Optical product injection mold

Abstract

The utility model discloses an optical product injection mold, including panel, fixed mould plate, movable mould plate, panel insert piece, fixed mould insert piece, movable mould insert piece, oil cylinder fixed plate, oil cylinder, lock module, the panel, fixed mould plate, movable mould plate are in turn and rely on the connection together, and the lower part of panel insert piece fixed on the panel is inserted fixed mould insert piece, and fixed mould insert piece is fixed on fixed mould plate, and the bottom surface of fixed mould insert piece is in abutment with movable mould insert piece top surface, and the lower part of movable mould insert piece is fixed in movable mould plate, and the inner end of oil cylinder fixed plate is fixed in the outer wall of movable mould plate, and oil cylinder is installed on oil cylinder fixed plate, and the piston rod rod end of oil cylinder is fixed in the outer end of lock module. When injection moulding, in the first mould closing stage, fixed mould plate and movable mould plate mould, and panel insert piece is inserted into fixed mould insert piece, and injection molding machine starts injection moulding, and the cavity is filled full, and the injection molding machine platform closes the mould again, and forces the front mould insert piece to the mould cavity in mould and exerts pressure, to satisfy the strict optical requirement of optical product, and improve the optical microstructure of optical product.

Description

Technical Field

[0001] This utility model relates to an injection mold, and more particularly to an injection mold for optical products. Background Technology

[0002] Plastic injection molds are tools used to produce plastic products and have a wide range of applications. For example... Figure 1 As shown, this is an optical product 100. To meet specific optical requirements, the product wall thickness is generally designed to be relatively thick. After injection molding, shrinkage marks significantly affect optical distortion. To facilitate production, hot runner molds are typically used to improve shrinkage marks. However, hot runner molds are expensive. Furthermore, during injection molding, longer injection cycles are often used to improve shrinkage marks and dimensions, resulting in long production cycles and low daily output. To address the shortcomings of existing molds, a new mold structure needs to be designed. Utility Model Content

[0003] The purpose of this invention is to provide an injection mold for optical products that meets optical requirements.

[0004] To achieve the above objectives, the technical solution of this utility model is:

[0005] This utility model is an injection mold for optical products, including a panel, a fixed template, a moving template, a panel insert, a fixed template insert, a moving template insert, a cylinder fixing plate, a cylinder, and a locking module;

[0006] The panel, fixed template, and moving template are sequentially joined together. The upper end of the panel insert is fixed to the panel, the lower part of the panel insert is inserted into the middle groove of the fixed template insert, the top surface of the fixed template insert is fixed to the fixed template, the bottom surface of the fixed template insert abuts against the top surface of the moving template insert, and the lower part of the moving template insert is fixed inside the moving template insert. The lower part of the panel insert, the inner wall of the middle groove of the fixed template insert, and the top surface of the middle part of the moving template insert form a cavity. The inner end of the hydraulic cylinder fixing plate is fixed to the outer wall of the moving template insert, the cylinder body of the hydraulic cylinder is fixedly installed on the hydraulic cylinder fixing plate, the piston rod end of the hydraulic cylinder is fixed to the outer end of the locking module, and the inner end of the locking module is locked on the outer side of the fixed template and the moving template insert.

[0007] The bottom surface of the panel and the top surface of the fixed template may be in a state of being attached or not attached.

[0008] This utility model also includes a hydraulic cylinder mediator; the middle part of the hydraulic cylinder fixing plate has a sliding groove, the cylinder body of the hydraulic cylinder is fixed in the sliding groove, the locking module is slidably connected in the sliding groove, the piston rod end of the hydraulic cylinder is fixed to the outer end of the hydraulic cylinder mediator, and the inner end of the hydraulic cylinder mediator is fixedly sleeved in the middle of the locking module.

[0009] The inner side of the locking module has an inwardly protruding upper locking block and a lower locking block; the upper locking block and the lower locking block are respectively locked onto the fixed template and the moving template.

