Four-station two-machine-head lens mold opening device

Abstract

The present application relates to a four-station two-machine-head lens mold opening device, a machine table, a rotating platform, a lens transfer manipulator, a lens positioning unit, a lens visual edge finding unit and a lens mold opening unit. The four-station two-machine-head lens mold opening device disclosed by the present application firstly places the lens on the lens measurement positioning mechanism by manual or a lens feeding machine; the visual edge finding mechanism photographs the lens to find the mold opening position and angle of the lens; after the visual photographing is completed, the four-station rotating table continues to rotate clockwise by 90 degrees to send the lens to the mold opening mechanism, and the mold opening mechanism adjusts the cutter and angle of the cutter to open the mold of the lens according to the mold opening data; after the mold opening is completed, the lens after the mold opening is transferred to the unloading mechanism, so as to realize the separation of the A mold, the lens body and the B mold, reduce the labor cost of the lens production enterprise in the lens mold opening link, and improve the production efficiency and the yield.

Description

Technical Field

[0001] This invention relates to the field of lens manufacturing technology, and in particular to a four-station, two-head lens mold opening device. Background Technology

[0002] In the eyeglass lens manufacturing industry, especially for resin lenses, there are two main types: cast resin lenses and injection-molded resin lenses. Currently, the casting process is more commonly used in lens production to obtain cast resin lenses. Furthermore, with the gradual expansion of the resin lens market and the diversification of consumer demands, the performance, processes, and equipment for cast resin lenses are constantly being improved and perfected.

[0003] In the production process of resin-filled lenses, two mold halves are typically glued together first. Liquid resin is then poured between the two molds, sealed, and placed in an oven for curing. After curing, the lens between the two molds needs to be removed, resulting in the final lens. This process requires separating the lens from the molds; this action is called mold opening. Mold opening involves opening the two molds and removing the cured lens. Related technologies use a compression molding method for mold opening, specifically: the operator uses a small mechanical lever-based pressure head with a pressure block at the front, aligning it with the lens between the two molds. The rear pressure rod is manually pressed, moving the pressure head to press the lens, repeating this process multiple times until the lens separates from the mold. Therefore, this method of mold opening requires manual operation. The operator must accurately align the lens, avoiding pressing too hard on the mold and causing damage. Furthermore, the operator must adjust the pressure according to the lens's thickness, material, and diameter during the pressing process to prevent damage. This requires skilled and experienced operators. This results in low production efficiency, high requirements for operators, low automation, and an increased scrap rate, which affects production volume. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the fact that the existing technology of using manual assistance for lens mold making cannot meet the needs of enterprises for automated production. In addition, the traditional manual method has the problem of low work efficiency.

[0005] To solve the above-mentioned technical problems, the present invention provides a four-station, two-head lens mold-making device, comprising: a machine base; a rotating platform disposed on the machine base, the rotating platform being divided into a lens positioning station, a lens visual edge-finding station, a lens mold-making station, and a lens unloading station during intermittent 90° rotation; and four lens transfer robots connected to the rotating platform, the rotating platform driving the lens transfer robots to sequentially pass through the lens positioning station, the lens visual edge-finding station, the lens mold-making station, and the lens unloading station, each lens transfer robot having a lens tray attached to it. The lens tray contains a lens mold to be molded; a lens positioning unit is provided at the positions of the lens positioning station, the lens visual edge finding station, and the lens mold opening station, and the lens positioning unit is used to position the lens mold to be molded in the lens tray; a lens visual edge finding unit is set on a rotating platform, and the lens visual edge finding unit is used to measure the mold opening position and angle of the lens mold to be molded in the lens tray; a lens mold opening unit is set on a rotating platform, and the lens mold opening unit is used to open the lens mold to be molded in the lens tray.

[0006] In one embodiment of the present invention, the rotating platform includes a platform support, a rotating motor, a rotating disk, a transmission wheel, a rotating shaft, and a rotating disk connecting frame. The platform support is fixedly mounted on the machine base. The rotating motor and the transmission wheel are both mounted on the platform support. The rotating motor is connected to the rotating shaft through the transmission wheel. The rotating disk is connected to the rotating shaft through the rotating disk connecting frame. The lens transfer robot is arranged in a circular array on the rotating disk.

