CN111113962B - Equipment and method for liquid injection and mold closing of contact lenses - Google Patents
Equipment and method for liquid injection and mold closing of contact lenses Download PDFInfo
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- CN111113962B CN111113962B CN201811273774.6A CN201811273774A CN111113962B CN 111113962 B CN111113962 B CN 111113962B CN 201811273774 A CN201811273774 A CN 201811273774A CN 111113962 B CN111113962 B CN 111113962B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/00038—Production of contact lenses
- B29D11/00125—Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
- B29D11/00173—Conveying moulds
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- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a device for injecting and closing liquid for contact lenses, which comprises a frame and a working cabinet, wherein the frame is provided with a plurality of injection holes; the front end of the working cabinet is provided with a forming die conveying mechanism; the rear end of the forming die conveying mechanism is provided with a robot material taking and placing mechanism; the robot taking and placing mechanism is fixed in the rack through bolts; the working cabinet is arranged at the rear end of the robot material taking and placing mechanism; the working cabinet is provided with a turntable mechanism; the rotary table mechanism is fixed on the work cabinet through bolts; the rear end of the rotary table mechanism is provided with a die assembly mechanism; the clamping mechanism is fixed on the work cabinet through bolts; the rear end of the die assembly mechanism is provided with a liquid injection mechanism; the liquid injection mechanism is fixed on the work cabinet through bolts; a finished product output mechanism is arranged at the rear end of the liquid injection mechanism; the finished product output mechanism is fixed on the work cabinet through bolts; the automatic equipment and the automatic method solve the problems of high labor intensity and low production efficiency of the traditional contact lens manufacturing which basically adopts a manual production mode.
Description
Technical Field
The invention relates to equipment, in particular to equipment special for liquid injection and mold closing of contact lenses, and further relates to a method for liquid injection and mold closing of contact lenses, which is applied to production of contact lenses and belongs to the technical field of automatic manufacturing.
Background
At present, liquid injection and mold closing of contact lenses are generally carried out by taking a contact lens forming mold out of a plastic tray, placing the contact lens forming mold in a turntable mechanism, injecting liquid into the contact lens forming mold, realizing mold closing of an upper mold and a lower mold and welding; the automatic swinging plate for mold forming is basically performed in a manual mode, so that the labor intensity of manual operation is high, and the production rate is low.
Disclosure of Invention
In order to solve the problems, the invention provides equipment for liquid injection and mold closing of contact lenses, which can well solve the liquid injection and mold closing of contact lens dry sheets, reduce the labor intensity and accelerate the production efficiency; meanwhile, a method for injecting and closing the molds of the contact lenses by using the equipment is also provided, and the method can well realize the automatic injection and closing of the contact lenses, accelerate the production speed, improve the production efficiency and reduce the reject ratio of products;
in order to achieve the purpose, the invention adopts the technical scheme that:
the equipment for injecting and closing the liquid of the contact lens comprises a frame and a working cabinet; the working cabinet is arranged in the rack; the method is characterized in that: the front end of the working cabinet is provided with a forming die conveying mechanism; the forming die conveying mechanism is fixed in the rack through bolts; the rear end of the forming die conveying mechanism is provided with a robot material taking and placing mechanism; the robot taking and placing mechanism is fixed in the rack through bolts; the working cabinet is arranged at the rear end of the robot material taking and placing mechanism; the working cabinet is provided with a turntable mechanism; the rotary table mechanism is fixed on the work cabinet through bolts; the rear end of the rotary table mechanism is provided with a die assembly mechanism; the clamping mechanism is fixed on the work cabinet through bolts; the rear end of the die assembly mechanism is provided with a liquid injection mechanism; the liquid injection mechanism is fixed on the work cabinet through bolts; a finished product output mechanism is arranged at the rear end of the liquid injection mechanism; and the finished product output mechanism is fixed on the work cabinet through bolts.
In a further improvement, the forming die conveying mechanism comprises a conveying rack; the conveying rack is fixed on the ground in the rack through bolts; a full-disc inflow conveying belt is arranged on the conveying rack; a full tray taking-out position is arranged behind the full tray flowing-in conveying belt; a full tray filled with materials is arranged at the full tray taking-out position; an empty tray output conveying belt is also arranged on the conveying rack; the front end of the empty tray output conveyer belt is provided with an empty tray placing position; an empty tray for taking out the materials is arranged at the empty tray placing position; a forming die taking-out rack is arranged behind the empty tray placing position; the forming die taking-out rack is provided with a forming die taking-out part; the lower end of the conveying rack is provided with two motors; one is an input motor and one is an output motor; the input motor is connected with the full-plate inflow conveying belt; the output motor is connected with the empty tray outflow conveying belt; and a tray regulating mechanism for regulating the full trays is arranged at the side end of the full tray taking-out position.
