CN211682363U - Lens cutting machine and lens cutting equipment of double-clamp workbench - Google Patents

Abstract

The utility model provides a lens cutting machine with double clamp workbenches and a lens cutting device, wherein the lens cutting machine comprises a cutting device, two clamp workbenches and a cutting machine base; the cutting device comprises a cutting tool, a polishing tool, a first electric spindle and a second electric spindle; a Z-axis driver, an X-axis driver; an X-axis drive is mounted on the cutter base. The two clamp workbenches are sequentially arranged on the cutting machine base along the X-axis direction; the jig working table includes a grinder table, an a-axis rotator, a B-axis rotator, and a vacuum pump. According to the lens cutting machine, the A-axis rotator and the B-axis rotator are used in the clamp workbench to control the grinding tool table to rotate around the X axis and the Y axis simultaneously, so that the arc-shaped placing surface on the grinding tool table can draw an arc shape relative to the cutting tool, and arc-shaped finished lenses with outer contours not on the same horizontal plane can be cut; and the cutting angle of the side wall of the outer contour of the lens is vertical to the cambered surface of the lens.

Description

Lens cutting machine and lens cutting equipment of double-clamp workbench

Technical Field

The utility model belongs to the technical field of a lens cutting and specifically relates to a lens cutting machine and lens cutting equipment of double-clamp workbench.

Background

In recent years, the production of spectacle lenses with various shapes mainly adopts a process of cutting and grinding, and the low-grade spectacle lenses mainly adopt the traditional manual copying machine and a single-spindle numerical control lathing machine at present, and adopt a mode of manually feeding to a lens cutting workbench and manually blanking; the existing feeding and discharging work cannot be automated, the labor cost is high, and the efficiency is low;

at present, a three-axis cutting device is mainly adopted to install a cutting tool and a grinding tool, the cut outer contour of a lens is always on the same horizontal plane, the lens is of an arc-surface-shaped structure, part of finished lenses are required to be of the arc-surface-shaped structure, and the cutting angle of the side wall of the outer contour of the lens is required to be perpendicular to the arc surface of the lens, so that the finished lenses cut by the existing three-axis cutting device cannot meet the requirements, and therefore the lens cutting machine capable of cutting the finished lenses with the arc-shaped outer contours according to the requirements needs to be developed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a unloader on lens cutting machine's high efficiency. The problem that the existing lens cutting machine cannot meet the requirement for cutting a finished lens with an arc-shaped outer contour when cutting on the same horizontal plane, and the cutting angle of the side wall of the outer contour of the lens is vertical to the arc surface of the lens is solved.

In order to solve the technical problem, the utility model adopts the following technical measures:

a lens cutting machine with double clamp workbenches comprises a cutting device, two clamp workbenches and a cutting machine base.

The cutting device comprises a cutting tool, a polishing tool, a first electric spindle for mounting the cutting tool and a second electric spindle for mounting the polishing tool; the Z-axis driver is used for synchronously driving the first electric spindle and the second electric spindle to move up and down, and the X-axis driver is used for driving the Z-axis driver to move transversely; an X-axis drive is mounted on the cutter base.

The two clamp workbenches are sequentially arranged on the cutting machine base along the X-axis direction; the fixture workbench comprises a grinding tool table, an A-axis rotator, a B-axis rotator and a vacuum pump, wherein the grinding tool table is provided with a placing surface consistent with the radian of a lens to be cut, and the center of the placing surface is provided with a negative pressure through hole communicated with the vacuum pump so that the vacuum pump generates vacuum negative pressure to adsorb the lens to be cut; the A-axis rotator is used for driving the grinding tool table to rotate around an X axis; the B-axis rotator is used for driving the A-axis rotator to rotate around a Y axis, and the B-axis rotator is fixedly installed on the cutter base.

The control mechanism is used for controlling the vacuum pump to generate vacuum negative pressure to adsorb a lens to be cut, and controlling the X-axis driver and the Z-axis driver to enable the cutting tool or the grinding tool to be positioned above the grinding tool table; and controlling the A-axis rotator and the B-axis rotator to operate so as to drive the grinding tool table to rotate around the X axis and the Y axis simultaneously, so that the arc of the outer contour of the finished lens is drawn by the cutting tool or the grinding tool corresponding to the lens to be cut on the placing surface.

The utility model discloses can also further perfect through following technical measure:

as a further improvement, the first electric spindle and the second electric spindle are arranged on a first fixing plate, and the Z-axis driver drives the first fixing plate to control the first electric spindle and the second electric spindle to move up and down; a first vertical cylinder and a second vertical cylinder are arranged on the first fixing plate respectively corresponding to the first electric spindle and the second electric spindle; the first vertical cylinder and the second vertical cylinder are used for controlling the heights of the cutting tool and the polishing tool.

