Lens ejection mechanism

Abstract

The utility model discloses a lens ejection mechanism which is obliquely arranged in an injection mold, the ejection mechanism comprises a power assembly, an ejection rod and an ejection table, the ejection rod is arranged on the power assembly, the ejection table is arranged at one end, far away from the power assembly, of the ejection rod, a through hole is formed in the bottom end of a cavity of the injection mold, and the ejection rod is arranged in the through hole. The ejection table is located at the through hole; an abutting plate and a sliding plate are arranged in the injection mold, the abutting plate is obliquely arranged and parallel to the ejection rod, the abutting plate is located on one side of the ejection table, a lens located on the ejection table abuts against the abutting plate, and the top end of the sliding plate is connected with the top end of the abutting plate. And the lens on the ejection table slides onto the sliding plate and slides out of the injection mold. The ejection mechanism disclosed by the utility model has the advantages that after the ejection mechanism ejects and lifts the lens from the cavity, the lens can automatically slide and be discharged from the injection mold along the surface of the sliding plate, so that the discharging of the lens is convenient.

Description

Technical Field

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[0001] The utility model relates to the technical field of lens production molds, and particularly relates to a lens ejection mechanism. Background Art

[0002] Lenses are usually produced by injection molding. After the lenses are injection molded in the injection mold, they need to be taken out. It is very inconvenient to take out the lenses from the injection mold manually. It is easy to pollute the surface of the lenses, and the temperature of the lenses during injection molding is relatively high. Taking out the lenses manually is likely to cause hand burns.

[0003] In the existing lens injection molds, an ejection mechanism is provided. After the lenses in the cavity are ejected by the ejection mechanism, they are taken out. Since the cavity is usually located at the center position inside the injection mold and is far from the outside of the mold, it is still very inconvenient to take out the ejected lenses, and improvements need to be made. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a lens ejection mechanism that can automatically discharge the lenses in the cavity from the injection mold after the lenses in the cavity are ejected.

[0005] The utility model provides a lens ejection mechanism. The ejection mechanism is inclined and arranged in the injection mold. The ejection mechanism includes a power component, an ejection rod and an ejection table. The ejection rod is arranged on the power component. The ejection table is arranged at one end of the ejection rod far from the power component. A through hole is opened at the bottom end of the cavity of the injection mold. The ejection table is located at the through hole. An abutting plate and a sliding plate are arranged in the injection mold. The abutting plate is inclined and parallel to the ejection rod. The abutting plate is located on one side of the ejection table. The lens on the ejection table abuts against the abutting plate. The top end of the sliding plate is connected to the top end of the abutting plate. The lens on the ejection table slides onto the sliding plate and slides out of the injection mold.

[0006] Preferably, baffles are vertically arranged on both sides of the sliding plate, and the height dimension of the baffles is greater than the thickness dimension of the lens.

[0007] Preferably, the inclination angle between the abutting plate and the vertical plane is set to "A", and 30 degrees < A < 45 degrees is satisfied.

[0008] Preferably, the included angle between the abutting plate and the sliding plate is set to "C", and C = 90 degrees is satisfied.

[0009] Preferably, both the abutting plate and the sliding plate are made of aluminum material.

[0010] Preferably, protective films are arranged on the surfaces of both the abutting plate and the sliding plate.

[0011] Preferably, a screw hole is formed at the bottom end of the ejection platform, and a screw is provided at one end of the ejection rod away from the power assembly, and the screw is threadedly connected in the screw hole.

[0012] Preferably, the power assembly is configured as a cylinder, the telescopic rod of the cylinder is kept tilted, and one end of the ejection rod is fixed to the telescopic rod of the cylinder.

[0013] From the above description of the utility model, it can be seen that the utility model has the following beneficial effects:

[0014] 1. The ejection mechanism of the lens is tilted. After the lens is injection molded in the cavity, the ejection mechanism ejects the lens from the cavity and lifts it up. The lens can automatically slide out of the injection mold along the surface of the sliding plate, thereby facilitating the removal of the lens from the injection mold.

[0015] 2. A protective film is provided on the surface of the abutment plate and the sliding plate. The setting of the protective film protects the lens and prevents the lens from being worn during the sliding process.

