JP2008110284A - Article holding device and article transporting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an article holding device capable of stably holding even an article to be transported having an irregular shape. <P>SOLUTION: The article holding device is provided with a pair of holding parts 21 opposed to each other and for holding the outer peripheral part of a base material 1 for spectacle lenses and driving parts 22 for bringing or separating the holding parts 21 close to or from each other. Each of the pair of holding parts 21 has an arm part 25 connected to each driving part 22 and two contact parts 26 provided on each arm part 25 and one holding part 21 is provided on the arm part 25 so that two contact parts 26 are independently and freely moved back and forth and an elastic member 28 is provided between the contact part 26 and the arm part 25. Then, the base material 1 for the spectacle lenses is stably held by the holding parts 21 because at least three contact parts 26 in four contact parts 26 come into contact with the outer peripheral part of the base material 1 for the spectacle lenses, the one-side contact of the contact parts 26 is prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an article holding apparatus that holds an article to be conveyed by a pair of holding units, and an article conveying apparatus that conveys an article to be conveyed using the article holding apparatus.

An article conveying apparatus that conveys an article to be conveyed such as a spectacle lens base material to a predetermined position on a line for manufacturing spectacle lenses and other lines is often used.
For example, in a line for manufacturing spectacle lenses, a coating apparatus for coating a surface of a spectacle lens base material with a coating agent is known.

This coating apparatus is a spin coater that rotates a holder holding a spectacle lens substrate and applies a coating agent to the upper surface of the spectacle lens substrate (Patent Document 1).
In the spectacle lens production line, a transport device for transporting the spectacle lens base material is disposed between the position of the holder of the spin coat device and the standby position.
This transport device includes a holding device that can be opened and closed and holds both sides of the outer peripheral portion of the eyeglass lens substrate by a single chuck having claws each having a predetermined shape.

JP 2006-231282 A

Usually, the spectacle lens base material is formed in a disk shape, and the spectacle lens base material is stably held from both sides of the outer peripheral portion by the chuck of the holding device.
However, eyeglass lenses include not only disk-shaped lenses but also deformed lenses having a substantially oval shape having a long major axis with respect to a minor axis.
If the outer periphery of the deformed lens can be in contact with at least three claws, it can be held. However, even if it is intended to be held by the chuck described above, the outer periphery of the deformed lens is equally applied to at least three claws of the chuck. Since it is not possible to contact, there is a problem that one-sided contact occurs and the deformed lens falls off the chuck.

Therefore, a method is adopted in which an irregular lens is directly adsorbed by an operator on the adsorption unit of the coating apparatus. Then, the worker becomes a source of dust and contaminates the atmosphere in the coating apparatus, so that dust or the like adheres to the lens at the time of coating, causing the appearance defect.
Thus, there is a need for a holding device that can stably hold a deformed lens without hitting it on the spectacle lens production line, and it is possible to stably feed a deformed article to be conveyed outside the spectacle lens production line. There is a need for an article holding device that can hold.

  An object of the present invention is to provide an article holding device and an article conveying apparatus that can stably hold even a deformed article to be conveyed.

  The article holding device of the present invention includes a pair of holding parts that are opposed to each other and hold an article to be conveyed, and a driving part that moves the holding parts close to and away from each other, and each of the pair of holding parts is the driving part. And at least one of the pair of holding portions, the two contact portions can be independently advanced and retracted. Provided in the arm portion, and an elastic member is provided between the abutting portion and the arm portion.

In the present invention, the pair of holding portions are separated in advance by the driving portion, and the article to be conveyed is arranged between these holding portions. Then, the drive unit is operated to bring the pair of holding units close to each other. Then, the tip portions of a total of four abutting portions respectively provided on the pair of arm portions advance toward the outer peripheral surface of the article to be conveyed, and then abut against each other. At this time, since at least one of the holding portions is provided on the arm portion so that the two abutting portions can be independently advanced and retracted, it resists the elastic force of the elastic member provided between the arm portion and the holding portion. Independently, progress is prevented.
For this reason, in the present invention, at least four of the four abutting parts abut on the outer peripheral part of the article to be conveyed, so that the abutting part does not come into contact with each other, and the article to be conveyed is stabilized by the holding part. Retained.

