A lens placement station for a bending machine
By designing a vacuum valve with gradually expanding vents and an elastic element at the lens placement station of the bending machine to control the air extraction speed, the problem of instantaneous high negative pressure at the bottom of the lens was solved, thus improving the lens yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN DESHIDA OPTICAL TECHNOLOGY CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-07-31
AI Technical Summary
Existing bending machines cannot control the suction speed during the suction process, which causes a sudden high negative pressure to be generated at the bottom of the lens, damaging the composite layer structure of the lens and reducing the yield rate.
Design a lens placement station for a bending machine. By setting vents and sealing areas on the vacuum valve, the vent area gradually expands, and the pumping speed is gradually increased. An elastic element is used to push the vacuum valve into the vacuum column. The vacuum column and the hexagonal copper column form an air channel, so as to achieve controllable pumping speed.
Effectively controlling the air extraction speed avoids instantaneous high negative pressure at the bottom of the lens, protects the lens composite layer structure, and improves the lens yield.
Smart Images
Figure CN224576162U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lens bending machine technology, and in particular to a lens placement station for a lens bending machine. Background Technology
[0002] In current bending machines, a vacuum column is used to install the cup mold. The vacuum column has an air channel inside, which connects the air extraction device and the cup mold. There is usually no vacuum valve in the air channel. When the air extraction device is turned on to extract air, a high negative pressure is instantly generated in the cup mold space below the lens, which instantly adsorbs the bottom of the lens. This method cannot control the air extraction speed and will also cause the composite layer structure of the lens to be damaged by this instantaneous high negative pressure, reducing the yield of the lens. Utility Model Content
[0003] The purpose of this invention is to provide a lens placement station for a bending machine that can control the air extraction speed to gradually increase.
[0004] To achieve the above objectives, the solution of this utility model is as follows:
[0005] A lens placement station for a bending machine includes a vacuum column with a cup mold on its top side for placing the lens. An air passage is provided inside the vacuum column, connecting to the space beneath the cup mold and connected to an air extraction device. The air extraction device evacuates the air passage to create a negative pressure in the space beneath the cup mold. A vacuum valve is inserted into the vacuum column and can move in either direction of insertion or removal. The vacuum valve has an air hole and a sealing area. The air hole connects to the air passage when the vacuum valve moves towards insertion, and the sealing area blocks the air passage when the vacuum valve moves towards removal. The area of the air hole gradually increases from the end closer to the sealing area to the end farther away. When the vacuum valve is inserted into the vacuum column, the overlapping area of the air hole and air passage gradually increases, thereby gradually increasing the air extraction rate of the air extraction device.
[0006] Furthermore, the shape of the pores first expands in a V-shape from the end closer to the occlusion area to the end farther away from the occlusion area, and then expands in a rectangular shape.
[0007] Furthermore, the two side walls of the stomata, which extend in a V-shape, bulge in an arc shape towards the center of the stomata.
[0008] Furthermore, an elastic element is provided between the vacuum valve and the vacuum column, which is used to elastically push the vacuum valve to move in the direction of insertion into the vacuum column.
[0009] Furthermore, the elastic element is a spring, and the vacuum valve is inserted through the vacuum column. One end of the vacuum valve that passes through the vacuum column protrudes from the side wall of the vacuum column. The spring is sleeved on the end of the vacuum valve that passes through the vacuum column. One end of the spring and the end of the vacuum valve that passes through the vacuum column are fixed together, and the other end of the spring abuts against the side wall of the vacuum column to elastically push the vacuum valve to move in the direction of insertion into the vacuum column.
[0010] Furthermore, the bowl mold is detachably mounted on the vacuum column.
[0011] Furthermore, the vacuum column is radially provided with threaded holes, and the outer surface of the bottom of the bowl mold is provided with threaded posts. By screwing the threaded posts into the threaded holes, the bowl mold can be detachably mounted on the vacuum column.
[0012] Furthermore, the threaded hole connects to the air passage, and the threaded post is provided with a bowl-shaped air passage. The two ends of the bowl-shaped air passage are respectively connected to the bowl-shaped space below the lens and the air passage.
[0013] Furthermore, the vacuum column includes a vacuum shaft and a hexagonal copper column. The vacuum shaft has a vacuum shaft air passage, and the hexagonal copper column has a hexagonal copper column air passage. The vacuum shaft and the hexagonal copper column are connected to each other at their ends so that the vacuum shaft air passage and the hexagonal copper column air passage are connected to form the air passage of the vacuum column.
