CN219076393U

CN219076393U - Double-colored injection mold of lid

Info

Publication number: CN219076393U
Application number: CN202223574897.8U
Authority: CN
Inventors: 张昆勇
Original assignee: Jiahesheng Xiamen Molding Technology Co ltd
Current assignee: Jiahesheng Xiamen Molding Technology Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-26
Anticipated expiration: 2032-12-30

Abstract

The utility model provides a double-color injection mold of a cover body, which comprises a first color injection mold and a second color injection mold, wherein injection molding of two parts of the cover body with different materials is completed through the first color injection mold and the second color injection mold; on one hand, a cover body groove handle is formed by using a forming block, on the other hand, a product after the first injection molding is stopped on a first rear die by using the forming block and then enters a secondary injection molding frame body after rotating, and finally, the cover body after the injection molding is pushed by a thimble plate to push a lower die core, so that the cover body is pushed to be separated from the forming block, and the phenomenon that marks are left on the cover body due to the fact that the cover body is directly pushed by a thimble is avoided, so that the product appearance is influenced; the plurality of pushing mechanisms arranged on the second upper die core are utilized, so that the cover body is prevented from being clamped on the second upper die core when the second injection molding is completed and the die is opened, a product is lifted on the lower die core, and the automatic demolding of the cover body is realized.

Description

Double-colored injection mold of lid

Technical Field

The utility model relates to the field of molds, in particular to a double-color injection mold of a cover body.

Background

The mould is the instrument that is used for making the shaping product, makes the product of different shapes through the different shapes of mould, and the lid that is used for holding the coffee bean case as shown in fig. 1-2, the lid includes the panel of hard gum and the framework of soft gum, is provided with the handle on the panel, and the framework is fixed in the one side that the panel kept away from the handle, and the one side periphery that the framework kept away from the panel sets up the back-off. Firstly, need be through the injection moulding of two double-shot moulding during injection moulding, secondly, in order holistic aesthetic property during this lid of shaping, it is smooth that the lid surface must be no trace, if adopt the mode that realizes the lid drawing of patterns through thimble top pushing lid recess easily leave the trace of thimble in the lid recess, influence pleasing to the eye, finally because the lid need be through framework and box opening part block for one side periphery that the framework was kept away from the panel sets up the back-off, the mould can block at last mould benevolence when the die sinking, can't realize automatic drawing of patterns, consequently, how the shaping injection moulding lid is the problem that needs to be solved urgently.

Disclosure of Invention

The utility model provides a double-color injection mold of a cover body, and aims to solve the technical problem of how to mold an injection molded cover body.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the double-color injection mold comprises a first color injection mold and a second color injection mold, wherein the first color injection mold comprises a first front mold and a first rear mold, the second color injection mold comprises a second front mold and a second rear mold, and the shapes and the sizes of the first rear mold and the second rear mold are consistent;

the first rear die and the second rear die comprise a lower fixed die, a lower die core and an ejector pin plate, the lower die core is arranged on the lower fixed die, an ejector pin is fixed on the lower end face of the lower die core, the ejector pin slidably penetrates through the lower fixed die to extend downwards to the ejector pin plate and be fixed, a forming block is arranged on the lower die core, and the forming block penetrates through the lower die core to be fixed with the lower fixed die;

the first front die comprises a first upper movable die and a first upper die core, the first upper die core is arranged on the lower end face of the first upper movable die, a first forming groove is formed in the first upper die core, and the first upper die core and the lower die core form a first cavity for forming the panel;

the second front mould comprises a second upper movable mould and a second upper mould core, the second upper mould core is arranged on the lower end face of the second upper movable mould, a forming gap with a rectangular frame is formed in the lower end face of the second upper mould core, a second forming groove is formed in the second upper mould core, a plurality of pushing mechanisms are arranged around the periphery of the forming gap, away from the forming gap, and the second upper mould core and the lower mould core form a second cavity of the forming cover body.

Further, the pushing mechanism comprises a through hole with a step on one side of the second upper die core and a top block which is slidably arranged in the through hole, a limiting block is arranged on one side of the upper end of the top block, a round groove is formed in the top block, a spring is arranged in the round groove, and the step of the through hole is matched with the limiting block to limit the top block to slide downwards.

Further, the second upper die core is provided with glue inlet pipelines at four corners of the forming gap, and the glue inlet pipelines are communicated with the forming gap.

Further, a strip-shaped groove is further formed in the middle of the forming block along the length direction.

Further, the pushing mechanisms comprise 4 pushing mechanisms which are symmetrically arranged on two sides of the die core respectively.

Further, the first rear mold and the second rear mold are symmetrically arranged on a rotary table, and the rotary table can drive the first rear mold and the second rear mold to rotate and switch.