Here, in the present invention, it is preferable that at least one of the pair of holding portions includes a guide plate that guides the advancing and retreating of the contact portion.
In the invention with this configuration, when the abutting portion is retracted against the elastic force of the elastic member, the contact portion is along the guide plate, so that the position does not shift in a direction intersecting the advancing / retreating direction of the abutting portion.
For this reason, it is possible to more effectively prevent the contact of the contact portion.

The article to be conveyed is a spectacle lens substrate, and the pair of holding portions preferably hold the outer peripheral edge of the spectacle lens substrate.
In the invention with this configuration, since the spectacle lens substrate can be stably held, it can be used as an article holding device in a spectacle lens production line.

The article conveying apparatus of the present invention includes the article holding apparatus having the above-described configuration and a moving device that moves the article holding apparatus.
In the invention of this configuration, the spectacle lens base material stably held by the article holding device can be moved to a predetermined position without dropping.

In the present invention, the moving device includes a reciprocating mechanism that reciprocates between a set base for setting the spectacle lens base material and a coating device for coating the surface of the spectacle lens base material with a coating agent. The configuration is preferable.
In the invention of this configuration, the eyeglass lens base material can be reciprocated between the set table and the coating apparatus by the reciprocating mechanism, so that the coating operation in the coating apparatus is efficient and without intervening workers. It can be done in a clean environment.

In this invention, the structure provided with the inversion mechanism connected with the said holding | maintenance part and inverting the front and back of the said base material for spectacle lenses is preferable.
In the invention of this configuration, the coating agent is coated on one surface of the spectacle lens substrate, or the other surface of the spectacle lens substrate is reversed by reversing the front and back of the spectacle lens substrate by the reversing mechanism. Since the coating agent can be coated, the coating operation on both surfaces of the spectacle lens substrate can be efficiently performed with one apparatus.

The set table includes a placement portion on which the spectacle lens base material is placed, a position connected to the placement portion so that the spectacle lens base material can be held by the holding portion, and the spectacle lens base material. It is preferable to include a lifting mechanism that lifts and lowers the position between the position not interfering with the holding portion.
In the invention of this configuration, the spectacle lens base material is placed on the placement portion at a position “does not interfere with the holding portion”, and then the raising / lowering mechanism is operated to place the placement portion on the spectacle lens base material in the holding portion. Is moved up or down to a position where it can be held.
Therefore, in the present invention, it is efficient by operating the elevating mechanism to make it easy to hold the spectacle lens substrate with the holding unit and to make it not interfere with the holding unit holding the spectacle lens substrate. Can be done automatically.

The contact portion preferably has a structure in which a locking projection for locking the spectacle lens substrate is formed.
In the invention of this configuration, even if the outer peripheral portion and the contact portion of the spectacle lens base material slip, the eyeglass lens base material is mistakenly detached from the contact portion because it is locked by the locking protrusion. Can be prevented.

The coating apparatus includes: a holder that holds the spectacle lens substrate; a rotation mechanism that rotationally drives the holder; and the holding rod that stops at a position where the holding unit easily holds the spectacle lens substrate. A control unit that controls the rotation mechanism, and an elevating mechanism that moves the holder up and down between a position where the spectacle lens base material can be held by the holding unit and a position where the spectacle lens is coated with a coating agent The structure provided with is preferable.
In the invention of this configuration, the control unit stops the eyeglass lens base material at a position where it can be easily held by the holding unit, i.e., stops at a position where the major axis direction of the deformed lens matches the opening / closing direction of the holding unit. , Stable delivery becomes possible.

It is preferable that the contact portion is formed with a tapered portion for preventing interference with the holder.
In the invention of this configuration, when the holder approaches the contact portion, the corner portion of the contact portion does not interfere with the holder, so the outer peripheral portion of the eyeglass lens base material is disposed close to the holder. However, the spectacle lens substrate can be located deeply with respect to the contact portion.
Therefore, it is possible to prevent the spectacle lens base material from dropping from the contact portion.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic configuration of a spectacle lens manufacturing apparatus. The spectacle lens manufacturing apparatus includes a coating apparatus 10 for coating a spectacle lens base material 1, and a spectacle lens base material for the coating apparatus 10. 1 is provided. The article conveying device 20 of the present embodiment is not limited to the disc-shaped spectacle lens substrate 1 but also the spectacle lens substrate 1 for a deformed lens having a substantially elliptical shape whose major axis is longer than the minor axis (see FIG. 2) can be transported.

