the following steps: A hot pressing mold is provided, wherein the hot pressing mold has a molding space, which is composed of an upper mold and a lower mold, and the molding space is formed by combining the upper mold and the lower mold; A shell, a cover plate and a hot pressing material are sequentially placed in the molding space, and a gap is formed between the shell and the cover plate. Then, the hot pressing mold is heated, and the hot pressing material is pressurized by the hot pressing mold. When the hot pressing material is heated and pressurized by the hot pressing mold, the hot pressing material is melted and filled in the molding space. , and at the same time flows to the outside of the shell and the gap between the shell and the cover plate, and then the hot pressing mold is cooled, so that the hot pressing material is gradually cooled and shaped in the forming space, and finally the hot pressing material is coated on the outside of the shell and filled in the gap, and then the shell and the cover plate are combined into one through the hot pressing material. As described in claim 1, a method for integrating a plurality of heterogeneous materials by hot pressing, wherein the shell is made of one of a plastic material or a metal material. As described in claim 1, a method for integrating a plurality of heterogeneous materials by heat pressing, wherein the cover is made of one of glass, acrylic or PC. As described in claim 1, a method for integrating a plurality of heterogeneous materials by hot pressing, wherein the hot pressing material is made of unvulcanized rubber (REBBER). As described in claim 1, a method for integrating a plurality of heterogeneous materials by hot pressing, wherein the melting points of the shell and the cover are higher than the melting points of the hot pressing materials, so as to avoid melting of the shell and the cover when the hot pressing mold is heated, so as to maintain the integrity of the shell and the cover. As described in claim 1, a method for integrating a plurality of heterogeneous materials by hot pressing, wherein the surface of the shell covered by the hot pressing material has been pre-treated to increase the bonding force between the shell and the hot pressing material. A structure that integrates multiple heterogeneous materials by heat pressing, the structure comprising: A shell having an outer surface and a through hole at the center of the shell; A cover plate, covering the through hole of the shell and forming a gap between the cover plate and the shell; A hot-pressed material is coated on the outer surface of the shell after being heated and pressurized, and fills the gap, and the shell and the cover plate are combined into one by the hot-pressed material. As described in claim 7, a plurality of heterogeneous materials are formed into an integrated structure by heat pressing, wherein the shell further has an inner surface, the shell has at least one mounting groove formed on the inner surface, and the bottom of the mounting groove has a through hole penetrating the shell, so that the hot pressed material can pass through the outer surface through the through hole and extend into the mounting groove. As described in claim 8, a plurality of heterogeneous materials are formed into an integrated structure by hot pressing, wherein the shell is further provided with at least one pressing through hole, the pressing through hole also penetrates the shell, and the hot pressed material forms a pressing connecting rod at the center position of the pressing through hole, and the pressing connecting rod extends through the pressing through hole and protrudes on the inner surface. As described in claim 7, a plurality of heterogeneous materials are formed into an integrated structure by heat pressing, wherein a mounting platform is further recessed on the shell, and the through hole is located at the center of the mounting platform, and the mounting platform is used to divide the external surface into a first external surface and a second external surface slightly lower than the first external surface, and the cover plate covers the second external surface, and the gap is formed between the second external surface and the cover plate.

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