The robot taking and placing mechanism comprises a robot fixing base and a robot; the robot sets up on robot unable adjustment base, and the bolt fastening is on robot unable adjustment base.
The robot is further improved by a robot driving seat, a robot rotator, a robot arm, a robot gripper linkage arm, a robot gripper and a robot gripper clamp; the robot driving seat is arranged on the robot fixing base, and the bolt is fixed on the robot fixing base; the robot rotator is arranged on the robot driving seat; the robot rotator can rotate on the robot driving seat; a robot arm is arranged on the robot rotator; a robot gripper linkage arm is arranged on the robot arm; the robot gripper linkage arm is provided with a robot gripper; four tray suckers for sucking up the plastic tray are arranged on the robot gripper; two robot gripper clamps, a first robot gripper clamp and a second robot gripper clamp are arranged below the robot gripper; the first robot gripper clamp and the second robot gripper clamp are arranged in parallel.
In a further refinement, the turntable mechanism comprises a platen; the upper end of the bedplate is provided with an index plate; a divider is arranged at the lower end of the bedplate; the end part provided with the divider is provided with a driving motor; the driving motor is connected with the divider; the dividing disc is connected with the divider; a forming die taking and placing area and a liquid injection area are arranged on the bedplate; a detector for detecting whether the forming die is placed in the jig in place is arranged at the forming die taking and placing area; four positioning jigs are arranged on the dividing plate; the dividing plate is provided with a supporting frame for fixing the die closing mechanism; the bedplate is provided with a suction positioning device; a suction positioning motor is arranged below the suction positioning device; the suction positioning motor is connected with the suction positioning device.
Further improved, the die assembly mechanism comprises a servo motor, a lifting mechanism, a floating mechanism, a counterweight mechanism 404 and a smoke extraction mechanism; the lifting mechanism is arranged at the lower end of the servo motor and is connected with the servo motor; the lifting mechanism is provided with a floating mechanism; the floating mechanism is fixed on the lifting mechanism through bolts; the lower end of the floating mechanism is provided with a counterweight mechanism; the counterweight mechanism is in axial motion connection with the floating structure; the lower end of the counterweight mechanism is provided with a smoke extraction mechanism; the smoke extraction mechanism consists of six forming die upper die vacuum chucks and six welding pieces; the welding piece is arranged on one side of the upper die vacuum chuck of the forming die.
In a further improvement, the liquid injection mechanism comprises a bottom plate; two moving devices which are used for moving the liquid injection device in front are arranged on the bottom plate; the mobile device is provided with a fixing plate for fixing the liquid injection device; a lifting mechanism supporting frame is arranged on the fixing plate; the lifting mechanism supporting frame is provided with a lifting device; two sets of liquid injection devices are arranged at the end part of the lifting device.
The finished product output mechanism is further improved and consists of an output bedplate, an output rotary table, a material disc replacement area, a finished product stacking area, a rotary table correcting and locking mechanism and a rotary table correcting and locking buckle; the output turntable and the turntable correcting and locking mechanism are arranged on the output bedplate; a rotating motor is arranged below the output bedplate; the rotating motor is connected with the output turntable and drives the output turntable to rotate; two rotary plate correcting lock catches are arranged on the output rotary plate; the rotary disc reforming lock catch is connected with the rotary disc reforming locking mechanism in a clamping mode.
The method for injecting and closing the mold by using the equipment comprises the following steps:
firstly, the forming molds are placed in the plastic trays, and the whole group of plastic trays filled with the forming molds flow into the conveying belt to the full tray taking-out position through the full tray.
And secondly, the robot grabs a full plate and places the full plate at the taking-out position of the forming die.
And thirdly, the robot picks the forming mould from the tray and places the forming mould on the turntable mechanism.
Fourthly, driving a motor to rotate to drive the indexing turntable to rotate and position by 180 degrees; completing the switching of the forming die in the liquid injection area of the pick-and-place area; when the detector detects the positioning jig, the suction positioning device sucks the lower mold of the glasses tightly and fixedly.
