Projector top shell injection molding mold

Abstract

The utility model provides a projector top shell injection molding mould which comprises a fixed mould assembly and a movable mould assembly, the movable mould assembly is installed on the right side of the fixed mould assembly, the fixed mould assembly comprises a bottom plate, square iron, a movable mould plate, a core plate, a driving part, a top plate, an ejector pin and a hot runner part, and the movable mould plate is installed on the left side of the movable mould assembly. The square iron and the bottom plate are sequentially fixed to the left side of the movable mold plate, the core plate is fixed to the movable mold plate and corresponds to the position between the movable mold plate and the movable mold assembly, the driving components are fixed to the upper end and the lower end of the bottom plate, and the upper side and the lower side of the top plate are fixed to the power output ends of the two driving components respectively. The left end of the ejector pin is fixed to the top plate, the right end of the ejector pin sequentially penetrates through the movable mold plate and the core plate, the left end of the hot runner component is fixed to the bottom plate, the right end of the hot runner sequentially penetrates through the top plate, the movable mold plate and the core plate, and the projector top shell mold has the advantages that the outer surface of a projector top shell can be smooth and flat, and the attractiveness of the projector top shell is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of mold structure design, in particular to an injection molding mold for a projector top shell. Background Art

[0002] Plastic products are generally made by injecting plastic raw materials into molds using injection molding machines, and then cooling and molding them in the molds. Injection molds are divided into fixed molds and movable molds. The fixed mold is installed at the fixed end of the injection molding machine, and the plastic raw materials are injected from the fixed mold. The gate position on the product will leave marks, while the movable mold is installed at the movable end of the injection molding machine. After the product is finalized and the mold is opened, the product is attached to the movable mold, and the ejector pin of the movable mold is driven by the ejector rod of the injection molding machine to eject the product. Similarly, the position corresponding to the ejector pin on the product will also leave marks. For the manufacture of the projector top shell, the fixed mold side is generally injected with glue, and the movable mold side is ejected. However, with the continuous improvement of product quality requirements, manufacturers hope that the projector top shell can present a smooth outer surface, and no marks of gates and ejectors are allowed on the projector top shell to improve its aesthetics. Therefore, it is necessary to produce a projector top shell injection molding mold to solve the above-mentioned problems. Utility Model Content

[0003] The utility model aims to provide an injection molding mold for a projector top shell to solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A projector top shell injection molding mold comprises a fixed mold component and a movable mold component, the movable mold component is installed on the right side of the fixed mold component, the fixed mold component comprises a bottom plate, a square iron, a movable mold plate, a core plate, a driving component, a top plate, an ejector pin and a hot runner component, the movable mold plate is installed on the left side of the movable mold component, the square iron and the bottom plate are fixed to the left side of the movable mold plate in sequence, the core plate is fixed on the movable mold plate and corresponds to between the movable mold plate and the movable mold component, the driving component is fixed to the upper and lower ends of the bottom plate, the upper and lower sides of the top plate are respectively fixed to the power output ends of two groups of driving components, the left end of the ejector pin is fixed to the top plate and the right end is sequentially inserted into the movable mold plate and the core plate, the left end of the hot runner component is fixed to the bottom plate, and the right end of the hot runner is sequentially inserted into the top plate, the movable mold plate and the core plate.

[0006] Further description of the utility model: a core-pulling slider is provided on the movable mold plate, the core-pulling slider is slidably connected with the movable mold plate, and four groups of core-pulling sliders are arranged and correspond to the four sides of the core plate respectively.

[0007] Further description of the utility model: the driving component includes a T-block, a driving rod and a cylinder, the large end of the T-block faces the left side, a T-slot matching the shape of the T-block is provided on the bottom plate, the left end of the cylinder is fixed on the top plate, the left end of the driving rod is fixed on the right end of the T-block, and the right end of the driving rod is fixed on the power output end of the cylinder.

[0008] Further description of the utility model: five groups of hot runner components are arranged, wherein the gate of one group of hot runners corresponds to the middle of the core plate, and the gates of the remaining four groups of hot runners correspond to the four corners of the core plate respectively.

