Device for eliminating eccentricity and deviation of molded lens
By designing the positioning mechanism and rotating platform composed of demagnetized materials, the eccentric and flesh-biased problem caused by the shaking of the preformed balls in the molded lens processing is solved, and high-precision mold positioning and improvement of finished product quality is achieved.
Patent Information
- Application Number
- CN202422445817.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-10
AI Technical Summary
During the processing of molded lenses, due to the shaking of preformed balls in the mold, the finished product has eccentric and flesh-like phenomena, which is difficult to effectively solve in the prior art.
A device for eliminating the eccentricity of the molded lens is designed, and a positioning mechanism, a rotating platform, a standby platform and an input platform composed of demagnetized materials and weak magnetic materials are designed to prevent the preformed ball from shaking during the movement of the mold.
It effectively eliminates the eccentric and flesh-biased phenomenon of molded lenses, improves processing accuracy and finished product quality, reduces friction and wear, and enhances the flexibility and processing efficiency of the equipment.
Smart Images
Figure CN223255113U_ABST
Abstract
Description
Technical field
[0002] The utility model relates to the technical field of lens manufacturing, in particular to a device for eliminating eccentricity and fatness of molded lenses. [Background Technology]
[0004] When manufacturing lenses, the glass preform is first placed between the upper mold and the lower mold, and then the glass preform is heated. When the glass preform reaches a certain temperature, the servo motor is used to apply force to push the upper and lower molds, squeezing the preform into the desired glass lens shape. After the mold is assembled with the preform ball on the positioning device, before entering the next process, the parts in contact with the mold are magnetic. When the mold moves, the magnetic parts attract the mold, causing the mold to feel sticky when pushed, causing the preform ball in the mold to shake. After the ball shakes and shifts, hot pressing will make the finished product appear eccentric and fleshy. [Utility Model Content]
[0006] In order to overcome the problem of the preformed ball in the mold shaking before entering the next process, which causes the finished product to be eccentric and fleshy, the technical problem to be solved by the present invention is to provide a device to eliminate the eccentricity and fleshiness of the molded lens. The present invention is achieved by the following technical solutions:
[0007] A device for eliminating eccentricity and fatness of molded lenses, comprising a first conveying mechanism for conveying the mold in a first direction, a positioning mechanism provided on the first conveying mechanism for positioning the mold to take the lens out of the mold or place a preform ball in it, a standby platform provided at one end of the first conveying mechanism for waiting to enter the next processing stage, an input platform provided at one end of the standby platform for loading the mold into the next process, the input platform connected to a second conveying mechanism for conveying the input platform into the next process in a second direction, the positioning mechanism, the standby platform and the input platform are composed of demagnetizing components or weak magnetic components to prevent the preform ball of the mold from shaking when the positioning mechanism moves to the standby platform and moves to the input platform.
[0008] As described above, a device for eliminating eccentricity and fatness of molded lenses, the positioning mechanism includes a rotating mechanism for positioning the mold when it is placed, a first positioning mechanism for limiting the displacement of the mold is provided on one side of the rotating mechanism, and a second positioning mechanism is provided on the side of the rotating mechanism away from the first positioning mechanism to jointly limit the displacement of the mold together with the first positioning mechanism.
[0009] In the device for eliminating the eccentricity and fatness of molded lenses as described above, the rotating mechanism includes a rotating platform for rotating the mold to a specific position, and a rotating transition platform plate is provided on the periphery of the rotating platform for reinforcing and supporting the mold.
[0010] In the device for eliminating decentration and looseness of molded lenses as described above, the first positioning mechanism includes a first positioning arm capable of contacting the mold, and the first positioning arm is connected to a first cylinder that pushes the first positioning arm to move.
[0011] In the device for eliminating decentration and looseness of molded lenses as described above, the second positioning mechanism includes a second positioning arm capable of contacting the mold, and the second positioning arm is connected to a second cylinder that pushes the second positioning arm to move.
[0012] As described above, a device for eliminating eccentricity and fatness of molded lenses, the first positioning arm is provided with a first pulley and a second pulley, the first pulley and the second pulley can rotate around their own central axes, the second positioning arm is provided with a third pulley and a fourth pulley, the third pulley and the fourth pulley can rotate around their own central axes, the first pulley and the second pulley, the third pulley and the fourth pulley jointly clamp the positioning mold and enable the mold to rotate when clamped.