[0014] After adopting the above solution, the beneficial effects of this utility model are as follows:
[0015] The area of the air hole in the vacuum valve of this utility model gradually increases from the end near the sealing area to the end away from the sealing area. When the vacuum valve is inserted into the vacuum column, the area of overlap and conduction between the air hole and the air channel gradually increases, so that the pumping speed of the pumping device gradually increases, which facilitates the control of the pumping speed and also improves the yield of lens bending. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the lens placement station structure of this utility model. Figure 1 ;
[0017] Figure 2 This is a schematic diagram of the lens placement station of this utility model. Figure 2 ;
[0018] Figure 3 This is a schematic diagram of the bowl mold structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the vacuum valve structure of this utility model;
[0020] Figure 5 This is a schematic diagram of the vacuum valve sealing the air passage of this utility model;
[0021] Figure 6This is a schematic diagram of the vacuum valve's air passage of this utility model.
[0022] Label Explanation:
[0023] 10. Lens placement station; 11. Vacuum column; 111. Air passage; 112. Threaded hole; 113. Vacuum shaft; 114. Hexagonal copper column; 12. Bowl mold; 121. Threaded column; 122. Bowl mold air passage; 13. Vacuum valve; 131. Air hole; 132. Sealing area; 14. Elastic element; 15. Switching component; 20. Lens. Detailed Implementation
[0024] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0025] like Figures 1 to 6 As shown, this utility model provides a lens placement station 10 for a bending machine, including a vacuum column 11, a bowl mold 12 is provided on the top side of the vacuum column 11 for placing a lens 20, an air passage 111 is provided inside the vacuum column 11, the air passage 111 connects to the space of the bowl mold 12 below the lens 20, and the air passage 111 is connected to an air extraction device for evacuating the air passage 111 to create a negative pressure in the space of the bowl mold 12 below the lens 20; a vacuum valve 13 is inserted into the vacuum column 11, the vacuum valve 13 can move in the direction of insertion or removal of the vacuum column 11. The vacuum valve 13 has an air hole 131 and a blocking area 132. The air hole 131 is used to connect with the air passage 111 when the vacuum valve 13 moves in the direction of inserting the vacuum column 11. The blocking area 132 is used to connect with and block the air passage 111 when the vacuum valve 13 moves in the direction of pulling out the vacuum column 11. The area of the air hole 131 gradually increases from the end near the blocking area 132 to the end away from the blocking area 132. When the vacuum valve 13 is inserted into the vacuum column 11, the overlapping and connecting area of the air hole 131 and the air passage 111 gradually increases, so that the pumping speed of the pumping device gradually increases.
[0026] Furthermore, such as Figure 4 As shown, the shape of the vent 131 first expands in a V-shape from the end near the sealing area 132 to the end away from the sealing area 132, and then expands in a rectangular shape.
[0027] Preferably, the two side walls of the vent 131, which extend in a V-shape, bulge in an arc shape toward the center of the vent 131. This is so that during the process of the vent 131 and the air passage 111 overlapping, the area of overlap between the air passage 111 and the vent 131 is small in the initial stage, and then the area of overlap gradually increases. This makes the air extraction rate of the air extraction device slow at first and then fast, so that a high negative pressure is not generated instantly in the space of the bowl mold 12 below the lens 20, which would damage the composite layer structure of the lens 20.
[0028] Specific examples Figures 5 to 6As shown, the cross-section of the air passage 111 is circular. When the vacuum valve 13 is fully inserted into the air passage 111, the air passage 111 and the air hole 131 do not completely overlap, but partially overlap and conduct. During the process of the air passage 111 and the air hole 131 overlapping and conducting, the overlapping and conducting area gradually expands, thereby controlling the pumping speed of the pumping device and avoiding the instantaneous generation of negative pressure.
[0029] Furthermore, such as Figures 1 to 2 As shown, an elastic element 14 is provided between the vacuum valve 13 and the vacuum column 11. The elastic element 14 is used to elastically push the vacuum valve 13 to move in the direction of insertion into the vacuum column 11. In the absence of external force, the elastic element 14 will keep the air passage 111 and the air hole 131 connected. When closing the air passage 111, it is only necessary to use the switch component 15 to push the vacuum valve 13 in the direction of pulling out the vacuum column 11, so that the blocking area 132 is aligned with the air passage 111, thereby closing the air passage 111 and stopping the pumping. When opening the air passage 111, it is only necessary to release the switch component 15 from pushing the vacuum valve 13. The elasticity of the elastic element 14 will allow the vacuum valve 13 to move in the direction of insertion into the vacuum column 11, so that the air hole 131 is aligned with the air passage 111, thereby opening the air passage 111.
[0030] Specifically, the elastic element 14 is a spring, the vacuum valve 13 is inserted through the vacuum column 11, and one end of the vacuum valve 13 that passes through the vacuum column 11 protrudes from the side wall of the vacuum column 11. The spring is sleeved on the end of the vacuum valve 13 that passes through the vacuum column 11. One end of the spring and the end of the vacuum valve 13 that passes through the vacuum column 11 are fixed together, and the other end of the spring abuts against the side wall of the vacuum column 11 to elastically push the vacuum valve 13 to move in the direction of insertion into the vacuum column 11.
