A lens wiping head and a lens wiping device

Abstract

The application provides a lens wiping head and a lens wiping device, and relates to the technical field of lens manufacturing. The lens wiping head comprises a wiping head base, a plurality of wiping members are arranged on the wiping head base, and the height of the wiping members can be adjusted according to the pressure of the lens. After the lens is placed, the height of the wiping members is adjusted according to the pressure of the lens to form a lens wiping head matched with the size and the curvature of the lens, so that the complete contact between the lens wiping head and the lens is ensured, and the wiping requirement of various lenses is met.

Description

Technical Field

[0001] This invention relates to the field of lens manufacturing technology, and in particular to a lens wiping head and lens wiping device. Background Technology

[0002] Lenses require multiple wiping and cleaning processes during manufacturing. For example: wiping and cleaning residual polishing fluid, adhesive, and protective materials after lens polishing; wiping and cleaning edge grinding oil and glass powder after lens edge grinding; wiping and cleaning fingerprints and other deposits before lens coating; and wiping and cleaning dust and other adhering substances after lens manufacturing is completed.

[0003] In existing technologies, fixed-size lens cleaning heads are mainly used in conjunction with motors and other drive mechanisms to achieve automatic cleaning of lenses during the manufacturing process. However, in reality, different lenses have different shapes, sizes, and curvatures. Obviously, fixed-size lens cleaning heads cannot meet the cleaning needs of all lenses. Summary of the Invention

[0004] The present invention aims to provide a lens cleaning device in order to at least partially solve at least one of the above-mentioned technical problems.

[0005] To solve the above-mentioned technical problems, in a first aspect, the present invention provides a lens wiping head and a wiping head base, wherein the wiping head base is provided with a plurality of wiping elements whose height can be adjusted according to the pressure of the lens.

[0006] According to a preferred embodiment of the present invention, the wiping member includes: a wiping rod penetrating the wiping head base, a wiping component being provided on the top of the wiping rod at one end of the wiping head base, and an elastic member being sleeved on the wiping rod between the wiping head base and the wiping component.

[0007] According to a preferred embodiment of the present invention, the wiping component includes: a height-adjustable wiping rod disposed on the wiping head base, the top of the wiping rod being provided with a pressure detection unit, and the controller fixing the height of the wiping rod according to the detection value of the pressure detection unit.

[0008] To solve the above-mentioned technical problems, in a second aspect, the present invention provides a lens wiping device, including a lens wiping head as described in any one of the above claims, wherein the lens wiping head is disposed on a drive mechanism.

[0009] According to a preferred embodiment of the present invention, a wiping cloth structure is further provided between the driving mechanism and the lens wiping head. The wiping cloth structure includes: a base and a bracket vertically fixed on the base. The wiping head base is fixed to the top of the bracket. A cleanroom cloth roll is provided on the side wall of the bracket. A cleanroom cloth guide mechanism that can slide along the bracket is provided on the side wall of the bracket above the cleanroom cloth roll.

[0010] According to a preferred embodiment of the present invention, the cleanroom wipe guiding mechanism includes: a lifting mechanism disposed on the side wall of the support and a guide roller fixed to the top of the lifting mechanism and parallel to the wiping head base, the guide roller including a first guide roller and a second guide roller respectively located on both sides of the wiping head base.

[0011] According to a preferred embodiment of the present invention, the wiping cloth structure is further provided with a cloth pulling mechanism, the cloth pulling mechanism including: a first gear and a second gear coaxially disposed on the base, the first gear being connected to a first drive mechanism, a third gear meshing with the second gear being disposed on the bracket, and the second gear and the third gear having built-in one-way bearings;

[0012] The cleanroom cloth starts from the cleanroom cloth roll, passes through the first guide roller and the second guide roller, and then exits between the second gear and the third gear.

[0013] According to a preferred embodiment of the present invention, the first driving mechanism includes: a rack meshing with a first gear, and a driving member for driving the rack.

