Equipment for polishing contact lens injection molding copper blank mold

Abstract

The utility model provides equipment for polishing a contact lens injection molding copper billet mold, which relates to the technical field of contact lens processing, and comprises a main machine table, a polishing base, a movable polishing group, a swing motor, a console and a PLC (Programmable Logic Controller) electric control system, a containing cavity is arranged above the main machine table, and the upper surface of the containing cavity is fixedly connected with the polishing base; a movable grinding set is arranged at the rear end of the grinding base, the movable grinding set is movably connected with a containing cavity, the movable grinding set is movably connected with a swing motor, the PLC electric control system is electrically connected with the swing motor, the PLC electric control system is electrically connected with a console, and the PLC electric control system controls a servo motor and a base motor to operate cooperatively. After the copper billet grinding and polishing device is used for grinding and polishing, the surface of the copper billet is obviously smooth, and the qualified rate of contact lens production is improved.

Description

Technical Field

[0001] This utility model relates to the field of contact lens processing technology, specifically to a device for grinding copper blank molds for contact lens injection molding. Background Technology

[0002] Contact lenses are lenses worn on the cornea of ​​the eye to correct vision or protect the eyes. Based on the hardness of the material, contact lenses are classified into three types: rigid, semi-rigid, and soft. The main manufacturing processes for contact lenses are centrifugal casting, injection molding, and turning. Injection molding is the most widely used method due to its high processing efficiency, low cost, and superior wearing comfort; currently, the vast majority of contact lenses are produced using this process.

[0003] In the production of contact lenses, two types of molds are used: a concave mold and a convex mold. In the contact lens mold-closing section (where a solution is injected between the two molds and they are pressed together), if the contact surfaces of the molds are not flat or smooth enough, it will seriously affect the product quality. The mold is made by injection molding, and its shape and appearance are determined by the copper billet mold inside the injection molding machine. The copper billet is machined by a lathe, and the surface of the machined copper billet will have turning marks, scratches, etc. If this copper billet is directly installed on the injection molding machine to produce contact lens molds, the surface of the produced mold will also show turning marks and scratches.

[0004] Uneven contact surfaces of the lens can lead to poor adhesion between the lens and the cornea, causing discomfort such as a foreign body sensation and pain. In severe cases, it can affect the optical performance of the lens, leading to blurred vision and unclear vision. Uneven tear distribution between the lens and the cornea can also affect the normal circulation of tears, thus impacting corneal health. Furthermore, it may reduce the oxygen permeability of the lens, resulting in insufficient oxygen supply to the cornea. Long-term wear may cause corneal hypoxia, leading to corneal edema and other problems.

[0005] To solve the above problems, it is urgent to develop a device for polishing copper blank molds for contact lens injection. Utility Model Content

[0006] This utility model discloses a device for polishing copper blank molds for contact lens injection molding, which solves the problems of poor adaptability to bottle size, frequent feeding, and long adjustment time in existing ampoule packaging machines.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a device for polishing copper blank molds for contact lens injection molding, used in conjunction with the copper blank, comprising a main unit, a polishing base, a movable grinding assembly, a swing motor, a control panel, and a PLC electrical control system. A hysteresis chamber is provided above the main unit, and the polishing base is fixedly connected to the upper surface of the hysteresis chamber. A movable grinding assembly is provided at the rear end of the polishing base, and a soft abrasive layer is provided at the end of the movable grinding assembly. The movable grinding assembly is movably connected to the hysteresis chamber and the swing motor. The PLC electrical control system is electrically connected to the swing motor and the control panel. The movable grinding assembly is equipped with a grinding head, and a soft abrasive layer is provided on the outer surface of the grinding head.

[0008] Preferably, the grinding base includes a base, a copper billet fixing device, and a base motor. The copper billet is connected to the base through the copper billet fixing device, and the base motor drives the copper billet fixing device to rotate.

[0009] Preferably, the mobile grinding assembly includes a mobile slide rail, a slide rail base, a connecting rod, a grinding head seat, a counterweight, and a grinding head. The mobile slide rail is fixedly connected to the hysteresis chamber, the mobile slide rail base is movably connected to the mobile slide rail, the slide rail base is movably connected to the servo unit, the slide rail base is fixedly connected to the connecting rod on the slide rail base, the connecting rod is provided with a grinding head seat, and the front end of the grinding head seat is movably connected to the grinding head.

[0010] Preferably, the connecting rod is provided with a fixing block, the fixing block is threadedly connected to the connecting rod, the fixing block fixes the position of the grinding head seat, and the installation spacing of the grinding head seat corresponds to the spacing of the grinding base.

