JP4879296B2 - Eyeglass lens ditch machine - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a spectacle lens groove excavator that engraves a groove into which a wire fits on a lens peripheral end surface, which is necessary when the spectacle lens is mounted on a wire frame.

  There are various types of spectacle frames, and one of them is a wire frame type in which a synthetic resin wire is hung on a lens and fixed to the spectacle frame. In order to attach a spectacle lens to such a spectacle frame, it is necessary to cut a groove into which a wire is fitted on the peripheral end surface of the spectacle lens.

  A spectacle lens grooving machine is used to engrave such grooves.

  The spectacle lens grooving machine includes a chuck rotating mechanism that holds a lens and rotates in a circumferential direction, a disk-shaped cutter that engraves a groove on a peripheral end surface of the lens, and a groove engraving position of the cutter is the position of the lens. A guide roller is provided for guiding the cutter so as to follow the center of the plate thickness or either the front surface or the back surface.

  As a recent trend, an elongated lens that is long on the left and right and has a small top-and-bottom dimension is preferably used, and the following problems have been pointed out when grooves are engraved in the elongated lens.

  First, an outline of a spectacle lens trench machine will be described with reference to FIGS.

  Reference numeral 1 denotes a chuck head having a chuck rotating mechanism, 2 denotes a lens rotating shaft, and 3 denotes a lens chuck. The chuck head 1 is movable in the horizontal direction.

  Reference numeral 4 denotes an eyeglass lens, 5 and 5 'denote guide rollers that rotate while holding the eyeglass lens 4 from the left and right, 6 denotes a cutter that rotates about the cutter shaft 7, and 8 denotes a cutter cover.

  For example, when the guide roller 5 is constrained in the horizontal direction and the guide roller 5 ′ is supported so as to be displaceable in the horizontal direction, the guide roller 5 ′ is displaced in the horizontal direction in response to a change in the thickness of the spectacle lens 4. To do. Therefore, since the horizontal position of the surface (convex surface: right side surface in FIG. 6) of the spectacle lens 4 does not change, the groove is carved in a state following the lens surface. When the guide rollers 5 and 5 'are supported so as to be displaced symmetrically, a groove is formed in the center of the lens peripheral end surface.

  As described above, as a recent trend, a long and narrow lens is preferred, and a state in which grooves are formed in the long and narrow lens is shown in FIG.

  When a groove is formed in the elongated spectacle lens 4, in the state of the spectacle lens 4, a line connecting the cutter 6 and the lens rotation center (hereinafter referred to as a grinding center line 9), the cutter 6, and the spectacle lens 4 The position in contact with is shifted from the grinding center line 9 by a. Further, when the contact position is shifted by a, the spectacle lens 4 is separated from the cutter 6, and when the spectacle lens 4 is separated from the cutter 6, the guide roller 5 and the spectacle lens 4 are in contact with each other. The position is shifted by b with respect to the grinding center line 9.

  FIG. 8 is a schematic diagram showing a contact state between the spectacle lens 4 and the guide roller 5. When the contact position between the spectacle lens 4 and the guide roller 5 is shifted by b, the guide roller 5 Only e is bitten from the front side toward the back side.

  In FIG. 8, although the spectacle lens 4 is shown as a flat surface, it is actually curved like the spectacle lens 4 ', and the guide roller 5 is further engaged from the front surface to the back surface of the spectacle lens 4'.

  Therefore, when the spectacle lenses 4 and 4 ′ are rotated, the spectacle lenses 4 and 4 ′ cause a phenomenon of climbing on the upper surface of the guide roller 5, and the guide roller 5 comes off the spectacle lens 4, In some cases, the guide roller 5 loses its function as a guide and the groove cannot be ground.

  In view of such circumstances, the present invention provides a spectacle lens grooving machine that can reliably engrave grooves without impairing the function of the guide roller even when grooves are engraved in an elongated spectacle lens. It is.

  The present invention includes a main body, a chuck head supported by the main body so as to be tiltable and movable in the horizontal direction, a chuck rotating mechanism provided on the chuck head and rotatably supporting a lens, and the main body A guide unit provided on the peripheral edge surface of the spectacle lens, and a cutter that engraves a groove on the peripheral end surface of the spectacle lens, the guide unit from the horizontal direction in a state where the peripheral end surface of the spectacle lens is in contact with the cutter It has a pair of left and right guide rollers that rollably abuts on both surfaces of the spectacle lens and sets the position of the cutter with respect to the peripheral end surface of the spectacle lens, and the guide rollers move away from the lens peripheral end surface as they move away from the lens. The present invention relates to a spectacle lens grooving machine inclined in a direction.