[0009] Further description of the utility model: it also includes a first heat insulation board and a second heat insulation board, the first heat insulation board is fixed on the left end surface of the bottom plate, and the second heat insulation board is fixed on the right end surface of the movable mold assembly.

[0010] The beneficial effects of the utility model are as follows: when the fixed mold component and the movable mold component are closed, glue injection is performed, at this time, the top plate is close to one side of the bottom plate, and the plastic raw material is injected into the cavity in the core plate through the hot runner component. After the glue injection is completed, the product is cooled and shaped in the core plate, and the movable mold component is opened under the drive of the injection molding machine. Then, the driving component drives the top plate to move to the right and ejects the ejector to the right, so that the product is demoulded. By arranging both the gate and the ejector on the fixed mold component, after the product is molded, the gate marks and the ejector marks are left on the inner surface of the product, that is, the side that is invisible during use, so that the outer surface of the projector top shell is smooth and flat, and its aesthetics is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the overall structure diagram of the utility model;

[0012] Figure 2 It is a structural diagram of the fixed mold assembly and the first heat insulation board in the utility model;

[0013] Figure 3 It is a front view of the fixed mold assembly and the first heat insulation board in the utility model;

[0014] Figure 4 It is a top view of the fixed mold assembly and the first heat insulation board in the utility model;

[0015] Description of reference numerals:

[0016] 1. Fixed mold assembly; 11. Bottom plate; 111. T-slot; 12. Square iron; 13. Moving mold plate; 131. Core-pulling slider; 14. Core plate; 15. Driving component; 151. T-block; 152. Driving rod; 153. Cylinder; 16. Ejector plate; 17. Ejector pin; 18. Hot runner component; 2. Moving mold assembly; 3. First heat insulation board; 4. Second heat insulation board. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings:

[0018] like Figures 1 to 4 As shown, a projector top shell injection molding mold includes a fixed mold component 1 and a movable mold component 2, the movable mold component 2 is installed on the right side of the fixed mold component 1, the fixed mold component 1 includes a bottom plate 11, a square iron 12, a movable mold plate 13, a core plate 14, a driving component 15, a top plate 16, an ejector pin 17 and a hot runner component 18, the movable mold plate 13 is installed on the left side of the movable mold component 2, the square iron 12 and the bottom plate 11 are fixed to the left side of the movable mold plate 13 in sequence, and the core plate 14 is fixed to the movable mold plate 13 and corresponds to between the movable plate 13 and the movable mold assembly 2, the driving component 15 is fixed to the upper and lower ends of the bottom plate 11, the upper and lower sides of the top plate 16 are respectively fixed to the power output ends of the two groups of driving components 15, the left end of the ejector 17 is fixed to the top plate 16 and the right end is sequentially penetrated into the movable plate 13 and the core plate 14, the left end of the hot runner component 18 is fixed to the bottom plate 11, and the right end of the hot runner is sequentially penetrated into the top plate 16, the movable plate 13 and the core plate 14.

[0019] Glue injection is performed when the fixed mold assembly 1 and the movable mold assembly 2 are closed. At this time, the top plate 16 is close to one side of the bottom plate 11, and the plastic raw material is injected into the cavity in the core plate 14 through the hot runner component 18. After the glue injection is completed, the product is cooled and shaped in the core plate 14, and the movable mold assembly 2 is opened under the drive of the injection molding machine. Then, the driving component 15 drives the top plate 16 to move to the right and ejects the ejector 17 to the right, so that the product is demoulded. By arranging both the gate and the ejector 17 on the fixed mold assembly 1, after the product is molded, the gate marks and the ejector 17 marks are left on the inner surface of the product, that is, the side that is invisible during use, so that the outer surface of the projector top shell is smooth and flat, which greatly improves its aesthetics.

[0020] The movable platen 13 is provided with core-pulling sliders 131 , which are slidably connected to the movable platen 13 . Four groups of core-pulling sliders 131 are arranged and correspond to the four sides of the core plate 14 .