[0010] After adopting the above solution, this utility model includes a panel, a fixed template, a moving template, a panel insert, a fixed mold insert, a moving mold insert, a hydraulic cylinder fixing plate, a hydraulic cylinder, and a locking module. During injection molding, in the first mold closing stage, the fixed template and the moving template close the mold, and the panel insert is inserted into the fixed mold insert. The gap between the bottom surface of the panel insert and the top surface of the moving mold insert is greater than the thickness of the optical product. The injection molding machine starts injection molding and reaches the injection state according to the requirements. The cavity is fully filled, and the injection molding machine closes the mold again, forcing the front mold insert to apply pressure to the cavity inside the mold to meet the strict optical requirements of the optical product and improve the optical microstructure that cannot meet the optical requirements due to shrinkage marks in the optical product.

[0011] This utility model has the following advantages:

[0012] 1. Large gate mold reduces manufacturing costs and eliminates the need for hot runners.

[0013] 2. This utility model can start the cooling zone at the same time as the second pressure is applied, shortening the mold cooling cycle, while traditional molds need to hold pressure before they can start cooling.

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] Figure 1 It is an isometric drawing of the product;

[0016] Figure 2 This is a top view of the present invention;

[0017] Figure 3 yes Figure 2 Sectional view along line FF;

[0018] Figure 4 yes Figure 2 Sectional view along line EE;

[0019] Figure 5 This is an isometric view of the hydraulic cylinder fixing plate, hydraulic cylinder, and lock module of this utility model;

[0020] Figure 6 This is a sectional view of the hydraulic cylinder fixing plate, hydraulic cylinder, and lock module of this utility model;

[0021] Figure 7 This is a schematic diagram of the first mold-closing stage of this utility model;

[0022] Figure 8 This is a schematic diagram of the second mold-closing stage of this utility model. Detailed Implementation

[0023] like Figures 2-4As shown, this utility model is an injection mold for optical products, including a panel 1, a fixed template 2, a moving template 3, a panel insert 4, a fixed template insert 5, a moving template insert 6, a cylinder fixing plate 7, a cylinder 8, a locking module 9, a cylinder spacer 10, a square iron 20, a bottom plate 30, a top plate 40, and a flat ejector rod 50.

[0024] The panel 1, fixed template 2, and moving template 3 are sequentially joined together. The moving template 3 is fixed to the base plate 30 by square iron 20. The top plate 40 is positioned between the moving template 3 and the base plate 30. The lower end of the flat ejector rod 50 is fixed to the top plate 40, and the upper end of the flat ejector rod 50 passes through the moving template 3 and the moving mold insert 6 before extending into the cavity. The upper end of the panel insert 4 is fixed to the panel 1, and the lower part of the panel insert 4 is inserted into the central groove 51 of the fixed mold insert 5. The top surface of the fixed mold insert 5 is fixed to the fixed template. 2. The bottom surface of the fixed mold insert 5 abuts against the top surface of the moving mold insert 6. The lower part of the moving mold insert 6 is fixed inside the moving template 3. The lower part of the panel insert 4, the inner wall of the groove of the fixed mold insert 5, and the top surface of the middle part of the moving mold insert 6 form a cavity. The inner end of the cylinder fixing plate 7 is fixed to the outer wall of the moving template 3. The cylinder body of the cylinder 8 is fixedly installed on the cylinder fixing plate 7. The piston rod end of the cylinder 8 is fixed to the outer end of the locking module 9. The inner end of the locking module 9 is locked on the outer side of the fixed template 2 and the moving template 3.

[0025] The bottom surface of the panel 1 and the top surface of the fixed template 2 may be in a state of being attached or not attached.

[0026] like Figure 5 , Figure 6 As shown, the cylinder fixing plate 7 has a groove 71 in the middle. The cylinder body of the cylinder 8 is fixed in the groove 71. The locking module 9 is slidably connected in the groove 71. The piston rod end of the cylinder 8 is fixed to the outer end of the cylinder medial 10. The inner end of the cylinder medial 10 is fixedly sleeved in the middle of the locking module 9.