As a further improvement, vertical guide rails are respectively arranged on the first fixing plate corresponding to the first electric spindle and the second electric spindle.

As a further improvement, the upper surface of the grinding tool table has two placing surfaces, and the two placing surfaces are respectively located on two sides of the X axis of the grinding tool table.

As a further improvement, the negative pressure through hole at the center of the two placing surfaces of the grinding tool table extends downwards towards the center to be combined and then extends downwards vertically to be communicated with a vacuum pump.

As a further improvement, the door also comprises a sheet metal protective door; the metal plate protective door comprises a square cover body, a left protective door, a right protective door, a belt pulley mechanism, a first horizontal guide rail and a driving motor;

the belt pulley mechanism comprises two belt pulleys and a belt arranged on the two belt pulleys, wherein the part of the belt positioned on the upper side of the belt pulley is defined as a first belt section, and the part positioned on the lower side of the belt pulley is defined as a second belt section; the first horizontal guide rail comprises a mounting seat, a guide rail rod, a first sliding seat and a second sliding seat, wherein the first sliding seat and the second sliding seat are arranged on the guide rail rod in a sliding manner; the first sliding seat is fixedly connected with the left protective door and the first belt section respectively, and the second sliding seat is fixedly connected with the right protective door and the second belt section respectively; the driving motor is used for driving the belt pulley to rotate so as to drive the left protective door and the right protective door to approach or depart from each other along the guide rail rod;

the first horizontal guide rail, the second horizontal guide rail and the two belt pulleys are fixedly arranged on the inner side wall of the square cover body, and openings are formed in the side wall of the square cover body corresponding to the left protective door and the right protective door; the square cover body is arranged on the cutting machine base.

The utility model also provides a lens cutting device, which comprises the lens cutting machine and the feeding and discharging device; the feeding and discharging device comprises a mechanical arm mechanism, a material pushing mechanism and a material storing mechanism;

the mechanical arm mechanism is used for sequentially taking the to-be-cut lenses from a reserved material taking position in the material pushing mechanism to be fed onto a placing surface of the placing table, and feeding the cut lens finished products onto the material storing mechanism from the placing surface of the placing table;

the material pushing mechanism is used for stacking and placing a plurality of lenses to be cut and sequentially moving the lenses to be cut to a preset material taking position;

wherein, the manipulator mechanism includes: the vacuum suction nozzle is used for adsorbing or releasing the lens; the vertical driver is used for driving the vacuum suction nozzle to move up and down; the linear driver is used for driving the vertical driver to do linear motion in the horizontal direction; and the rotary driver is used for driving the linear driver to rotate on a horizontal plane.

As a further improvement, the pushing mechanism comprises a pushing shell, the pushing shell is provided with a vertical cavity for limiting the lens to be cut to vertically move in the pushing shell, and the upper part of the vertical cavity is provided with a preset material taking position for a feeding manipulator to take materials; the driving unit is used for pushing the lens to be cut to move up and down in the vertical cavity; the detection unit is in signal connection with the driving unit and is used for detecting whether a lens to be cut exists at a preset material taking position or not and transmitting a signal which does not detect the lens to be cut to the driving unit, and the driving unit drives the lens to be cut to move upwards by a distance of the thickness of the lens to be cut once.

As a further improvement, the storage mechanism comprises a rotary cylinder, a rotary table and four storage boxes arranged on the rotary table, wherein the four storage boxes are arranged in a pairwise symmetry manner; two storage boxes which are symmetrically arranged are defined as a group of storage boxes, and the rotary cylinder is used for rotating the rotary disc so that one group of empty storage boxes replaces the other group of storage boxes to receive the lens finished products which are discharged.

As a further improvement, the number of the pushing mechanisms is two, and two vertical cavities are arranged in the pushing shell of each pushing mechanism; two sides of the driving end of the linear driver are respectively provided with a vertical driver; the vacuum suction nozzles of the two vertical drivers are used for respectively taking materials from the two material pushing mechanisms; the storage mechanism is provided with two symmetrically arranged storage boxes, and the two storage boxes are used for storing two lens finished products discharged by the vertical driver.

Compared with the prior art, the utility model has the advantages of it is following:

the cutting device of the lens cutting machine adopts two axial directions of vertical driving and horizontal driving to control a cutting tool and a grinding tool, and controls a grinding tool table to rotate around an X axis and rotate around a Y axis simultaneously by using an A-axis rotator and a B-axis rotator in a clamp workbench, so that an arc placing surface on the grinding tool table can draw an arc relative to the cutting tool, and the arc is relatively drawn on an arc surface rather than only on the same horizontal plane, thereby cutting a finished lens with an arc outer contour which is not on the same horizontal plane; and the cutting angle of the side wall of the outer contour of the lens is vertical to the cambered surface of the lens.

