CN215943507U

CN215943507U - Micro-foaming injection mold for producing automobile engine decorative cover not prone to warping

Info

Publication number: CN215943507U
Application number: CN202122074300.2U
Authority: CN
Inventors: 刘水彦
Original assignee: Guangzhou Highteen Plastics Co ltd
Current assignee: Guangzhou Highteen Plastics Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-03-04
Anticipated expiration: 2031-08-30

Abstract

The utility model relates to the technical field of injection molds, in particular to a micro-foaming injection mold for producing an automobile engine decorative cover which is not easy to warp. This production of difficult warping automobile engine decorates cover is with foaming injection mold a little sets up the heating box through the bottom at the bed die, heats the mould to make the mould keep higher temperature, and then be favorable to the foaming of engine decoration cover to mould plastics a little, improve goods appearance quality, eliminate product injection moulding surface defect, improve product surface finish.

Description

Micro-foaming injection mold for producing automobile engine decorative cover not prone to warping

Technical Field

The utility model relates to the technical field of injection molds, in particular to a micro-foaming injection mold for producing an automobile engine decorative cover which is not easy to warp.

Background

The micro-foaming injection molding process is a novel precise injection molding technology, mainly injects nitrogen or carbon dioxide into rubber material to foam the rubber material, and then injects the foamed rubber material into a mold.

The automobile engine decorative cover is manufactured by adopting a micro-foaming injection molding process, an engine decorative cover mold is required to be used in the production process, when the mold is kept at a higher temperature, the cooling rate of a polymer melt can be effectively slowed down, the melt is kept in a higher temperature range, the fluidity of the polymer melt is improved due to the temperature rise, the adhesive force with the surface of a cavity is small, the action of shearing force between interfaces is effectively reduced, the appearance quality of a product can be improved, and the surface defect of the product in injection molding is eliminated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a micro-foaming injection mold for producing an automobile engine decorative cover, which is not easy to warp, and aims to solve the problems that the cooling rate of a polymer melt can be effectively slowed down when the temperature of the mold is kept higher, the fluidity of the polymer melt is improved, the adhesive force with the surface of a cavity is small, the shearing force between interfaces is effectively reduced, the appearance quality of a product can be improved, but the existing mold does not have a heating function, and the mold is difficult to keep higher temperature.

In order to achieve the purpose, the utility model provides the following technical scheme:

the micro-foaming injection mold for producing the automobile engine decorative cover which is not easy to warp comprises a fixed base, the surface of the fixed base and the positions close to the left side and the right side are provided with supporting vertical plates which are symmetrically distributed, the tops of the two supporting vertical plates jointly support a cooling box, the top of the cooling box is of an open structure, a water return pipe is arranged at the position of the rear side of the cooling box and close to the top of the left side of the cooling box, a cold water input pipe is arranged at the bottom of the cooling box and close to the right end of the front side, a lower die is arranged at the top of the cooling box, the bottom of the lower die is provided with a heating box which is positioned in the cooling box, the top of the lower die and the positions close to the four corners are vertically provided with positioning rods, an upper die is arranged right above the lower die, positioning holes are formed in the top of the upper die and in positions close to the four corners, and injection molding pipes and exhaust pipes are arranged at the top of the upper die and in positions close to the middle of the upper die.

Preferably, the bottom of the fixed base and the positions close to the four corners are provided with supporting columns, and the bottoms of the supporting columns are provided with anti-slip pads.

Preferably, the top of heating box is open structure, be equipped with snakelike electric heating wire in the heating box, waterproof viscose and the bottom sealing bonding of bed die are passed through at the top of heating box.

Preferably, the outer diameter of the positioning rod is matched with the inner diameter of the positioning hole.

Preferably, the surface of the fixed base and the positions close to the middle parts of the edges of the left side and the right side are provided with air cylinders, and the end parts of piston rods of the air cylinders are provided with rectangular push plates.

Preferably, a U-shaped heat insulation plate is vertically arranged on the surface of the fixed base and between the cylinder and the supporting vertical plate.

Preferably, the surface of the upper die and the positions in the middle of the edges of the left side and the right side are provided with Z-shaped connecting plates which are symmetrically distributed, the horizontal plate below the Z-shaped connecting plates is detachably connected with the surface of the upper die through screws, and the horizontal plate above the Z-shaped connecting plates is detachably connected with the surface of the rectangular push plate through screws.

