CN103660127A - Injection molding method of glass-inlaid mold and glass-inlaid mold - Google Patents

Abstract

A method of inserting glass into a mold for injection molding and its products, wherein the method includes the following steps: (1) providing a glass substrate with a black border printed with ink, the glass substrate having a top surface, a bottom surface and a side surface connecting the top surface and the bottom surface ;(2) Dispensing glue within the width of the ink black border of the glass substrate; (3) Put the glass substrate in the injection mold, partially inject thermoplastic material on the bottom surface of the glass substrate, and form a hook or buckle; A thermoplastic elastomer is injected on the bottom and side surfaces of the glass substrate, and the thermoplastic elastomer on the bottom surface is spaced from the above-mentioned thermoplastic material to form a soft and hard plastic frame; (5) Take out the injected glass substrate and assemble it with the lower cover. This product is the product produced after the above-mentioned glass is inserted into the mold injection molding method.

Description

Injection molding method for inserting glass into mold and product thereof

【Technical field】

The invention relates to a method of inserting glass into a mold for injection molding and its products, in particular to a method of inserting glass into a mold for injection molding thermoplastic materials and thermoplastic elastomers and the products obtained therefrom.

【Background technique】

At present, the appearance design of consumer electronic products is constantly being innovated, and glass has gradually become a part of mechanical components. With the rise of touch-control trends in mobile phones, tablet PCs, and notebook computers, glass has become more and more widely used due to its good texture and other advantages, and is deeply loved by consumers.

However, ordinary glass is easy to shatter because it is not easy to bend or because it is impacted when there is a small notch on the side. Usually manufacturers use improved glass to ensure that the glass does not break. Although the impact strength of improved glass is stronger than that of ordinary glass, its price is relatively expensive, which is several times that of ordinary glass, which increases the cost of the product.

At the same time, when injecting thermoplastic materials on thin glass with a thickness of less than 1.0mm, when the size of the glass is larger, the number of glue points is small, and the plastic to be injected is also thin, the injection pressure needs to be increased relatively. In order to make the thermoplastic material fill the entire cavity. However, this increase in injection pressure can lead to breakage of the thin glass.

In view of this, it is necessary to develop an injection molding method for inserting glass into a mold, which can make the glass not easily broken and ensure that there are enough hooks or buckles that can be well combined during assembly.

【Content of invention】

Therefore, the object of the present invention is to provide an injection molding method for inserting glass into a mold, which can make the glass not easily broken, and ensure that there are enough hooks or buckles to ensure a good combination during assembly.

In order to achieve the above object, the injection molding method of inserting glass into a mold of the present invention comprises the following steps:

(1) Provide a glass substrate with a black border printed with ink, the glass substrate has a top surface, a bottom surface and a side surface connecting the top surface and the bottom surface;

(2) Dispensing glue within the width of the ink black frame of the glass substrate;

(3) Put the glass substrate in the injection mold, partially inject thermoplastic material on the bottom surface of the glass substrate, and form a hook or buckle;

(4) Injecting thermoplastic elastomers on the bottom and side surfaces of the glass substrate, the thermoplastic elastomers on the bottom surface and the above-mentioned thermoplastic materials are spaced apart from each other to form a soft and hard plastic frame;

(5) Take out the injected glass substrate and assemble it with the lower cover.

Optionally, the glass substrate is thin glass, and the thickness of the glass substrate is less than 1.0 mm.

Optionally, the glass substrate is placed in an injection mold of a monochrome machine and injected with a thermoplastic material and a thermoplastic elastomer.

Optionally, the glass substrate is placed in a two-component injection mold and injected with thermoplastic materials and thermoplastic elastomers.

Optionally, the thermoplastic elastomer in the step (4) is styrene, olefin, diene, vinyl chloride, urethane, ester, amide, organic fluorine, silicone or Ethylene thermoplastic elastomer.

Optionally, the thickness of the thermoplastic elastomer in the step (4) is 0-0.1 mm larger than the thickness of the thermoplastic material except for the hook or buckle in the step (3).

Optionally, the hardness of the thermoplastic elastomer in the step (4) is Shore 60A-95A.

In addition, the present invention also provides a glass-in-mold injection molding product, which is a product produced by the above-mentioned glass-in-mold injection molding method. This product can be widely used in notebook computers, tablet computers, PDA, MP3, MP4 , mobile phones, cameras or game consoles and other products on the screen.

