CN210617122U - Nano injection molding mold - Google Patents

Abstract

The utility model relates to the technical field of plastic mold design, and discloses a nanometer injection molding mold, which comprises a lower heating plate, wherein the top of the lower heating plate is movably connected with a rear mold, the top of the rear mold is movably connected with a metal body, the metal body and the coating on the surface of the metal body are subjected to nanometer treatment by a nanometer device, then the metal body is placed in a gap between the mold and a mold groove and is fixed, then current is introduced to heat a side heating ring and a transverse heating ring to more than one hundred and fifty ℃ and keep the temperature for two hours, at the moment, a thermoplastic elastomer is placed in an injection hole, the thermoplastic elastomer is melted by heat and flows to the surface of the metal body to be combined with the metal body, the stress is eliminated under the action of high temperature, the deformation is prevented, the crystallinity of the plastic is improved simultaneously, the mechanical property of the plastic is improved, the utility model has simple structure, and the problem that the, has the advantage of high-efficiency injection molding of the middle frame.

Description

Nano injection molding mold

Technical Field

The utility model relates to a plastic mould designs technical field, specifically is nanometer injection moulding mould.

Background

With the development of society and the progress of technology level, the smart phone is widely popularized in a large area, and a common smart phone largely adopts a metal middle frame and a metal rear cover, needs to be integrally formed with a small-area ultrathin plastic material, the difficulty of plastic molding is that the small area and ultra-thinness are the difficulties of plastic molding, which may cause the serious quality problems of degumming, cracking and the like due to insufficient bonding force between plastic and metal, and troubles the manufacturers of mobile phones, in the existing production technology, the transition from plastic to metal and a small amount of plastic is realized, and the combination of metal and plastic has several processes, such as insert injection molding, LDS and other common injection molding and high temperature methods, the bonding force between the plastic and the metal is not enough, cracking is easily caused, the quality of the mobile phone shell is not qualified, therefore, how to efficiently perform injection molding on the mold becomes a technical problem to be solved.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a nanometer injection moulding mould possesses the efficient and makes center injection moulding's advantage, has solved the unqualified problem of center quality of moulding plastics.

(II) technical scheme

For the purpose of realizing above-mentioned efficient messenger center injection moulding, the utility model provides a following technical scheme: a nanometer injection molding mold comprises a lower heating plate, wherein the left side and the right side of the outer wall of the lower heating plate are fixedly connected with first side heating rings, the upper side and the lower side of the outer wall of the lower heating plate are fixedly connected with first transverse heating rings, the edge of the outer wall of the lower heating plate is provided with a screw hole, the inner wall of the screw hole is in threaded connection with a screw, the top of the lower heating plate is movably connected with a rear mold, the top of the rear mold is fixedly connected with a mold, the outer wall of the mold is movably provided with a middle frame, the bottom of the middle frame is fixedly connected with a metal body, the top of the metal body is fixedly connected with a coating, the top of the coating is fixedly connected with a thermoplastic elastomer, the outer wall of the rear mold is movably connected with a front mold, the bottom of the front mold is provided with a mold groove, the top of the, the heating plate is characterized in that a second transverse heating ring is fixedly connected to the bottom of the outer wall of the upper heating plate, a first injection molding hole is formed in the front of the second transverse heating ring, a second injection molding hole is formed in the top of the outer wall of the upper heating plate, a lower heat insulation plate is fixedly connected to the bottom of the lower heating plate, and an upper heat insulation plate is fixedly connected to the top of the upper heating plate.

Preferably, first side heating ring, first violently heating ring, second side heating ring and the horizontal heating ring of second are the ring of rectangular shape, and fixed connection's position is corresponding with the position of center, can carry out stable heating to the center, makes the center be heated more even, and then improves the plastic crystallinity of center, makes its hardness higher, is difficult to take place to warp.

Preferably, the screw holes are formed in the edges of the outer walls of the lower heat insulation plate, the lower heating plate, the rear die, the front die, the upper heating plate and the upper heat insulation plate, the whole injection molding device can be fixed through screws, the injection molding device is connected into a whole, and therefore the middle frame in the injection molding device is conveniently fixed and is subjected to uniform heating forming.

Preferably, the area of the die cavity is larger than that of the die, the shape of a gap between the die cavity and the die is the same as that of the middle frame, and the hot-melt elastomer injected into the gap can accurately and completely form an ideal shape, so that the shape of the middle frame meets the design requirement, the defective rate is smaller, and efficient production work is performed.