[0007] In one embodiment of the present invention, the lens transfer robot includes a robot mounting base, a clamping drive cylinder, a robot lifting plate, a mold suction nozzle, a ball spline, and a rotary drive assembly. The clamping drive cylinder is fixedly mounted on the robot mounting base, and the piston rod of the clamping drive cylinder is connected to the robot lifting plate. The rotary drive assembly is mounted on the robot mounting base, and the rotary drive assembly is connected to the outer wall at the middle position of the ball spline axis. The upper end of the ball spline is connected to the robot lifting plate, and the lower end of the ball spline is connected to the mold suction nozzle. A limiting ring is provided at the lower end of the ball spline, and a buffer spring is provided between the limiting ring and the rotary support base.

[0008] In one embodiment of the present invention, the lens tray includes a right-angle connecting plate, a first side plate, two symmetrical second side plates, and a base plate. The upper end of the right-angle connecting plate is connected to a robotic arm, and the lower end of the right-angle connecting plate is fixedly connected to the first side plate. The first side plate and the two symmetrical second side plates are respectively connected to three adjacent sides of the base plate. The lens mold is placed on the base plate and is located within the area enclosed by the first side plate and the two symmetrical second side plates. The base plate is provided with a first through hole and a second through hole. The end of the second side plate that connects to the base plate is provided with a third through hole, and the second through hole and the third through hole communicate with each other.

[0009] In one embodiment of the present invention, the lens positioning unit includes a lifting drive assembly, a positioning support frame, an electric gripper, and two symmetrically arranged gripper handles. The positioning support frame is connected to the lifting drive assembly, the electric gripper is disposed on the positioning support frame, and the two symmetrically arranged gripper handles are connected to the electric gripper. The electric gripper drives the two symmetrically arranged gripper handles to open or close.

[0010] In one embodiment of the present invention, two symmetrically arranged positioning rods are connected to the gripper. When the electric gripper drives the two symmetrically arranged gripper to close, the positioning rods are used to contact and position the lens mold to be inspected.

[0011] In one embodiment of the present invention, a positioning mounting plate is provided on the upper surface of the positioning support frame, and a mold support block is provided on the positioning mounting plate. The lifting drive assembly drives the mold support block to move upward to make contact with the lens mold to be tested in the lens tray.

[0012] In one embodiment of the present invention, the lens visual edge finding unit includes a support base and a motion system. The motion system is disposed on the support base and is equipped with a camera and a light source. The light source is used to provide the light source required by the camera, and the camera is used for measuring the position of the lens mold opening position.

[0013] In one embodiment of the present invention, the lens mold opening unit includes a dual-axis motion mechanism, a tool angle rotation mechanism, a mold opening tool, and a lens blocking mechanism. The tool angle rotation mechanism is connected to the dual-axis motion mechanism. The mold opening tool is disposed on the tool angle rotation mechanism. The dual-axis motion mechanism is used to adjust the position between the mold opening tool and the lens mold. The tool angle rotation mechanism is used to adjust the angle between the mold opening tool and the lens mold. The lens blocking mechanism is disposed on the other side of the lens tray 4 opposite to the mold opening tool. The lens blocking mechanism is used to limit the movement of the lens mold.

[0014] In one embodiment of the present invention, the lens blocking mechanism includes a blocking linear module, a horizontal mounting plate, a blocking block, and a blocking plate mounting bracket. The horizontal mounting plate is connected to a slider of the blocking linear module. One end of the blocking plate mounting bracket is fixedly mounted on the horizontal mounting plate, and the blocking block is mounted on the other end of the blocking plate mounting bracket.