The coating apparatus 10 includes a tank 11 in which a coating operation is performed, and a holder 12 that holds the spectacle lens substrate 1 is disposed in the center of the tank 11.
An upper portion of the tank 11 is opened, and a discharge device 13 is disposed near the upper portion of the opening. The discharge device 13 includes a pressure tank (not shown) and nozzles 131 and 132 communicated with a tube, and is configured to move between a standby position and the upper side of the holder 12.
The nozzle 131 applies a coating agent, which will be described later, to the spectacle lens substrate 1, and the nozzle 132 applies a cleaning liquid to the spectacle lens substrate 1.

The holder 12 includes a rotating mechanism (not shown) that is housed in the casing 14 and rotates using a motor (not shown) as a power source, and a holding rod 15 connected to the rotating mechanism. The casing 14 is disposed below the tank 11, and the holding rod 15 provided in the casing 14 penetrates the bottom of the tank 11, and the upper end portion thereof is positioned inside the tank 11.
The holding rod 15 is movable up and down with respect to the casing 14, and a holder 16 is provided at an upper end portion thereof. The holder 16 is a short cylindrical member made of Teflon (registered trademark), and a taper 16A is formed at the upper end of the outer peripheral portion thereof.
The holder 16 includes a suction portion 17 on the upper surface of the shaft core portion. The suction portion 17 is formed with a suction hole (not shown), and a vacuum device (not shown) is connected to the suction hole. Therefore, the spectacle lens substrate 1 is sucked and held by the suction portion 17 by operating the vacuum device.
A motor that rotationally drives the holding rod 15 is connected to the control unit 18.
The controller 18 controls the driving of the rotation mechanism, and the number of rotations and rotation time are set according to the thickness of the layer to be coated, etc. The rotation mechanism is controlled so that the holding rod 15 stops at a position where it can be easily held.

The eyeglass lens substrate 1 has a concave surface and a convex surface, and a primer film and a hard coat film are formed on both the concave surface side and the convex surface side in this order from the surface of the plastic substrate body. . An antireflection film is formed by a coating apparatus 10 on the hard coat layer of the spectacle lens substrate 1.
The primer film is formed of urethane resin, etc., and is formed when it is necessary to improve the adhesion between the substrate body and the hard coat film or when it is necessary to improve the impact resistance. There is a case where a hard coat film is formed directly on the substrate body without forming it.
The hard coat film is formed with a thickness of, for example, about 2 μm from a silicone-based or acrylic-based material in order to prevent the completed spectacle lens from being damaged. When the hard coat film is formed directly on the substrate body, it is preferable to perform alkali treatment, acid treatment, polishing treatment with fine particles, plasma treatment, etc. on the surface of the substrate body in advance. Adhesion with the hard coat film is improved.

The antireflection film is formed as a lower refractive layer than the hard coat film, the primer film, and the base material body below it in order to prevent the surface reflection of the spectacle lens.
As will be described later, the antireflection film is applied to the lens processing surface by the coating apparatus 10 and can be formed not only as a single layer film but also as a multilayer film.
As a coating agent applied with the coating apparatus 10, a fluorine-type compound, a silane compound, etc. can be used. In the present embodiment, the silane compound is diluted with an organic solvent, hydrolyzed by adding water or thin hydrochloric acid, acetic acid, etc. as necessary, and a sol in which silica-based fine particles are colloidally dispersed in the organic solvent. After adding the surfactant, a surfactant, a UV absorber, an antioxidant, etc. are added as necessary, and the mixture is sufficiently stirred and used as a coating solution.
The film thickness of such an antireflection film is controlled within a range of ± 10 nm with respect to a predetermined film thickness of 100 nm, for example, in order to realize desired optical characteristics.
The antifouling film is obtained by adding a fluorine-containing compound as an antifouling component, and is formed as necessary as the outermost layer of the spectacle lens.