[0014] According to a preferred embodiment of the present invention, the driving mechanism includes: a first lifting mechanism, a rotating mechanism disposed on the upper part of the first lifting mechanism, and the wiping head base fixed on the rotating mechanism.

[0015] According to a preferred embodiment of the present invention, the upper part of the wiping head is further provided with a lens clamp, the lens clamp comprising: a mounting base, a first clamping arm and a second clamping arm symmetrically disposed on the mounting base.

[0016] In summary, the lens wiping head and lens wiping device of the present invention have multiple wiping elements on the base of the wiping head, the height of which can be adjusted according to the lens pressure. After the lens is placed on it, the height of the wiping elements is adjusted according to the pressure to form a lens wiping head that matches the size and curvature of the lens, ensuring complete contact between the lens wiping head and the lens, thereby meeting the wiping needs of various lenses. Attached Figure Description

[0017] Figure 1a This is a perspective view of a lens cleaning head provided in an embodiment of the present invention;

[0018] Figure 1b It is along Figure 1a Cross-sectional view of line AA in the middle;

[0019] Figure 1c yes Figure 1a A bottom view;

[0020] Figure 2 This is a left-view perspective perspective view of a lens cleaning device provided in an embodiment of the present invention;

[0021] Figure 3 This is a right-view perspective perspective view of a lens wiping device provided in an embodiment of the present invention;

[0022] Figure 4 This is a left view of a lens wiping device provided in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the fabric threading of a dust-free cloth in a lens cleaning device provided in an embodiment of the present invention;

[0024] Wherein: 10-wiping head base, 110-wiping bar, 111-wiping bar base, 112-wiping component, 113-elastic component, 21-first lifting mechanism, 22-rotating mechanism, 30-mounting seat, 31-first clamping arm, 32-second clamping arm, 41-base, 42-bracket, 43-cleanroom wipe roll, 440-lifting mechanism, 441-first guide roller, 442-second guide roller, 51-first gear, 52-second gear, 53-third gear, 54-rack, 55-driving component. Detailed Implementation

[0025] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be 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 configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the invention.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0027] Example 1

[0028] Please see Figures 1a-1cThis invention provides a lens cleaning head, comprising: a cleaning head base 10, on which multiple cleaning elements are provided, the height of which can be adjusted according to the pressure on the lens. After a lens is placed on it, the cleaning elements adjust their height according to the applied pressure to form a lens cleaning head that matches the size and curvature of the lens, ensuring complete contact between the lens cleaning head and the lens, thereby meeting the cleaning needs of various lenses. The size of the lens can include its shape and dimensions, such as the diameter of a circular lens, the major and semi-major axes of an elliptical lens, the length and width of a square lens, etc. Of course, the lens shape can also be irregular.

[0029] In one example, the wiping element may include a wiping rod 110 penetrating the wiping head base 10. Specifically, a through hole can be formed in the wiping head base 10, and the size of the through hole is larger than the size of the wiping rod 110, so that the wiping rod 110 can slide freely within the through hole after being inserted, thereby changing the relative height of each wiping rod 110. Furthermore, a wiping rod base 111, larger than the through hole, can be provided at the other end of the wiping rod 110 located at the wiping head base 10. A wiping component 112 is provided at the top of one end of the wiping rod 110, and an elastic element 113 is sleeved on the wiping rod 110 between the wiping head base 10 and the wiping component 112. When not in contact with the lens, each elastic element 113 is in a free state, and each wiping rod base 111 is in contact with the wiping head base 10, thereby ensuring that the height of each wiping element is the same, which is the highest height of the wiping rod 110 at the wiping head base 10. Figure 1a and 1b When in contact with the lens, the wiping component 112, due to the pressure from the lens, pushes the wiping rod 110 to the other end of the wiping head base 10, and the elastic element 113 compresses, exerting a reaction force on the lens. When the lens pressure and the pressure of the elastic element 113 are balanced, the position of the wiping rod 110 is fixed. Since the pressure of the lens on each wiping component 112 is related to the size and curvature of the lens, when the lens is in a balanced state, such as... Figure 1a and 1b The lens cleaning head of this invention is integrally formed to perfectly match the size and curvature of the lens. Specifically, the elastic element 113 can be a spring, and the wiping component 112 can be formed by wrapping the wiping material around the top of the wiping rod 110. The wiping material can be a material with a certain elasticity and low hardness, such as foam or soft silicone. The wiping component can be as follows: Figure 1c They are arranged in an array on the wiping head base 10. Of course, they can also be arranged in any shape. This invention does not make any specific limitation.

