CN211030930U - Contact lens injection molding system mould loading attachment - Google Patents
Contact lens injection molding system mould loading attachment Download PDFInfo
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- CN211030930U CN211030930U CN201921614071.5U CN201921614071U CN211030930U CN 211030930 U CN211030930 U CN 211030930U CN 201921614071 U CN201921614071 U CN 201921614071U CN 211030930 U CN211030930 U CN 211030930U
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Abstract
The utility model relates to a contact lens injection molding system mould loading attachment. A contact lens injection molding system, comprising: vibration dish, the mould pay-off passageway that links to each other with vibration dish discharge channel still includes: a vibrating table positioned below the feeding channel of the die moves the feeding bar block; one end of the feeding strip block is distributed with N U-shaped grooves side by side, and the other end of the feeding strip block is provided with a blind section; the moving direction of the feeding bar block is vertical to the moving direction of the die before entering the feeding bar block, when the feeding bar block and the die are intersected, the die enters the U-shaped grooves of the movable feeding bar block one by one through the openings of the U-shaped grooves, and when the feeding bar block continues to move and the intersection reaches the blind section at the other end, the die is blocked outside the movable feeding bar block; the inductor is positioned above the crossed position of the two sensors; contact lens injection molding system mould loading attachment simple reliable, can increase substantially production efficiency, effectively reduced manpower and materials.
Description
The technical field is as follows:
the utility model relates to a contact lens preparation field, concretely relates to contact lens injection molding system mould loading attachment.
Background art:
with the rapid development of the times, the lives of people are more and more diversified, and the pursuit of beauty and fashion is more and more changed day by day. In recent years, the pursuit of contact lenses and cosmetic pupils by young women has been on the rise, thereby greatly promoting the vigorous development of the contact lens industry, and the production process of contact lenses is continuously updated. From the conventional turning molding process to the current centrifugal molding method and the current press molding method, each manufacturer selects a production process suitable for the manufacturer according to the requirement and the technical mastery level.
In the traditional turning molding process, turning and polishing are indispensable, but because the two processes exist, from the molding process to the demolding process, all the processes of the production flow of the contact lenses are separated from each other, so that the full-automatic production of the contact lenses cannot be realized, a large amount of human resources and equipment resources are consumed, and unqualified phenomena such as bright spots, threads, scratches, luminosity errors, thickness errors and the like easily appear on the produced lenses, so that the production efficiency and the quality of the contact lenses are influenced, and the comfort level of the lenses produced by the turning molding process is not ideal according to market feedback, and the lenses are not suitable for being used as short-period disposable lenses.
In order to solve the problems caused by the turning forming process, more advanced production processes are developed, such as: centrifugal molding, press molding, etc., and among them, press molding is widely used at present. The molding method is also called as a mold molding method, and the process flow is as follows: firstly, an upper die male die and a lower die female die with set parameters are manufactured by a die injection molding machine, then liquid lens materials are injected into the female die, the male die is embedded into the female die and is pressed tightly to form a die composition, then the die composition is heated or irradiated by ultraviolet rays to be cured, and finally, the die is released, so that the needed lens is obtained. The compression molding method has the advantages of high production efficiency, simple operation, controllable quality and low cost, and the lens produced by the method has soft texture and comfortable wearing, and is suitable for being used as a short-period disposable lens. Over the years, the shorter the rejection cycle and the more popular the consumer is, the more the contact lenses on the market are, which requires the manufacturers to have powerful lens production capacity, so that the advanced compression molding production process becomes the determining factor for the competition of the manufacturers.
However, the feeding system of the injection molding process of the existing compression molding method is not perfect, the probability of equipment failure is high, and particularly the feeding process of the molds, including the upper mold and the lower mold, is unstable, so that the smoothness of full-automatic flow line production of the contact lenses is influenced. Under the circumstances, a mold feeding device of a contact lens injection molding system, which has a perfect and reasonable feeding system structure and a low failure rate, is needed, so that the full-automatic flow line production of the contact lenses is ensured, and manpower and material resources are reduced.
The invention content is as follows:
an object of the utility model is to provide a full-automatic contact lens injection moulding system mould loading attachment aims at guaranteeing contact lens's full-automatic production. The specific technical scheme is as follows:
a contact lens injection molding system, comprising: the injection molding machine comprises an upper die 1, a lower die 2, a die base 3 and an injection molding head; the lower mould inlays on the mould base, and the head of moulding plastics pours into the lower mould with liquid molding raw materials into, goes up the mould and imbeds the lower mould again, and the space between last mould and the lower mould is filled by liquid molding raw materials, forms contact lens after the solidification.
