Acrylic convex lens upper and lower mold heating and shaping mechanism

Abstract

The utility model discloses an acrylic convex lens upper and lower die heating and shaping mechanism, and relates to the technical field of acrylic convex lens production, the acrylic convex lens upper and lower die heating and shaping mechanism comprises an equipment cabinet, a lower die device, an upper die device and a hydraulic cylinder, the lower die device is installed on the upper portion of the equipment cabinet, a plurality of forming grooves are reserved in the upper portion of the lower die device, and the hydraulic cylinder is installed on the lower die device. A first electric heating body is installed in the upper mold device, the upper mold device is located over the equipment cabinet, a plurality of forming protrusions are reserved on the lower portion of the upper mold device, a second electric heating body is installed in the upper mold device, and the hydraulic cylinder can drive the upper mold device to ascend and descend in a reciprocating mode. According to the upper and lower die heating and shaping mechanism for the acrylic convex lens, the upper and lower die devices with built-in electric heating bodies are adopted, so that accurate and uniform temperature distribution of an acrylic material in the forming process is ensured, material performance reduction and shape distortion caused by overheating or supercooling are effectively avoided, and the forming quality and stability of the lens are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of acrylic convex lens production, in particular to an upper and lower mold heating and shaping mechanism for acrylic convex lens. Background Art

[0002] Acrylic convex lenses are widely used in optical lens manufacturing due to their superior optical properties and processability. However, acrylic is susceptible to various factors during the molding process, such as temperature, pressure, and surface contact conditions, leading to uneven lens surface quality and difficulty in controlling shape accuracy. Traditional molding methods, such as injection molding or pressing, often struggle to achieve precise control during key steps such as heating, pressing, and demolding, which in turn affects final product quality and production efficiency.

[0003] In particular, improper temperature control or direct contact between the mold and the material during the heating and shaping stage can easily cause surface scratches, deformation, and stress concentration, severely hindering the high-quality production of acrylic convex lenses. Therefore, developing a heating and shaping mechanism that can precisely control temperature, effectively protect the material surface, and improve molding accuracy has become a pressing technical challenge in the field of optical lens manufacturing. Utility Model Content

[0004] In view of the deficiencies of the prior art, the present invention provides a heating and shaping mechanism for upper and lower molds of acrylic convex lens, which solves the problems raised by the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a heating and shaping mechanism for upper and lower molds of acrylic convex lens, including an equipment cabinet, and also including:

[0006] A lower mold device is installed on the upper part of the equipment cabinet, and a plurality of molding grooves are reserved on the upper part of the lower mold device, and an electric heating body is installed inside;

[0007] An upper mold device is located directly above the equipment cabinet, with a plurality of molding protrusions reserved at the lower portion of the upper mold device and a second electric heating element installed inside;

[0008] A hydraulic cylinder is used to drive the upper die assembly to move up and down.

[0009] Furthermore, columns are installed on the upper part of the equipment cabinet and on both sides of the lower mold device, a top plate is installed on the upper part of the columns, and the hydraulic cylinder is installed on the upper part of the top plate.

[0010] Furthermore, a plurality of guide shafts are installed between the equipment cabinet and the top plate, the outside of the guide shafts is slidably connected to a lifting seat, and the upper mold device is installed at the bottom of the lifting seat.

[0011] Furthermore, the lower mold device includes a lower mold base, the forming groove is arranged on the upper part of the lower mold base, the electric heating body is embedded in the interior of the lower mold base, and the bottom end of the lower mold base is connected to a lower heat insulation board.

[0012] Furthermore, the upper mold device includes an upper mold base, the second electric heating body is embedded in the interior of the upper mold base, the forming protrusion is arranged at the lower part of the upper mold base, and the top of the upper mold base is connected to an upper heat insulation board.

[0013] Furthermore, a cavity is reserved inside the lower mold base and the upper mold base, the electric heating body 1 and the electric heating body 2 are fixed inside the cavity, and the sides of the lower mold base and the upper mold base are reserved with reserved holes connected to the cavity.