[0015] The technical solution of the present invention has the following advantages compared with the prior art: The four-station, two-head lens mold-making equipment of this invention first places the lens on the lens measuring and positioning mechanism manually or by a lens loading machine. Then, the four-station turntable rotates 90 degrees clockwise to send the lens to the vision edge-finding mechanism. The vision edge-finding mechanism photographs the lens, finds the mold-making position and angle, and sends the mold-making parameters to the mold-making mechanism. After the vision photograph is completed, the four-station turntable continues to rotate 90 degrees clockwise to send the lens to the mold-making mechanism. The mold-making mechanism adaptively adjusts the cutting tools and angles of the cutting tools according to the mold-making data to perform mold-making. After the mold-making is completed, the four-station turntable rotates 90 degrees clockwise to transfer the molded lens to the unloading mechanism, where it is picked up manually or by the lens unloading equipment. This achieves the separation of the lens A mold, the lens body, and the B mold, reducing the labor costs for lens manufacturers in the lens mold-making process, while improving production efficiency and yield. Attached Figure Description

[0016] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein... Figure 1 This is a schematic diagram of the structure of the four-station, two-head lens mold opening device of the present invention; Figure 2 This is a top view of the four-station, two-head lens mold opening device of the present invention; Figure 3 This is a schematic diagram of the rotating platform of the present invention; Figure 4 This is a schematic diagram of the structure of the lens transfer robot of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the structure of the lens transfer robot of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the lens tray structure of the present invention; Figure 7 This is a schematic diagram of the lens positioning unit of the present invention; Figure 8 This is a top view of the lens positioning unit of the present invention; Figure 9 This is a schematic diagram of the lens visual edge-finding unit of the present invention; Figure 10 This is a schematic diagram of the lens mold-making unit of the present invention. Figure 1 ; Figure 11 This is a schematic diagram of the lens mold-making unit of the present invention. Figure 2 ; Figure 12 This is a partial structural schematic diagram of the lens mold-making unit of the present invention; Figure 13 This is a schematic diagram of the dual-axis motion mechanism of the present invention; Figure 14 This is a schematic diagram of the mold-opening tool of the present invention; Figure 15 This is a schematic diagram of the lens blocking mechanism of the present invention.

[0017] Explanation of reference numerals in the accompanying drawings: Machine base 1, Dual-axis motion mechanism 101, Tool angle rotation mechanism 102, Mold opening tool 103, Lens blocking mechanism 104, Horizontal linear module 105, Horizontal support plate 106, Vertical support plate 107, Vertical linear module 108, Mounting base 109, Motor mounting bracket 110, Drive motor 111, Tool holder 112, Blade 113, Mounting hole 114, Blocking linear module 115, Horizontal mounting plate 116, Blocking block 117, Blocking plate mounting plate Mounting bracket 118, rotating platform 2, platform support 21, rotary motor 22, rotating disk 23, transmission wheel, rotating shaft 24, turntable connecting frame 25, right-angle connecting plate 219, side plate one 220, two symmetrical side plates two 221, base plate 222, rectangular through hole 223, through hole one 224, through hole two 225, through hole three 226, robot arm mounting base 227, clamping drive cylinder 228, robot arm lifting plate 229, mold suction nozzle 230, ball spline 231, rotary drive assembly 232 234. Guide rail 235. Guide slider 236. Rotary drive motor 237. Drive wheel 238. Driven wheel 239. Belt 230. Rotary support base 241. Limit ring 241. Lens transfer robot 3. Support base 301. Motion system 302. Camera, light source, forward and backward linear motion module 307. Lifting linear motion module 308. Vertical mounting plate two 309. Horizontal mounting plate two 310. Horizontal mounting plate three 311. Vertical mounting plate three 312. Auxiliary light source support frame 31 3. Auxiliary light source 314, Lifting drive assembly 321, Positioning support frame 322, Electric gripper 323, Gripper gripper 324, Positioning rod 325, Positioning mounting plate 326, Mold support block 327, Circular groove 328, Lifting mounting seat 329, Lifting drive motor 330, Screw mounting seat, Lifting drive screw 332, Lifting plate 333, Linear guide rail 334, Guide slider 335, Lens tray 4, Lens positioning unit 5, Lens vision edge finding unit 6, Lens mold opening unit 7. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0019] Reference Figure 1 , 2 As shown, the four-station, two-head lens mold-making device of the present invention includes: a machine base 1; a rotating platform 2, which is mounted on the machine base 1, and the rotating platform 2 is divided into a lens positioning station, a lens visual edge-finding station, a lens mold-making station, and a lens unloading station during intermittent 90° rotation; and four lens transfer robots 3, which are connected to the rotating platform 2, and the rotating platform 2 drives the lens transfer robots 3 to sequentially pass through the lens positioning station, the lens visual edge-finding station, the lens mold-making station, and the lens unloading station. Lens trays 4 are connected to the lens transfer robots 3. 4 contains a lens mold to be opened; a lens positioning unit 5, which is provided at the lens positioning station, the lens visual edge finding station and the lens mold opening station, and the lens positioning unit 5 is used to position the lens mold to be opened in the lens tray 4; a lens visual edge finding unit 6, which is set on the rotating platform 2, and the lens visual edge finding unit 6 is used to measure the mold opening position and angle of the lens mold to be opened in the lens tray 4; a lens mold opening unit 7, which is set on the rotating platform 2, and the lens mold opening unit 7 is used to open the lens mold to be opened in the lens tray 4.