Contact lens injection molding system mould loading attachment includes: vibration dish, the mould pay-off passageway that links to each other with vibration dish discharge channel still includes: a vibrating table positioned below the feeding channel of the die moves the feeding bar block 4; one end of the feeding strip block is distributed with N U-shaped grooves 41 side by side, and the other end is provided with a blind section 42; the moving direction of the feeding bar block is vertical to the moving direction of the die before entering the feeding bar block, when the feeding bar block and the die are intersected, the die enters the U-shaped grooves of the movable feeding bar block one by one through the openings of the U-shaped grooves, and when the feeding bar block continues to move and the intersection reaches the blind section at the other end, the die is blocked outside the movable feeding bar block; a sensor 97 is located above the intersection of the two, and the control section of the system stops the feeding of the die feeder when it detects that there is no free U-groove at the intersection.
One of the preferable modes of the above-mentioned scheme further comprises: and the blowing pipe is positioned at the outlet of the die feeding channel and used for blowing off dust on the working part of the surface of the die.
One of the preferable modes of the above-mentioned scheme further comprises: and when the inductor senses that no idle U-shaped groove exists, the retractable thimble 98 is lifted, so that the die is prevented from continuously flowing into the feeding channel.
The utility model discloses for prior art's advantage lie in: contact lens injection molding system mould loading attachment simple reliable, can increase substantially production efficiency, effectively reduced manpower and materials.
Description of the drawings:
fig. 1 is an assembly schematic diagram of an upper die and a lower die after liquid is injected in the embodiment of the present invention. In the drawing, 1 denotes an upper die, and 2 denotes a lower die.
Fig. 2 is a schematic view of the upper mold of fig. 1, with 11 representing the lower spherical working portion and 12 representing the upper head clamping portion.
Fig. 3 is a schematic structural view of the lower mold in fig. 1, and 22 represents an external convex spherical shell.
Fig. 4 is a top view of fig. 3, where 21 represents the inner concave spherical working portion and 23 represents the upper outer edge.
Fig. 5 is a schematic structural view of an upper part of the rotary table in the embodiment, wherein 5 denotes the rotary table and 6 denotes the die base row.
Fig. 6 is a schematic view of the structure of the rows of mould bases, where 3 denotes the mould bases, the number of which side by side is determined by the actual need, only 5 being listed.
Fig. 7 is a left side view of fig. 6, in which 31 denotes a middle cylindrical cavity.
Fig. 8 is a top view of fig. 6, where 32 represents an upper boss.
Fig. 9 is a schematic structural diagram of a moving feed bar block in the embodiment, wherein 41 represents a U-shaped groove, and 42 represents a blind section.
Fig. 10 is a top view of fig. 9.
FIG. 11 is a schematic view of an upper mold oscillating plate of an upper mold loading device of the contact lens injection molding system in accordance with the exemplary embodiment, wherein 8 represents the upper mold oscillating plate, 81 represents the second oscillating table, and 82 represents the second tapered surface.
FIG. 12 is a top view of FIG. 11, where 82 represents a second tapered surface, 83 represents a tapered edge, 84 represents an upper die feed channel, and 4 represents a feed bar block interfacing with the upper die feed channel.
Fig. 13 is a schematic structural view of a lower die vibration plate in the embodiment, wherein 7 represents the lower die vibration plate, 71 represents the first vibration table, 72 represents the first tapered surface, and 73 represents the spiral discharge passage.
Fig. 14 is a top view of fig. 13, where 72 represents a first tapered surface, 73 represents a helical feed channel, 74 represents a lower die feed channel, and 4 represents a feed bar block interfacing with the lower die feed channel.
Fig. 15 is a schematic top view of the structure of the turnover device in the embodiment, in which 4 represents a feeding bar block, 91 represents a first end support, 92 represents a second end support, 93 represents a turnover shaft, 94 represents a clamping force application mechanism, 95 represents a first clamping member, and 96 represents a second clamping member.
Fig. 16 is a schematic rear view of the structure of the turning device in the embodiment, in which 4 denotes a feed bar block, 91 denotes a first end support, 93 denotes a turning shaft, 95 denotes a first holding member, and 96 denotes a second holding member.
