JP4331422B2 - Workpiece pasting method and work piece pasting apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for attaching a workpiece to which a lens material, which is a workpiece, is attached to an attachment tray used in a lens polishing apparatus, and a workpiece attaching device.
[0002]
[Prior art]
Conventionally, as a method and apparatus of this type, for example, Japanese Patent Publication No. 5-67379 discloses the following technique. That is, as shown in FIG. 6, the upper surface is attached to the lower surface of the lens material 54 which is conveyed by vacuum suction by the lens holding device 53, and enters and leaves the dissolution tank 51 containing the heat-soluble adhesive 62. After applying the hot-melt adhesive sticking agent 62 adhered to the end face of the applying rod 52 to be applied, as shown in FIG. Centering is performed by centering claws 91 and 92 while pressing on the surface, and the lens material 54 is pasted on the lens pasting plate 58 by cooling.
[0003]
[Problems to be solved by the invention]
However, the above prior art has the following problems. That is, since the heat-soluble adhesive agent 62 melted on the lower surface in a state where the lens material 54 is vacuum-adsorbed is applied on the end face of the application rod 52, the portion immediately after this where the heat-soluble adhesive agent 62 contacts the lens material 54 Then, the material is cooled and cured, and the viscosity locally increases. As a result, the lens material 54 sticks to the application rod 54 side, and the lens material 54 cannot easily be conveyed onto the lens attaching plate 58.
[0004]
The vacuum suction by the lens holding device 53 basically uses the action of atmospheric pressure, and since the suction force is proportional to the contact area with the lens material 54, the phenomenon described above is, for example, less than 5 mm in diameter. The smaller the lens material 54, the more frequently it occurs, and therefore, it is not suitable for attaching a small lens material 54.
[0005]
The present invention has been made in view of the above circumstances, and includes a method for pasting a workpiece and a device for pasting a workpiece that can be reliably stuck to a pasting plate even in the case of a small lens material. It is intended to provide.
[0006]
[Means for Solving the Problems]
The invention described in claim 1 is a method of attaching a workpiece to which a lens material as a workpiece is attached to an attaching plate, wherein the upper surface of the lens material is held by a holding and conveying mechanism and the lower surface thereof. Apply a heat-soluble adhesive to the lens with a coating rod, hold the outer periphery of the lens material coated with the heat-soluble adhesive with a chuck device, restrain the lens, and then attach the lens material. The lens material is affixed to the affixing dish after being transported onto the dish, and the lens material and the affixing dish are centered by holding the outer periphery of the lens material and the affixing dish together in a pair of centering claws The lens material and the attaching plate are cooled and hardened while maintaining the state of pressure bonding and centering between the lens material and the attaching plate.
[0007]
According to the present invention, the upper surface of the lens material is held by the holding and conveying mechanism, and the heat-dissolving adhesive is applied to the lower surface of the lens material by the application rod, and the outer periphery of the lens material is applied while being held and restrained by the chuck device. After removing the rod, it is transported onto the heating plate by the holding and transport mechanism, and the lens material is heat-dissolving because crimping, centering, and pasting are performed in this order. This eliminates the inconvenience of adhering to the application rod due to the adhesive force of the adhesive, allows the lens material to be accurately attached to the application plate, and can be applied to a lens material for forming a small lens. A method of attaching a workpiece can be provided.
[0008]
The invention described in claim 2 is a workpiece pasting device for pasting a lens material, which is a workpiece, to a pasting plate placed on a mounting table, and is melted on the lens material pasting surface. Opening and closing chuck device that holds the outer periphery of the lens material coated with the heat-soluble adhesive agent and restrains the lens material when the application rod is detached Heating means for heating the sticking plate to a temperature exceeding the melting temperature of the heat-dissolvable sticking agent; adsorption holding of the lens material; conveyance from the lens material coating mechanism to the upper side of the sticking plate; A holding and conveying mechanism for pressing the material to the affixing tray, a centering mechanism for clamping the lens material and the affixing tray that are pressed against each other with a pair of centering claws, and the centering mechanism Maintain the centering Lens material, is characterized in that it has a cooling mechanism section for cooled by blowing a cooling medium to the pasting dish to cure the hot melt sticking agent with.
