High-precision different-side coaxial die structure of optical lens cone
By setting guide columns, precise positioning components and the entire shovel base on the fixed and movable sides of the mold, the high-precision sliding positioning and synergistic effect of the mold is achieved, and the problem of complex and unstable positioning of the traditional mold structure is solved, and the hetero-side coaxial accuracy and optical performance of the plastic lens barrel are improved.
Patent Information
- Application Number
- CN202510367417.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2025-05-30
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The traditional mold structure is complex and unstable in positioning, resulting in low coaxial accuracy of the plastic lens barrel on the other side.
A high-precision hetero-side coaxial mold structure of optical lens barrel is designed. By setting guide columns, precise positioning components and shovel base integrals on the fixed and movable sides of the mold, precise sliding positioning and synergistic effects are achieved to ensure high-precision coordination of the mold.
The positioning accuracy and coaxial accuracy of the two sides of the mold are improved, ensuring that the size and shape error of the optical lens barrel is extremely small, and the optical performance and quality of the product are improved.
Smart Images
Figure CN120056374A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of mold manufacturing, and specifically to a high-precision non-symmetrical coaxial mold structure for an optical lens barrel. Background Art
[0002] As the market's requirements for the performance parameters of optical lenses are increasing day by day, the dimensional accuracy requirements for the "plastic lens barrel", an important component of the lens, are also rising. In particular, the coaxiality between the front group and the rear group of the lens is particularly important. The front group is on the fixed side of the mold, and the rear group is on the movable side of the mold. The coaxiality accuracy of the molded product is determined by the positioning accuracy on both sides of the mold. The positioning of the traditional mold structure on both sides is relatively complex, and there are too many parts involved in the positioning, resulting in unstable positioning accuracy, sometimes good and sometimes bad. The advantage of the new mold structure of the present invention is to simplify and precise the positioning of the fixed side and the movable side of the mold, improve the positioning accuracy on both sides of the mold, and thus improve the non-symmetrical coaxiality accuracy of the "plastic lens barrel".
[0003] Therefore, we propose a high-precision non-symmetrical coaxial mold structure for an optical lens barrel to solve the above problems. Summary of the Invention
[0004] (1) Technical Problems to be Solved
[0005] In view of the deficiencies of the prior art, the present invention provides a high-precision non-symmetrical coaxial mold structure for an optical lens barrel, which solves the problems raised in the above background art.
[0006] (2) Technical Solutions
[0007] The present invention specifically adopts the following technical solutions to achieve the above objectives:
[0008] A high-precision non-symmetrical coaxial mold structure for an optical lens barrel, including a fixed-side template and a movable-side template. In the mold-closed state: the fixed-side template and the movable-side template are closely attached together. The fixed-side template is slidably positioned on a guide pillar B, and the guide pillar B is fixedly connected to a face plate. The movable-side template slides on a precise positioning A, and the precise positioning A is fixed on a bottom plate. There is a precise positioning B on the fixed-side template, and there are a slider and a backhoe on the movable-side template. In the mold-closed state, the whole shank base will be located between the slider and the backhoe. The whole shank base is composed of two parts, namely shank base B and shank base A. The two parts are connected by a V-shaped groove to ensure the smoothness of sliding and the fixing strength.
[0009] Furthermore, the shapes and sizes of the fixed-side template and the movable-side template are in accordance with each other, and the accuracies are the same.
[0010] Furthermore, positioning holes corresponding to the guide pillar A and the precise positioning B are provided on the fixed-side template and the movable-side template.
[0011] Furthermore, there are precision positioning holes and guide pillar holes in the fixed-side template and the movable-side template. The two templates are locked together for the JG processing technology. The position dimensions between the positioning holes of the two templates are the same, avoiding errors caused by multiple clamping during separate processing.
[0012] Furthermore, the shovel base A in the overall shovel base does not participate in the positioning of the template during mold closing.
[0013] Furthermore, the fixed-side template and the movable-side template are made of high-strength alloy materials to withstand the huge pressure and impact force during the operation of the mold.
[0014] Furthermore, the installation accuracy of the guide pillar A and the precision positioning B is high, and the error control range is small, ensuring the accuracy of mold closing.