[0011] Preferably, a counterweight is provided above the grinding head, and the grinding head and the counterweight are connected by a universal joint structure. The PLC electrical control system controls the operating status of the base motor, which drives the grinding head to rotate. The shape of the grinding head corresponds to the shape of the copper billet.

[0012] Preferably, the copper blank includes a concave die copper blank and a convex die copper blank.

[0013] Preferably, the PLC electrical control system controls the swing motor and the base motor to move in coordination.

[0014] Beneficial effects: This utility model provides a device for polishing copper blank molds for contact lens injection, which has the following beneficial effects compared with the existing technology:

[0015] This invention employs a linkage structure for lateral control of the grinding head and a base motor for rotational control of the grinding head. By adding a soft abrasive layer to the outside of the grinding head, more precise grinding of the copper billet processing mold is achieved. The PLC electrical control system controls the servo motor and the base motor to work together to ensure uniform grinding of all parts of the copper billet. After grinding and polishing using this invention, the surface of the copper billet is significantly smooth, improving the pass rate of contact lens production. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a diagram showing the structure of this utility model in use;

[0018] Figure 2 This is the front view of the present invention;

[0019] Figure 3 This is a schematic diagram of the mobile grinding unit structure of this utility model;

[0020] Figure 4 This is a side view of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of this utility model;

[0022] In the picture:

[0023] 1. Main unit; 101. Hysteresis chamber;

[0024] 2. Grinding the base, 201. Base bottom, 202. Copper billet fixing device, 203. Base motor;

[0025] 3. Mobile grinding unit, 301. Mobile slide rail, 302. Slide rail base, 303. Connecting rod, 304. Grinding head seat, 305. Counterweight, 306. Grinding head, 307. Fixed block;

[0026] 4. Swing motor; 5. Control panel; 6. PLC electrical control system. Detailed Implementation

[0027] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. The technical solutions of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0028] Please see Figure 1-5 This utility model provides a technical solution: a device for grinding copper blank molds for contact lens injection, including a main unit 1, a grinding base 2, a movable grinding assembly 3, a swing motor 4, a control panel 5, and a PLC electrical control system 6. A hysteresis chamber 101 is provided above the main unit 1. The grinding base 2 is fixedly connected to the upper surface of the hysteresis chamber 101. The movable grinding assembly 3 is provided at the rear end of the grinding base 2. The movable grinding assembly 3 is movably connected to the hysteresis chamber 101 and the swing motor 4. The PLC electrical control system 6 is electrically connected to the swing motor 4. The PLC electrical control system 6 controls the swing motor 4 to make the connecting rod 303 reciprocate. The PLC electrical control system 6 is electrically connected to the control panel 5.

[0029] In some embodiments, the grinding base 2 includes a base 201, a copper billet fixing device 202, and a base motor 203. The copper billet is connected to the base 201 through the copper billet fixing device 202. The copper billet is connected to the copper billet fixing device 202 by a threaded locking device. Clockwise rotation is for locking and counterclockwise rotation is for loosening.

[0030] In some embodiments, the mobile grinding unit 3 includes a mobile slide rail 301, a slide rail base 302, a connecting rod 303, a grinding head seat 304, a counterweight 305, and a grinding head 306. The mobile slide rail 301 is fixedly connected to the hysteresis chamber 101, the mobile slide rail 301 base is movably connected to the mobile slide rail 301, the slide rail base 302 is movably connected to the servo unit, the slide rail base 302 is fixedly connected to the connecting rod 303, the connecting rod 303 is provided with a grinding head seat 304, and the front end of the grinding head seat 304 is movably connected to the grinding head 306.

[0031] In some embodiments, a fixing block 307 is provided on the connecting rod 303. The fixing block 307 is threadedly connected to the connecting rod 303. The two fixing blocks 307 fix the position of the grinding head seat 304. The installation spacing of the grinding head seat 304 corresponds to the spacing of the grinding base 2.

[0032] In some embodiments, a counterweight 305 is provided above the grinding head 306. The grinding head 306 and the counterweight 305 are connected by a universal joint structure. The base motor 203 is electrically connected to the PLC control system 6. The base motor 203 drives the grinding head 306 to rotate. The shape of the grinding head 306 corresponds to the shape of the copper billet.

[0033] In some embodiments, the outer surface of the grinding head 306 is provided with a soft abrasive layer, which is formed by using a sponge, eyeglass cloth, cleaning agent and abrasive paste.

