Automatic cutting mechanism for optical lens

Abstract

The utility model relates to the technical field of lens processing, in particular to an automatic optical lens cutting mechanism which comprises a frame body, an upper cutter rest arranged on the frame body, a lower cutter rest movably arranged on the frame body and a driving piece used for driving the lower cutter rest to be close to or away from the upper cutter rest. The lower knife rest comprises a base, an adjusting block arranged on the base, a lower heating block arranged on the adjusting block, a lower blade arranged on the lower heating block in a sliding mode, an adjusting groove formed in the lower blade and a connecting hole formed in the lower heating block and used in cooperation with the adjusting groove, and a mounting hole is formed in the base. And the adjusting block is provided with an adjusting hole matched with the mounting hole for use. The position of the blade is effectively adjusted, the requirement for cutting water gaps of lenses of different specifications and sizes is met, the application range is wide, and the machining quality and the yield of the lenses are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lens processing, in particular to an automatic cutting mechanism for optical lenses. Background Art

[0002] In the optical industry, lenses are an indispensable and important part. They have relatively excellent optical properties, light transmittance, mechanical and chemical properties, and a constant refractive index. Their physical and chemical properties are stable. During the manufacturing and processing of lenses, cutting treatment is required. However, most of the existing cutting mechanisms use two blades to clamp and cut the lens water inlet from left and right. The cutting accuracy is low, and the positions of the blades are fixed and cannot be adjusted adaptively according to the actual specifications of the lens water inlet, making it difficult to ensure a one-time cut of the lens water inlet, resulting in a high scrap rate of lenses and affecting the processing quality and yield rate of lenses. Content of the Utility Model

[0003] The purpose of the utility model is to provide an automatic cutting mechanism for optical lenses in view of the deficiencies of the prior art, which can effectively adjust the position of the blade, meet the cutting requirements of lens water inlets with different specifications, has a wide application range, and improves the processing quality and yield rate of lenses.

[0004] To achieve the above purpose, an automatic cutting mechanism for optical lenses of the utility model includes a frame body, an upper tool rest arranged on the frame body, a lower tool rest movably arranged on the frame body, and a driving member for driving the lower tool rest to approach or move away from the upper tool rest. The lower tool rest includes a base, an adjusting block arranged on the base, a lower heating block arranged on the adjusting block, a lower blade slidably arranged on the lower heating block, an adjusting groove arranged on the lower blade, and a connecting hole arranged on the lower heating block and cooperating with the adjusting groove. The base is provided with a mounting hole, and the adjusting block is provided with an adjusting hole cooperating with the mounting hole.

[0005] Preferably, the upper tool rest is provided with an upper heating block and an upper blade arranged on the upper heating block. The driving member drives the lower blade to move towards the upper blade through the base, so that the lower blade abuts against the upper blade.

[0006] Preferably, an induction sheet is arranged on the outer side of the base, and a photoelectric sensor cooperating with the induction sheet is arranged on the outer side of the frame body.

[0007] Preferably, the base is provided with a slider, and the frame body is provided with a guide rail slidably connected with the slider.

[0008] Preferably, the driving member includes a speed reducer, a servo motor drivingly connected with the speed reducer, a coupling arranged at the output end of the speed reducer, a lead screw member connected with the coupling, and a nut screwed on the outer side of the lead screw member. The nut is connected with the base.

[0009] Preferably, reinforcing ribs are provided on both sides of the frame body.

[0010] Advantages of the present utility model: Effectively adjust the position of the blade to meet the cutting requirements of the lens water ports of different specifications and sizes, with a wide range of applications, improving the processing quality and yield rate of the lenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural view of the present utility model.

[0012] Figure 2 is a front view structural schematic diagram of the present utility model.

[0013] Figure 3 is a side view structural schematic diagram of the present utility model.