[0030] In another example, the wiping device includes: a height-adjustable wiping rod 110 disposed on the wiping head base 10, with a pressure detection unit at the top of the wiping rod 110, and the controller fixing the height of the wiping rod 110 according to the detection value of the pressure detection unit. For example, the pressure detection unit can be a pressure sensor, which can pre-store the correspondence between different pressure values ​​and the height of the wiping rod 110. The controller can determine and adjust the height of each wiping rod 110 based on the pressure value by looking up the correspondence, forming a lens wiping head that matches the lens size and curvature, thus achieving intelligent adjustment of the wiping head. Specifically, in the initial state, all wiping rods 110 are at the same height (e.g., the initial height). When a lens is placed on a wiping rod 110, the wiping rod 110 that detects pressure corresponds to the lens size. The height of the wiping rod 110 that detects pressure can be increased, or the height of the wiping rod 110 that does not detect pressure can be decreased, to form a lens wiping head corresponding to the lens size. Simultaneously, the magnitude of the detected pressure can reflect the curvature of the lens; for example, the higher the pressure, the lower the height of the wiping rod 110, and the lower the pressure, the higher the height of the wiping rod 110. This creates a curved surface for the lens wiping head that matches the curvature of the lens. The wiping rod 110 can be configured as follows: Figure 1a The wiping rod 110 is threaded through the wiping head base 10, and a nut matching the thread is fitted at the other end of the wiping rod 110 located at the wiping head base 10. The controller controls the robotic arm to rotate the nut to the designated position of the wiping rod 110 according to the detected pressure value, thereby adjusting and fixing the wiping rod 110. Alternatively, the wiping rod 110 may include multiple wiping rod units that are nested end-to-end and slidable, wherein: the size of the preceding wiping rod unit is smaller than the size of the following wiping rod unit, and the preceding wiping rod unit can slide and be fixed within the following wiping rod unit, and each wiping rod unit has the same length. In this case, the controller determines the target height of each wiping rod 110 by looking up the corresponding relationship based on the detected pressure value, and then calculates the number of wiping rod units that need to be compressed or extended based on the current height of the wiping rod 110, the target height, and the length of each wiping rod unit. The controller controls the robotic arm to press the wiping rod 110 so that the corresponding number of wiping rod units slide and nest into the preceding wiping rod unit, or controls the robotic arm to stretch the wiping rod 110 so that the corresponding number of wiping rod units slide and extend from within the preceding wiping rod unit; thereby adjusting and fixing the wiping rod 110.

[0031] In addition, the wiping component can also be made using existing universal grippers.

[0032] Example 2

[0033] refer to Figures 2-5Embodiment 2 of the present invention provides a lens wiping device, comprising: a lens wiping head as described in any one of Embodiment 1, wherein the lens wiping head is disposed on a driving mechanism, and the driving mechanism drives the lens wiping head to wipe the lens. The driving mechanism can be a linear drive unit, such as: a cylinder, lead screw, synchronous belt, electric push rod, electric cylinder, linear motor, hydraulic cylinder, crank-slider mechanism, eccentric wheel mechanism, grooved wheel mechanism, etc. The linear drive unit drives the lens wiping head to perform linear reciprocating motion, realizing back-and-forth or left-and-right wiping of the lens.