And moreover, through the design of the double-clamp workbench and the double electric spindles, the working efficiency and the cutting efficiency can be improved.

Further, in lens cutting equipment, this application has still included last unloader, cooperatees through manipulator mechanism, pushing equipment and storage mechanism three, has accomplished the function to the automatic last unloading lens of going up in the cutting lens operation flow to replace the artifical unloading of accomplishing the lens, improve work efficiency, reduce the cost of labor.

The storage mechanism is provided with the storage mechanism for the finished lens products, so that the finished lens products can be conveniently stored and taken out; and the manipulator mechanism of this application comprises vacuum suction nozzle, vertical driver, linear actuator and rotary actuator to the flexibility of its manipulator is high, can adapt to most numerical control lens car mascerating machine at present. In addition, the feeding and discharging device is low in cost and convenient to assemble and use.

Drawings

Fig. 1 is a schematic structural view of a lens cutting apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a hidden metal plate protective door of the lens cutting device according to the embodiment of the present invention;

FIG. 3 is a schematic structural view of a lens cutting machine according to an embodiment of the present invention;

FIG. 4 is a schematic view of the cutting apparatus of FIG. 3;

FIG. 5 is a schematic view of the fixture table of FIG. 3;

FIG. 6 is a cross-sectional structural view of the abrasive article table of FIG. 5;

FIG. 7 is a schematic structural view of the loading and unloading device shown in FIG. 1;

fig. 8 is a schematic structural view of the robot mechanism 2 in fig. 7;

FIG. 9 is a schematic view of the pusher mechanism of FIG. 7;

FIG. 10 is a schematic view of the pusher housing of FIG. 9;

FIG. 11 is a schematic configuration view of a drive unit of the pusher mechanism of FIG. 9;

FIG. 12 is a first perspective structural view of the sheet metal guard door of FIG. 1;

FIG. 13 is a second perspective structural view of the sheet metal guard door of FIG. 1;

fig. 14 is a partial enlarged structural view of a1 of fig. 12;

fig. 15 is a schematic structural view of the guard door having the square cover of fig. 1.

Description of the main elements

The device comprises a material pushing mechanism 1, a material pushing shell 11, a vertical cavity 111, a driving unit 12, a PLC (programmable logic controller) 121, a stepping motor 122, a ball screw assembly 123, a lens tray 124, a first limit sensor 13, a second limit sensor 14, a detection plate 15, an optical fiber amplifier 161, an induction receiving end 162, a manipulator mechanism 2, a vacuum suction nozzle 21, a vertical driver 22, a linear driver 23, a rotary driver 24, a vacuum suction nozzle 25, a linear guide rail 231, a linear long rod 232, a linear air cylinder 233, a storage mechanism 3, a rotary air cylinder 31, a rotary table 32, a storage box 33, a cutting device 4, a Z-axis driver 41, an X-axis driver 42, a first electric spindle 43, a second electric spindle 44, a cutting tool 45, a polishing tool 46, a first fixing plate 47, a first vertical air cylinder 48, a second vertical air cylinder 49, a clamp workbench 5, a grinding tool table 51, an A-axis rotator 52 and a B-, The device comprises a negative pressure through hole 54, a cutting machine base 6, a sheet metal protective door 7, a left protective door 71, a right protective door 72, a belt pulley mechanism 73, a belt pulley 74, a first belt section 751, a second belt section 752, a first horizontal guide rail 76, an installation seat 761, a guide rail rod 762, a first sliding seat 763, a second sliding seat 764, a second horizontal guide rail 765, a handle 77, a driving motor 78 and a square cover body 79.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1 to 6, a lens cutting machine with dual-clamp worktable includes a cutting device 4, two clamp worktables 5, and a cutting machine base 6.

The cutting device 4 comprises a cutting tool 45, a grinding tool 46, a first electric spindle 43 for mounting the cutting tool 45, and a second electric spindle 44 for mounting the grinding tool 46; a Z-axis driver 41 for synchronously driving the first electric spindle 43 and the second electric spindle 44 to move up and down, and an X-axis driver 42 for driving the Z-axis driver 41 to move transversely; the X-axis drive 42 is mounted on the cutter base 6.

The two clamp workbenches 5 are sequentially arranged on the cutting machine base 6 along the X-axis direction; the fixture workbench 5 comprises a grinding tool table 51, an a-axis rotator 52, a B-axis rotator 53 and a vacuum pump (not shown in the figure), wherein the grinding tool table 51 is provided with a placing surface consistent with the radian of the lens to be cut, and the center of the placing surface is provided with a negative pressure through hole 54 communicated with the vacuum pump, so that the vacuum pump generates vacuum negative pressure to adsorb the lens to be cut.

