Optical lens feeding and film tearing all-in-one machine and control method thereof

Abstract

The embodiment of the application discloses an optical lens feeding and film tearing integrated machine and a control method thereof.The integrated machine comprises a Y-axis driving mechanism, a feeding table, a lens pressing part, a lens feeding clamp, a film tearing motor and a winding shaft.A feeding area is arranged on the feeding table.The lens feeding clamp is arranged on the Y-axis driving mechanism, and is used for clamping and pushing the optical lens on the feeding table to feed forward along the feeding area.The lens pressing part is correspondingly arranged above the front side of the feeding area of the feeding table, and the lens pressing part is provided with a crack processing hole through which laser can pass.The film tearing motor is connected with the winding shaft, and the winding shaft is used for connecting and tearing off the film at the bottom of the optical lens.The Y-axis driving mechanism and the film tearing motor are synchronously controlled to perform precise feeding and film tearing actions, the rotation speed and the torque of the film tearing motor and the pushing speed of the Y-axis driving mechanism are precisely controlled, and the film is precisely torn while feeding.The application has the characteristics of simple use, good stability, high efficiency and high yield.

Description

Technical Field

[0001] This invention relates to the field of optical lens processing technology, and in particular to an integrated optical lens feeding and film-tearing machine and its control method. Background Technology

[0002] Before laser cleaving, sapphire optical lenses need to be precisely positioned with an error margin of 0.03mm. During laser cleaving, the high temperatures often cause the sapphire lens to crack along the pre-cut line, making subsequent cleaving difficult. Therefore, a film (usually a blue film) is typically applied to the sapphire optical lens before feeding it for cleaving. This solves the problem of the sapphire sheet scattering during cleaving. The blue film protects the lens surface from scratches and holds the lens in place, preventing it from falling apart during processing and transport.

[0003] However, during the cleaving process, the coating at the cleaving location must be removed. This is because the high-temperature cleaving process causes the blue coating to adhere to the sapphire lens. Therefore, it is essential to precisely position the sapphire lens component while simultaneously removing the coating beneath the cleaving location. Summary of the Invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide an integrated feeding and film-removing machine for optical lenses and its control method, so as to remove the film at the crack position of the optical lens while feeding the lens.

[0005] To address the aforementioned technical problems, this invention provides an integrated optical lens feeding and film-tearing machine, comprising a Y-axis drive mechanism, a feeding table, a lens pressing component, a lens feeding clamp, a film-tearing motor, and a take-up shaft. The feeding table has a feeding area; the lens feeding clamp is mounted on the Y-axis drive mechanism and is used to clamp and push the optical lens on the feeding table forward along the feeding area; the lens pressing component is correspondingly located above the front side of the feeding area of ​​the feeding table and has a cleaving hole for easy laser penetration; the feeding area on the feeding table has a corresponding film-passing hole; the film-tearing motor is connected to the take-up shaft, which is used to connect to and tear off the film at the bottom of the optical lens.

[0006] Furthermore, the all-in-one machine satisfies: n =60 V / 2 πr ; ; ; Where n is the rotational speed of the film-tearing motor during film tearing, V is the speed at which the Y-axis drive mechanism pushes the lens feeder, r is the radius of the take-up shaft, T is the torque of the film-tearing motor during film tearing, f is the adhesion force between the film per unit width perpendicular to the optical lens surface and the optical lens, L is the width of the optical lens, and θ is the film-tearing angle. T 额 K represents the rated torque of the film-tearing motor, and K is the safety factor.

[0007] Furthermore, the integrated machine also includes an X-axis drive mechanism, a Y-axis drive mechanism, and a feeding table correspondingly disposed on the X-axis drive mechanism.

[0008] Furthermore, a receiving box is provided on the lower front side of the feeding area of ​​the feeding platform.

[0009] Furthermore, the surface of the feeding area is lower than the surface of the feeding table.

[0010] Furthermore, the rear edge of the top of the membrane aperture is an arc surface.

[0011] Furthermore, the feeding platform is equipped with an anti-airway groove in the middle of the feeding area to facilitate the forward pushing of the optical lens by the lens feeding clamp.

[0012] Furthermore, guide pins are vertically installed on the feeding platform, and the mirror pressing parts are correspondingly inserted through the guide pins.

[0013] Furthermore, a downward pressure spring is provided on the guide pin, with both ends of the downward pressure spring acting on the guide pin and the pressure lens component respectively, applying a downward elastic force to the pressure lens component.

