CN113246510A

CN113246510A - Lens and mold transfer system

Info

Publication number: CN113246510A
Application number: CN202110144363.2A
Authority: CN
Inventors: 郑荣和; 李衍衡; 郑东衍
Original assignee: Pickaxe Technology Co Ltd
Current assignee: Pickaxe Technology Co Ltd
Priority date: 2020-02-07
Filing date: 2021-02-02
Publication date: 2021-08-13
Also published as: KR102232897B1; KR102232897B9

Abstract

Disclosed is a lens and mold transfer system comprising: a mold feeding section for feeding a mold discharged from the lens molding machine to a first position; a mold transfer unit for transferring the mold located at the first position to a second position along a first direction; a mold feeding unit configured to feed the mold located at the second position to the lens molding machine; an upper core picking portion which is disposed to overlap a transfer path of the mold between a first position and a second position, and picks up an upper core of the mold in a process of transferring the mold from the first position to the second position by the mold transfer portion, the upper core picking portion including: a driving unit which is arranged along the vertical direction and can change the length; a moving member which is linked with the driving unit and moves in the vertical direction by the driving of the driving unit; an adsorption unit arranged at the lower part of the moving component and used for adsorbing the upper mold core; and a balance weight, when the adsorption unit is contacted with the upper mold core, the moving part is pulled towards the upper side, and the load applied to the upper mold core is reduced.

Description

Lens and mold transfer system

Technical Field

The present invention relates to a system for transferring a lens and a mold by connecting to a lens molding machine that molds a lens material that is fed in into a three-dimensional shape and then feeds out the lens material.

Background

In recent years, as digital cameras, camera phones, network cameras, and the like have become smaller and thinner, the size of camera modules has become smaller. With the miniaturization of camera modules, the demand for aspherical lenses has increased dramatically in place of the existing spherical lenses.

Such an aspherical lens can be produced by a grinding method or a press molding method, but the grinding method is not suitable for mass production. Therefore, in recent years, a press molding method has been used in many cases in which a lens material is put into an upper core and a lower core, the upper core and the lower core are assembled with each other, and then put into a lens molding machine, and the lens is molded through a high-temperature heating step, a pressing step, and a cooling step.

The lens molding machine is connected to a lens and mold transfer system for continuously performing the above-described steps. The lens and mold transfer system is configured to take out a mold from a lens molding machine, load a molded lens after molding, and, after a lens material for molding is put into the mold, put the mold into the lens molding machine again.

The lens forming machine, and the lens and mold transfer system connected thereto constitute a lens forming system for producing an aspherical lens. Therefore, the cycle time of the lens and mold transfer system affects the cycle time of the lens molding system. Therefore, a system for rapidly transferring a lens and a mold in a more efficient transfer route is required to be studied.

The lens and mold transfer system is configured to separate a mold taken out of a lens molding machine and take out a molded lens, and then to charge a lens material into the separated mold. Therefore, it is considered that shortening of the time required for taking out the molded lens and charging the lens material is one element that can shorten the cycle time of the lens molding system.

On the other hand, when the mold is separated in order to take out the molded lens, although the lens is usually set on the lower core, the lens may be attached to the upper core depending on the case. Therefore, it is necessary to study a technique for preventing the molded lens from adhering to the upper core and enabling the molded lens to be taken out even if the molded lens adheres to the upper core.

Meanwhile, in a mold having a plurality of cavities for molding a plurality of lenses at one time, it is necessary to complete separation of an upper core, removal of a molded lens, input of a lens material, and reassembly of the upper core at an accurate position of each cavity. However, since there is an assembly tolerance of the upper and lower cores in each cavity and a plurality of cavities are provided in one mold, if an accurate position cannot be aligned, there is a high possibility that a molding failure occurs.

In addition, when the mold is separated in order to take out the molded lens, if a large load is applied to the mold, there is a risk that the molded lens located between the upper core and the lower core is broken. Accordingly, it is necessary to study a technique for not applying a large load to the mold when performing the separation.

On the other hand, the mold fed out from the specific lens molding machine may be rotated by a certain angle (for example, 180 degrees) with respect to the time when the mold is fed into the lens molding machine. In this case, the lens and mold transfer system must be loaded into the lens molding machine after rotating the mold by a predetermined angle to return the mold to the original position, which is the same state as when the mold is loaded into the lens molding machine. Therefore, it is necessary to study a technique of rotating the mold at an appropriate timing during the transfer of the mold.

In addition, the mold may be transferred by a pick-up method or may be transferred by a slide method. In the case of the slide transfer method, there is a problem that it is difficult to connect a member for slide transfer of a mold in a horizontal direction in a step-less manner, and if the mold is set to be inclined downward for slide transfer, there is a problem that a difference in height occurs with a portion where the mold is finally fed into a lens molding machine. Therefore, when the mold is transferred in a sliding manner, it is necessary to study a technique capable of solving the above-described problems.

Disclosure of Invention

A first object of the present invention is to provide a technique capable of shortening the time required for taking out a molded lens and charging a lens material.

A second object of the present invention is to provide a technique for preventing a molded lens from adhering to an upper core and for taking out the molded lens even if the molded lens adheres to the upper core.

A third object of the present invention is to provide a technique for realizing separation of an upper core, removal of a molded lens, input of a lens material, and reassembly of the upper core at an accurate position of each cavity in a mold having a plurality of cavities for molding a plurality of lenses at one time.

A fourth object of the present invention is to provide a technique that can prevent a large load from being applied to a mold when the mold is separated to take out a molded lens.

A fifth object of the present invention is to provide a technique for rotating a mold 180 degrees at an appropriate timing during the transfer of the mold in consideration of the fact that the mold fed out from a lens molding machine is rotated 180 degrees.

A sixth object of the present invention is to provide a technique of connecting members, to which a mold is slidably transferred in a horizontal direction, together in such a manner as to minimize steps, and finally compensating for a difference in height with a portion where the mold is fed into a lens molding machine, in the case of transferring the mold in a sliding manner.

To achieve the first object of the present invention, the present invention discloses a lens and mold transfer system, comprising: a mold feeding section that feeds a mold discharged from a lens molding machine to a first position; a mold transfer unit for transferring the mold located at the first position to a second position along a first direction; a mold feeding unit for feeding the mold located at the second position to the lens molding machine; an upper core pickup unit disposed to overlap a transfer path of the mold between the first position and the second position, and configured to pick up an upper core of the mold while the mold is transferred from the first position to the second position by the mold transfer unit; a molded lens transfer unit configured to pick up and transfer a molded lens exposed to the outside by the picking up of the upper core; and a lens material transfer unit which moves together with the molded lens transfer unit in a second direction perpendicular to the first direction, and is formed to place a lens material on a lower core of the mold after the molded lens is picked up by the molded lens transfer unit.

The lens material transfer unit is configured to pick up the lens material before moving in the second direction together with the molded lens transfer unit.

The molded lens transfer unit may include: a first molded lens transfer module formed to suck the molded lens attached to the upper core; and a second molded lens transfer module formed to suck the molded lens placed on the lower core.

The first suction unit for sucking the molded lens may be disposed to face upward in the first molded lens transfer module, and the second suction unit for sucking the molded lens may be disposed to face downward in the second molded lens transfer module.

The lens and mold transfer system may further include: a molded lens temporary loading section configured to temporarily load the molded lens sucked by the second suction means and to be movable in the vertical direction; and a molded lens loading unit configured to load the molded lens adsorbed by the first adsorbing unit or the molded lens loaded on the molded lens temporary loading unit on a molded lens tray.

The lens and mold transfer system may further include: a lens material temporary loading unit for temporarily loading the lens material before the lens material is picked up by the lens material transfer unit; and a lens material pickup unit configured to transfer the lens material loaded on the lens material tray to the lens material temporary loading unit, wherein the lens material temporary loading unit may be configured to be movable between a position overlapping the lens material pickup unit and a position overlapping the lens material transfer unit.

In order to achieve the second object of the present invention, the present invention discloses a lens and mold transfer system, comprising: a mold feeding section that feeds a mold discharged from a lens molding machine to a first position; a mold transfer unit for transferring the mold located at the first position to a second position along a first direction; a mold feeding unit for feeding the mold located at the second position to the lens molding machine; and an upper core pickup portion disposed at a third position between the first position and the second position, the upper core pickup portion being configured to pick up an upper core of the mold in order to take out a molded lens in a process of transferring the mold from the first position to the second position by the mold transfer portion, the mold transfer portion including a vibration module disposed between the first position and the third position, the vibration module being configured to apply vibration to the mold before the upper core is picked up by the upper core pickup portion.

The mold transfer unit further includes a plurality of switching stages arranged in the first direction between the first position and the second position, and formed to place and slidably transfer the mold; the vibration module is disposed on one of the plurality of switching stages between the first position and the third position.

The vibration module is configured to apply vibration to one of the conversion tables when the mold is transferred to the one of the conversion tables.

The lens and mold transfer system may further include a mold transfer unit configured to slide and transfer the mold on the plurality of conversion stages by clamping the mold, and the mold transfer unit may be configured to release the mold after transferring the mold to one of the conversion stages.

Two converting tables disposed on both sides of one of the converting tables are disposed at a predetermined interval from the one converting table.

The horizontal disposition surfaces of the two conversion stages and the horizontal disposition surface of one of the conversion stages may be arranged so that the height thereof gradually decreases along the first direction.

To achieve the third object of the present invention, the present invention discloses a lens and mold transfer system, comprising: a mold feeding section that feeds a mold discharged from a lens molding machine to a first position; a mold transfer unit for transferring the mold located at the first position to a second position along a first direction; a mold feeding unit for feeding the mold located at the second position to the lens molding machine; a mold centering unit that fixes a mold main body of the mold at a third position between the first position and the second position, and performs centering by pressurizing an upper core and a lower core using a hole communicating with a cavity of the mold main body; and an upper core pickup section configured to pick up the upper core in order to take out the molded lens in a state where the upper core and the lower core are centered by the mold centering section.

The mold centering unit includes a first arm and a second arm which are disposed to face each other with the mold interposed therebetween and are formed to adjust a distance between the first arm and the second arm, and the first arm and the second arm each include: a clamping unit inserted into grooves formed on both side surfaces of the mold body; and a pressurizing unit inserted into holes formed at both sides of the groove to pressurize the upper core and the lower core.

