Optical lens precision three-axis fine tuning mechanism

Abstract

The utility model relates to the technical field of lens processing, in particular to an optical lens precision three-axis fine tuning mechanism, which comprises a first guide rail assembly, a second guide rail assembly, a third guide rail assembly, a shearing device and a clamping device, the clamping device is used for clamping an optical lens and is driven by the third guide rail assembly to move in the Y-axis direction of the first guide rail assembly, and the shearing device is driven by the second guide rail assembly to move in the Y-axis direction of the first guide rail assembly. The shearing device is close to the material clamping device and is used for shearing off the water gap of the optical lens clamped by the material clamping device. According to the utility model, automatic high-precision water gap shearing work is carried out on the lens, the operation is simple and convenient, the shearing precision is high, and the lens yield is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lens processing, in particular to a precise three-axis fine-tuning mechanism for an optical lens. Background Art

[0002] The lens is the main component of the camera equipment, which is mainly used to generate images. The existing lens mainly includes a lens barrel and a lens arranged on the lens barrel. Injection molded lenses are usually used in the optical field. Injection molded lenses are plastic particles that are injected through a mold by an injection molding machine. Usually, a lens mold contains multiple mold cavities, and multiple lenses can be molded by one injection molding. Since there are water outlets connecting the lenses together, the connected lenses need to be cut off from the water outlets separately for subsequent process production. However, the existing water outlet cutting work is mainly done manually, and the operation is cumbersome, complicated, time-consuming and labor-intensive. It is difficult to ensure good cutting accuracy, which can easily cause damage and scrapping of the lenses, affecting the lens yield. Utility Model Content

[0003] The purpose of the utility model is to provide a precise three-axis fine-tuning mechanism for optical lenses to address the deficiencies of the prior art, so as to realize automatic high-precision shearing of water outlets on lenses, which is simple and convenient to operate, has high shearing accuracy and improves the yield rate of lenses.

[0004] To achieve the above-mentioned purpose, the utility model provides a precision three-axis fine-tuning mechanism for an optical lens, comprising a first guide rail assembly, a second guide rail assembly and a third guide rail assembly spaced apart and arranged in parallel with the first guide rail assembly, a shearing device arranged on the second guide rail assembly, and a clamping device arranged on the third guide rail assembly, wherein the clamping device is used to clamp the optical lens, the clamping device is driven by the third guide rail assembly to move along the Y-axis direction of the first guide rail assembly, and the shearing device is driven by the second guide rail assembly to move along the Y-axis direction of the first guide rail assembly, so that the shearing device is close to the clamping device and cuts off the water outlet of the optical lens clamped by the clamping device.

[0005] Preferably, the shearing device includes a stand, a ball screw pair arranged on the stand, a servo motor connected to the ball screw pair, a first shearing seat and a second shearing seat movably arranged on the ball screw pair, and a first tool and a second tool respectively arranged on the first shearing seat and the second shearing seat, a fourth guide rail assembly is arranged between the first shearing seat and the stand, a fifth guide rail assembly is arranged between the second shearing seat and the stand, and the ball screw pair is used to drive the first shearing seat and the second shearing seat to approach or move away from each other, so that the first tool and the second tool are close to or away from each other and the clamping device.

[0006] Preferably, the shearing device also includes a first height adjustment seat, a sixth guide rail assembly is arranged between the first height adjustment seat and the vertical frame, a first locking plate and a first locking piece arranged on the first locking plate are arranged on the outer side of the vertical frame, a first connecting hole is arranged on the outer side of the first height adjustment seat, a plurality of first connecting holes are arranged at intervals along the height direction of the first height adjustment seat, and the first locking piece passes through the first locking plate and is connected to the first connecting hole.

[0007] Preferably, the clamping device comprises a bracket, a movable seat movably arranged on the bracket, a driving cylinder drivingly connected to the movable seat, and a clamping cylinder arranged on the movable seat, and the output end of the clamping cylinder is drivingly connected to a clamping arm.

[0008] Preferably, the clamping device also includes a second height adjustment seat, a seventh guide rail assembly is arranged between the second height adjustment seat and the bracket, a second locking plate and a second locking piece arranged on the second locking plate are arranged on the outer side of the bracket, a second connecting hole is arranged on the outer side of the second height adjustment seat, and a plurality of second connecting holes are arranged at intervals along the height direction of the second height adjustment seat, and the second locking piece passes through the second locking plate and is connected to the second connecting hole.

[0009] Preferably, a first differential head is disposed on the outer side of the first guide rail assembly, a second differential head is disposed on the outer side of the second guide rail assembly, and a third differential head is disposed on the outer side of the third guide rail assembly.

[0010] The beneficial effects of the utility model include: realizing the work of automatically cutting off the water outlet of the lens with high precision, simple and convenient operation, high cutting precision, and improving the yield rate of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 This is a schematic diagram of the structure of the shearing device of the utility model.

[0013] Figure 3 It is a schematic structural diagram of the material clamping device of the utility model.

[0014] Figure 4 This is a schematic structural diagram of the material clamping device of the utility model from another angle.

[0015] Figure 5 It is a structural schematic diagram of the first guide rail assembly, the second guide rail assembly, and the third guide rail assembly of the utility model.