[0015] Furthermore, the surfaces of the slider and the backhoe are made of fully heat-treated materials. The slider groove is ground by the JG processing method, and the positioning accuracy is guaranteed within 0.003 mm.
[0016] (III) Beneficial effects
[0017] Compared with the prior art, the present invention provides a high-precision off-axis coaxial mold structure for an optical lens barrel, having the following beneficial effects:
[0018] In the present invention, through the precise cooperation of various components in the mold, such as the guide pillar and the template, the precision positioning components, etc., the accuracy and stability of mold closing are ensured, making the size and shape errors of the produced optical lens barrel extremely small, ensuring the optical performance and quality of the product. By adopting the integrated processing technology, high-precision installation and strict error control, product defects caused by processing and assembly errors are avoided, and the consistency and reliability of the product are improved.
[0019] In the present invention, key templates are made of high-strength alloy materials, and the slider and the backhoe are heat-treated and processed with high precision, enhancing the wear resistance, compressive resistance and impact resistance of the mold components, extending the service life of the mold. The precise mold structure design and efficient action coordination reduce the adjustment time and failure rate during the mold opening and closing process, improve the production efficiency, and reduce the production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a three-dimensional structure schematic diagram of the present invention;
[0021] Figure 2 is a bottom view of the three-dimensional structure of the present invention;
[0022] Figure 3 is a schematic diagram of the overall structure of the shovel base of the present invention.
[0023] In the figure: 1. Fixed side template; 2. Movable side template; 3. Guide pillar A; 4. Precision positioning A; 5. Slide block; 6. Guide pillar B; 7. Integral lifter; 8. Precision positioning B; 9. Panel; 10. Bottom plate; 11. Back lifter; 12. Lifter A; 13. Lifter B. Detailed implementation mode
[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.
[0025] Embodiment
[0026] As Figures 1-3 shown, a high-precision off-side coaxial mold structure for an optical lens barrel proposed in an embodiment of the present invention includes a fixed side template 1 and a movable side template 2. In the mold closing state: the fixed side template 1 is closely attached to the movable side template 2. The fixed side template 1 is slidably positioned on the guide pillar B6, and the guide pillar B6 is fixedly connected to the panel 9. The movable side template 2 slides on the precision positioning A4, and the precision positioning A4 is fixed on the bottom plate 10. There is a precision positioning B8 on the fixed side template 1, and there are a slide block 5 and a back lifter 11 on the movable side template 2. In the mold closing state, the integral lifter 7 will be located between the slide block 5 and the back lifter 11. The integral lifter 7 is composed of two parts, namely the lifter B13 and the lifter A12. The two parts are connected by a V-shaped groove to ensure the sliding smoothness and fixing strength.
[0027] 1. The cooperation between the fixed side template 1 and the guide pillar B6
[0028] The guide pillar B6 provides strict track constraints for the sliding of the fixed side template 1. This means that during the opening and closing of the mold, the fixed side template 1 can move along a predetermined straight track without deviation or shaking.
[0029] This precise guiding function ensures that the fixed side template 1 can accurately align with the movable side template 2 every time the mold is closed, thereby ensuring the accuracy and consistency of the mold cavity.
[0030] For example, when producing a series of optical lens barrels, the fixed side template 1 can accurately reach the predetermined position every time the mold is closed, resulting in extremely small dimensional and shape errors for each lens barrel.
[0031] 2. The cooperation between the movable side template 2 and the precision positioning A4
[0032] The precise positioning A4 provides highly accurate positioning for the sliding of the movable-side platen 2. This enables the movable-side platen 2 to maintain a very small positional deviation during movement.
[0033] When the mold is closed, the movable-side platen 2 can quickly and accurately fit with the fixed-side platen 1 to form a complete and highly accurate mold cavity.
[0034] The precise positioning of each component is crucial for the performance and reliability of the engine, and the same is true for the precise positioning A4 in the mold.
[0035] 3. Precise positioning B8 on the fixed-side platen 1
[0036] The precise positioning B8 further enhances the positional accuracy of the fixed-side platen 1 when the mold is closed. It cooperates with other positioning components to ensure that the position of the fixed-side platen 1 in three-dimensional space can be accurately controlled.