Preferably, the first injection molding hole and the second injection molding hole are respectively communicated with two sides of the die cavity, so that the hot-melt elastomer can enter a gap between the die and the die cavity through the first injection molding hole and the second injection molding hole, a complete nanometer middle frame can be formed, and the injection molding work of the middle frame can be completed.

Preferably, the input that the circle was violently heated to first side heating, first violently heating, second side heating and second is enclosed is connected with the output electricity of external group battery, and heating temperature keeps more than one hundred fifty degrees centigrade to need set up the degree at one hundred fifty and keep warm two hours, aim at stress relief, prevent to warp, improve the degree of crystallization of plastic simultaneously, increase its mechanical properties, adopt the electrical heating to heat up faster, the safety and stability that also can add.

Preferably, the metal body and the coating are both subjected to nano treatment, the surface of the metal body is coated with the special coating, the special coating is subjected to nano treatment, the special coating is partially cured and then placed in the gap, and the thermoplastic elastomer is injected to integrate the special coating and the gap.

(III) advantageous effects

Compared with the prior art, the utility model provides a nanometer injection moulding mould possesses following beneficial effect:

1. this nanometer injection moulding mould scribbles special coating through the nanometer device to the metal body and its surface and carries out the nanometer processing, make its partial solidification, put into the metal body in the space between mould and the die cavity after the solidification, it makes the device fixed to screw up the screw, at this moment, let in the electric current, the electric current makes first side heating coil through the electricity connection, first violently heating coil, second side heating coil and the horizontal heating coil of second generate heat, and maintain the temperature above one hundred fifty degrees centigrade, carry out the heat treatment to the metal body, through the metal body, coating, the mould, the die cavity, the screw, first side heating coil, first violently heating coil, the cooperation between second side heating coil and the horizontal heating coil of second is used, thereby reached and can make the effect of center injection moulding high-efficiently.

2. The nanometer injection molding mold enables a metal body to be in a high-temperature state through the heating of the first side heating ring, the first transverse heating ring, the second side heating ring and the second transverse heating ring, at the moment, thermoplastic elastomers are put into the first injection molding hole and the second injection molding hole, the thermoplastic elastomers are melted by heat and flow downwards through the first injection molding hole and the second injection molding hole, and flow to the surface of the metal body and are combined with the metal body, then the metal body is insulated for two hours at a high temperature of one hundred and fifty ℃ so that the hot-melt elastomer and the metal body are fully combined, the stress is eliminated, the deformation is prevented, improve the degree of crystallinity of plastic simultaneously, increase its mechanical properties, through the cooperation use between first side heating collar, first horizontal heating collar, second side heating collar, the horizontal heating collar of second, the metal body, first injection hole, the second injection hole and the hot melt elastomer to reach the fashioned effect of nanocrystallization messenger center high temperature.

Drawings

FIG. 1 is a partial top view of the lower heating plate of the present invention;

FIG. 2 is a top view of a portion of the rear mold of the present application;

FIG. 3 is an enlarged view of a middle frame portion of the present invention;

FIG. 4 is a partial bottom view of the front mold of the present invention;

FIG. 5 is a partial bottom view of the upper heating plate of the present invention;

fig. 6 is a bottom side view of the present invention;

fig. 7 is a partial cross-sectional view of the middle frame of the present invention.