  The present invention also relates to a spectacle lens trenching machine in which the unit substrate has a hemispherical dome-shaped cutter cover, and the peripheral edge of the cutter protrudes from the cutter cover, and the unit substrate is tiltable. And an inclination adjusting means. The inclination adjusting means is used to change the inclination of the unit substrate so that the projection amount of the cutter can be adjusted. And a pair of arms provided so as to be rotatable in the horizontal direction, a semicircular link plate that rotates integrally with the arms, and at least one coupling pin. The left and right arms can be engaged with each other, and the left and right arms can be individually engaged.When the coupling pin is engaged with the left and right semicircular link plates, the left and right arms are Symmetry Rotated, when engaged in one of the arms of the coupling pin, it is fixed engaged arms, but according to the trenching machine of a spectacle lens the other arm becomes rotatable.

  According to the present invention, a main body portion, a chuck head supported by the main body portion so as to be tiltable and movable in a horizontal direction, a chuck rotating mechanism provided on the chuck head and rotatably supporting a lens, A guide unit provided in the main body, and a cutter that engraves a groove in a peripheral end surface of the spectacle lens, the guide unit in a horizontal direction with the peripheral end surface of the spectacle lens in contact with the cutter And a pair of left and right guide rollers for setting the position of the cutter with respect to the peripheral end surface of the spectacle lens, the guide rollers from the lens peripheral end surface as they move away from the lens. Since it is tilted away from the lens, the groove can be surely engraved on the peripheral end surface of the spectacle lens, and when the groove is engraved on the peripheral end surface of the elongated lens, the lens is guided. It prevents the ride La, it is possible to groove processing for the elongated lens. Further, since interference between the lens support mechanism such as a chuck and the guide roller can be avoided, grooving can be performed without re-chucking even at a portion where the lens diameter is small, and the grooving efficiency is improved.

  According to the present invention, the unit substrate has a hemispherical dome-shaped cutter cover, and the peripheral edge of the cutter is arranged so as to protrude from the cutter cover. Therefore, the depth of the groove is regulated by the protruding amount of the cutter. Groove processing with a uniform depth is possible.

  According to the present invention, the unit board is supported so as to be tiltable and has an inclination adjusting means, and the inclination of the unit board is changed by the inclination adjusting means so that the protrusion amount of the cutter can be adjusted. The desired groove depth can be easily processed.

  According to the present invention, the guide roller is rotatably supported, a pair of arms provided to be rotatable in the horizontal direction, a semicircular link plate that rotates integrally with the arm, and at least one coupling pin. Further, the coupling pin can be engaged with the left and right semicircular link plates and can be engaged with the left and right arms individually, and the coupling pin can be engaged with the left and right semicircular link plates. When engaged, the left and right arms rotate symmetrically, and when the coupling pin is engaged with one of the arms, the engaged arm is fixed and the other arm is rotatable, Excellent effects such as easy selection of the groove thickness following the center of the thickness of the spectacle lens, the lens outer surface or the lens inner surface are exhibited.

1 is a side view of a spectacle lens ditch machine in which the present invention is implemented. FIG. It is a top view of the trench machine of the front spectacle lens. It is a top view of the unit board | substrate used for the trench machine of this spectacle lens. It is a side view of the unit substrate. It is an AA arrow line view of FIG. It is an AA arrow equivalent view of FIG. 2 in the conventional trench lens ditch machine. It is explanatory drawing which shows the relationship between an elongate lens, a cutter, and a guide roller. It is explanatory drawing which shows the relationship between the elongate lens, the guide roller, and the amount of engagement of a guide roller.

  Embodiments of the present invention will be described below with reference to the drawings.

  An example of a spectacle lens trench machine in which the present invention is implemented will be described with reference to FIGS.

  In addition, the same code | symbol is attached | subjected to what is shown in FIG. 6, and description is abbreviate | omitted about the detail.

  A chuck head 1 is rotatably provided on a main body 11 via a head rotating shaft 12, and the chuck head 1 is supported by a head rotating shaft 12 so as to be horizontally displaced. Lens chucks 3 and 3 are provided at the tip of the head rotation shaft 12, and the spectacle lens 4 is held between the lens chucks 3 and 3, and the spectacle lens 4 is rotatable about the lens rotation shaft 2. Yes. The lens rotation shaft 2, the lens chuck 3 and the like constitute a chuck rotation mechanism. The lens rotating shaft 2 is rotated by a lens rotating motor (not shown).

