Lens bending and film pasting equipment

Abstract

The utility model discloses lens bending and film pasting equipment which comprises a rack, a lower die and an upper die, the lower die is arranged at the bottom end in the rack, the upper die is arranged at the top end in the rack, a lens feeding frame and a film feeding frame are arranged on the two sides of the rack respectively, and the lens feeding frame and the film feeding frame are arranged on the rack. Vacuum generators are arranged in the centers of the tops of the lens feeding frame and the film feeding frame correspondingly, suction cups are connected to the upper portions of the vacuum generators through air guide pipes correspondingly, and rotating rods are arranged on the two sides of the interior of the rack correspondingly. According to the utility model, the machine frame, the lower die, the upper die, the lens feeding frame, the film feeding frame, the rotating rod, the driving motor, a fixing sleeve, a second air cylinder, a sucking disc and a vacuum generator are arranged, so that the processes of lens feeding, bending forming, film body feeding and film pasting are automatically completed in the same equipment; and material transfer is not needed, so that a fitting gap caused by mold tolerance is avoided.

Description

Technical Field

[0001] This utility model relates to the field of lens processing technology, specifically to a lens bending and film-applying device. Background Technology

[0002] Lens bending equipment is a specialized device that bends flat or regularly shaped lenses into specific curvature surfaces through mechanical pressure, thermoforming, and other methods. It is mainly used for shaping optical lenses and electronic display screens (such as curved screens). Its core function is to precisely control parameters such as pressure, temperature, and mold shape to deform lenses (such as glass, resin, PC, etc.) according to a preset curvature, ensuring that the curvature accuracy meets the requirements of subsequent production.

[0003] After bending, the lens needs to be coated with a film. For some concave lenses, the curved surface of the film needs to be consistent with the bending surface. However, general lens bending equipment does not have the function of coating. Bending and coating need to be completed on two separate machines. After bending, the lens needs to be manually or mechanically transported to the coating equipment. If the interval is too long, the coating accuracy may be affected by surface contamination or slight shape rebound. Therefore, a lens bending and coating equipment is needed. Utility Model Content

[0004] The purpose of this invention is to provide a lens bending and film application device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lens bending and film-applying device, comprising a frame, a lower mold, and an upper mold. The lower mold is located at the bottom of the frame, and the upper mold is located at the top of the frame. A first cylinder is fixed to the top of the frame, and the output end of the first cylinder is connected to the upper mold via a telescopic column. Lens loading racks and film loading racks are respectively located on both sides of the frame. The bottom ends of the lens loading rack and the film loading rack are respectively adsorbed by suction cups. A vacuum generator is located at the center of the top of both the lens loading rack and the film loading rack, and the upper part of the vacuum generator is connected to the suction cup via an air guide pipe. Rotating rods are located on both sides of the frame, and drive motors are located in the frame below the rotating rods. The output ends of the drive motors are connected to the rotating rods. The sides of the lens loading rack and the film loading rack near the rotating rods are connected to the rotating rods via fixing sleeves.

[0006] Preferably, a first material trough and a second material trough are respectively provided below the lens loading rack and the film loading rack, and the first material trough and the second material trough are respectively used to store the lens body and the film body.

[0007] Preferably, each of the rotating rods has a strip-shaped hole on one side, and the fixing sleeve is locked and fixed to the strip-shaped hole by fasteners.

[0008] Preferably, a second cylinder is provided at both ends of the top of the lens loading rack and the film loading rack, and the output end of the second cylinder is connected to the suction cup via a telescopic rod. A silicone pad is provided at the bottom edge of the suction cup.

[0009] Preferably, a resistor is provided at the center of the upper mold, and heat-conducting plates are provided around the resistor via heat-conducting rods.

[0010] Preferably, both the heat-conducting rod and the heat-conducting plate are made of copper alloy, and the heat-conducting plate is connected to the lower arc surface inside the upper mold.

[0011] Preferably, the bottom end of the lower mold is provided with a cavity, and an air supply pipe is provided inside the cavity, with a pulse valve provided at one end of the air supply pipe.