Fifthly, at the moment, the die closing mechanism rotates, and the servo motor drives the lifting mechanism to move up and down; after the contact lens forming mold is confirmed to be in place, the lifting mechanism descends, the upper mold of the contact lens forming mold is sucked in vacuum, and the lifting mechanism ascends to separate the upper mold from the lower mold of the forming mold.
And sixthly, injecting liquid by the liquid injection mechanism, after liquid injection is completed, descending the lifting mechanism, closing the upper die and the lower die of the forming die, applying proper pressure to the upper die and the lower die by the floating mechanism and the counterweight mechanism to ensure the closing precision of the upper die and the lower die, integrating the upper die and the lower die by fusion welding by the pad mechanism, and extracting and discharging smoke generated during fusion welding by the smoke extraction mechanism.
Seventhly, after the liquid injection and die assembly are completed, an operator takes out the material tray filled with the finished product and puts in an empty material tray; the turntable correcting and locking mechanism 605 unlocks, the rotating motor drives the output turntable 602 to rotate 180 degrees, and the turntable correcting and locking mechanism 605 locks the turntable; the empty tray rotates to a finished product stacking area, the robot grabs a finished product of liquid injection and die assembly from the turntable mechanism, and the finished product is placed on the tray and stacked; after the finished products are stacked and placed in the full trays, the output turntable 602 rotates 180 degrees to send out the full trays of finished products, and the above processes are repeated.
Compared with the prior art, the invention has the beneficial effects that by adopting the scheme: the invention is grabbed from a plastic tray by a robot, placed on a turntable mechanism, separated from an upper die and a lower die, quantitatively injected with liquid polymer materials in the lower die, and closed, pressed and welded by the upper die and the lower die; the robot takes out the contact lens forming mould from the turntable mechanism and stacks the contact lens forming mould in a finished product tray; the automatic equipment and the automatic method solve the problems of high labor intensity and low production efficiency of the traditional contact lens manufacturing which basically adopts a manual production mode.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the forming die conveying mechanism in the present invention.
FIG. 3 is a schematic structural diagram of a robot material taking and placing mechanism in the invention.
Fig. 4 is a schematic structural view of the turntable mechanism of the present invention.
FIG. 5 is a schematic view showing the structure of a clamping mechanism according to the present invention.
Fig. 6 is a schematic structural view of the liquid injection mechanism of the present invention.
Fig. 7 is a schematic structural view of a finished product output mechanism in the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1, the equipment for injecting and closing the mold of the contact lens comprises a frame and a work cabinet; the working cabinet is arranged in the rack; the front end of the working cabinet is provided with a forming die conveying mechanism 1; the forming die conveying mechanism 1 is fixed in the rack through bolts; the rear end of the forming die conveying mechanism 1 is provided with a robot taking and placing mechanism 2; the robot taking and placing mechanism 2 is fixed in the rack through bolts; the work cabinet is arranged at the rear end of the robot material taking and placing mechanism 2; the working cabinet is provided with a turntable mechanism 3; the rotary table mechanism 3 is fixed on the work cabinet through bolts; the rear end of the rotary table mechanism 3 is provided with a mould closing mechanism 4; the die clamping mechanism 4 is fixed on the work cabinet through bolts; the rear end of the die assembly mechanism 4 is provided with a liquid injection mechanism 5; the liquid injection mechanism 5 is fixed on the work cabinet through bolts; a finished product output mechanism 6 is arranged at the rear end of the liquid injection mechanism 5; and the finished product output mechanism 6 is fixed on the work cabinet through bolts.
As shown in fig. 2, the molding die conveying mechanism 1 includes a conveyor frame 101; the conveying rack 101 is fixed on the ground in the rack through bolts; a full-disc inflow conveying belt 103 is arranged on the conveying rack 101; a full tray taking-out position 111 is arranged behind the full tray inflow conveying belt 103; a full tray 110 filled with materials is arranged on the full tray taking-out position 111; an empty tray output conveyer belt 105 is also arranged on the conveyer frame 101; the front end of the empty tray output conveyer belt 105 is provided with an empty tray placing position 106; an empty tray 107 for taking out the materials is arranged at the empty tray placing position 106; a forming die taking-out rack 108 is arranged behind the empty tray placing position 106; a forming die taking-out position 109 is arranged on the forming die taking-out rack 108; the lower end of the conveying rack 101 is provided with two motors; one input motor 102 and one output motor 104; the input motor 102 is connected with a full-plate inflow conveying belt 103; the output motor 104 is connected with an empty tray outflow conveying belt 105; and a tray regulating mechanism 112 for regulating the full trays is arranged at the side end of the full tray taking-out position 111.