Fig. 17 is a schematic structural diagram of an inductor and a thimble in the embodiment, in which 1 represents an upper mold, 97 represents an inductor, and 98 represents a thimble.
The specific implementation mode is as follows:
example (b):
the specific embodiment of the present invention will be described with reference to fig. 1 to 17.
Introduction of an application scene: a contact lens injection molding system, comprising: the injection molding machine comprises an upper die 1, a lower die 2, a die base 3 and an injection molding head; the lower die is embedded on the die base, the liquid molding raw material is injected into the lower die by the injection head, the upper die is embedded into the lower die, a gap between the upper die and the lower die is filled with the liquid molding raw material, and the liquid molding raw material is solidified to form the contact lens; the upper die comprises two parts, namely: a lower spherical working portion 11, an upper head-holding portion 12; the lower die comprises three parts, namely: an inner concave spherical working part 21, an outer convex spherical shell 22 and an upper outer rim 23;
in view of the protection of the working surface of the upper die or the lower die, the lower die is placed on the lower die feeding device in a state that the outer convex spherical shell is in contact with the supporting surface; the upper die is placed on the upper die feeding device in a state that the upper clamping part faces downwards, and the lower spherical working part faces upwards; this also has the advantage that the upper and lower moulds can be cleaned finally by providing the blow pipes.
The rotary workbench 5 is a main platform for injection molding, a mold base row 6 is arranged on the rotary workbench, and a lower mold manipulator, a liquid injection manipulator, an upper mold manipulator and a mold stripping manipulator are sequentially distributed according to the rotation direction of the rotary workbench;
the base is arranged to the mould includes 10 mould bases 3 that parallel, and the mould base includes: the middle cylindrical cavity 31 and the upper boss 32 are uniformly distributed on the rotating workbench of the base of the die row, and the base of the die row is moved to the next adjacent station when the die row rotates once;
the lower mould manipulator shifts the lower mould from removing pay-off strip piece to the mould base on the swivel work head and arranges, swivel work head rotates once back, annotates the liquid manipulator and aims at a set of lower mould that the mould base was arranged with a set of notes liquid head and annotate the liquid, the swivel work head continues to rotate once back, go up the mould manipulator and put into corresponding and annotate the lower mould that the liquid was accomplished in a set of mould, the swivel work head continues to rotate once more after, go out mould manipulator and remove out the swivel work head with last mould and lower mould that the mould base was arranged and accomplish an automatic process of moulding plastics in the lump.
Of particular note are: the lower die manipulator and the upper die manipulator can not accurately grab the upper die or the lower die from a disordered upper die tray or a disordered lower die tray, and the placing state and the working state of the upper die are opposite and can not be directly grabbed, so that a set of die feeding device of the contact lens injection molding system needs to be designed. The loading device is described below with respect to the upper and lower dies, respectively.
Mould loading attachment on contact lens injection moulding system, go up the mould and include two parts, promptly: a lower spherical working portion 11, an upper head-holding portion 12; go up mould loading attachment includes: the upper die vibration disc is an upper die feeding channel 84 connected with the upper die vibration disc discharging channel, the upper die is placed on the upper die vibration disc and the upper die feeding channel in a state that the upper clamping part faces downwards, and the lower spherical surface working part faces upwards; it is characterized by also comprising: a fourth vibrating table positioned below the upper die feeding channel, a movable feeding bar block 4, a turnover workbench, an upper die blowing pipe positioned at the outlet position of the upper die feeding channel, and a telescopic ejector pin 98 positioned at the tail end of the upper die feeding channel;
one end of the feeding strip block is distributed with N U-shaped grooves 41 side by side, and the other end is provided with a blind section 42;
the moving direction of the upper die feeding channel is vertical to the moving direction of the movable feeding strip block, the upper dies enter the U-shaped grooves of the movable feeding strip block one by one through the openings of the U-shaped grooves, and when the feeding strip block continues to move and the intersection point reaches the blind section at the other end, the die is blocked outside the movable feeding strip block;
an inductor 97 is arranged above the intersection point, when the inductor detects that no idle U-shaped groove exists at the intersection position, the control part of the system stops feeding of the upper die vibration disc and stops working of the fourth vibration table;
go up mould vibration dish includes: a second vibration table 81, a second conical surface 82 on the second vibration table, and an upper die feed channel 84 tangent to the conical surface edge 83 of the second vibration disc;
the turnover table comprises: a first end support 91, a second end support 92, a turning shaft 93 positioned between the two, a first clamping member 95, a second clamping member 96 and a clamping force application mechanism 94, wherein the first clamping member 95 and the second clamping member 96 are respectively fixedly connected with the turning shaft; the first clamping part and the second clamping part can reach the upper part of the feeding strip block under the driving of the turnover shaft, clamp the upper die under the action of the clamping force application mechanism, turn over for 180 degrees and then connect with the next procedure;
the air blowing pipe is used for blowing off dust on the working part of the spherical surface of the upper die;
when the inductor senses that no idle U-shaped groove exists, the telescopic ejector pin rises, and the upper die is prevented from continuously flowing into the feeding channel.