[0020] Reference Figure 3 As shown, the rotating platform 2 includes a platform support 21, a rotary motor 22, a rotating disk 23, a transmission wheel, a rotating shaft 24, and a turntable connecting frame 25. The platform support 21 is fixedly mounted on the machine base 1. The rotary motor 22 and the transmission wheel are both mounted on the platform support 21. The rotary motor 22 is connected to the rotating shaft 24 through the transmission wheel. The rotating disk 23 is connected to the rotating shaft 24 through the turntable connecting frame 25. The lens transfer robot 3 is arranged in a circular array on the rotating disk 23.

[0021] Reference Figure 4 , 5As shown, the lens transfer robot 3 includes a robot mounting base 227, a clamping drive cylinder 228, a robot lifting plate 229, a mold suction nozzle 230, a ball spline 231, and a rotary drive assembly 232. The clamping drive cylinder 228 is fixedly mounted on the robot mounting base 227, and its piston rod is connected to the robot lifting plate 229. The rotary drive assembly 232 is mounted on the robot mounting base 227 and is connected to the outer wall of the ball spline 231 at the midpoint of its axial direction. The upper end of the ball spline 231 is connected to the robot lifting plate 229, and the lower end of the ball spline 231 is connected to the mold suction nozzle 230. The robot mounting base 227 is provided with a guide rail 234, and the robot lifting plate 229 is provided with a guide slider 235. The guide slider 235 and the guide rail 234 are slidably connected.

[0022] In the above structure, the rotary drive assembly 232 includes a rotary drive motor 236, a drive wheel 237, a driven wheel 238, a belt 239, and a rotary support base 240. The rotary support base 240 is fixedly connected to the robot arm mounting base 227. The rotary drive motor 236, the drive wheel 237, and the driven wheel 238 are all mounted on the rotary support base 240. The shaft of the rotary drive motor 236 is connected to the drive wheel 237. The drive wheel 237 is connected to the driven wheel 238 via the belt 239. The driven wheel 238 is connected to the ball spline 231.

[0023] In the above structure, a limiting ring 241 is provided at the lower end of the ball spline 231, and a buffer spring is provided between the limiting ring 241 and the rotary support 240. The rotary drive assembly 232 drives the ball spline 231 to rotate, thereby driving the lens mold adsorbed by the mold suction nozzle 230 to rotate. The rotary support 240 is provided with a detection camera 243, which is used to detect the gap between the mold and the lens.

