Injection molding mold for automobile rearview mirror

Abstract

The utility model discloses an injection molding mold for an automobile rearview mirror. The injection molding mold comprises a lower mold, an upper mold arranged above the lower mold, a molding cavity formed in the top of the lower mold, a molding block arranged at the bottom of the upper mold and an injection molding opening formed in the upper end of the upper mold, an automatic demolding assembly is arranged on the lower mold and the upper mold and comprises floating frames arranged at the bottom of the lower mold and the top of the upper mold, abutting columns are symmetrically arranged at the four corners of the sides, close to each other, of the two floating frames, and the lower ends of the abutting columns on the upper mold can extend to the bottom of the upper mold. According to the injection molding mold for the automobile rearview mirror, automatic demolding of a molded part can be achieved through the elastic force of the elastic part after the lower mold and the upper mold are separated through the arranged automatic demolding assembly, the elastic part shrinks and accumulates force during combination and resets after separation, automatic demolding can be achieved without a driving source, and the injection molding mold is simple in structure and convenient to use; and the efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of mould, especially a kind of automobile rearview mirror injection molding mould. BACKGROUND

[0002] Injection molding mould is the key tooling equipment for processing molten plastic into specific shape parts, and its core is composed of upper mould, lower mould, forming cavity and forming block adapted to the shape of workpiece. In the forming process, the upper and lower moulds are closed to form a sealed cavity under high pressure, the molten plastic is injected into the cavity through the gating system, and the automobile rearview mirror and other complex structural parts are formed after cooling and solidification. Then, the mould is separated by demolding mechanism and the finished product is ejected, completing the injection molding cycle.

[0003] Current automobile rearview mirror injection mould generally relies on manual intervention or high-cost automation scheme in demolding stage. The traditional mould needs to be manually pried by operating personnel or disassembled to take out the workpiece, which is low in efficiency and easy to damage the product surface due to uneven force; although some automated moulds can realize mechanical demolding, they need to be additionally configured with independent driving sources such as hydraulic cylinders, pneumatic devices or servo motors, which leads to complex mould structure, rising manufacturing cost and increased maintenance difficulty, and it is difficult to meet the strict requirements of high efficiency, low cost and stability for large-scale production of automobile parts.

[0004] Therefore, it is necessary to provide an automobile rearview mirror injection molding mould to solve the above problems. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide an automobile rearview mirror injection molding mould, which can effectively solve the problems in the background art.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0007] An automobile rearview mirror injection molding mould, comprising a lower mould, an upper mould arranged above the lower mould, a forming cavity arranged at the top of the lower mould, a forming block arranged at the bottom of the upper mould, and an injection port arranged at the upper end of the upper mould.

[0008] The lower mold and the upper mold are provided with automatic demolding assemblies, the automatic demolding assemblies comprise floating frames arranged at the bottom of the lower mold and the top of the upper mold, four corners of the side close to each other of the two floating frames are symmetrically provided with abutting columns, the lower end of the abutting column on the upper mold can extend to the bottom of the upper mold, the upper end of the abutting column on the lower mold can extend to the top of the lower mold, the inside of the forming block is movably provided with an upper demolding block, and the upper end of the upper demolding block extends to the top of the upper mold and is fixed to the bottom of the upper floating frame, the inside of the lower mold is movably provided with a lower demolding block corresponding to the forming cavity, and the bottom of the lower demolding block extends to the bottom of the lower mold and is fixed to the top of the lower floating frame, and the side away from each other of the upper mold and the lower mold is provided with a limiting frame in an "L" shape, and an elastic piece is arranged between one end of the limiting frame and the floating frame.

[0009] Preferably, when the elastic piece is in a reset state, the upper end of the lower demolding block protrudes from the inner wall of the forming cavity, and the lower end of the upper demolding block protrudes from the bottom wall of the forming block.

[0010] When the lower mold and the upper mold are in a combined state, the upper end of the lower demolding block and the inner wall of the forming cavity are smoothly connected, and the bottom of the upper demolding block and the bottom wall of the forming block are smoothly connected.

[0011] Preferably, the floating frame arranged on the top of the upper mold is provided with a through groove corresponding to the injection port.

[0012] Preferably, the floating frame is provided with a guide column corresponding to the limiting frame, the limiting frame is provided with a guide hole matched with the guide column, and the guide column and the guide hole are movably guided.