The article conveying device 20 includes an article holding device 30 that holds the spectacle lens substrate 1 and a moving device 40 that moves the article holding device 30.
The moving device 40 includes a set base 41 on which the spectacle lens substrate 1 is set, and a reciprocating mechanism 42 for reciprocating the article holding device 30 between the set base 41 and the coating apparatus 10. Has been.
The set base 41 includes a flat plate-like placement portion 43 for placing the spectacle lens substrate 1 in a substantially horizontal plane, and an elevating mechanism 44 connected to the placement portion 43 and fixed to the frame 2. ing. In the present embodiment, a rotation driving unit (not shown) may be provided in order to enable the mounting unit 43 to rotate in a horizontal plane. The rotation driving unit is an operation button (not shown) and is used for the eyeglass lens substrate 1. Adjust the posture in the horizontal plane.
The elevating mechanism 44 is configured to move up and down between an upper position where the spectacle lens substrate 1 can be held by the article holding device 30 and a lower position where it does not interfere with the article holding device 30. A gear mechanism such as a cylinder device or a rack and pinion (not shown) is provided.
The reciprocating mechanism 42 includes a rail member 45 that guides the article holding device 30 so as to freely reciprocate, and a drive mechanism (not shown) that reciprocates the article holding device 30 on the rail member 45. This driving mechanism is driven and controlled so that the spectacle lens substrate 1 held by the article holding device 30 is stopped between the upper position of the set table 41 and the upper position of the holder 16 of the coating apparatus 10.

A specific configuration of the article holding device 30 is shown in FIGS.
2 and 4 are plan views of the article holding device 30, respectively. FIG. 2 shows a state in which the eyeglass lens base material 1 is separated by the article holding device 30, and FIG. The state which hold | maintained the base material 1 is shown. FIG. 3 is a front view showing a part of the article holding device 30 in a cutaway manner.
In these figures, the article holding device 30 includes a pair of holding portions 21 that face each other and hold the outer peripheral edge portion of the spectacle lens substrate, a drive portion 22 that moves these holding portions close to and away from each other, and a holding portion. 21, a reversing mechanism 23 that reverses the front and back of the spectacle lens substrate 1, and a main body 24 that is attached to the reversing mechanism 23 and is reciprocally disposed on a rail member 45.

Each of the pair of holding parts 21 includes an arm part 25 connected to the driving part 22, and two abutting parts 26 formed of a material having excellent chemical resistance provided at two distal ends of these arm parts 25. I have. In one arm portion 25 shown on the right side in FIGS. 2 to 4, liners 29 are respectively inserted into hole portions 25 </ b> A formed at two positions toward the other arm portion 25. Pins 27 are disposed in these liners 29 so as to be able to advance and retreat, and the tip portions of these pins 27 are screwed into the contact portions 26. An elastic member 28 such as rubber is provided between the contact portion 26 and one arm portion 25, and a pin 27 passes through the elastic member 28. A cover member 251 that covers the base of the pin 27 is provided at the end of the arm 25 opposite to the side where the elastic member 28 is disposed.
A guide plate 252 for guiding the advancing / retreating of the contact portion 26 is attached to one arm portion 25. The guide plate 252 restricts the movement of the contact portion 26 in a direction perpendicular to the advancing / retreating direction (upward in FIG. 3), and the base end portion is fixed to the arm portion 25 by an adhesive or other appropriate means. Has been.

The two abutting portions 26 provided on one arm portion 25 are spaced apart from each other by a predetermined dimension L, and the two abutting portions 26 provided on the other arm portion 25 are mutually dimensioned L. Just placed apart. Two contact portions 26 are directly fixed to the other arm portion 25 by an appropriate means such as adhesive fixing or bolt fixing.
These abutting portions 26 have a surface made of a peak material covered with a Teflon sheet, and each has a nail shape with a predetermined thickness.
The contact part 26 has the same shape from the upper end to the center part of the tip part, and a locking projection 26A for locking the spectacle lens substrate 1 is formed at the center part. The locking protrusion 26A is formed in a U shape when viewed from above (see FIG. 2). A locking surface for locking the spectacle lens substrate 1 is formed from the locking protrusion 26A to the upper end.
A taper portion 26B is formed from the locking projection 26A to the lower end portion. The taper portion 26B is for preventing interference with the holder 16.