[0024] Reference Figure 6As shown, the lens tray 4 includes a right-angle connecting plate 219, a first side plate 220, two symmetrical second side plates 221, and a base plate 222. The upper end of the right-angle connecting plate 219 is connected to the lens transfer robot 3, and the lower end of the right-angle connecting plate 219 is fixedly connected to the first side plate 220. The first side plate 220 and the two symmetrical second side plates 221 are respectively connected to three adjacent sides of the base plate 222. The lens mold is placed on the base plate 222, and the lens mold is located within the area enclosed by the first side plate 220 and the two symmetrical second side plates 221. The first side plate 220 and the two symmetrical second side plates 221 are both perpendicular to the base plate 222. The first side plate 220 is provided with a rectangular through hole 223. The base plate 222 has through holes 224 and 225. The end of the side plate 221 that connects to the base plate 222 has a through hole 226, and through holes 225 and 226 are connected. Through hole 224 is directly opposite the mold support block 327, and the cross-sectional area of ​​through hole 224 is larger than that of the mold support block 327. The mold support block 327 can pass through through hole 224 to contact the lens mold. Driven by the electric gripper 323, the four positioning rods 325 can pass through through holes 225 and 226 to enter the area enclosed by side plate 220 and the two symmetrical side plates 221 to measure the lens mold. Bakelite is preferably used as the material for the mold support block 327, as it provides good support.

[0025] Reference Figure 7 , 8 As shown, the lens positioning unit 5 includes a lifting drive assembly 321, a positioning support frame 322, an electric gripper 323, and two symmetrically arranged gripper handles 324. The positioning support frame 322 is connected to the lifting drive assembly 321. The electric gripper 323 is mounted on the positioning support frame 322. The two symmetrically arranged gripper handles 324 are connected to the electric gripper 323. The electric gripper 323 drives the two symmetrically arranged gripper handles 324 to open or close.

[0026] In the above structure, two symmetrically arranged positioning rods 325 are connected to the gripper 324. When the electric gripper 323 drives the two symmetrically arranged gripper 324 to close, the positioning rods 325 are brought into contact with the lens mold to be inspected. The positioning rods 325 are cylindrical rods. Since there are two symmetrically arranged gripper 324s, and each gripper 324 is connected to two symmetrically arranged positioning rods 325, there are a total of four positioning rods 325. The four positioning rods 325 are located at the four corners of a rectangular cross-section. The lens mold is located within the cross-sectional area of ​​the four positioning rods 325. Under the drive and contraction of the electric gripper 323, the four positioning rods 325 can approach the lens mold and contact the outer wall of the lens mold, thereby measuring the diameter of the lens mold. Since the lens mold to be inspected is a hamburger-shaped structure with three layers stacked together, and the radial cross-section of the lens mold to be inspected is circular, the axial direction of the positioning rods 325 is perpendicular to the radial cross-section of the lens mold to be inspected. There are four through holes 225 and four through holes 226, which correspond one-to-one with the four positioning rods 325. The positioning rods 325 are perpendicular to the cross section of the through hole 225 and are in the same direction as the through hole 326. When the positioning rods 325 move inward, they can pass through the through hole 326 to avoid interference and move along the through hole 225.

[0027] In the above structure, a positioning mounting plate 326 is provided on the upper surface of the positioning support frame 322, and a mold support block 327 is provided on the positioning mounting plate 326. The lifting drive assembly 321 drives the mold support block 327 to move upward to contact the lens mold to be tested in the lens tray 4. The positioning mounting plate 326 is a U-shaped plate and is located between two symmetrically arranged gripper grippers 324. After the lifting drive assembly 321 drives the mold support block 327 to lift the lens mold from the lens tray 4, the diameter of the lens mold is measured by four positioning rods 325. A circular groove 328 is provided on the end face of the mold support block 327 that contacts the lens mold. The circular groove 328 is used to reduce the viscous resistance between the lens mold and the mold support block 327. The through hole 224 is directly opposite the mold support block 327, and the cross-sectional area of ​​the through hole 224 is larger than that of the mold support block 327. The mold support block 327 can pass through the through hole 224 and contact the lens mold. The four positioning rods 325, driven by the electric gripper 323, can pass through the through hole 225 and the through hole 326 to enter the area enclosed by the side plate 220 and the two symmetrical side plates 221 to measure the lens mold.

