A demoulding device

Abstract

The present application relates to a demoulding device, which is used in the field of contact lens demoulding, and includes a placing rack, on which a demoulding device for demoulding upper and lower molds is provided, a feeding device for conveying the upper and lower molds to the demoulding device is provided at the feeding end of the demoulding device, and an adsorption device for collecting the upper mold after demoulding is provided on the placing rack, and the adsorption device includes a mounting rack arranged on the placing rack, on which a suction port is provided, and one side of the placing rack is provided with an air suction device, and the exhaust pipe of the air suction device is connected to the suction port. The technical effect of the present application is as follows: a number of undemolded upper and lower molds are conveyed to the demoulding device along the feeding device, the demoulding device is started to continuously demould the number of upper and lower molds, the air suction device is started, the exhaust pipe of the air suction device is connected to the suction port, the upper mold after demoulding is collected and processed, and the upper and lower molds are continuously demoulded by using the demoulding device, which shortens the demoulding time required for demoulding the upper and lower molds and improves production efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of contact lens demoulding, and in particular to a demoulding device. Background Art

[0002] Contact lenses, also called contact lenses, are lenses that are worn on the cornea of ​​the eye to correct vision or protect the eyes.

[0003] Reference Figure 1 In the manufacturing process of contact lenses, upper and lower molds 22 are used as consumables. The color is transferred through the lower mold 24. After the color is transferred, liquid is injected between the upper mold 23 and the lower mold 24, and the liquid solidifies to form the contact lenses. The upper and lower molds 22 include an upper mold 23 and a lower mold 24. The outer edge of the upper mold 23 is fixedly connected with an annular step. After the contact lenses are formed, the upper mold 23 and the lower mold 24 need to be separated, and the upper mold 23 is removed to achieve demolding, so as to facilitate the subsequent process of removing the contact lenses. The existing contact lens upper and lower molds 22 demolding use cylinders to press the upper mold 23 one by one, so that the upper mold 23 is deformed and then the upper mold 23 and the lower mold 24 are separated to achieve demolding.

[0004] In the above-mentioned demoulding method using a cylinder, the cylinder needs to press the upper mold one by one, the mechanical cycle is slow, and the deformation of the upper mold pressed by the cylinder is difficult to accurately control, and there is a possibility of demoulding failure, resulting in low demoulding efficiency and affecting production efficiency. Summary of the invention

[0005] In order to help solve the problem of low production efficiency caused by the cylinder demolding method in the prior art, which has slow mechanical rhythm and demolding failure, the present application provides a demolding device, which adopts the following technical scheme: it includes a placing rack, the placing rack is provided with a demolding device for demolding the upper and lower molds, the feeding end of the demolding device is provided with a loading device for conveying the upper and lower molds to the demolding device, the placing rack is provided with an adsorption device for collecting the upper mold after demolding, the adsorption device includes a mounting rack arranged on the placing rack, the mounting rack is provided with a suction port, and a suction device is provided on one side of the placing rack, and the exhaust pipe of the suction device is connected to the suction port.

[0006] Through the above technical scheme, when it is necessary to demold the upper and lower molds of the contact lens, a number of upper and lower molds that have not been demolded are transported to the demolding device along the feeding device, the demolding device is started to continuously demold the several upper and lower molds, and the suction equipment is started. The exhaust pipe of the suction equipment is connected to the suction port, and the demolded upper molds are collected and processed. The demolding device is used to continuously demold the upper and lower molds, which shortens the demolding time required for demolding the upper and lower molds and improves production efficiency. The upper mold consumables after demolding are centrally collected and processed by the suction equipment, which improves the cleanliness of the production space.

[0007] In a specific possible implementation scheme, the demolding device includes a turntable rotatably connected to a placement rack, the upper and lower molds are placed on the turntable, the placement rack is provided with a driving unit for driving the turntable to rotate, the placement rack is provided with a limiting ring, the turntable is arranged on the inner edge of the limiting ring, the limiting ring is provided with a demolding unit for demolding the upper mold, and the turntable is provided with a limiting unit for limiting the position of the lower mold.