[0013] As described above, a device for eliminating eccentricity and fatness of molded lenses, the first conveying mechanism includes a guide rail for moving a transport positioning mechanism, the guide rail is connected to a first motor that drives the guide rail to move, one side of the guide rail is provided with an auxiliary pushing mechanism that pushes the mold placed on the rotating platform to the standby platform and then to the input platform after the input platform is in place, the auxiliary pushing mechanism includes a pushing guide rail for moving in a first direction, a pushing bracket sliding on the pushing guide rail is provided above the pushing guide rail, the pushing bracket is connected to a conveyor belt, the conveyor belt is connected to a second motor, and under the drive of the second motor, the conveyor belt starts to move and drives the pushing bracket, the pushing bracket is connected to a third cylinder, and the third cylinder is connected to a pushing arm that can push the mold in the first direction and the second direction.
[0014] As described above, a device for eliminating eccentricity and fatness of molded lenses, the input platform includes an input platform plate of the same height as the standby platform, the input platform plate is connected to a support frame for supporting the input platform plate, and the support frame is connected to a second conveying mechanism that allows the input platform to slide in a second direction.
[0015] In the device for eliminating decentration and looseness of molded lenses as described above, the second conveying mechanism includes a third guide rail for connecting to the support frame so that the input platform slides in the second direction, and the third guide rail is connected to a third motor that provides power for the third guide rail.
[0016] In the device for eliminating the eccentricity and fatness of molded lenses as described above, the positioning mechanism, the standby platform, and the input platform are made of austenitic stainless steel.
[0017] Compared with the existing technology, the utility model has the following advantages:
[0018] 1. By designing the rotating platform, rotating platform transition plate, standby plate and input platform of the device, when the mold moves to the corresponding mechanism for positioning or transportation, the parts in contact with the mold are made of demagnetizing materials, eliminating the shaking and offset of the preform ball when the mold moves, thereby eliminating the eccentricity and meatiness of the finished product.
[0019] 2. The parts in contact with the mold are austenitic stainless steel. Austenitic stainless steel is basically non-magnetic. However, it will still have a certain degree of weak magnetism due to the influence of the processing technology during processing. Therefore, before the parts are assembled, they are uniformly demagnetized and then coated with a DLC diamond-like film layer on the surface to make the surface smooth, with a low friction coefficient and better wear resistance.
[0020] 3. The next process is high-temperature hot pressing. The high temperature will demagnetize the mold and material, so the preform ball does not shake or deviate during the processing.
Brief Description of the Drawings
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.
[0023] Figure 1 This is a schematic diagram of the front view of a device for eliminating the eccentricity and fatness of molded lenses in the utility model. Figure 1 ;
[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of a device for eliminating the eccentricity and fatness of molded lenses in this utility model. Figure 2 ;
[0025] Figure 3 A schematic diagram of an enlarged view of a device for eliminating the eccentricity and meatiness of molded lenses according to the present invention Figure 3 ;
[0026] Figure 4 This is a schematic diagram of the auxiliary pushing mechanism of a device for eliminating the eccentricity and fatness of molded lenses in this utility model. Figure 4 .
[0027] Figure 5 This is a mold diagram of a device for eliminating the eccentricity and meatiness of molded lenses in this utility model. Figure 5 .
[0028] Figure 6 This is a schematic cross-sectional view of a mold for a device for eliminating the eccentricity and fatness of molded lenses according to the utility model. Figure 6 . [Specific implementation method]
[0030] In order to make the technical problems, technical solutions and beneficial effects solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.
[0031] See also Figures 1 to 4 A device for eliminating the eccentricity and meatiness of molded lenses comprises a first conveying mechanism 1 for conveying the mold in a first direction, a positioning mechanism 2 provided on the first conveying mechanism 1 for positioning the mold to remove the lens from the mold or place a preform ball in it, a standby platform 3 provided at one end of the first conveying mechanism 1 for waiting to enter the next processing stage, an input platform 5 provided at one end of the standby platform 3 for loading the mold into the next process, the input platform 5 being connected to a second conveying mechanism 6 for conveying the input platform 5 in a second direction to enter the next process, the positioning mechanism 2, the standby platform 3, and the input platform 5 being composed of demagnetizing components or weak magnetic components to prevent the preform ball from shaking when the positioning mechanism 2 moves to the standby platform 3 and the input platform 5. The positioning mechanism 2, the standby platform 3, and the input platform 5 are made of austenitic stainless steel. In the process of transporting the mold from the positioning mechanism to the input platform, the parts used in the mechanism that is in direct contact with the mold are austenitic stainless steel. Austenitic stainless steel basically has no magnetic attraction, which prevents the mechanism that is in direct contact with the mold from generating magnetic attraction during the mold transportation process, causing the preform ball in the mold to shake, thereby eliminating the phenomenon of lens eccentricity and fatness. Lens fatness refers to the different thicknesses of the lens surface at different points on the arc with the same radius and the center of the lens as the center.
