Optical glass casting mold convenient to demold

Abstract

The utility model provides an optical glass casting mould convenient to demould, which comprises a base, the top of the base is fixedly connected with a lower mould, the top of the lower mould is provided with a mould cavity, the bottom of the lower mould is provided with an accommodating cavity, and the inner cavity of the accommodating cavity is provided with a connecting plate moving along the vertical direction. Ejector rods are vertically and fixedly connected to the four corners of the upper surface of the connecting plate, and the top ends of the ejector rods extend to the bottom of the inner wall of the mold cavity in a drawing mode. According to the optical glass casting mold convenient to demold, after casting and cooling of optical glass are completed, air flow injection grooves can descend in the blocking plates, shielding of the flow dividing channels is opened, and after air flow is injected into the flow dividing cavity through external low-pressure air injection equipment, the two flow dividing channels conduct flow dividing; and low-pressure airflow is injected into the plugging plate, so that the low-pressure airflow flows between the optical glass and the inner wall surface of the mold cavity for auxiliary demolding.

Description

Technical Field

[0001] This utility model relates to the field of casting mold technology, and in particular to an optical glass casting mold that is easy to demold. Background Technology

[0002] Optical glass is a special type of glass used in the manufacture of optical instruments, lenses, windows, and other optical components. In the production process, mixed raw materials are melted in a high-temperature furnace. While molten, the glass is poured directly into a cooled metal casing. After the glass cools and solidifies, the metal casing is then peeled off.

[0003] Chinese patent CN221971452U discloses an optical glass casting mold that facilitates demolding. This technical solution uses a servo motor to drive a rotating shaft to rotate. By using the meshing transmission of an active bevel gear and a driven bevel gear, two adjusting screws can be driven to rotate simultaneously. Through the interaction between the adjusting screws and the threaded sliding sleeve, the casting mold base can slide up and down along the limiting through groove. Through the sliding engagement of the limiting top tube with the limiting post, and the contact between the docking groove and the support ring, the base can support the limiting top tube, thereby realizing the pushing process of the four support heads on the optical glass plate and completing its demolding process.

[0004] However, this easy-to-demold optical glass casting mold uses a rigid ejection method. When the optical glass is tightly bonded to the metal shell, ejection requires a large force, which can easily damage the surface of the optical glass, thereby reducing the quality of the finished optical glass and making it unsuitable for use in optical glass production.

[0005] Therefore, it is necessary to provide a new optical glass casting mold that is easy to demold to solve the above-mentioned technical problems. Summary of the Invention

[0006] This utility model provides an optical glass casting mold that is easy to demold. The technical problem it solves is that when using a rigid ejection method, the optical glass is tightly bonded to the metal shell, and the ejection requires a large force.

[0007] To solve the above-mentioned technical problems, the present invention provides an optical glass casting mold that is easy to demold, including a base, a lower mold fixedly connected to the top of the base, a mold cavity opened at the top of the lower mold, and a receiving cavity opened at the bottom of the lower mold;

[0008] The inner cavity of the receiving cavity is provided with a connecting plate that moves in a vertical direction. Ejector rods are vertically fixed to the four corners of the upper surface of the connecting plate. The top of the ejector rods is pulled out and extended to the bottom of the inner wall of the mold cavity. Airflow injection grooves are provided at both ends of the bottom of the inner wall of the mold cavity. A sealing plate that moves in a vertical direction is provided inside the airflow injection groove.

[0009] The lower mold has a flow-dividing cavity inside, and both ends of the inner wall of the flow-dividing cavity are connected to several flow-dividing channels. The other end of each of the multiple flow-dividing channels is connected to the upper part of the inner wall of the airflow injection groove at the same end.

[0010] Preferably, an electric telescopic rod is vertically fixedly connected to the inner cavity of the base, and the top end of the electric telescopic rod extends movably into the inner cavity of the receiving cavity and is fixedly connected to the lower surface of the connecting plate.