[0016] 3. A screw hole is formed at the bottom end of the ejector platform, and a screw is provided at the end of the ejector rod away from the power assembly. According to the lens to be processed and formed, the ejector platform corresponding to the cavity through hole is selected and threadedly connected to the screw for installation, which can adapt to the ejection of different types of lenses after molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 1 is a schematic structural diagram of an embodiment mold;

[0018] Figure 2 is a schematic structural diagram of a through hole in an embodiment;

[0019] Figure 3 This is a structural schematic diagram of a lens ejection mechanism according to an embodiment;

[0020] Figure 4 1 is a schematic structural diagram of an ejector rod and a screw rod in an embodiment;

[0021] Figure 5 2. It is a structural schematic diagram of the ejection platform and screw hole in the embodiment;

[0022] Figure 6 2. It is a schematic structural diagram of the abutment plate, the sliding plate and the baffle plate of the embodiment;

[0023] Figure 7 This is an embodiment Figure 6 A partial enlarged view of point A in the middle.

[0024] Figure numerals: 1, injection mold; 11, cavity; 12, through hole; 2, power assembly; 3, ejector rod; 31, screw; 4, ejector platform; 41, screw hole; 5, abutment plate; 51, protective film; 6, sliding plate; 7, baffle. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figure 1-7 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] Reference Figure 1 、 Figure 2 and Figure 3 A lens ejection mechanism is provided, which is tiltedly arranged in an injection mold 1 and has a through hole 12 formed at the bottom end of the cavity 11 of the injection mold 1. The ejection mechanism includes a power assembly 2, an ejector rod 3, an ejector platform 4, an abutment plate 5, and a sliding plate 6. The power assembly 2 is provided as a cylinder, which is tiltedly arranged. One end of the ejector rod 3 is fixed to the telescopic rod of the cylinder and is coaxially arranged with the telescopic rod of the cylinder. The ejector platform 4 is fixed to the other end of the ejector rod 3 and is embedded in the through hole 12 of the cavity 11 of the injection mold 1. The lens is injection molded in the cavity 11 of the injection mold 1.

[0027] Reference Figure 3 、 Figure 4 and Figure 5 According to the needs of the required molded lens model, in order to make the ejection mechanism match the model of the through hole 12 of the cavity 11 of the injection mold 1, the ejection platform 4 and the ejection rod 3 are detachably fixed. To this end, a screw 31 is coaxially fixedly provided at the top of the ejection rod 3, and a corresponding screw hole 41 is formed at the bottom of the ejection platform 4. The model of the screw hole 41 corresponds to the model of the screw 31. The ejection platform 4 corresponding to the model of the through hole 12 of the cavity 11 is selected, and the screw 31 at the top of the ejection rod 3 is threadedly connected and fixed in the screw hole 41. This not only ensures that the ejection platform 4 and the ejection rod 3 are firmly fixed, but also has the advantage of easy disassembly.

[0028] The abutting plate 5 is fixedly arranged in the injection mold 1, making the abutting plate 5 parallel to the ejector rod 3, and ensuring that the abutting plate 5 is located on one side of the cavity 11 of the injection mold 1, so that the cavity 11 of the injection mold 1 is located obliquely above the abutting plate 5. When the telescopic rod of the cylinder extends to drive the ejecting platform 4 to rise through the ejector rod 3, the ejecting platform 4 ejects the lens from the cavity 11. Subsequently, one side of the lens abuts against the abutting plate 5. The setting of the abutting plate 5 prevents the lens from slipping off the ejecting platform 4 after being ejected. As the cylinder drives the ejecting platform 4 to rise, the lens on the ejecting platform 4 moves obliquely upward along the surface of the abutting platform. To facilitate the discharging of the lens on the ejecting platform 4 from the injection mold 1, since the abutting plate 5 is parallel to both the telescopic rod of the cylinder and the ejector rod 3, the inclination angle between the abutting plate 5 and the vertical plane is set as "A", and the inclination angle between the abutting plate 5 and the vertical plane satisfies 30° < A < 45°. This makes the abutting plate 5 maintain a suitable inclination angle.

[0029] The sliding plate 6 is arranged obliquely, and one end of the sliding plate 6 is fixedly connected to the top end of the abutting plate 5. The other end of the sliding plate 6 is located outside the injection mold 1. The set width dimension of the sliding plate 6 is larger than the width dimension of the lens. The included angle between the sliding plate 6 and the abutting plate 5 is set as "C", and the included angle "C" between the sliding plate 6 and the abutting plate 5 is set to 90°. Since the ejecting platform 4 and the abutting plate 5 are perpendicular to each other, the sliding plate 6 and the ejecting platform 4 are parallel to each other. After the cylinder drives the ejecting platform 4 to rise, the lens on the ejecting platform 4 slides upward along the surface of the abutting plate 5 until the ejecting platform 4 slides to the top end of the abutting plate 5, making the surface of the ejecting platform 4 flush with the surface of the sliding plate. Subsequently, the lens on the ejecting platform 4 slides onto the sliding plate 6 under the action of gravity, and the lens slides out of the injection mold 1 along the surface of the sliding plate 6. Both the abutting plate 5 and the sliding plate 6 are made of aluminum material. The aluminum material has good processing performance, with the advantages of low density and high strength. The surfaces of the abutting plate 5 and the sliding plate 6 made of aluminum material are smooth, which can reduce the loss of the lens during the sliding process.