In the process, the forming molds are placed in the plastic trays, and the whole group of plastic trays filled with the forming molds flow into the conveying belt to the full tray taking-out position through the full tray; the robot grabs a full plate and places the full plate at the taking-out position of the forming die; the robot picks the forming mould from the tray, places the forming mould on the turntable mechanism and supplies the subsequent flow; when all the forming molds in the tray at the forming mold taking-out position are taken out, the robot grabs and places the empty tray which is taken out at the empty tray stacking position, and then takes the full tray from the full tray taking-out position and places the full tray at the forming mold taking-out position (the process is circulated); when the trays in the full tray taking-out position are completely taken out, the trays flow into the conveying belt from the full trays and continuously flow into the grouped full trays to the full tray taking-out position; when the number of layers of the empty tray stacking positions reaches a set number, the grouped empty trays flow out of the empty trays to be output through the conveying belt.
As shown in fig. 3, the robot taking and placing mechanism 2 includes a robot fixing base 201 and a robot; the robot is arranged on the robot fixing base 201, and is fixed on the robot fixing base 201 through bolts.
The robot comprises a robot driving seat 202, a robot rotator 203, a robot arm 204, a robot gripper linkage arm 205, a robot gripper 206 and a robot gripper clamp; the robot driving seat 202 is arranged on the robot fixing base 201, and is fixed on the robot fixing base 201 through bolts; the robot rotator 203 is disposed on the robot driving seat 202. The robot rotator 203 can rotate on the robot driving seat 202; a robot arm 204 is arranged on the robot rotator 203; a robot gripper linkage arm 205 is arranged on the robot arm 204; and a robot gripper 206 is arranged on the robot gripper linkage arm 205.
Four tray suction cups 207 for sucking up the plastic trays are arranged on the robot gripper 206.
Two robot gripper clamps are arranged below the robot gripper 206, namely a first robot gripper clamp 208 and a second robot gripper clamp 210; the first robot gripper clamp 208 and the second robot gripper clamp 210 are arranged in parallel; specifically; two clamp fixing discs, namely a first clamp fixing disc (not marked in the figure) and a second clamp fixing disc 209, are arranged below the robot gripper 206; the lower end of the first clamp fixing disc is provided with a robot gripper clamp which is a first robot gripper clamp 208; a robot gripper clamp is arranged at the lower end of the second clamp fixing disc 209 and is a second robot gripper clamp 210; since the first and second jig fixing disks 209; the first robot gripper jaw 208 is juxtaposed with the second robot gripper jaw 210.
Preferably, the robot is a six-axis robot; the robotic arm 204 is a six-axis robotic arm.
In the process, a six-axis robot is arranged on a base and provided with a robot gripper clamp; the invention fully utilizes the flexibility of the robot and realizes the complex action of the three-dimensional space; robot tongs anchor clamps possess getting of two kinds of materials and put the function: firstly, taking and placing (two taking at a time) the contact lens forming mold, and secondly, taking and placing the plastic tray; in addition, the gripper clamp has a displacement function, and because the center distances of the two contact lens forming molds are different when the plastic tray and the turntable mechanism jig are placed, the two center distances are converted through displacement.
As shown in fig. 4, the turntable mechanism 3 includes a platen 301; the upper end of the bedplate 301 is provided with an index plate 303; a divider 307 is arranged at the lower end of the bedplate 301; the end part provided with the divider 307 is provided with a driving motor 308; the driving motor 308 is connected with the divider 307; the dividing disc 303 is connected with a divider 307; a forming die taking and placing area 3012 and a liquid injection area 3011 are arranged on the bedplate 301; a detector 306 for detecting whether the forming die is placed in the jig in place is arranged in the forming die taking and placing area 3012; four positioning jigs 304 are arranged on the index plate 303; a supporting frame 305 for fixing the die clamping mechanism is arranged on the index plate 303; a suction positioning device 302 is arranged on the bedplate 301; a tight-suction positioning motor 309 is arranged below the tight-suction positioning device 302; the suction positioning motor 309 is connected with the suction positioning device 302.