[0032] Furthermore, as a preferred embodiment of this solution but not a limitation, the positioning mechanism 2 includes a rotating mechanism 21 for positioning the mold 10. A first positioning mechanism 22 for limiting the displacement of the mold 10 is provided on one side of the rotating mechanism 21. A second positioning mechanism 23 is provided on the side of the rotating mechanism 21 away from the first positioning mechanism 22, which works together with the first positioning mechanism 22 to limit the displacement of the mold 10. The positioning mechanism ensures the accuracy of the placement of the preform pellets into the mold, facilitating the removal and placement of the finished product and preform pellets. The second positioning mechanism is provided on the other side of the rotating mechanism and cooperates with the first positioning mechanism to limit the displacement of the mold in the other direction, thereby achieving stable fixation of the mold in two directions.
[0033] Furthermore, as a preferred embodiment of the present invention but not a limitation, the rotating mechanism 21 includes a rotating platform 211 that allows the mold to rotate to a specific position. The outer periphery of the rotating platform 211 is provided with a rotating transition platform plate 212 that strengthens the support of the mold. The rotating platform and the rotating transition platform plate are made of demagnetizing materials, and the mold is not attracted to stay during positioning. At the same time, the rotating mechanism is used to place the mold and rotate it. Rotating a specific position allows the mold to be positioned. The rotating mechanism allows the mold to be processed at multiple angles, thereby improving processing flexibility and efficiency.
[0034] Furthermore, as a preferred embodiment of the present invention but not a limitation, the first positioning mechanism 22 includes a first positioning arm 231 capable of contacting the mold 10, the first positioning arm 231 is connected to a first cylinder 222 for pushing the first positioning arm 221 to move, the first positioning arm 231 is a demagnetizing material, and the first positioning arm is driven by the first cylinder, which can accurately control the movement of the positioning arm to ensure that the position of the mold in a specific direction is accurately controlled.
[0035] Furthermore, as a preferred embodiment of the present invention but not a limitation, the second positioning mechanism 23 includes a second positioning arm 231 capable of contacting the mold 10, the second positioning arm 231 is connected to a second cylinder 232 for pushing the second positioning arm 231 to move, the second positioning arm 231 is made of demagnetizing material, and the second positioning mechanism is arranged on the other side of the rotating mechanism and is used in conjunction with the first positioning mechanism to jointly limit the displacement of the mold in another direction, thereby achieving stable fixation of the mold in two directions.
[0036] Furthermore, as a preferred embodiment of the present invention but not a limitation, a first pulley 2211 and a second pulley 2212 are provided on the first positioning arm 221, and the first pulley 2211 and the second pulley 2212 can rotate around their own central axes. A third pulley 2311 and a fourth pulley 2312 are provided on the second positioning arm 231, and the third pulley 2311 and the fourth pulley 2312 can rotate around their own central axes. The first pulley 2211 and the second pulley 2212, the third pulley 2311 and the fourth pulley 2312 jointly clamp the positioning mold 10 and enable them to rotate when clamped. The first pulley 2211 and the second pulley 2212, the third pulley 2311 and the fourth pulley 2312 are made of demagnetizing materials or weak magnetic materials to prevent the mold from being attracted and causing the preform ball to shake when the mold rotates. Through the coordinated action of the four pulleys, the mold is precisely clamped to ensure that the mold is stable during the positioning process. The rolling characteristics of the pulleys reduce friction between the mold and reduce wear.
[0037] Furthermore, as a preferred embodiment of this solution but not a limitation, the first conveying mechanism 1 includes a guide rail 11 for transporting the positioning mechanism. The guide rail 11 is connected to a first motor 12 that drives the guide rail 11. An auxiliary pushing mechanism 15 is provided on one side of the guide rail 11 to push the mold 10 placed on the rotating platform 211 to the standby platform 3 and then to the input platform 5 after the mold 10 is in place. Driven by the first motor, the moving speed and position of the guide rail are precisely controlled, ensuring more accurate and controllable movement of the positioning mechanism. The auxiliary pushing mechanism can push the mold from one platform to another, ensuring a smooth process.