[0030] Refer to Figure 6 and Figure 7In order to prevent the lens from sliding off the side of the sliding plate 6 and to enable the lens to slide smoothly out of the injection mold 1 on the sliding plate 6, baffles 7 are vertically provided on both sides of the sliding plate 6, and the height of the baffles 7 is greater than the thickness of the lens. The provision of the baffles 7 serves as a barrier and protection for both sides of the lens. When the lens abuts against the abutment plate 5 and slides upward along it, and slides out of the injection mold 1 on the surface of the sliding plate 6, in order to further prevent the lens from being damaged during the sliding process, a protective film 51 is provided on the surface of the abutment plate 5 and the surface of the sliding plate 6 to prevent the lens from directly contacting the abutment plate 5 or the sliding plate 6. The provision of the protective film 51 thus provides a protective effect on the sliding of the lens.

[0031] The specific implementation principle of the embodiment of the present application is: according to the model of the lens to be injected, the corresponding injection cavity 11 is replaced in the injection mold 1, the ejection platform 4 corresponding to the through hole 12 of the cavity 11 is selected, and the screw 31 at the top of the ejection rod 3 is threadedly connected to the screw hole 41 at the bottom of the ejection platform 4, so that the ejection platform 4 and the ejection rod 3 are threadedly connected and fixed, and the ejection platform 4 is embedded in the through hole 12 of the cavity 11.

[0032] As the lens in the cavity 11 is injection molded, the telescopic rod of the cylinder extends to drive the ejector plate 4 to rise. One side of the lens on the ejector plate 4 abuts against the abutment plate 5, and under the action of the cylinder, it rises diagonally upward along the abutment plate 5. Until the ejector plate 4 rises to the top of the abutment plate 5 and is flush with the surface of the sliding plate 6. The lens on the ejector plate 4 slides onto the sliding plate 6, so that the lens slides out of the injection mold 1 through the sliding plate 6. The power component 2, ejector rod 3, ejector plate 4 and abutment plate 5 of the lens ejection mechanism are all tilted, and a sliding plate 6 is provided to match the abutment plate 5, thereby facilitating the discharge of the lens from the injection mold 1.

[0033] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all protected by the present invention.

Claims

1. A lens ejection mechanism, characterized in that: The ejecting mechanism is inclined and arranged in the injection mold. The ejecting mechanism includes a power component, an ejecting rod, and an ejecting platform. The ejecting rod is arranged on the power component, and the ejecting platform is arranged at one end of the ejecting rod away from the power component. A through hole is formed at the bottom end of the cavity of the injection mold, and the ejecting platform is located at the through hole. An abutting plate and a sliding plate are arranged in the injection mold. The abutting plate is inclined and parallel to the ejecting rod. The abutting plate is located on one side of the ejecting platform. The lens located on the ejecting platform abuts against the abutting plate. The top end of the sliding plate is connected to the top end of the abutting plate. The lens on the ejecting platform slides onto the sliding plate and slides out of the injection mold.

2. The lens ejection mechanism according to claim 1, characterized in that: Baffles are vertically arranged on both sides of the sliding plate, and the height dimension of the baffles is greater than the thickness dimension of the lens.

3. The lens ejection mechanism according to claim 1, characterized in that: The inclination angle between the abutting plate and the vertical plane is set to "A", and 30 degrees < A < 45 degrees is satisfied.

4. The lens ejection mechanism according to claim 1, characterized in that: The included angle between the abutting plate and the sliding plate is set to "C", and C = 90 degrees is satisfied.

5. The lens ejection mechanism according to claim 1, characterized in that: Both the abutting plate and the sliding plate are made of aluminum material.

6. The lens ejection mechanism according to claim 1, characterized in that: Protective films are arranged on the surfaces of both the abutting plate and the sliding plate.

7. The lens ejection mechanism according to claim 1, characterized in that: A screw hole is formed at the bottom end of the ejecting platform. A screw rod is arranged at one end of the ejecting rod away from the power component, and the screw rod is threadedly connected in the screw hole.

8. The lens ejection mechanism according to claim 1, characterized in that: The power component is set as a cylinder. The telescopic rod of the cylinder is kept inclined, and one end of the ejecting rod is fixed to the telescopic rod of the cylinder.

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