[0028] In the above structure, the lifting drive assembly 321 includes a lifting mounting base 329, a lifting drive motor 330, a lead screw mounting base, a lifting drive lead screw 332, and a lifting plate 333. The lifting drive motor 330 and the lead screw mounting base are both mounted on the lifting mounting base 329, and the lifting drive lead screw 332 is mounted on the lead screw mounting base. The lifting drive motor 330 and the lifting drive lead screw 332 are connected. The lifting plate 333 and the lead screw nut on the lifting drive lead screw 332 are fixedly connected. A linear guide rail 334 is provided on the lifting mounting base 329, and a guide slider 335 is provided on the lifting plate 333. The guide slider 335 and the linear guide rail 334 are slidably connected.

[0029] Reference Figure 9 As shown, the lens visual edge finding unit 6 includes a support base 301 and a motion system 302. The motion system 302 is mounted on the support base 301. The motion system 302 is equipped with a camera and a light source. The light source is used to provide the light source required by the camera. The camera is used for measuring the position of the lens mold opening position.

[0030] In the above structure, the motion system 302 includes a forward and backward linear motion module 307, a lifting linear motion module 308, a second vertical mounting plate 309, and a second horizontal mounting plate 310. The lifting linear motion module 308 and the forward and backward linear motion module 307 are connected by sliders. The second vertical mounting plate 309 and the lifting linear motion module 308 are also connected by sliders. The second horizontal mounting plate 310 is fixedly connected to the second vertical mounting plate 309. The camera and light source are both mounted on the second horizontal mounting plate 310. The lifting linear motion module 308 and the forward and backward linear motion module 307 are used to adjust the position of the camera relative to the lens mold to be inspected. The forward and backward linear motion module 307 moves in a direction that approaches or moves away from the lens tray 4, adjusting the distance between the camera and the lens mold to be inspected. The lifting linear motion module 308 moves along the axis of the lens, adjusting the vertical position of the camera relative to the lens mold to be inspected. A horizontal mounting plate 311 is connected to the slider of the forward and backward linear motion module 307, and a vertical mounting plate 312 is vertically connected to the horizontal mounting plate 311. The lifting linear motion module 308 is mounted on the vertical mounting plate 312.

[0031] In addition, the support base 301 is provided with an auxiliary light source support frame 313, and the auxiliary light source support frame 313 is provided with an auxiliary light source 314, the light source of the auxiliary light source 314 facing the lens tray 4.

[0032] Reference Figure 10 , 11As shown, the lens mold opening unit 7 includes several main parts: a dual-axis motion mechanism 101, a tool angle rotation mechanism 102, a mold opening tool 103, and a lens blocking mechanism 104. The tool angle rotation mechanism 102 is connected to the dual-axis motion mechanism 101. The mold opening tool 103 is mounted on the tool angle rotation mechanism 102. The dual-axis motion mechanism 101 is used to adjust the position between the mold opening tool 103 and the lens mold, and the tool angle rotation mechanism 102 is used to adjust the angle between the mold opening tool 103 and the lens mold. The lens blocking mechanism 104 is located on the other side of the lens tray 4 opposite to the mold opening tool 103. The lens blocking mechanism 104 is used to limit the movement of the lens mold.

[0033] Reference Figure 12 As shown, the dual-axis motion mechanism 101 includes a horizontal linear module 105, a horizontal support plate 106, a vertical support plate 107, and a vertical linear module 108. The horizontal support plate 106 is connected to the slider of the horizontal linear module 105. The vertical support plate 107 is fixedly mounted on the horizontal support plate 106, and the vertical linear module 108 is mounted on the vertical support plate 107. The tool angle rotation mechanism 102 is connected to the slider of the vertical linear module 108. The vertical support plate 107 and the horizontal support plate 106 are arranged vertically, and a reinforcing plate 119 is provided between the vertical support plate 107 and the horizontal support plate 106.