[0012] Preferably, the top end of the air supply pipe is uniformly provided with air guiding channels, and the top end of the air guiding channels extends to the bottom surface of the inner cavity of the lower mold.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This lens bending and film-applying equipment is equipped with a frame, lower mold, upper mold, lens loading rack, film loading rack, rotating rod, drive motor, fixing sleeve, second cylinder, suction cup, and vacuum generator. After the suction cup on the lens loading rack adsorbs the lens body, the drive motor drives the rotating rod to rotate, rotating the lens loading rack above the lower mold. Then, the lens body is placed on the lower mold, the lens loading rack resets, the cylinder drives the upper mold to press down, bending the lens body into shape in the lower mold. Afterward, the upper mold resets, and the suction cup on the film loading rack adsorbs the lens body. The film is rotated to the top of the lower mold. After the film is placed on the lower mold, the upper mold presses down again to attach the film to the bent lens body. This allows the processes of lens feeding, bending, film feeding, and film application to be completed automatically in the same equipment without the need for material transfer. This reduces the risk of surface contamination or slight shape rebound that may occur due to excessive transfer time, thus avoiding affecting the film application accuracy. The curvature of the bent lens body is directly defined by the upper mold. When applying the film, the upper mold presses down again, ensuring that the film can completely fit the curved surface of the lens body, avoiding gaps caused by mold tolerances. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a frontal cross-sectional view of the present invention.

[0016] Figure 2 This is a schematic diagram of the membrane loading rack structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the lower mold of this utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the upper mold of this utility model;

[0019] Figure 5 This is a schematic diagram of the suction cup structure of this utility model from a bottom view.

[0020] In the diagram: 1. Frame; 2. Lower mold; 3. Upper mold; 4. First cylinder; 5. Lens loading rack; 6. Film loading rack; 7. Lens body; 8. Film body; 9. First material trough; 10. Second material trough; 11. Drive motor; 12. Rotating rod; 13. Fixing sleeve; 14. Suction cup; 15. Vacuum generator; 16. Second cylinder; 17. Strip hole; 18. Fastener; 19. Pulse valve; 20. Chamber; 21. Air supply pipe; 22. Air guide channel; 23. Resistor; 24. Heat-conducting rod; 25. Heat-conducting plate; 26. Silicone pad. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] Please see Figure 1-5 The present invention provides an embodiment of a lens bending and film application device, which includes a frame 1, a lower mold 2 and an upper mold 3. The lower mold 2 is provided at the bottom of the inside of the frame 1, and the upper mold 3 is provided at the top of the inside of the frame 1. A first cylinder 4 is fixed at the top of the frame 1, and the output end of the first cylinder 4 is connected to the upper mold 3 through a telescopic column.

[0023] The frame 1 is provided with a lens loading rack 5 and a film loading rack 6 on both sides, and the bottom ends of the lens loading rack 5 and the film loading rack 6 are respectively attached to the lens body 7 and the film body 8 by suction cup 14.

[0024] The lens loading rack 5 and the film loading rack 6 are respectively provided with a first material trough 9 and a second material trough 10 below them, and the first material trough 9 and the second material trough 10 are respectively used to store the lens body 7 and the film body 8.

[0025] The groove limiting structure, such as the slot and partition, ensures that the materials are arranged neatly, and the suction cup 14 can accurately position and grab them, avoiding the chaos and time-consuming process of manual feeding.

[0026] Vacuum generators 15 are installed at the center of the top of both the lens loading rack 5 and the film loading rack 6, and the upper part of the vacuum generators 15 is connected to the suction cups 14 through air guide pipes.

[0027] Both ends of the top of the lens loading rack 5 and the film loading rack 6 are equipped with a second cylinder 16, and the output end of the second cylinder 16 is connected to the suction cup 14 through a telescopic rod. A silicone pad 26 is provided at the bottom edge of the suction cup 14.

[0028] The second cylinder 16 drives the suction cup 14 to move up and down, which can adapt to materials with different stacking heights. The edge of the silicone pad 26 is in close contact with the surface of the material, and together with the vacuum generator 15, a sealed space is formed to prevent air leakage during the adsorption process and cause the material to fall.

[0029] During processing, the second cylinder 16 at the top of the lens loading rack 5 extends, driving the suction cup 14 to descend to the surface of the lens body 7 in the first material trough 9. The vacuum generator 15 is started, and the suction cup 14 generates negative pressure to adsorb the lens body 7 through the air guide tube.

[0030] Rotating rods 12 are provided on both sides inside the frame 1, and drive motors 11 are provided in the frame 1 below the rotating rods 12. The output ends of the drive motors 11 are connected to the rotating rods 12. The lens loading rack 5 and the film loading rack 6 are connected to the rotating rods 12 on the side near the rotating rods 12 through the fixing sleeves 13.

[0031] Each side of the rotating rod 12 has a strip hole 17, and the fixing sleeve 13 is locked and fixed to the strip hole 17 by fasteners 18.

[0032] The slot 17 of the rotating rod 12 allows the fixing sleeve 13 to be vertically adjusted within a certain range. After being locked by the fastener 18, it can be adapted to lens loading rack 5 and film loading rack 6 of different sizes.