The A-axis rotator 52 is used for driving the grinding tool table 51 to rotate around the X axis; the B-axis rotator 53 is used for driving the a-axis rotator 52 to rotate around the Y-axis, and the B-axis rotator 53 is fixedly installed on the cutter base 6.

A control mechanism for controlling the vacuum pump to generate vacuum negative pressure, so that the negative pressure through hole 54 on the grinding tool table 51 adsorbs the lens to be cut, and then controlling the X-axis driver 42 and the Z-axis driver 41 to make the cutting tool 45 or the grinding tool 46 be located at a position above the grinding tool table 51.

And controlling the A-axis rotator 52 and the B-axis rotator 53 to operate to drive the grinding tool table 51 to rotate around the X axis and the Y axis simultaneously, so that the arc of the outer contour of the finished lens is drawn by the cutting tool 45 or the grinding tool 46 corresponding to the lens to be cut on the placing surface.

The cutting device of the lens cutting machine adopts two axial directions of vertical driving and horizontal driving to control the cutting tool 45 and the grinding tool 46, and controls the grinding tool table 51 to rotate around the X axis and the Y axis simultaneously by utilizing the A-axis rotator 52 and the B-axis rotator 53 in the clamp workbench 5, so that the arc-shaped placing surface on the grinding tool table 51 can draw an arc shape relative to the cutting tool, and the arc shape is relatively drawn on the arc-shaped surface rather than only on the same horizontal plane, thereby cutting the finished lens with the outer contour not on the same horizontal plane but also in an arc shape; and, through the rotation mode of anchor clamps workstation 5, let the cutting angle of lens outline lateral wall after the cutting be mutually perpendicular with the lens cambered surface, accord with the demand of present part lens.

And, through the design of two anchor clamps workstation 5 and two electric main shafts, can cut simultaneously and polish the lens, reduce the time of changing the cutter to improve work efficiency, cutting efficiency.

Referring to fig. 3 and 4, the first electric spindle 43 and the second electric spindle 44 are disposed on a first fixing plate 47, and the Z-axis driver 41 drives the first fixing plate 47 to control the first electric spindle 43 and the second electric spindle 44 to move up and down; a first vertical cylinder 48 and a second vertical cylinder 49 are respectively arranged on the first fixing plate 47 corresponding to the first electric spindle 43 and the second electric spindle 44; the first vertical cylinder 48 and the second vertical cylinder 49 are used for controlling the heights of the cutting tool 45 and the grinding tool 46.

Because the two fixture workbenches 5 can correspondingly rotate according to the processing program of the outer contour of the lens under the control of the control mechanism, the B-axis rotator 53 of which the output end rotates around the Y axis is arranged on the base 6 of the cutting machine, the driving motor of the B-axis rotator is fixed, and the output end of the B-axis rotator 52 controls the A-axis rotator 52 to swing around the Y axis; since the a-axis rotator 52 is driven to swing by the B-axis rotator 53, there is a possibility that one of the electric spindles collides with the a-axis rotator 52 when the other electric spindle is operated with respect to the grinder table.

For example, referring to fig. 3, when the second electric spindle 44 is operated with respect to the left clamp table 5, if the first electric spindle 43 is not adjusted in height, it may collide with the driving motor of the a-axis rotator 52, causing unnecessary loss.

Referring to fig. 4, in order to enhance the stability of the movement of the cutting tool 45 or the grinding tool 46, vertical guide rails are respectively disposed on the first fixing plate 47 corresponding to the first electric spindle 43 and the second electric spindle 44.

Referring to fig. 5 and 6, the upper surface of the grinding tool table 51 has two placing surfaces, and the two placing surfaces are respectively located at two sides of the X-axis of the grinding tool table 51. One grinder table 51 holds two lenses to be cut, which helps to provide efficiency without affecting the operation and reduces the feeding and blanking time.

Referring to fig. 6, the negative pressure through hole 54 at the center of the two placement surfaces of the grinding tool table 51 extends downward toward the center and then extends downward vertically to communicate with the vacuum pump. In the present embodiment, in which the negative pressure through hole 54 simultaneously penetrates through the output shaft of the a-axis rotator 52 to be connected to the vacuum pump, specifically, the negative pressure through hole 54 simultaneously penetrates through the output shaft of the a-axis rotator 52 to be connected to the vacuum pump through a hose, so that the negative pressure work is not affected by the swing of the grinder table 51.

Further, please refer to fig. 1 and fig. 12 to fig. 15; the door also comprises a metal plate protective door 7; the sheet metal protective door 7 comprises a square cover 79, a left protective door 71, a right protective door 72, a belt pulley mechanism 73, a first horizontal guide rail 76 and a driving motor 78. The square cover 79 is mounted on the cutter base 6.

The pulley mechanism 73 includes two pulleys 74 and a belt mounted on the two pulleys, and defines a first belt section 751 on the upper side of the pulley and a second belt section 752 on the lower side of the pulley.