In the figure: 1-lower heating plate, 2-first side heating ring, 3-first transverse heating ring, 4-screw hole, 5-rear mould, 6-mould, 7-middle frame, 8-front mould, 9-mould groove, 10-upper heating plate, 11-second side heating ring, 12-second transverse heating ring, 13-first injection hole, 14-second injection hole, 15-upper heat insulation plate, 16-lower heat insulation plate, 17-screw, 18-metal body, 19-coating and 20-thermoplastic elastomer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, a nano injection molding mold includes a lower heating plate 1, first side heating rings 2 fixedly connected to both left and right sides of an outer wall of the lower heating plate 1, first horizontal heating rings 3 fixedly connected to both upper and lower sides of the outer wall of the lower heating plate 1, screw holes 4 formed in an edge of the outer wall of the lower heating plate 1, screws 17 threadedly connected to inner walls of the screw holes 4, a rear mold 5 movably connected to a top of the lower heating plate 1, a mold 6 fixedly connected to a top of the rear mold 5, a middle frame 7 movably connected to an outer wall of the mold 6, a metal body 18 fixedly connected to a bottom of the middle frame 7, a coating 19 fixedly connected to a top of the metal body 18, the metal body 18 and the coating 19 both subjected to nano-processing, a special coating 19 coated on a surface of the metal body 18, subjected to nano-processing, partially cured and then placed in a gap, and then a thermoplastic elastomer 20 is injected, the metal body 18 has the appearance texture, the structural design of the product is simplified, the product is lighter, thinner, shorter and smaller, and has more cost benefit than the CNC process, the top of the coating 19 is fixedly connected with a thermoplastic elastomer 20, the outer wall of the rear die 5 is movably connected with a front die 8, the bottom of the front die 8 is provided with a die cavity 9, the area of the die cavity 9 is larger than the area of the die 6, the shape of a gap between the die cavity 9 and the die 6 is the same as that of the middle frame 7, the hot-melt elastomer 20 injected into the gap can accurately and completely form an ideal shape, so that the appearance of the middle frame 7 meets the design requirement, the defective rate is smaller, and the efficient production work is carried out, the top of the front die 8 is movably connected with an upper heating plate 10, the two sides of the outer wall of the upper heating plate 10 are fixedly connected with second side heating rings 11, the bottom of the outer wall of the upper heating plate 10, the first side heating ring 2, the first transverse heating ring 3, the second side heating ring 11 and the second transverse heating ring 12 are all long-strip-shaped circular rings, the positions of the fixed connection correspond to the position of the middle frame 7, the middle frame 7 can be stably heated, the middle frame 7 is heated more uniformly, the plastic crystallinity of the middle frame 7 is further improved, the hardness of the plastic is higher, and the plastic is not easy to deform, the input ends of the first side heating ring 2, the first transverse heating ring 3, the second side heating ring 11 and the second transverse heating ring 12 are electrically connected with the output end of an external battery pack, the heating temperature is kept above one hundred and fifty degrees centigrade, and the plastic needs to be kept for two hours at one hundred and fifty degrees centigrade, so that the plastic is free of stress, the deformation is prevented, the crystallinity of the plastic is improved, the mechanical property of the plastic is improved, the electric heating is faster, the safety and stability of the plastic can be improved, a first injection hole 13 is formed in front of the second transverse heating ring 12, the top of the outer wall of the upper heating plate 10 is provided with a second injection hole 14, the first injection hole 13 and the second injection hole 14 are respectively communicated with the two sides of the die cavity 9, so that the hot melt elastomer 20 can enter the gap between the die 6 and the die cavity 9 through the first injection hole 13 and the second injection hole 14, thereby can form complete nanometer center 7, accomplish the work of moulding plastics to center 7, heat insulating board 16 under the bottom fixedly connected with of lower hot plate 1, heat insulating board 15 on the top fixedly connected with of last hot plate 10, heat insulating board 16 down, lower hot plate 1, back mould 5, front mould 8, the outer wall edge of going up hot plate 10 and last heat insulating board 15 has all seted up screw hole 4, can fix whole injection moulding device through screw 17, make the device of moulding plastics fuse, thereby conveniently fix center 7 in the device of moulding plastics and make its even thermoforming.

The working principle is that a nanometer device is used for carrying out nanocrystallization treatment on a metal body 18 and a coating 19 to enable the metal body and the coating to be partially solidified, the metal body 18 is placed in a gap between a mold 6 and a mold groove 9 after solidification, then the device is fixed, current is introduced to heat a first lateral heating ring 2, a first transverse heating ring 3, a second lateral heating ring 11 and a second transverse heating ring 12 to over one hundred and fifty ℃, the metal body 18 is heated, a thermoplastic elastomer 20 is placed in a first injection molding hole 13 and a second injection molding hole 14, the thermoplastic elastomer 20 is melted by heat and flows to the surface of the metal body 18 and is combined with the metal body 18, and therefore stress is eliminated, deformation is prevented, meanwhile, the crystallinity of plastic is improved, the mechanical property of the plastic is improved, and the purpose of efficient nanocrystallization injection molding of the middle frame 7 is achieved.