[0034] Reference Figure 13 As shown, the tool angle rotation mechanism 102 includes a mounting base 109, a motor mounting bracket 110, a drive motor 111, and a tool holder 112. The mounting base 109 is connected to the dual-axis motion mechanism 101. The motor mounting bracket 110 is fixedly mounted on the mounting base 109. The drive motor 111 is mounted on the motor mounting bracket 110. The tool holder 112 is connected to the drive motor 111. The mold-opening tool 103 is mounted on the tool holder 112. A protective cover 120 is installed on the outer wall of the mounting base 109.

[0035] Reference Figure 14 As shown, the mold-opening cutter 103 is a rectangular blade, and both ends of the mold-opening cutter 103 in the length direction are provided with cutting edges 113. The middle position of the mold-opening cutter 103 is provided with a mounting hole 114, and a locking screw is provided in the mounting hole 114.

[0036] Reference Figure 15As shown, the lens blocking mechanism 104 includes a blocking linear module 115, a horizontal mounting plate 116, a blocking block 117, and a blocking plate mounting bracket 118. The horizontal mounting plate 116 is connected to the slider of the blocking linear module 115. One end of the blocking plate mounting bracket 118 is fixedly mounted on the horizontal mounting plate 116, and the blocking block 117 is mounted on the other end of the blocking plate mounting bracket 118. The blocking block 117 is positioned directly opposite the lens mold to be opened on the lens tray 4. The mold opening cutter 103 and the blocking block 117 are located on opposite sides of the lens mold to be opened. The end face of the blocking block 117 opposite to the lens mold to be opened has an arc-shaped groove 121, and one end of the lens mold to be opened contacts the inner wall of the arc-shaped groove 121.

[0037] The lens mold 400 is a hamburger-shaped structure with three layers stacked together. From top to bottom, it consists of mold B, lens, and mold A. The area between mold B and lens is where the mold needs to be opened. The mold opening tool 103 needs to be inserted into the gap between mold B and lens to open the mold.

[0038] The working principle of the lens mold-making unit of the present invention is as follows: After the lens tray 4 is placed into the lens mold 400 to be molded, the lens blocking mechanism 104 abuts against one side of the lens mold 400. The horizontal linear module 105 adjusts the horizontal distance between the mold opening cutter 103 and the lens mold 400, and the vertical linear module 108 adjusts the vertical position between the mold opening cutter 103 and the lens mold 400. Since the placement position of the lens mold 400 is slightly skewed, the mold opening angle of the mold opening cutter 103 is adjusted by the drive motor 111. After the position and angle are adjusted, the horizontal linear module 105 feeds the mold opening cutter 103, so that the front edge 113 of the mold opening cutter 103 driven by the horizontal linear module 105 first inserts into the gap between the B mold and the lens. As the horizontal linear module 105 drives the mold opening cutter 103 to feed, the mold opening cutter 103 gradually extends into the gap between the B mold and the lens, thereby opening the mold.

[0039] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A four-station, two-head lens mold-making device, characterized in that, include: Machine tool; A rotating platform is set on the machine base. During the intermittent 90° rotation of the rotating platform, it is divided into a lens positioning station, a lens visual edge finding station, a lens mold opening station, and a lens unloading station. The lens transfer robot is configured with 4 units. The lens transfer robot is connected to a rotating platform, and the rotating platform drives the lens transfer robot to pass through the lens positioning station, the lens visual edge finding station, the lens mold opening station and the lens unloading station in sequence. The lens transfer robot is connected to a lens tray, and the lens tray contains a lens mold to be opened. The lens positioning unit is provided at the positions of the lens positioning station, the lens visual edge finding station and the lens mold opening station, and the lens positioning unit is used to position the lens mold to be opened in the lens tray. A lens visual edge finding unit is set on a rotating platform, and the lens visual edge finding unit is used to measure the opening position and angle of the lens mold to be opened in the lens tray; A lens mold-opening unit is disposed on a rotating platform, and the lens mold-opening unit is used for opening the lens mold to be opened in the lens tray; The lens mold opening unit includes a dual-axis motion mechanism, a tool angle rotation mechanism, a mold opening tool, and a lens blocking mechanism. The tool angle rotation mechanism is connected to the dual-axis motion mechanism. The mold opening tool is mounted on the tool angle rotation mechanism. The dual-axis motion mechanism is used to adjust the position between the mold opening tool and the lens mold. The tool angle rotation mechanism is used to adjust the angle between the mold opening tool and the lens mold. The lens blocking mechanism is located on the other side of the lens tray opposite to the mold opening tool. The lens blocking mechanism is used to limit the movement of the lens mold.