[0008] Through the above technical solution, the driving unit is started to drive the turntable to rotate, and the upper and lower molds are sequentially located between the turntable and the limit ring, thereby driving the upper and lower molds to be transported, and the limit unit is used to fix the lower mold position of the upper and lower molds, and the demoulding unit is used to demould the upper mold of the upper and lower molds, so that the upper mold and the lower mold are separated and demoulded. The demoulding unit and the limit unit are used to continuously demould the upper and lower molds, which shortens the demoulding time required for demoulding the upper and lower molds and improves production efficiency.

[0009] In a specific feasible implementation scheme, the demolding unit includes a first track plate arranged on a limiting ring, a second track plate is arranged on the surface of the mounting frame facing the placing frame, a first inclined groove matching the rotation trajectory of the turntable is arranged on the first track plate, a second inclined groove matching the rotation trajectory of the turntable is arranged on the second track plate, and the steps of the upper mold are respectively arranged on the bottom of the first inclined groove and the second inclined groove.

[0010] Through the above technical solution, the turntable drives the upper and lower molds to be transported between the limit ring and the limit unit. When the un-demolded upper and lower molds are transported between the first track plate and the second track plate, the step of the upper mold is set on the bottom of the first inclined groove and the second inclined groove. At this time, the upper and lower molds continue to be transported along the rotating track of the turntable. Since the first inclined groove and the second inclined groove are inclined, a force is applied to the step of the upper mold during the upper and lower mold transportation process to pull the upper mold out of the upper and lower molds, thereby realizing the separation of the upper and lower molds. The demoulding unit can demould multiple upper and lower molds at the same time without waiting for the mechanical beat, thereby improving the demoulding efficiency.

[0011] In a specific possible implementation mode, the limiting unit includes a gear ring arranged on a turntable, the lower mold is located between the gear ring and the limiting ring, and the lower mold is in contact with the inner edge of the limiting ring and the outer edge of the gear ring respectively.

[0012] Through the above technical solution, when the demolding unit performs demolding operation on the upper mold, the lower mold contacts the inner edge of the limiting ring and the outer edge of the gear ring respectively, and the gear ring and the limiting ring play a limiting role on the lower mold, thereby improving the stability of the demolding process of the upper and lower molds.

[0013] In a specific possible implementation manner, the driving unit includes a driving motor disposed on a placement rack, and the turntable is disposed at an output end of the driving motor.

[0014] Through the above technical solution, the drive motor is started to drive the turntable at the output end of the drive motor to rotate, thereby realizing continuous transportation of the upper and lower molds placed on the turntable without waiting for the mechanical beat, thereby improving production efficiency.

[0015] In a specific possible implementation scheme, the discharge end of the demoulding unit is provided with a degumming unit for degumming the lower mold, and the degumming unit includes a degumming ring arranged on a limiting ring, and the inner edge of the degumming ring is provided with a plurality of scraping teeth, and the lower mold is located between the gear ring and the plurality of scraping teeth.

[0016] Through the above technical solution, the rotation of the turntable drives the lower mold to move after demolding. During the conveying process, the outer edge of the lower mold contacts the scraper teeth on the glue removal ring. The scraper teeth scrape off the possible overflow glue on the outer edge of the lower mold, thereby reducing the interference of possible overflow glue on the lower mold on subsequent processes and improving product quality.

[0017] In a specific possible implementation manner, a material receiving tray is provided on the placement rack, and the material receiving tray is arranged at the discharge end of the glue removal ring.

[0018] Through the above technical solution, the collecting tray collects the lower molds after demolding, which can reduce the direct contact between the operator and the lower molds after demolding, improve production efficiency, and effectively prevent the lower molds from being scattered or lost during the discharge process, thereby keeping the production environment clean and orderly.

[0019] In a specific feasible implementation scheme, a guide seat is provided on the placement rack, a first guide block and a second guide block are provided on the guide seat, a guide track is formed between the first guide block and the second guide block, the guide track is located between the discharge end of the degumming ring and the feed end of the receiving tray, and the lower mold is transported to the receiving tray along the guide track.