Compared with the prior art, the utility model has the beneficial effects that:

according to the micro-foaming injection mold for producing the automobile engine decorative cover not prone to warping, the heating box is arranged at the bottom of the lower mold, and the mold is heated, so that the mold keeps high temperature, micro-foaming injection molding of the engine decorative cover is facilitated, the appearance quality of a product is improved, the injection molding surface defects of the product are eliminated, and the surface smoothness of the product is improved; the formed product can be cooled through the arranged cooling box, the edge of the product can be prevented from warping due to rapid cooling, and rapid cooling and taking out of the product are facilitated; through the two cylinders, the upper die and the lower die can be closed, and the upper die can also be opened, so that a user can take out a product conveniently.

Drawings

FIG. 1 is a schematic overall first perspective view of the present invention;

FIG. 2 is a schematic view of an overall second perspective structure of the present invention;

FIG. 3 is a schematic view of an assembly structure of an upper mold and a Z-shaped connecting plate according to the present invention;

FIG. 4 is a schematic diagram of a portion of the structure of the present invention;

FIG. 5 is a second partial schematic view of the present invention;

FIG. 6 is a schematic view of the assembled structure of the lower mold, the heating box and the serpentine electric heating wire in the present invention.

In the figure: the device comprises a fixed base 1, a support column 10, an anti-skid pad 100, a support vertical plate 11, a U-shaped heat insulation plate 12, a cooling box 2, a water return pipe 20, a cold water input pipe 21, a lower die 3, a positioning rod 30, an upper die 4, a positioning hole 40, an injection molding pipe 41, an exhaust pipe 42, a cylinder 5, a rectangular push plate 6, a Z-shaped connecting plate 7, a heating box 8 and a snake-shaped electric heating wire 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Referring to fig. 1-6, the present invention provides a technical solution:

a micro-foaming injection mold for producing a decorative cover of an automobile engine which is not easy to warp comprises a fixed base 1, wherein the surface of the fixed base 1 and the positions close to the left side and the right side are provided with supporting vertical plates 11 which are symmetrically distributed and used for supporting a cooling box 2, a space is reserved between the bottom of the cooling box 2 and the fixed base 1 and used for installing a cold water input pipe 21, the tops of the two supporting vertical plates 11 jointly support the cooling box 2 and are used after a product is formed, so that the product can be rapidly cooled, the top of the cooling box 2 is of an open structure, the cooling water in the cooling box 2 takes away the heat on a lower mold 3, the rapid cooling effect is realized, the rapid cooling can also prevent the edge of the product from warping and is favorable for rapidly cooling and taking out the product, a water return pipe 20 is arranged at the position close to the top of the left side on the rear side of the cooling box 2, so that the water with the heat flows back into a refrigerating device, the heat exchanger can be used for refrigerating water again for recycling, the waste of a water source is reduced, and a cold water input pipe 21 is arranged at the bottom of the cooling box 2 and close to the right end of the front side and inputs cold water into the cooling box 2.

The top of cooler bin 2 is equipped with bed die 3, the bottom of bed die 3 is equipped with heating box 8, heating box 8 is located cooler bin 2, heat bed die 3 through heating box 8, thereby make the mould keep higher temperature, and then be favorable to the microfoaming of engine trim cover to mould plastics, improve goods appearance quality, eliminate product injection moulding surface defect, improve product surface finish, the top of bed die 3 and the equal vertical locating lever 30 that is equipped with in position that is close to four corners, be equipped with mould 4 directly over bed die 3, the top of bed die 4 and the position that is close to four corners have all seted up locating hole 40, the top of bed die 4 and the position that is close to the middle part are equipped with injection molding pipe 41 and blast pipe 42, injection molding pipe 41 is used for the injection of raw materials of moulding plastics, blast pipe 42 is connected with air exhaust device, be used for the discharge of gaseous in the mould cavity.

In this embodiment, the bottom of the fixing base 1 and the positions close to the four corners are provided with the supporting columns 10, and the bottom of the supporting columns 10 is provided with the non-slip mat 100, so as to support and prevent slipping of the fixing base 1.

Specifically, the top of heating box 8 is open structure, is equipped with snakelike electric heating wire 9 in the heating box 8, heats bed die 3, makes the mould keep higher temperature, is favorable to moulding plastics, and waterproof viscose and bed die 3's bottom sealing bonding is passed through at the top of heating box 8, avoids the cooling water to enter into in the heating box 8.

Further, the outer diameter of the positioning rod 30 is matched with the inner diameter of the positioning hole 40, so that the upper die 4 can stably move.

Further, the surface of the fixed base 1 and the position close to the middle part of the edges of the left side and the right side are provided with an air cylinder 5, the end part of a piston rod of the air cylinder 5 is provided with a rectangular push plate 6, and the rectangular push plate 6 is driven to move through the air cylinder 5.

Further, the surface of the fixing base 1 and the position between the cylinder 5 and the supporting vertical plate 11 are vertically provided with the U-shaped heat insulation plate 12, so that the influence of the heat of the mold on the cylinder 5 is avoided.