[0034] In a preferred embodiment, a drive mechanism drives the lens wiping head to rotate and wipe the lens, improving the wiping effect. Simultaneously, the height of the lens wiping head can be adjusted to ensure close contact between the wiping head and the lens, further enhancing the wiping effect. The drive mechanism includes: a first lifting mechanism 21, a rotating mechanism 22 located above the first lifting mechanism 21, and a wiping head base 10 fixed to the rotating mechanism 22. Furthermore, a lens clamp can be provided above the lens wiping head to hold the lens. The first lifting mechanism 21 is controlled to rise, causing the lens wiping head to contact the lens. The height of the wiping components is adjusted according to the pressure of each component, forming a lens wiping head that matches the size and curvature of the lens. Subsequently, the rotating mechanism 22 drives the lens wiping head to rotate, completing the wiping of the lens.

[0035] The first lifting mechanism 21 can be a lifting cylinder, a lead screw lifting mechanism, a gear lifting mechanism, etc. The rotating mechanism 22 can be a rotary cylinder, a motor-driven rotary table, etc. The lens clamp can include: a mounting base 30, and a first clamping arm 31 and a second clamping arm 32 symmetrically arranged on the mounting base 30. Optionally, the first clamping arm 31 and the second clamping arm 32 can slide along one edge of the mounting base 30. When the first clamping arm 31 and the second clamping arm 32 slide towards each other, the lens can be clamped; when the first clamping arm 31 and the second clamping arm 32 slide away from each other, the lens can be released. Specifically, a slider can be provided on the mounting base 30, and a slide rail that cooperates with the slider can be provided on the first clamping arm 31 and the second clamping arm 32; or, a slide rail can be provided on the mounting base 30, and a slider that cooperates with the slide rail can be provided on the first clamping arm 31 and the second clamping arm 32. Optionally, the mounting base 30 can be configured with a gripper cylinder body, and the first gripping arm 31 and the second gripping arm 32 can be set on the mounting base 30 as grippers to form a gripper cylinder structure. By controlling the gripper cylinder body, the first gripping arm 31 and the second gripping arm 32 can be opened and closed to complete the gripping of the lens.

[0036] In the above example, the lens is wiped directly with the lens wiping head. After wiping for a period of time, a clean wiping head needs to be replaced, which is both wasteful and inconvenient. Therefore, in a preferred example, to avoid replacing the wiping head, a lint-free cloth can be placed between the lens wiping head and the lens, and the lens wiping head drives the lint-free cloth to wipe the lens. A wiping cloth structure can be provided on the rotating mechanism 22, wherein: the wiping cloth structure includes: a base 41 and a bracket 42 vertically fixed to the base 41; the wiping head base 10 is fixed to the top of the bracket 42; a lint-free cloth roll 43 is provided on the side wall of the bracket 42, and the lint-free cloth roll 43 is located below the wiping head base 10 and parallel to the wiping head base 10, so as to ensure that the lint-free cloth on the lint-free cloth roll 43 can be wound onto the lens wiping head. Furthermore, a lint-free cloth guide mechanism that can slide along the bracket 42 is also provided on the side wall of the bracket 42 above the lint-free cloth roll 43. The cleanroom wipe guiding mechanism includes a lifting mechanism 440 located on the side wall of the support 42 and a guide roller fixed to the top of the lifting mechanism 440 parallel to the wiping head base 10. The guide roller guides the cleanroom wipe on the cleanroom wipe roll 43 to wrap around the lens wiping head. The lifting mechanism 440 can be a lifting cylinder, and the guide roller can be provided only on one side of the wiping head base 10 to guide the cleanroom wipe as it enters or leaves the lens wiping head. Preferably, as... Figure 3 The guide rollers include a first guide roller 441 and a second guide roller 442 located on both sides of the wiping head base 10. The first guide roller 441 guides the cleanroom cloth as it enters the lens wiping head, and the second guide roller 442 guides the cleanroom cloth as it leaves the lens wiping head. The first guide roller 441 and the second guide roller 442 can be horizontally fixed to a fixed frame, while the fixed frame is vertically fixed to a lifting mechanism 440, which is fixed to a bracket 42.