[0020] Through the above technical solution, the guide track between the first guide block and the second guide block guides the demolded lower mold, and the demolded lower molds can only be transported to the feeding end of the receiving tray along the guide track, ensuring that the lower mold maintains a stable posture and state during the transportation process, avoiding damage or deformation of the contact lenses due to vibration or collision, and ensuring the quality of the contact lenses in the lower mold. Guided by the guide track, the demolded lower mold can enter the receiving tray more smoothly, reducing the blocking time caused by the disordered movement of the lower mold, thereby improving the efficiency of transportation when the lower mold is unloaded.

[0021] In a specific embodiment, the receiving tray is made of stainless steel.

[0022] Through the above technical solution, the surface of the stainless steel material is smooth and the friction is small, which reduces the possibility of jamming during the movement of the lower mold, so that the lower mold after demoulding can smoothly fall into the receiving tray for collection.

[0023] In a specific possible implementation mode, the feeding device comprises a vibration plate arranged on a placement frame, a plurality of upper and lower molds are located in the vibration plate, and a discharge end of the vibration plate corresponds to a feed end of the demoulding device.

[0024] Through the above technical solution, the vibration plate can automatically sort the upper and lower molds that have not been demolded and accurately transport them to the demolding device, replacing cumbersome manual sorting, reducing the time and cost of manual operation, speeding up production and improving production efficiency.

[0025] To sum up, the present application has at least the following beneficial technical effects: when it is necessary to demold the upper and lower molds of the contact lens, several upper and lower molds that have not been demolded are transported to the demolding device along the feeding device, the demolding device is started to continuously demold several upper and lower molds, the suction equipment is started, the exhaust pipe of the suction equipment is connected to the suction port, the demolded upper mold is collected and processed, and the demolding device is used to continuously demold the upper and lower molds, which shortens the demolding time required for demolding the upper and lower molds and improves production efficiency. The suction equipment is used to centrally collect and process the upper mold consumables after demolding, thereby improving the cleanliness of the production space. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of upper and lower molds for contact lenses in the related art.

[0027] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0028] Figure 3 It is a structural schematic diagram used to reflect the demoulding unit in the embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the structure of the turntable in the embodiment of the present application.

[0030] Figure numerals: 1. placement rack; 2. demoulding device; 3. loading device; 4. adsorption device; 5. mounting rack; 6. exhaust pipe; 7. turntable; 8. limit ring; 9. first track plate; 10. second track plate; 11. first inclined groove; 12. second inclined groove; 13. gear ring; 14. driving motor; 15. glue removal ring; 16. glue scraping teeth; 17. collecting tray; 18. guide seat; 19. first guide block; 20. second guide block; 21. vibration disk; 22. upper and lower molds; 23. upper mold; 24. lower mold; 25. suction equipment. DETAILED DESCRIPTION

[0031] The following is combined with Figure 2-4 This application is described in further detail.

[0032] The embodiment of the present application discloses a demoulding device.

[0033] Reference Figure 2 and Figure 3 The demoulding device 2 includes a placing rack 1, on which the demoulding device 2 for demoulding the upper and lower molds 22 is arranged, and a feeding device 3 for conveying the upper and lower molds 22 to the demoulding device 2 is arranged at the feeding end of the demoulding device 2. The feeding device 3 includes a vibration plate 21 arranged on the placing rack 1, and a plurality of undemolded upper and lower molds 22 are located in the vibration plate 21. The discharge end of the vibration plate 21 corresponds to the feeding end of the demoulding device 2. The vibration plate 21 can automatically sort the undemolded upper and lower molds 22 and accurately convey them to the demoulding device 2, replacing cumbersome manual sorting, reducing the time and cost of manual operation, speeding up production, and improving production efficiency.

[0034] Reference Figure 2 and Figure 3 The placement rack 1 is provided with an adsorption device 4 for collecting the upper mold 23 after demolding. The adsorption device 4 includes a mounting rack 5 installed on the placement rack 1. The mounting rack 5 is provided with a suction port. A suction device 25 is placed on one side of the placement rack 1. The exhaust pipe 6 of the suction device 25 is connected to the suction port. The suction device 25 in the embodiment of the present application can adopt a dust collector, specifically a pulse coated filter element dust collector. The suction device 25 is used to centrally collect and process the consumables of the upper mold 23 after demolding, thereby improving the cleanliness of the production space while improving the production efficiency.