[0013] The elastic piece is a spring, and the elastic piece is sleeved outside the guide column.

[0014] Preferably, the four corners of the lower mold and the upper mold are provided with first through holes matched with the abutting columns, and the abutting columns and the first through holes are movably guided.

[0015] Preferably, the forming block and the upper mold are provided with second through holes matched with the upper demolding block, and the upper demolding block and the second through holes are movably connected.

[0016] The lower mold is provided with third through holes matched with the lower demolding block, and the lower demolding block and the third through holes are movably connected.

[0017] Compared with the prior art, the automobile rearview mirror injection molding mold has the following beneficial effects:

[0018] The automobile rearview mirror injection molding mold, through the automatic demolding assembly, can realize automatic demolding of the molded part after the lower mold and the upper mold are separated by the elastic force of the elastic member, the elastic member is contracted and stored when the lower mold and the upper mold are combined, and the elastic member is reset after being separated, so that automatic demolding is realized without setting a driving source, the structure is simple, use is convenient, efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the utility model;

[0020] Figure 2 is a structural schematic view of the utility model in a state that the lower mold and the upper mold are separated;

[0021] Figure 3 is a structural schematic view of the utility model Figure 2 in another view angle;

[0022] Figure 4 is a structural schematic view of the utility model in a state that the upper mold is disassembled;

[0023] Figure 5 is a structural schematic view of the utility model in a state that the lower mold is disassembled.

[0024] In the figure: 1, lower mold; 2, upper mold; 3, support; 4, floating frame; 5, injection port; 6, limiting frame; 7, guide column; 8, molding cavity; 9, abutting column; 10, lower demolding module; 11, molding block; 12, upper demolding module; 13, guide hole; 14, elastic member; 15, through slot; 16, first through hole; 17, second through hole; 18, third through hole. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0026] For example, Figures 1-5The utility model discloses an automobile rearview mirror injection molding mold, including lower mould 1, set up in the upper of lower mould 1 upper mould 2, set up in the top of lower mould 1 forming cavity 8, set up in the bottom of upper mould 2 forming block 11 and set up in the upper end of upper mould 2 injection port 5, be provided with automatic demoulding assembly on lower mould 1 and upper mould 2, and automatic demoulding assembly includes the float frame 4 of setting up in the bottom of lower mould 1 and the top of upper mould 2, be provided with the through slot 15 of corresponding injection port 5 on the top of float frame 4 of upper mould 2, and the four corners of the side of two float frame 4 symmetry are provided with the abutment column 9, and the lower end of abutment column 9 on upper mould 2 can extend to the bottom of upper mould 2, and the upper end of abutment column 9 on lower mould 1 can extend to the top of lower mould 1, specifically, the four corners of lower mould 1 and upper mould 2 are provided with the first through -hole 16 of adapting with abutment column 9, and abutment column 9 and first through -hole 16 movable guide cooperation, and abutment column 9 extends through first through -hole 16, and the inside movable of forming block 11 is provided with upper demoulding module 12, and the upper end of upper demoulding module 12 extends to the top of upper mould 2 and is fixed in the bottom of the upper float frame 4, and the lower end of upper demoulding module 12 can extend to the bottom of forming block 11, specifically, forming block 11 and upper mould 2 are provided with the second through -hole 17 of corresponding and adapting with upper demoulding module 12, and upper demoulding module 12 is movably connected with second through -hole 17, and upper demoulding module 12 extends through second through -hole 17, and the inside movable of lower mould 1 is provided with lower demoulding module 10 with corresponding forming cavity 8, and the bottom of lower demoulding module 10 extends to the bottom of lower mould 1 and is fixed in the top of the lower float frame 4, and the upper end of lower demoulding module 10 can extend to the inner chamber of forming cavity 8, specifically, lower mould 1 is provided with the third through -hole 18 of corresponding and adapting with lower demoulding module 10, and lower demoulding module 10 is movably connected with third through -hole 18, and lower demoulding module 10 extends through third through -hole 18, and the opposite side of upper mould 2 and lower mould 1 is provided with the " L " shaped limit frame 6, and the elastic element 14 is arranged between one end of limit frame 6 and float frame 4, and the guide column 7 of corresponding limit frame 6 is arranged on float frame 4, and the guide hole 13 of adapting with guide column 7 is arranged on limit frame 6, and guide column 7 and guide hole 13 movable guide cooperation, and the elastic element 14 is spring, and the elastic element 14 is sleeved on the outside of guide column 7, when the reset state of elastic element 14, the upper end of lower demoulding module 10 protrudes from the inner wall of forming cavity 8, and the lower end of upper demoulding module 12 protrudes from the bottom wall of forming block 11, when the combined state of lower mould 1 and upper mould 2, the upper end of lower demoulding module 10 and the inner wall of forming cavity 8 smoothly transition, and the bottom of upper demoulding module 12 and the bottom wall of forming block 11 smoothly transition.