[0014] Furthermore, the forming groove and the forming protrusion are both spherical structures, and the two are adapted to each other.

[0015] The utility model provides a heating and shaping mechanism for upper and lower molds of acrylic convex lenses. Compared with the existing technology, it has the following advantages:

[0016] The upper and lower mold heating and shaping mechanism of the acrylic convex lens adopts an upper and lower mold device with a built-in electric heater, which ensures that the acrylic material obtains accurate and uniform temperature distribution during the molding process, effectively avoids the degradation of material performance and shape distortion caused by overheating or overcooling, and significantly improves the molding quality and stability of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is a front view of the utility model;

[0019] Figure 3 This is a schematic diagram of the disassembly of the middle and lower mold devices of the utility model;

[0020] Figure 4 This is a schematic diagram of the disassembly of the upper mold device in the utility model;

[0021] Figure 5 This is a schematic structural diagram of the lower die base and the upper die base in the utility model;

[0022] Figure 6 It is a half-section view of the utility model during the molding process.

[0023] In the figure: 1. Equipment cabinet; 2. Lower mold device; 21. Lower mold base; 22. Molding groove; 23. Electric heating element 1; 24. Lower heat insulation board; 3. Upper mold device; 31. Upper mold base; 32. Electric heating element 2; 33. Upper heat insulation board; 34. Molding protrusion; 35. Cavity; 36. Reserved hole; 4. Hydraulic cylinder; 5. Lifting seat; 6. Column; 7. Guide shaft; 8. Top plate; 9. Acrylic convex lens; 10. Protective film. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-6 The utility model provides a technical solution: an acrylic convex lens upper and lower mold heating and shaping mechanism, mainly composed of an equipment cabinet 1, a lower mold device 2, an upper mold device 3, a hydraulic cylinder 4, a lifting seat 5, a column 6, a plurality of guide shafts 7 and a top plate 8. Among them, the lower mold device 2, the column 6, and the plurality of guide shafts 7 are all installed on the upper part of the equipment cabinet 1. The upper parts of the column 6 and the plurality of guide shafts 7 are commonly connected to the top plate 8. The hydraulic cylinder 4 is installed on the top plate 8. The telescopic end of the hydraulic cylinder 4 extends to the bottom of the top plate 8 and is connected to the lifting seat 5. The upper mold device 3 is located at the bottom of the top plate 8. It is located just above the lower mold device 2 and is installed at the bottom of the lifting seat 5. The lower mold device 2 and the upper mold device 3 are respectively equipped with an electric heating body 1 23 and an electric heating body 2 32, and correspondingly set with a plurality of molding grooves 22 and a plurality of molding protrusions 34. When the acrylic convex lens 9 is heated and shaped, the material for making the acrylic convex lens 9 is placed between the lower mold device 2 and the upper mold device 3, and then a layer of silicone protective film 10 is laid on the material. The hydraulic cylinder 4 pushes the upper mold device 3 downward to close the mold of the upper mold device 3 and the lower mold device 2. After closing the mold, as shown in the attached figure, Figure 6 As shown, that is to say, the upper and lower molds are heated, and the surfaces of the upper and lower molds are provided with a number of matching concave and convex grooves, and then the product is placed on it, and then a silicone film is provided on the upper part of the product for protection, the purpose of which is to prevent the upper mold from rubbing against the product when pressing down, thereby reducing the loss of the product. The product is parallel when it is just put on, and the product is deformed by high temperature and gravity when the upper and lower molds are closed. When the molds are closed, it is heated three times, the first time at 80 degrees, the second time at 120 degrees, and the third time at 60 degrees, for 2 minutes, and then the mold is opened, and the product is quickly shaped by air cooling.