[0033] After the suction cup 14 on the lens loading rack 5 generates negative pressure to adsorb the lens body 7, the drive motor 11 starts and drives the rotating rod 12 to rotate 180°, so that the lens loading rack 5 is aligned with the lower mold 2. The second cylinder 16 extends and places the lens body 7 into the cavity of the lower mold 2. The vacuum generator 15 is turned off and the suction cup 14 releases the lens body 7.

[0034] A resistor 23 is installed in the center of the upper mold 3. When energized, it heats up and raises the temperature of the upper mold 3. The first cylinder 4 drives the upper mold 3 to press down. The pressure is transmitted to the lens body 7 through the curved surface of the upper mold 3, causing it to soften and conform to the cavity of the lower mold 2 to complete the bending. (The resistor 23 works in conjunction with a temperature sensor to achieve temperature control. The specific model of the temperature sensor is determined by selection calculation based on the specifications and parameters of the device, which is the prior art.)

[0035] Heat-conducting plates 25 are provided around the resistor 23 via heat-conducting rods 24. Both heat-conducting rods 24 and heat-conducting plates 25 are made of copper alloy. The heat-conducting plates 25 are connected to the lower arc surface inside the upper mold 3, so that the softening degree of each part of the lens body 7 is consistent when it is bent, avoiding yellowing or uneven deformation caused by local overheating.

[0036] After the bending process is completed, the lens loading rack 5 rotates back to the top of the first material trough 9 via the rotating rod 12, ready for the next loading. The second cylinder 16 of the film loading rack 6 descends, the suction cup 14 adsorbs the film 8 in the second material trough 10, and the drive motor 11 drives the film loading rack 6 to rotate 180°, so that it is aligned with the bent lens body 7 on the lower mold 2.

[0037] The second cylinder 16 of the film loading rack 6 descends, covering the film body 8 onto the surface of the bent lens body 7. The vacuum generator 15 is turned off, and the first cylinder 4 drives the upper mold 3 to press down again, applying pressure to the film body 8 so that it is completely attached to the lens body 7.

[0038] The process of feeding the lens body 7, bending and forming, feeding the film body 8 and applying the film is completed automatically in the same equipment. There is no need to transfer materials, which reduces the possibility of surface contamination or slight shape rebound of the lens body 7 due to excessive transfer time, and avoids affecting the film application accuracy.

[0039] The curvature of the bent lens body 7 is directly defined by the upper mold 3. When applying the film, the upper mold 3 is pressed down again, and the film 8 can completely fit the curved surface of the lens body 7, avoiding the gap caused by mold tolerance.

[0040] The bottom end of the lower mold 2 is provided with a chamber 20, and an air supply pipe 21 is provided inside the chamber 20. A pulse valve 19 is provided at one end of the air supply pipe 21.

[0041] The top end of the air supply pipe 21 is uniformly provided with air guiding channels 22, and the top end of the air guiding channels 22 extends to the bottom surface of the inner cavity of the lower mold 2.

[0042] The pulse valve 19 controls the instantaneous air pressure of compressed air through the air supply pipe 21 and the air guide channel 22, which is evenly applied to the bottom of the lens body 7, so that the lens body 7 is separated from the cavity of the lower mold 3, making it easier to remove the lens body 7 while avoiding edge breakage caused by mechanical ejector pins.

[0043] The specific models and specifications of the first cylinder 4, the second cylinder 16, the vacuum generator 15, the drive motor 11, and the resistor 23 need to be determined based on the specifications and parameters of the device. The selection and calculation method is existing technology, so it will not be described in detail here.