A first horizontal guide rail 76, including a mounting seat 761, a guide rail rod 762, a first slide seat 763 and a second slide seat 764 slidably disposed on the guide rail rod; the first slide 763 is fixedly connected to the left guard door 71 and the first belt segment 751, respectively, and the second slide 764 is fixedly connected to the right guard door 72 and the second belt segment 752, respectively.

And a driving motor 78, wherein the driving motor 78 is used for driving the pulley 74 to rotate so as to drive the left protective door 71 and the right protective door 72 to move close to or away from each other along the guide rail rod 762.

The utility model discloses a driving motor carries out automatic control, and when the lathe machining part, guard gate self-closing, machine tool machining accomplishes the back, and the guard gate is automatic to be opened. Specifically, adopt belt pulley mechanism, because the upper and lower strip of belt removes opposite direction, consequently can make two door reverse motions, realize that the protective door closes and opens, and is swift convenient.

Further, this lathe panel beating guard gate still includes second horizontal guide 765, second horizontal guide 765 is located left guard gate 71 with right guard gate 72 bottom, and respectively with left guard gate 71 with right guard gate 72 sliding connection.

Specifically, a sleeve that slides relative to the second horizontal guide rail 765 may be disposed at the bottom of the left protective door 71 and the right protective door 72, and the sleeve is slidably connected to the second horizontal guide rail 765. The second horizontal guide rail 765 is parallel to the first horizontal guide rail 76, and is matched with the first horizontal guide rail 76 through the second horizontal guide rail 765, so that when the driving motor 78 is used for driving the pulley 74 to rotate, the left protective door 71 and the right protective door 72 can be driven to move close to or away from each other stably along the guide rail rod 762.

The first horizontal guide rail 76, the second horizontal guide rail 765 and the two belt pulleys 74 are all fixedly mounted on the inner side wall of the square cover 79, and openings are formed in the positions, corresponding to the left protective door 71 and the right protective door 72, of the side wall of the square cover 79.

When the left protective door 71 and the right protective door 72 are moved away from each other by the pulley mechanism 73, they are opened along the guide rail rod 762 in a manner of being close to the inner side wall of the square cover 79. Thereby exposing the opening of the square-shaped cover 79 to place or remove an article inside.

The driving motor is in signal connection with an external controller to automatically control the left protective door and the right protective door to be close to or far away from the guide rail rod. The equipment is more intelligent and the Internet of things is realized.

In order to prevent the driving device from being out of order, the left protective door 71 and the right protective door 72 are respectively provided with a handle 77 to assist in handling the problem when necessary. And, transparent glass is also arranged on the left protective door 71 and the right protective door 72 for observing the internal processing condition.

Please refer to fig. 1, fig. 2, fig. 7 to fig. 11; the utility model also provides a lens cutting device, the lens cutting machine and the feeding and discharging device; the loading and unloading device comprises a mechanical arm mechanism 2, a material pushing mechanism 1 and a material storing mechanism 3.

The mechanical arm mechanism 2 is used for sequentially taking the to-be-cut lenses to be fed from the reserved material taking positions in the material pushing mechanism 1, and feeding the cut lens finished products to the material storage mechanism 3. The material pushing mechanism 1 is used for stacking and placing a plurality of lenses to be cut, and sequentially moving the lenses to be cut to a preset material taking position.

Wherein, the manipulator mechanism includes:

a vacuum nozzle 21 for sucking or releasing the lens;

a vertical driver 22 for driving the vacuum suction nozzle 21 to move up and down;

the linear driver 23 is used for driving the vertical driver 22 to do linear motion in the horizontal direction;

and the rotary driver 24 is used for driving the linear driver 23 to rotate on the horizontal plane.

This application has accomplished the function of unloading the lens on the automation in the cutting lens operation flow through mechanical hand mechanism 2, pushing equipment 1 and the cooperation of 3 three of storage mechanism to replace the artifical unloading of accomplishing the lens, improve work efficiency, reduce the cost of labor.

The storage mechanism 3 with the finished lens products is provided, so that the finished lens products can be conveniently stored and taken out; and the manipulator mechanism 2 of this application comprises vacuum suction nozzle 21, vertical driver 22, linear actuator 23 and rotary actuator 24 to the flexibility of its manipulator is high, can adapt to most numerical control lens car mascerating machine at present. In addition, the feeding and discharging device is low in cost and convenient to assemble and use.

The pushing mechanism 1 comprises a pushing shell 11, a driving unit 12 and a detection unit.

The material pushing device comprises a material pushing shell 11, wherein the material pushing shell 11 is provided with a vertical cavity 111 used for limiting the lens to be cut to vertically move in the vertical cavity, and the upper part of the vertical cavity 111 is provided with a preset material taking position for a feeding manipulator to take materials.

