JP2011206901A - Holder storage structure of lens layout and block device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a holder storage structure of a lens layout and block device, which enables layout and blocking a lens to be processed by two kinds of lens holders for a standard lens holder and a small diameter lens holder in batch processing by means of a single layout and block device.SOLUTION: The holder storage structure includes: a plurality of standard holder cassettes 180B, 180D and 180G for accommodating a plurality of kinds of standard lens holders 40A-40C according to the kind respectively; and a plurality of small diameter holder cassettes 180A and 180C-180F for similarly accommodating a plurality of kinds of small diameter lens holders 41A-41D according to the kind respectively. Identification areas colored in the same color according to the kind are provided on the standard lens holders, the standard holder cassettes, the small diameter lens holders and the small diameter holder cassettes, so that erroneous attachment is prevented.

Description

  The present invention relates to a holder housing structure for a lens layout block device.

  In the eyeglass lens manufacturing process, the lens block process is also called a layout block process, and is edged into a lens shape that matches the frame shape of the eyeglass frame on which the lens to be processed is to be mounted by the edge processing apparatus. At this time, the processing center position of the convex surface of the lens to be processed is blocked (held) by a processing jig (hereinafter referred to as a lens holder). The processing center position of the lens differs depending on the processing method and is not limited. In some cases, it is simply the geometric center position or optical center position of a circular lens, or in recent years it may be the frame center position of a specified spectacle frame.

  The spectacle lens includes various lenses such as a single focus lens, a multifocal lens, and a progressive multifocal lens. The outer diameter, the lens power, the thickness, and the like are different for each lens type. For this reason, for example, as described in Patent Documents 1 and 2, a plurality of types of lens holders with different curvatures of the lens holding surface depending on the lens power are prepared, and the curvature according to the curvature of the convex lens surface of the lens to be processed. The lens holder having the lens holding surface is selected, and the convex lens surface of the lens to be processed is blocked through an elastic seal.

  By the way, with the diversification of eyeglass frame designs in recent years, small-diameter frame frames having an oval shape or crab-shaped shape (common name used on the lens processor side) incorporating fashionability have become widespread. The lens shape of this small-diameter frame has a vertical width (hereinafter also referred to as B dimension) as compared to a normal size (hereinafter also referred to as standard lens shape), and a lateral width (hereinafter also referred to as A dimension). This is a horizontally long rectangle that is narrower and has a smaller machining diameter. The oval shape is a horizontally long ellipse having a narrower B dimension than a general ball shape, similarly to the crab shape. Hereinafter, the shape of a frame having a narrower B dimension than that of a normal standard shape is collectively referred to as a small-diameter shape.

  When processing and forming a small-diameter lens shape from the lens to be processed, the lens to be processed is used by using a lens holder dedicated to a standard lens lens (hereinafter also referred to as a standard lens holder) having a wide vertical holding width on the lens holding surface. If blocked, the cutting tool and the lens holder interfere with each other, making it impossible to block, the lens itself may be damaged, or the rotating shaft holding the lens holder may be damaged. For this reason, the lens holding surface is processed using a lens holder exclusively for small-diameter lens lenses (hereinafter also referred to as small-diameter lens holders) whose vertical width is narrow (see, for example, Patent Documents 3 and 4).

Japanese Patent No. 4181563 Japanese Patent No. 3764316 Japanese Patent Laid-Open No. 10-249692 JP 2006-346861 A

  When the lens to be processed is blocked by the lens holder, for example, a lens layout block device described in the cited document 2 is used. The lens layout block device is provided with a plurality of types of lens holders having lens holding surfaces with different curvatures according to the curvature of the convex lens surface in order to cope with the intensity prescription lens and the weakness prescription lens. A lens according to the convex curve of the lens to be processed, provided with a holder supply mechanism for storing and supplying each type, and a holder support mechanism for receiving, holding and centering the lens holder supplied from the holder supply mechanism (centering) The lens to be processed is blocked by a lens holder having a holding surface. Therefore, the holder supply mechanism includes a plurality of chutes that store the lens holders for each type, and a shutter mechanism that opens and closes the discharge port of each chute. The holder support mechanism includes a stage that reciprocates between a lens holding position and a terminal position of each chute, a holder hand that is provided on the stage and holds a lens holder supplied from the chute, and is held by the holder hand And a centering mechanism for centering the lens holder.

  The above-described conventional lens layout block device is a dedicated device that performs edge trimming of a standard lens shape lens. For this reason, in the case of performing edge trimming of a small-diameter lens, it is necessary to prepare a small-diameter lens holder and provide a processing line dedicated to the small-diameter lens.

  However, if two dedicated processing lines for standard and small diameters are provided, it is necessary to install a dedicated lens layout block device for each line. There has been a problem that the manufacturing cost is increased. For this reason, a general-purpose lens layout block that can automatically and continuously perform the lens block of the lens to be processed by two types of lens holders using a single lens layout block device. Development of the device was desired.

  In Patent Document 2, the lens holder is stored in the cassette and supplied to the chute. However, the lens holder is stored in a different cassette from the cassette for the holder, or the cassette is used for the cassette. If the chute is mistakenly attached to the chute, the lens block by the optimum lens holder cannot be performed, and problems such as the above-mentioned interference between the lens holder and the processing tool occur. Therefore, when the lens holder is stored in a dedicated cassette for each type, a lens holder of a different type is stored incorrectly, or when each cassette is mounted on a predetermined chute, it is erroneously mounted on another chute. It is necessary to provide means, devices, mechanisms, and the like that can reliably prevent this.

  The present invention has been made to meet the above-described conventional problems and demands. The object of the present invention is to use two types of lens holders for standard and small diameters according to the curvature of the convex lens surface of the lens to be processed. By preparing multiple types of each and preventing erroneous mounting of these lens holders on the cassette, the lens block of the lens to be processed by the two types of lens holders for standard and small diameter can be obtained with one lens layout block device. It is an object of the present invention to provide a holder housing structure for a lens layout block device which can be performed by a batch processing method.

  In order to achieve the above object, the lens holder housing structure of the lens layout block device according to the first invention corresponds to each of a plurality of types of lens groups each including a plurality of processed lenses having approximate convex curves. A plurality of standard lens holders that slidably store a plurality of types of standard lens holders for each type, and a plurality of types of lens groups each including a plurality of processed lenses having approximate convex curves, respectively. A plurality of small-diameter holder cassettes that slidably store corresponding types of small-diameter lens holders for each type, wherein the small-diameter lens holder has a lens holding portion whose vertical width is the standard lens. The standard lens holder, the standard holder cassette, and the small diameter lens holder are set narrower than the vertical width of the lens holding portion of the holder. Preliminary the small-diameter holder cassette is characterized in that it has an identification part colored in the same color for each type thereof, respectively.

  In the holder housing structure for the lens layout block device according to the second invention, in the above invention, the standard holder cassette has a graduation line indicating the center position of the standard lens holder to hold the lens of the standard lens holder. The small-diameter holder cassette displays a graduation line indicating the center position of the small-diameter lens holder at the vertical width interval of the lens holder of the small-diameter lens holder. It is characterized by being.

  The holder storage structure of the lens layout block device according to a third aspect of the present invention is the above invention, wherein the standard holder cassette and the small diameter holder cassette are formed over the entire length in the longitudinal direction and open to the front and front end sides, A holder-receiving groove having a substantially U-shape closed at the rear end side, and a holder drop-off preventing member is detachably attached to the front-end-side open portion of the holder-receiving groove, and the standard lens holder and the small-diameter lens holder Are respectively located in the holder housing grooves of the standard holder cassette and the small diameter holder cassette, the lens holding portion side in the holder housing groove, and the end opposite to the lens holding portion side is the front of the holder housing groove. The axial line is stored in a state orthogonal to the longitudinal direction of the holder storage groove so as to protrude from the side opening to the front of the cassette. Is shall.

