CN217144719U

CN217144719U - Automobile lamp shell injection mold backflow prevention mechanism

Info

Publication number: CN217144719U
Application number: CN202220618255.4U
Authority: CN
Inventors: 赵艳; 朱春明
Original assignee: Jiangsu Fushun Tianzhizao Technology Co ltd
Current assignee: Jiangsu Fushun Tianzhizao Technology Co ltd
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-08-09
Anticipated expiration: 2032-03-22

Abstract

The utility model discloses a car light shell injection mold prevents flow reversal mechanism, the on-line screen storage device comprises a base, base top fixedly connected with lower mould, the lower mould top is connected with the mould, has seted up the die cavity in the lower mould top, and top-down link up in proper order in last mould has seted up first runner, second runner and third runner, and goes up mould top internal fixation and opposite wears to be equipped with two sets of pipes of moulding plastics, and the top surface is equipped with electric putter through the bolt fastening in the mounting bracket. This car light shell injection mold prevents flowing back mechanism pours into the material into in the first runner through setting up the pipe of moulding plastics, thereby through the first runner that has the guide effect, the shaping of mould intracavity is carried the material to the second runner and third runner, can drive sealed piece through electric putter and seal to the second runner, effectively avoid the problem of material refluence in the mould cavity, this car light shell injection mold prevents flowing back mechanism degree of automation height, mobility is strong, the shaping quality of material in the mould cavity has been guaranteed, high practicability, and convenient to use.

Description

Automobile lamp shell injection mold backflow prevention mechanism

Technical Field

The utility model relates to a car light shell processing technology field specifically is a car light shell injection mold prevents mechanism that flows backwards.

Background

The automobile lamps are used for illuminating the road at night and giving out various driving signals, and are generally classified into headlamps, tail lamps, steering lamps and the like.

The injection mold can be used during production of the automobile lamp shell, the in-process of pouring a plastic melt through the pouring gate is utilized, the diameter of a discharge hole of the pouring gate is large, the pouring gate is frozen slowly, the melt entering the inside of the forming cavity easily generates backflow, the efficiency is reduced when the melt is poured, the flowability is poor, the problems of uneven shrinkage and the like of bubbles of a product are solved, and accordingly the anti-backflow mechanism of the automobile lamp shell injection mold is designed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a car light shell injection mold prevents mechanism of refluencing to the problem of easily flowing backwards when solving the current car light shell injection mold who proposes in the above-mentioned background art and using.

In order to realize the purpose, the utility model provides the following technical scheme, a backflow preventing mechanism of an injection mold of an automobile lamp shell, which comprises a base, wherein the top of the base is fixedly connected with a lower mold, the top of the lower mold is connected with an upper mold, a mold cavity is arranged in the top of the lower mold, a first sprue, a second sprue and a third sprue are sequentially communicated from top to bottom in the upper mold, two groups of injection molding pipes are fixedly and oppositely penetrated in the top of the upper mold, a mounting frame is fixedly arranged on the top of the upper mold, an electric push rod is fixedly arranged on the top surface in the mounting frame through bolts, a protective cylinder is fixedly sleeved outside the output end of the electric push rod, a guide platform is fixedly connected with the bottom of the protective cylinder, a sealing block is fixedly connected with the bottom of the guide platform, a sealing groove is arranged in the top of the upper mold, a mounting block is connected in the sealing groove, a protective ring is fixedly connected with the top of the mounting block, and a sealing rubber ring is fixedly arranged on the top of the protective ring, the fixed frame that is equipped with in base top, the fixed two sets of cylinders that are equipped with of top surface in the frame, cylinder bottom and last mould top fixed connection, two sets of locating levers of lower mould top fixedly connected with go up the equal fixedly connected with position sleeve in mould both sides, and the locating lever is connected in the position sleeve inboard.

Preferably, the first gate and the third gate are both cylindrical structures, and the second gate is a truncated cone structure.

Preferably, the injection molding pipe is arranged in a bent mode, and the lower end of the injection molding pipe is communicated with the first pouring gate.

Preferably, the guide table and the sealing block are both of a circular truncated cone structure, and the shape of the sealing block is matched with that of the lower end of the second pouring gate.