And the driving unit 12 is used for pushing the lens to be cut to move up and down in the vertical cavity 111.

And the detection unit is in signal connection with the driving unit 12 and is used for detecting whether a lens to be cut exists at a preset material taking position or not and transmitting a signal which does not detect the lens to be cut to the driving unit, and the driving unit drives the lens to be cut to move upwards by the thickness of one lens to be cut at a time.

The lens to be cut is placed by adopting the material pushing shell 11 with the vertical cavity 111, so that the space is saved, and a plurality of lenses to be cut can be vertically placed. Whether a lens to be cut exists at a preset material taking position is detected by using the detection unit, a signal that the lens to be cut is not detected is transmitted to the driving unit 12, and the driving unit 12 drives the lens to be cut to move upwards by the thickness of one lens to be cut at a time, so that the effect of accurate automatic material pushing is achieved.

The driving unit 12 includes a PLC controller, a stepping motor 122, a ball screw assembly 123, and a lens tray 124, and the lens tray 124 is used for holding a lens to be cut in the vertical cavity 111; the stepping motor 122 is used for controlling the lens tray to move up and down in the vertical cavity 111 through the ball screw assembly 123; the PLC controller is configured to control a working state of the stepping motor 122 according to a signal.

The device also comprises a first limit sensor 13 and a second limit sensor 14; defining an upper limit position of the preset lens tray 124 in the vertical cavity 111 as a first limit position, and defining a lower limit position of the preset lens tray 124 in the vertical cavity 111 as a second limit position; the first limit sensor 13 is used for detecting whether the lens tray 124 is located at the first limit position, and sending a signal for detecting that the lens tray 124 is located at the first limit position to the driving unit, so that the driving unit 12 does not drive the lens tray to move upwards any more.

The second limit sensor 14 is used for detecting whether the lens tray 124 is located at the second limit position, and sending a signal for detecting that the lens tray 124 is located at the second limit position to the driving unit, so that the driving unit 12 does not drive the lens tray to move downwards any more.

The first limit sensor 13 and the second limit sensor 14 are adopted, so that instrument damage or other problems caused by excessive movement of the driving unit 12 are prevented.

When the lens tray 124 is located at the first limit position, the lens to be cut on the lens tray 124 is located at the preset material taking position. The distance difference between the first limit position and the second limit position is integral multiple of the thickness of the lens to be cut. Therefore, in the application, the distance difference between the first limit position and the second limit position is an integral multiple of the thickness of the lens to be cut, so that the lens can be conveniently placed and taken; the positioning is accurate and the use is good.

The ball assembly 123 comprises a vertical screw rod, a nut seat and a vertical guide rail; the nut seat is in sliding fit with the vertical guide rail and in threaded fit with the vertical screw rod, the lens tray 124 is fixedly connected with the nut seat, and the stepping motor 122 is used for driving the vertical screw rod to rotate so as to move the lens tray 124 up and down.

Further, a vertical opening is formed in the side wall of the vertical cavity 111, the vertical guide rail and the nut seat are located outside the material pushing shell 11, one end of the lens tray 124 is fixedly arranged on the nut seat, and the other end of the lens tray extends into the vertical cavity 111 to lift the lens.

The first limit sensor 13 and the second limit sensor 14 are disposed on the outer side wall of the material pushing housing 11.

The nut seat is provided with a detection plate 15, the detection plate 15 is used for moving up and down along with the nut seat, and is in induction fit with the first limit sensor 13 or the second limit sensor 14 when passing through the first limit sensor 13 or the second limit sensor 14.

Further, in this application the detecting unit includes optical fiber amplifier 161 and response receiving terminal 162, just the upper portion of pushing away material casing 11 is equipped with the breach that supplies mutual induction between optical fiber amplifier 161 and the response receiving terminal 162, not only can be accurate detect, can also let and wait to cut the lens and get the material position, also protected by pushing away material casing, be difficult to drop.

Two vertical cavities 111 are arranged in the material pushing shell 11 side by side, and the optical fiber amplifier 161 and the sensing receiving end 162 are arranged on two sides of the two vertical cavities 111. Two vertical cavities 111 can adorn more lens of waiting to cut, and convenient while material loading improves the operating efficiency.

In the present embodiment, the pushing mechanism 1 has two, and the vacuum suction nozzle 21 has four corresponding to the pushing mechanism 1. Referring to fig. 2 and 8, for the structural flexibility, in the present embodiment, two vertical drivers 22 are adopted, and each vertical driver 22 is provided with two vacuum suction nozzles 21.