  A guide unit support shaft 13 is provided in the main body 11 in parallel with the head rotation shaft 12, and a guide unit 14 is provided up and down via the guide unit support shaft 13.

  A concave portion 15 is formed below the guide unit 14 of the main body 11, a cutter shaft 7 is provided so as to protrude into the concave portion 15, and the cutter 6 is fixed to the tip of the cutter shaft 7. The cutter shaft 7 is rotated by a cutter drive motor (not shown) provided in the main body 11. The cutter shaft 7 is inclined with respect to the horizontal so that the cutter 6 is substantially perpendicular to the peripheral end surface of the spectacle lens 4.

  Next, the guide unit 14 will be described.

  A unit substrate 17 is provided so as to be freely raised and lowered around the guide unit support shaft 13, and a pair of arms 18 are provided on the unit substrate 17 via a shaft 19 so as to be rotatable in the horizontal direction. A roller support member 20 is rotatably provided at an end portion of the arm 18 via an intermediate pin 21, and the guide roller 10 is rotatably provided on the roller support member 20.

  The roller support member 20 is rotated and displaced with respect to the arm 18 by a roller position adjusting screw 22. Therefore, if the arm 18 is rotated, the arm 18 and the roller support member 20 and the guide roller 10 rotate integrally, and if the roller position adjusting screw 22 is rotated, the roller support member 20 is Rotating relative to the arm 18, the horizontal position of the guide roller 10 is displaced.

  The pair of arms 18 and 18 are integrally provided with semicircular link plates 23 and 23, respectively, and each semicircular link plate 23 is provided with a notch 24, and the positions of the two notches 24 and 24 are provided. The coupling pin 25 can be inserted into and removed from the recess formed by the cutout portions 24, 24 in a state where the two are matched. By fitting the coupling pin 25 into the recess, the arms 18 and 18 rotate synchronously and symmetrically.

  Further, if the coupling pin 25 is removed, the arms 18 and 18 can be freely rotated independently. The coupling pin 25 is engaged with the arm 18 from the back side of the unit substrate 17, and the arm 18. Each can be fixed. When one of the arms 18 is engaged by the connecting pin 25, the other arm 18 is rotatable. The pins individually engaged with the arms 18 may be different pins from the coupling pins 25.

  Therefore, when the coupling pin 25 is fitted into the notches 24 and 24, the guide rollers 10 and 10 move symmetrically, and the center between the guide rollers 10 and 10 coincides with the cutter 6. To do. That is, the groove 26 is formed in the center of the thickness of the peripheral end surface of the spectacle lens 4. Further, when any one of the arms 18 is fixed, the guide roller 10 on the fixed side rolls on the surface of the spectacle lens 4 at the fixed position, so that the groove 26 comes into contact with the fixed guide roller 10. It is engraved at a position that follows the surface.

  A cutter cover 8 is provided below the guide roller 10 and is fixed to the unit substrate 17. The cutter cover 8 has a hemispherical dome shape, covers the cutter 6, and only the peripheral edge of the cutter 6 is exposed from the cutter cover 8.

  In the figure, reference numeral 27 denotes a lock lever. The lock lever 27 can lock the arms 18 and 18 when the guide rollers 10 and 10 are flat. In the figure, reference numeral 28 denotes a level adjustment knob as an inclination adjusting means for changing the inclination of the unit substrate 17. By adjusting the level adjustment knob 28, the height of the level adjustment knob 28 changes. Then, the unit substrate 17 is tilted to displace the height position of the guide roller 10, and the protrusion amount of the cutter 6 from the cutter cover 8, that is, the cutting depth of the cutter 6 (depth of the groove 26). ) Is changing.

  Reference numeral 29 denotes a lens chucking knob for chucking the spectacle lens 4 on the lens chuck 3.

  Next, the guide roller 10 will be described with reference to FIGS.

  The diameter of the guide roller 10 in this embodiment is larger than the diameter of the conventional guide roller 5 (see FIG. 8).

  Increasing the diameter of the guide roller 10 makes the engagement amount e ′ of the guide roller 10 smaller than the conventional engagement amount e. Therefore, by increasing the diameter of the guide roller 10, it is difficult for the spectacle lens 4 to ride on the upper surface of the guide roller 10. The diameter of the guide roller 10 is about 1.5 to 2.5 times the diameter of the conventional guide roller 5.

  Further, in this embodiment, as shown in FIG. 5, the guide roller 10 is inclined so as to be lowered as it is separated from the spectacle lens 4. The inclination angle is preferably about 5 ° to 20 ° with respect to the horizontal.