The mold transfer unit includes a plurality of switching stages arranged in the first direction between the first position and the second position, and configured to place and slide and transfer the mold, and an adsorption module configured to adsorb the placed mold is provided on one of the switching stages corresponding to the third position.

A suction hole is formed in the transfer table corresponding to the third position, and the upper core picking section is formed so as to be movable in the vertical direction by being arranged so as to overlap the suction hole.

To achieve the fourth object of the present invention, the present invention discloses a lens and mold transfer system, comprising: a mold feeding section that feeds a mold discharged from a lens molding machine to a first position; a mold transfer unit for transferring the mold located at the first position to a second position along a first direction; a mold feeding unit for feeding the mold located at the second position to the lens molding machine; and an upper core pickup unit that is disposed so as to overlap a transfer path of the mold between the first position and the second position, and is configured to pick up an upper core of the mold in a process of transferring the mold from the first position to the second position by the mold transfer unit, the upper core pickup unit including: a driving unit which is arranged along the vertical direction and is formed in a manner that the length can be changed; a moving member which is linked with the driving unit so as to move along the vertical direction by the driving of the driving unit; an adsorption unit provided below the moving member and configured to adsorb the upper core; and a balance weight formed to reduce a load applied to the upper mold core by pulling the moving member upward when the suction unit comes into contact with the upper mold core.

The moving member and the balance weight are configured to be suspended by being connected to a wire wound around at least one fixed sheave.

The upper core pick-up part may further include: a fixed box on which a first and a second fixed pulley are mounted; and a guide rail which is disposed on the fixed box so as to be long in the vertical direction and guides the movement of the moving member by being coupled to the moving member.

The adsorption unit may include: a main body having a hollow portion and formed of a rigid material; and a suction pad made of a flexible material, which is disposed in the hollow portion and is brought into contact with the upper core by suction.

An end portion of the suction pad may be disposed to protrude from an end portion of the main body.

To achieve the fifth object of the present invention, the present invention discloses a lens and mold transfer system, comprising: a mold feeding section that feeds a mold discharged from a lens molding machine to a first position; a mold transfer unit for transferring the mold located at the first position to a second position along a first direction; a mold feeding unit for feeding the mold located at the second position to the lens molding machine; and an upper core pickup portion that is disposed so as to overlap a transfer path of the mold at a third position between the first position and the second position, and that is formed so as to pick up an upper core of the mold in a process of transferring the mold from the first position to the second position by the mold transfer portion, the mold transfer portion including: a first rotating unit configured to rotate the mold ejected from the lens molding machine by a first angle before the mold is transferred to the upper core picking unit; and a second rotating unit configured to rotate the mold having passed through the upper core picking unit by a second angle before the mold is transferred to the mold delivering unit.

The first and second rotating units are disposed on both sides of the upper core pickup unit.

The mold transfer unit may further include a plurality of switching stages arranged in the first direction between the first position and the second position to set and slidably transfer the mold, and the first rotating unit may be rotatably provided on one of the plurality of switching stages between the first position and the third position to rotate the set mold by the first angle.

The first rotating unit includes: a rotary plate rotatably provided on one of the conversion tables; and a driving module formed to rotate the rotating plate, wherein a mounting surface of the rotating plate forms the same plane as a horizontal mounting surface of one of the converting tables.

The mold transfer part may further include a mold pickup unit that is disposed on the disposition surface of the rotation plate by picking up the mold delivered to the first position by the mold delivery part.

The mold picking unit may include a mold lower support hook for supporting a lower portion of the mold, and the rotary plate may have a groove into which the mold lower support hook is inserted.

The mold transfer unit may further include a height correction unit disposed between the delivery table on the mold delivery unit side and the conversion table on the rear end, the height correction unit being configured to be movable in a vertical direction so as to compensate for a height difference between the horizontal placement surface of the conversion table on the rear end and the placement surface of the delivery table, and the second rotation unit may be configured to clamp both sides of the mold placed on the height correction unit and rotate the mold by the second angle.

The height correcting portion is configured to be raised so as to be aligned with a setting surface of the delivery table located at the second position before the mold is clamped by the second rotating unit in a set state.

The second rotating unit may be configured to rotate the mold by the second angle by the second rotating unit, and then slide and transfer the mold from the height correcting unit to the delivery table.

When the mold is transferred to the delivery table by the second rotating unit, the height correcting unit is lowered to be lower than the horizontal disposition surface of the rear end conversion table.

To achieve the sixth object of the present invention, the present invention discloses a lens and mold transfer system, comprising: a mold feeding section that feeds a mold discharged from a lens molding machine to a first position; a mold transfer unit for transferring the mold located at the first position to a second position along a first direction; and a mold delivery unit that delivers the mold located at the second position to the lens molding machine, the mold delivery unit including: a plurality of transfer tables arranged in the first direction between the first position and the second position, the plurality of transfer tables being configured to place and slide the mold, and the transfer tables being arranged such that a height of a horizontal placement surface is lower at a rear end than at a front end; and a height correction unit disposed between the mold feeding unit side feeding table and the rear end transfer table, the height correction unit being movable in a vertical direction to compensate for a height difference between a horizontal installation surface of the rear end transfer table and an installation surface of the feeding table.

The height correcting portion is formed to be raised to align with a height of a seating surface of the carry-out table located at the second position when the mold is seated.

When the mold is slidingly transferred to the delivery table, the height correcting portion is lowered so as to be positioned lower than the horizontal placement surface of the rear end transfer table.

The effects of the present invention obtained by the above-described solution are as follows:

first, since the lens material transfer unit is formed so as to be moved to the third position together with the molded lens transfer unit in a state where the lens material is picked up, the lens material can be immediately introduced after the molded lens is taken out. Therefore, the cycle time of the lens and the mold transfer system can be shortened, and finally, the molding speed of the aspherical lens can be increased.

Secondly, since the upper core pickup unit is configured to apply vibration to the transfer table on which the mold is slid and transferred before the upper core is picked up, the molded lens attached to the upper core can be separated by the vibration. In addition, since the molded lens transfer unit includes the first molded lens transfer module that sucks the molded lens attached to the upper core and the second molded lens transfer module that sucks the molded lens mounted on the lower core, even if the molded lens is attached to the upper core, the molded lens can be taken out by the first molded lens transfer module.

Thirdly, since the mold centering part is formed in such a manner that the mold main body of the mold is fixed and the upper and lower cores are pressurized through the holes communicating with the cavities of the mold main body to perform centering before the upper core is separated, the separation of the upper core, the taking out of the molded lens, the input of the lens material, and the reassembly of the upper core can be realized at accurate positions of the cavities. Therefore, the problem of molding failure due to the failure to align the accurate positions can be solved.

Fourthly, since the moving member of the upper mold core picking part is pulled toward the upper side by the balance weight, when the adsorption unit of the upper mold core picking part is in contact with the upper mold core, the load applied to the upper mold core can be reduced. Therefore, when the mold is separated to take out the molded lens, the possibility of the molded lens being damaged can be reduced.

Fifth, the mold ejected from the lens molding machine is rotated by a first angle (for example, +90 degrees) by the first rotating unit before being transferred to the upper core picking unit, and the mold after passing through the upper core picking unit is rotated by a second angle (for example, +90 degrees) by the second rotating unit before being transferred to the mold ejecting unit, so that the mold can be transferred to the lens molding machine in a state of being restored to the original position (180 degrees +90 degrees + 360 degrees).

Sixth, a new mold slide transfer structure can be realized by arranging a height correcting unit between the horizontal placement surface of the conversion table arranged at the rear end and the placement surface of the mold feeding unit so as to be movable in the vertical direction to compensate for a height difference therebetween.

Drawings

Fig. 1 and 2 are perspective views of a lens and a mold transfer system according to an embodiment of the present invention, as viewed from different directions.

Fig. 3 is a plan view of the lens and mold transfer system of fig. 1.

Fig. 4 is an exploded perspective view showing an example of a mold used in the lens and mold transfer system shown in fig. 3.

Fig. 5 is a schematic view showing a cross section of the mold illustrated in fig. 4.

Fig. 6 is an exploded perspective view of the mold illustrated in fig. 4.

Fig. 7 is a perspective view of the mold feeding part illustrated in fig. 3.

Fig. 8 is a perspective view of the mold loading part illustrated in fig. 3.

Fig. 9 is a perspective view of the mold picking unit illustrated in fig. 3.

Fig. 10 is a perspective view showing a plurality of conversion stages illustrated in fig. 3.

Fig. 11 is a perspective view of the mold transfer unit illustrated in fig. 3.

Fig. 12 is a perspective view showing the mold centering portion shown in fig. 1.

Fig. 13 is a view for explaining a concept of centering the mold by the mold centering portion of fig. 12.

Fig. 14 and 15 are perspective views of the upper core pickup illustrated in fig. 2, viewed from different directions.

Fig. 16 is a perspective view illustrating the height correcting section illustrated in fig. 3.

Fig. 17 is a perspective view illustrating the second rotating unit illustrated in fig. 3.

Fig. 18 is a perspective view showing the mold feeding unit shown in fig. 3.

Fig. 19 is a perspective view showing the molded lens transfer unit and the lens material transfer unit shown in fig. 3.

Fig. 20 is a perspective view showing the lens material pickup unit shown in fig. 3.

Fig. 21 is a perspective view showing the lens material temporary mounting portion shown in fig. 3.

Fig. 22 is a perspective view showing the molded lens temporary mounting section shown in fig. 3.

Fig. 23 is a perspective view showing the molded lens mount illustrated in fig. 3.

Fig. 24 is a schematic view showing an overall process of the lens and mold transfer system shown in fig. 1.

Detailed Description

Next, the lens and mold transfer system will be described in more detail with reference to the drawings.

In describing the embodiments disclosed in the present specification, if it is considered that detailed description of related known techniques may obscure the meaning of the embodiments disclosed in the present specification, the detailed description thereof will be omitted.

The drawings are only for the purpose of assisting understanding of the embodiments disclosed in the present specification, and are not intended to limit the technical ideas disclosed in the present specification by the drawings, and should be understood to include all modifications, equivalents, and substitutes falling within the spirit and technical scope of the present invention.

In the following description, the singular expressions include the plural expressions unless the context clearly dictates otherwise. In the description that follows, singular expressions include plural expressions, unless the context clearly dictates otherwise.

In the present application, the terms "including" or "having" and the like are to be understood to indicate that there are the features, numerals, steps, actions, constituent elements, components, or combinations thereof described in the specification, and do not exclude the possibility of the presence or addition of one or more other features, numerals, steps, actions, constituent elements, components, or combinations thereof in advance.