The linear actuator 23 comprises a linear guide rail 231, a linear long rod 232 and a linear air cylinder 233, the linear guide rail 231 is arranged at the driving end of the rotary actuator 24, the linear long rod 232 is in sliding fit with the linear guide rail 231, and the linear air cylinder 233 is used for driving the linear long rod 232 to slide relative to the linear guide rail 231. The linear driver 23 is ingenious in design, flexible in rotation and stable in structure, and is an innovative design of the inventor.

Wherein, the storage mechanism 3 includes a rotary cylinder 31, a rotary table 32 and four storage boxes 33 arranged on the rotary table, and the four storage boxes 33 are arranged in two-to-two symmetry. Two symmetrically arranged storage cases 33 are defined as a set of storage cases, and the rotary cylinder 31 is used for rotating the rotary disk 32, so that one set of empty storage cases 33 is replaced with the other set of storage cases 33 to receive the lens finished products.

The working flow of the cutting equipment is as follows:

s1, the two pushing mechanisms 1 simultaneously convey the lens tray to be cut to a preset material taking position through the lens tray;

s2, the manipulator mechanism sucks away four lenses to be cut in the two material pushing mechanisms 1 through the four vacuum suction nozzles 21 at the tail ends, and feeds the lenses to the grinding tool tables 51 of the two clamp workbenches 5;

the material pushing mechanism 1 automatically supports a lens to be cut by one lens thickness for taking materials;

s3, the vacuum pump generates vacuum negative pressure, so that the negative pressure through hole 54 on the grinding tool table 51 adsorbs the lens to be cut;

s4, X-axis driver 42 and Z-axis driver 41 to position the cutting tool of first motorized spindle 43 above the grinder table 51 of left clamp table 5; the second vertical cylinder 49 elevates the second electric spindle 43 so as not to interfere with the a-axis rotator 52.

And controlling the A-axis rotator 52 and the B-axis rotator 53 of the right clamp workbench 5 to work so as to drive the grinding tool table 51 to rotate around the X axis and the Y axis simultaneously, so that the arc of the outer contour of the finished lens is drawn by the cutting tool 45 corresponding to the lens to be cut on the placing surface.

S5, the X-axis driver 42 drives the first fixing plate 47 to move left, so that the first electric spindle 43 is aligned with the grinder table 51 of the left clamp table 5, and the second vertical air cylinder 49 reduces the height of the second electric spindle 43 to align with the grinder table 51 of the right clamp table 5;

and the cutting tool 45 cuts the lens to be cut on the grinder table 51 of the left jig table 5, and at the same time, the grinding tool 46 grinds the outer contour of the cut-completed lens on the grinder table 51 of the right jig table 5.

S6, the X-axis driver 42 drives the first fixing plate 47 to move left, and the first vertical air cylinder 48 increases the height of the first electric spindle 42; the second electric spindle 44 is aligned with the grinder table 51 of the left jig table 5, and the grinding tool 46 grinds the outer contour of the cut lens on the grinder table 51 of the left jig table 5.

And S7, the X-axis driver 42 and the X-axis Z-axis driver 41 are reset, and the mechanical arm mechanism 2 places the finished lenses on the two clamp workbenches 5 in the storage mechanism.

The above control method is only one of the embodiments, and other embodiments further include automatic opening and closing cooperation of the sheet metal protective door.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A lens cutting machine with double clamp workbenches is characterized by comprising a cutting device, two clamp workbenches and a cutter base;

the cutting device comprises a cutting tool, a polishing tool, a first electric spindle for mounting the cutting tool and a second electric spindle for mounting the polishing tool; the Z-axis driver is used for synchronously driving the first electric spindle and the second electric spindle to move up and down, and the X-axis driver is used for driving the Z-axis driver to move transversely; the X-axis driver is arranged on the cutter base;

the two clamp workbenches are sequentially arranged on the cutting machine base along the X-axis direction; the fixture workbench comprises a grinding tool table, an A-axis rotator, a B-axis rotator and a vacuum pump, wherein the grinding tool table is provided with a placing surface consistent with the radian of a lens to be cut, and the center of the placing surface is provided with a negative pressure through hole communicated with the vacuum pump so that the vacuum pump generates vacuum negative pressure to adsorb the lens to be cut; the A-axis rotator is used for driving the grinding tool table to rotate around an X axis; the B-axis rotator is used for driving the A-axis rotator to rotate around a Y axis and is fixedly arranged on the cutter base;

the control mechanism is used for controlling the vacuum pump to generate vacuum negative pressure to adsorb a lens to be cut, and controlling the X-axis driver and the Z-axis driver to enable the cutting tool or the grinding tool to be positioned above the grinding tool table; and controlling the A-axis rotator and the B-axis rotator to operate so as to drive the grinding tool table to rotate around the X axis and the Y axis simultaneously, so that the arc of the outer contour of the finished lens is drawn by the cutting tool or the grinding tool corresponding to the lens to be cut on the placing surface.