  According to a fourth aspect of the present invention, there is provided the holder housing structure for the lens layout block device according to the above invention, wherein the holder housing grooves of the standard holder cassette and the small diameter holder cassette are respectively formed from the rotation of the lens holder and the front opening. The standard lens holder and the small-diameter lens holder are slidably fitted to the rotational drop-off prevention portions of the standard holder cassette and the small-diameter holder cassette, respectively. It has the fitting part to perform.

  According to the first aspect of the present invention, there is provided a dedicated standard holder cassette and a small diameter holder cassette for storing the standard lens holder and the small diameter lens holder for each type, and the color that is colored in the identification portion and the lens By identifying the color that is colored in the identification part of the holder and storing the lens holder in a cassette that matches the identification color, erroneous mounting of the lens holder to the cassette can be reliably prevented. Further, since the identification unit is in color display, identification is easier than identification display using identification symbols, numbers, characters, and the like.

  In the second invention, the intervals between the scale lines of the standard holder cassette are wide, and the intervals between the scale lines of the small diameter holder cassette are narrow. Therefore, it is possible to identify erroneous mounting of the standard and small-diameter lens holders on the cassette by visually confirming whether the scale line and the center position of the lens holder match.

  In the third invention, since the holder drop prevention member is provided in the cassette, it is possible to prevent the lens holder housed in the holder housing groove from dropping out from the front end side opening portion of the cassette.

  In the fourth aspect of the invention, the rotation of the lens holder within the cassette and the removal of the cassette from the front opening can be prevented by the rotation drop prevention portion provided in the cassette.

It is a whole block diagram of a spectacle lens manufacturing supply system. It is sectional drawing which shows the state which blocked the lens with the lens holder. It is a schematic block diagram of the layout block device for lenses. (A) is a perspective view of a standard lens holder, (b) is a diagram showing a lens holding surface, (c) is a side view taken along arrow A, and (d) is a state in which the standard lens holder is held by a holder hand. Sectional drawing, (e) is a diagram showing a state in which the lens to be processed is blocked by a standard lens holder. (A) is a perspective view of a small-diameter lens holder, (b) is a diagram showing a lens holding surface, (c) is a side view as viewed from arrow C, and (d) is a state in the middle of holding a small-diameter lens holder with a holder hand. (E) is a figure which shows the state which blocked the to-be-processed lens with the lens holder for small diameters. It is a schematic perspective view which shows the principal part of a holder supply apparatus. It is a perspective view which shows the rear end side of a 1st holder supply apparatus. It is sectional drawing of the holder discharge port part of a chute | shoot. It is a perspective view which fractures | ruptures and shows a part of cassette for standard holders. (A) is a figure which shows the relationship between the chute | shoot, a cassette, and a lens holder in a 1st holder supply apparatus, (b) is a figure which shows the relationship between the chute | shoot, a cassette, and a lens holder in a 2nd holder supply apparatus.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
First, a spectacle lens manufacturing and supplying system will be schematically described with reference to FIG.
The eyeglass lens manufacturing and supply system 1 includes an ordering side computer 3 of an eyeglass store 2 that is an ordering side, and a manufacturing side computer 6 of a factory 5 that manufactures spectacle lenses 4 having a predetermined target lens shape according to the order. Are connected by a public communication line 7. Although only one spectacle store 2 is shown in FIG. 1, a plurality of spectacle stores are actually connected to the manufacturing computer 6. In addition to the spectacle store 2, examples of the ordering source include an ophthalmic clinic and an individual.

  The public communication line 7 may be the Internet, other public lines, or a dedicated line such as a LAN. A relay station may be provided between the ordering computer 3 and the manufacturing computer 6.

  The ordering computer 3 is connected to an input means 8 such as a keyboard, a display screen display device 9, and a three-dimensional spectacle frame measuring device 10. Further, the ordering computer 3 is provided with a lens ordering program and an equipment environment necessary for ordering in advance, and includes frame information including spectacle lens information 11 necessary for ordering the spectacle lens 4 and circumference data of the spectacle frame 12. 13. The wearer's prescription data 14 and layout information 15 (hereinafter referred to collectively as frame information) are entered to order the manufacture of the spectacle lens 4 from the factory 5.

  The manufacturing computer 6 includes a storage unit 18, a calculation control unit 19, and a communication unit 20, and stores data such as spectacle lens information 11, frame information 13, prescription data 14, and layout information 15 sent from the ordering computer 3. The eyeglass lens 4 is acquired and designed to conform to the prescription, and information is sent to the eyeglass lens processing system 21 on the factory 5 side.

  The storage unit 18 stores a design program, a machining data generation program, and the like. The design program has a function of causing the manufacturing computer 6 to acquire prescription information of the pair of left and right spectacle lenses 4 and a function of creating design data of each spectacle lens 4 based on the acquired prescription information.

  The processing data generation program realizes a function for generating processing data necessary for the lens processing apparatus to perform actual lens processing on the manufacturing side computer 6 based on the design data created by the design program.

  The arithmetic control unit 19 executes a design process or the like by executing a design program or the like. In addition, the arithmetic control unit 19 generates various data as control information for the spectacle lens processing system 21 by executing the processing data generation program, and performs control for transmitting the generated processing data to the spectacle lens processing system 21. Do.

  The communication unit 20 transmits and receives data between the ordering computer 3 and the eyeglass lens processing system 21 under the control of the arithmetic control unit 19.

  The eyeglass lens processing system 21 includes a lens layout and block device 30 and an edge trimming device 31 which will be described later.

  Further, the manufacturing computer 6 has an inquiry response function 32, an order receiving function 33 including whether processing is possible and whether an order is accepted, and a processing availability determination function 34 corresponding to the functions of the ordering computer 3.

  When the factory 5 receives an order for the spectacle lens 4 from the spectacle store 2, it is sent to the lens manufacturing line whether there is an unprocessed lens in stock that meets the order, and the lens surface processing and surface treatment are manufactured. By determining whether the lens is to be performed, an order-specific processed lens 35 (usually circular but may be elliptical) is prepared. Then, the lens 35 to be processed for which final processing such as lens surface treatment has been completed is sent to a lens block process that is a pre-process of the beveling process (edge trimming process).

  In FIG. 2, a lens to be processed 35 includes a progressive multifocal lens made of plastic, a single focus lens, and the like, and has a convex lens surface 35a, a concave lens surface 35b, and an outer peripheral surface (edge surface) 35c. The edge crushing device 35c is edged into a target lens shape that matches the frame shape.

  The types of lens 35 to be processed are so many as to be infinite by the combination of the convex curve D1 and the concave curve D2 with respect to one lens power D (diopter), and are actually determined in consideration of optical aberration and inventory management. . Specifically, by adopting a lens design in which the convex curve D1 is reduced and the concave curve D2 is changed, for example, in the case of a progressive multifocal lens, eight types of lenses from 2 curves to 9 curves are prepared. In the case of a single focus lens, since the corresponding power range is generally wide, for example, 12 types of lenses from 0 curve to 11 curve are prepared.

  In order to make the lens holders described later common, here, in the case of a standard single focus lens, a plurality of lens groups having a group of approximated curves, for example, lenses having 0 to 3 curves, for example, a first lens group. A lens having 4 to 6 curves is divided into three groups, that is, a second lens group, and a lens having 7 to 11 curves is divided into a third lens group. Further, in the case of a standard progressive multifocal lens, there are three lenses, a first lens group having a 2-3 curve lens, a second lens group having a 4-6 curve lens, and a third lens group having a 7-9 curve lens. It is divided into.