[0031] Specifically, the mold 12 is detachably mounted on the vacuum column 11, and the mold 12 has different sizes to accommodate lenses 20 of different sizes. The detachable mounting of the mold 12 on the vacuum column 11 makes it easy to replace the mold 12.
[0032] Specifically, the vacuum column 11 is radially provided with a threaded hole 112, and the bottom outer surface of the bowl mold 12 is provided with a threaded post 121. By screwing the threaded post 121 into the threaded hole 112, the bowl mold 12 is detachably mounted on the vacuum column 11.
[0033] Specifically, the threaded hole 112 is connected to the air passage 111, and the threaded post 121 is provided with a bowl mold air passage 122. The two ends of the bowl mold air passage 122 are respectively connected to the bowl mold 12 space below the lens 20 and the air passage 111.
[0034] Specifically, the vacuum column 11 includes a vacuum shaft 113 and a hexagonal copper column 114. The vacuum shaft 113 has a vacuum shaft air passage, and the hexagonal copper column 114 has a hexagonal copper column air passage. The vacuum shaft 113 and the hexagonal copper column 114 are connected to each other at their ends so that the vacuum shaft air passage and the hexagonal copper column air passage are connected to form the air passage 111 of the vacuum column 11. Specifically, the ends of the vacuum column 11 and the hexagonal copper column 114 are sealed together. The connection method can be either a sealing snap-fit or welding.
[0035] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments and to explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.
[0036] Furthermore, the directions such as front, back, left, and right mentioned in this embodiment are only for reference and do not represent the actual directions in use. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0037] The above description is only a preferred embodiment of this utility model and is not intended to limit the design of this case. All equivalent changes made based on the key design of this case shall fall within the protection scope of this case.
Claims
1. A lens placement station for a surfacing press, characterized by: It includes a vacuum column, a bowl mold is provided on the top side of the vacuum column, the bowl mold is used to place the lens, an air channel is provided inside the vacuum column, the air channel is connected to the bowl mold space below the lens, and the air channel is connected to an air extraction device, which is used to extract air from the air channel to create a negative pressure in the bowl mold space below the lens. A vacuum valve is inserted into the vacuum column. The vacuum valve can move in the direction of inserting or pulling out the vacuum column. The vacuum valve has an air hole and a blocking area. The air hole is used to connect and open the air passage when the vacuum valve moves in the direction of inserting the vacuum column. The blocking area is used to connect and block the air passage when the vacuum valve moves in the direction of pulling out the vacuum column. The area of the air hole gradually increases from the end closer to the blocking area to the end farther away from the blocking area. When the vacuum valve is inserted into the vacuum column, the overlapping and connecting area of the air hole and the air passage gradually increases, so that the pumping speed of the pumping device gradually increases.
2. A lens placement station for a press-bender as defined in claim 1, characterized in that: The shape of the pores first expands in a V-shape from the end closer to the occlusion area to the end farther away from the occlusion area, and then expands in a rectangular shape.
3. A lens placement station for a press-bender as defined in claim 2, characterized in that: The two side walls of the stomata expand and extend in a V-shape, forming an arc-shaped protrusion towards the center of the stomata.
4. A lens placement station for a press-bender as defined in claim 1, wherein: An elastic element is provided between the vacuum valve and the vacuum column. The elastic element is used to elastically push the vacuum valve to move in the direction of insertion into the vacuum column.
5. A lens placement station for a press-bender as claimed in claim 4, characterized in that: The elastic element is a spring. The vacuum valve is inserted through the vacuum column. One end of the vacuum valve protrudes from the side wall of the vacuum column. The spring is sleeved on the end of the vacuum valve that passes through the vacuum column. One end of the spring and the end of the vacuum valve that passes through the vacuum column are fixed. The other end of the spring abuts against the side wall of the vacuum column, so as to elastically push the vacuum valve to move in the direction of insertion into the vacuum column.
6. A lens placement station for a press-bender as defined in claim 1, wherein: The bowl mold is detachably mounted on the vacuum column.
7. A lens placement station for a press-bender as defined in claim 1, wherein: The vacuum column has a threaded hole in the radial direction, and the bottom outer surface of the bowl mold has a threaded post. The bowl mold can be detachably mounted on the vacuum column by screwing the threaded post into the threaded hole.
8. A lens placement station for a press-bender as defined in claim 7, wherein: The threaded hole connects to the air passage, and the threaded post is provided with a bowl-shaped air passage. The two ends of the bowl-shaped air passage are respectively connected to the bowl-shaped space below the lens and the air passage.
9. A lens placement station for a bending machine as described in claim 1, characterized in that: The vacuum column includes a vacuum shaft and a hexagonal copper column. The vacuum shaft has a vacuum shaft air passage, and the hexagonal copper column has a hexagonal copper column air passage. The vacuum shaft and the hexagonal copper column are connected to each other at their ends so that the vacuum shaft air passage and the hexagonal copper column air passage are connected to form the air passage of the vacuum column.