Further, the surface of the upper die 4 and the position in the middle of the edges of the left side and the right side are provided with Z-shaped connecting plates 7 which are symmetrically distributed, a horizontal plate below the Z-shaped connecting plates 7 is detachably connected with the surface of the upper die 4 through screws, the horizontal plate above the Z-shaped connecting plates 7 is detachably connected with the surface of the rectangular push plate 6 through screws, and the air cylinder 5 drives the upper die 4 to move through the Z-shaped connecting plates 7, so that the die is convenient to disassemble, and a user can take out a product.

When the micro-foaming injection mold for producing the automobile engine decorative cover which is not easy to warp is used, a user firstly heats the lower mold 3 through the snake-shaped electric heating wire 9, then injects injection molding raw materials into the upper mold 4 through the injection molding pipe 41, and the injection molding process is in a high-temperature environment because the mold keeps high temperature, so that the micro-foaming injection molding of the engine decorative cover is facilitated, the appearance quality of a product is improved, the injection molding surface defects of the product are eliminated, the surface smoothness of the product is improved, and the probability of warping of the product can be effectively reduced by adopting a micro-foaming injection molding process; after the product is molded, stopping the operation of the snake-shaped electric heating wire 9, and inputting cold water into the cold water input pipe 21 to enable the cooling tank 2 to carry out rapid cooling treatment on the mold, so that the product is rapidly cooled, and the condition that the product is warped is further prevented; after the product is cooled and formed, a user pushes the two Z-shaped connecting plates 7 to move upwards through the two cylinders 5 respectively, so that the upper die 4 is driven to move upwards to be separated from the lower die 3, and the product can be taken out conveniently by the user.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Production of difficult warping automobile engine decorates cover is with foaming injection mold a little, its characterized in that: comprises a fixed base (1), wherein symmetrically distributed supporting vertical plates (11) are arranged on the surface of the fixed base (1) and at positions close to the left side and the right side, two cooling boxes (2) are jointly supported at the tops of the supporting vertical plates (11), the top of each cooling box (2) is of an open structure, a water return pipe (20) is arranged at the rear side of each cooling box (2) and at a position close to the top of the left side, a cold water input pipe (21) is arranged at the bottom of each cooling box (2) and at a position close to the right end of the front side, a lower die (3) is arranged at the top of each cooling box (2), a heating box (8) is arranged at the bottom of each lower die (3), positioning rods (30) are vertically arranged at the top of each lower die (3) and at positions close to four corners, and an upper die (4) is arranged right above each lower die (3), the top of going up mould (4) and being close to the position of four corners and all having seted up locating hole (40), the top of going up mould (4) and the position that is close to the middle part are equipped with injection molding pipe (41) and blast pipe (42).

2. The micro-foaming injection mold for producing the automotive engine decorative cover not prone to warping according to claim 1, characterized in that: the bottom of unable adjustment base (1) just is close to the position of four corners and all is equipped with support column (10), the bottom of support column (10) is equipped with slipmat (100).

3. The micro-foaming injection mold for producing the automotive engine decorative cover not prone to warping according to claim 1, characterized in that: the top of heating box (8) is open structure, be equipped with snakelike electric heating wire (9) in heating box (8), the bottom sealing bonding of waterproof viscose and bed die (3) is passed through at the top of heating box (8).

4. The micro-foaming injection mold for producing the automotive engine decorative cover not prone to warping according to claim 1, characterized in that: the outer diameter of the positioning rod (30) is matched with the inner diameter of the positioning hole (40).

5. The micro-foaming injection mold for producing the automotive engine decorative cover not prone to warping according to claim 1, characterized in that: the surface of the fixed base (1) and the positions close to the middle parts of the edges of the left side and the right side are provided with air cylinders (5), and the end parts of piston rods of the air cylinders (5) are provided with rectangular push plates (6).

6. The micro-foaming injection mold for producing the automotive engine decorative cover not prone to warping according to claim 5, characterized in that: and a U-shaped heat insulation plate (12) is vertically arranged on the surface of the fixed base (1) and at a position between the cylinder (5) and the supporting vertical plate (11).

7. The micro-foaming injection mold for producing the automotive engine decorative cover not prone to warping according to claim 5, characterized in that: the surface of the upper die (4) and the positions, located at the middle parts of the edges of the left side and the right side, of the upper die are provided with Z-shaped connecting plates (7) which are symmetrically distributed, the horizontal plate below the Z-shaped connecting plates (7) is detachably connected with the surface of the upper die (4) through screws, and the horizontal plate above the Z-shaped connecting plates (7) is detachably connected with the surface of the rectangular push plate (6) through screws.