Compared with the prior art, the injection molding method for inserting glass into the mold of the present invention is to partially inject and mold thermoplastic materials on the bottom surface of the glass substrate, so as to reduce the filling area of thermoplastic materials, reduce injection pressure, and ensure sufficient hooks Or buckle, when assembled with the lower cover, it can be well combined, and then the injection-molded thermoplastic elastomer makes the product both strong and shock-absorbing, and the glass will not be broken due to strong impact.

【Description of drawings】

FIG. 1 is a flow chart showing the steps of an embodiment of the injection molding method of inserting glass into a mold according to the present invention.

FIG. 2 is a schematic structural diagram of a glass substrate.

FIG. 3 is a schematic structural diagram of an embodiment of an injection molded product with glass inserted into a mold according to the present invention.

FIG. 4 is a partially enlarged view of FIG. 3 .

FIG. 5 is a schematic structural view of another embodiment of the injection molded product with glass inserted into the mold of the present invention.

【Detailed ways】

For further understanding to the purpose of the present invention, method step and function, now in conjunction with accompanying drawing, describe in detail as follows:

Example 1

Please refer to Figures 1 to 4, in Embodiment 1, the injection molding method for inserting glass into a mold of the present invention comprises the following steps:

Step s101: Provide a glass substrate 100 with a black border printed with ink. The glass substrate 100 has a top surface 110, a bottom surface 120 and a side surface 130 connecting the top surface 110 and the bottom surface 120. The glass substrate 100 is thin glass, and the thin The thickness of the glass is less than 1.0mm.

Step s102: dispensing glue within the width of the ink black border of the glass substrate 100, and baking after dispensing.

Step s103: Place the glass substrate 100 in an injection mold for a monochrome machine, heat up the injection mold for a monochrome machine, and then partially inject a liquid thermoplastic material (referred to as hard glue) 200 on the bottom surface 120 of the glass substrate 100, the liquid thermoplastic material 200 Part of it is used to form the hook 400 , the temperature of the injection mold of the monochrome machine is lowered, and the injected glass substrate 100 is taken out.

Step s104: Put the above-mentioned glass substrate 100 into another monochrome injection mold, heat up the other monochrome injection mold, and then inject liquid thermoplastic elastomer (soft rubber for short) on the bottom surface 120 and the side surface 130 of the glass substrate 100 ) 300, the thermoplastic elastomer 300 injected on the bottom surface 120 and the above-mentioned thermoplastic material 200 are separated from each other to form a soft and hard plastic frame, the soft and hard plastic frame not only reduces the filling area of the thermoplastic material 200, but also ensures the strength of the product; at the same time The thermoplastic elastomer 300 coated on the bottom surface 120 and the side surface 130 can make the glass substrate 100 have a shock-absorbing effect, so that the glass substrate 100 will not be broken due to a strong impact.

Wherein, the thermoplastic elastomer 300 is styrene, olefin, diene, vinyl chloride, urethane, ester, amide, organic fluorine, silicone or vinyl thermoplastic elastomer, and the The hardness of the thermoplastic elastomer 300 is Shore 60A-95A.

Wherein, the thickness of the injected thermoplastic elastomer 300 is 0-0.1mm larger than the thickness of the thermoplastic material 200 except the hook 400 in step s103, so as to ensure that the thermoplastic elastomer 300 contacts other components first to play a buffering role when impacted.

Step s105 : Take out the injected glass substrate 100 and assemble it with the lower cover through the hook 400 .

Example 2

Please refer to Fig. 2 and Fig. 5, in this embodiment 2, the injection molding method of inserting glass into a mold of the present invention comprises the following steps:

Step s201: Provide a glass substrate 100 with a black border printed with ink. The glass substrate 100 has a top surface 110, a bottom surface 120, and a side surface 130 connecting the top surface 110 and the bottom surface 120. The glass substrate 100 is thin glass, and the thin The thickness of the glass is less than 1.0mm.

Step s202: dispensing glue within the width of the ink black frame of the glass substrate 100, and baking after dispensing.

Step s203 : Place the glass substrate 100 in a two-component injection mold, partially inject liquid thermoplastic material (referred to as hard glue) 200 on the bottom surface 120 of the glass substrate 100 , and part of the liquid thermoplastic material 200 is used to form the buckle 500 .