Preferably, the detector 306 is a detection sensor.
In the present invention, in this process, the platen 301 is the installation reference platform for the entire set of mechanisms; a divider driven by a motor drives the index plate to rotate and position 180 degrees, so that switching of the forming die between a taking and placing area 3012 and an injection area 3011 is realized, and a detector 306 is arranged in the taking and placing area of the forming die and used for detecting whether the forming die is placed in the jig in place, namely whether the detector 306 can detect the positioning jig 304; the lower mold sucking and positioning device of the forming mold sucks and fixes the lower mold of the contact lens through vacuum.
As shown in fig. 5, the clamping mechanism 4 includes a servo motor 403, a lifting mechanism 401, a floating mechanism 402, a counterweight mechanism 404, and a smoke extraction mechanism; the lifting mechanism 401 is arranged at the lower end of the servo motor 403 and is connected with the servo motor 403; a floating mechanism 402 is arranged on the lifting mechanism 401; the floating mechanism 402 is bolted to the lifting mechanism 401.
The lower end of the floating mechanism 402 is provided with a counterweight mechanism 404; the counterweight mechanism 404 is in axial motion connection with the floating structure 402; specifically, a floating device (not labeled in the figure) is arranged inside the floating mechanism 402; the floatation device is connected with a counterweight motor shaft of the counterweight mechanism 404.
The lower end of the counterweight mechanism 404 is provided with a smoke extraction mechanism 405; the fume extraction mechanism 405 is composed of six forming die upper die vacuum chucks 407 and six weldments 406; the weldment 406 is disposed on one side of an upper mold vacuum cup 407 of the forming mold.
In this process, the servo motor 403 drives the lifting mechanism to move up and down: the initial position is above, after the contact lens forming mold is confirmed to be in place, the lifting mechanism descends, the upper mold of the contact lens forming mold is sucked in vacuum (the lower mold of the forming mold is sucked and positioned on the fixture of the turntable mechanism), and the lifting mechanism ascends to separate the upper mold and the lower mold of the forming mold; (the liquid mechanism of annotating annotates in the forming die lower mould) annotate the liquid and accomplish the back, elevating system descends, closes the compound die of forming die upper and lower mould to have floating machanism and counter weight mechanism to exert suitable pressure to upper and lower mould and guarantee the precision of upper and lower mould compound die, the pad mechanism fuses upper and lower mould into an organic whole simultaneously, smog extraction mechanism will melt the smog that produces and discharge during melting.
As shown in fig. 6, the liquid injection mechanism 5 includes a bottom plate 503; two moving devices which are used for moving the liquid injection device in front are arranged on the bottom plate 503; a fixing plate 502 for fixing the liquid injection device is arranged on the mobile device; a lifting mechanism support frame 506 is arranged on the fixing plate 502; a lifting device 507 is arranged on the lifting mechanism support frame 506; two sets of liquid injection devices are arranged at the end part of the lifting device 507.
Taking one set of liquid injection device as an example, the liquid injection device is composed of a liquid injection fixing seat 508, six quantitative liquid injection valves 509 and six liquid injection needles 510; the liquid injection fixing seat 508 is fixed on the lifting device 507 through bolts; the quantitative liquid injection valve 509 is arranged at the end part of the liquid injection fixing seat 508; the filling needle 510 is disposed on a constant-volume filling valve 509.
The moving device comprises a moving rod 505, two moving guide rails 504 and a moving slide block 501; the moving rod 505 is arranged between the two moving rails 504; the movable rod 505 is connected with the fixed plate 502; the moving slider 501 is arranged on the moving guide rail 504; the fixing plate 502 is disposed on the movable slider 501 and slidably connected with the movable slider 501.
In the process, after the upper die and the lower die of the contact lens forming die are separated, the moving device drives the liquid injection device to extend out, and each quantitative liquid injection valve is opposite to the lower die of the forming die; the lifting device 507 descends, and the liquid injection needle 510 is close to the bottom of the lower die; the quantitative valve is started, and the liquid high molecular polymer is injected into the lower die; and after the liquid injection is finished, the lifting device 507 retracts and resets the mobile device.