[0014] Accordingly, embodiments of the present invention also provide a control method for an integrated optical lens feeding and film-tearing machine, comprising: Step 1: Place the optical lens to be peeled on the feeding area of ​​the feeding table, clamp and fix the optical lens with the lens feeding clamp, pass the front end of the film at the bottom of the optical lens through the film hole and fix it on the take-up shaft, and control the film peeling motor to drive the take-up shaft to rotate and pre-tighten. Step 2: Synchronously drive the Y-axis drive mechanism and the film-tearing motor to feed the lens into the feeder at a speed V, while the take-up shaft tears the film. Stop when the optical lens reaches the cleaving station. The speed V satisfies the following conditions: n =60 V / 2 πr ; ; Where n is the rotational speed of the film-tearing motor during film tearing, V is the speed at which the Y-axis drive mechanism pushes the lens feeder, r is the radius of the take-up shaft, T is the torque of the film-tearing motor during film tearing, f is the adhesion force between the film per unit width perpendicular to the surface of the optical lens and the optical lens, L is the width of the optical lens, and θ is the film-tearing angle.

[0015] The beneficial effects of this invention are as follows: This invention achieves precise feeding and film tearing actions by synchronously controlling the Y-axis drive mechanism and the film tearing motor. By precisely controlling the speed and torque of the film tearing motor and the pushing speed of the Y-axis drive mechanism, film tearing is performed precisely while feeding. This invention is characterized by its simplicity, stability, high efficiency, and high yield. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the optical lens feeding and film-tearing integrated machine in application according to an embodiment of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the optical lens feeding and film-tearing integrated machine according to an embodiment of the present invention.

[0018] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 This is a three-dimensional structural diagram of an optical lens feeding and film-tearing integrated machine according to another embodiment of the present invention.

[0020] Figure 5 This is a three-dimensional structural diagram of the pressure plate component according to an embodiment of the present invention.

[0021] Figure 6 This is a three-dimensional structural diagram of the feeding mechanism according to an embodiment of the present invention.

[0022] Figure 7 This is a partial structural diagram of the feeding table of the optical lens feeding and film-tearing integrated machine according to an embodiment of the present invention, after it is hidden.

[0023] Explanation of icon numbers 1. Optical lens; 2. Film; 10. Y-axis drive mechanism; 11. Lens feeding clamp; 20. Feeding table; 21. Feeding area; 22. Lens pressing component; 23. Film through hole; 24. Guide pin; 25. Downward pressure spring; 26. Clearance groove; 27. Splitting processing hole; 30. Film tearing motor; 31. Rewinding shaft; 40. X-axis drive mechanism; 50. Receiving box; 60. Laser splitting equipment; 61. Laser. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] In this embodiment of the invention, directional indicators (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0027] Please refer to Figures 1 to 7 The optical lens feeding and film-tearing integrated machine of this invention includes a Y-axis drive mechanism, a feeding table, a lens pressing component, a lens feeding clamp, a film-tearing motor, and a winding shaft.

[0028] The feeding table has a feeding area. The surface of the feeding area is lower than the surface of the feeding table. That is, the feeding area is a groove, which serves to position and guide the optical lens. Preferably, the depth of the feeding area is equal to the total thickness of the optical lens to be peeled off.

[0029] The lens feeder is mounted on the Y-axis drive mechanism. The lens feeder is used to hold and push the optical lenses on the feed table forward along the feed area. The Y-axis drive mechanism is preferably a servo screw drive mechanism.

[0030] The lens pressing component is positioned above the front of the feeding area on the feeding table, with its two sides located on the feeding tables on either side of the feeding area. The lens pressing component has cleaving holes to facilitate laser penetration. The laser from the laser cleaving equipment passes through these holes and cleaves the optical lens below the lens pressing component at the cleaving point. The lens pressing component applies slight pressure to the optical lens on the feeding table below, serving both pressure application and positioning functions to prevent the optical lens from shifting (after laser cleaving, the optical lens will crack; without pressure, the cleaved lens will move erratically, causing misalignment).

[0031] Preferably, guide pins are vertically provided on the feeding platform, and the guide pins include two sets, correspondingly located on the feeding platforms on both sides of the feeding area. The lens pressing component is movably mounted on the guide pins. The lens pressing component can lightly press the optical lens using its own weight. Preferably, a downward pressure spring is provided on the guide pin, and the two ends of the downward pressure spring act on the guide pin and the lens pressing component respectively, applying a downward elastic force to the lens pressing component.

