Application device and method for cleaning an abrasive surface in a machine for abrading an ophthalmic lens
阅读说明:本技术 清洁在用于研磨眼科镜片的机器中的研磨表面的施加装置和方法 (Application device and method for cleaning an abrasive surface in a machine for abrading an ophthalmic lens ) 是由 J-E·勒帕热 S·皮诺 于 2018-06-29 设计创作,主要内容包括:本发明涉及一种施加装置(10),所述施加装置被配置为清洁在用于研磨眼科镜片的机器中的研磨表面(113),所述施加装置包括:-中心部分(12),所述中心部分具有以便将所述施加装置安装在所述研磨机中;以及-周边边缘(16),所述周边边缘被配置为接纳施加表面,所述施加表面与所述研磨轮的研磨表面配合以便清洁所述研磨表面。本发明还涉及一种清洁套件,所述清洁套件包括施加装置以及清洁溶液,并且涉及一种用于清洁研磨表面的方法。(The invention relates to an application device (10) configured to clean an abrasive surface (113) in a machine for abrading an ophthalmic lens, comprising: -a central portion (12) having means for mounting the application device in the grinding mill; and-a peripheral edge (16) configured to receive an application surface cooperating with an abrasive surface of the abrasive wheel for cleaning the abrasive surface. The invention also relates to a cleaning kit comprising an application device and a cleaning solution, and to a method for cleaning an abrasive surface.)
1. An application device (10) configured to clean an abrasive surface (113) in a machine (100) for abrading an ophthalmic lens, the machine comprising at least:
-a grinding wheel (112) having a grinding surface (113) and being rotatably mounted in the machine about a first axis (118); and
-a gripping member (104, 106) configured to receive an ophthalmic lens; and is
The application device comprises:
-a central portion (12) having coupling means (14) configured to cooperate with the gripping member for mounting the application device in the grinding machine; and
-a peripheral edge (16) configured to receive an application surface cooperating with an abrasive surface of the abrasive wheel for cleaning the abrasive surface.
2. The application device (10) according to claim 1, the application surface being designed to apply a cleaning solution on the abrasive surface, wherein the application device further comprises:
-a reservoir (22) configured to contain a quantity of cleaning solution; and
-a delivery means configured to deliver a quantity of cleaning solution to an application surface of the application device when the cleaning solution is contained in the reservoir and when the application surface is mounted on the peripheral edge.
3. The applicator (10) of claim 2, wherein the reservoir is squeezable such that applying pressure to a portion of the applicator directs a quantity of cleaning solution to the application surface of the applicator when contained in the reservoir and when the application surface is mounted on the peripheral edge.
4. The application device (10) according to claim 2 or 3, wherein the application device further comprises a transport channel (30) arranged in a peripheral edge (16) of the application device.
5. The applicator (10) according to any one of claims 1 to 4, wherein the applicator comprises a disc (18) mounted on the peripheral edge so as to constitute an application surface.
6. The applicator (10) according to claim 5, wherein the disc is made of felt.
7. The applicator (10) according to claim 5 or 6, wherein the Young's modulus of the disc is smaller than the Young's modulus of the central portion.
8. The application device (10) according to any one of claims 5 to 7, the grinding surface of the grinding wheel (114) having a peripheral groove (115), the application surface of the application device having a rib (21) configured to cooperate with the peripheral groove of the grinding surface.
9. A cleaning kit comprising:
-an application device (10) according to any one of claims 1 to 8; and
-a cleaning solution configured to be provided on the application surface of the application device when the application surface is mounted on the peripheral edge.
10. A method of cleaning an abrasive surface in a machine for abrading an ophthalmic lens, the machine comprising at least:
-a grinding wheel (112) having a grinding surface (113) and being rotatably mounted in the machine about a first axis (118);
-a gripping member (104, 106) configured to receive an ophthalmic lens; and
-control means designed to control at least the rotation of the grinding wheel about the first axis and the relative displacement between the gripping member and the grinding wheel;
the method comprises the following steps:
-providing an application device (10) having an application surface dimensioned to match the grinding surface;
-mounting the application device onto the gripping member; and
-actuating the control means such that the abrasive wheel rotates about the first axis and the application surface is in contact with the abrasive surface in order to clean the abrasive surface.
11. The method of claim 10, the control means being further designed to control the rotation of the assembly of the gripping member and the ophthalmic lens about a second axis when the ophthalmic lens is received in the gripping member, the method further comprising actuating the control means so that the assembly of the gripping member and the application device rotates about the second axis in order to clean the abrasive surface.
12. The method of claim 10 or 11, the application surface comprising a cleaning solution, wherein the method further comprises actuating the control means such that the application surface and the abrasive surface are in contact prior to providing the cleaning solution on the application surface.
13. The method of any one of claims 10 to 12, further comprising injecting a rinsing liquid into the machine after cleaning the abrasive surface in order to rinse the machine.