[0009]
According to the present invention, the upper surface of the lens material is held by the holding and conveying mechanism, and the heat-dissolving adhesive is applied to the lower surface of the lens material by the application rod, and the outer periphery of the lens material is applied while being held and restrained by the chuck device. After removing the rod, it is transported onto the affixing plate heated by the holding and conveying mechanism unit, crimped to the affixing plate, centered by the centering mechanism unit, and pasting processing by spraying the cooling medium of the cooling mechanism unit This eliminates the inconvenience that the lens material adheres to the application rod due to the adhesive force of the heat-soluble adhesive, and allows the lens material to be attached to the application plate accurately. Thus, it is possible to provide a workpiece pasting device that can be applied to a lens material for forming a small lens.
[0010]
According to a third aspect of the present invention, there is provided a workpiece pasting apparatus according to the second aspect, wherein the chuck device operates in conjunction with a holding and conveying mechanism unit, and is attached to the lens when the application rod is detached. The lens material is also gripped when the material is transported to the affixing tray.
[0011]
According to the present invention, in addition to exhibiting the effect of the invention described in claim 2, it is possible to reliably hold the lens material when the lens material is transported to the affixing tray by the holding and transport mechanism.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
[0013]
(Embodiment 1)
(Constitution)
The configuration of the first embodiment of the present invention is shown in FIG. 1, FIG. 2, and FIG.
[0014]
FIG. 1 is a cross-sectional view showing a coating mechanism part as a main part of the first embodiment. FIG. 2 is a cross-sectional view showing a centering mechanism part which is another main part of the first embodiment, and FIG. 3 is a cross-sectional view showing a centering mechanism part and a cooling mechanism part which are other main parts of the first embodiment.
[0015]
In FIG. 1, reference numeral 1 denotes a dissolution tank that accommodates and dissolves the hot-melt adhesive 12 and is heated and held at a required temperature by a heater (not shown).
[0016]
Reference numeral 2 denotes an application rod for applying the heat-soluble adhesive 12 to the lens, and is arranged to be driven up and down by an elevating device such as an air cylinder (not shown).
[0017]
Reference numeral 3 denotes a lens holding device that sucks, holds, and conveys the lens material 4 by a vacuum suction operation. The lens holding device 3 is connected to a vacuum source (not shown) and a valve that controls the vacuum source, and is also connected to a lifting device including an air cylinder (not shown). The lens material 4 is held and transported by being mounted on an X and Y robot. The lens holding device 3, the vacuum source, the valve, the lifting device, and the X and Y robot constitute a holding and conveying mechanism.
[0018]
Reference numeral 5 denotes a chuck device, which is fixedly disposed in the vicinity of the dissolution tank 1 through a heat insulating support member 6 so that a claw 5a at the tip thereof opens and closes in the direction perpendicular to the paper surface immediately above the coating rod 2.
[0019]
In FIG. 2, reference numeral 7 denotes a mounting table on which the attaching plate 8 is mounted and is positioned roughly in the horizontal direction. 91 and 92 constitute a centering mechanism that is opened and closed symmetrically above and below the mounting table 7. A pair of centering claws, which are arranged directly above the positioning hole 7a of the mounting table 7, and are symmetrically arranged concave portions 91a which are respectively positioned at the height facing the bonding boundary surface between the inner lens material 4 and the bonding plate 8. 92a.
[0020]
In FIG. 2, reference numeral 10 denotes a hot air nozzle, which is disposed in the vicinity of the positioning hole 7 a of the mounting table 7 with its front end directed toward the upper center of the attaching plate 8, and the rear end side of the hot air nozzle is illustrated. It is connected to the omitted air supply device and valve. The hot air nozzle 10 includes a heater (not shown). Further, reference numeral 11 denotes a cold air nozzle constituting the cooling mechanism, which is disposed in the vicinity of the positioning hole 7a of the mounting table 7 with its tip directed toward the upper center of the affixing plate 8, and an air supply not shown in the figure. Connected to device and valve.
[0021]
(Function)
The operation of the first embodiment configured as described above will be described below.
[0022]
The hot-dissolving adhesive 12 is preliminarily heated and dissolved in the dissolution tank 1 at a temperature higher than the melting temperature, and the coating rod 2 is melted as shown by the dotted line in FIG. An elevating device (not shown) is actuated and lowered so as to dive below the liquid level.