  On the other hand, in the case of a small-diameter single focus lens, the 0-3 curve lens is the first lens group, the 4-6 curve lens is the second lens group, the 7-9 curve lens is the third lens group, 10-11. In the case of a progressive multifocal lens having a small diameter, the curved lens is divided into four lenses in the fourth lens group, the lens having the 2-3 curve is the first lens group, the lens having the 4-6 curve is the second lens group, 7 The lens having ˜9 curves is divided into three in the third lens group.

The lens power D is expressed by the difference in curvature between the convex curve D1 and the concave curve D2. In the case of a semi-finished lens such as a single focus lens or a progressive multifocal lens, the lens power is classified only by the convex curve D1. ing. For example, in the case of a single focus lens having a lens power D of 4, it is called a 4-curve lens, and its radius of curvature is given by the following formula: D = (N−1) × 1000 / R (mm)
Sought by. In this case, N is the refractive index of the lens, and is 1.50 in the case of diethylene glycol bisallyl carbonate, which is the most versatile plastic lens material. R is the radius of curvature of the convex lens surface. Therefore, in the case of 4 curves, when substituting into the above equation, R = 125 mm from 4 = (1.5−1) × 1000 / R. Similarly, in the case of 7 curves, when converted to the radius of curvature, it is about 71 mm, and in the case of 11 curves, it is about 45 mm.

  In FIG. 3, a lens layout block device 30 for performing a lens blocking step is a device for determining a lens processing center for edging processing of the lens 35 to be processed and blocking the processing center position. As shown in FIGS. 4 (e) and 5 (e), the lens 35 to be processed is trimmed in accordance with an order from the store 2, and as shown in FIG. 4 (e) and FIG. It is possible to block the lens 35 to be processed by the two types of lens holders used when manufacturing the lens 4B and the small-diameter lens 4B, that is, the standard lens holder 40 and the small-diameter lens holder 41. Here, the spectacle lens that has been edged into a target lens shape with a B dimension of 28 mm or more is referred to as a standard lens lens 4A, and the spectacle lens that has been edged into a target lens shape with a B dimension of 28 mm or less. When referred to as the small-diameter lens 4B and referred to without distinction, it is simply referred to as a spectacle lens or a lens.

  Such a lens layout block device 30 includes an image processing device 45, a lens tilt angle measuring device 46, a lens meter 47, a manipulator 48 as a holder holding and conveying device, a lens moving device 49, and a seal supply device. 50, a holder supply device 51, a central control device 52 for controlling these devices, and the like.

  The image processing apparatus 45 detects the reference mark displayed on the processed lens 35 and the staining direction by imaging the processed lens 35 using a high-quality CCD camera and performing image processing. The detected data is used for controlling the coordinates (position) at the time of optical measurement by the lens block or the lens meter 47 by the manipulator 48.

  The lens inclination angle measuring device 46 measures the holding posture of the lens 35 to be processed by a total of five height gauges composed of four convex surfaces and one concave surface. It is used for coordinate control during optical measurement by the lens meter 47.

  The lens meter 47 performs optical measurement at a predetermined measurement position detected by the image processing device 45 and the lens tilt angle measuring device 46. When the lens 35 to be processed is a single focus lens, the lens block reference at the time of measurement is used. The optical center (the prism value falls within the optical standard value) is repeatedly measured.

  The manipulator 48 attaches the standard lens holder 40 (or the small diameter lens holder 41) to the convex surface side processing center position of the processing lens 35 via the elastic seal 42 (or 43), and blocks the processing lens 35. Multi-axis (eg 6-axis) articulated robots are used to allow lens blocks from the normal direction.

  The lens moving device 49 is a device for moving the processed lens 35 between the devices, and a conveyor or the like is used.

  The seal supply device 50 includes a first seal supply device 53 that supplies an elastic seal 42 (FIG. 4E) for a standard lens lens that is attached to the standard lens holder 40, and a small-diameter lens holder 41. And a second seal supply device 54 that supplies an elastic seal 43 (FIG. 5 (e)) for a small-diameter lens attached to the lens.

  The central control device 52 is connected to all the devices constituting the lens layout block device 30, and the lens data 55, the lens shape data 56, the block data 57, the lens tilt angle measuring device 46, and the lens meter 47 are measured. Each device is controlled based on the value and the detected coordinates.

  The lens data 55 is optical prescription and order data. The lens shape data 56 is data on the uneven surface shape and thickness of the lens. The block data 57 is data such as block coordinates, lens holder, and type of elastic seal.

  Further, the central control device 52 performs a edging process simulation calculation from the frame information such as the spectacle lens information 11, the frame information 13, the prescription data 14, and the layout information 15 about the lens 35 to be processed, and checks the processing interference. Then, the lens holder 40 or 41 suitable for optimum edge trimming is determined, and the manipulator 48 is controlled. Further, calculation processing is performed based on the measurement result by the lens tilt angle measuring device 46 to determine the normal direction of the block position of the lens 35 to be processed. This is because the lens holder 40 or 41 is used to block the position of the lens 35 to be processed from the normal direction, thereby minimizing the positional deviation of the lens holder. When the block is not blocked from the normal direction, if the block position is deviated from the lens center (geometric center), the lens holder is inclined and displaced due to the convex curve. In addition, the adhesion between the elastic seal and the lens to be processed is weakened.

  Further, the lens layout block device 30 includes a lens tray 58 and a pad press 61.

  The lens tray 58 stores a pair of left and right processed lenses 35 (35 (R) and 35 (L)), and is sequentially conveyed to the above-described device by a lens moving device 49.

  The pad press 61 is an elastic seal pressurizing unit, and a lens holder is attached to the lens 35 to be processed via the elastic seal, and the lens once in the layout block is held by the manipulator 48. This is a device for bringing in contact with a pad made of a rubber member or the like from the side opposite to the lens holder side, and pressing the lens against the elastic seal again to promote close contact between the lens holder and the lens, thereby increasing the close contact strength. .

  In FIG. 4, the standard lens holder 40 used for manufacturing the standard lens 4 </ b> A is formed in a cylindrical body with a flange that is open at both ends by using a metal (or synthetic resin) such as stainless steel. 70, a flange 71 provided at an intermediate portion of the outer peripheral surface of the main body 70, and a lens holding portion 72 provided at the distal end portion of the main body 70 are integrally provided. The total length of the standard lens holder 40 is 25 mm, the outer diameter of the main body 70 is 14 mm, the outer diameters of the flange 71 and the lens holding part 72 are 20 mm, the thickness is 5 mm, and the hole diameter of the center hole 73 is about 10 mm.

  The base end portion of the main body 70, that is, the rear end side of the flange 71 is a portion that is fitted and held in the fitting hole 74 a of the holder hand 74 of the manipulator 48, and forms a fitting shaft portion 75. The fitting shaft portion 75 has a length of about 10 mm. When the fitting shaft portion 75 is completely fitted into the fitting hole 74 a of the holder hand 74, the rear end surface of the flange 71 comes into contact with the front end surface of the holder hand 74. The fitting amount of the fitting shaft portion 75 with respect to is defined.

  The flange 71 has two fitting recesses 76 and 77 formed on the circumferential surface with a phase shifted by 180 degrees in the circumferential direction. One fitting recess 76 functions as a rotation preventing portion that prevents the lens holder 40 from rotating with respect to the holder hand 74, and includes a narrow groove that opens to the circumferential surface and the front and rear surfaces of the flange 71. A projecting portion 74b projecting from the front end surface of is inserted. The fitting recess 76 has a depth of about 2.5 mm and a width of about 4 mm.

  The other fitting recess 77 defines the insertion direction of the lens holder 40 with respect to the chute 120 and the cassette 180, which will be described later, and prevents rotation, and is a recess that opens to the front side from the intermediate portion in the width direction on the peripheral surface of the flange 71. It is formed in an elongated recess having a depth of 2.5 mm, a left-right width of 13 mm, and a front-rear width of about 3 mm.