Technical Field
The present application relates to an applicator for cleaning and refreshing an abrasive surface. The device is particularly suitable for cleaning and refreshing the surface of an abrasive wheel mounted in a machine configured to abrade an ophthalmic lens. The invention also relates to a cleaning kit comprising such an application device, and a cleaning solution, and to a method for cleaning and refreshing an abrasive surface.
Background
Grinders are used in the ophthalmic field to edging, beveling, grooving, and polishing ophthalmic lenses.
Edging comprises adapting the substantially circular profile of the ophthalmic lens to the profile of a frame designed to receive said ophthalmic lens. Thus, the edging operation involves removing a portion of the material from the periphery of the lens.
The bevelling of the ophthalmic lens, performed after edging, enables the section of the peripheral edge of the lens to be adapted so that said lens fits into the groove normally contained by the spectacle frame. Thus, beveling of the lens involves providing a generally triangular bevel or rib at the peripheral edge of the lens.
The grooving operation of the ophthalmic lens can also be performed on the lens after the lens has been edged. This enables the cross section of the peripheral edge of the lens to be adapted so that the lens can be mounted in certain types of frames.
The polishing operation of an ophthalmic lens involves smoothing and shining the surface of the ophthalmic lens by rubbing it.
Most often, these different operations are performed on a single grinding machine fitted with a grinding train. Such machines are known and commercially available.
This type of mill typically comprises: one or several diamond grinding wheels, which are typically coupled together to form a grinding train rotatably mounted about a first axis; a gripping member designed to receive an ophthalmic lens to be machined so as to rotate it about a second axis; and a control device. The control means are designed to control the rotation of the grinding wheel and the holding member holding the lens around the first axis and the second axis, respectively; furthermore, the control means controls the relative displacement between the lens and the grinding wheel.
Such a machine and its operation are described more specifically in french patent No. 2543039 in the name of the applicant.
The known grinding mills, more particularly the grinding mill described in said patent, operate in a very satisfactory manner. However, they do not provide a satisfactory solution to the problem of wear of grinding wheels, in particular to the problem of wear of the grinding surface of the grinding wheel.
Diamond grinding wheels are commonly used on such grinders. These diamond grinding wheels are usually composed of a circular disc whose periphery is covered with a layer composed of a binder to which fine diamond particles are bonded. During repeated machining operations of the lens by the grinder, the grinding wheel surface becomes progressively dulled and loses its grinding power. The loss is due to progressive wear of the diamond particles in contact with the lens to be machined. The loss may also be due to oxidation of the particles. It is apparent that although the phenomenon is described for diamond wheels, it is also true for other types of wheels.
There is manual renewal of the grinding wheel surface. When the operator considers the wheel to be dull, he opens or removes the protective cover of the grinding machine and renews it with a bar made of alumina or silicon carbide or a material of similar hardness, which the operator manually moves over the surface of the wheel. There are a number of disadvantages associated with this process:
first, when the regrinding operation is repeated frequently, or when the operator performs said operation too roughly, premature wear of the diamond surface can result. Even if the grinding wheel is still operational, the operator may determine that the machining is not proceeding fast enough and decide to renew the grinding wheel surface prematurely. This is a major drawback in view of the high cost of the grinding wheel;
second, although the operator may have a lot of experience, the manual process can cause the periphery of the grinding wheel to deform. In the case of a trimming wheel having a flat peripheral section, the alumina or carbide rod must be held precisely parallel to the edge of the wheel to avoid distortion of its profile. It is very difficult to perform the operation in a satisfactory manner. In the case of bevel or grooved wheels with protruding or recessed profiles, manual regrinding using aluminum oxide or silicon carbide rods can lead to significant distortion of the machined profile of the grinding wheel. Thus, after regrinding, the wheel no longer has the right shape to ensure a completely satisfactory machining;
thirdly, since manual renewal requires the operator to open the grinding machine, in particular to remove or at least open its protective cover, this may cause elements to protrude in the space around the machine, which is not satisfactory for the cleaning of the space around the grinding machine and may jeopardize the safety of the operator in the area of the machine.
Accordingly, there remains a need to provide a means of cleaning and refreshing the abrasive surface in a grinding machine in an efficient, safe and clean manner.
Disclosure of Invention
It is an object of the present invention to overcome at least one of the disadvantages of the prior art.
Cleaning of the abrasive surface is meant to include any operation that removes substances disposed on the abrasive surface that affect the efficiency of the abrading.
To this end, the invention provides an application device comprising a central portion having coupling means configured to cooperate with a clamping member of the grinder for mounting the application device in the grinder, the application device further comprising a peripheral edge configured to receive an application surface cooperating with an abrasive surface of the abrasive wheel for cleaning the abrasive surface.
Thus, the abrasive surface can be cleaned and/or renewed with the protective cover of the machine closed. It is also easy for the operator to use. Furthermore, the use of an application surface does not risk causing premature wear of the abrasive surface of the abrasive wheel to be cleaned.