[0035] Reference Figure 3 and Figure 4 The demoulding device 2 includes a turntable 7 rotatably connected to the placement frame 1, and the upper and lower molds 22 are placed on the turntable 7. The placement frame 1 is provided with a driving unit for driving the turntable 7 to rotate. The driving unit includes a driving motor 14 provided on the placement frame 1, and the turntable 7 is provided at the output end of the driving motor 14. Therefore, when the driving motor 14 is started, the turntable 7 at the output end of the driving motor 14 is driven to rotate clockwise, thereby realizing continuous conveyance of the upper and lower molds 22 placed on the turntable 7, without waiting for the mechanical beat, thereby improving production efficiency.

[0036] Reference Figure 3 and Figure 4, the placement frame 1 is bolted with a limit ring 8, and in the embodiment of the present application, a notch is provided on the limit ring 8, the turntable 7 is arranged at the inner edge of the limit ring 8 and the turntable 7 is arranged concentrically with the limit ring 8, the limit ring 8 is provided with a demoulding unit for demoulding the upper mold 23, and the turntable 7 is provided with a limit unit for limiting the position of the lower mold 24. The demoulding unit includes an arc-shaped first track plate 9 bolted to the limit ring 8, and the mounting frame 5 is bolted with an arc-shaped second track plate 10 on the surface facing the placement frame 1, the first track plate 9 is provided with a first inclined groove 11 matching the rotation track of the turntable 7, and the second track plate 10 is provided with a second inclined groove 12 matching the rotation track of the turntable 7, and the steps of the upper mold 23 are respectively arranged on the bottom of the first inclined groove 11 and the second inclined groove 12. The suction port on the mounting frame 5 is located directly above the first track plate 9 and the second track plate 10, so as to facilitate the timely adsorption of the consumables of the upper mold 23 after demoulding.

[0037] Therefore, the turntable 7 drives the upper and lower molds 22 to be transported between the limit ring 8 and the limit unit. When the undemolded upper and lower molds 22 are transported between the first track plate 9 and the second track plate 10, the step of the upper mold 23 is set on the bottom of the first inclined groove 11 and the second inclined groove 12. At this time, the upper and lower molds 22 continue to be transported along the rotation track of the turntable 7. Since the first inclined groove 11 and the second inclined groove 12 are inclined, during the transportation of the upper and lower molds 22, a force will be applied to the step of the upper mold 23 to pull the upper mold 23 out of the upper and lower molds 22, thereby realizing the separation of the upper and lower molds 22. The demoulding unit can demould multiple upper and lower molds 22 at the same time without waiting for the mechanical beat, thereby improving the demoulding efficiency.

[0038] Reference Figure 3 and Figure 4 The limiting unit includes a gear ring 13 bolted to the turntable 7. When the turntable 7 rotates under the drive of the driving motor 14, the gear ring 13 rotates synchronously with the turntable 7. The lower mold 24 is located between the gear ring 13 and the limiting ring 8, and the lower mold 24 contacts the inner edge of the limiting ring 8 and the outer edge of the gear ring 13 respectively. Therefore, when the demoulding unit demoulds the upper mold 23, the lower mold 24 is pressed between the inner edge of the limiting ring 8 and the outer edge of the gear ring 13. The gear ring 13 and the limiting ring 8 limit the lower mold 24, which facilitates the upper mold 23 to be separated from the lower mold 24 by force, and improves the stability of the demoulding process of the upper and lower molds 22.

[0039] Reference Figure 3 and Figure 4The discharge end of the demoulding unit is provided with a degumming unit for degumming the lower mold 24. The degumming unit includes a degumming ring 15 bolted to the limit ring 8. In the embodiment of the present application, the degumming ring 15 is concentrically arranged with the limit ring 8 and a notch is arranged on the degumming ring 15. The inner edge of the degumming ring 15 is fixedly connected with a plurality of scraping teeth 16. The lower mold 24 is located between the gear ring 13 and the plurality of scraping teeth 16. Therefore, the rotation of the turntable 7 drives the lower mold 24 to move after demoulding. During the conveying process, the outer edge of the lower mold 24 contacts the scraping teeth 16 on the degumming ring 15. The scraping teeth 16 scrape off the possible overflow glue on the outer edge of the lower mold 24, thereby reducing the interference of the possible overflow glue on the lower mold 24 with the subsequent processes and improving the product quality.