  The lens holding portion 72 is provided at a distance of about 5 mm in front of the flange 71 so that an annular groove 79 is formed between the lens holding portion 72 and the flange 71, and a lens whose front surface blocks the convex lens surface 35 a of the lens 35 to be processed. A holding surface 78 is formed. The lens holding surface 78 is formed as a concave spherical surface having a different curvature radius for each lens group of the lens 35 to be processed.

  When the radius of curvature of the lens holding surface 78 is larger than the radius of curvature of the convex side lens surface 35a of the lens 35 to be processed, only the central portion contacts the convex side lens surface 35a and the outer peripheral edge becomes non-contact. A stable inner circumference holding state is obtained. On the contrary, when the radius of curvature is small, only the outer peripheral portion of the lens holding surface 78 is in contact with the convex lens surface 35a and the central portion is in a non-contact state, so that a stable outer peripheral holding state is obtained, Axial misalignment and the like can be prevented.

  Therefore, in the present embodiment, for the standard lens 4A, the radius of curvature of the lens holding surface 78 corresponding to the first to third lens groups of the lens 35 to be processed is 4 curves, 7 curves, 11 curves. 3 types (first to third) standard lens holders 40A, 40B, and 40C are prepared, and in the case of a single focus lens, the first lens group having 0 to 3 curves is replaced with the first standard lens having 4 curves. The outer periphery is held by the holder 40A, the second lens group having 4 to 6 curves is held by the second standard lens holder 40B having 7 curves, and the third lens group having 7 to 11 curves is third standard having 11 curves. The lens holder 40C is used to hold the outer periphery (however, an 11-curved lens is a lens holder having the same curve).

  Similarly, in the case of a progressive multifocal lens, the first lens group having 2 to 3 curves is held at the outer periphery by the first standard lens holder 40A having 4 curves, and the second lens group having 4 to 6 curves is 7th curved. The outer periphery is held by the second standard lens holder 40B, and the third lens group having 7 to 9 curves is held by the third standard lens holder 40C having 11 curves.

  In this way, in the present invention, the lens 35 to be processed is divided into three lens groups by the convex curve, and three types of standard lens holders having different curvature radii of the lens holding surface 78 corresponding to these lens groups. By preparing 40A to 40C, the lenses of each lens group are held at the outer periphery, and the types of lens holders 40 are reduced. It should be noted that the three types of standard lens holders 40A to 40C are the same except for only the radius of curvature of the lens holding surface 78. In addition, if the difference in the radius of curvature between the convex lens surface 35a and the lens holding surface 78 is large, the degree of adhesion between the two surfaces decreases and the holding force decreases, so it is desirable that the difference be small. In other words, if the number of lens groups is reduced, the number of lenses in each lens group is increased and the range of the convex curve is widened, so that the holding power is reduced, and the number of lens groups is increased when the number of lens groups is increased. . Therefore, the number of lens groups is preferably about 3-4.

  On the lens holding surface 78, a large number of minute protrusions 80 are formed radially over the entire circumference in order to increase the tight coupling force with the elastic seal 42. The protrusion 80 has two inclined surfaces having the same inclination angle (for example, 45 degrees) by being formed into an isosceles triangular protrusion. As described above, if the inclination angles of the two inclined surfaces of the ridge body 80 are made equal, the elastic seal 42 can be evenly adhered to both inclined surfaces to increase the contact area. Therefore, the holding force with respect to the lens to be processed 35 can be increased. Further, since the elastic seal 42 is uniformly pressed against both slopes of the ridge body 80, unbalanced rotation is canceled at the time of edging, and there is no possibility that the elastic seal 42 is rotationally displaced. The elastic seal 42 will be further described later.

  A fitting recess 81 communicating with the annular groove 79 is formed opposite to the other fitting recess 77 of the flange 71 on the outer peripheral surface of the lens holding portion 72 on the rear side from the intermediate portion in the thickness direction. The fitting recess 81 has the same shape as the fitting recess 77, and forms a fitting portion 82 that defines the insertion direction of the lens holder 40 with respect to the chute 120 and the cassette 180 together with the fitting recess 77.

  Further, an identification member 84 for identifying the type of the lens holder 40 is press-fitted and fixed in the fitting shaft portion 75 of the lens holder 40 so as to be visible from the outside. The identification member 84 is formed in a cylindrical body colored in a required color with a synthetic resin. The color of the identification member 84 differs depending on the type of the lens holder 40. For example, as shown in Table 1, the identification member 84 of the first standard lens holder 40A having four curves is white, and the second standard for seven curves is used. The identification member 84 of the lens holder 40B is colored red, and the identification member 84 of the eleventh curve third standard lens holder 40C is colored blue. Therefore, by visually recognizing the color of the identification member 84, it is possible to identify at a glance whether the standard lens holder 40 has a 4-curve, 7-curve or 11-curve.

  Such a standard lens holder 40 has the fitting portion 82 up, the fitting concave portion 76 down, the fitting shaft portion 75 forward, the lens holding portion 72 behind, and the chute 120 and the cassette 180 facing sideways. It is stored in. When the convex lens surface 35a of the lens 35 to be processed is blocked by the standard lens holder 40, the horizontal direction of the lens holding portion 72 is made to coincide with the A dimension direction of the standard lens lens 4A, and the vertical direction is B. Hold in the same direction as the dimension. The left and right direction of the lens holding portion 72 at the time of the lens block is a direction in which the fitting concave portion 76 and the fitting concave portion 77 are opposed to each other, and the vertical direction is a direction orthogonal thereto. Note that the width A1 in the left-right direction is equal to the width B1 in the up-down direction (20 mm).

  In FIG. 5, the small-diameter lens holder 41 used for the edging process of the small-diameter lens 4B only differs from the standard lens holder 40 in the vertical dimension B2 of the lens holding portion 92, and the other structures are substantially the same. Are the same. For this reason, the small-diameter lens holder 41 is formed in a cylindrical body with a flange that is open at both ends by a metal (or synthetic resin) such as stainless steel, so that the cylindrical main body 90 and an intermediate portion of the outer peripheral surface of the main body 90 are formed. A flange 91 provided and a lens holding portion 92 provided at the tip of the main body 90 are integrally provided. The total length of the small-diameter lens holder 41 is 25 mm, the outer diameter of the main body 90 is 14 mm, the horizontal width A2 and the vertical width B2 of the flange 91 and the lens holding portion 92 are 20 mm and 16 mm, respectively, and the thickness is 5 mm. The diameter of the hole 93 is about 10 mm. A2 is equal to A1, and B2 is narrower than B1.

  The base end portion of the main body 90, that is, the rear end side of the flange 91 is a portion that is fitted and held in the fitting hole 74 a of the holder hand 74 of the manipulator 48, and forms a fitting shaft portion 95.

  The flange 91 has two fitting recesses 96 and 97 formed on the circumferential surface with a phase shifted by 180 degrees in the circumferential direction. One fitting recess 96 functions as an anti-rotation portion that prevents the lens holder 41 from rotating relative to the holder hand 74, and includes a narrow groove that opens to the outer peripheral surface and the front and rear surfaces of the flange 91. .5 mm and width of about 4 mm.

  The other fitting recess 97 defines the insertion direction of the lens holder 41 with respect to the chute 120 and the cassette 180 and prevents rotation and drop-off, and opens to the front side from the intermediate portion in the thickness direction on the peripheral surface of the flange 91. It consists of a recess and is formed into an elongated recess having a depth of 2.5 mm, a left-right width of 13 mm, and a front-rear width of about 3 mm.