[0037] Furthermore, to automate the cloth-pulling process during wiping, a cloth-pulling mechanism can be incorporated into the cloth-pulling structure. For example... Figure 2 and 3 The fabric-pulling mechanism includes: a first gear 51 and a second gear 52 coaxially mounted on a base 41, the first gear 51 being connected to a first drive mechanism; and a third gear 53 meshing with the second gear 52 mounted on a bracket 42. The second gear 52 and the third gear 53 have built-in one-way bearings to ensure that the braking directions of the second gear 52 and the third gear 53 are opposite. For example, the second gear 52 brakes when rotating clockwise and does not brake when rotating counterclockwise; the third gear 53 does not brake when rotating clockwise and brakes when rotating counterclockwise. This ensures that the cleanroom cloth is pulled out during the meshing of the second gear 52 and the third gear 53. Regarding the fabric-pulling method of the cleanroom cloth, such as... Figure 5The cleanroom wipe starts from the cleanroom wipe roll 43, passes through the first guide roller 441 and the second guide roller 442, and then exits between the second gear 52 and the third gear 53. Thus, the first drive mechanism drives the first gear 51 and the second gear 52 to rotate, and the meshing of the second gear 52 and the third gear 53 pulls the cleanroom wipe to complete the wipe changing action. Optionally, such as... Figure 5 The first driving mechanism may include: a rack 54 meshing with the first gear 51, and a driving component 55 driving the rack 54. The driving component 55 may be a cylinder, a motor, or the like.

[0038] The following is based on Figure 2 Taking a lens cleaning device as an example, the lens cleaning process of the present invention will be described. The lens cleaning process includes:

[0039] S1, Initial State Debugging Phase

[0040] In the initial state, the adjusting lifting mechanism 440 is in the raised position, such as... Figure 5 The first guide roller 441 and the second guide roller 442 are positioned above the lens wiping head, and a cleanroom cloth is threaded through them. Specifically, the cleanroom cloth is started from the cleanroom cloth roll 43, passes through the first guide roller 441, covers the lens wiping head, and passes through the second guide roller 442 between the second gear 52 and the third gear 53.

[0041] S2, Wiping Stage

[0042] After the lens clamp holds the lens, the first lifting mechanism 21 is driven to rise, causing the lens wiping head to bring the lint-free cloth into contact with the lens surface. The lens wiping head adaptively adjusts the height of each wiping component according to the pressure on the wiping components, forming a lens wiping head that matches the size and curvature of the lens to ensure complete contact between the lint-free cloth and the lens. At this time, the rotating mechanism 22 rotates by a predetermined angle (e.g., 180 degrees) to complete the wiping action.

[0043] S3, Reset Phase

[0044] The first lifting mechanism 21 is reset, and the lens wiping head is lowered again below the first guide roller 441 and the second guide roller 442, causing the lint-free cloth to disengage from the lens wiping head. The rotating mechanism 22 is then reset.

[0045] S4, Fabric Change Stage

[0046] The drive unit 55 moves the rack 54, which in turn drives the first gear 51 and the second gear 52 to rotate. The meshing of the second gear 52 and the third gear 53 pulls the cleanroom cloth, completing the cloth changing action. Subsequently, the drive unit 55 drives the rack 54 to reset.

[0047] S5, Replace Lens

[0048] Control the lens clamp to lower the current lens and pick up the new lens.

[0049] Repeat steps S2 to S5 to complete the wiping of each lens and the automatic replacement of the lint-free cloth.

[0050] In summary, the lens cleaning device of the present invention has at least the following advantages compared with the prior art:

[0051] 1. Multiple wiping components with adjustable heights based on lens pressure are installed on the wiping head base 10. After the lens is placed on it, the wiping components adjust their height according to the pressure to form a lens wiping head that matches the size and curvature of the lens, ensuring complete contact between the lens wiping head and the lens, thereby meeting the wiping needs of various lenses.