  By inclining, the upper surface of the guide roller 10 moves away from the lens peripheral end surface as the distance from the lens surface increases. Even if the guide roller 10 is caught, the spectacle lens 4 remains on the upper surface of the guide roller 10. The eyeglass lens 4 is prevented from climbing on the upper surface of the guide roller 10.

  When the elongated lens is chucked, the distance from the outer peripheral surface of the lens chuck 3 to the peripheral end surface of the spectacle lens 4 is remarkably reduced at the lens short diameter portion (see FIG. 7).

  By inclining the guide roller 10, interference between the guide roller 10, the roller support member 20 and the chuck head 1 or the lens chuck 3 is avoided, and the guide roller 10 also functions as a guide even at a short diameter portion of an elongated lens. Not lose.

  Conventionally, there is interference between the lens chuck 3, the guide roller 5, the roller support member and the guide roller 5, and it is necessary to re-chuck the lens multiple times. The groove 26 can be engraved and work efficiency is improved.

  Although not particularly illustrated, an operation panel is provided on the front surface of the main body 11, and various operation SW such as a lens rotation SW and a cutter SW are provided on the operation panel.

  Hereinafter, an operation for forming the groove 26 in the peripheral end surface of the spectacle lens 4 will be described.

  While the chuck head 1 is lifted, the spectacle lens 4 is held between the lens chucks 3 and 3. In this case, the position of the chuck is approximately the center of the spectacle lens 4.

  With the guide rollers 10, 10 open, the chuck head 1 is lowered, the eyeglass lens 4 is brought into contact with the cutter 6, and the eyeglass lens 4 is held by the guide roller 10. The fine adjustment of the position of the guide roller 10 is performed by the roller position adjusting screw 22.

  Whether the engraved position of the groove 26 is set to the center of the lens peripheral end surface or the front or back surface is set in advance by the engagement position of the coupling pin 25. The depth of the groove 26 is set by the amount of protrusion of the cutter 6 from the cutter cover 8.

  A lens rotation SW (not shown) is turned on to rotate the eyeglass lens 4, and a cutter SW (not shown) is turned on to rotate the cutter 6. As the spectacle lens 4 rotates once, the groove 26 is formed on the entire circumference of the lens peripheral end surface.

  As described above, since interference between the guide roller 10 and the roller support member 20 and the chuck head 1 or the lens chuck 3 can be avoided, even with an elongated lens, a groove is formed in the entire circumference of the lens peripheral end surface with a single chuck. 26 can be engraved.

DESCRIPTION OF SYMBOLS 1 Chuck head 2 Lens rotating shaft 3 Lens chuck 4 Eyeglass lens 6 Cutter 8 Cutter cover 9 Grinding center line 10 Guide roller 11 Main body part 12 Head rotating shaft 13 Guide unit support shaft 14 Guide unit 18 Arm 19 Shaft 20 Roller support member 22 Roller Position adjusting screw 23 Semi-circular link plate 25 Connecting pin 29 Lens chucking knob

Claims (4)

  A main body, a chuck head supported by the main body so as to be tiltable and movable in a horizontal direction, a chuck rotating mechanism provided on the chuck head and rotatably supporting a lens, and provided on the main body; A guide unit; and a cutter that engraves a groove in a peripheral end surface of the spectacle lens, and the guide unit is configured so that both sides of the spectacle lens are viewed from a horizontal direction with the peripheral end surface of the spectacle lens in contact with the cutter. And a pair of left and right guide rollers for setting the position of the cutter with respect to the peripheral end surface of the spectacle lens, and the guide rollers are inclined in a direction away from the lens peripheral end surface as they move away from the lens. A spectacle lens grooving machine.   2. The spectacle lens trench excavator according to claim 1, wherein the unit substrate has a hemispherical dome-shaped cutter cover, and the peripheral portion of the cutter protrudes from the cutter cover.   3. The eyeglass lens groove according to claim 2, wherein the unit substrate is supported so as to be tiltable and has an inclination adjusting means, and the inclination adjusting means can change the inclination of the unit substrate to adjust the protrusion amount of the cutter. Moat.   The coupling roller further includes a pair of arms that rotatably support the guide roller and that can be rotated in the horizontal direction, a semicircular link plate that rotates integrally with the arm, and at least one coupling pin. Can be engaged with the left and right semicircular link plates and can be engaged with the left and right arms individually. When the coupling pin is engaged with the left and right semicircular link plates, 2. The eyeglass lens groove according to claim 1, wherein the arm rotates symmetrically, and when the coupling pin is engaged with one of the arms, the engaged arm is fixed and the other arm is rotatable. Machine.

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