[0023]
On the other hand, as shown in FIG. 2, the attaching plate 8 is placed on the mounting table 7 with the centering claws 91 and 92 opened, and is roughly positioned in the horizontal direction through the positioning holes 7 a and connected to the hot air nozzle 10. The heated heater and valve are operated to blow hot air around the upper part of the sticking plate 8 to heat the hot melt sticking agent 12 to a temperature higher than the melting temperature.
[0024]
Here, the claw 5a of the chuck device 5 is opened, and the lens material 4 is moved from the lens supply pallet (not shown) by the lens holding device 3, the lifting device (not shown), and the X and Y robots as shown in FIG. Then, the claw 5a is closed and the outer periphery of the lens material 4 is gripped. At substantially the same time, the applicator bar 2 is lifted by operating a lifting device (not shown). An adhesive 12 is applied to the lower surface. Next, the elevating device is acted again to lower the coating rod 2 and remove it from the lens material 4. At this time, since the outer periphery of the lens material 4 is gripped by the claw 5a, it is possible to prevent the lens material 4 from sticking to the application rod 2 and being detached downward from the lens holding device 3.
[0025]
Thereafter, after opening the claw 5a, the lens holding device 3 is raised, the lens material 4 is conveyed onto the affixing plate 8 shown in FIG. 2, and a heater and a valve connected to the hot air nozzle 10 are operated to operate the hot air. Is stopped, the lens holding device 3 is lowered again, and the lens material 4 is bonded to the attaching plate 8 by pressure.
[0026]
Then, as shown in FIG. 3, the centering claws 91 and 92 are closed and the lens material 4 is centered so as to be coaxial with the attaching plate 8. At this time, due to the presence of the recesses 91a and 92a, the sticking agent 12 protruding from between the lens material 4 and the sticking plate 8 is prevented from adhering to the centering claws 91 and 92, and accurate centering is performed. .
[0027]
While maintaining the centered state in this manner, the lens material 4 is cooled by operating the valve connected to the cold air nozzle 11 to complete the curing of the adhesive 12, and finally the centering claws 91 and 92 are attached. The lens holding device 3 is lifted after the vacuum holding state by the lens holding device 3 is released, and the lens material 4 and the pasting plate 8 that have been pasted are taken out from the positioning hole 7a.
[0028]
(effect)
With the above operation, according to the first embodiment, it is possible to prevent the sticking of the adhesive 12 to the application rod 2 and the separation from the lens holding device 3, which is suitable for processing a small lens. .
[0029]
(Embodiment 2)
(Constitution)
The configuration of the second embodiment of the present invention is shown in FIGS. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
[0030]
FIG. 4 is a cross-sectional view showing an application mechanism part as a main part of the second embodiment, and FIG. 5 is a cross-sectional view showing a centering and hardening part as another main part of the second embodiment.
[0031]
Reference numeral 15 denotes a chuck device, which is driven through the support member 16 so as to be driven up and down by a lifting device comprising an air cylinder or the like mounted on an X, Y robot (not shown) together with the lens holding device 3 and its lifting device. The claw 15a at the tip of the chuck device 15 is configured to open and close in a direction perpendicular to the paper surface immediately above the application rod 2. Other configurations are the same as those in the first embodiment.
[0032]
(Function)
Also in the second embodiment, as in the first embodiment, the adhesive 12 is dissolved in the dissolution tank 1 so that the tip 2a of the application rod is submerged below the surface of the solution, and the application is performed. The plate 8 is heated to a temperature above the melting temperature of the adhesive 12 on the mounting table 7.
[0033]
Here, in a state where the claw 15a of the chuck device 15 is opened, the lifting / lowering device (not shown) is actuated to raise the lens material 4 so that the lens material 4 is positioned immediately above the application rod 2 as shown in FIG. The chuck device 15 is lowered, the claw 15a is closed, the outer periphery of the lens material 4 is gripped, and the application rod 2 is raised almost simultaneously with this to apply the adhesive 12 to the lower surface of the lens material 4. .
[0034]
Next, the lifting / lowering device is acted again to lower the coating rod 2 and remove it from the lens material 4. At this time, as in the first embodiment, the lens material 4 is prevented from being detached from the lens and the holding device 3.
[0035]
Thereafter, the claw 15a is opened to raise the lens holding device 3, and the chuck 15 is further raised to grip the outer periphery of the lens material 4 again, and then the lens material 4 is conveyed onto the attaching plate 8 shown in FIG. Similarly to the first embodiment, the hot air for heating the affixing plate 8 is stopped, the claw 15a is opened, and then only the lens holding device 3 is lowered to press the lens material 4 onto the affixing plate 8.