[0032] The feeding area on the feeding table is equipped with corresponding transom holes. These transom holes are perpendicular to the feeding direction, i.e., perpendicular to the Y-axis, and distributed along the X-axis to avoid interference between the film and the edge of the transom holes. Preferably, the rear edge of the top of the transom hole is curved to prevent interference between the film and the hole edge, thus avoiding any impact on film removal. The transom holes are located on the rear side of the lens pressing component, ensuring that the lens separates from the film before reaching the cleaving position.

[0033] A film-tearing motor is connected to a take-up shaft, which is used to connect to and tear off the film on the bottom of the optical lens. A stall motor is preferably used for the film-tearing motor. The length of the take-up shaft is greater than the width of the film; preferably, the take-up shaft is lower than the feed table, i.e., the take-up shaft (via bearings) is mounted below the feed table.

[0034] As one implementation method, the all-in-one machine satisfies: n =60 V / 2 πr ; ; ; Where, n is the rotational speed of the film-tearing motor during film tearing, r / min; V is the speed at which the Y-axis drive mechanism pushes the lens feeder, mm / s; r is the radius of the take-up shaft, mm; T is the torque of the film-tearing motor during film tearing, N·mm. f is the adhesion force (also known as viscosity value) between the film and the optical lens per unit width perpendicular to the optical lens surface, which can be obtained from experiments or the optical lens's factory data, in N / mm. L is the width of the optical lens (i.e., the width at the tear point, the width of the joint between the optical lens and the film), mm. θ is the tearing angle, θ is usually greater than 60°. T 额 K is the rated torque of the film-tearing motor, and K is the safety factor (usually taken as 1.5~2.0).

[0035] This invention, through precise control of the rotational speed and torque of the film-tearing motor and the pushing speed of the Y-axis drive mechanism, avoids the situation where the film below the optical lens is not yet peeled off when the optical lens is delivered to the cleaving position; and avoids the situation where the film below the optical lens is peeled off prematurely (premature peeling is not conducive to protecting the lens surface, and the pulling force of premature film peeling will affect the accuracy of the feeding position of the Y-axis drive mechanism, with a position error generally within 0.03mm).

[0036] In one embodiment, the integrated machine further includes an X-axis drive mechanism, a Y-axis drive mechanism, and a feeding table correspondingly disposed on the X-axis drive mechanism to realize feeding in the XY axis directions. The X-axis drive mechanism is preferably a servo screw drive mechanism.

[0037] In one implementation, a receiving box is provided below the front of the feeding area of ​​the feeding station. After the lens is cleaved, the optical lenses behind it continue to be pushed forward, and the cleaved lenses will automatically fall into the receiving box (including waste materials), and then undergo further screening and other processes.

[0038] As one implementation method, a clearance groove is provided in the middle of the feeding area on the feeding platform to facilitate the forward pushing of the optical lens by the lens feeding clamp, making the overall structure more compact and the feeding more stable.

[0039] The working principle of this invention is as follows: The optical lens to be cracked is placed in the feeding area of ​​the feeding table. The tail end of the optical lens is clamped and fixed by the lens feeding clamp. The pre-reserved front end of the film of the optical lens is passed through the film hole and pre-wound onto the take-up shaft. The film-tearing motor is controlled to drive the take-up shaft to rotate and pre-tighten, so that the film is in a taut state. The Y-axis drive mechanism and the film-tearing motor are driven synchronously. When the lens feeding clamp moves forward, the film loosens, and the film-tearing motor continues to wind and tear the film. This process is repeated automatically until the entire lens is cracked.

[0040] The control method of the optical lens feeding and film-tearing integrated machine of this invention includes steps 1 and 2.

[0041] Step 1: Place the optical lens to be peeled on the feeding area of ​​the feeding table, clamp and fix the optical lens with the lens feeding clamp, pass the front end of the film at the bottom of the optical lens through the film hole and fix it on the take-up shaft, control the film peeling motor to drive the take-up shaft to rotate and pre-tighten, so that the film is in a taut state.