2. The four-station, two-head lens mold opening device according to claim 1, characterized in that: The rotating platform includes a platform support, a rotating motor, a rotating disk, a transmission wheel, a rotating shaft, and a rotating disk connecting frame. The platform support is fixedly mounted on the machine base. The rotating motor and the transmission wheel are both mounted on the platform support. The rotating motor is connected to the rotating shaft through the transmission wheel. The rotating disk is connected to the rotating shaft through the rotating disk connecting frame. The lens transfer robot is arranged in a circular array on the rotating disk.

3. The four-station, two-head lens mold opening device according to claim 1, characterized in that: The lens transfer robot includes a robot mounting base, a clamping drive cylinder, a robot lifting plate, a mold suction nozzle, a ball spline, and a rotary drive assembly. The clamping drive cylinder is fixedly mounted on the robot mounting base, and its piston rod is connected to the robot lifting plate. The rotary drive assembly is mounted on the robot mounting base and is connected to the outer wall at the midpoint of the ball spline's axial direction. The upper end of the ball spline is connected to the robot lifting plate, and the lower end of the ball spline is connected to the mold suction nozzle. A limiting ring is provided at the lower end of the ball spline, and a buffer spring is provided between the limiting ring and the rotary support base.

4. The four-station, two-head lens mold opening device according to claim 3, characterized in that: The lens tray includes a right-angle connecting plate, a first side plate, two symmetrical second side plates, and a base plate. The upper end of the right-angle connecting plate is connected to a robotic arm, and the lower end of the right-angle connecting plate is fixedly connected to the first side plate. The first side plate and the two symmetrical second side plates are respectively connected to three adjacent sides of the base plate. The lens mold is placed on the base plate and is located within the area enclosed by the first side plate and the two symmetrical second side plates. The base plate is provided with a first through hole and a second through hole. The end of the second side plate that connects to the base plate is provided with a third through hole, and the second through hole and the third through hole are connected.

5. The four-station, two-head lens mold opening device according to claim 1, characterized in that: The lens positioning unit includes a lifting drive assembly, a positioning support frame, an electric gripper, and two symmetrically arranged gripper handles. The positioning support frame is connected to the lifting drive assembly, the electric gripper is mounted on the positioning support frame, and the two symmetrically arranged gripper handles are connected to the electric gripper. The electric gripper drives the two symmetrically arranged gripper handles to open or close.

6. The four-station, two-head lens mold opening device according to claim 5, characterized in that: The gripper is connected to two symmetrically arranged positioning rods. When the electric gripper drives the two symmetrically arranged gripper to close, the positioning rods are used to contact and position the lens mold to be inspected.

7. The four-station, two-head lens mold opening device according to claim 6, characterized in that: The upper surface of the positioning support frame is provided with a positioning mounting plate, and the positioning mounting plate is provided with a mold support block. The lifting drive component drives the mold support block to move upward to make contact with the lens mold to be tested in the lens tray.

8. The four-station, two-head lens mold opening device according to claim 1, characterized in that: The lens visual edge-finding unit includes a support base and a motion system. The motion system is mounted on the support base and has a camera and a light source. The light source provides the light required by the camera, and the camera is used for measuring the position of the lens mold opening.

9. The four-station, two-head lens mold opening device according to claim 1, characterized in that: The lens blocking mechanism includes a blocking linear module, a horizontal mounting plate, a blocking block, and a blocking plate mounting bracket. The horizontal mounting plate is connected to the slider of the blocking linear module. One end of the blocking plate mounting bracket is fixedly mounted on the horizontal mounting plate, and the blocking block is mounted on the other end of the blocking plate mounting bracket.

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