CN224060335U - Injection molding die for automobile rearview mirror - Google Patents

Abstract

The utility model discloses an injection molding die for an automobile rearview mirror, which comprises a lower die, an upper die arranged above the lower die, a molding cavity arranged at the top of the lower die, a molding block arranged at the bottom of the upper die and an injection molding port arranged at the upper end of the upper die, wherein the lower die and the upper die are provided with automatic demolding assemblies, each automatic demolding assembly comprises a floating frame arranged at the bottom of the lower die and the top of the upper die, two floating frames are symmetrically provided with abutting columns at four corners of one side, which is close to each other, of each floating frame, and the lower ends of the abutting columns on the upper die can extend to the bottom of the upper die. This automobile rearview mirror injection molding mould can utilize the elasticity of elastic component to realize the automatic drawing of patterns of shaping spare after bed die and last mould separation through the automatic drawing of patterns subassembly that sets up, and the elastic component shrink holds the power when merging, and the elastic component resets after the separation, need not to set up the drive source and can realize automatic drawing of patterns, simple structure, convenient to use has improved efficiency.

Description

Injection molding die for automobile rearview mirror

Technical Field

The utility model relates to the field of molds, in particular to an injection molding mold for an automobile rearview mirror.

Background

The injection molding die is key tooling equipment for processing molten plastics into parts with specific shapes, and the core of the injection molding die consists of an upper die, a lower die, a molding cavity matched with the shape of a workpiece, a molding block and the like. In the molding process, the upper die and the lower die are closed under high pressure to form a closed cavity, molten plastic is injected into the cavity through a pouring system, complex structural components such as an automobile rearview mirror and the like are formed after cooling and solidification, and then the dies are separated through a demoulding mechanism, and finished products are ejected out, so that injection molding circulation is completed.

Currently, automobile rearview mirror injection molds generally rely on manual intervention or high-cost automation schemes in the demolding stage. The traditional mould needs to manually pry the ejector pin or disassemble the insert to take out the workpiece, has low efficiency and is easy to damage the surface of a product due to uneven stress, and the partial automatic mould can realize mechanical demoulding, but needs to be additionally provided with independent driving sources such as a hydraulic cylinder, a pneumatic device or a servo motor, and the like, so that the mould has a complex structure, the manufacturing cost is increased, the maintenance difficulty is increased, and the severe requirements of high efficiency, low cost and stability on the mass production of automobile parts are difficult to meet.

Therefore, it is necessary to provide an injection molding mold for an automobile rearview mirror to solve the above problems.

Disclosure of utility model

The utility model mainly aims to provide an injection molding die for an automobile rearview mirror, which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

An injection molding die for an automobile rearview mirror comprises a lower die, an upper die arranged above the lower die, a molding cavity arranged at the top of the lower die, a molding block arranged at the bottom of the upper die and an injection molding port arranged at the upper end of the upper die;

The automatic demolding assembly comprises floating frames arranged at the bottom of the lower mold and the top of the upper mold, two abutting columns are symmetrically arranged at four corners of one side, close to each other, of the floating frames, the lower ends of the abutting columns on the upper mold can extend to the bottom of the upper mold, the upper ends of the abutting columns on the lower mold can extend to the top of the lower mold, an upper demolding block is movably arranged in the forming block, the upper end of the upper demolding block extends to the top of the upper mold and is fixed to the bottom of the floating frame above, a lower demolding module corresponding to the forming cavity is movably arranged in the lower mold, the bottom of the lower demolding module extends to the bottom of the lower mold and is fixed to the top of the floating frame below, and limiting frames in L shape are arranged on opposite sides of the upper mold and the lower mold, and elastic pieces are arranged between one ends of the limiting frames and the floating frames.

Preferably, when the elastic piece is in a reset state, the upper end of the lower demolding module protrudes out of the inner wall of the molding cavity, and the lower end of the upper demolding block protrudes out of the bottom wall of the molding block;

when the lower die and the upper die are combined, the upper end of the lower stripping module is in smooth transition with the inner wall of the forming cavity, and the bottom of the upper stripping module is in smooth transition with the bottom wall of the forming block.

Preferably, a through groove corresponding to the injection molding opening is formed in the floating frame positioned at the top of the upper die.

Preferably, the floating frame is provided with a guide post corresponding to the limit frame, the limit frame is provided with a guide hole matched with the guide post, and the guide post is movably guided and matched with the guide hole;

the elastic piece is a spring and is sleeved outside the guide post.