Fig. 1 and 2 are perspective views of a lens and mold transfer system 100 according to an embodiment of the present invention, as viewed from different directions, and fig. 3 is a plan view of the lens and mold transfer system 100 of fig. 1.

As shown in fig. 1 to 3, the lens molding machine is a device for molding a spherical lens material (GOB) into an aspherical lens and discharging the aspherical lens. A lens material as a molding object is put into a lens molding machine in a state of being accommodated in the mold 10, and is discharged from the lens molding machine after passing through a molding process.

For example, if a spherical lens material is placed inside the mold 10 and the mold 10 is put into a lens molding machine, the mold 10 including a molded lens molded into an aspherical lens through a high-temperature heating step, a molding step, and a cooling step is discharged from the lens molding machine.

A lens and mold transfer system 100 is connected to the lens molding machine to continuously perform the above-described processes.

That is, the lens and mold transfer system 100 is configured to take out the mold 10 from the lens molding machine, load the molded lens, and, after the lens material for molding is put into the mold 10, put the mold 10 into the lens molding machine again.

The lens and mold transfer system 100 is configured to transfer the mold 10 discharged from the lens molding machine along a predetermined path and then to transfer the mold to the lens molding machine again. To this end, the lens and mold transfer system 100 includes a mold feeding portion 111, a mold transfer portion 120, and a mold feeding portion 112.

The lens and mold transfer system 100 is configured to separate the mold 10 while transferring the mold 10 along a predetermined path. To this end, the lens and mold transfer system 100 includes a mold centering part 130 and an upper core picking part 140.

At the same time, the lens and mold transfer system 100 is configured to take out and load a molded lens having an aspherical shape exposed to the outside by separating the mold 10, and to charge a spherical lens material into the mold 10. To this end, the lens and mold transfer system 100 includes a lens raw material pickup portion 160, a lens raw material temporary loading portion 170, a lens raw material transfer portion 153, molded

lens transfer portions

151 and 152, a molded lens temporary loading portion 190, and a molded lens loading portion 180.

The lens and mold transfer system 100 includes a control unit (not shown) electrically connected to the above-described structure to control driving. The control unit is configured to be electrically connectable to or communicable with a control unit of the lens molding machine.

Fig. 4 is an exploded perspective view showing an example of the mold 10 used in the lens and mold transfer system 100 shown in fig. 3, fig. 5 is a schematic view showing a cross section of the mold 10 shown in fig. 4, and fig. 6 is an exploded perspective view of the mold 10 shown in fig. 4.

As shown in fig. 4 to 6, the mold 10 used in the lens and mold transfer system 100 shown in fig. 3 includes a mold main body 11, a base 12, a lower core 14, an inner sleeve 13, and an upper core 15.

In the mold 10, a plurality of cavities 11a are formed for molding a plurality of lenses at one time, and a lower core 14, an inner sleeve 13, and an upper core 15 are provided so as to correspond to the plurality of cavities 11a, respectively. In the present embodiment, a mold 10 is shown in which four cavities 11a are formed.

It should be noted that the present invention is not limited thereto. The number of cavities 11a formed in the mold 10 may be changed, or a single cavity 11a other than the plurality of cavities 11a may be formed in the mold 10.

The mold body 11 is formed in a hexahedral shape and includes a cavity 11a formed to penetrate vertically. In this figure, a cavity 11a is provided between the central axis and each edge line of the mold body 11. Each chamber 11a has a shape extending parallel to the central axis. With the above arrangement, the two chambers 11a adjacent to each other are arranged so as to be adjacent to one side surface of the mold main body 11.

Holes 11c communicating with the respective cavities 11a are formed in both side surfaces of the mold body 11. That is, two holes 11c communicating with the two chambers 11a arranged adjacent to the one side surface are formed in one side surface of the mold body 11, and two holes 11c communicating with the two chambers 11a arranged adjacent to the other side surface are formed in the other side surface opposite to the one side surface. The two holes 11c formed in the one side surface and the two holes 11c formed in the other side surface may be arranged to face each other with the inner surface of the mold body 11 interposed therebetween.

On each side surface of the mold main body 11, a groove 11b for clamping is formed. The groove 11b may be formed in a circular shape.

Grooves 11b for clamping are formed in both side surfaces of the mold body 11 in which the holes 11c are formed. The above-mentioned groove 11b may be formed between the two holes 11 c.

Grooves 11b for clamping are also formed on the other two side surfaces of the mold body 11 where the above-described hole 11c is not formed.

The base 12 is formed in such a manner as to be able to seat the mold body 11. The base 12 includes protruding portions 12a housed in the cavities 11a, respectively. Since the protrusion 12a is accommodated in the cavity 11a, the mold main body 11 can be seated at a fixed position of the base 12.

The lower cores 14 are seated on the base 12 by being received in the cavities 11a, respectively. The upper portion of the lower core 14 is formed in a shape corresponding to the image of the lower side of the aspherical lens.

The inner sleeve 13 includes a hollow portion 13a, and is formed to surround the lower core 14 by being inserted into each cavity 11 a. A part of the inner sleeve 13 is exposed in the lateral direction of the mold body 11 through a hole 11c formed in the mold body 11.

The upper core 15 is inserted into each cavity 11a in such a manner as to cover the lower core 14. At least a portion of the upper mold core 15 is received within the inner sleeve 13. The lower portion of the upper core 15 is formed in a shape corresponding to the image of the upper side of the aspherical lens.

In the mold 10 charged into the lens molding machine, a spherical lens material to be molded is arranged between the lower core 14 and the upper core 15, and in the mold 10 discharged from the lens molding machine, a molded aspherical lens is arranged between the lower core 14 and the upper core 15. Since the vertical length (thickness) of the spherical lens material is longer than that of the molded aspherical lens, the upper core 15 is disposed so as to protrude from the mold body 11 in the mold 10 that is put into the lens molding machine.

Next, the lens and mold transfer system 100 and the lens and mold transfer process, which can further simplify the conventional lens and mold transfer process, will be specifically described.

For reference, the structures illustrated in fig. 7 to 23, which will be described later, show the structures constituting the lens and mold transfer system 100 illustrated in fig. 1 to 3 one by one, and fig. 24 is a schematic view showing the overall process of the lens and mold transfer system illustrated in fig. 1.

Therefore, if the arrangement and the movement principle of each structure illustrated in fig. 7 to 23 are understood with reference to fig. 24, the lens and mold transfer system 100 of the present invention can be easily understood.

Fig. 7 is a perspective view of the mold feeding part 111 illustrated in fig. 3.

As shown in fig. 7, the mold feeding section 111 is configured to feed the mold 10 discharged from the lens molding machine to the first position a by being connected to a mold discharge port of the lens molding machine. In the present drawing, a case is shown in which the die feed portion 111 is extended from the die discharge port toward the first position a along the-Y axis direction in the drawing.

Preferably, the mold feeding unit 111 transfers the mold 10 in the horizontal direction so that the height in the Z-axis direction in the drawing does not change.

The mold feeding section 111 may be implemented in various manners such as a pushing manner, a conveyor manner, and the like.

In the present drawing, a case where the mold feeding portion 111 is formed by a conveyor method is shown. Specifically, the mold feeding unit 111 includes a first roller 111a, a second roller 111b, a table 111c, and a conveyor belt 111 d.

The first roller 111a and the second roller 111b are disposed so as to be separated from each other, and have parallel rotation axes. The first and

second rollers

111a and 111b are configured to rotate in the same direction (clockwise in the drawing), thereby moving the upper portion of the conveyor belt 111d in the-Y axis direction in the drawing.

A table 111c is disposed between the first roller 111a and the second roller 111 b.

The conveyor belt 111d is wound in a loop around the first roller 111a and the second roller 111 b. The table 111c is disposed below the upper portion of the conveyor 111d, and thus the mold 10 placed on the upper portion of the conveyor 111d is configured to move while being supported by the table 111 c.

The mold feeding part 111 may be provided with a stopper 111e to catch the mold 10 when the mold 10 is transferred to the first position a. When the mold 10 reaches the first position a, the mold 10 is not further moved by the stopper 111e even if the conveyor belt 111d rotates.

Fig. 8 is a perspective view of the mold loading part 113 illustrated in fig. 3.

As shown in fig. 8, the mold loading unit 113 is configured to load a mold that is loaded at the initial stage of driving the lens and mold transfer system 100 or a defective mold 10 that is generated during driving.

The mold loading unit 113 includes a seating groove 113a corresponding to the lower outer shape of the mold 10, and a sensor 113b for detecting whether the mold 10 is seated or not may be provided at the bottom of the seating groove 113 a. The seating grooves 113a are arranged in a matrix shape. In the present drawing, there is shown a case where the seating grooves 113a are arranged in a matrix shape along the X-axis direction and the Y-axis direction in the drawing.

In the initial stage of driving the lens and mold transfer system 100, the operation of transferring the mold 10 loaded on the mold loading portion 113 to a predetermined position or loading the defective mold 10 generated during driving on the mold loading portion 113 is performed by a mold pickup unit 121 (see fig. 9) described later. As shown in fig. 9, the mold picking unit 121 is configured to be movable only in the X-axis direction and the Z-axis direction in the drawing.

The seating grooves 113a corresponding to the mold loading portions 113 are arranged in a matrix shape along the X-axis direction and the Y-axis direction in the drawing, and the mold loading portions 113 are configured to be movable along the Y-axis direction in the drawing. That is, the mold 10 can be set in one of the set grooves 113a by the movement of the mold loading part 113 and the mold pickup unit 121.

In the present drawing, the mold loading unit 113 is configured to be movable by the guide rail 113c and the moving member 113d in order to realize the above movement. The guide rail 113c extends along the Y-axis direction in the drawing, and the moving member 113d is provided on the guide rail 113c so as to be slidable along the guide rail 113 c. A mold mounting plate 113e having a mounting groove 113a is mounted on the moving member 113 d.

A hole 113f or a groove into which the mold lower supporting hook 121g of the mold pickup unit 121 can be inserted when the mold pickup unit 121 descends in the-Z axis direction and picks up or loads the mold 10 is formed in the mold loading plate 113 e. The holes 113f or grooves are formed at both sides of the seating groove 113a in a communicating manner.

Fig. 9 is a perspective view of the mold picking unit 121 illustrated in fig. 3.