  The lens holding portion 92 is provided at a distance of about 5 mm in front of the flange 91, and the front surface forms a lens holding surface 98 that blocks the convex lens surface 35 a of the lens to be processed 35. The lens holding surface 98 is formed as a concave spherical surface having a different curvature radius for each lens group of the lens 35 to be processed. That is, for the small-diameter lens holder 41, the radius of curvature of the lens holding surface 98 is four types (fourth, seventh, ninth, and eleventh) for the four lens groups of the small-diameter single focus lens (first to first curves). 4) small-diameter lens holders 41A to 41D are prepared, and in the case of a single focus lens, the first lens group having 0 to 3 curves is held by the first small-diameter lens holder 41A having 4 curves, and 4 to 6 curves. The second lens group is held at the outer periphery by a second small-diameter lens holder 41B having a 7 curve, and the third lens group having a 7-8 curve is held at the outer periphery by a third small-diameter lens holder 41C having a 9 curve. The fourth lens group having 11 curves is held at the outer periphery by a fourth small diameter lens holder 41D having 11 curves.

  Similarly, in the case of a progressive multifocal lens, the first lens group having 2 to 3 curves is held at the outer periphery by the first small-diameter lens holder 41A having 4 curves, and the second lens group having 4 to 6 curves has a 7th curve. The outer periphery is held by the second small-diameter lens holder 41B, and the third lens group having 7 to 9 curves is held by the third small-diameter lens holder 41C having 9 curves.

  In addition, a large number of minute protrusions 100 are formed radially on the entire circumference of the lens holding surface 98 in order to enhance the tight coupling force with the elastic seal 43 for a small diameter. The protrusion 100 is formed in the same shape as the protrusion 80 of the standard lens holder 40.

  A fitting recess 101 that faces the other fitting recess 97 of the flange 71 is formed on the outer peripheral surface of the lens holding portion 92. The fitting recess 101 has the same shape as the fitting recess 97, and together with the fitting recess 97, forms a fitting portion 102 that defines the insertion direction of the cassette and chute with respect to the lens holder 41.

  An identification member 104 for identifying the type of the small-diameter lens holder 41 is press-fitted and fixed in the fitting shaft portion 95 of the small-diameter lens holder 41 so as to be visible from the outside. The color of the identification member 104 varies depending on the type of the small-diameter lens holder 41. For example, as shown in Table 2, the identification member 104 of the first small-diameter lens holder 41A having four curves is colored white, The identification member 104 of the second small-diameter lens holder 41B is colored red, the identification member 104 of the third small-diameter lens holder 41C having a 9 curve is colored blue, and the fourth small-diameter lens holder 41D having an 11 curve is colored. The case is colored black. Therefore, by visually recognizing the color of the identification member 104, it is possible to identify at a glance whether the small-diameter lens holder 41 has a 4-curve, a 7-curve, a 9-curve, or an 11-curve.

  Further, the small diameter lens holder 41 has two flat portions 105a and 105b and 106a and 106b formed on the outer peripheral surface of the flange 91 and the outer peripheral surface of the lens holding portion 92, respectively. The width B2 in the vertical direction 92 is set to be narrower than the widths A2 and B1 in the left-right direction, which is different from the standard lens holder 40 in this respect. These flat portions 105a and 105b and 106a and 106b are provided to prevent the cutter from hitting the flange 91 or the lens holding portion 92 during the edge-grinding processing of the small-diameter lens 4B. Each of the recesses 96 and 97 is formed at a position spaced apart by 90 degrees in the circumferential direction.

  Similarly to the standard lens holder 40, the small-diameter lens holder 41 also has the fitting portion 102 up, the fitting concave portion 96 down, the fitting shaft portion 95 in front, and the lens holding portion 92 in the rear. Then, the chute 120 and the cassette 180 are stored sideways. Further, when the convex lens surface 35a of the lens to be processed 35 is blocked by the small diameter lens holder 41, the left and right direction of the lens holding portion 92 is matched with the A dimension direction of the small diameter lens lens 4B, and the vertical direction is B. Hold in the same direction as the dimension. The left and right direction of the lens holding portion 92 at the time of the lens block is a direction in which the fitting concave portion 96 and the fitting concave portion 97 are opposed to each other, and the vertical direction is a direction orthogonal to this.

  4 (d) and 4 (e), the elastic seal 42 for the standard lens lens used for the standard lens holder 40 is made of rubber and has a substantially elliptical shape with a thickness of about 1 mm. A center hole 110 having a diameter of about 8 mm is provided, and an adhesive layer is formed on the front and back surfaces. The adhesive strength of the adhesive is different between the front and back surfaces, and the lens holder 40 side is weak and the workpiece lens 35 side is strong. The elastic seal 42 is formed larger than the lens holding surface 78 of the standard lens holder 40, has a length in the major axis direction of 27 mm, and a length in the minor axis direction of about 22 mm. 1 is supplied to the seal supply position of the seal supply device 53.

  In FIG. 5, the elastic seal 43 for a small-diameter lens used for the small-diameter lens holder 41 is substantially oval larger than the lens holding surface 98 of the small-diameter lens holder 41, similar to the elastic seal 42 for a standard lens. Although it is formed into a shape, it is a standard ball in that flat portions 112a and 112b parallel to both sides in the minor axis direction are formed, the length in the major axis direction is 27 mm, and the length in the minor axis direction is 18 mm. This is different from the mold lens elastic seal 42. That is, the small-diameter lens lens elastic seal 43 is formed with a narrower width in the short axis direction than the standard lens lens elastic seal 42 in order to enable processing of the small-diameter lens lens 4B. , And supplied to the seal supply position of the second seal supply device 54. Other configurations are the same as the elastic seal 42 for the standard lens lens.

  6 to 9, the holder supply device 51 of the lens layout block device 30 includes first and second holder supply devices 62 and 63.

  In FIG. 6, the first holder supply device 62 includes six chutes 120 (first to sixth chutes 120 </ b> A to 120 </ b> F) that house the lens holders 40 and 41 for each type. These chutes 120 are commonly used for both the standard lens holder 40 and the small-diameter lens holder 41. In the present embodiment, the first chute 120A is used as the first small-diameter lens having four curves. A dedicated small-diameter holder chute for accommodating the holder 41A, the second chute 120B as a dedicated standard holder chute for accommodating the 7-curve second standard lens holder 40B, and the third chute 120C as a 7-curve A dedicated small-diameter holder chute for accommodating the second small-diameter lens holder 41B, a fourth chute 120D as a dedicated standard holder chute for accommodating the 11-curve third standard lens holder 40C, and a fifth The chute 120E is a small-diameter holder chute dedicated for housing the third small-diameter lens holder 41C having 9 curves, Chute 120F and has a fourth dedicated chute diameter holder for accommodating the small diameter lens holder 41D of the 11 curves.

  Further, as shown in FIGS. 6 and 7, the chute 120 is formed in a substantially L-shaped side view with the same shape, and thus has a horizontal plate portion 123A and a vertical plate portion 123B integrally, Between the horizontal plates 123A of the two chutes 120A and 120B, 120B and 120C... 120E and 120F, which are stacked and inclined at a predetermined angle (for example, 20 degrees) so that the side is lower than the rear end side. Each space forms a holder storage portion 135 for slidably storing the standard lens holder 40 or the small diameter lens holder 41. The holder storage portion 135 is formed of a concave groove formed over the entire length of the chute 120 and is open to the front side and the front and rear ends of the chute 120. The holder storage part 135 includes a pair of front and rear ridges 130 and 131 and a pair of guide grooves 132 and 133 provided on the bottom wall side, and a rectangular wide ridge part provided on the upper wall side of the concave groove. 134. The pair of protrusions 130 and 131 and the guide grooves 132 and 133 are alternately provided over the entire length of the upper surface of the horizontal plate part 123A, and the front guide groove 132 is located between the protrusions 130 and 131. The rear guide groove 133 is positioned behind the rear protrusion 131. On the other hand, the protrusion 134 protrudes over the entire length of the lower surface of the horizontal plate 123A of the upper chute 120 located immediately above. And this protrusion part 134 consists of a protrusion body wider than the said protrusion parts 130 and 131, and comprises the "rotation | falling prevention part" in the invention of Claim 4.