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

1. according to the utility model, injection molding of two parts of the cover body with different materials is completed through the first color injection mold and the second color injection mold.

2. According to the utility model, on one hand, the cover body groove handle is formed by the forming block, on the other hand, the product after the first injection molding is stopped on the first rear die by the forming block and then is rotated to enter the secondary injection molding, and finally, the vehicle cover body after the injection molding is pushed by the ejector plate to push the lower die core, so that the cover body is pushed to be separated from the forming block, and the phenomenon that marks are left on the cover body due to the ejection of the ejector pin and the attractive appearance of the product are avoided.

3. The utility model can avoid the phenomenon that the cover body is blocked on the second upper die core when the die is opened after the second injection molding is finished by utilizing the plurality of pushing mechanisms arranged on the second upper die core, so that the product cannot be automatically demolded.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a cover structure;

FIG. 2 is a schematic view of another angular structure of the cover;

FIG. 3 is a schematic view of the overall structure of a two-color injection mold of the cap of the present utility model;

FIG. 4 is a schematic view of a first back mold and a second back mold mechanism of a dual color injection mold of the cover of the present utility model;

fig. 5 is an exploded schematic view of a first rear mold and a second rear mold of a double-shot injection mold of the cap of the present utility model;

FIG. 6 is a schematic view of a first front mold structure of a dual-color injection mold of the cover of the present utility model;

FIG. 7 is a schematic view of a second front mold structure of a dual-color injection mold of the cover of the present utility model;

fig. 8 is a schematic structural view of a pushing mechanism of a two-color injection mold of the cover body of the present utility model.

Description of the main reference signs

10. A first front mold; 101. a first upper movable die; 102. a first upper mold core; 1021. a first molding groove;

20. a second front mold; 201. a second upper movable die; 202. a second upper mold core; 2021. a second molding groove; 2022. forming a gap;

21. a pushing mechanism; 211. a through hole; 2111. a step; 212. a top block; 2121. a limiting block; 213. a spring;

30. a lower die; 301. molding blocks; 3011. a bar-shaped groove;

40. a lower die core; 401. a push rod;

50. a needle ejection plate;

60. a turntable;

70. a first color injection mold;

80. a second color injection mold;

90. a cover body; 901. a panel; 902. a frame; 903. a groove; 904. a handle.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Examples

As shown in fig. 1-2, the cover 90 for holding a coffee bean box comprises a hard plastic panel 901 and a soft plastic frame 902, wherein a groove 903 is formed in the panel 901, a handle 904 is arranged in the groove 903, the frame 902 is fixed on one surface of the panel 901 far away from the handle 904, an inverted buckle is arranged on the periphery of one side of the frame 902 far away from the panel 901, and the surface of the cover 90 is smooth and has no trace.

Referring to fig. 3, the utility model discloses a double-shot injection mold for a cover body, which comprises a first-shot injection mold 70 and a second-shot injection mold 80, wherein the first-shot injection mold 70 comprises a first front mold 10 and a first rear mold, the second-shot injection mold 80 comprises a second front mold 20 and a second rear mold, the shapes and the sizes of the first rear mold and the second rear mold are consistent, the first front mold 10 is matched with the first rear mold to realize an injection molding finished panel 901, the panel 901 stays on the first rear mold, the first front mold 10 is switched into the second front mold 20 to realize injection molding of a frame 902 part on the cover body 90, further, the first rear mold and the second rear mold are symmetrically arranged on a rotating disc 60, the rotating disc 60 can drive the rotation switching of the positions of the first rear mold and the second rear mold, the first front mold 10 and the second front mold 20 can be accurately aligned through the switching of the forms of the rotating disc 60, the efficiency is improved by replacing manual pick-and place operation, and the product precision is high.

Referring to fig. 4 to 6, the first rear mold and the second rear mold each include a lower fixed mold 30, a lower mold core 40 and an ejector plate 50, the lower mold core 40 is disposed on the lower fixed mold 30, an ejector rod 401 is fixed on the lower end surface of the lower mold core 40, the ejector rod 401 slidably extends downward through the lower fixed mold 30 to the ejector plate 50 and is fixed, a molding block 301 is disposed on the lower mold core 40, and the molding block 301 is fixed with the lower fixed mold 30 through the lower mold core 40; the first front mold 10 comprises a first upper movable mold 101 and a first upper mold core 102, wherein the first upper mold core 102 is arranged on the lower end surface of the first upper movable mold 101, the first upper mold core 102 is provided with a first forming groove 1021, and the first upper mold core 102 and the lower mold core 40 form a first cavity of a formed product; during die assembly and injection molding, hot melt glue is injected into the first cavity for molding, the cover body 90 is molded, the molding block 301 is used for molding the groove 903 of the cover body 90, further, a strip-shaped groove 3011 is further formed in the middle of the molding block 301 along the length direction, the strip-shaped groove 3011 is used for molding the handle 904 of the cover body 90, the cover body 90 stays on the lower die core 40 when the die is opened, and the first front die 10 is switched into the second front die 20 to enter the injection molding of the next part on the basis of the panel 901. The utility model skillfully utilizes the forming block 301 and the strip-shaped groove 3011 to stay the panel 901 on the lower die core 40, so that the first upper die core 102 is prevented from taking away the panel 901 during die opening, and the subsequent secondary injection molding is prevented from being influenced.