As shown in fig. 9, the mold pickup unit 121 is disposed on the mold feeding portion 111 side, and is configured so as to pick up the mold 10 fed to the first position a by the mold feeding portion 111. In order to transfer the picked-up mold 10, the mold pickup unit 121 may be disposed at a predetermined position (e.g., the first rotating unit 125) of the transfer table 122.

If a mold defect is detected in the driving of the lens molding system, the control part may control in such a manner that the mold pickup unit 121 picks up the mold 10 in which the defect is generated and is seated in the seating groove 113a of the mold loading part 113.

For reference, at the initial stage of driving the lens and mold transfer system 100, the mold pickup unit 121 may be configured to transfer the mold 10 loaded on the mold loading portion 113 to a predetermined position (e.g., the first rotation unit 125) of the transfer table 122.

In the present drawing, there is shown a mold pickup unit 121 configured to be movable in the X-axis direction and the Z-axis direction in the drawing.

The mold picking unit 121 includes a first guide rail 121a, a first moving member 121b, a second guide rail 121c, a second moving member 121d, and a picking unit 121 e.

The first guide rail 121a is extended along the X-axis direction in the drawing, and the first moving member 121b is provided on the first guide rail 121a so as to be slidably movable along the first guide rail 121 a.

The second guide rail 121c is mounted on the first moving member 121b, and is extended along the Z-axis direction in the drawing. The second moving member 121d is provided on the second guide rail 121c so as to be slidable along the second guide rail 121 c.

The pickup unit 121e is provided on the second moving member 121d, and is configured to pick up the mold 10. The pickup unit 121e can pick up the mold 10 by various methods such as an adsorption method, a clamping method, and the like. In the present drawing, a pickup unit 121e using a clamping manner is shown.

Specifically, the pickup unit 121e includes two clamp arms 121f, the two clamp arms 121f being formed to be opposed to each other so that a distance therebetween can be adjusted, and each of the clamp arms 121f is provided with a mold lower support hook 121g that supports a lower portion of the mold 10.

When clamping the mold 10, the two clamp arms 121f clamp the mold 10 from both sides, and the mold lower support hooks 121g support the lower portion of the mold 10. When the mold 10 is released, the two clamp arms 121f are separated from both sides of the mold 10, and the mold lower support hooks 121g are separated in the lateral direction from the lower portion of the mold 10.

Fig. 10 is a perspective view showing the plurality of conversion tables 122 illustrated in fig. 3, and fig. 11 is a perspective view of the mold transfer unit 123 illustrated in fig. 3.

As shown in fig. 10, the plurality of switching stages 122 are formed to position and slide the take-off mold 10 by being arranged along the X-axis direction in the drawing between the first position a and the second position B. Each of the plurality of conversion stages 122 has a horizontal placement surface 122'.

Preferably, in order to transfer the mold 10 from one of the conversion stages 122 to another conversion stage 122 adjacent thereto in the + X direction in the drawing in a sliding manner without hindrance, the horizontal disposition surface 122 'of the other conversion stage 122 is disposed at the same height as or at a slightly lower height than the horizontal disposition surface 122' of the one of the conversion stages 122. For example, the plurality of conversion stages 122 may be configured such that the height of the horizontal seating surface 122' becomes gradually slightly lower along the + X-axis direction in the drawing.

At the same time, inclined portions 122 ″ inclined downward may be formed on the side surfaces of the two conversion stages 122 disposed to face each other. When the lens molding system is operated for a long time, the heights of the plurality of conversion stages 122 may be slightly shifted due to an external factor, and the horizontal disposition surface 122 'of the other conversion stage 122 may be slightly higher than the horizontal disposition surface 122' of one conversion stage 122. At this time, the inclined portion 122 "of the other transfer table 122 guides the transfer of the mold 10, thereby preventing the impact that may be applied to the mold 10, the molded lens, or the lens material when the inclined portion 122" is not provided.

As shown in fig. 11, the mold transfer unit 123 is configured to slide and transfer the mold 10 on the plurality of switching tables 122 in the + X axis direction in the drawing.

In the present drawing, the mold transfer unit 123 is configured to be movable in the X-axis direction and the Y-axis direction in the drawing. Specifically, the mold transfer unit 123 includes a first guide rail 123a, a first moving member 123b, a second guide rail 123c, a second moving member 123d, and a clamping unit 123 e.

The first guide rail 123a extends along the X-axis direction in the drawing, and the first moving member 123b is provided on the first guide rail 123a so as to be slidable along the first guide rail 123 a.

The second guide rail 123c is mounted on the first moving member 123b, and is extended along the Y-axis direction in the drawing. The second moving member 123d is provided on the second guide rail 123c so as to be slidably movable along the second guide rail 123 c.

The clamping unit 123e is provided on the second moving member 123d and configured to clamp the mold 10. The clamp unit 123e includes two clamp arms 123f, and the two clamp arms 123f are arranged to face each other, so that the distance between them can be adjusted. Each clamp arm 123f may be provided with a roller 123g formed to be insertable into the grooves 11b formed on both sides of the mold 10.

When clamping the mold 10, the second moving member 123d moves in the-Y axis direction in the drawing, and the two clamp arms 123f are configured to clamp the mold 10 from both sides by moving so as to approach each other across the mold 10. At this time, the roller 123g is provided so as to be able to clamp the mold 10 at an accurate position by being inserted into the groove 11 b. For example, even if the mold 10 is clamped at a slightly deviated position, the clamp arm 123f can be caused to clamp the mold 10 at an accurate position by moving the roller 123g along the circular groove 11b of the mold 10.

When the mold 10 is released, the two clamp arms 123f are separated from both sides of the mold 10, and the second moving member 123d is configured to be disengaged from the transfer path of the mold 10 by moving in the + Y axis direction.

As shown in fig. 10, in the process of slidably moving the mold 10 on the plurality of conversion tables 122 by the mold transfer unit 123, the vibration module 122f applies vibration to the mold 10.

The vibration module 122f is provided on one conversion stage 122b of the plurality of conversion stages 122. In this drawing, a vibration module 122f is provided below one of the conversion stages 122b to vibrate the horizontal disposition surface 122' of the one of the conversion stages 122 b. The vibration module 122f may be formed to apply vibration to the central portion 122g of one of the conversion stages 122 b.

When the mold 10 is transferred to one of the transfer tables 122b, the horizontal seating surface 122' is vibrated by driving the vibration module 122 f. Thus, the vibration is transmitted to the mold 10 placed on the horizontal placement surface 122', and the molded lens can be separated from the lower core 14 and the upper core 15 by the vibration.

In this case, the mold transfer unit 123 may be configured to position the mold 10 at the center portion 122g of one of the conversion tables, and may be configured to release the mold 10 by moving the two clamp arms 123f away from both sides of the mold 10 after the mold 10 is positioned at the position. This is to prevent vibration from not being transmitted to the mold transfer unit 123.

Preferably, the two

conversion stages

122a and 122c are disposed to be spaced apart from one of the conversion stages 122b by a predetermined distance so that when vibration is applied to the one of the conversion stages 122b, the vibration is not transmitted to the two

conversion stages

122a and 122c disposed on both sides of the one of the conversion stages 122 b. In the above configuration, the horizontal disposition surfaces 122' of the two

conversion stages

122a and 122c and one of the conversion stages 122b may be arranged such that the height thereof is gradually reduced along the + X-axis direction in the drawing, so that the mold 10 can be slidably transferred in a state of being disposed on the conversion stage 122.

When the driving of the vibration module 122f is stopped, it is configured in such a manner that the two clamp arms 123f move and clamp the mold 10 in such a manner as to approach the mold 10, and the first moving member 123b is moved in the + X axis direction in the drawing.

Thereafter, the mold 10 is moved to a third position C between the first position a and the second position B, and is subjected to a separation process for taking out the upper core 15 of the molded lens. In the case of separating the upper core 15 in order to take out the molded lens from the mold 10, the molded lens is usually placed on the lower core 14, but the molded lens may be attached to the upper core 15 depending on the case.

However, if vibration is applied to the mold 10 by the vibration module 122f in the process of being moved from the first position a to the third position C as described above, the molded lens is separated from the upper mold core 15 and the lower mold core 14, thereby solving the above-described problem.

Next, a process of separating the upper core 15 will be described.

When the mold 10 is transferred to the transfer table 122d corresponding to the third position C among the plurality of transfer tables 122 by the mold transfer unit 123, the mold 10 is fixed by a suction module (not shown), then the upper core 15 and the lower core 14 are centered by the mold centering unit 130, and then the upper core 15 is moved and separated to the upper side by the upper core pickup unit 140.

Specifically, an adsorption hole 122h is formed on the conversion stage 122d corresponding to the third position C among the plurality of conversion stages 122, and an adsorption module is provided at a lower portion of the adsorption hole 122 h. The adsorption module is formed in such a manner that air around the adsorption holes 122h is sucked through the adsorption holes 122 h.

The adsorption hole 122h may be disposed at a central portion of the switching stage 122 corresponding to the third position C, and may be provided in plurality. In the present drawing, when the mold 10 is arranged at the center portion of the switching table 122 corresponding to the third position C, a plurality of suction holes 122h are formed to be overlapped with the cavity 11a of the mold 10 in the up-down direction.

When the mold transfer unit 123 positions the mold 10 at the center portion of the switching table 122 corresponding to the third position C, the mold 10 is sucked by driving the suction module. In a state where the mold 10 is fixed by suction, the two clamp arms 123f of the mold transfer unit 123 are separated from both sides of the mold 10, and the second moving member 123d is moved in the + Y axis direction in the drawing, so that the mold centering portion 130, which will be described later, is centered by clamping the mold 10.

Fig. 12 is a perspective view showing the mold centering portion 130 illustrated in fig. 1, and fig. 13 is a schematic view for explaining a concept of centering the mold 10 by the mold centering portion 130 of fig. 12.

In the case of using the mold 10 having the plurality of cavities 11a as in the present invention, if the tolerances of the inner sleeve 13, the upper core 15, and the lower core 14 assembled in each cavity 11a are not controlled, the process of separating the upper core 15, taking out the molded lens, inputting the lens material, and reassembling the upper core 15 cannot be accurately realized, and the probability of occurrence of defects increases.

Therefore, in order to control the tolerance, it is necessary to center the inner sleeve 13, the upper core 15, and the lower core 14, which are disposed inside the respective chambers 11 a.

As shown in fig. 12 and 13, the mold centering portion 130 is formed to fix the mold body 11 of the mold 10 at the third position C and to perform centering by pressing the upper core 15 and the lower core 14 by the hole 11C communicated to the inside of the mold body 11.