  The standard lens holder 40 is housed in the holder housing portion 135 of the chute 120 so that the central axis of the main body 70 is horizontal as shown in FIGS. 6 and 7. When storing, the fitting shaft portion 75 of the lens holder 40 faces the front (front side) of the chute 120, the lens holding portion 72 of the lens holder 40 faces the rear of the chute 120, and the fitting portion 82 is set vertically upward. The fitting concave portion 76 is set vertically downward, and the fitting portion 82 is slidably fitted (freely fitted) to the upper ridge portion 134 of the chute 120 so that the flange 71 and the lens holding portion 72 of the lens holder 40 are fitted. The guide grooves 132 and 133 of the chute 120 are slidably inserted into the guide grooves 132 and 133, respectively, and are accommodated in the holder accommodating part 135 from the rear end side opening part of the chute 120. When the lens holder 40 is housed in the holder housing portion 135 of the chute 120 in this way, the fitting shaft portion 75 of the lens holder 40 is placed on the protrusion 130 on the front side of the chute 120 and the front of the chute 120. It protrudes from the side opening 135a. On the other hand, the lens holding part 72 is located inside the holder storage part 135 of the chute 120. The fitting portion 82 is slidably fitted to a ridge portion 134 protruding from the lower surface of another chute 120 immediately above, thereby preventing the lens holder 40 from rotating and dropping off from the front opening 135a. To prevent. Further, the flange 71 and the lens holding portion 72 are also inserted into the guide grooves 132 and 133 of the chute 120, thereby preventing the lens holder 40 from falling off from the front opening 135 a of the chute 120. A flat cover member 137 is fixed to the upper surface of the vertical plate portion 123B of the uppermost chute 120A, and a space formed between the cover member 137 and the horizontal plate portion 123A is defined as a holder storage portion. 135. The cover member 137 is formed so that the front-rear width is shorter than the front-rear width of the horizontal plate portion 123A of the chute 120, and a protrusion 134 that the fitting portion 102 of the small-diameter lens holder 41A is fitted to the front end portion of the lower surface integrally projects. Has been.

  Similarly, the small-diameter lens holder 41 is accommodated in the holder accommodating portion 135 of the chute 120 so that the central axis of the main body 90 is horizontal, like the standard lens holder 40. When stored, the two flat portions 105a and 105b and 106a and 106b face each other in the left-right direction so that the fitting recess 97 is on the top and the fitting recess 96 is on the bottom.

  The chutes 120A to 120F are colored in the same color as the identification colors of the identification members 84 and 104 attached to the lens holders 40A to 40C and 41A to 41D. That is, as shown in FIG. 10, the chutes 120A to 120F are colored white, red, red, blue, blue, and black, respectively. In this case, the chutes 120A to 120F are made of colored resin to make the whole as an identification portion. However, only the surface visually recognized from the worker side, for example, the front surface 120a side is colored to make the identification portion, or a predetermined color. You may stick a colored sticker as an identification member. Further, the number of chutes 120 installed in the first holder supply device 62 can be appropriately increased or decreased according to the frequency of use of the lens holders 40 and 41.

  6 and 8, a holder discharge port member 150 that forms a discharge port of each chute 120 is attached to the front end of the first holder supply device 62. The holder discharge port member 150 has a height extending over the entire length in the height direction of the first holder supply device 62, and six holder discharge ports 151 a to 151 f are formed on the front side, and the front end side of each chute 120 is open. Each communicates with the portion 135b. Each of the holder outlets 151a to 151f has a size capable of accommodating one lens holder 40 or 41.

  On the back side of the holder discharge port member 150, six holder discharge devices 160 for cutting out the first lens holder 40 or 41 housed in each chute 120 and sequentially discharging them to the holder discharge ports 151a to 151f are arranged. It is installed. The holder discharge device 160 is composed of a solenoid (or air cylinder), and the front end side opening 135b of the normal chute 120 is closed by a movable pin 161 that can be moved forward and backward, and is driven by a drive signal from the central control device 52. The movable pin 161 is moved backward to open the front end side opening 135b for a predetermined time. For example, when supplying the second standard lens holder 40B housed in the second chute 120B, the holder discharge device 160 provided in the chute 120B is driven by a drive signal from the central control device 52. Thus, the movable pin 161 is moved backward to open the front end side opening 135b of the chute 120B. Therefore, when the first standard lens holder 40B is released from the movable pin 161, it slides by its own weight and moves to the holder discharge port 151b. On the other hand, when the first lens holder 40B passes, the movable pin 161 moves forward and returns to its original state, and closes the front end side opening 135b. When the first lens holder 40B moves to the holder discharge port 151b, the second lens holder 40B slides and moves on the chute 120B to the position of the movable pin 161 that has returned to its original state by sliding under its own weight. When it comes into contact with the pin 161, it stops and becomes a new first lens holder. By repeating such an operation, the lens holders 40B can be automatically and sequentially supplied one by one.

  In this case, when the movable pin 161 moves backward and the first lens holder 40B moves, the second lens holder 40B also moves in contact with the first lens holder 40B. For this reason, in order to separate the first and second lens holders, for example, a holder discharge device other than the holder discharge device 160 is additionally installed, and the movable pin 161 of the holder discharge device 160 is restored to its original state. In the meantime, it is desirable to lock the second lens holder 40B with another holder discharging device. When the first standard lens holder 40B is moved to the holder discharge port 151b, the manipulator 48 is driven by a drive signal from the central controller 52 and holds the fitting shaft portion 75 of the lens holder 40B by the holder hand 74. Then, the lens holder 40B is taken out from the lens discharge port 151b and conveyed to the seal sticking position of the first seal supply device 53.

In FIG. 6 and FIG. 7, a connecting member 170 constituting a connecting portion with the cassette 180 is provided on the rear end surface 120 b of each chute 120. The connecting member 170 is composed of a pair of front and rear connecting pins 170A and 170B. The pair of connecting pins 170A and 170B have the same outer diameter, and the pin intervals d _{1 to} d ₆ are different for each chute 120A to 120F. This is to prevent erroneous mounting of the cassettes 180A to 180F.

Similar to the first holder supply device 62, the second holder supply device 63 includes a seventh chute 120 </ b> G made of one kind and arranged in six stages. The seventh chute 120G constitutes a standard holder chute that accommodates only the four standard first standard lens holder 40A having the highest usage frequency (85% or more). Therefore, the seventh chute 120G is formed of the same white resin as the color of the identification member 84 of the first standard lens holder 40A, and the surface and the entire interior are colored white. The seventh connecting pin 170 of the two to the rear end surface of the chute 120G are projected as the connecting member, the pin interval is set to d _7, the connecting pin of the first to sixth chute 120 a to 120 f 170 This is different from any of the pin intervals d _{1 to} d ₆ . In addition, since the other structure is the same structure as the 1st-6th chute 120A-120F, the same code | symbol is attached | subjected about the same structural member and part, and the description is abbreviate | omitted. The number of seventh shoots 120G is not limited to six and can be increased or decreased as appropriate. Further, any one of the first to sixth chutes 120A to 120F may be taken out from the first holder supply device 62 and stacked.

  6, 7, and 9, the standard lens holder 40 or the small-diameter lens holder 41 is classified into the rear end side opening 135 c of each chute 120 of the first and second holder supply devices 62 and 63. Seven cassettes 180 (first to seventh standard holder cassettes and cassettes 180A to 180G for small diameter holders) that are slidably housed each time are detachably connected to the chute 120 at the same inclination angle.