[0011] Preferably, a motor is fixedly connected to both ends of the top of the cavity, a gear is fixedly connected to the output shaft of the motor, and a rack plate is vertically fixedly connected to the bottom of the sealing plate, which meshes with the surface of the gear at the same end. The rack plate is slidably connected to the inner wall of the cavity.

[0012] Preferably, the lower mold has a cooling water cavity inside, one end of the front side of the lower mold is provided with a water injection pipe communicating with the inner cavity of the cooling water cavity, and the other end of the rear side of the lower mold is provided with a drain pipe communicating with the cooling water cavity.

[0013] Preferably, the side wall of the lower mold is provided with an air injection pipe that communicates with the inner cavity of the flow divider, and the other end of the air injection pipe is provided with a connecting joint.

[0014] Preferably, the top of the lower mold is fixedly connected with several positioning rods, the side wall of the base is fixedly connected with several mounting seats, and the bottom of the inner wall of the mold cavity is provided with an opening that matches the ejector rod.

[0015] Preferably, the surface of the base is provided with an inspection cover plate that can be removed by a number of bolts.

[0016] Compared with related technologies, the optical glass casting mold that facilitates demolding provided by this utility model has the following beneficial effects:

[0017] This invention provides an optical glass casting mold that facilitates demolding. After the optical glass is cast and cooled, it can be lowered inside the sealing plate through an air injection groove, opening the shielding of the diversion channel. After air is injected into the diversion cavity through an external low-pressure air injection device, the two diversion channels split, injecting low-pressure air into the interior of the sealing plate respectively. This low-pressure air flows between the optical glass and the inner wall of the mold cavity to assist in demolding. Then, after the connecting plate rises, it drives multiple ejector rods to eject the optical glass. The ejection force on the optical glass is small, which improves the protection of the optical glass and avoids damage to the surface of the optical glass caused by a large ejection force. This improves the quality of the finished optical glass and is beneficial to the production, processing and use of optical glass. Attached Figure Description

[0018] Figure 1 A schematic diagram of a preferred embodiment of the optical glass casting mold for easy demolding provided by this utility model;

[0019] Figure 2 for Figure 1 The diagram shows a top view of the structure.

[0020] Figure 3 for Figure 1 The diagram shows the structure of the bolts and the inspection cover plate.

[0021] Figure 4 for Figure 1 The diagram shows a frontal cross-sectional view of the structure.

[0022] The following are the labels in the diagram: 1. Base; 2. Electric telescopic rod; 3. Lower mold; 4. Receiving cavity; 5. Connecting plate; 6. Opening; 7. Ejector rod; 8. Mold cavity; 9. Air injection groove; 10. Sealing plate; 11. Diverting cavity; 12. Air injection pipe; 13. Diverting channel; 14. Motor; 15. Gear; 16. Rack plate; 17. Connecting joint; 18. Water injection pipe; 19. Drain pipe; 20. Positioning rod; 21. Bolt; 22. Inspection cover plate; 23. Mounting seat; 24. Cooling water cavity. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in, Figure 1 A schematic diagram of a preferred embodiment of the optical glass casting mold for easy demolding provided by this utility model; Figure 2 for Figure 1 The diagram shows a top view of the structure. Figure 3 for Figure 1 The diagram shows the structure of the bolts and the inspection cover plate. Figure 4 for Figure 1 The diagram shows a front sectional view of the structure. The optical glass casting mold for easy demolding includes a base 1, a lower mold 3 fixedly connected to the top of the base 1, a mold cavity 8 opened at the top of the lower mold 3, and a receiving cavity 4 opened at the bottom of the lower mold 3.

[0025] The inner cavity of the receiving cavity 4 is provided with a connecting plate 5 that moves vertically. The four corners of the upper surface of the connecting plate 5 are vertically fixed with ejector rods 7. The top of the ejector rods 7 is pulled out and extended to the bottom of the inner wall of the mold cavity 8. Both ends of the bottom of the inner wall of the mold cavity 8 are provided with airflow injection grooves 9. The interior of the airflow injection grooves 9 is provided with a sealing plate 10 that moves vertically.