[0036]
Then, as in the first embodiment, the lens material 4 and the attaching plate 8 are centered, and the lens material 4 is attached to the attaching plate 8 by performing a cooling process, and the lens material that has been attached is completed. 4 and the pasting plate 8 are taken out.
[0037]
(effect)
Also in the second embodiment, the same effect as in the first embodiment can be obtained, and further, the lens material 4 can be reliably held by the gripping operation of the claw 15a during the conveyance by the X and Y robots (not shown). is there. When the lens material 4 is vacuum-sucked by the lens holding device 3, taken out from the lens supply pallet, lifted, and transported to the position of the application rod 2, the lens material 4 is similarly gripped by the claw 15 a. It is possible to ensure retention.
[0038]
【The invention's effect】
As described above, according to the present invention, there is no inconvenience that the lens material adheres to the application rod due to the adhesive force of the heat-soluble adhesive, and the lens material is accurately attached to the application plate. Thus, it is possible to provide a method and apparatus for attaching a workpiece that can be applied to a lens material for forming a small lens.
[0039]
Moreover, according to this invention, in addition to the effect of the sticking apparatus of the said invention, the holding | grip of the lens material at the time of the conveyance to the sticking plate of the lens material by a holding | maintenance conveyance mechanism part can be performed reliably.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a configuration of a coating mechanism unit according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view showing the configuration of the first embodiment of the present invention.
FIG. 3 is a cross-sectional view showing the operation of the first embodiment of the present invention.
FIG. 4 is a cross-sectional view showing a configuration of a second embodiment of the present invention.
FIG. 5 is a cross-sectional view showing the operation of the second embodiment of the present invention.
FIG. 6 is a cross-sectional view showing a conventional lens material pasting apparatus.
FIG. 7 is a cross-sectional view showing a centering and pasting state in a conventional lens material pasting apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Dissolution tank 2 Coating stick 3 Lens holding device 4 Lens material 5 Chuck device 6 Heat insulating support member 7 Mounting table 8 Attaching plate 10 Hot air nozzle 11 Cold air nozzle 12 Dissolvable adhesive 15 Chuck device 16 Support member 91 Centering claw 92 Centering nails

Claims (3)

A method for attaching a workpiece to which a lens material that is a workpiece is attached to an attaching plate,
Hold the upper surface of the lens material with a holding and transport mechanism and apply a heat-soluble adhesive to the lower surface of the lens material with an application bar.
Heating the sticking pan to a temperature above the melting temperature of the hot-melt sticking agent;
After gripping the outer periphery of the lens material to which the heat-soluble adhesive agent has been applied with a chuck device and restraining it, the application rod is removed, and then the lens material is transported onto the attachment plate to place the lens material on the attachment plate. Crimp,
The outer periphery of the pressure-bonded lens material and the pasting dish is held together by a pair of centering claws to center the lens material and the pasting dish,
Cooling and curing the lens material and the attaching plate while maintaining the state of pressure bonding and centering between the lens material and the attaching plate,
A method of attaching a workpiece characterized by the above. A workpiece pasting device for pasting a lens material, which is a workpiece, to a pasting plate placed on a mounting table,
An application mechanism having an application rod for applying a heat-soluble adhesive to the lens material application surface;
An openable and closable chuck device that holds the outer periphery of the lens material coated with a heat-soluble adhesive and restrains the lens material when the coating rod is detached;
Heating means for heating the sticking dish to a temperature above the melting temperature of the hot-melt sticking agent;
Adsorption holding of the lens material, conveyance of the lens material from the application mechanism unit to the upper side of the affixing plate, holding conveyance mechanism unit for performing pressure bonding to the affixing plate of the lens material
A centering mechanism for centering by pinching the lens material and the pasting plate that are crimped to each other with a pair of centering claws;
While maintaining the centering state by the centering mechanism unit, a cooling mechanism unit that cools the lens material, a cooling medium by spraying a cooling medium to cool the heat-soluble adhesive agent, and
An apparatus for attaching a workpiece, characterized by comprising: The chuck device operates in conjunction with a holding and conveying mechanism, and grips the lens material not only when the coating rod is detached but also when the lens material is conveyed to an attachment plate. 2. A workpiece pasting apparatus according to 2.

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