Contact lens injection moulding system lower mould loading attachment includes: the lower die vibration disc is a lower die feeding channel 74 connected with the spiral discharging channel 73 of the lower die vibration disc, and the lower die is placed on the lower die vibration disc and the lower die feeding channel in a state that the outer convex spherical shell is contacted with the supporting surface; further comprising: a third vibrating table positioned below the lower die feeding channel, a movable feeding strip block 4, a lower die blowing pipe positioned at the outlet position of the lower die feeding channel, and a telescopic thimble 98 positioned at the tail end of the lower die feeding channel;
one end of the feeding strip block is distributed with N U-shaped grooves 41 side by side, and the other end is provided with a blind section 42;
the moving direction of a feeding channel of the lower die is vertical to the moving direction of the movable feeding strip block, the lower die enters the U-shaped grooves of the movable feeding strip block one by one through the openings of the U-shaped grooves, and when the feeding strip block continues to move and the intersection point reaches the blind section at the other end, the die is blocked outside the movable feeding strip block;
an inductor 97 is arranged above the intersection point, when the inductor detects that no idle U-shaped groove exists at the intersection position, the control part of the system stops feeding of the lower die vibration disc and stops the third vibration table;
the lower die vibration plate comprises: a first vibrating table 71, a first conical surface 72 on the vibrating table, and a spiral discharging channel 73 tangent to the outer edge of the first conical surface;
the air blowing pipe is used for blowing off dust on the working part of the concave spherical surface inside;
when the inductor senses that no idle U-shaped groove exists, the telescopic ejector pin rises, and the lower die is prevented from continuously flowing into the feeding channel.
Claims (9)
1. Contact lens injection molding system mould loading attachment includes: vibration dish, the mould pay-off passageway that links to each other with vibration dish discharge channel, its characterized in that still includes: a vibrating table positioned below the feeding channel of the die moves the feeding bar block (4); one end of the feeding strip block is distributed with N U-shaped grooves (41) side by side, and the other end is provided with a blind section (42); the moving direction of the feeding bar block is vertical to the moving direction of the die before entering the feeding bar block, when the feeding bar block and the die are intersected, the die enters the U-shaped grooves of the movable feeding bar block one by one through the openings of the U-shaped grooves, and when the feeding bar block continues to move and the intersection reaches the blind section at the other end, the die is blocked outside the movable feeding bar block; and a sensor (97) positioned above the intersection of the two, wherein when the intersection is detected to have no free U-shaped groove, the control part of the system stops the feeding of the mould feeding device.
2. The contact lens injection molding system mold loading apparatus of claim 1, further comprising: and the blowing pipe is positioned at the outlet of the die feeding channel and used for blowing off dust on the working part of the surface of the die.
3. The contact lens injection molding system mold loading apparatus of claim 1 or 2, further comprising: and when the inductor senses that no idle U-shaped groove exists, the retractable thimble (98) is lifted, so that the die is prevented from continuously flowing into the feeding channel.