The drive unit 22 is a parallel chuck including a pair of rods 221 fixed to the base end portions of the pair of arm units 25 at substantially right angles to the arm unit 25 and a drive unit main body 222 for moving the rods 221 forward and backward. The pair of arm portions 25 are separated from each other so that the contact portion 26 is separated from the outer peripheral portion of the spectacle lens substrate 1 by a predetermined dimension (see FIG. 2), or the eyeglass lens is formed by the contact portion 26. The pair of arm portions 25 are brought close to each other so as to hold the outer peripheral portion of the base material 1 for use (see FIG. 4).
The pair of rods 221 are arranged such that their longitudinal directions are parallel to each other. The drive unit main body 222 moves the pair of rods 221 forward and backward so as to move the arm unit 25 close to and away from each other. A configuration in which a gear mechanism such as a rack and pinion is driven by a motor, or a configuration in which the gear mechanism is driven by an air cylinder or the like can be adopted.
A reversing mechanism 23 is provided between the drive unit main body 222 and the main body 24, and the reversing mechanism 23 is configured to reverse the orientation of the holding unit 21 attached via the drive unit 22 in the vertical direction by 180 degrees. The gear mechanism includes an internal gear (not shown) and a gear such as a pinion that meshes with the internal gear, and the gear mechanism is driven by an air cylinder (not shown).

Next, a method for manufacturing a plastic lens will be described.
First, a spectacle lens substrate 1 is prepared in advance by forming a primer film and a hard coat film on both surfaces of the substrate body by the same method as in the prior art.
Thereafter, an antireflection film is formed on both surfaces of the spectacle lens substrate 1 using the plastic lens manufacturing apparatus shown in FIG.
Therefore, first, the raising / lowering mechanism 44 of the cradle 41 is actuated to place the placing portion 43 in a standby position, and the eyeglass lens substrate 1 is placed on the placing portion 43 with the concave surface down and the convex surface up. Put. At this time, the major axis direction of the spectacle lens substrate 1 is arranged in accordance with the opening / closing direction of the holding portion 21. In addition, you may correct | amend the attitude | position (rotation) in the horizontal surface of the mounting part 43 as needed, In this case, the external shape of the base material 1 for spectacle lenses is recognized using the image processing apparatus which is not shown in figure. It may be a thing. Further, in order to hold the spectacle lens substrate 1 with the convex surface up by the holding portion 21, the taper portion 26B of the contact portion 26 is directed downward.

The drive unit 22 is actuated so that the pair of holding units 21 are separated from each other. In this state, the elevating mechanism 44 is actuated so that the spectacle lens substrate 1 placed on the placement unit 43 is moved to the pair. Raised so as to be positioned between the holding portions 21.
Thereafter, the drive unit 22 is operated to bring the pair of holding units 21 close to each other. Then, the four contact portions 26 provided in the pair of holding portions 21 advance toward the outer peripheral portion of the spectacle lens substrate 1. Of these, one or two of the abutting portions 26 provided on one holding portion 21 are prevented from moving forward against the elastic force of the elastic member 28, and the outer peripheral portion of the spectacle lens substrate 1 is three. Alternatively, the four abutting portions 26 are locked with a predetermined elastic force on the locking surfaces.

Further, the reciprocating mechanism 42 is operated to move the article holding device 30 toward the coating device 10. When the article holding device 30 is positioned above the coating device 10, the holder 16 of the coating device 10 is raised, and the concave surface of the spectacle lens substrate 1 is supported by the holder 16 (see FIG. 5A). The eyeglass lens substrate 1 is sucked and held by the suction portion 17 of the holder 16.
When it is confirmed that the spectacle lens substrate 1 is supported by the holder 16, the drive unit 22 is actuated to separate the pair of holding units 21 from each other so that all of the four abutting units 26 are connected to the spectacle lens base. Separate from the outer periphery of the material 1. As a result, the spectacle lens substrate 1 is removed from the pair of holding portions 21. In this state, the holder 16 is lowered to a predetermined position, the reciprocating mechanism 42 is operated, and the article holding device 30 is returned to the placement place.