[0040] Reference Figure 3 and Figure 4 A receiving tray 17 is bolted to the placement rack 1, and the receiving tray 17 is arranged at the discharge end of the de-glue ring 15. In the embodiment of the present application, the receiving tray 17 is made of stainless steel and the surface of the receiving tray 17 is mirror-finished, thereby ensuring the smoothness of the surface of the receiving tray 17, with low friction, reducing the possibility of jamming during the movement of the lower mold 24, and allowing the lower mold 24 after demolding to fall smoothly into the receiving tray 17 for collection.

[0041] Therefore, the collecting tray 17 collects the demolded lower molds 24 in a centralized manner, which can reduce the direct contact between the operator and the demolded lower molds 24, improve production efficiency, and effectively prevent the lower molds 24 from being scattered or lost during the discharging process, thereby keeping the production environment clean and orderly.

[0042] Reference Figure 3 and Figure 4 A guide seat 18 is bolted to the placement frame 1, and an arc-shaped first guide block 19 and an arc-shaped second guide block 20 are bolted to the guide seat 18. An arc-shaped guide track is formed between the first guide block 19 and the second guide block 20. The guide track is located between the discharge end of the degumming ring 15 and the feed end of the receiving tray 17, and the lower mold 24 is transported to the receiving tray 17 along the guide track.

[0043] Therefore, the guide track between the first guide block 19 and the second guide block 20 guides the demolded lower mold 24. The demolded lower molds 24 can only be transported to the feeding end of the receiving tray 17 along the guide track, ensuring that the lower mold 24 maintains a stable posture and state during the transportation process, avoiding damage or deformation of the contact lenses in the lower mold 24 due to vibration or collision, and ensuring the quality of the contact lenses in the lower mold 24. Guided by the guide track, the demolded lower mold 24 can enter the receiving tray 17 more smoothly, reducing the blocking time caused by the disordered movement of the lower mold 24, thereby improving the transportation efficiency of the lower mold 24 when unloading.

[0044] The implementation principle of the embodiment of the present application is as follows: a number of un-demolded upper and lower molds 22 are located in the vibration disk 21, and the discharge end of the vibration disk 21 corresponds to the feed end of the demolding device 2. The vibration disk 21 is started to transport the un-demolded upper and lower molds 22 to the turntable 7 in sequence; the drive motor 14 is started to drive the turntable 7 at the output end of the drive motor 14 to rotate, and the rotation of the turntable 7 drives the several upper and lower molds 22 placed on the turntable 7 to be transported; when the un-demolded upper and lower molds 22 are transported to between the first track plate 9 and the second track plate 10, the step of the upper mold 23 is set on the bottom of the first inclined groove 11 and the second inclined groove 12. At this time, the upper and lower molds 22 continue to be transported along the rotation track of the turntable 7. The groove 12 is inclined, and during the conveying process of the upper and lower molds 22, a force is applied to the step of the upper mold 23 to pull the upper mold 23 out of the upper and lower molds 22, thereby realizing the separation of the upper mold 23 and the lower mold 24; the suction device 25 is started, and the exhaust pipe 6 of the suction device 25 is connected with the suction port to collect and process the consumables of the upper mold 23 after demolding; the lower mold 24 after demolding continues to be conveyed along the rotation direction of the turntable 7, and the outer edge of the lower mold 24 contacts the scraping teeth 16 on the glue removal ring 15 during the conveying process, and the scraping teeth 16 scrape off the possible overflow glue on the outer edge of the lower mold 24; finally, the demolded lower mold 24 is conveyed along the guide track to the feeding end of the receiving tray 17, and the receiving tray 17 collects several demolded lower molds 24 in a centralized manner.