Preferably, the four corners of the lower die and the upper die are respectively provided with a first through hole matched with the abutting column, and the abutting column is movably guided and matched with the first through hole.

Preferably, the forming block and the upper die are provided with second through holes which correspond to and are matched with the upper demolding block, and the upper demolding module is movably connected with the second through holes;

the lower die is provided with a third through hole which corresponds to and is matched with the lower demoulding block, and the lower demoulding block is movably connected with the third through hole.

Compared with the prior art, the utility model provides the injection molding die for the automobile rearview mirror, which has the following beneficial effects:

this automobile rearview mirror injection molding mould can utilize the elasticity of elastic component to realize the automatic drawing of patterns of shaping spare after bed die and last mould separation through the automatic drawing of patterns subassembly that sets up, and the elastic component shrink holds the power when merging, and the elastic component resets after the separation, need not to set up the drive source and can realize automatic drawing of patterns, simple structure, convenient to use has improved efficiency.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of the lower mold and the upper mold in the separated state according to the present utility model;

FIG. 3 is a schematic view of the structure of the present utility model from another perspective based on FIG. 2;

FIG. 4 is a schematic view of the structure of the upper mold in the disassembled state of the present utility model;

fig. 5 is a schematic view of the structure of the lower die of the utility model in a disassembled state.

In the drawing, 1, a lower die, 2, an upper die, 3, a support, 4, a floating frame, 5, an injection molding port, 6, a limiting frame, 7, a guide pillar, 8, a molding cavity, 9, an abutting column, 10, a lower demolding block, 11, a molding block, 12, an upper demolding block, 13, a guide hole, 14, an elastic piece, 15, a through groove, 16, a first through hole, 17, a second through hole, 18 and a third through hole.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-5, an injection molding mold for an automobile rearview mirror comprises a lower mold 1, an upper mold 2 arranged above the lower mold 1, a molding cavity 8 arranged at the top of the lower mold 1, a molding block 11 arranged at the bottom of the upper mold 2 and an injection port 5 arranged at the upper end of the upper mold 2, wherein the lower mold 1 and the upper mold 2 are provided with an automatic demolding assembly, the automatic demolding assembly comprises a floating frame 4 arranged at the bottom of the lower mold 1 and the top of the upper mold 2, the floating frame 4 arranged at the top of the upper mold 2 is provided with a through groove 15 corresponding to the injection port 5, four corners of two floating frames 4 which are close to one side are symmetrically provided with abutting columns 9, the lower end of the abutting columns 9 on the upper mold 2 can extend to the bottom of the upper mold 2, the upper end of the abutting columns 9 on the lower mold 1 can extend to the top of the lower mold 1, the four corners of the lower die 1 and the upper die 2 are respectively provided with a first through hole 16 matched with the abutting column 9, the abutting column 9 is movably matched with the first through hole 16 in a guiding way, the abutting column 9 extends through the first through hole 16, the inside of the forming block 11 is movably provided with an upper demoulding block 12, the upper end of the upper demoulding block 12 extends to the top of the upper die 2 and is fixed at the bottom of the upper floating frame 4, the lower end of the upper demoulding block 12 can extend to the bottom of the forming block 11, in particular, the forming block 11 and the upper die 2 are respectively provided with a second through hole 17 corresponding to and matched with the upper demoulding block 12, the upper demoulding block 12 is movably connected with the second through hole 17, the upper demoulding block 12 extends through the second through hole 17, the inside of the lower die 1 is movably provided with a lower demoulding block 10 corresponding to the forming cavity 8, the bottom of the lower demoulding block 10 extends to the bottom of the lower die 1 and is fixed at the top of the lower floating frame 4, the upper end of the lower stripping module 10 can extend to the inner cavity of the forming cavity 8, specifically, the lower die 1 is provided with a third through hole 18 corresponding to and matched with the lower stripping module 10, the lower stripping block 10 is movably connected with the third through hole 18, the lower stripping block 10 extends through the third through hole 18, the opposite sides of the upper die 2 and the lower die 1 are respectively provided with a limiting frame 6 in an L shape, an elastic piece 14 is arranged between one end of the limiting frame 6 and the floating frame 4, the floating frame 4 is provided with a guide post 7 corresponding to the limiting frame 6, the limiting frame 6 is provided with a guide hole 13 matched with the guide post 7, the guide post 7 is movably guided and matched with the guide hole 13, the elastic piece 14 is a spring, the elastic piece 14 is sleeved outside the guide post 7, when the elastic piece 14 is in a reset state, the upper end of the lower stripping block 10 protrudes out of the inner wall of the forming cavity 8, the lower end of the upper stripping block 12 protrudes out of the bottom wall 11 of the forming block, when the lower die 1 and the upper die 2 are in a combined state, the upper end of the lower stripping block 10 and the inner wall of the forming cavity 8 are in smooth transition, and the bottom of the upper stripping block 12 and the bottom wall 11 of the forming cavity are in smooth transition.