When the holder 16 is lowered to a predetermined position and the article holding device 30 returns, the coating operation is performed by the coating apparatus 10.
First, the holder 12 is operated to rotationally drive the holder 16 holding the spectacle lens substrate 1, and the cleaning liquid is supplied from the nozzle 132 to the convex surface of the spectacle lens substrate 1 to perform lens cleaning. Thereafter, the holder 16 is continuously rotated, and the cleaning liquid is shaken off from the spectacle lens substrate 1 and dried.
Further, an antireflection film is formed by supplying the coating agent from the nozzle 131 to the convex surface of the eyeglass lens substrate 1 that continues to rotate.
When a predetermined amount of coating agent is supplied, the rotation of the holder 16 is stopped by the control unit 18. At this time, similarly to the case where the spectacle lens substrate 1 is supported, the holder 16 is stopped at a position where the major axis direction of the spectacle lens substrate 1 is matched with the opening / closing direction of the holding portion 21.

  Thereafter, the holder 16 is raised, and the spectacle lens substrate 1 is positioned between the pair of holding portions 21 that are separated from each other. The drive unit 22 is actuated to bring the pair of holding units 21 close to each other, and the outer peripheral part of the spectacle lens substrate 1 is locked by three or four contact parts 26 in the same manner as described above. When the spectacle lens substrate 1 is held by the holding unit 21, the suction to the spectacle lens substrate 1 by the holder 16 is stopped, and the holder 16 is lowered.

The drive unit 22 is actuated to remove the pair of holding units 21 from the spectacle lens substrate 1 and the holder 16 is lowered to a predetermined position, and then the detergent is supplied to the concave surface of the spectacle lens substrate 1 and cleaned. Then, coating is performed by supplying a coating agent. When a predetermined amount of the coating agent is supplied to the concave surface, the control unit 18 stops the rotation of the holder 16. At this time, the holder 16 stops at a position where the major axis direction of the spectacle lens substrate 1 is aligned with the opening / closing direction of the holding portion 21.
The spectacle lens base material 1 supplied with the coating agent on both the concave and convex surfaces is held by the holder 16 and rises again. After being held by the pair of holding portions 21, the suction holding by the suction portion 17 is released. The holder 16 is then lowered.

Further, the reciprocating mechanism 42 is operated to move the article holding device 30 from the coating device 10 toward the set table 41. If the article holding device 30 is positioned above the set base 41, the mounting portion 43 is raised, the spectacle lens substrate 1 is supported by the mounting portion 43, and the holding portions 21 are spaced apart from each other for the spectacle lens. The base material 1 is removed.
The spectacle lens substrate 1 coated with a coating agent for forming an antireflection film is baked. Thereby, an antireflection film is formed on the hard coat film. On the antireflection film, an antifouling film is formed as the outermost layer of the lens, and then necessary processing is performed to complete the spectacle lens.
When coating on the concave surface side, the reversing mechanism 23 is operated immediately before the reciprocating mechanism 42 moves to the coating apparatus 10 side, so that the spectacle lens substrate 1 is placed 180 so that the concave surface is upward and the convex surface is downward. Invert the degree. Thereafter, the concave surface side is coated, and the reciprocating mechanism 42 moves to the set table 41 side and then operates the reversing mechanism 23 to rotate the spectacle lens substrate 1 180 degrees so that the convex surface is upward. Is placed on the mounting portion 43. Other movements are the same as when the convex side is coated.

Therefore, in this embodiment, the following effects can be achieved.
(1) The article holding device 30 is configured to include a pair of holding portions 21 that face each other and hold the outer peripheral portion of the spectacle lens substrate 1 and a drive portion 22 that moves the holding portions 21 close to and away from each other. . The pair of holding portions 21 each have an arm portion 25 connected to the driving portion 22 and two abutting portions 26 provided on each of the arm portions 25, and two of the holding portions 21 have two The abutting portion 26 is provided on the arm portion 25 so as to be independently movable forward and backward, and an elastic member 28 is provided between the abutting portion 26 and the arm portion 25. Therefore, even if it is a deformed lens, at least three of the four abutting portions 26 abut on the outer peripheral portion of the spectacle lens substrate 1 evenly, so that the abutting portion 26 does not come into contact with each other and is held The spectacle lens substrate 1 is stably held by the portion 21.
Therefore, the spectacle lens base material 1 is not accidentally dropped from the holding portion 21 when the spectacle lens base material 1 is transported.

(2) Since the holding portion 21 provided with the elastic member 28 is provided with a guide plate 252 that guides the advancing and retreating of the abutting portion 26, the two abutting portions 26 each have an elastic force of the elastic member 28. When the advancing is restricted against the guide plate 252, since it is along the guide plate 252, it will not be displaced in a direction crossing the advancing / retreating direction of the abutting portion 26, and the contact of the abutting portion 26 will be more effective. Can be prevented.