To sum up, in the nano injection molding mold, a metal body 18 and a special coating 19 coated on the surface of the metal body are subjected to nanocrystallization treatment through a nano device so as to be partially cured, after the metal body is cured, the metal body 18 is placed in a gap between a mold 6 and a mold cavity 9, a screw 17 is screwed so as to fix the nano injection molding mold, current is introduced at this time, the first lateral heating ring 2, the first lateral heating ring 3, the second lateral heating ring 11 and the second lateral heating ring 12 are heated through electric connection by the current, the temperature is maintained above one hundred and fifty ℃, the metal body 18 is subjected to heating treatment, and the metal body 18, the coating 19, the mold 6, the mold cavity 9, the screw 17, the first lateral heating ring 2, the first lateral heating ring 3, the second lateral heating ring 11 and the second lateral heating ring 12 are used in a matched manner, so that the effect of efficiently enabling the middle frame 7 to be subjected to injection molding is achieved; the metal body 18 is in a high-temperature state through the heating of the first side heating ring 2, the first transverse heating ring 3, the second side heating ring 11 and the second transverse heating ring 12, at the moment, the thermoplastic elastomer 20 is placed in the first injection hole 13 and the second injection hole 14, the thermoplastic elastomer 20 is melted by heat and flows downwards through the first injection hole 13 and the second injection hole 14, flows to the surface of the metal body 18 and is combined with the metal body 18, then the metal body 18 is kept warm at the high temperature of one hundred and fifty ℃ for two hours, so that the hot-melt elastomer 20 and the metal body 18 are fully combined, the stress is eliminated, the deformation is prevented, the crystallinity of the plastic is improved, the mechanical property of the plastic is improved, and the first side heating ring 2, the first transverse heating ring 3, the second side heating ring 11, the second transverse heating ring 12, the metal body 18, the first injection hole 13, the second injection hole 14 and the hot-melt elastomer 20 are matched, thereby achieving the effect of forming the middle frame 7 at high temperature by nano-crystallization.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. Nanometer injection moulding mould, including lower hot plate (1), its characterized in that: the heating plate is characterized in that a first side heating ring (2) is fixedly connected to the left side and the right side of the outer wall of the lower heating plate (1), a first transverse heating ring (3) is fixedly connected to the upper side and the lower side of the outer wall of the lower heating plate (1), a screw hole (4) is formed in the edge of the outer wall of the lower heating plate (1), a screw (17) is connected to the inner wall of the screw hole (4) in a threaded manner, the top of the lower heating plate (1) is movably connected with a rear die (5), a die (6) is fixedly connected to the top of the rear die (5), a middle frame (7) is movably connected to the outer wall of the die (6), a metal body (18) is fixedly connected to the bottom of the middle frame (7), a coating (19) is fixedly connected to the top of the metal body (18), a thermoplastic elastomer (20) is fixedly connected to the top of the, die cavity (9) have been seted up to the bottom of front mould (8), hot plate (10) have been gone up to the top swing joint of front mould (8), go up outer wall both sides fixedly connected with second side heating collar (11) of hot plate (10), go up the horizontal heating collar (12) of outer wall bottom fixedly connected with second of hot plate (10), the place ahead that the horizontal heating collar (12) of second was provided with first injection hole (13), second injection hole (14) have been seted up at the outer wall top of going up hot plate (10), heat insulating board (16) under the bottom fixedly connected with of hot plate (1) down, heat insulating board (15) are gone up to the top fixedly connected with of hot plate (10).

2. The nano injection molding mold of claim 1, wherein: the first side heating ring (2), the first transverse heating ring (3), the second side heating ring (11) and the second transverse heating ring (12) are all long-strip-shaped circular rings, and the positions of the fixed connection correspond to the positions of the middle frame (7).

3. The nano injection molding mold of claim 1, wherein: the outer wall edges of the lower heat insulation plate (16), the lower heating plate (1), the rear die (5), the front die (8), the upper heating plate (10) and the upper heat insulation plate (15) are all provided with screw holes (4).

4. The nano injection molding mold of claim 1, wherein: the area of the die cavity (9) is larger than that of the die (6), and the shape of a gap between the die cavity (9) and the die (6) is the same as that of the middle frame (7).

5. The nano injection molding mold of claim 1, wherein: the first injection molding hole (13) and the second injection molding hole (14) are respectively communicated with two sides of the die cavity (9).

6. The nano injection molding mold of claim 1, wherein: the input ends of the first side heating ring (2), the first transverse heating ring (3), the second side heating ring (11) and the second transverse heating ring (12) are electrically connected with the output end of an external battery pack, and the heating temperature is kept above one hundred fifty degrees centigrade.

7. The nano injection molding mold of claim 1, wherein: the metal body (18) and the coating (19) are both subjected to nano-treatment.

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