Specifically, the mold centering section 130 includes a guide rail 131, a moving member 132, a first arm 133, and a second arm 134.

The guide rail 131 extends in the Y-axis direction in the drawing, and the moving member 132 is provided on the guide rail 131 so as to be slidable along the guide rail 131.

The first and

second arms

133 and 134 are provided on the moving member 132, and configured to clamp and center the mold 10. The first and

second arms

133 and 134 are formed so as to be arranged to face each other, thereby adjusting the distance between them.

The first and

second arms

133 and 134 respectively include a clamping unit 135 for fixing the mold 10 and a pressing unit 136 for centering the upper core 15 and the lower core 14 of the mold 10.

When the mold 10 is fixed at the center portion of the switching table 122d corresponding to the third position C by the adsorption module, the moving member 132 moves in the + Y-axis direction in the drawing. By the movement, the first and

second arms

133 and 134 are disposed on both sides with the mold 10 interposed therebetween.

Thereafter, the first and

second arms

133 and 134 are moved so as to approach each other, thereby clamping the mold 10 from both sides and centering the upper core 15 and the lower core 14.

Specifically, the clamping unit 135 is formed in such a manner as to clamp the mold 10 at a precise position by being inserted into the grooves 11b formed on both side surfaces of the mold body 11 of the mold 10. The clamping unit 135 may be formed as a roller so as to be capable of rolling contact with the circular groove 11 b. At this time, even if the mold 10 is clamped at a slightly deviated position, the first and

second arms

133 and 134 can be clamped at accurate positions by moving the rollers along the circular grooves 11b of the mold 10.

Meanwhile, the pressurizing unit 136 is formed to center the upper core 15 and the lower core 14 by pressurizing by being inserted into the holes 11c formed at both sides of the groove 11 b. As described above with reference to fig. 4 to 6, the mold structure including the inner sleeve 13 is configured such that the pressurizing means 136 is inserted into the hole 11c to pressurize the inner sleeve 13. With the pressurization, the inner sleeve 13 and the upper and

lower cores

15 and 14 inserted into the inner sleeve 13 will come into contact with the inner side wall of the cavity 11 a.

Specifically, the inner sleeve 13 is in contact with the inner side wall of the chamber 11a opposed to the hole 11 c. The inner sleeve 13 is in line contact with the inner side wall, and the line-contacted portion is opposed to the hole 11 c. In this way, as the inner sleeve 13 is centered at a predetermined position, the upper and

lower cores

15 and 14 inserted into the inner sleeve 13 and the molded lens disposed between the upper and

lower cores

15 and 14 are centered.

The pressurizing units 136 are respectively provided at both sides of the clamping unit 135. The clamping unit 135 may be constituted by a pressurizing pin. In this case, the pressurizing pin is configured to elastically pressurize the inner sleeve 13, and thus the load applied to the inner sleeve 13 can be reduced.

The inner sleeve 13, the upper core 15, and the lower core 14 assembled in each cavity 11a are centered by the mold centering unit 130, so that a process of separating the upper core 15, taking out a molded lens, charging a lens material, and reassembling the upper core 15, which will be described later, can be accurately realized. Therefore, the problem of molding failure due to misalignment of the accurate position can be solved.

Fig. 14 and 15 are perspective views of the upper core pickup 140 illustrated in fig. 2, viewed from different directions.

Referring to fig. 14 and 15 together with fig. 3, the upper core picking-up portion 140 is disposed so as to overlap the transfer path of the mold 10 at a third position C between the first position a and the second position B. The upper core pickup unit 140 is configured to pick up the upper core 15 in order to take out the molded lens in a state where the upper core 15 and the lower core 14 are centered by the mold centering unit 130.

The upper core pickup unit 140 is configured to be lifted up in the + Z axis direction in the drawing by adsorbing the upper portion of the upper core 15. For this, the upper core pickup 140 includes a driving unit 141, a moving member 142, and an adsorption unit 143.

The driving unit 141 is disposed along the up and down direction, i.e., the Z-axis direction in the drawing, and is formed to be variable in length. For example, the driving unit 141 may be an electric cylinder.

The moving member 142 is connected to the driving unit 141 and is formed to be movable in the vertical direction, i.e., the Z-axis direction in the drawing, by the driving of the driving unit 141. In the drawing, the moving member 142 is disposed on one side of the driving unit 141, and is configured to be interlocked with a portion of the driving unit 141, the length of which is variable, by the connecting member 145.

Meanwhile, the upper core pickup 140 may further include a guide rail 146 to guide the up and down movement of the moving member 142.

The guide rail 146 is disposed to be long in the vertical direction, i.e., the Z-axis direction in the drawing. In this figure, the case where the guide rail 146 is provided on the stationary box 147 is shown.

The moving member 142 is provided on the guide rail 146 and is formed to slide along the guide rail 146.

The suction unit 143 is provided at a lower portion of the moving member 142, and is formed to suck the upper core 15. The suction units 143 are provided corresponding to the number of the upper cores 15, and are arranged to be overlapped on the upper cores 15 when the upper cores 15 are centered by the mold centering unit 130.

The suction unit 143 includes a main body 143a and a suction pad 143 b.

The body 143a has a pillar shape having a hollow portion and is formed of a rigid material.

The suction pad 143b is made of a flexible material, is disposed in a hollow portion of the main body 143b, and is brought into contact with an upper portion of the upper core 15 by suction.

If a large load is applied to the upper core 15 when the suction unit 143 is in contact with the upper core 15, there is a risk that the molded lens located between the upper core 15 and the lower core 14 is broken. Therefore, in order to reduce the load applied to the upper core 15 when the adsorption unit 143 is in contact with the upper core 15, the present invention employs the following technique.

First, when the suction unit 143 contacts the upper core 15, the weight of the moving member 142 may affect the load applied to the upper core 15. In consideration of this, a balance weight 144 formed by pulling the moving member 142 upward is connected to the moving member 142 via a wire 149.

Specifically, the wire 149 is connected to the moving member 142 and the balance weight 144, and the wire 149 is formed to be wound around at least one fixed

pulley

148a, 148b disposed on the moving member 142 and the balance weight 144. That is, the moving member 142 and the balance weight 144 are configured to be suspended by a wire 149. Therefore, the balance weight 144 is formed to apply a force toward the upper side to the moving member 142.

In this drawing, a case is shown in which a first fixed sheave 148a is disposed on the moving member 142, and a second fixed sheave 148b is disposed on the balance weight 144.

The first and second fixed

pulleys

148a and 148b may be provided on the fixed cassette 147. At this time, an accommodating portion 147a for accommodating at least a part of the balance weight 144 may be formed at the side of the fixing case 147 where the balance weight 144 is disposed.

Preferably, the weight of the balance weight 144 is greater than the weight of the moving member 142. For example, the weight of the balance weight 144 may be a weight obtained by adding the weight of the moving member 142 to the weight of the adsorption unit 143, or may be greater than the above weight.

By adjusting the weight of the balance weight 144, the weight applied to the upper core 15 when the suction unit 143 is in contact with the upper core 15 can be made almost 0. That is, the suction unit 143 can be configured to contact the upper core 15 without a load.

As described above, since the moving member 142 of the upper core pickup 140 is formed so that the balance weight 144 pulls the moving member toward the upper side, it is possible to reduce the load applied to the upper core 15 when the suction unit 143 of the upper core pickup 140 comes into contact with the upper core 15. Therefore, the possibility of breakage of the molded lens when the mold 10 is separated to take out the molded lens can be reduced.

At the same time, the end of the suction pad 143b is provided so as to protrude downward from the end of the main body 143 a. Therefore, when the suction cups 143b suck the upper portion of the upper core 15, even if the suction cups 143b of a flexible material contract and move upward, the upper core 15 can be prevented from contacting the end portion of the body 143a, or even if they contact, the load applied to the upper core 15 can be minimized.

Fig. 16 is a perspective view illustrating the height correcting unit 124 illustrated in fig. 3.

As described above, in order to slidably transfer the mold 10 from one of the conversion tables 122 to another conversion table 122 adjacent thereto along the + X direction in the drawing without hindrance, the horizontal disposition surface 122 'of the other conversion table 122 is preferably arranged at the same height as the horizontal disposition surface 122' of the one of the conversion tables 122 or at a height slightly lower than the same height. However, considering that it is practically difficult to arrange the plurality of conversion stages 122 at exactly the same height, the horizontal placement surface 122 'of the conversion stage 122e arranged at the rear end is arranged lower than the horizontal placement surface 122' of the conversion stage 122 arranged at the front end.

However, the height of the placement surface 1 on which the mold 10 to be fed out to the mold feeding-out portion 112 side of the lens molding machine is placed is higher than the horizontal placement surface 122' of the changeover table 122e disposed at the rear end. In view of this, a height correcting section 124 is disposed between the horizontal seating surface 122' of the transfer table 122e disposed at the rear end and the seating surface 1 of the mold feeding section 112, and the height correcting section 124 is movable in the up-down direction, i.e., the Z-axis direction in the drawing, so as to compensate for the difference between the two heights.

The height correcting portion 124 is configured to be raised after the mold 10 is set so as to be aligned in height with the setting surface 1 of the mold sending-out portion 112 located at the second position B.

Thereafter, when the mold 10 is slid and transferred to the mold feeding portion 112, the height correcting portion 124 is lowered to be disposed lower than the horizontal placement surface 122' of the rear end changing table 122. That is, the height is lowered so that the next mold 10 transferred to the horizontal placement surface 122' of the transfer table 122 at the rear end can be slidably transferred to the height correcting unit 124.

By adjusting the height of the height correcting unit 124, the mold 10 can be sequentially transferred onto the transfer table 122e disposed at the rear end, the upper surface of the height correcting unit 124, and the mounting surface 1 on the mold feeding unit 112 side by a sliding method.

Specifically, the mold 10 placed on the transfer table 122e disposed at the rear end is slidably transferred from the horizontal placement surface 122' of the transfer table 122e disposed at the rear end to the upper surface of the height correcting unit 124 by the mold transfer unit 123.

Thereafter, it is formed in such a manner that the height correcting portion 124 is aligned with the seating surface 1 located at the second position B by being raised to thereby align the height before the mold 10 seated on the upper surface is clamped by the second rotating unit 126. At this time, the upper surface of the height correcting portion 124 may form the same plane as the seating surface 1 or be disposed higher than the seating surface 1.