2. The lens cutting machine according to claim 1, wherein the first electric spindle and the second electric spindle are disposed on a first fixing plate, and the Z-axis driver controls the first electric spindle and the second electric spindle to move up and down by driving the first fixing plate; a first vertical cylinder and a second vertical cylinder are arranged on the first fixing plate respectively corresponding to the first electric spindle and the second electric spindle; the first vertical cylinder and the second vertical cylinder are used for controlling the heights of the cutting tool and the polishing tool.

3. The lens cutting machine according to claim 2, wherein vertical guide rails are provided on the first fixing plate corresponding to the first electric spindle and the second electric spindle, respectively.

4. The lens cutting machine according to claim 1, wherein the upper surface of the grinder table has two placement surfaces, which are respectively located on both sides of the X-axis of the grinder table.

5. The lens cutting machine according to claim 4, wherein the negative pressure through hole at the center of the two placement surfaces of the grinding tool table extends off center to be closed and then extends vertically downward to communicate with the vacuum pump.

6. The lens cutting machine according to claim 1, further comprising a sheet metal guard door; the metal plate protective door comprises a square cover body, a left protective door, a right protective door, a belt pulley mechanism, a first horizontal guide rail and a driving motor;

the belt pulley mechanism comprises two belt pulleys and a belt arranged on the two belt pulleys, wherein the part of the belt positioned on the upper side of the belt pulley is defined as a first belt section, and the part positioned on the lower side of the belt pulley is defined as a second belt section; the first horizontal guide rail comprises a mounting seat, a guide rail rod, a first sliding seat and a second sliding seat, wherein the first sliding seat and the second sliding seat are arranged on the guide rail rod in a sliding manner; the first sliding seat is fixedly connected with the left protective door and the first belt section respectively, and the second sliding seat is fixedly connected with the right protective door and the second belt section respectively; the driving motor is used for driving the belt pulley to rotate so as to drive the left protective door and the right protective door to approach or depart from each other along the guide rail rod;

the first horizontal guide rail, the second horizontal guide rail and the two belt pulleys are fixedly arranged on the inner side wall of the square cover body, and openings are formed in the side wall of the square cover body corresponding to the left protective door and the right protective door; the square cover body is arranged on the cutting machine base.

7. A lens cutting apparatus comprising the lens cutting machine according to claim 1 and a loading and unloading device; the feeding and discharging device comprises a mechanical arm mechanism, a material pushing mechanism and a material storing mechanism;

the mechanical arm mechanism is used for sequentially taking the to-be-cut lenses from a reserved material taking position in the material pushing mechanism to be fed onto a placing surface of the placing table, and feeding the cut lens finished products onto the material storing mechanism from the placing surface of the placing table;

the material pushing mechanism is used for stacking and placing a plurality of lenses to be cut and sequentially moving the lenses to be cut to a preset material taking position;

wherein, the manipulator mechanism includes:

the vacuum suction nozzle is used for adsorbing or releasing the lens;

the vertical driver is used for driving the vacuum suction nozzle to move up and down;

the linear driver is used for driving the vertical driver to do linear motion in the horizontal direction;

and the rotary driver is used for driving the linear driver to rotate on a horizontal plane.

8. The lens cutting apparatus of claim 7,

the material pushing mechanism comprises a pushing device and a pushing device,

the lens cutting device comprises a material pushing shell, a cutting mechanism and a cutting mechanism, wherein the material pushing shell is provided with a vertical cavity used for limiting a lens to be cut to vertically move in the material pushing shell, and the upper part of the vertical cavity is provided with a preset material taking position for a feeding mechanical arm to take materials;

the driving unit is used for pushing the lens to be cut to move up and down in the vertical cavity;

the detection unit is in signal connection with the driving unit and is used for detecting whether a lens to be cut exists at a preset material taking position or not and transmitting a signal which does not detect the lens to be cut to the driving unit, and the driving unit drives the lens to be cut to move upwards by a distance of the thickness of the lens to be cut once.

9. The lens cutting apparatus according to claim 7, wherein the storage mechanism comprises a rotary cylinder, a rotary table, and four storage cases arranged on the rotary table, the four storage cases being arranged two by two symmetrically; two storage boxes which are symmetrically arranged are defined as a group of storage boxes, and the rotary cylinder is used for rotating the rotary disc so that one group of empty storage boxes replaces the other group of storage boxes to receive the lens finished products which are discharged.

10. The lens cutting apparatus of claim 8, wherein there are two pushing mechanisms, each having two vertical cavities within a pushing housing; two sides of the driving end of the linear driver are respectively provided with a vertical driver; the vacuum suction nozzles of the two vertical drivers are used for respectively taking materials from the two material pushing mechanisms; the storage mechanism is provided with two symmetrically arranged storage boxes, and the two storage boxes are used for storing two lens finished products discharged by the vertical driver.

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