[0052] 2. A first lifting mechanism 21 is provided in the drive mechanism, and a rotating mechanism 22 is provided on the upper part of the first lifting mechanism 21. The wiping head base 10 is fixed on the rotating mechanism 22. This enables the lens to be rotated and wiped, and the height of the lens wiping head can also be adjusted so that the lens wiping head is in close contact with the lens, thereby improving the wiping effect.

[0053] 3. A wiping cloth structure and a cloth pulling mechanism are set on the rotating mechanism 22 to complete the automatic pulling and replacement of the lint-free cloth without replacing the entire wiping head. This has the advantages of convenient operation and saving wiping heads.

[0054] 4. A lens clamp is installed on the upper part of the lens wiping head, which automatically picks up the lens during the wiping process, improving wiping efficiency and saving manpower.

[0055] It should be clarified that the present invention is not limited to the specific structures and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known structures are omitted here. In the above embodiments, several specific structures are described and shown as examples. However, the lens cleaning device of the present invention is not limited to the specific structures described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the installation positions between structures, after understanding the spirit of the present invention.

[0056] The above description is merely a specific embodiment of the present invention. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the structures, modules, and units described above can be referred to the corresponding processes in the foregoing embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. A lens cleaning device, characterized in that, include: A lens cleaning head, wherein the lens cleaning head is mounted on a drive mechanism; The lens cleaning head includes: a cleaning head base, on which multiple cleaning components are provided, the height of which can be adjusted according to the lens pressure; each cleaning component adjusts its own height according to the lens pressure it receives, so that all cleaning components together form a lens cleaning head that matches the size and curvature of the lens; The driving mechanism includes: a first lifting mechanism, a rotating mechanism disposed on the upper part of the first lifting mechanism, a bracket disposed on the rotating mechanism, and the wiping head base fixed to the top of the bracket; a cleanroom cloth roll is disposed on the side wall of the bracket, and the cleanroom cloth on the cleanroom cloth roll can be wound onto the lens wiping head; a cleanroom cloth guide mechanism is disposed on the side wall of the bracket above the cleanroom cloth roll, and the cleanroom cloth guide mechanism includes a lifting mechanism disposed on the side wall of the bracket and a guide roller fixed to the top of the lifting mechanism parallel to the wiping head base.

2. The lens wiping device according to claim 1, characterized in that, Each of the wiping components includes: a wiping rod that extends through the wiping head base and can slide freely, a wiping component being provided on the top of the wiping rod at one end of the wiping head base, and an elastic element being sleeved on the wiping rod between the wiping head base and the wiping component.

3. The lens wiping device according to claim 1, characterized in that, Each of the wiping components includes: a height-adjustable wiping rod disposed on the base of the wiping head, the top of the wiping rod being provided with a pressure detection unit, and the controller determining and fixing the height of the wiping rod by finding the correspondence between different detection values ​​and the height of the wiping rod based on the detection value of the pressure detection unit.

4. The lens wiping device according to claim 1, characterized in that, The rotating mechanism is provided with a base, and the bracket is vertically fixed on the base.

5. The lens wiping device according to claim 1, characterized in that, The guide rollers include a first guide roller and a second guide roller located on both sides of the wiping head base.

6. The lens wiping device according to claim 5, characterized in that, Also includes: A first gear and a second gear are coaxially mounted on the base. The first gear is connected to a first drive mechanism. A third gear that meshes with the second gear is mounted on the bracket. The second gear and the third gear have built-in one-way bearings. The cleanroom cloth starts from the cleanroom cloth roll, passes through the first guide roller and the second guide roller, and then exits between the second gear and the third gear.

7. The lens wiping device according to claim 6, characterized in that, The first drive mechanism includes: a rack that meshes with a first gear, and a drive member that drives the rack.

8. The lens wiping device according to claim 1, characterized in that, The upper part of the lens cleaning head is also provided with a lens clamp, which includes: a mounting base, a first clamping arm and a second clamping arm symmetrically arranged on the mounting base.

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