  The cassette 180 is formed into a long square bar shape with a synthetic resin, and a holder storage groove 181 having a substantially U-shaped cross section is formed on the front surface 180a over the entire length. The holder storage groove 181 opens to the front surface 180 a and the front end 180 b of the cassette 180, and the rear end 180 c is closed by the closing plate 182.

Further, the holder storage groove 181 is formed in substantially the same shape as the holder storage groove 135 of the chute 120, so that the front and rear two protrusions 184 and 185 and the guide grooves 186 and 187 are formed on the cassette 180 on the groove lower wall 183a side. Are formed alternately over the entire length in the longitudinal direction. Further, the holder housing groove 181 is formed with a rectangular wide protrusion (rotation drop prevention portion) 188 and a guide groove 189 on the groove upper wall 183b side. The lens holder 40 (41 The same is stored sideways so that the central axis of the main body 70 is horizontal.
That is, the lens holder 40 has a fitting shaft portion 75 protruding from the front opening portion 180a of the holder storage groove 181 of the cassette 180, and the lens holding portion 72 positioned at the back side of the holder storage groove 181 of the cassette 180. It is housed in the holder housing groove 181 from the front end side opening 180b of the cassette 180 with the mating portion 82 facing upward and the fitting recess 76 facing downward. In other words, the lens holder 72 is accommodated so that the vertical width B1 thereof coincides with a scale line 195 of the cassette 180 described later. The fitting shaft portion 75 of the lens holder 40 is supported by the protrusion 184 on the front side of the cassette 180, and the flange 71 and the lens holding portion 72 of the lens holder 40 are respectively inserted into the two guide grooves 186 and 187 of the cassette 180. It will be slidably inserted. In addition, the lens holder 40 is prevented from rotating and falling off from the front opening portion 180a because the fitting portion 82 is slidably fitted to the upper ridge portion 188 of the cassette 180. Further, the flange 71 and the lens holding portion 72 are also inserted into the guide grooves 186 and 187 of the cassette 180, thereby preventing the lens holder 40 from dropping from the front opening portion 180 a of the cassette 180.

  The front end side opening 181b of the holder storage groove 181 is normally closed by a holder drop-off prevention member 190, thereby preventing the lens holder 40 (41) in the holder storage groove 181 from dropping off. The holder drop-off prevention member 190 is composed of a pin integrally having a knob 191 at the rear end, and is press-fitted from the rear side of the cassette 180 into a mounting hole 192 provided at the rear front end portion of the cassette 180, and the front end portion is inside the holder storage groove 181. The front end side opening portion 181b is closed by projecting to the front.

  On the front surface 180a of the cassette 180, a scale line 195 indicating the center position of the lens holder 40 (41) is displayed. The scale lines 195 are respectively displayed in the vertical widths B1 and B2 when the lens block of the lens holder 72 of the lens holders 40 and 41 is used, as shown in FIGS. 4 (e) and 5 (e). The cassettes 180B, 180D, and 180G that store the standard lens holder 40 are displayed at intervals of 20 mm, and the cassettes 180A, 180C, and 180F that store the small-diameter lens holder 41 are displayed at intervals of 16 mm.

At the front end of the lower surface 180 b of the cassette 180, a pair of front and rear parallel engaging grooves 196 are formed corresponding to the connecting pins 170 of the chute 120. The engaging groove 196 and the connecting pin 170 constitute a connecting portion for detachably connecting the cassette 180 to the chute 120, and the groove interval dx (see FIG. 9) is different for each of the cassettes 180A to 180G. . That is, the cassette 180A connected to the first chute 120A has a distance dx equal to the pin distance d ₁ (see FIG. 7) of the connecting pin 170 of the first chute 120A and is connected to the second chute 120B. 180B is equal to the pin spacing d ₂ distance dx is the connecting pin 170 of the second chute 120B, cassette 180G connected to ... seventh chute 120G are connecting pin spacing dx seventh chute 120G It is equal to 170 pin spacing d ₇ . Thus, the groove spacing dx of the engaging groove 196 of each cassette 180A～180G, if you set equal to the pin spacing d ₁ to d ₇ of the connecting pin 170 of the chute 120A～120G, many kinds of cassette 180 Even if it becomes, it does not have a possibility of mounting | wearing with respect to chute | shoot 120A-120G, and can connect to corresponding chute | shoot 120 reliably.

  Further, these cassettes 180A to 180G are colored in different colors depending on the types of lens holders 40 and 41 and chutes 120A to 120G to be housed as shown in FIG. That is, the first and seventh cassettes 180A and 180G that house the four-curve first standard and small-diameter lens holders 40A and 41A are all colored white, and the seven-curve second standard and small-diameter The second and third cassettes 180B and 180C for storing the lens holders 40B and 41B for use are colored in red as a whole. The third standard lens holder 40C for 11 curves and the third small diameter lens for 9 curves The fourth and fifth cassettes 180D and 180E that house the holder 41C are colored in blue, and the sixth cassette 180F that houses the 11th curve fourth small diameter lens holder 41D is colored in black. Has been.

  As described above, when the cassettes 180A to 180G are colored in the same color for each type of the lens holders 40 and 41 and the chute 120, when the lens holders 40 and 41 are stored in the cassette 180, the colors of the identification members 84 and 104 are determined. By storing the lens holders 40 and 41 in the cassette 180 having the same color as the lens 180, it is possible to prevent the lens holders 40 and 41 from being erroneously attached to the cassette 180. By connecting to, it is possible to prevent erroneous mounting of the cassette to the chute.

  In addition, since the interval between the scale lines 195 is different between the standard holder cassette and the small-diameter holder cassette, it is possible to determine whether the cassette 180 is for a standard lens lens or a small-diameter lens lens according to the interval. It is possible to prevent erroneous attachment of the standard lens holder 40 and the small diameter lens holder 41 to the cassette 180. For example, when the second small-diameter lens holder 41B having 7 curves is housed in the standard second cassette 180B, the center of the small-diameter lens holder 41B does not coincide with the scale line 195, so this is visually confirmed. By doing so, it can be determined that it is erroneously mounted.

  In such a holder housing structure of the lens layout block device 30, when the standard lens holder 40, for example, the 7-curve standard lens holder 40B is housed in the second cassette 180B, the second standard lens holder is used. The second and third cassettes 180B and 180C having the same identification color as 40B are selected. Further, the second cassette 180B having a large interval is selected by comparing whether the interval between the scale lines 195 is wide or narrow. As a result, an appropriate cassette is selected for the second standard lens holder 40B.

  Next, the holder drop-off prevention member 190 of the selected second cassette 180B is removed to open the front end side opening portion 181b of the holder storage groove 181, and the second standard lens holder 40B is stored in the holder from the front end side opening portion 181b. Store in the groove 181. When the second standard lens holder 40B is stored in a row in alignment with the second cassette 180B, the flanges 71 of the adjacent ones of the lens holders 40 and the outer periphery of the lens holding portion 72 are in contact with each other, and the center line is a scale. Coincides with line 195.

When the storage of the second standard lens holder 40B is completed, the holder drop-off prevention member 190 is attached to the second cassette 180B again to close the front end side opening portion 181b, thereby preventing the second standard lens holder 40B from dropping off. To do. In this state, the second cassette 180B is connected to the second chute 120B having the same identification color. This connection can be made with one touch by engaging the connecting pin 170 and the engaging groove 196 having the same pin interval d ₂ and groove interval dx. In this case, the third chute 120C includes an identification color second chute 120B is the same but for pin spacing d ₃ and groove spacing dx are different, the second cassette 180B is mounted erroneously third cassette 180C There is no fear.