As shown in fig. 7, the finished product output mechanism 6 is composed of an output platen 601, an output turntable 602, a tray changing area 603, a finished product stacking area 606, a turntable correcting and locking mechanism 605, and a turntable correcting lock 604; the output turntable 602 and the turntable correcting and locking mechanism 605 are both arranged on the output bedplate 601; a rotating motor (not shown in the figure) is arranged below the output bedplate 601; the rotating motor is connected with the output turntable 602 and drives the output turntable 602 to rotate; two turntable correcting latches 604 are arranged on the output turntable 602; the turntable correcting lock 604 is connected with the turntable correcting locking mechanism 605 in a clamping manner.
In the process, in the material tray replacement area, an operator takes out the material tray full of finished products and puts in an empty material tray; the turntable correcting and locking mechanism 605 unlocks, the rotating motor drives the output turntable 602 to rotate 180 degrees, and the turntable correcting and locking mechanism 605 locks the turntable; the empty tray rotates to a finished product stacking area, the robot grabs a finished product of liquid injection and die assembly from the turntable mechanism, and the finished product is placed on the tray and stacked; after the finished products are stacked and placed in the full trays, the output turntable 602 rotates 180 degrees to send out the full trays of finished products, and the above processes are repeated.
The method for injecting and closing the mold by using the equipment comprises the following steps:
firstly, the forming molds are placed in the plastic trays, and the whole group of plastic trays filled with the forming molds flow into the conveying belt to the full tray taking-out position through the full tray.
And secondly, the robot grabs a full plate and places the full plate at the taking-out position of the forming die.
And thirdly, the robot picks the forming mould from the tray and places the forming mould on the turntable mechanism.
Fourthly, driving a motor to rotate to drive the indexing turntable to rotate and position by 180 degrees; completing the switching of the forming die in the liquid injection area of the pick-and-place area; when the detector detects the positioning jig, the suction positioning device sucks the lower mold of the glasses tightly and fixedly.
Fifthly, at the moment, the die closing mechanism rotates, and the servo motor drives the lifting mechanism to move up and down; after the contact lens forming mold is confirmed to be in place, the lifting mechanism descends, the upper mold of the contact lens forming mold is sucked in vacuum, and the lifting mechanism ascends to separate the upper mold from the lower mold of the forming mold.
And sixthly, injecting liquid by the liquid injection mechanism, after liquid injection is completed, descending the lifting mechanism, closing the upper die and the lower die of the forming die, applying proper pressure to the upper die and the lower die by the floating mechanism and the counterweight mechanism to ensure the closing precision of the upper die and the lower die, integrating the upper die and the lower die by fusion welding by the pad mechanism, and extracting and discharging smoke generated during fusion welding by the smoke extraction mechanism.
Seventhly, after the liquid injection and die assembly are completed, an operator takes out the material tray filled with the finished product and puts in an empty material tray; the turntable correcting and locking mechanism 605 unlocks, the rotating motor drives the output turntable 602 to rotate 180 degrees, and the turntable correcting and locking mechanism 605 locks the turntable; the empty tray rotates to a finished product stacking area, the robot grabs a finished product of liquid injection and die assembly from the turntable mechanism, and the finished product is placed on the tray and stacked; after the finished products are stacked and placed in the full trays, the output turntable 602 rotates 180 degrees to send out the full trays of finished products, and the above processes are repeated.
The invention is grabbed from a plastic tray by a robot, placed on a turntable mechanism, separated from an upper die and a lower die, quantitatively injected with liquid polymer materials in the lower die, and closed, pressed and welded by the upper die and the lower die; the robot then takes the contact lens forming mold out of the turntable mechanism and stacks it in a finished product tray.
The invention takes materials, separates, injects liquid, presses from the semi-finished product material, until the finished product is put out of the plate, adopt the full-automatic production mode and technological process, while reducing the cost of labor, the production efficiency is promoted obviously.
The invention solves the problems of large labor intensity and low production efficiency of the traditional contact lens manufacturing method which basically adopts a manual production mode by adopting automatic equipment and a method.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.