[0045] The demolding device 2 is used to continuously demold the upper and lower molds 22. When several undemolded upper and lower molds 22 are transported to between the first track plate 9 and the second track plate 10, the first inclined groove 11 and the second inclined groove 12 can demold multiple upper molds 23 at the same time without waiting for the mechanical cycle, thereby shortening the demolding time required for demolding the upper and lower molds 22 and improving the demolding accuracy and production efficiency.

[0046] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A demoulding device, characterized in that: The invention comprises a placing rack (1), wherein a demoulding device (2) for demoulding upper and lower molds (22) is provided on the placing rack (1), a feeding device (3) for conveying the upper and lower molds (22) to the demoulding device (2) is provided at the feeding end of the demoulding device (2), and an adsorption device (4) for collecting the upper mold (23) after demoulding is provided on the placing rack (1), and the adsorption device (4) comprises a mounting rack (5) arranged on the placing rack (1), and a suction port is provided on the mounting rack (5), and a suction device (25) is provided on one side of the placing rack (1), and an exhaust pipe (6) of the suction device (25) is connected to the suction port.

2. The demoulding device according to claim 1, characterized in that: The demoulding device (2) comprises a turntable (7) rotatably connected to a placement frame (1); the upper and lower molds (22) are placed on the turntable (7); the placement frame (1) is provided with a driving unit for driving the turntable (7) to rotate; the placement frame (1) is provided with a limiting ring (8); the turntable (7) is arranged on the inner edge of the limiting ring (8); the limiting ring (8) is provided with a demoulding unit for demoulding the upper mold (23); and the turntable (7) is provided with a limiting unit for limiting the position of the lower mold (24).

3. The demoulding device according to claim 2, characterized in that: The demoulding unit comprises a first track plate (9) arranged on a limiting ring (8); a second track plate (10) is arranged on the surface of the mounting frame (5) facing the placement frame (1); a first inclined groove (11) matching the rotation trajectory of the turntable (7) is provided on the first track plate (9); a second inclined groove (12) matching the rotation trajectory of the turntable (7) is provided on the second track plate (10); and steps of the upper mold (23) are respectively mounted on the bottom of the first inclined groove (11) and the second inclined groove (12).

4. The demoulding device according to claim 2, characterized in that: The limiting unit comprises a gear ring (13) arranged on a rotating disk (7); a lower die (24) is located between the gear ring (13) and the limiting ring (8); and the lower die (24) is in contact with the inner edge of the limiting ring (8) and the outer edge of the gear ring (13) respectively.

5. The demoulding device according to claim 2, characterized in that: The driving unit comprises a driving motor (14) arranged on the placement rack (1), and the rotating disk (7) is arranged at the output end of the driving motor (14).

6. The demoulding device according to claim 4, characterized in that: The discharge end of the demoulding unit is provided with a degumming unit for degumming the lower mold (24), the degumming unit comprising a degumming ring (15) arranged on a limiting ring (8), the inner edge of the degumming ring (15) being provided with a plurality of degumming teeth (16), and the lower mold (24) being located between the gear ring (13) and the plurality of degumming teeth (16).

7. The demoulding device according to claim 6, characterized in that: The placement rack (1) is provided with a material receiving tray (17), and the material receiving tray (17) is arranged at the discharge end of the glue removal ring (15).

8. The demoulding device according to claim 7, characterized in that: The placement rack (1) is provided with a guide seat (18), and the guide seat (18) is provided with a first guide block (19) and a second guide block (20). A guide track is formed between the first guide block (19) and the second guide block (20), and the guide track is located between the discharge end of the degumming ring (15) and the feed end of the receiving tray (17). The lower mold (24) is transported to the receiving tray (17) along the guide track.

9. The demoulding device according to claim 7, characterized in that: The material receiving tray (17) is made of stainless steel.

10. The demoulding device according to claim 1, characterized in that: The loading device (3) comprises a vibration plate (21) arranged on a placement frame (1), a plurality of upper and lower molds (22) are located in the vibration plate (21), and the discharge end of the vibration plate (21) corresponds to the feed end of the demoulding device (2).

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