Other optional and non-limiting features of the applicator are as follows:
-the application surface is designed to apply a cleaning solution on the abrasive surface;
-the application device comprises a reservoir configured to contain a quantity of cleaning solution, and a delivery means configured to deliver the cleaning solution to the application surface;
-the reservoir is squeezable;
-the application device comprises a transport channel arranged in a peripheral edge of the application device;
-the application device comprises a disc mounted on the peripheral edge so as to constitute an application surface;
-said disc is made of felt;
-the young's modulus of the disc is smaller than the young's modulus of the central portion;
-the grinding surface has a peripheral groove and the application surface has a rib configured to cooperate with the peripheral groove of the grinding surface.
The invention also provides a cleaning kit comprising an application device according to the invention, and a cleaning solution.
The present invention also provides a method of cleaning an abrasive surface in a machine for abrading an ophthalmic lens, the method comprising: the method comprises the steps of providing an applicator having an application surface sized to match the abrasive surface, mounting the applicator to the clamping member, and actuating the control means such that the abrasive wheel rotates about the first axis and the application surface contacts the abrasive surface to clean the abrasive surface.
Other optional and non-limiting features of the method are as follows:
-the control means are further designed to control the rotation of the assembly constituted by the gripping member and the ophthalmic lens about the second axis when the ophthalmic lens is received in the gripping member, the method further comprising actuating the control means so that the assembly constituted by the gripping member and the application device rotates about the second axis in order to clean the abrasive surface;
-the method further comprises actuating the control means such that the application surface and the abrasive surface are in contact before providing a cleaning solution on the application surface;
-the method further comprises injecting a rinsing liquid into the machine after cleaning the abrasive surface in order to rinse the machine.
Drawings
For a more complete understanding of the description provided herein and the advantages thereof, reference is now made to the following brief description, taken in connection with the accompanying drawings and detailed description, wherein like reference numerals represent like parts.
Figure 1 is a diagrammatic view of a lens grinder;
figure 2 shows a first embodiment of the application device according to the invention;
figures 3 and 4 show a partial section of a first embodiment of the application device;
figure 5 shows a partial section of a second embodiment of the application device; and
figures 6 and 7 represent the main steps of the method according to the invention.
Detailed Description
In the following description, the drawings are not necessarily to scale and certain features may be shown in generalized or schematic form in the interest of clarity and conciseness or for informational purposes.
Additionally, although making and using various embodiments are discussed in detail below, it should be appreciated that a wide variety of inventive concepts are provided as described herein that may be embodied in a wide variety of environments. The embodiments discussed herein are merely representative and do not limit the scope of the invention. It is also obvious to a person skilled in the art that all technical features defined with respect to the method can be transposed to the device alone or in combination, whereas all technical features defined with respect to the device can be transposed to the method alone or in combination.
FIG. 1 is a diagrammatic view of a
The control device is not shown in fig. 1, as its exact manner of operation is not essential to a full understanding of the present invention. Conventionally, the control means may comprise a stylus provided with a sensing probe or any other suitable measuring device. The control means may comprise a dedicated program which ensures good surface renewal and is stored, for example, in a support in the
Fig. 2, 3, and 4 show a first embodiment of an
The
Fig. 3 and 4 show partial cross-sections of the first embodiment of the
The
The
As shown particularly in fig. 4, at least one of the
The
The method according to the invention will now be described with reference to fig. 6 and 7.
The method includes providing an
The
The control means is then actuated such that the
Of course, methods are also contemplated in which only the
The control means are further actuated such that the
As shown particularly in fig. 6, the abrasive surface 113 of the polishing wheel wears and the diamond particles are smooth or are covered with dust or oxidized.
The method may optionally include a preliminary step during which the
Applying pressure to
The control means is actuated so that the application surface of the
To refresh the surface, the
The method may further include the step of injecting a rinsing fluid, such as water, into the
To ensure that the cleaning solution is effectively applied to the abrasive surface to be cleaned and/or renewed and that the
For example, the
For example, for a material thickness of 1mm, a
For example, the
The cleaning solution may include an alumina-based polishing agent or alumina-based polishing solution, or any other element exhibiting polishing and/or cleaning properties.
Fig. 5 shows a second embodiment of the
Two embodiments of the
Other solutions for providing some cleaning solution to the application surface of the applicator are envisaged.
For example, the
Alternatively, some cleaning solution may be applied to the
In another embodiment of the process of the present invention, once the
It is also conceivable to have an application device with an application surface configured to cooperate directly with the abrasive surface to be cleaned and/or renewed. For example, the application surface comprises a soft material configured to clean and/or renew the abrasive surface of the abrasive wheel.
Although representative methods and articles have been described in detail herein, those skilled in the art will recognize that various substitutions and modifications may be made without departing from the scope as described and defined by the appended claims.
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