Claims (2)
1. The equipment for injecting and closing the liquid of the contact lens comprises a frame and a working cabinet; the working cabinet is arranged in the rack; the front end of the working cabinet is provided with a forming die conveying mechanism; the forming die conveying mechanism is fixed in the rack through bolts; the rear end of the forming die conveying mechanism is provided with a robot material taking and placing mechanism; the robot taking and placing mechanism is fixed in the rack through bolts; the working cabinet is arranged at the rear end of the robot material taking and placing mechanism; the working cabinet is provided with a turntable mechanism; the rotary table mechanism is fixed on the work cabinet through bolts; the rear end of the rotary table mechanism is provided with a die assembly mechanism; the clamping mechanism is fixed on the work cabinet through bolts; the rear end of the die assembly mechanism is provided with a liquid injection mechanism; the liquid injection mechanism is fixed on the work cabinet through bolts; a finished product output mechanism is arranged at the rear end of the liquid injection mechanism; the finished product output mechanism is fixed on the work cabinet through bolts; the method is characterized in that: the forming die conveying mechanism comprises a conveying rack; the conveying rack is fixed on the ground in the rack through bolts; a full-disc inflow conveying belt is arranged on the conveying rack; a full tray taking-out position is arranged behind the full tray flowing-in conveying belt; a full tray filled with materials is arranged at the full tray taking-out position; an empty tray output conveying belt is also arranged on the conveying rack; the front end of the empty tray output conveyer belt is provided with an empty tray placing position; an empty tray for taking out the materials is arranged at the empty tray placing position; a forming die taking-out rack is arranged behind the empty tray placing position; the forming die taking-out rack is provided with a forming die taking-out part; the lower end of the conveying rack is provided with two motors; one is an input motor and one is an output motor; the input motor is connected with the full-plate inflow conveying belt; the output motor is connected with the empty tray outflow conveying belt; a tray regulating mechanism for regulating the full trays is arranged at the side end of the full tray taking-out position; the robot taking and placing mechanism comprises a robot fixing base and a robot; the robot is arranged on the robot fixing base, and the bolt is fixed on the robot fixing base; the robot comprises a robot driving seat, a robot rotator, a robot arm, a robot gripper linkage arm, a robot gripper and a robot gripper clamp; the robot driving seat is arranged on the robot fixing base, and the bolt is fixed on the robot fixing base; the robot rotator is arranged on the robot driving seat; the robot rotator can rotate on the robot driving seat; a robot arm is arranged on the robot rotator; a robot gripper linkage arm is arranged on the robot arm; the robot gripper linkage arm is provided with a robot gripper; four tray suckers for sucking up the plastic tray are arranged on the robot gripper; two robot gripper clamps, a first robot gripper clamp and a second robot gripper clamp are arranged below the robot gripper; the first robot gripper clamp and the second robot gripper clamp are arranged in parallel; the turntable mechanism comprises a platen; the upper end of the bedplate is provided with an index plate; a divider is arranged at the lower end of the bedplate; the end part provided with the divider is provided with a driving motor; the driving motor is connected with the divider; the dividing disc is connected with the divider; a forming die taking and placing area and a liquid injection area are arranged on the bedplate; a detector for detecting whether the forming die is placed in the jig in place is arranged at the forming die taking and placing area; four positioning jigs are arranged on the dividing plate; the dividing plate is provided with a supporting frame for fixing the die closing mechanism; the bedplate is provided with a suction positioning device; a suction positioning motor is arranged below the suction positioning device; the sucking positioning motor is connected with the sucking positioning device; the die assembly mechanism comprises a servo motor, a lifting mechanism, a floating mechanism, a counterweight mechanism and a smoke extraction mechanism; the lifting mechanism is arranged at the lower end of the servo motor and is connected with the servo motor; the lifting mechanism is provided with a floating mechanism; the floating mechanism is fixed on the lifting mechanism through bolts; the lower end of the floating mechanism is provided with a counterweight mechanism; the counterweight mechanism is in axial motion connection with the floating structure; the lower end of the counterweight mechanism is provided with a smoke extraction mechanism; the smoke extraction mechanism consists of six forming die upper die vacuum chucks and six welding pieces; the welding part is arranged on one side of an upper die vacuum chuck of the forming die; the liquid injection mechanism comprises a bottom plate; two moving devices which are used for moving the liquid injection device in front are arranged on the bottom plate; the mobile device is provided with a fixing plate for fixing the liquid injection device; a lifting mechanism supporting frame is arranged on the fixing plate; the lifting mechanism supporting frame is provided with a lifting device; two sets of liquid injection devices are arranged at the end part of the lifting device; the finished product output mechanism consists of an output bedplate, an output turntable, a tray replacement area, a finished product stacking area, a turntable correcting and locking mechanism and a turntable correcting lock catch; the output turntable and the turntable correcting and locking mechanism are arranged on the output bedplate; a rotating motor is arranged below the output bedplate; the rotating motor is connected with the output turntable and drives the output turntable to rotate; two rotary plate correcting lock catches are arranged on the output rotary plate; the rotary disc reforming lock catch is connected with the rotary disc reforming locking mechanism in a clamping mode.