Subsequently, the mold 10 is rotated by a second angle (for example, +90 degrees) while being clamped by the second rotating unit 126 and placed on the upper surface of the height correcting portion 124, and then is slid and transferred to the placement surface 1 of the mold feeding portion 112.

Thereafter, the height correcting unit 124 is lowered so that the upper surface is flush with the horizontal placement surface 122 'of the switching table 122e disposed at the rear end, or is disposed lower than the horizontal placement surface 122'.

In the present drawing, the height correcting section 124 includes a support member 124a, a guide member 124b, a moving member 124c, and a seating member 124 d.

The support member 124a is vertically arranged.

The guide member 124b includes a guide rail attached to the support member 124a and extending in the Z-axis direction in the drawing.

The moving member 124c is coupled to the guide member 124b so as to be movable in the Z-axis direction along the guide rail. A driving module that provides a driving force to enable the moving member 124c to move relative to the guide member 124b is mounted or connected to the guide member 124b or the moving member 124 c.

The setting member 124d is coupled to the moving member 124b and is horizontally configured in such a manner as to set the mold 10. The upper surface of the seating part 124d corresponds to the upper surface of the height correcting part 124 described above.

Fig. 17 is a perspective view illustrating the second rotating unit 126 illustrated in fig. 3.

In some cases, the mold 10 that is fed out from a specific lens molding machine may be rotated by a fixed angle (for example, +180 degrees) with respect to the time of feeding into the lens molding machine. In this case, the lens and mold transfer system 100 needs to rotate the mold 10 by a predetermined angle (for example, +180 degrees or-180 degrees) and then to be put into the lens molding machine so as to return to the original position, which is the same state as when the mold 10 was put into the lens molding machine. In view of the above, the lens and mold transfer system 100 is configured to rotate the mold 10 by a preset angle to return to the original position in the process of transferring the mold 10 from the first position a to the second position B.

Referring to fig. 10 prior to fig. 17, the mold transfer unit 120 includes a first rotating unit 125 that rotates the mold 10 a first time by a first angle (e.g., +90 degrees), and a second rotating unit 126 that rotates the mold 10 a second time by a second angle (e.g., +90 degrees). In the present embodiment, a case is shown as an example where the mold 10 is formed so as to be rotated by +90 degrees twice in the process of being transferred from the first position a to the third position C, corresponding to a case where the mold is fed out from the lens molding machine in a state of being rotated by +180 degrees.

It should be noted that the angle of rotation of the mold 10 by the first and second

rotating units

125 and 126 may be different depending on the angle of rotation of the mold in the lens molding machine, the shape of the mold, and the like. As an example, in the case where the mold 10 is fed out from the lens molding machine in a state of being rotated by +90 degrees, the first rotating unit 125 may be formed in such a manner that the mold 10 is rotated by +180 degrees, and the second rotating unit 126 may be formed in such a manner that the mold 10 is rotated by +90 degrees. Alternatively, the first rotating unit 125 may be formed in such a manner that the mold 10 is rotated by +90 degrees, and the second rotating unit 126 may be formed in such a manner that the mold 10 is rotated by +180 degrees.

In the present embodiment, the first and second

rotating units

125 and 126 are disposed on both sides of the upper core picking section 140 located at the third position C, respectively. That is, the first rotating unit 125 is formed by rotating the mold 10 discharged from the lens molding machine by a first angle (in the present embodiment, by +90 degrees) before being transferred to the upper core picking unit 140, and the second rotating unit 126 is formed by rotating the mold 10 after passing through the upper core picking unit 140 by a second angle (in the present embodiment, by +90 degrees) before being transferred to the mold discharging unit 112. Therefore, the mold can be fed into the lens molding machine in a state of being restored to the original position (180 degrees +90 degrees-360 degrees).

Next, the first rotating unit 125 and the second rotating unit 126 of the present embodiment will be described in order.

First, as shown in fig. 10, the first rotating unit 125 is rotatably provided on one of the plurality of converting tables 122 between the first position a and the third position C, and is formed in such a manner as to rotate the set mold 10 by a first angle (in the present embodiment, by +90 degrees).

The first rotating unit 125 may be configured to be rotatable while forming a seating surface of the mold 10 on one of the conversion stages 122.

Specifically, the first rotating unit 125 includes a rotating plate 125b and a driving module 125 a.

The rotating plate 125b forms a seating surface of the mold 10, and is rotatably provided on one of the transfer tables 122 a. The horizontal seating surface 122' of one of the transfer tables 122a and the upper surface of the rotating plate 125b on which the mold 10 is seated can form the same plane. Therefore, a hole or a groove may be formed in one of the conversion stages 122a, and the rotation plate 125b may be inserted into the hole or the groove.

A rotation shaft (not shown) extends toward the lower side of the rotation plate 125b, and the rotation shaft is connected to the driving module 125 a. That is, the driving module 125a is formed to rotate the rotation plate 125b by the rotation shaft.

The first rotating unit 125 may be formed in such a manner as to rotate the mold 10 before applying vibration to the mold 10 by the vibration module 122 f. That is, the first rotating unit 125 may be provided on the converting table 122a located in front (transfer direction) of the converting table 122b on which the vibration module 122f is provided. In the present drawing, the first rotating unit 125 is provided on the converting table 122a disposed at the foremost, i.e., front end, among the plurality of converting tables 122.

It may be referred to that the configuration of the first rotating unit 125 is not limited thereto. The first rotating unit 125 may be formed to rotate the mold 10 after applying vibration to the mold 10 by the vibration module 122 f. For this reason, the first rotating unit 125 may be provided on a transfer table located behind (in the transfer direction) the transfer table 122b on which the vibration module 122f is provided. That is, the first rotating unit 125 may be provided on a switching stage between the switching stage 122b provided with the vibration module 122f and the switching stage 122d corresponding to the third position C where the suction hole 122h is formed. At this time, the vibration module 122f may be provided on the conversion stage disposed at the foremost, i.e., front end, among the plurality of conversion stages 122.

In the structure in which the first rotating unit 125 is provided on the converting table 122a disposed at the foremost, i.e., front end, among the plurality of converting tables 122, as in the present embodiment, the mold 10 can be transferred to the first rotating unit 125 by the mold pickup unit 121. Specifically, the mold picking unit 121 can pick up the mold 10 fed to the first position a by the mold feeding part 111 and is seated on the rotation plate 125b of the first rotation unit 125.

At this time, the mold picking unit 121 may be formed in such a manner as to support the mold 10 by hooking the mold lower supporting hook 121g thereof to the lower portion of the mold 10, and a groove 125 b' formed in such a manner as to allow the mold lower supporting hook 121g to be inserted when the mold 10 is set may be formed on the rotating plate 125 b. The groove 125 b' can be formed long in consideration of adjustment of the distance of the clamp arm 121 f. At the same time, the switching stage 122 may be provided with a groove 122a 'corresponding to the groove 125 b'.

Next, as shown in fig. 17, after the mold 10 is slidably transferred to the height correcting portion 124 by the mold transfer unit 123, if the height correcting portion 124 is raised to a predetermined position, the second rotating unit 126 is formed to clamp the mold 10 and rotate by a second angle (in the present embodiment, by +90 degrees). At this time, the mold 10 can be rotated in a state of being placed on the upper surface of the height correcting portion 124. For reference, the predetermined position may be a position higher than the mounting surface 1 on the side of the die feeding unit 112 or a position at the same height as the mounting surface 1.

Thereafter, the second rotating unit 126 is formed to slide and transfer the mold 10 from the upper surface of the height correcting unit 124 to the setting surface 1 on the mold feeding unit 112 side.

The height correcting unit 124 is formed so as to be lowered to a position set in advance when the mold 10 is transferred onto the mounting surface 1 on the mold feeding unit 112 side by the second rotating unit 126. Here, the predetermined position may be a position lower than the horizontal placement surface 122 'of the switching table 122e provided at the rear end, or a position at the same height as the horizontal placement surface 122'.

In the present drawing, the second rotating unit 126 is configured to be movable in the X-axis direction and the Z-axis direction in the drawing. Specifically, the second rotating unit 126 includes a first guide member 126a, a first moving member 126b, a second guide member 126c, a second moving member 126d, a driving unit 126e, and a clamping unit 126 f.

The first guide member 126a extends along the X-axis direction in the drawing, and the first moving member 126b is provided on the first guide member 126a so as to be slidable along the first guide member 126 a.

The second guide member 126c is mounted on the first moving member 126b, and extends in the Z-axis direction in the drawing. The second moving member 126d is provided on the second guide member 126c so as to be slidable along the second guide member 126 c.

The driving unit 126e is provided on the second moving member 126d, and provides a rotational driving force to the clamping unit 126 f.

The clamping unit 126f is provided on the driving unit 126e, is configured in a rotatable manner, and is formed to clamp the mold 10. The clamp unit 126f includes two clamp arms 126g, and the two clamp arms 126g are arranged to face each other and are formed so that the distance between them can be adjusted. Each clamp arm 126g may be provided with a roller 126h, and the roller 126h may be formed to be inserted into the grooves 11b formed on both sides of the mold 10.

When the mold 10 is clamped, the second moving member 126d moves in the Z-axis direction, and the two clamp arms 126g are configured to move so as to approach each other through the mold 10, thereby clamping the mold 10 from both sides. At this time, the roller 126h is provided so as to be able to clamp the mold 10 at an accurate position by being inserted into the groove 11 b. For example, even if the mold 10 is clamped at a slightly deviated position, the clamp arm 126g can be caused to clamp the mold 10 at an accurate position by moving the roller 126h along the circular groove 11b of the mold 10.

When the mold 10 is released, the two clamp arms 126g are separated from both sides of the mold 10, and the second moving member 126d is configured to be disengaged from the transfer path of the mold 10 by moving in the Z-axis direction.

For reference, the lens and mold transfer system 100 is configured so that the mold is not rotated during the mold transfer process when the mold is delivered in a state where the mold is not rotated in the lens molding machine. In this case, instead of the second rotating means 126 that originally performs the transferring function and the rotating function of the mold 10, the first rotating means 125 is not provided, and a transferring means that only performs the transferring function of the mold 10 is provided.

That is, the conversion table 122a originally provided with the first rotating means 125 only has the horizontal disposition surface 122' for the slide transfer of the mold 10. The transfer unit is configured to slide and transfer the mold 10 from the upper surface of the height correcting unit 124 to the mounting surface 1 on the mold feeding unit 112 side by clamping the mold 10 mounted on the upper surface of the height correcting unit 124.