  After the second cassette 180B is mounted on the predetermined second chute 120B, the holder drop prevention member 190 is removed from the second cassette 180B, and the front end side opening portion 181b of the holder storage groove 181 is opened. As a result, the second lens holder 40B housed in the second cassette 180B is released from the holder drop-off prevention member 190, so that it slides in the holder housing groove 181 by its own weight, and the second chute 120B It moves to the holder storage part 135 and the supply of the second lens holder 40B to the second chute 120B by the second cassette 180B is completed.

  The lens block of the lens 35 to be processed by the lens holder 40 or 41 is performed by the manipulator 48. That is, the central control device 52 performs a simulation calculation of the edging process based on the frame information about the lens to be processed 35, checks the processing interference, and the standard lens holder 40 or the small diameter suitable for the optimal edging process. The lens holder 41 is determined. For example, when manufacturing a 4 curve standard lens lens 4A, a 7 curve second standard lens holder 40B is determined. Furthermore, the normal direction at the time of blocking is calculated based on the measurement data from the lens tilt angle measuring device 46.

  When determining the second standard lens holder 40B, the central controller 52 sends a drive signal to the holder discharge device 160 of the second chute 120B to drive the holder discharge device 160. When the holder discharging device 160 is driven, the movable pin 161 moves backward to open the front end side opening 135b of the second chute 120B, and therefore the first second standard for use accommodated in the second chute 120B. The lens holder 40B slides by its own weight and moves to the holder discharge port 151b.

  Further, the central control device 52 drives the first seal supply device 53. The first seal supply device 53 is driven by a drive signal from the central control device 52 and supplies the standard lens-shaped lens elastic seal 42 to the seal attachment position.

  When the first second standard lens holder 40B is discharged to the holder discharge port 151b, the manipulator 48 is driven by a drive signal from the central controller 52 to move the holder hand 74 to the holder discharge port 151b. The fitting hole 74a of the holder hand 74 is fitted and held in the fitting shaft portion 75 of the second standard lens holder 40B housed in the holder discharge port 151b, and the standard lens holder 40B is held by the holder discharge port. Remove from 151b. Note that the positions of the holder outlets 151 a to 151 g of the holder outlet member 150 are stored in advance in the central controller 52 together with the holder information in the drive control of the manipulator 48.

  When the manipulator 48 holds the standard lens holder 40B, the manipulator 48 is conveyed and stopped above the seal sticking position of the first seal supply device 53, and then lowered to seal the lens holding surface 78 of the standard lens holder 40B. The lens is pressed against the elastic lens 42 for standard lens shape supplied to the attaching position and attached to the lens holding surface 78.

  When the sticking of the elastic seal 42 to the standard lens holder 40B is completed, the manipulator 48 moves the holder hand 74 above the lens supply position. At the lens supply position, the lens to be processed 35 is held on the outer periphery by a lens holding device (not shown) with the convex lens surface 35a facing upward. After the angle of the holder hand 74 is adjusted in three dimensions so as to coincide with the normal direction of the block position of the lens to be processed 35 by a signal from the central control device 52, the holder hand 74 is lowered to block the position of the lens to be processed 35. Then, the lens holder 40B for standard is pressed from the normal direction to bring the lens 35 to be processed into close contact with the elastic seal 42. Thus, when the lens block process is completed, the lens 35 to be processed is stored in the lens tray 58 together with the standard lens holder 40B, and is conveyed to the next process by the lens moving device 49. The next process is an edging process. When the lens to be processed 35 is attached to the lens rotation shaft of the edging apparatus 31, the edging apparatus 31 is edged into a lens shape that matches the frame shape of the spectacle frame. Then, a standard lens lens 4A is manufactured. Then, quality inspections of the optical performance and appearance performance of the manufactured standard lens lens 4A are performed, and the spectacle lens determined to be acceptable is packaged and shipped and delivered to the spectacle store 2. In addition, since it manufactures similarly about the small diameter lens lens 4B, the description is abbreviate | omitted.

  In the present embodiment, an example in which the entire surface of the cassette is colored as an identification unit for identifying the type of the cassette 180 is shown. However, the present invention is not limited to this. For example, only the front side of the cassette 180 is colored, You may stick the sticker colored in color.

  Further, in the present embodiment, the identification colors of the standard lens holder 40 and the small diameter lens holder 41 are the same color for the same curve, but the identification performance of the standard lens holder 40 and the small diameter lens holder 41 is improved. Therefore, the identification colors of the standard lens holder 40 and the small diameter lens holder 41 may be different. In that case, the chute 120 and the cassette 180 also need to have different identification colors.

  4A ... Lens for standard lens, 4B ... Lens for small-diameter lens, 30 ... Lens layout block device, 35 ... Lens to be processed, 40, 40A-40C ... Lens holder for standard, 41, 41A-41D ... For small-diameter Lens holder, 42, 43 ... elastic seal, 50 ... seal supply device, 51 ... holder supply device, 62 ... first holder supply device, 63 ... second holder supply device, 70 ... main body, 71 ... flange, 72 ... Lens holding part, 75 ... fitting shaft part, 76 ... rotation prevention part, 78 ... lens holding surface, 82 ... rotation drop-off prevention part, 84 ... identification member, 120, 120A to 120G ... chute, 170 ... connection member, 180, 180A to 180G ... cassette, 181 ... holder storage groove, 188 ... rotation drop prevention part, 190 ... holder drop prevention member, 195 ... scale line.

Claims (4)

A plurality of standard holder cassettes that slidably store a plurality of types of standard lens holders corresponding to a plurality of types of lens groups each having a plurality of processed lenses having approximate convex curves as lens groups; ,
A plurality of small-diameter holder cassettes that slidably store a plurality of types of small-diameter lens holders corresponding to a plurality of types of lens groups each having a plurality of processed lenses having approximate convex curves as lens groups; With
In the small diameter lens holder, the vertical width of the lens holding portion is set to be narrower than the vertical width of the lens holding portion of the standard lens holder,
The lens layout block, wherein the standard lens holder, the standard holder cassette, the small diameter lens holder, and the small diameter holder cassette each have an identification portion colored in the same color for each type. Device holder storage structure. In the holder storage structure of the lens layout block device according to claim 1,
On the standard holder cassette, a scale line indicating the center position of the standard lens holder is displayed at a width interval in the vertical direction of the lens holding portion of the standard lens holder, and on the small diameter holder cassette, the small diameter lens is displayed. A holder housing structure for a lens layout block device, characterized in that graduation lines indicating the center position of the holder are displayed at an interval in the vertical direction of the lens holding portion of the small-diameter lens holder. In the holder storage structure of the lens layout block device according to claim 1 or 2,
The standard holder cassette and the small-diameter holder cassette have a substantially U-shaped holder storage groove formed over the entire length in the longitudinal direction, open to the front and front end sides, and closed at the rear end side. A holder drop-off prevention member is detachably attached to the front end side opening,
The lens holder for the standard and the lens holder for the small diameter are each positioned at the lens holding portion side inside the holder storing groove of the cassette for the standard holder and the cassette for the small diameter holder, and the end on the opposite side to the lens holding portion side The holder for the lens layout block device is characterized in that the axis is stored in a state orthogonal to the longitudinal direction of the holder storage groove so that the axis protrudes from the front opening of the holder storage groove to the front of the cassette. Storage structure. In the holder storage structure of the lens layout block device according to claim 3,
Each of the holder holder grooves of the standard holder cassette and the small diameter holder cassette has a rotation drop-off prevention portion for preventing the lens holder from rotating and dropping off from the front opening portion,
The lens holder for a standard and the lens holder for a small diameter each have a fitting portion that is slidably fitted to a rotation drop-off preventing portion of the standard holder cassette and the small diameter holder cassette. Holder storage structure for layout block device.

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