4. Mould loading attachment on contact lens injection moulding system, go up the mould and include two parts, promptly: a lower spherical working part (11), an upper head clamping part (12); go up mould loading attachment includes: the upper die vibration disc is connected with an upper die feeding channel (84), the upper die is placed on the upper die vibration disc and the upper die feeding channel in a state that the upper clamping part faces downwards, and the lower spherical surface working part faces upwards; it is characterized by also comprising: a fourth vibrating table positioned below the feeding channel of the upper die, a movable feeding bar block (4) and a turnover workbench;
one end of the feeding strip block is distributed with N U-shaped grooves (41) side by side, and the other end is provided with a blind section (42);
the moving direction of the upper die feeding channel is vertical to the moving direction of the movable feeding strip block, the upper dies enter the U-shaped grooves of the movable feeding strip block one by one through the openings of the U-shaped grooves, and when the feeding strip block continues to move and the intersection point reaches the blind section at the other end, the die is blocked outside the movable feeding strip block;
an inductor (97) is arranged above the intersection point, when the inductor detects that no idle U-shaped groove exists at the intersection position, the control part of the system stops feeding of the upper die vibration disc and stops working of the fourth vibration table;
go up mould vibration dish includes: the second vibrating table (81), a second conical surface (82) on the second vibrating table, and an upper die feeding channel (84) tangent to the conical surface edge (83) of the second vibrating disc;
the turnover table comprises: a first end support (91), a second end support (92), a turning shaft (93) positioned between the first end support and the second end support, a first clamping component (95), a second clamping component (96) and a clamping force application mechanism (94), wherein the first clamping component and the second clamping component are respectively fixedly connected with the turning shaft; the first clamping part and the second clamping part can reach the upper part of the feeding strip block under the driving of the turnover shaft, the upper die is clamped under the action of the clamping force application mechanism, then the upper die is turned over for 180 degrees, and then the next procedure is connected.
5. The contact lens injection molding system top mold loading apparatus of claim 4, further comprising: and the upper die air blowing pipe is positioned at the outlet of the upper die feeding channel and is used for blowing off dust on the working part of the spherical surface of the upper die.
6. An upper mold loading device for a contact lens injection molding system according to claim 4 or 5, further comprising: and when the inductor senses that no idle U-shaped groove exists, the telescopic ejector pin (98) is lifted, so that the upper die is prevented from continuously flowing into the feeding channel.
7. A lower mold loading apparatus for a contact lens injection molding system, the lower mold comprising three parts: an inner concave spherical working part (21), an outer convex spherical shell (22) and an upper outer edge (23); lower mould loading attachment includes: the lower die vibration disc is a lower die feeding channel (74) connected with a spiral discharging channel (73) of the lower die vibration disc, and the lower die is placed on the lower die vibration disc and the lower die feeding channel in a state that the outer convex spherical shell is contacted with the supporting surface; it is characterized by also comprising: a third vibrating table positioned below the feeding channel of the lower die moves the feeding bar block (4);
one end of the feeding strip block is distributed with N U-shaped grooves (41) side by side, and the other end is provided with a blind section (42);
the moving direction of a feeding channel of the lower die is vertical to the moving direction of the movable feeding strip block, the lower die enters the U-shaped grooves of the movable feeding strip block one by one through the openings of the U-shaped grooves, and when the feeding strip block continues to move and the intersection point reaches the blind section at the other end, the die is blocked outside the movable feeding strip block;
an inductor (97) is arranged above the intersection point, and when the inductor detects that no idle U-shaped groove is formed in the intersection position, the control part of the system stops feeding of the lower die vibration disc and stops the third vibration table;
the lower die vibration plate comprises: the device comprises a first vibrating table (71), a first conical surface (72) on the vibrating table, and a spiral discharging channel (73) tangent to the outer edge of the first conical surface.
8. The contact lens injection molding system lower mold loading apparatus of claim 7, further comprising: and the lower die air blowing pipe is positioned at the outlet of the lower die feeding channel and is used for blowing off dust on the working part of the inner concave spherical surface.
9. A lower mold loading apparatus for a contact lens injection molding system according to claim 7 or 8, further comprising: and when the inductor senses that no idle U-shaped groove exists, the telescopic ejector pin (98) is lifted, so that the lower die is prevented from continuously flowing into the feeding channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921614071.5U CN211030930U (en) | 2019-09-26 | 2019-09-26 | Contact lens injection molding system mould loading attachment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921614071.5U CN211030930U (en) | 2019-09-26 | 2019-09-26 | Contact lens injection molding system mould loading attachment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211030930U true CN211030930U (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921614071.5U Active CN211030930U (en) | 2019-09-26 | 2019-09-26 | Contact lens injection molding system mould loading attachment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211030930U (en) |
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2019
- 2019-09-26 CN CN201921614071.5U patent/CN211030930U/en active Active
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