[0027] The inner side of the locking module 9 has an inwardly protruding upper locking block 91 and a lower locking block 92; the upper locking block 91 and the lower locking block 92 are respectively locked onto the fixed template and the moving template 3.

[0028] like Figure 4 , Figure 5 As shown, the working principle of this utility model is as follows:

[0029] 1. In the first mold closing stage, the fixed mold plate 2 and the moving mold plate 3 close together. The panel insert 4 is inserted into the fixed mold insert 5. The gap between the bottom surface of the panel insert 4 and the top surface of the moving mold insert 6 is greater than the thickness of the optical product 100. The injection molding machine reaches the mold closing stage as shown. Figure 7 State A is shown, where the bottom surface of panel 1 and the top surface of fixed template 2 are not in contact, and there is a 3mm gap L between the bottom surface of panel 1 and the top surface of fixed template 2. The hydraulic cylinder 8 applies pressure, and the locking module 9 fixes the fixed template 2 and the moving template 3.

[0030] 2. The injection molding machine starts injection molding and reaches the injection state as required, with the cavity fully filled.

[0031] 3. The injection molding machine closes the mold again, reaching the desired state. Figure 8 State B, as shown, means that the bottom surface of panel 1 is in contact with the top surface of fixed template 2, which forces panel insert 4 to apply pressure to the optical product 100 in the mold cavity to meet the product's strict optical requirements.

[0032] 4. During the secondary pressure application, the cavity pressure is high, and the product design results in a material overflow head, which is subsequently removed by laser cutting.

[0033] 5. Finally, the optical product 100 is ejected through the flat top rod 50.

[0034] It should be noted that the distance between state A and state B can be controlled by a solenoid valve, making adjustment more convenient and reducing the need for frequent modifications to optical requirements, thus mitigating the impact of shrinkage marks on the product's optics.

[0035] The above description is merely a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the patent application and the contents of the specification of the present utility model should still fall within the scope of the patent of the present utility model.

Claims

1. An injection mold for optical products, characterized in that: Includes panel, fixed template, moving template, panel insert, fixed template insert, moving template insert, hydraulic cylinder fixing plate, hydraulic cylinder, and locking module; The panel, fixed template, and moving template are sequentially joined together. The upper end of the panel insert is fixed to the panel, the lower part of the panel insert is inserted into the middle groove of the fixed template insert, the top surface of the fixed template insert is fixed to the fixed template, the bottom surface of the fixed template insert abuts against the top surface of the moving template insert, and the lower part of the moving template insert is fixed inside the moving template insert. The lower part of the panel insert, the inner wall of the middle groove of the fixed template insert, and the top surface of the middle part of the moving template insert form a cavity. The inner end of the hydraulic cylinder fixing plate is fixed to the outer wall of the moving template insert, the cylinder body of the hydraulic cylinder is fixedly installed on the hydraulic cylinder fixing plate, the piston rod end of the hydraulic cylinder is fixed to the outer end of the locking module, and the inner end of the locking module is locked on the outer side of the fixed template and the moving template insert.

2. The injection mold for optical products according to claim 1, characterized in that: It also includes a hydraulic cylinder separator; the middle part of the hydraulic cylinder fixing plate has a sliding groove, the cylinder body of the hydraulic cylinder is fixed in the sliding groove, the locking module is slidably connected in the sliding groove, the piston rod end of the hydraulic cylinder is fixed to the outer end of the hydraulic cylinder separator, and the inner end of the hydraulic cylinder separator is fixedly sleeved in the middle of the locking module.

3. The injection mold for optical products according to claim 1, characterized in that: The inner side of the locking module has an inwardly protruding upper locking block and a lower locking block; the upper locking block and the lower locking block are respectively locked onto the fixed template and the moving template.

Images