[0038] Furthermore, as a preferred embodiment of the present invention but not a limitation, the auxiliary pushing mechanism 15 includes a pushing guide rail 151 for moving in the first direction, and a pushing bracket 152 sliding on the pushing guide rail 151 is provided above the pushing guide rail 151, and the pushing bracket 152 is connected to the conveyor belt 153, and the conveyor belt 153 is connected to the second motor 155. Driven by the second motor 155, the conveyor belt 153 starts to move and drives the pushing bracket 152, and the pushing bracket 152 is connected to the third cylinder 156, and the third cylinder 156 is connected to a pushing arm 157 that can push the mold in the first direction and the second direction. The combination of the pushing guide rail 151 and the conveyor belt 153 ensures the precise movement of the pushing bracket 152, thereby realizing high-precision positioning of the mold. The pushing arm 157 can move in two directions, so that it can adapt to the pushing requirements in different directions. The pushing arm 157 is made of demagnetizing material, which eliminates the eccentricity and meatiness of the finished lens and enhances the flexibility of the equipment. Through the precise control of the cylinder and the motor, the pushing process is smooth, ensuring that the mold is prevented from shaking or deviating from the predetermined position during movement.
[0039] Furthermore, as a preferred embodiment of the present invention but not a limitation, the input platform 5 includes an input platform plate 51 of the same height as the standby platform 3, the input platform plate 51 is connected to a support frame 52 supporting the input platform plate 51, and the support frame 52 is connected to a second conveying mechanism 6 that allows the input platform 51 to slide in a second direction. The input platform plate is designed to be the same height as the standby platform, so that there is no height difference when the mold is transferred from the standby platform 3 to the input platform 5, ensuring a smooth transition and reducing vibration or displacement of the mold. The input platform plate is made of demagnetizing material, which prevents the mold from being attracted when transporting the mold from the standby platform to the input platform, thereby eliminating the eccentricity or meatiness of the finished product in the mold. The support frame 52 provides solid support to ensure that the input platform plate does not shake or tilt when carrying the mold.
[0040] Furthermore, as a preferred embodiment of this solution, but not limiting, the second conveying mechanism 6 includes a third guide rail 61 connected to the support frame 52, enabling the insertion platform 51 to slide in the second direction. A third motor 62 is connected to the third guide rail 61 to power the third guide rail 61. The second conveying mechanism 6 inserts the mold 10 on the insertion platform 51 into the high-temperature, high-pressure mechanism, where the upper and lower mold cores 101, 102 of the mold 10 are processed from the preform pellets 111 into finished lenses. The third motor powers the third guide rail, precisely controlling the movement distance and speed of the insertion platform in the second direction, ensuring accurate conveyance of the mold.
[0041] The working principle of this embodiment is as follows:
[0042] A device for eliminating the eccentricity and meatiness of molded lenses is used, such as Figure 1 As shown, the mold on the rotating platform is first rotated to the mold positioning position by the rotating platform, and the first pulley, the second pulley, the third pulley and the fourth pulley jointly clamp the mold and enable themselves and the mold to rotate during clamping, and the finished product in the mold is taken out, and then the preform ball is placed. After the placement is completed, it is transported to the standby platform by the first conveying mechanism, and the auxiliary pushing mechanism pushes the mold to the standby platform. After the input platform is in place, it is pushed to the input platform. The second conveying mechanism transports the mold on the input platform to the next process for hot pressing. After hot pressing, the mold is conveyed to the positioning mechanism in the opposite direction to take out the finished lens in the mold. The mechanism that is in direct contact with the mold in the process is made of austenitic stainless steel, which has basically no magnetism. The austenite phase at room temperature has non-magnetic characteristics, which prevents the mechanism in direct contact with the mold during the mold transportation process from generating magnetic attraction to the mold, causing the preform ball in the mold to shake, thereby eliminating the eccentricity of the lens. Since austenitic stainless steel is soft, a DLC diamond-like film is plated on the surface of the parts after processing, which makes the surface of the parts smooth, the friction coefficient small, and more wear-resistant. Although austenitic stainless steel is non-magnetic, it still has a certain weak magnetism due to the influence of the processing technology during processing. Therefore, the parts are demagnetized using a demagnetizer before assembly. Since the next process is high-temperature hot pressing, the high temperature will demagnetize the mold and material, so there is no need to replace the material of the parts in contact with the mold inside the molding machine.
[0043] The above are implementation methods provided in conjunction with specific content, and the specific implementation of this application is not limited to these descriptions. Any method structure that is similar to the method structure of this application, or any technical deduction or replacement based on the concept of this application, should be considered as the scope of protection of this application.