[0042] Step 2: Synchronously drive the Y-axis drive mechanism and the film-tearing motor to feed the lens into the feeder at a speed V, while the take-up shaft tears the film. Stop when the optical lens reaches the cleaving station. The speed V satisfies the following conditions: n =60 V / 2 πr ; ; Where n is the rotational speed of the film-tearing motor during film tearing, V is the speed at which the Y-axis drive mechanism pushes the lens feeder, r is the radius of the take-up shaft, T is the torque of the film-tearing motor during film tearing, f is the adhesion force between the film per unit width perpendicular to the surface of the optical lens and the optical lens, L is the width of the optical lens, and θ is the film-tearing angle.

[0043] This invention avoids tension fluctuations and is particularly suitable for the peeling and winding process of blue film on microporous glass sheets where high tension stability is required.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated feeding and film-tearing machine for optical lenses, characterized in that, The system includes a Y-axis drive mechanism, a feeding table, a lens pressing component, a lens feeding clamp, a film-tearing motor, and a take-up shaft. The feeding table has a feeding area. The lens feeding clamp is mounted on the Y-axis drive mechanism and is used to hold and push the optical lens on the feeding table forward along the feeding area. The lens pressing component is located above and in front of the feeding area of ​​the feeding table and has a splitting hole to facilitate laser penetration. The feeding area on the feeding table has a corresponding film-passing hole. The film-tearing motor is connected to the take-up shaft, which is used to connect to and tear off the film on the bottom of the optical lens.

2. The optical lens feeding and film-tearing integrated machine as described in claim 1, characterized in that, The all-in-one machine satisfies: n =60 V / 2 πr ； ； ； Where n is the rotational speed of the film-tearing motor during film tearing, V is the speed at which the Y-axis drive mechanism pushes the lens feeder, r is the radius of the take-up shaft, T is the torque of the film-tearing motor during film tearing, f is the adhesion force between the film per unit width perpendicular to the optical lens surface and the optical lens, L is the width of the optical lens, and θ is the film-tearing angle. T 额 K represents the rated torque of the film-tearing motor, and K is the safety factor.

3. The optical lens feeding and film-peeling integrated machine as described in claim 1, characterized in that, The integrated machine also includes an X-axis drive mechanism, a Y-axis drive mechanism, and a feeding table, which are respectively mounted on the X-axis drive mechanism.

4. The optical lens feeding and film-peeling integrated machine as described in claim 1, characterized in that, A receiving box is located on the lower front side of the feeding area of ​​the feeding platform.

5. The optical lens feeding and film-tearing integrated machine as described in claim 1, characterized in that, The surface of the feeding area is lower than the surface of the feeding table.

6. The optical lens feeding and film-peeling integrated machine as described in claim 1, characterized in that, The rear edge of the top of the membrane aperture is curved.

7. The optical lens feeding and film-peeling integrated machine as described in claim 1, characterized in that, An anti-airway groove is provided in the middle of the feeding area on the feeding platform to facilitate the forward pushing of the optical lens by the lens feeding clamp.

8. The optical lens feeding and film-peeling integrated machine as described in claim 1, characterized in that, Guide pins are vertically installed on the feeding platform, and the mirror pressing parts are correspondingly inserted through the guide pins.

9. The optical lens feeding and film-tearing integrated machine as described in claim 8, characterized in that, A downward pressure spring is provided on the guide pin. The two ends of the downward pressure spring act on the guide pin and the pressure lens component respectively, applying a downward elastic force to the pressure lens component.

10. A control method for an integrated optical lens feeding and film-tearing machine as described in any one of claims 1-9, characterized in that, include: Step 1: Place the optical lens to be peeled on the feeding area of ​​the feeding table, clamp and fix the optical lens with the lens feeding clamp, pass the front end of the film at the bottom of the optical lens through the film hole and fix it on the take-up shaft, and control the film peeling motor to drive the take-up shaft to rotate and pre-tighten. Step 2: Synchronously drive the Y-axis drive mechanism and the film-tearing motor to feed the lens into the feeder at a speed V, while the take-up shaft tears the film. Stop when the optical lens reaches the cleaving station. The speed V satisfies the following conditions: n =60 V / 2 πr ； ； Where n is the rotational speed of the film-tearing motor during film tearing, V is the speed at which the Y-axis drive mechanism pushes the lens feeder, r is the radius of the take-up shaft, T is the torque of the film-tearing motor during film tearing, f is the adhesion force between the film per unit width perpendicular to the surface of the optical lens and the optical lens, L is the width of the optical lens, and θ is the film-tearing angle.

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