[0021] The outer periphery of the projector top shell is provided with lens mounting holes, heat dissipation holes and the like, and a core-pulling slider 131 is provided to form the side structure of the projector top shell, and the core-pulling slider 131 automatically withdraws from the hole position as the mold is opened, so that the product can be demolded smoothly.

[0022] The driving component 15 includes a T-block 151, a driving rod 152 and a cylinder 153. The large end of the T-block 151 faces the left side. The bottom plate 11 is provided with a T-slot 111 matching the shape of the T-block 151. The left end of the cylinder 153 is fixed to the top plate 16, the left end of the driving rod 152 is fixed to the right end of the T-block 151, and the right end of the driving rod 152 is fixed to the power output end of the cylinder 153.

[0023] When the ejector pin 17 needs to be ejected, the cylinder 153 extends the driving rod 152 to drive the ejector plate 16 to the right, and the T-block 151 can be easily installed into the T-slot 111 from the side of the bottom plate 11, making it easy to disassemble and assemble the cylinder 153.

[0024] The hot runner components 18 are provided in five groups, wherein the gate of one group of hot runners corresponds to the middle of the core plate 14, and the gates of the remaining four groups of hot runners correspond to the four corners of the core plate 14. By providing multiple groups of hot runner components 18, the gates are evenly distributed at different positions of the product, making the injection and plastic filling more uniform and smoother.

[0025] In this design, a first heat insulation board 3 and a second heat insulation board 4 are also included. The first heat insulation board 3 is fixed to the left end surface of the bottom plate 11, and the second heat insulation board 4 is fixed to the right end surface of the movable mold assembly 2. The first heat insulation board 3 and the second heat insulation board 4 can reduce the heat transfer from the fixed mold assembly 1 and the movable mold assembly 2 to the mounting metal plate of the injection molding machine, reduce heat loss, make the mold temperature of the fixed mold assembly 1 and the movable mold assembly 2 more stable, and improve the injection molding quality.

[0026] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A projector top shell injection molding mold, characterized in that: It includes a fixed mold assembly and a movable mold assembly, the movable mold assembly is installed on the right side of the fixed mold assembly, the fixed mold assembly includes a bottom plate, a square iron, a movable mold plate, a core plate, a driving component, a top plate, an ejector pin and a hot runner component, the movable mold plate is installed on the left side of the movable mold assembly, the square iron and the bottom plate are fixed to the left side of the movable mold plate in sequence, the core plate is fixed on the movable mold plate and corresponds to between the movable mold plate and the movable mold assembly, the driving component is fixed to the upper and lower ends of the bottom plate, the upper and lower sides of the top plate are respectively fixed to the power output ends of two groups of the driving components, the left end of the ejector pin is fixed to the top plate and the right end is sequentially penetrated in the movable mold plate and the core plate, the left end of the hot runner component is fixed to the bottom plate, and the right end of the hot runner is sequentially penetrated in the top plate, the movable mold plate and the core plate.

2. The injection molding mold for a projector top shell according to claim 1, characterized in that: The movable mold plate is provided with a core-pulling slider, which is slidably connected with the movable mold plate. Four groups of core-pulling sliders are arranged and correspond to the four sides of the core plate respectively.

3. The injection molding mold for a projector top shell according to claim 1, characterized in that: The driving component includes a T-block, a driving rod and a cylinder. The large end of the T-block faces the left side. The bottom plate is provided with a T-slot matching the shape of the T-block. The left end of the cylinder is fixed to the top plate. The left end of the driving rod is fixed to the right end of the T-block. The right end of the driving rod is fixed to the power output end of the cylinder.

4. The injection molding mold for a projector top shell according to claim 1, characterized in that: The hot runner components are arranged in five groups, wherein the gate of one group of the hot runners corresponds to the middle of the core plate, and the gates of the remaining four groups of the hot runners correspond to the four corners of the core plate respectively.

5. The injection molding mold for a projector top shell according to claim 1, characterized in that: It also includes a first heat insulation board and a second heat insulation board, wherein the first heat insulation board is fixed to the left end surface of the bottom plate, and the second heat insulation board is fixed to the right end surface of the movable mold assembly.

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