[0037] For example, in the mold for manufacturing high-precision parts, similar precise positioning components can ensure the extremely small tolerance requirements of the parts.
[0038] 4. The coordinated action of the slider 5, the backhoe 11 and the integral base 7
[0039] The design of the slider 5 and the backhoe 11 enables the mold to perform specific actions during the mold closing and opening processes, which may be used to form certain special structures or features of the lens barrel.
[0040] The integral base 7 is located between the slider 5 and the backhoe 11 when the mold is closed, and plays a role in pushing, restricting or coordinating their movements, ensuring the accuracy and stability of the mold actions.
[0041] Taking the injection mold for producing plastic products with complex shapes as an example, similar slider and base structures can achieve the complex shapes and structural features of the products.
[0042] 5. Integrated machining of the two platens
[0043] Lock the fixed-side platen 1 and the movable-side platen 2 together for the JG machining process, ensuring that the positional dimensions between the positioning holes of the two plates are highly consistent.
[0044] It avoids the errors that may occur due to multiple clamping during separate machining, and greatly improves the overall accuracy and mating accuracy of the mold.
[0045] Just like when machining the key components of precision machine tools, integrated machining can eliminate the errors caused by clamping differences and improve the accuracy and performance of the machine tools.
[0046] 6. Material selection and surface treatment
[0047] The fixed-side template 1 and the movable-side template 2 are made of high-strength alloy materials, enabling them to withstand the huge pressure and impact force during the operation of the mold, and ensuring the stability and durability of the mold during long-term use.
[0048] The surfaces of the slider 5 and the backhoe 11 have undergone full heat treatment and specific processing methods, improving their hardness, wear resistance, and positioning accuracy.
[0049] Key components are made of high-strength materials and special surface treatments to meet the performance requirements under extreme working conditions.
[0050] As Figure 2 shown, in some embodiments, the fixed-side template 1 and the movable-side template 2 are of the same shape and size and have the same precision. First, the same shape and size ensure that when the mold is closed, the two templates can fit perfectly, without gaps or misalignments caused by shape or size differences. This is crucial for forming a complete and precise mold cavity. For example, when producing an optical lens barrel, if the shapes and sizes of the templates do not match, it may result in uneven wall thickness of the lens barrel, affecting the optical performance.
[0051] As Figure 2 shown, in some embodiments, positioning holes for the corresponding guide post A3 and the precise positioning B8 are provided on the fixed-side template 1 and the movable-side template 2. These positioning holes provide accurate installation positions for the guide post A3 and the precise positioning B8, ensuring their precise fit with the template. This enables the guide post to stably guide the movement of the template during the opening and closing of the mold, while the precise positioning can ensure the precise relative position of the templates when the mold is closed.
[0052] As Figure 1 shown, in some embodiments, there are precise positioning holes and guide post holes in the fixed-side template 1 and the movable-side template 2. The two plates are locked together for the JG processing technology. The position dimensions between the positioning holes of the two plates are the same, avoiding errors caused by multiple clamping during separate processing. The existence of the precise positioning holes and the guide post holes provides a precise assembly reference for the fixed-side template 1 and the movable-side template 2. The position accuracy of these holes directly affects the relative position accuracy of the two templates after assembly, thus having an important impact on the final forming accuracy of the mold. Locking the two plates together for the JG processing technology has significant advantages. On the one hand, locking them together for processing can ensure that the two plates maintain a relatively fixed position relationship during the processing, enabling the processing tool to machine the positioning holes on the two plates with the same reference. This avoids the position deviation caused by each clamping during separate processing. On the other hand, the same position dimensions can ensure that during the assembly and use of the mold, the two templates can fit accurately without problems such as loose mold closing and dimensional deviation in the mold cavity caused by differences in the positions of the positioning holes.
[0053] AsFigure 3 As shown, in some embodiments, the base A12 in the overall base 7 does not participate in the positioning of the mold plates during mold closing. Since the base A12 does not participate in the mold plate positioning, this can make the mold positioning system more concise and clear, reducing the complex situations and error sources that may be caused by multiple components participating in the positioning simultaneously.