When the mold is used, the lower mold 1 and the upper mold 2 are combined, one ends, close to each other, of the two groups of abutting columns 9 are abutted, the abutting columns 9 drive the floating frame 4 to move, the elastic piece 14 is contracted, the bottom of the upper demolding block 12 is in smooth transition with the bottom wall of the molding block 11, the top of the lower demolding block 10 is in smooth transition with the inner wall of the molding cavity 8, then injection molding is carried out through the injection molding opening 5, then cooling and cooling are carried out, the lower mold 1 and the upper mold 2 are separated after molding, the elastic piece 14 is reset gradually, the upper demolding block 12 protrudes gradually from the bottom wall of the molding block 11, the molding piece is fixed, the upper end of the lower demolding block 10 protrudes gradually from the inner wall of the molding cavity 8, and the molding piece is jacked, so that detachment can be realized no matter whether the molding piece is attached to the inner wall of the molding cavity 8 or the outer wall of the molding block 11.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. An injection molding die for an automobile rearview mirror comprises a lower die (1), an upper die (2) arranged above the lower die (1), a molding cavity (8) arranged at the top of the lower die (1), a molding block (11) arranged at the bottom of the upper die (2) and an injection molding port (5) arranged at the upper end of the upper die (2);

The automatic demolding device is characterized in that automatic demolding components are arranged on the lower mold (1) and the upper mold (2), each automatic demolding component comprises a floating frame (4) arranged at the bottom of the lower mold (1) and the top of the upper mold (2), abutting columns (9) are symmetrically arranged on four corners of one side, which is close to the upper mold (2), of each floating frame (4), the lower ends of the abutting columns (9) on the upper mold (2) can extend to the bottom of the upper mold (2), the upper ends of the abutting columns (9) on the lower mold (1) can extend to the top of the lower mold (1), an upper demolding block (12) is movably arranged in the forming block (11), the upper ends of the upper demolding blocks (12) extend to the top of the upper mold (2) and are fixed at the bottom of the upper floating frame (4), a lower demolding module (10) corresponding to the forming cavity (8) is movably arranged in the lower mold (1), the bottom of each lower demolding module (9) extends to the bottom of the lower mold (1) and is fixed at the bottom of the floating frame (4) below, and an elastic limiting piece (6) is arranged between the upper mold (2) and one side (6) of the upper mold (4).

2. The injection molding die for the automobile rearview mirror according to claim 1, wherein when the elastic piece (14) is in a reset state, the upper end of the lower demolding module (10) protrudes out of the inner wall of the molding cavity (8), and the lower end of the upper demolding block (12) protrudes out of the bottom wall of the molding block (11);

When the lower die (1) and the upper die (2) are combined, the upper end of the lower stripping module (10) is in smooth transition with the inner wall of the forming cavity (8), and the bottom of the upper stripping block (12) is in smooth transition with the bottom wall of the forming block (11).

3. The injection molding die for the automobile rearview mirror is characterized in that a through groove (15) corresponding to an injection molding opening (5) is formed in a floating frame (4) positioned at the top of the upper die (2).

4. The injection molding die for the automobile rearview mirror is characterized in that a guide pillar (7) corresponding to a limiting frame (6) is arranged on the floating frame (4), a guide hole (13) matched with the guide pillar (7) is formed in the limiting frame (6), and the guide pillar (7) is in movable guide fit with the guide hole (13);

The elastic piece (14) is a spring, and the elastic piece (14) is sleeved outside the guide post (7).

5. The injection molding die for the automobile rearview mirror is characterized in that first through holes (16) matched with the abutting columns (9) are formed in four corners of the lower die (1) and the upper die (2), and the abutting columns (9) are in movable guiding fit with the first through holes (16).

6. The injection molding die for the automobile rearview mirror is characterized in that the molding block (11) and the upper die (2) are respectively provided with a second through hole (17) which corresponds to and is matched with the upper demolding block (12), and the upper demolding block (12) is movably connected with the second through hole (17);

The lower die (1) is provided with a third through hole (18) which corresponds to and is matched with the lower stripping module (10), and the lower stripping module (10) is movably connected with the third through hole (18).