Claims
1. A device for eliminating the eccentricity and meatiness of molded lenses, characterized in that: The invention comprises a first conveying mechanism (1) for conveying the mold in a first direction, a positioning mechanism (2) for positioning the mold to remove the lens in the mold or to place a preform ball on the first conveying mechanism (1), a standby platform (3) for waiting to enter the next processing stage at one end of the first conveying mechanism (1), an input platform (5) for loading the mold to enter the next process at one end of the standby platform (3), and a second conveying mechanism (6) for conveying the input platform (5) in a second direction to enter the next process. The positioning mechanism (2), the standby platform (3) and the input platform (5) are composed of demagnetizing components or weak magnetic components to prevent the preform ball from shaking when the positioning mechanism (2) moves to the standby platform (3) and moves to the input platform (5).
2. The device for eliminating the eccentricity and fatness of molded lenses according to claim 1, characterized in that The positioning mechanism (2) includes a rotating mechanism (21) for positioning the mold when it is placed, a first positioning mechanism (22) for limiting the displacement of the mold is provided on one side of the rotating mechanism (21), and a second positioning mechanism (23) for limiting the displacement of the mold together with the first positioning mechanism (22) is provided on the side of the rotating mechanism (21) away from the first positioning mechanism (22).
3. The device for eliminating the eccentricity and fatness of molded lenses according to claim 2, characterized in that The rotating mechanism (21) comprises a rotating platform (211) for rotating the mold to a specific position, and a rotating transition platform plate (212) for reinforcing and supporting the mold is provided on the outer periphery of the rotating platform (211).
4. The device for eliminating the eccentricity and fatness of molded lenses according to claim 3, characterized in that The first positioning mechanism (22) comprises a first positioning arm (221) capable of contacting the mold, and the first positioning arm (221) is connected to a first cylinder (222) for pushing the first positioning arm (221) to move.
5. The device for eliminating the eccentricity and fatness of molded lenses according to claim 4, characterized in that The second positioning mechanism (23) includes a second positioning arm (231) capable of contacting the mold, and the second positioning arm (231) is connected to a second cylinder (232) for pushing the second positioning arm (231) to move.
6. The device for eliminating the eccentricity and fatness of molded lenses according to claim 5, characterized in that : The first positioning arm (221) is provided with a first pulley (2211) and a second pulley (2212), and the first pulley (2211) and the second pulley (2212) can rotate around their own central axes. The second positioning arm (231) is provided with a third pulley (2311) and a fourth pulley (2312), and the third pulley (2311) and the fourth pulley (2312) can rotate around their own central axes. The first pulley (2211) and the second pulley (2212), the third pulley (2311) and the fourth pulley (2312) jointly clamp the positioning mold and enable the mold to rotate when clamped.
7. The device for eliminating the eccentricity and fatness of molded lenses according to claim 6, characterized in that The first conveying mechanism (1) includes a guide rail (11) for transporting and positioning the mechanism, the guide rail (11) is connected to a first motor (12) for driving the guide rail (11) to move, and one side of the guide rail (11) is provided with an auxiliary pushing mechanism (15) for pushing the mold placed on the rotating platform (211) to the standby platform (3) and to the input platform (5) after the input platform (5) is in place, the auxiliary pushing mechanism (15) includes a pushing guide rail (151) for moving in the first direction, the pushing guide rail A pushing bracket (152) is provided above (151) and slides on the pushing guide rail (151). The pushing bracket (152) is connected to the conveyor belt (153). The conveyor belt (153) is connected to the second motor (155). Driven by the second motor (155), the conveyor belt (153) starts to move and drives the pushing bracket (152). The pushing bracket (152) is connected to the third cylinder (156). The third cylinder (156) is connected to the pushing arm (157) capable of pushing the mold in the first direction and the second direction.
8. The device for eliminating the eccentricity and fatness of molded lenses according to claim 7, characterized in that The input platform (5) includes an input platform plate (51) having the same height as the standby platform (3), the input platform plate (51) is connected to a support frame (52) for supporting the input platform plate (51), and the support frame (52) is connected to a second conveying mechanism (6) that enables the input platform (51) to slide in a second direction.
9. The device for eliminating the eccentricity and fatness of molded lenses according to claim 8, characterized in that The second conveying mechanism (6) includes a third guide rail (61) for connecting to the support frame (52) so that the input platform slides in the second direction, and the third guide rail (61) is connected to a third motor (62) for providing power to the third guide rail (61).
10. The device for eliminating the eccentricity and fatness of molded lenses according to claim 1, characterized in that : The positioning mechanism (2), the standby platform (3), and the input platform (5) are made of austenitic stainless steel.