Preferably, the mounting block and the sealing groove are both of an annular structure, and the surface of the sealing block is connected with the inner wall surface of the sealing groove through a threaded structure.

Compared with the prior art, the beneficial effects of the utility model are that: this car light shell injection mold prevents flowing back mechanism pours into the material into in the first runner through setting up the pipe of moulding plastics, thereby through the first runner that has the guide effect, the shaping of mould intracavity is carried the material to the second runner and third runner, can drive sealed piece through electric putter and seal to the second runner, effectively avoid the problem of material refluence in the mould cavity, this car light shell injection mold prevents flowing back mechanism degree of automation height, mobility is strong, the shaping quality of material in the mould cavity has been guaranteed, high practicability, and convenient to use.

Drawings

FIG. 1 is a front sectional view of a backflow prevention mechanism of an injection mold for an automobile lamp housing of the present invention;

FIG. 2 is a schematic view of a front structure of a backflow prevention mechanism of an injection mold for an automobile lamp housing of the present invention;

FIG. 3 is a partial front sectional view of the anti-backflow mechanism of the injection mold for the vehicle lamp housing of the present invention;

fig. 4 is the utility model relates to a local front structure cross-sectional view when anti-backflow mechanism of car light shell injection mold moulds plastics.

In the figure: 1. the device comprises a base, 2, a lower die, 3, an upper die, 4, a die cavity, 5, a first pouring gate, 6, a second pouring gate, 7, a third pouring gate, 8, an injection molding pipe, 9, a mounting frame, 10, an electric push rod, 11, a protective cylinder, 12, a material guide table, 13, a sealing block, 14, a sealing groove, 15, a mounting block, 16, a protective ring, 17, a sealing rubber ring, 18, a rack, 19, an air cylinder, 20, a positioning rod, 21 and a positioning sleeve.

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. 1-4, the present invention provides a technical solution: an automobile lamp shell injection mold backflow prevention mechanism comprises a base 1, wherein the top of the base 1 is fixedly connected with a lower die 2, the top of the lower die 2 is connected with an upper die 3, the top of the lower die 2 is internally provided with a die cavity 4, the upper die 3 is internally provided with a first sprue 5, a second sprue 6 and a third sprue 7 which are sequentially communicated from top to bottom, the first sprue 5 and the third sprue 7 are both of cylindrical structures, the second sprue 6 is of a circular truncated cone structure, the second sprue 6 has a material guiding function, the inner diameter length of the first sprue 5 is larger than that of the third sprue 7, two groups of injection molding pipes 8 are fixedly and oppositely arranged in the top of the upper die 3, the injection molding pipes 8 are arranged in a bent mode, the lower ends of the injection molding pipes 8 are communicated with the first sprue 5, materials can be conveyed into the first sprue 5 through the injection pipes 8, the top of the upper die 3 is fixedly provided with a mounting frame 9, the inner top surface of the mounting frame 9 is fixedly provided with an electric push rod 10 through bolts, the outer side of the output end of the electric push rod 10 is fixedly sleeved with a protection cylinder 11, the protection cylinder 11 has a protection effect on the electric push rod 10, the bottom of the protection cylinder 11 is fixedly connected with a material guide table 12, the bottom of the material guide table 12 is fixedly connected with a sealing block 13, the material guide table 12 and the sealing block 13 are both in a circular table type structure, the sealing block 13 is matched with the shape of the lower end of the second sprue 6, the surface of the material guide table 12 is not easy to accumulate materials, when the sealing block 13 is matched and connected in the lower end of the second sprue 6, the sealing block 13 has a sealing effect on the second sprue 6, so that the backflow of the materials is effectively avoided, a sealing groove 14 is formed in the top of the upper die 3, an installation block 15 is connected in the sealing groove 14, the top of the installation block 15 is fixedly connected with a protection ring 16, the top of the protection ring 16 is fixedly provided with a sealing rubber ring 17, wherein the protection cylinder 11 is movably arranged on the inner side of the sealing rubber ring 17 and the inner side of the protection ring 16, and the installation block 15 and the sealing groove 14 are both in an annular structure, 15 surfaces of installation piece are connected with 14 internal face of seal groove through helicitic texture, can be with its fixed connection in seal groove 14 through rotating installation piece 15, and seal groove 14 sets up in the outside of 5 openings of first runner, the guard ring 16 has protection and sealed effect to 5 tops of first runner, the fixed frame 18 that is equipped with in 1 top of base, the fixed two sets of cylinders 19 that are equipped with of top surface in the