[0014] Reference numerals include:

[0015] 1 - frame body, 11 - photoelectric inductor, 12 - guide rail

[0016] 13 - reinforcing rib

[0017] 2 - upper tool holder, 21 - upper heating block, 22 - upper blade

[0018] 3 - lower tool holder, 31 - base, 32 - adjustment block

[0019] 33 - lower heating block, 34 - lower blade, 35 - adjustment groove

[0020] 36 - connection hole, 37 - mounting hole, 38 - adjustment hole

[0021] 39 - induction piece, 310 - slider

[0022] 4 - driving member, 41 - reduction gear, 42 - servo motor

[0023] 43 - coupling, 44 - lead screw member, 45 - nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present utility model will be described in detail below with reference to the accompanying drawings.

[0025] As Figures 1 to 3As shown in the figure, an automatic cutting mechanism for an optical lens of the present utility model includes a frame body 1, an upper knife rest 2 arranged on the frame body 1, a lower knife rest 3 movably arranged on the frame body 1, and a driving member 4 for driving the lower knife rest 3 to approach or move away from the upper knife rest 2. The lower knife rest 3 includes a base 31, an adjustment block 32 arranged on the base 31, a lower heating block 33 arranged on the adjustment block 32, a lower blade 34 slidably arranged on the lower heating block 33, an adjustment groove 35 arranged on the lower blade 34, and a connection hole 36 arranged on the lower heating block 33 and cooperating with the adjustment groove 35. The base 31 is provided with a mounting hole 37, and the adjustment block 32 is provided with an adjustment hole 38 cooperating with the mounting hole 37.

[0026] During operation, the lower heating block 33 is moved up and down relative to the base 31 to adjust the position of the lower heating block 33, so as to roughly adjust the position between the lower blade 34 and the upper knife rest 2. Then, an external screw is used to pass through the adjustment hole 38 and connect and fix it in the mounting hole 37, so as to fix the position of the adjustment block 32 on the base 31. Then, the lower blade 34 is slid up and down relative to the lower heating block 33 to adjust the position of the lower blade 34. Then, an external screw is used to pass through the adjustment groove 35 and connect and fix it in the connection hole 36, so as to fix the position of the lower blade 34 on the lower heating block 33, thereby accurately adjusting the distance between the lower blade 34 and the upper knife rest 2. When the driving member 4 drives the lower knife rest 3 to approach the upper knife rest 2, the lower blade 34 and the upper knife rest 2 are quickly and tightly closed to cut off the lens water inlet. Moreover, the lower heating block 33 generates heat by using an electric heating wire. The lower heating block 33 can conduct a cutting temperature ranging from 150 degrees Celsius to 180 degrees Celsius to the lower blade 34, which can not only completely cut off the lens water inlet, but also improve the cutting quality of the lens water inlet. For the plastic optical lens and plastic spectacle lens injection molded by the molding machine, it is suitable for cutting the lens water inlet, and the cutting range is from 20 mm to 75 mm in lens diameter and from 1 mm to 10 mm in lens thickness. The present utility model effectively adjusts the position of the blade, meets the cutting requirements of lens water inlets of different specifications and sizes, has a wide application range, and improves the processing quality and yield rate of the lens.

[0027] The upper knife rest 2 of this embodiment is provided with an upper heating block 21 and an upper blade 22 arranged on the upper heating block 21. The driving member 4 drives the lower blade 34 to move towards the upper blade 22 through the base 31, so that the lower blade 34 abuts against the upper blade 22. Specifically, the upper knife rest 2 is fixedly installed on the top of the frame body 1, the upper blade 22 is installed on the upper heating block 21, and the driving member 4 drives the lower blade 34 to move towards the upper blade 22 through the base 31, so that the lower blade 34 and the upper blade 22 are mutually abutted and closed. The upper heating block 21 and the lower heating block 33 respectively provide appropriate cutting temperatures for the upper blade 22 and the lower blade 34, which can improve the cutting efficiency and ensure good cutting quality.