(3) Since the object to be held by the holding unit 21 is the spectacle lens substrate 1, the article holding device 30 of the present embodiment can be used in the spectacle lens manufacturing apparatus.

(4) The moving device 40 includes a reciprocating mechanism 42 that reciprocates between the set base 41 for setting the spectacle lens base material and the coating device 10 for coating the surface of the spectacle lens base material 1 with the coating agent. Since it was provided, the coating operation in the coating apparatus 10 can be efficiently performed without intervening workers. Therefore, coating can be performed in a clean environment, and appearance quality is improved.

(5) Since the article holding device 30 includes the reversing mechanism 23 that is connected to the holding unit 21 and reverses the front and back of the spectacle lens substrate 1, the convex surface of the spectacle lens substrate 1 may be coated with a coating agent. By inverting the front and back of the spectacle lens substrate 1 by the reversing mechanism 23, the concave surface of the spectacle lens substrate 1 can be coated with a coating agent. Therefore, it is possible to efficiently perform the coating operation on both the concave and convex surfaces of the spectacle lens substrate 1 with a single device.

(6) A position where the spectacle lens substrate 1 can be held by the holding unit 21 and the position where the spectacle lens substrate 1 can be held by the holding unit 21 does not interfere with the holding unit 21. The set stand 41 was configured with an elevating mechanism 44 that elevates between the positions. Therefore, it is efficient by operating the elevating mechanism to make it easy to hold the spectacle lens substrate 1 by the holding unit 21 or to make it not interfere with the holding unit 21 holding the spectacle lens substrate 1. Can be done automatically.

(7) Since the contact portion 26 is formed with a locking projection 26 </ b> A for locking the spectacle lens substrate 1, the outer peripheral portion of the spectacle lens substrate 1 slips from the peripheral surface of the contact portion 26. However, since the spectacle lens base material 1 is locked by the locking protrusions 26 </ b> A, the spectacle lens base material 1 can be prevented from being accidentally detached from the contact portion 26.

(8) The coating apparatus 10 is configured to rotate the holder 16 that holds the spectacle lens substrate 1 and to rotate the holder 16 at a position where the holding unit 21 can easily hold the spectacle lens substrate 1. Since the control unit 18 for controlling the rotation mechanism is provided, it is possible to easily take out the irregularly shaped spectacle lens substrate 1 from the holder 16.

(9) Since the taper portion 26B for preventing interference with the holder 16 is formed in the contact portion 26, the contact portion 26 interferes with the holder 16 when the holder 16 approaches the contact portion 26. There is nothing to do. Therefore, even if the outer peripheral portion of the spectacle lens substrate 1 is close to the holder 16, the spectacle lens substrate 1 can be positioned deeply (upward) with respect to the contact portion 26. It is possible to avoid the inconvenience of the lens base material 1 being accidentally dropped by being held at the end of the contact portion 26.
(10) Since the taper 16A is formed at the upper end of the outer peripheral portion of the holder 16, also from this point, when the holder 16 approaches the contact portion 26, the contact portion 26 does not interfere with the holder 16, The same effects as described above can be achieved.

(11) Since the contact portion 26 and the arm portion 25 are connected by the pin 27 and the elastic member 28 is penetrated by the pin 27, the elastic member 28 is not accidentally detached from the holding portion 21.
(12) Since the surface of the abutting portion 26 is covered with a Teflon sheet having high chemical resistance, even when the coating agent is applied to the abutting portion 26 when the coating agent is applied to the eyeglass lens substrate 1, the abutting portion 26 The portion 26 is not corroded.
(13) Since the locking protrusions 26A are formed in a U shape when viewed from the top, not only when the eyeglass lens base material 1 is in contact with the tip portion of the contact part 26, but also the contact part Even when the spectacle lens substrate 1 is in contact with the side surface portion 26, the spectacle lens substrate 1 can be reliably locked by the locking projections 26A.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the above-described embodiment, the elastic member 28 is provided only on one of the holding portions 21, but in the present invention, the contact portions 26 of both the holding portions 21 are attached to the arm portion 25 so as to be able to move forward and backward. The elastic member 28 may be provided between the contact portion 26 and the arm portion 25. That is, the four contact portions 26 may be attached to the arm portion 25 via the elastic members 28, respectively.