[0044] Working principle: In this embodiment, the lower mold 2 is located at the bottom of the frame 1, the upper mold 3 is located at the top, the first cylinder 4 is on standby, the lens loading rack 5 is located above the first material trough 9, the film loading rack 6 is located above the second material trough 10, the suction cup 14 is kept closed by the vacuum generator 15, the rotating rod 12 is in the initial position, the drive motor 11 is not started, and the fixing sleeve 13 is locked to the strip hole 17 of the rotating rod 12 by the fastener 18. During processing, the second cylinder 16 at the top of the lens loading rack 5 extends, driving the suction cup 14 to descend into the first material trough 9. On the surface of the lens body 7, the vacuum generator 15 is activated, creating negative pressure through the air guide tube to suction cup 14 to adsorb the lens body 7. The second cylinder 16 retracts, lifting the lens body 7 to a safe height. The drive motor 11 starts, rotating the rotating rod 12 180°, aligning the lens loading rack 5 with the lower mold 2. The second cylinder 16 extends, placing the lens body 7 into the cavity of the lower mold 2. The vacuum generator 15 is turned off, and the suction cup 14 releases the lens body 7. The resistive element 23 in the upper mold 3 is energized and heats up. The heat is evenly transferred to the lower arc surface through the heat-conducting rod 24 and the heat-conducting plate 25. The temperature of the upper mold 3 is raised to the set value. The first cylinder 4 drives the upper mold 3 to press down. The pressure is transmitted to the lens body 7 through the curved surface of the upper mold 3, so that it fits into the cavity of the lower mold 2 to complete the bending. The lens loading rack 5 rotates back above the first material groove 9 via the rotating rod 12, ready for the next loading. The second cylinder 16 of the film loading rack 6 descends, and the suction cup 14 adsorbs the film body 8 in the second material groove 10. The drive motor 11 drives the film loading rack 6 to rotate 180°, so that it is aligned with the bent lens on the lower mold 2. The second cylinder 16 of the film loading rack 6 descends, covering the bent lens body 8 with the film body 8. After the vacuum generator 15 is turned off, the first cylinder 4 drives the upper mold 3 to press down again, applying pressure to the film 8 so that it is completely attached to the lens body 7. Then the upper mold 3 rises and resets, and the film loading rack 6 returns to its initial position. Since the air supply pipe 21 is connected to an external compressed air source, when the pulse valve 19 is opened, the compressed air is sprayed upward through the air guide channel 22, forming a brief air pressure layer between the lens body 7 and the cavity of the lower mold 3, causing the lens body 7 to suspend or slightly bounce up, destroying the adsorption force and friction pressure between the two, making it easier to remove the lens body 7.

[0045] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0046] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0047] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lens bending and film-applying device, characterized in that, The assembly includes a frame (1), a lower mold (2), and an upper mold (3). The lower mold (2) is located at the bottom of the frame (1), and the upper mold (3) is located at the top of the frame (1). A first cylinder (4) is fixed to the top of the frame (1), and the output end of the first cylinder (4) is connected to the upper mold (3) via a telescopic column. A lens loading rack (5) and a film loading rack (6) are respectively located on both sides of the frame (1). The bottom ends of the lens loading rack (5) and the film loading rack (6) are respectively attached to a lens body (7) and a film body (8) by suction cups (14). Vacuum generators (15) are provided at the center of the top of both the film loading rack (5) and the film loading rack (6), and the vacuum generators (15) are connected to the suction cups (14) through air guide pipes. Rotating rods (12) are provided on both sides inside the frame (1), and drive motors (11) are provided in the frame (1) below the rotating rods (12). The output ends of the drive motors (11) are connected to the rotating rods (12). The side of the lens loading rack (5) and the film loading rack (6) near the rotating rods (12) are connected to the rotating rods (12) through fixing sleeves (13).

2. The lens bending and film-applying equipment according to claim 1, characterized in that: The lens loading rack (5) and the film loading rack (6) are respectively provided with a first material trough (9) and a second material trough (10), and the first material trough (9) and the second material trough (10) are respectively used to store the lens body (7) and the film body (8).

3. The lens bending and film-applying equipment according to claim 1, characterized in that: Each of the rotating rods (12) has a strip hole (17) on one side, and the fixing sleeves (13) are locked and fixed to the strip hole (17) by fasteners (18).

4. The lens bending and film-applying equipment according to claim 1, characterized in that: The lens loading rack (5) and the film loading rack (6) are each equipped with a second cylinder (16) at both ends of the top, and the output end of the second cylinder (16) is connected to the suction cup (14) through a telescopic rod. The suction cup (14) is equipped with a silicone pad (26) at the bottom edge.

5. The lens bending and film-applying equipment according to claim 1, characterized in that: A resistor (23) is provided at the center of the upper mold (3), and a heat-conducting plate (25) is provided around the resistor (23) via a heat-conducting rod (24).

6. The lens bending and film-applying equipment according to claim 5, characterized in that: The heat-conducting rod (24) and the heat-conducting plate (25) are both made of copper alloy, and the heat-conducting plate (25) is connected to the lower arc surface inside the upper mold (3).

7. The lens bending and film-applying equipment according to claim 1, characterized in that: The bottom end of the lower mold (2) is provided with a chamber (20), and an air supply pipe (21) is provided inside the chamber (20), and a pulse valve (19) is provided at one end of the air supply pipe (21).

8. The lens bending and film-applying equipment according to claim 7, characterized in that: The top end of the air supply pipe (21) is uniformly provided with an air guide channel (22), and the top end of the air guide channel (22) extends to the bottom surface of the inner cavity of the lower mold (2).

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