2. A method of injection molding a contact lens using the apparatus for injection molding a contact lens of claim 1, comprising the steps of:
firstly, placing the forming molds in a plastic tray, and enabling the whole group of plastic trays filled with the forming molds to flow into a conveying belt through a full tray to flow to a full tray taking-out position;
secondly, the robot grabs a full plate and places the full plate at the taking-out position of the forming die;
thirdly, the robot picks the forming mould from the tray and places the forming mould on the turntable mechanism;
fourthly, driving a motor to rotate to drive the indexing turntable to rotate and position by 180 degrees; completing the switching of the forming die in the liquid injection area of the pick-and-place area; when the detector detects the positioning jig, the suction positioning device sucks and fixes the lower mold of the glasses;
fifthly, at the moment, the die closing mechanism rotates, and the servo motor drives the lifting mechanism to move up and down; after confirming that the contact lens forming mold is in place, descending the lifting mechanism, sucking an upper mold of the contact lens forming mold through vacuum, and ascending the lifting mechanism to separate the upper mold and the lower mold of the forming mold;
the liquid injection mechanism performs liquid injection, after the liquid injection is completed, the lifting mechanism descends to close the upper die and the lower die of the forming die, a floating mechanism and a counterweight mechanism apply proper pressure to the upper die and the lower die to ensure the closing precision of the upper die and the lower die, meanwhile, the upper die and the lower die are welded into a whole by the pad mechanism, and smoke generated during the welding is extracted and exhausted by the smoke extraction mechanism;
seventhly, after the liquid injection and die assembly are completed, an operator takes out the material tray filled with the finished product and puts in an empty material tray; the turntable correcting and locking mechanism unlocks, the rotating motor drives the output turntable to rotate 180 degrees, and the turntable correcting and locking mechanism locks the turntable; the empty tray rotates to a finished product stacking area, the robot grabs a finished product of liquid injection and die assembly from the turntable mechanism, and the finished product is placed on the tray and stacked; after the finished products are stacked and placed in the full trays, the output rotary table rotates 180 degrees, the full trays of finished products are sent out, and the processes are circulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811273774.6A CN111113962B (en) | 2018-10-30 | 2018-10-30 | Equipment and method for liquid injection and mold closing of contact lenses |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811273774.6A CN111113962B (en) | 2018-10-30 | 2018-10-30 | Equipment and method for liquid injection and mold closing of contact lenses |
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| Publication Number | Publication Date |
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| CN111113962A CN111113962A (en) | 2020-05-08 |
| CN111113962B true CN111113962B (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811273774.6A Active CN111113962B (en) | 2018-10-30 | 2018-10-30 | Equipment and method for liquid injection and mold closing of contact lenses |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115071185A (en) * | 2022-06-06 | 2022-09-20 | 苏州茂特斯自动化设备有限公司 | Automatic die-closing welding device for contact lens forming die |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002087860A1 (en) * | 2001-05-02 | 2002-11-07 | Concepcionlicence Ag | Lens production line |
| KR20160135414A (en) * | 2015-05-18 | 2016-11-28 | (주)지오메디칼 | Auto Contact Lens Manufacturing Apparatus |
| GB2559167A (en) * | 2017-01-29 | 2018-08-01 | The Automated Tech Group Limited | End effector for a robot in a contact lens manufacturing process |
-
2018
- 2018-10-30 CN CN201811273774.6A patent/CN111113962B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002087860A1 (en) * | 2001-05-02 | 2002-11-07 | Concepcionlicence Ag | Lens production line |
| KR20160135414A (en) * | 2015-05-18 | 2016-11-28 | (주)지오메디칼 | Auto Contact Lens Manufacturing Apparatus |
| GB2559167A (en) * | 2017-01-29 | 2018-08-01 | The Automated Tech Group Limited | End effector for a robot in a contact lens manufacturing process |
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| Publication number | Publication date |
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| CN111113962A (en) | 2020-05-08 |
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