Step s204: In the two-component injection mold, inject liquid thermoplastic elastomer (referred to as soft glue) 300 on the bottom surface 120 and side surface 130 of the glass substrate 100, and the thermoplastic elastomer 300 injected on the bottom surface 120 is separated from the above-mentioned thermoplastic material 200 Form a soft and hard plastic frame, which not only reduces the filling area of the thermoplastic material 200, but also ensures the strength of the product; at the same time, the thermoplastic elastomer 300 coated on the bottom surface 120 and the side surface 130 can make the glass substrate 100 has a shock-absorbing effect, so that the glass substrate 100 will not be broken due to a strong impact.

Wherein, the thermoplastic elastomer 300 is styrene, olefin, diene, vinyl chloride, urethane, ester, amide, organic fluorine, silicone or vinyl thermoplastic elastomer, and the The hardness of the thermoplastic elastomer 300 is Shore 60A-95A.

Wherein, the thickness of the thermoplastic elastomer 300 is 0-0.1mm larger than the thickness of the thermoplastic material 200 except the buckle 500 in step s203, so as to ensure that the thermoplastic elastomer 300 contacts other components first to play a buffering role when impacted.

Step s205 : Take out the injected glass substrate 100 and assemble it with the lower cover through the buckle 500 .

In addition, please refer to Fig. 3, Fig. 4 and Fig. 5, the present invention also provides a glass-in-mold injection molding product, which is a product produced by the above-mentioned glass-in-mold injection molding method, and the product can be widely used On the screen parts of products such as notebook computers, tablet computers, PDAs, MP3, MP4, mobile phones, cameras or game consoles, but not limited to the above.

Compared with the prior art, the glass-in-mold injection molding method of the present invention is to partially inject and mold the thermoplastic material 200 on the bottom surface 120 of the glass substrate 100, so as to reduce the filling area of the thermoplastic material 200, reduce the injection pressure, and ensure Sufficient hooks 400 or buckles 500 can be well combined with the lower cover, and then the injection-molded thermoplastic elastomer 300 makes the product both strong and shock-absorbing, so that it will not be damaged by strong impact The glass shattered.

It should be pointed out that the present invention is not limited to the above-mentioned embodiments, and any simple modifications, equivalent changes and modifications made to the above-mentioned embodiments by any skilled person based on the technical solution of the present invention fall within the scope of protection of the present invention. .

Claims (8)

1. glass is inserted a mold injection molding method, it is characterized in that, comprises the following steps:

(1) provide the glass substrate of a printing-ink black surround frame, this glass substrate has end face, bottom surface and connects the side of this end face and bottom surface;

(2) in the ink black surround width of frame of this glass substrate, put glue;

(3) glass substrate is placed in to injection mold, the local ejaculation thermoplastic in glass substrate bottom surface, and moulding snap fit or buckle;

(4) on glass substrate bottom surface and side, penetrate thermoplastic elastomer (TPE), the thermoplastic elastomer (TPE) of this bottom surface and above-mentioned thermoplastic space also form soft or hard glue frame;

(5) glass substrate after injection moulding is taken out, and assemble with lower cover.

2. glass as claimed in claim 1 is inserted mold injection molding method, it is characterized in that, described glass substrate is thin type glass, and the thickness of this glass substrate is less than 1.0mm.

3. glass as claimed in claim 1 is inserted mold injection molding method, it is characterized in that, described glass substrate is placed in monochromatic machine injection mold and penetrates thermoplastic and thermoplastic elastomer (TPE).

4. glass as claimed in claim 1 is inserted mold injection molding method, it is characterized in that, described glass substrate is placed in double-colored machine injection mold and penetrates thermoplastic and thermoplastic elastomer (TPE).

5. glass as claimed in claim 1 is inserted mold injection molding method, it is characterized in that, the thermoplastic elastomer (TPE) in described step (4) is phenylethylene, olefines, diene class, polyvinyl chloride-base, ammonia ester class, ester class, amide-type, Organic fluoride class, silicone based or vinyl thermoplastic elastomer (TPE).

6. glass as claimed in claim 1 is inserted mold injection molding method, it is characterized in that, the large 0～0.1mm of thickness of the thermoplastic in the Thickness Ratio step (3) of the thermoplastic elastomer (TPE) in described step (4) except snap fit or buckle.

7. glass as claimed in claim 1 is inserted mold injection molding method, it is characterized in that, the hardness of the thermoplastic elastomer (TPE) in described step (4) is Shore 60A～95A.

8. glass is inserted a mold injection molding product, it is characterized in that, this product is that in claim 1 to 7, the glass described in any one is inserted the product producing after the moulding of mold injection molding method.

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