[0028] An induction sheet 39 is provided on the outer side of the base 31 of this embodiment, and a photoelectric inductor 11 that cooperates with the induction sheet 39 is provided on the outer side of the frame body 1. Specifically, when the driving member 4 drives the lower tool rest 3 to approach or move away from the upper tool rest 2, the base 31 uses the induction sheet 39 to slide into the photoelectric inductor 11 and block the photoelectric signal, so that the driving member 4 stops operating, effectively limiting the up and down movement distance of the base 31 and preventing the base 31 from accidentally detaching from the frame body 1.

[0029] A slider 310 is provided on the base 31 of this embodiment, and a guide rail 12 that is slidably connected to the slider 310 is provided on the frame body 1. Specifically, the base 31 is slidably connected to the guide rail 12 through the slider 310, reducing the frictional resistance and improving the movement smoothness.

[0030] The driving member 4 of this embodiment includes a reduction gear 41, a servo motor 42 that is drivingly connected to the reduction gear 41, a coupling 43 provided at the output end of the reduction gear 41, a lead screw member 44 connected to the coupling 43, and a nut 45 that is screwed and sleeved on the outer side of the lead screw member 44, and the nut 45 is connected to the base 31. Specifically, the 750W servo motor 42 drives the reduction gear 41 to rotate, and the rotating reduction gear 41 drives the lead screw member 44 to rotate through the coupling 43, thereby driving the nut 45 to move along the length direction of the lead screw member 44, so that the base 31 moves up and down following the nut 45. Through the setting of the reduction gear 41, the output torque of the servo motor 42 is increased, ensuring that the nut 45 can make a smooth lifting action driven by the lead screw member 44, and the transmission efficiency is high.

[0031] Reinforcing ribs 13 are provided on both sides of the frame body 1 of this embodiment. Specifically, the reinforcing ribs 13 are symmetrically arranged on both sides of the frame body 1, effectively improving the bonding force between the reinforcing ribs 13 and the frame body 1, enhancing the overall structural stability of the frame body 1, and ensuring the normal and stable progress of the cutting work.

[0032] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. An automatic cutting mechanism for optical lenses, characterized in that: The utility model comprises a frame, an upper tool holder arranged on the frame, a lower tool holder movably arranged on the frame, and a driving member for driving the lower tool holder to approach or move away from the upper tool holder, wherein the lower tool holder comprises a base, an adjustment block arranged on the base, a lower heating block arranged on the adjustment block, a lower blade slidably arranged on the lower heating block, an adjustment slot arranged on the lower blade, and a connecting hole arranged on the lower heating block and used in conjunction with the adjustment slot, wherein the base is provided with a mounting hole, and the adjustment block is provided with an adjustment hole used in conjunction with the mounting hole.

2. The automatic cutting mechanism for optical lenses according to claim 1, characterized in that: The upper blade holder is provided with an upper heating block and an upper blade arranged on the upper heating block. The driving member drives the lower blade to move toward the direction close to the upper blade through the base, so that the lower blade contacts the upper blade.

3. The automatic cutting mechanism for optical lenses according to claim 1, characterized in that: The outer side of the base is provided with a sensing sheet, and the outer side of the frame is provided with a photoelectric sensor used in conjunction with the sensing sheet.

4. The automatic cutting mechanism for optical lenses according to claim 3, characterized in that: The base is provided with a sliding block, and the frame is provided with a guide rail slidably connected with the sliding block.

5. The automatic cutting mechanism for optical lenses according to claim 1, characterized in that: The driving member includes a reducer, a servo motor drivingly connected to the reducer, a coupling arranged at the output end of the reducer, a screw member connected to the coupling, and a nut threadedly sleeved on the outside of the screw member, and the nut is connected to the base.

6. The automatic cutting mechanism for optical lenses according to claim 1, characterized in that: Reinforcement ribs are arranged on both sides of the frame.

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