[0027] In use, the lower mold 1 and the upper mold 2 are combined, the two groups of abutting columns 9 abut at the close end, the abutting columns 9 drive the floating frame 4 to displace, the elastic member 14 contracts, the bottom of the upper demolding module 12 is smoothly connected with the bottom wall of the forming block 11, the top of the lower demolding module 10 is smoothly connected with the inner wall of the forming cavity 8, then injection molding is carried out through the injection port 5, after that, cooling is carried out to realize forming, after forming, the lower mold 1 and the upper mold 2 are separated, the elastic member 14 gradually resets, the upper demolding module 12 gradually protrudes from the bottom wall of the forming block 11, and the forming part is fixed and moved, the upper end of the lower demolding module 10 gradually protrudes from the inner wall of the forming cavity 8, and the forming part is pushed up, and then whether the forming part is attached to the inner wall of the forming cavity 8 or the outer wall of the forming block 11, the forming part can be separated.

[0028] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model, and the utility model can have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An automobile rearview mirror injection molding mold, comprising 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); characterized in that 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 four corners of the side close to each other of the two floating frames (4) are symmetrically provided with abutting columns (9), the lower end of the abutting column (9) on the upper mold (2) can extend to the bottom of the upper mold (2), the upper end of the abutting column (9) on the lower mold (1) can extend to the top of the lower mold (1), the inside of the molding block (11) is movably provided with an upper demolding module (12), and the upper end of the upper demolding module (12) extends to the top of the upper mold (2) and is fixed at the bottom of the upper floating frame (4), the inside of the lower mold (1) is movably provided with a lower demolding module (10) corresponding to the molding cavity (8), and the bottom of the lower demolding module (10) extends to the bottom of the lower mold (1) and is fixed at the top of the lower floating frame (4), the side away from each other of the upper mold (2) and the lower mold (1) are provided with a limiting frame (6) in the shape of "L", and an elastic element (14) is arranged between one end of the limiting frame (6) and the floating frame (4).

2. The injection molding die for an automobile rearview mirror according to claim 1, wherein: When the elastic element (14) is in the reset state, the upper end of the lower demolding module (10) protrudes from the inner wall of the molding cavity (8), and the lower end of the upper demolding module (12) protrudes from the bottom wall of the molding block (11); When the lower mold (1) and the upper mold (2) are in the combined state, the upper end of the lower demolding module (10) smoothly transitions with the inner wall of the molding cavity (8), and the bottom of the upper demolding module (12) smoothly transitions with the bottom wall of the molding block (11).

3. The injection molding die for an automotive mirror according to claim 1, wherein: 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).

4. The injection molding die for an automotive mirror according to claim 1, wherein: The floating frame (4) is provided with a guide column (7) corresponding to the limiting frame (6), the limiting frame (6) is provided with a guide hole (13) matched with the guide column (7), and the guide column (7) and the guide hole (13) are movably guided and matched; The elastic element (14) is a spring, and the elastic element (14) is sleeved outside the guide column (7).

5. The injection molding die for an automotive mirror according to claim 1, wherein: The four corners of the lower mold (1) and the upper mold (2) are provided with a first through hole (16) matched with the abutting column (9), and the abutting column (9) and the first through hole (16) are movably guided and matched.

6. The injection molding die for an automotive mirror according to claim 1, wherein: The molding block (11) and the upper mold (2) are both provided with a second through hole (17) corresponding to and matched with the upper demolding module (12), and the upper demolding module (12) and the second through hole (17) are movably connected; The lower mold (1) is provided with a third through hole (18) corresponding to and matched with the lower demolding module (10), and the lower demolding module (10) and the third through hole (18) are movably connected.

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