[0054] As Figure 2 shown, in some embodiments, the fixed-side mold plate 1 and the movable-side mold plate 2 are made of high-strength alloy materials to withstand the huge pressure and impact force during the operation of the mold. During the operation of the mold, when mold closing and injection molding or other forming processes are carried out, extremely high pressure will be generated. These pressures may come from the injection of the injection molding material, the forming process inside the mold, and the interaction between the mold components. The high-strength alloy material can ensure that the mold plates will not deform or be damaged under such a high-pressure environment, thus maintaining the accuracy and stability of the mold cavity.
[0055] As Figure 2 shown, in some embodiments, the installation accuracy of the guide post A3 and the precise positioning B8 is high, and the error control range is small, ensuring the accuracy of mold closing. The guide post A3 and the precise positioning B8 play a crucial guiding and positioning role in the mold structure. Their high-precision installation can ensure that during the mold closing process, the fixed-side mold plate 1 and the movable-side mold plate 2 can be accurately fitted together to form a mold cavity that meets the design requirements.
[0056] As Figure 2 shown, in some embodiments, the surfaces of the slider 5 and the backhoe 11 are made of fully heat-treated materials, and the slider 5 groove is ground by the JG processing method, with the positioning accuracy guaranteed within 0.003 mm. The fully heat-treated materials on the surfaces of the slider 5 and the backhoe 11 can significantly improve their hardness, wear resistance, and fatigue strength. This means that during the frequent mold opening and closing operations of the mold and the contact process with other components, they can better resist wear and deformation, thus extending the service life. Guaranteeing the positioning accuracy within 0.003 mm is a very strict requirement, which is crucial for the normal operation of the mold and the production of high-quality products.
[0057] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A high-precision coaxial mold structure for an optical lens barrel, comprising a fixed side mold plate (1) and a movable side mold plate (2), characterized in that: In the mold closing state: the fixed side mold plate (1) and the movable side mold plate (2) are tightly attached together, the fixed side mold plate (1) is slidably positioned on the guide column B (6), the guide column B (6) is fixedly connected to the panel (9), the movable side mold plate (2) slides on the precision positioning A (4), the precision positioning A (4) is fixed on the bottom plate (10), the fixed side mold plate (1) is provided with a precision positioning B (8), the movable side mold plate (2) is provided with a slider (5) and a backhoe (11), in the mold closing state, the shovel base as a whole (7) will be located between the slider (5) and the backhoe (11), the shovel base as a whole (7) is composed of two parts, namely the shovel base B (13) and the shovel base A (12), the two parts are connected by a V-shaped groove to ensure the sliding smoothness and fixing strength.
2. The optical lens barrel high-precision coaxial mold structure according to claim 1, characterized in that: The fixed side mold plate (1) and the movable side mold plate (2) are consistent in shape and size and have the same precision.
3. The optical lens barrel high-precision coaxial mold structure according to claim 1, characterized in that: Positioning holes corresponding to the guide pillars A (3) and the fine positioning B (8) are provided on the fixed side mold plate (1) and the movable side mold plate (2).
4. The optical lens barrel high-precision coaxial mold structure according to claim 1, characterized in that: The fixed side mold plate (1) and the movable side mold plate (2) are provided with precision positioning holes and guide post holes, and the two plates are locked together for JG processing. The position and size of the positioning holes of the two plates are the same, thus avoiding errors caused by multiple clamping during separate processing.
5. The optical lens barrel high-precision coaxial mold structure according to claim 1, characterized in that: The shovel base A (12) in the shovel base assembly (7) will not participate in the positioning of the mold plate during mold closing.
6. The optical lens barrel high-precision coaxial mold structure according to claim 1, characterized in that: The fixed side mold plate (1) and the movable side mold plate (2) are made of high-strength alloy material to withstand the huge pressure and impact force when the mold is working.
7. The optical lens barrel high-precision coaxial mold structure according to claim 1, characterized in that: The guide pin A (3) and the precision positioning B (8) have high installation accuracy and a small error control range, thereby ensuring the accuracy of mold closing.
8. The optical lens barrel high-precision coaxial mold structure according to claim 1, characterized in that: The surfaces of the slider (5) and the backhoe (11) are made of fully heat-treated materials, and the groove of the slider (5) is ground using a JG processing method, so that the positioning accuracy is guaranteed to be within 0.003 mm.