frame

18, 19 bottoms of cylinders and the 3 top fixed connection of last mould, 2 two sets of locating levers 20 of top fixed connection of lower mould, go up the equal fixedly connected with position sleeve 21 in 3 both sides of mould, locating lever 20 is connected in position sleeve 21 inboardly, locating lever 20 diameter length and the 21 internal diameter length phase-matches of position sleeve.

The working principle is as follows: when using this car light shell injection mold anti-backflow mechanism, earlier in installation piece 15 screw in to seal groove 14, rise through electric putter 10 drive seal piece 13, make seal piece 13 and the 6 internal face phase separations of second runner, go up mould 3 and the compound die of 2 lower moulds through cylinder 19 drive after that, be connected injection moulding equipment with injection molding pipe 8, thereby the material pours into first runner 5 into through injection molding pipe 8, the material enters into die cavity 4 through second runner 6 and third runner 7 in, rethread electric putter 10 drive seal piece 13 descends, make seal piece 13 accordant connection in the 6 lower extremes of second runner, thereby it is sealed to second runner 6, avoid the material refluence, above be this car light shell injection mold anti-backflow mechanism working process.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a mechanism that flows backwards is prevented to car light shell injection mold, includes base (1), base (1) top fixedly connected with lower mould (2), its characterized in that: the top of the lower die (2) is connected with an upper die (3), the top of the lower die (2) is internally provided with a die cavity (4), the upper die (3) is internally provided with a first sprue (5), a second sprue (6) and a third sprue (7) in a penetrating manner from top to bottom in sequence, the top of the upper die (3) is internally fixedly and oppositely provided with two groups of injection molding pipes (8), the top of the upper die (3) is fixedly provided with a mounting frame (9), the inner top surface of the mounting frame (9) is fixedly provided with an electric push rod (10) through bolts, the outer side of the output end of the electric push rod (10) is fixedly provided with a protective cylinder (11), the bottom of the protective cylinder (11) is fixedly connected with a material guide table (12), the bottom of the material guide table (12) is fixedly connected with a sealing block (13), the top of the upper die (3) is internally provided with a sealing groove (14), the mounting block (15) is internally connected with a mounting block (15), the top of the mounting block (15) is fixedly connected with a protective ring (16), the top of the protective ring (16) is fixedly provided with a sealing rubber ring (17), the top of the base (1) is fixedly provided with a rack (18), the inner top surface of the rack (18) is fixedly provided with two groups of cylinders (19), the bottoms of the cylinders (19) are fixedly connected with the top of the upper die (3), the top of the lower die (2) is fixedly connected with two groups of positioning rods (20), the two sides of the upper die (3) are fixedly connected with positioning sleeves (21), and the positioning rods (20) are connected to the inner sides of the positioning sleeves (21).

2. The automobile lamp shell injection mold backflow prevention mechanism according to claim 1, characterized in that: the first pouring gate (5) and the third pouring gate (7) are both cylindrical structures, and the second pouring gate (6) is of a circular truncated cone structure.

3. The automobile lamp shell injection mold backflow prevention mechanism according to claim 1, characterized in that: the injection molding pipe (8) is arranged in a bent mode, and the lower end of the injection molding pipe (8) is communicated with the first pouring gate (5).

4. The automobile lamp shell injection mold backflow prevention mechanism according to claim 1, characterized in that: the guide table (12) and the sealing block (13) are both of a circular truncated cone structure, and the sealing block (13) is matched with the lower end of the second pouring gate (6) in shape.

5. The automobile lamp shell injection mold backflow prevention mechanism according to claim 1, characterized in that: the mounting block (15) and the sealing groove (14) are both of an annular structure, and the surface of the mounting block (15) is connected with the inner wall surface of the sealing groove (14) through a threaded structure.