[0034] In some embodiments, the PLC control system 6 controls the servo motor and the base motor 203 to move in coordination. The PLC control system 6 uses a Siemens 200smart PLC, and the PLC control system 6 can communicate with the swing motor 4 and the base motor 203 via RS-485.

[0035] In some embodiments, the control panel 5 uses a Kunlun Tongtai touch screen and is equipped with five buttons. Button 1 is a self-locking button for powering the device; pressing it will start powering the device. Button 2 is an emergency stop button; pressing it in case of an abnormal situation will instantly cut off the power to the device. Buttons 3-5 are self-reset buttons; pressing them will cause the corresponding base motor 203 to start rotating in conjunction with the swing motor 4.

[0036] In some embodiments, the yield rate of contact lenses before polishing is 54%, and the yield rate increases to 78% after grinding and polishing the copper billet.

[0037] Example 1: Connect the power supply to the device, press the power button on the control panel 5 to power on the device, input the rotation speed of the swing motor 4 and the selected base motor 203 speed (the rotation speed is controlled by percentage) on the control panel 5, and input the single grinding time. Fix the copper blank to be ground on the grinding base 2, stuff excess sponge into the grinding head 306 and keep the sponge basically flat, wrap the grinding head 306 with a spectacle cloth, and then tighten it with a rubber band. Spray the cleaning agent onto the spectacle cloth of the grinding head 306 to make it wet, remove the excess spectacle cloth, squeeze the grinding paste onto the spectacle cloth and cover it on the copper blank, press the grinding head 306 on the copper blank, press the corresponding motor switch to start the device to work, and the PLC electrical control system 6 controls the swing motor 4 and the base motor 203 to rotate simultaneously. Remove the ground copper blank and use a microscope to check whether the surface is smooth.

[0038] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments. For those skilled in the art to which the present invention pertains, several simple deductions or substitutions can be made without departing from the present invention, and all such deductions or substitutions should be considered as falling within the scope of patent protection determined by the submitted claims.

Claims

1. A device for polishing copper blank molds for contact lens injection molding, used in conjunction with copper blanks, characterized in that, The device includes a main unit, a grinding base, a movable grinding assembly, a swing motor, a control panel, and a PLC electrical control system. A hysteresis chamber is located above the main unit. The grinding base is fixedly connected to the upper surface of the hysteresis chamber. A movable grinding assembly is located at the rear end of the grinding base. A soft grinding layer is provided at the end of the movable grinding assembly. The movable grinding assembly is movably connected to the hysteresis chamber and the swing motor. The PLC electrical control system is electrically connected to the swing motor and the control panel. The movable grinding assembly has a grinding head, and a soft grinding layer is provided on the outer surface of the grinding head.

2. The equipment for polishing copper blank molds for contact lens injection as described in claim 1, characterized in that, The grinding base includes a base, a copper billet fixing device, and a base motor. The copper billet is connected to the base through the copper billet fixing device, and the base motor drives the copper billet fixing device to rotate.

3. The equipment for polishing copper blank molds for contact lens injection as described in claim 2, characterized in that, The mobile grinding assembly includes a mobile slide rail, a slide rail base, a connecting rod, a grinding head seat, a counterweight, and a grinding head. The mobile slide rail is fixedly connected to the hysteresis chamber, the mobile slide rail base is movably connected to the mobile slide rail, the slide rail base is movably connected to the private server stand, the slide rail base is fixedly connected to the connecting rod on the slide rail base, the connecting rod is provided with a grinding head seat, and the grinding head is movably connected to the front end of the grinding head seat.

4. The equipment for polishing copper blank molds for contact lens injection as described in claim 3, characterized in that, The connecting rod is provided with a fixing block, which is threadedly connected to the connecting rod. The fixing block fixes the position of the grinding head seat, and the installation spacing of the grinding head seat corresponds to the spacing of the grinding base.

5. The equipment for polishing copper blank molds for contact lens injection as described in claim 4, characterized in that, A counterweight is provided above the grinding head, and the grinding head and the counterweight are connected by a universal joint structure. The PLC electrical control system controls the operation of the base motor, which drives the grinding head to rotate. The shape of the grinding head corresponds to the shape of the copper billet.

6. The equipment for polishing copper blank molds for contact lens injection as described in claim 5, characterized in that, The copper billet includes a concave die copper billet and a convex die copper billet.

7. The equipment for polishing copper blank molds for contact lens injection as described in claim 6, characterized in that, The PLC electrical control system controls the swing motor and the base motor to move in coordination.

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