Fig. 18 is a perspective view showing the mold feeding unit 112 shown in fig. 3.

As shown in fig. 18, the mold feeding unit 112 is connected to a mold inlet of the lens molding machine, and is configured to feed the mold 10 transferred to the second position B of the mounting surface 1 to the lens molding machine. In the present drawing, the seating surface 1 and the die ejecting portion 112 extend in the + Y axis direction in the drawing toward the die inlet at the second position B.

The mold feeding unit 112 preferably transfers the mold 10 in the horizontal direction so that the height does not change in the Z-axis direction.

In the present drawing, a case where the mold feeding portion 111 is formed by a pushing manner is shown. Specifically, the mold feeding section 111 includes a guide member 112a, a moving member 112b, and a pushing member 112 c.

The guide member 112a extends along the Y-axis direction in the drawing, and the moving member 112b is provided on the guide member 112a so as to slide along the guide member 112 a.

The pushing member 112c is coupled to the moving member 112b and moves together with the moving member 112 b. That is, the pushing member 112c is formed to be movable in the Y-axis direction, and is formed to push out the mold 10 from behind when the mold 10 is transferred to the second position B of the seating surface 1.

It should be noted that the placement surface 1 may be provided in the lens and mold transfer system 100 or in the lens molding machine.

Fig. 19 is a perspective view showing the molded

lens transfer units

151 and 152 and the lens material transfer unit 153 shown in fig. 3.

As shown in fig. 19, the molded

lens transfer portions

151 and 152 are formed to pick up and transfer the molded lens exposed to the outside by the pickup of the upper core 15.

When picking up the upper core 15, although the molded lens is usually placed on the lower core 14, it is rarely possible that the molded lens is attached to the upper core 15. It is to be noted that before the mold 10 is transferred to the upper core pickup part 140, vibration is applied to the mold 10 by the vibration module 122f described above, thereby facilitating separation of the molded lens from the upper core 15.

In the present drawing, the case where the molded

lens transfer sections

151 and 152 include the first molded lens transfer module 151 formed to suck the molded lens adhered to the upper core 15 and the second molded lens transfer module 152 formed to suck the molded lens mounted on the lower core 14 is shown in consideration of the possibility that the molded lens is adhered to the upper core 15.

The lens material transfer part 153 is formed in such a manner that the lens material is set on the lower core 14 of the mold 10 after the molded lens is picked up by the molded

lens transfer parts

151, 152.

The molded

lens transfer sections

151 and 152 and the lens material transfer section 153 are formed so as to be movable together along the Y-axis direction in the drawing. The first molded lens transfer module 151, the second molded lens transfer module 152, and the lens material transfer unit 153 are arranged by the movement so as to overlap the upper core 15 and the lower core 14 in this order at the third position C. At this time, the upper core 15 is disposed on the upper side, and the lower core 14 is disposed on the lower side.

The lens material transfer unit 153 is formed to pick up the lens material before moving in the Y-axis direction in the drawing together with the molded

lens transfer units

151 and 152. In the present embodiment, it is formed such that the lens raw material transfer portion 153 picks up the lens raw material loaded on the lens raw material temporary loading portion 170 when the lens raw material temporary loading portion 170 moves to the lower side of the lens raw material transfer portion 153.

The first molded lens transfer module 151, the second molded lens transfer module 152, and the lens raw material transfer section 153 are respectively disposed between the upper core 15 picked up by the upper core pickup section 140 and the lower core 14 of the mold 10 placed on the switching table 122 at the third position C.

For the above movement, the guide rail 154 is disposed so as to extend along the Y-axis direction in the drawing, and the guide rail 154 is provided with a moving member 155 attached so as to be movable along the guide rail 154 in the Y-axis direction.

The first molded lens transfer module 151, the second molded lens transfer module 152, and the lens material transfer unit 153 are mounted on the moving member 155. With the above configuration, when the moving member 155 moves along the guide rail 154, the first molded lens transfer module 151, the second molded lens transfer module 152, and the lens material transfer unit 153 are moved together.

Therefore, after the first molded lens transfer module 151 is disposed to overlap the upper mold core 15 at the third position C, the moving member 155 is moved in the + Y axis direction in the drawing, so that after the second molded lens transfer module 152 is disposed to overlap the lower mold core 14 at the third position C, the moving member 113d is moved in the-Y axis direction in the drawing so that the lens raw material transfer portion 153 is disposed to overlap the lower mold core 14 at the third position C. Here, after the second molded lens transfer module 152 is disposed to overlap the lower mold core 14 at the third position C, the moving member 155 may be moved in the-Y axis direction in the drawing so that the first molded lens transfer module 151 is disposed to overlap the lower mold core 14 at the third position C.

In the first molded lens transfer module 151, a first suction unit 151a for sucking the molded lens adhered to the upper core 15 is disposed toward the upper side, and in the second molded lens transfer module 152, a second suction unit 152a for sucking the molded lens mounted on the lower core 14 is disposed toward the lower side.

The first and second molded

lens transfer modules

151 and 152 may be formed to be movable along the Z-axis direction in the drawing. In this drawing, the second molded lens transfer module 152 includes a guide member 152b and a moving member 152c so as to be movable along the lower side, i.e., the-Z axis direction in the drawing. The guide member 152b is attached to the moving member 155, and is formed to extend along the Z-axis direction in the drawing. The moving member 152c is provided on the guide member 152b so as to be movable along the guide member 152b in the Z-axis direction in the drawing.

In the present embodiment, the first molded lens transfer module 151 is configured not to move in the Z-axis direction in the drawing. As described above, the first molded lens transfer module 151 has a structure fixed along the Z-axis direction in the drawing, and instead of this structure, the suction unit 143 of the upper core pickup unit 140 is configured to be movable along the Z-axis direction in the drawing, thereby transferring the upper core 15 to the first molded lens transfer module 151. However, the present invention is not limited thereto. Of course, the first molded lens transfer module 151 may have a structure movable along the Z-axis direction in the drawing, as in the second molded lens transfer module 152.

In the lens material transfer unit 153, an adsorption unit 153a for adsorbing the lens material is disposed facing downward. The lens material transfer unit 153 is formed to be movable in the Z-axis direction in the drawing. In this figure, the lens material transfer unit 153 includes a guide member 153b and a moving member 153c so as to be movable along the lower side, i.e., the-Z axis direction in the figure. The guide member 153b is disposed on the moving member 155, and is formed to be extended along the Z-axis direction in the drawing. The moving member 153c is provided on the guide member 153b so as to be movable along the guide member 153b in the Z-axis direction in the drawing.

In the case where the mold 10 includes the plurality of cavities 11a as in the present embodiment, the lens material transfer unit 153, the first molded lens transfer module 151, and the second molded lens transfer module 152 include a plurality of

suction units

151a and 152a corresponding to the plurality of cavities 11a, respectively.

As described above, the lens material transfer unit 153 is formed to move to the third position C together with the molded

lens transfer units

151 and 152 in a state where the lens material is picked up, and therefore, the lens material can be immediately introduced after the molded lens is taken out. Therefore, the cycle time of the lens and mold transfer system 100 can be shortened, and finally the molding speed of the aspherical lens can be increased.

At the same time, since the molded

lens transfer units

151 and 152 include the first molded lens transfer module 151 for sucking the molded lens attached to the upper core 15 and the second molded lens transfer module 152 for sucking the molded lens mounted on the lower core 14, even if the molded lens is attached to the upper core 15, the molded lens can be taken out by the first molded lens transfer module 151.

Fig. 20 is a perspective view showing the lens material pickup unit 160 shown in fig. 3, and fig. 21 is a perspective view showing the lens material temporary loading unit 170 shown in fig. 3.

As shown in fig. 20 and 21, the lens material pickup unit 160 is formed to pick up the lens material loaded on the lens material tray 160d and transfer the lens material onto the lens material temporary loading unit 170.

The lens material pickup unit 160 includes a first guide member 161, a first moving member 162, a second guide member 163, a second moving member 164, a tray suction unit 165, and a lens material suction unit 166.

The first guide member 161 is extended along the X-axis direction in the drawing, and the first moving member 162 is provided on the first guide member 161 so as to be slidable along the first guide member 161.

The second guide member 163 is provided on the first moving member 162, and extends in the Y-axis direction in the drawing.

The second moving member 164 is provided on the second guide member 163 so as to be slidable along the second guide member 163. With the above configuration, the second moving member 164 is formed so as to be movable in the X-axis direction and the Y-axis direction in the drawing. A tray suction unit 165 and a lens material suction unit 166 are mounted on the second moving member 164.

The tray suction unit 165 is formed to suck and lift the lens raw material tray 160 d. Therefore, the suction unit 165a is formed to extend downward on the tray suction unit 165, and is formed to suck and pick up the lens material tray 160d from above.

In order to stably transfer the lens material tray 160d, a plurality of tray suction units 165 may be provided and arranged to be spaced apart from each other. For example, the tray suction unit 165 can be formed to suck the upper end portion and the lower end portion of the lens raw material tray 160 d.

For reference, in the present embodiment, the tray suction unit 165 is configured not to move in the Z-axis direction in the drawing. The lens material tray supply unit 160a, which will be described later, may be formed to first raise the lens material tray 160d to a predetermined position so that the tray suction unit 165 can suck the lens material tray 160d, and then lower the lens material tray 160d after it is sucked. The lens material tray waiting section 160b to be described later may be formed such that the lens material tray 160d is first raised to a predetermined position so that the tray suction unit 165 can set the sucked lens material tray 160d, and then lowered after the lens material tray 160d is set.

Of course, the present invention is not limited thereto. It may be formed such that the lens raw material tray supply part 160a and the lens raw material tray waiting part 160b are fixed and the tray suction unit 165 can move in the Z-axis direction in the drawing.

The lens material suction unit 166 is formed to suck the lens material on the lens material tray 160d placed at the lens material tray waiting section 160 b. The lens material suction unit 166 is formed to be movable in the Z-axis direction in the drawing. Therefore, the lens material suction unit 166 includes a guide member 166a extending in the Z-axis direction in the drawing, and a moving member 166b provided on the guide member 166a so as to be slidable along the guide member 166 a. An adsorption unit 166c is formed on the moving member 166b so as to extend downward, and is formed to adsorb and pick up the lens material from above.

The lens material suction units 166 may be disposed between tray suction units 165 disposed to be spaced apart from each other.