[0026] In addition, the lower mold device 2 includes a lower mold base 21, a molding groove 22 is arranged on the upper part of the lower mold base 21, and an electric heating body 23 is embedded in the interior of the lower mold base 21 (used to heat the lower mold device to achieve the temperature conditions required for material molding. This embedded design is conducive to uniform heat distribution and temperature control), and the bottom end of the lower mold base 21 is connected to a lower heat insulation board 24 (which plays a heat insulation role, prevents heat from being transferred downward, improves energy utilization efficiency and protects the base of the equipment); the upper mold device 3 includes an upper mold base 31, and an electric heating body 2 32 is embedded in the interior of the upper mold base 31 (providing a heating function for the upper mold device to ensure that the required molding temperature is reached synchronously with the lower mold device). The forming protrusion 34 is arranged at the lower part of the upper mold base 31, and the top of the upper mold base 31 is connected to the upper insulation board 33 (corresponding to the lower insulation board 24, which plays a role of insulation and protection). The interior of the lower mold base 21 and the interior of the upper mold base 31 are both reserved with a cavity 35, and the electric heating body 1 23 and the electric heating body 2 32 are fixed inside the cavity 35. The sides of the lower mold base 21 and the upper mold base 31 are both reserved with reserved holes 36 connected to the cavity 35 (these reserved holes may be used for wire access, temperature sensor installation or other maintenance purposes to ensure the normal operation and monitoring of the heating system). The forming groove 22 and the forming protrusion 34 are both spherical structures, and the two are adapted to each other.

Claims

1. A heating and shaping mechanism for upper and lower molds of acrylic convex lenses, comprising an equipment cabinet (1), characterized in that: Also includes: A lower mold device (2), the lower mold device (2) is installed on the upper part of the equipment cabinet (1), a plurality of molding grooves (22) are reserved on the upper part of the lower mold device (2), and an electric heating body (23) is installed inside; An upper mold device (3), the upper mold device (3) is located directly above the equipment cabinet (1), a plurality of molding protrusions (34) are reserved at the lower portion of the upper mold device (3), and an electric heating body (32) is installed inside the upper mold device (3); A hydraulic cylinder (4) is provided, wherein the hydraulic cylinder (4) can drive the upper mold device (3) to move up and down.

2. The upper and lower mold heating and shaping mechanism for acrylic convex lens according to claim 1, characterized in that: Columns (6) are installed on the upper part of the equipment cabinet (1) and on both sides of the lower mold device (2), a top plate (8) is installed on the upper part of the columns (6), and the hydraulic cylinder (4) is installed on the upper part of the top plate (8).

3. The upper and lower mold heating and shaping mechanism for acrylic convex lens according to claim 1, characterized in that: A plurality of guide shafts (7) are installed between the equipment cabinet (1) and the top plate (8); the outside of the guide shafts (7) is slidably connected to a lifting seat (5); and the upper mold device (3) is installed at the bottom of the lifting seat (5).

4. The upper and lower mold heating and shaping mechanism for acrylic convex lens according to claim 1, characterized in that: The lower mold device (2) includes a lower mold base (21), the molding groove (22) is arranged on the upper part of the lower mold base (21), the electric heating body (23) is embedded in the interior of the lower mold base (21), and the bottom end of the lower mold base (21) is connected to a lower heat insulation board (24).

5. The upper and lower mold heating and shaping mechanism for acrylic convex lens according to claim 4, characterized in that: The upper mold device (3) includes an upper mold base (31), the second electric heating body (32) is embedded in the interior of the upper mold base (31), the forming protrusion (34) is arranged at the lower part of the upper mold base (31), and the top end of the upper mold base (31) is connected to an upper heat insulation board (33).

6. The upper and lower mold heating and shaping mechanism for acrylic convex lens according to claim 5, characterized in that: A cavity (35) is reserved inside the lower die base (21) and the upper die base (31), and the electric heating body 1 (23) and the electric heating body 2 (32) are fixed inside the cavity (35). The sides of the lower die base (21) and the upper die base (31) are reserved with a reserved hole (36) connected to the cavity (35).

7. The upper and lower mold heating and shaping mechanism for acrylic convex lens according to claim 1, characterized in that: The forming groove (22) and the forming protrusion (34) are both spherical structures, and the two are adapted to each other.

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