[0026] The lower mold 3 has a flow-dividing cavity 11 inside. Both ends of the inner wall of the flow-dividing cavity 11 are connected to several flow-dividing channels 13. The other ends of the multiple flow-dividing channels 13 are connected to the upper part of the inner wall of the airflow injection groove 9 at the same end.

[0027] After the optical glass is cast and cooled, it can be lowered inside the sealing plate 10 through the air injection groove 9 to open the shield of the diversion channel 13. After the air is injected into the diversion cavity 11 through the external low-pressure air injection device, the two diversion channels 13 split and inject low-pressure air into the interior of the sealing plate 10 respectively, so that the low-pressure air flows between the optical glass and the inner wall of the mold cavity 8 to assist in demolding.

[0028] After the connecting plate 5 rises, it drives multiple ejector rods 7 to eject the optical glass. With the assistance of low-pressure airflow, the ejection force on the optical glass is small, which improves the protection of the optical glass and avoids damage to the surface of the optical glass caused by a large ejection force. This improves the quality of the finished optical glass and is beneficial to the production, processing and use of optical glass.

[0029] An electric telescopic rod 2 is vertically fixedly connected to the inner cavity of the base 1. The top end of the electric telescopic rod 2 extends movably into the inner cavity of the receiving cavity 4 and is fixedly connected to the lower surface of the connecting plate 5. After the electric telescopic rod 2 extends or retracts, it can drive the connecting plate 5 to rise or fall.

[0030] Motors 14 are fixedly connected to both ends of the top of the cavity 4. Gears 15 are fixedly connected to the output shaft of the motors 14. A rack plate 16 that meshes with the surface of the gear 15 at the same end is vertically fixedly connected to the bottom of the sealing plate 10. The rack plate 16 is slidably connected to the inner wall of the cavity 4.

[0031] After the motor 14 starts working, it can drive the gear 15 to rotate. By using the meshing of the rack plate 16, the sealing plate 10 can be driven to move up and down inside the airflow injection groove 9. When the airflow injection groove 9 moves to the lower part, it seals the opening at the bottom of the sealing plate 10 and opens the diversion channel 13.

[0032] The lower mold 3 has a cooling water cavity 24 inside. One end of the front side of the lower mold 3 is provided with a water injection pipe 18 that communicates with the inner cavity of the cooling water cavity 24, and the other end of the rear side of the lower mold 3 is provided with a drain pipe 19 that communicates with the cooling water cavity 24.

[0033] The side wall of the lower mold 3 is provided with an air injection pipe 12 that communicates with the inner cavity of the flow divider 11, and the other end of the air injection pipe 12 is provided with a connecting joint 17.

[0034] The connecting joint 17 facilitates the connection between the external low-pressure air injection equipment and the air injection pipe 12, making it easy to inject low-pressure airflow into the mold cavity 8.

[0035] The top of the lower mold 3 is fixedly connected with several positioning rods 20, the side wall of the base 1 is fixedly connected with several mounting seats 23, the bottom of the inner wall of the mold cavity 8 is provided with an opening 6 that matches the ejector rod 7, and the surface of the base 1 is disassembled and provided with a maintenance cover plate 22 by several bolts 21.

[0036] The working principle of the easy-to-demold optical glass casting mold provided by this utility model is as follows:

[0037] After the optical glass is cast and cooled, it can be lowered inside the sealing plate 10 through the air injection groove 9 to open the shield of the diversion channel 13. After the air is injected into the diversion cavity 11 through the external low-pressure air injection device, the two diversion channels 13 split and inject low-pressure air into the interior of the sealing plate 10 respectively. The low-pressure air flows between the optical glass and the inner wall of the mold cavity 8 to assist in demolding. Then, after the connecting plate 5 rises, it drives multiple ejector rods 7 to eject the optical glass.