The inner space defined by the first guide member 161 and the second guide member 163 is provided with a lens material tray supply unit 160a, a lens material tray waiting unit 160b, and a lens material tray discharge unit 160 c.

Here, the lens material tray supply unit 160a is a part that stores the lens material tray 160d on which the lens material 160e is loaded. Lens materials 160e are placed on the lens material tray 160d so as to be aligned one by one. Grooves 160f for accommodating at least a part of the lens material 160e may be formed in a matrix form on the lens material tray 160 d. The lens material tray 160d may be stacked on the lens material tray supply unit 160 a.

A cover 160 a' may be provided to the lens material tray supply unit 160a so as to be openable and closable. The cover 160 a' is in a closed state to cover the opening of the lens raw material tray supply section 160a and is opened when a control signal is applied, so that the tray suction unit 165 can suck the lens raw material tray 160d and transfer to the lens raw material tray waiting section 160 b. Thereafter, the cover 160 a' is closed again, thereby being formed to prevent foreign matter such as dust from penetrating into the lens raw material tray supply part 160 a.

The lens material tray waiting unit 160b temporarily stores the lens material tray 160d transferred by the tray suction unit 165. The lens material tray waiting unit 160b is formed to store only one lens material tray 160 d. The lens material suction unit 166 is configured to suck the lens material 160e on the lens material tray 160d located in the lens material tray waiting section 160 b.

When all the lens materials 160e are fed out from the lens material tray 160d located in the lens material tray waiting section 160b, the tray suction unit 165 sucks the lens material tray 160d and transfers the lens material tray to the lens material tray discharging section 160 c.

The lens material tray discharging unit 160c is a part that stores the lens material tray 160d in which all the lens materials 160e have been picked up by the lens material adsorbing unit 166. The lens material tray 160d can be stacked on the lens material tray discharging unit 160 c.

As shown in fig. 21, the lens material is temporarily loaded on the lens material temporary loading unit 170 before being picked up by the lens material transfer unit 153.

The lens material temporary loading unit 170 includes a plurality of loading grooves 174 for loading the lens materials individually, and the number of the plurality of loading grooves 174 may correspond to the number of the cavities 11a of the mold 10. In the present drawing, the loading slots 174 are configured in two rows and two columns corresponding to the chambers 11a configured in two rows and two columns.

The lens material temporary loading unit 170 is formed to be linearly movable back and forth between a position overlapping the lens material pickup unit 160 and a position overlapping the lens material transfer unit 153. In this figure, the lens material temporary loading section 170 is formed so as to be movable in the X-axis direction in the figure.

The lens material temporary loading unit 170 includes a guide member 171, a moving member 172, and a loading member 173.

The guide member 171 extends in the X-axis direction in the drawing, and the moving member 172 is provided on the guide member 171 so as to be slidable along the guide member 171.

The loading part 173 moves together with the moving part 172 by being coupled to the moving part 172. The mounting member 173 is provided with a plurality of mounting grooves 174 for individually housing the lens material.

The lens material temporary loading section 170 is disposed below the suction unit 166c at a position of the lens material suction unit 166 overlapping the suction unit 166 c. In the above configuration, the suction unit 166c is formed to place the lens raw material on the lens raw material temporary loading section 170 by releasing suction.

The lens material temporary loading unit 170 is disposed below the suction unit 153a at a position of the lens material transfer unit 153 overlapping the suction unit 153 a. In the above configuration, the adsorption unit 153a is formed to adsorb and pick up the lens raw material loaded on the lens raw material temporary loading section 170.

Fig. 22 is a perspective view showing the molded lens temporary mounting section 190 shown in fig. 3, and fig. 23 is a perspective view showing the molded lens mounting section 180 shown in fig. 3.

As shown in fig. 22 and 23, the molded lens temporary loading section 190 is formed to temporarily load the molded lens sucked by the second suction unit 152a of the second molded lens transfer module 152.

The molded lens temporary loading section 190 includes a plurality of loading grooves 193a for loading molded lenses independently, and the number of the plurality of loading grooves 193a may correspond to the number of the cavities 11a of the mold 10. In the present drawing, the loading slot 193a is configured in two rows and two columns corresponding to the chambers 11a configured in two rows and two columns.

The molded lens temporary mounting section 190 is formed so as to be movable in the vertical direction, i.e., the Z-axis direction in the drawing.

The molded lens temporary loading section 190 includes a guide member 191, a moving member 192, and a loading member 193.

The guide member 191 extends in the Z-axis direction in the drawing, and the moving member 192 is provided on the guide member 191 so as to be slidable along the guide member 191. In this drawing, a case is shown in which a guide rod 191a is formed extending in the Z-axis direction on the guide member 191, and the moving member 192 is provided so as to be movable along the guide rod 191 a.

A driving module formed to move the moving member 192 in the Z-axis direction may be attached or connected to the guide member 191 or the moving member 192.

The loading part 193 moves together with the moving part 192 by being coupled to the moving part 192. The loading member 193 includes a plurality of loading grooves 193a for individually accommodating molded lenses.

The suction unit 152a of the second molded lens transfer module 152 and the suction unit 185c of the molded lens mounting unit 180 are configured to be movable to a position overlapping the upper side of the mounting member 193.

The molded lens temporary loading unit 190 is disposed below the suction unit 153a at a position overlapping the suction unit 152a of the second molded lens transfer module 152. In the above configuration, the suction unit 152a is formed to set the molded lens on the molded lens temporary loading section 190 by releasing suction. At this time, the second molded lens transfer module 152 is formed to be lowered toward the molded lens temporary storage section 190.

The molded lens temporary loading section 190 is disposed below the suction unit 185c at a position overlapping the suction unit 185c of the molded lens loading section 180. In the above configuration, the suction unit 185c is formed to suck and pick up the molded lens loaded on the molded lens temporary loading section 190. At this time, the loading member 193 of the molded lens temporary loading section 190 may be formed to be raised toward the adsorption unit 185c by the movement of the moving member 192.

As shown in fig. 23, the molded lens loading unit 180 is configured to suck the molded lens sucked by the first suction unit 151a of the first molded lens transfer module 151 or the molded lens loaded on the molded lens temporary loading unit 190 and load the molded lens on the molded lens tray 188. That is, the molded lens sucked by the first suction unit 151a of the first molded lens transfer module 151 is directly sucked by the molded lens loading unit 180 and loaded on the molded lens tray 188. On the other hand, the molded lens sucked by the second suction unit 152a of the second molded lens transfer module 152 is temporarily loaded on the molded lens temporary loading unit 190, and then sucked by the molded lens loading unit 180 and loaded on the molded lens tray 188.

The molded lens loading unit 180 includes a first guide member 181, a first moving member 182, a second guide member 183, a second moving member 184, and a molded lens suction unit 185.

The first guide member 181 is extended in the X-axis direction in the drawing, and the first moving member 182 is provided on the first guide member 181 so as to be slidably movable along the first guide member 181.

The second guide part 183 is provided on the first moving part 182, and is extended in the Y-axis direction in the drawing.

The second moving member 184 is provided on the second guide member 183 so as to be slidable along the second guide member 183. With the above configuration, the second moving member 184 is formed so as to be movable in the X-axis direction and the Y-axis direction in the drawing. A molded lens suction unit 185 is mounted on the second moving member 184. The molded lens suction unit 185 may be provided with only one or a plurality of units. In this figure, the molded lens suction unit 185 is provided with two, 1/2, which is the number of cavities 11a of the mold 10.

The molded lens suction unit 185 is formed in such a manner as to be movable in the Z-axis direction in the drawing, so that the molded lens suction unit 185 can place the molded lens in the groove 189 of the molded lens tray 188. Therefore, the molded lens suction unit 185 includes a guide member 185a extending in the Z-axis direction in the drawing, and a moving member 185b provided on the guide member 185a so as to be slidable along the guide member 185 a. The suction unit 185c is formed to extend downward on the moving member 185b, and is formed to suck the molded lens on the molded lens temporary loading section 190 and to transfer the molded lens onto the tray 160 d.

A molded lens tray 188 is disposed in an inner space defined by the first guide member 181 and the second guide member 183. The molded lens tray 188 is loaded with molded lenses in an aligned manner. The molded lens tray 188 may be provided in plurality and may be arranged in a horizontal direction. In this figure, a case is shown in which a plurality of molded lens trays 188 are arranged on the molded lens tray support part 187.

Claims

1. A lens and mold transfer system, comprising:

a mold feeding section that feeds a mold discharged from a lens molding machine to a first position;

a mold transfer unit for transferring the mold located at the first position to a second position along a first direction;

a mold feeding unit for feeding the mold located at the second position to the lens molding machine; and

an upper core pickup portion that is disposed so as to overlap a transfer path of the mold between the first position and the second position, and that is formed so as to pick up an upper core of the mold in a process of transferring the mold from the first position to the second position by the mold transfer portion,

the upper die core pickup portion includes:

a driving unit which is arranged along the vertical direction and is formed in a manner that the length can be changed;

a moving member which is linked with the driving unit so as to move along the vertical direction by the driving of the driving unit;

an adsorption unit provided below the moving member and configured to adsorb the upper core; and

and a balance weight formed to reduce a load applied to the upper mold core by pulling the moving member upward when the suction unit comes into contact with the upper mold core.

2. The lens and mold transfer system of claim 1, wherein,

the moving member and the balance weight are configured to be suspended by being connected to a wire wound on at least one fixed sheave.

3. The lens and mold transfer system of claim 2, wherein,

the at least one fixed sheave includes:

a first fixed pulley disposed on the moving member; and

and a second fixed sheave disposed on the balance weight.

4. The lens and mold transfer system of claim 3, wherein,

the upper die core pick-up section further includes:

a fixed box on which the first and second fixed pulleys are mounted; and

and a guide rail which is disposed on the fixed box so as to be long in the vertical direction and guides the movement of the moving member by being coupled to the moving member.

5. The lens and mold transfer system of claim 4, wherein,

an accommodating portion for accommodating at least a part of the balance weight is formed at one side of the fixing case.

6. The lens and mold transfer system of claim 1, wherein,

the adsorption unit includes:

a main body having a hollow portion and formed of a rigid material; and

and a suction pad made of a flexible material, which is disposed in the hollow portion and is brought into contact with the upper core by suction.

7. The lens and mold transfer system of claim 6, wherein,

an end portion of the suction pad is disposed to protrude from an end portion of the main body.