In the above embodiment, the spectacle lens substrate 1 is used as the article to be conveyed. However, in the present invention, lenses other than spectacles, for example, telescope lenses and other lenses can also be used. . Furthermore, the present invention can be used for optical components other than lenses and other components.
Furthermore, what is conveyed by the present invention is not limited to irregularly shaped articles to be conveyed, and circular objects can be fully utilized.
In the present invention, the guide plate 252 may be omitted. When used, the guide plate 252 is connected to the other end of the contact portion 26 (see FIG. 3), as indicated by the imaginary line in FIG. It may be provided at the lower end) or may be provided at both upper and lower ends.

  INDUSTRIAL APPLICABILITY The present invention can be used for an apparatus for manufacturing optical parts such as spectacle lenses, telescopes, camera lenses, and other parts.

1 is a schematic configuration diagram of an eyeglass lens manufacturing apparatus including an embodiment of the present invention. The top view of the article | item holding | maintenance apparatus concerning the said embodiment. The front view which fractures | ruptures and shows a part of said goods holding | maintenance apparatus. The top view of the article | item holding | maintenance apparatus concerning the said embodiment. The front view which shows the state which supports the base material for spectacle lenses with a holder.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Base material for spectacle lenses (conveyed article), 10 ... Coating apparatus, 15 ... Holding rod, 16 ... Holder, 18 ... Control part, 20 ... Article conveyance apparatus, 21 ... Holding part, 22 ... Drive part, 23 ... Reversing mechanism, 25 ... arm portion, 26 ... abutting portion, 26A ... locking projection, 26B ... taper portion, 28 ... elastic member, 30 ... article holding device, 40 ... moving device, 41 ... set base, 42 ... reciprocating Moving mechanism, 43 ... mounting portion, 44 ... elevating mechanism, 252 ... guide plate

Claims (10)

  A pair of holding portions that face each other and hold the article to be conveyed; and a drive portion that moves the holding portions close to and away from each other, the pair of holding portions each having an arm portion coupled to the drive portion; Each of these arm portions is provided with two contact portions, and at least one of the pair of holding portions is provided on the arm portion so that the two contact portions can independently advance and retreat, An article holding device, wherein an elastic member is provided between the contact portion and the arm portion. The article holding apparatus according to claim 1,
At least one of the pair of holding portions includes a guide plate that guides the advancing and retreating of the contact portion. In the article holding device according to claim 1 or 2,
The article to be conveyed is a spectacle lens base material, and the pair of holding portions hold an outer peripheral portion of the spectacle lens base material.   An article carrying apparatus comprising: the article holding apparatus according to claim 3; and a moving device that moves the article holding apparatus. In the article conveying apparatus according to claim 4,
The moving device includes a reciprocating mechanism that reciprocally moves between a set base for setting the spectacle lens base material and a coating device for coating a surface of the spectacle lens base material with a coating agent. Article conveying apparatus. In the article conveying apparatus according to claim 5,
An article conveying apparatus comprising: a reversing mechanism that is connected to the holding unit and reverses the front and back of the spectacle lens substrate. The article conveying device according to claim 6,
The set table includes a placement portion on which the spectacle lens base material is placed, a position connected to the placement portion so that the spectacle lens base material can be held by the holding portion, and the spectacle lens base material. And an elevating mechanism for elevating the position between the position and the position not interfering with the holding portion. In the article conveyance device according to any one of claims 4 to 7,
The article conveying apparatus according to claim 1, wherein the contact portion is formed with a locking projection for locking the spectacle lens substrate. In the article conveyance device according to any one of claims 5 to 8,
The coating apparatus includes: a holder that holds the spectacle lens substrate; a rotation mechanism that rotationally drives the holder; and the holding rod that stops at a position where the holding unit easily holds the spectacle lens substrate. A control unit that controls the rotation mechanism, and an elevating mechanism that moves the holder up and down between a position where the spectacle lens base material can be held by the holding unit and a position where the spectacle lens is coated with a coating agent An article conveying device comprising: The article conveying apparatus according to claim 9, wherein
The article conveying apparatus according to claim 1, wherein the contact portion is formed with a tapered portion for preventing interference with the holder.

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