Referring to fig. 6 to 7, the second front mold 20 includes a second upper movable mold 201 and a second upper mold core 202, the second upper mold core 202 is disposed on a lower end surface of the second upper movable mold 201, a forming slot 2022 with a rectangular frame is formed on a lower end surface of the second upper mold core 202, a second forming groove 2021 is formed in the forming slot 2022 of the second upper mold core 202, and the second upper mold core 202 and the lower mold core 40 form a second cavity of the formed product. When the mold is closed, the molding gap 2022 of the second upper mold core 202 is tightly attached to the panel 901, the second molding groove 2021 is aligned to the molding block 301, the second upper mold core 202 is provided with glue inlet pipelines at four corners of the molding gap 2022, the glue inlet pipelines are communicated with the molding gap 2022, hot melt glue enters the molding gap 2022 through the glue inlet pipelines and is used for molding a frame 902 part on the panel 901, and the full filling of the molding gap 2022 is ensured through the 4 glue inlet pipelines.

Referring to fig. 5, 7 and 8, a plurality of pushing mechanisms 21 are disposed on the periphery of the forming gap 2022 away from the forming gap 2022, the pushing mechanisms 21 include a through hole 211 formed on one side of the second upper die 202 and having a step 2111, and a top block 212 slidably disposed in the through hole 211, a limiting block 2121 is disposed on one side of the upper end of the top block 212, a circular groove is formed in the top block 212, a spring 213 is disposed in the circular groove, and the step 2111 of the through hole 211 cooperates with the limiting block 2121 to limit the top block 212 to slide out downwards. Specifically, during mold closing, the panel 901 pushes the top block 212 to compress the spring 213, the single block moves upwards to abut against the second upper movable mold 201, and during mold opening, the second upper movable mold 201 drives the second upper mold core 202 to move upwards, one end of the spring 213 abuts against the second upper movable mold 201, the other end pushes the top block 212 to continuously push the panel 901 downwards, and the lower end surface of the top block 212 continuously pushes the panel 901 onto the lower mold core 40, so that the back-off arranged on the periphery of the frame 902 of the second upper mold core 202 is separated from the second upper mold core 202 in the upward movement process, and a product after secondary injection molding stays on the lower mold core 40. Further, the pushing mechanism 21 of the present utility model includes 4 pushing mechanisms symmetrically disposed on two sides of the mold core, so that the panel 901 is uniformly stressed, and the frame 902 is prevented from being unable to completely separate from the second upper mold core 202. The ejector pin plate 50 pushes the lower die core 40 to push the cover body 90 upwards to drop from the forming block 301, and the utility model can avoid the influence of marks on the cover body 90 caused by ejector pin ejection by pushing the lower die core 40 to eject the cover body 90.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a double-colored injection mold of lid for shaping the lid, including first color injection mold and second color injection mold, first color injection mold includes first front mould and first back mould, second color injection mold includes second front mould and second back mould, first back mould with shape, the size of second back mould are unanimous, its characterized in that:

2. The two-shot injection mold of a cover according to claim 1, wherein: the pushing mechanism comprises a through hole with a step on one side of the second upper die core and a top block which is slidably arranged in the through hole, a limiting block is arranged on one side of the upper end of the top block, a round groove is formed in the top block, a spring is arranged in the round groove, and the step of the through hole is matched with the limiting block to limit the top block to slide downwards.

3. The two-shot injection mold of a cover according to claim 1, wherein: and the second upper die core is provided with glue inlet pipelines at four corners of the forming gap, and the glue inlet pipelines are communicated with the forming gap.

4. The two-shot injection mold of a cover according to claim 1, wherein: a strip-shaped groove is further formed in the middle of the forming block along the length direction.

5. The two-shot injection mold of a cover according to claim 1, wherein: the pushing mechanisms comprise 4 pushing mechanisms which are symmetrically arranged on two sides of the die core respectively.

6. The two-shot injection mold of a cover according to claim 1, wherein: the first rear mould and the second rear mould are symmetrically arranged on a rotary table, and the rotary table can drive the first rear mould and the second rear mould to rotate and switch.