[0038] Compared with related technologies, the optical glass casting mold that facilitates demolding provided by this utility model has the following beneficial effects:

[0039] This invention provides an optical glass casting mold that facilitates demolding. After the optical glass is cast and cooled, it can be lowered inside the sealing plate 10 through the air injection groove 9, opening the shield of the diversion channel 13. After air is injected into the diversion cavity 11 through an external low-pressure air injection device, the two diversion channels 13 split, injecting low-pressure air into the interior of the sealing plate 10 respectively. The low-pressure air flows between the optical glass and the inner wall of the mold cavity 8 to assist demolding. Then, after the connecting plate 5 rises, it drives multiple ejector rods 7 to eject the optical glass. The ejection force on the optical glass is small, which improves the protection of the optical glass and avoids damage to the surface of the optical glass caused by a large ejection force. This improves the quality of the finished optical glass and is beneficial to the production, processing and use of optical glass.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An optical glass casting mold for easy demolding, comprising a base (1), characterized in that, The base (1) is fixedly connected to the top of the lower mold (3), the top of the lower mold (3) is provided with a mold cavity (8), and the bottom of the lower mold (3) is provided with a receiving cavity (4). The inner cavity of the receiving cavity (4) is provided with a connecting plate (5) that moves in the vertical direction. The four corners of the upper surface of the connecting plate (5) are vertically fixed with ejector rods (7). The top of the ejector rods (7) is pulled out and extended to the bottom of the inner wall of the mold cavity (8). Both ends of the bottom of the inner wall of the mold cavity (8) are provided with airflow injection grooves (9). The interior of the airflow injection grooves (9) is provided with a sealing plate (10) that moves in the vertical direction. The lower mold (3) has a flow-dividing cavity (11) inside. Both ends of the inner wall of the flow-dividing cavity (11) are connected to several flow-dividing channels (13). The other end of the multiple flow-dividing channels (13) is connected to the upper part of the inner wall of the airflow injection groove (9) at the same end.

2. The optical glass casting mold for easy demolding according to claim 1, characterized in that, An electric telescopic rod (2) is vertically fixedly connected to the inner cavity of the base (1). The top end of the electric telescopic rod (2) extends movably into the inner cavity of the receiving cavity (4) and is fixedly connected to the lower surface of the connecting plate (5).

3. The optical glass casting mold for easy demolding according to claim 1, characterized in that, Both ends of the top of the cavity (4) are fixedly connected to a motor (14), the output shaft of the motor (14) is fixedly connected to a gear (15), and the bottom of the sealing plate (10) is vertically fixedly connected to a rack plate (16) that meshes with the surface of the gear (15) at the same end. The rack plate (16) is slidably connected to the inner wall of the cavity (4).

4. The optical glass casting mold for easy demolding according to claim 1, characterized in that, The lower mold (3) has a cooling water cavity (24) inside. One end of the front side of the lower mold (3) is provided with a water injection pipe (18) that communicates with the inner cavity of the cooling water cavity (24). The other end of the rear side of the lower mold (3) is provided with a drain pipe (19) that communicates with the cooling water cavity (24).

5. The optical glass casting mold for easy demolding according to claim 1, characterized in that, The side wall of the lower mold (3) is provided with an air injection pipe (12) that communicates with the inner cavity of the flow divider (11), and the other end of the air injection pipe (12) is provided with a connecting joint (17).

6. The optical glass casting mold for easy demolding according to claim 1, characterized in that, The top of the lower mold (3) is fixedly connected with several positioning rods (20), the side wall of the base (1) is fixedly connected with several mounting seats (23), and the bottom of the inner wall of the mold cavity (8) is provided with an opening (6) that is compatible with the ejector rod (7).

7. The optical glass casting mold for easy demolding according to claim 1, characterized in that, The surface of the base (1) is fitted with an inspection cover (22) by means of several bolts (21).

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