[0016] Reference numerals include:

[0017] 1——First guide rail assembly 2——Second guide rail assembly 3——Third guide rail assembly

[0018] 4——Shearing device 41——Stand 42——Ball screw pair

[0019] 43——Servo motor 44——First shearing seat 45——Second shearing seat

[0020] 46——first tool 47——second tool 48——fourth guide rail assembly

[0021] 49——Fifth guide rail assembly 410——First height adjustment seat 411——Sixth guide rail assembly 412——first locking plate 413——first locking member 414——first connecting hole

[0022] 5——Clamping device 51——Bracket 52——Moving seat

[0023] 53——driving cylinder 54——clamping cylinder 55——clamping arm

[0024] 56——Second height adjustment seat 57——Seventh guide rail assembly 58——Second locking plate

[0025] 59——Second locking member 510——Second connecting hole

[0026] 6——first differential head 7——second differential head 8——third differential head DETAILED DESCRIPTION

[0027] The utility model is described in detail below with reference to the accompanying drawings.

[0028] like Figures 1 to 5 As shown, the utility model is a precision three-axis fine-tuning mechanism for an optical lens, comprising a first guide rail assembly 1, a second guide rail assembly 2 and a third guide rail assembly 3 which are spaced and arranged in parallel with the first guide rail assembly 1, a shearing device 4 arranged on the second guide rail assembly 2 and a clamping device 5 arranged on the third guide rail assembly 3, wherein the clamping device 5 is used for clamping the optical lens, the clamping device 5 is driven by the third guide rail assembly 3 to move along the Y-axis direction of the first guide rail assembly 1, and the shearing device 4 is driven by the second guide rail assembly 2 to move along the Y-axis direction of the first guide rail assembly 1, so that the shearing device 4 is close to the clamping device 5 and cuts off the water outlet of the optical lens clamped by the clamping device 5.

[0029] This mechanism is a precision three-axis fine-tuning mechanism designed for the shearing of the water outlet of aspheric plastic optical lenses. The first guide rail assembly 1, the second guide rail assembly 2, and the third guide rail assembly 3 all use the precision cross roller guide rails of the existing technology as slide rails. They have a compact structure and strong structural rigidity, are easy to install and use, have a long service life, and have low rolling friction. The adjustment accuracy can reach the micron level, pre-load installation is allowed, and the structural adjustment range is large. The first guide rail assembly 1 drives the second guide rail assembly 2 and the third guide rail assembly 3 to move and adjust their positions along the X-axis direction, the clamping device 5 is used to clamp the optical lens, the clamping device 5 is driven by the third guide rail assembly 3 to move and adjust its position along the Y-axis direction of the first guide rail assembly 1, and the shearing device 4 is driven by the second guide rail assembly 2 to move and adjust its position along the Y-axis direction of the first guide rail assembly 1. This structural design allows the shearing device 4 and the clamping device 5 to adjust their working positions independently, and the shearing device 4 can be roughly adjusted to the water outlet position of the lens first, and then the lens clamping position of the clamping device 5 can be adjusted, and the shearing device 4 and the clamping device 5 can also be adjusted in height, so as to adjust the water outlet shearing height and the lens clamping height, which is conducive to completing the lens water outlet shearing work, the adjustment is smooth and error-free, the product debugging cycle is short, convenient and fast, the water outlet shearing precision is high, and the shearing efficiency and shearing precision are significantly improved. The utility model realizes the automatic high-precision water outlet shearing work of the lens, the operation is simple and convenient, the shearing precision is high, and the lens yield rate is improved.

[0030] The shearing device 4 of this embodiment includes a stand 41, a ball screw pair 42 arranged on the stand 41, a servo motor 43 connected to the ball screw pair 42, a first shearing seat 44 and a second shearing seat 45 movably arranged on the ball screw pair 42, and a first tool 46 and a second tool 47 respectively arranged on the first shearing seat 44 and the second shearing seat 45, a fourth guide rail assembly 48 is arranged between the first shearing seat 44 and the stand 41, and a fifth guide rail assembly 49 is arranged between the second shearing seat 45 and the stand 41, and the ball screw pair 42 is used to drive the first shearing seat 44 and the second shearing seat 45 to approach each other or move away from each other, so that the first tool 46 and the second tool 47 are close to each other or move away from each other.

[0031] Specifically, as a preferred embodiment, the ball screw pair 42 specifically adopts a C5-grade forward and reverse bidirectional grinding screw, that is, a bidirectional ball screw, using a screw rod with a left-handed screw thread at one end and a right-handed screw thread at the other end, so that the two nuts can realize a structure of moving in opposite directions at the same time. Since the specific structure and working principle of the bidirectional ball screw are both existing technologies, they are not repeated here. The ball screw pair 42 uses a servo motor 43 as a power source. Compared with the ordinary cylinder shearing structure, this structure has a faster shearing speed and an adjustable process. The shearing process is a quantifiable data parameter, which is intuitive and easy to adjust, so that the repeated positioning accuracy of the first tool 46 and the second tool 47 can reach 0.005mm. The servo motor 43 drives the first shearing seat 44 and the second shearing seat 45 to move closer to or away from each other through the ball screw pair 42, so that the first tool 46 and the second tool 47 move close to the clamping device 5 and automatically cut the water outlet of the lens. A fourth guide rail assembly 48 is arranged between the first shearing seat 44 and the stand 41, and a fifth guide rail assembly 49 is arranged between the second shearing seat 45 and the stand 41. The fourth guide rail assembly 48 and the fifth guide rail assembly 49 both use the precision cross roller guide rails of the prior art as slide rails, which have a compact structure, strong structural rigidity, and low rolling friction, thereby ensuring that the first shearing seat 44 and the second shearing seat 45 can be lifted and lowered smoothly, thereby improving the lens cutting yield.

[0032] The shearing device 4 of this embodiment also includes a first height adjustment seat 410, a sixth guide rail assembly 411 is arranged between the first height adjustment seat 410 and the vertical frame 41, a first locking plate 412 and a first locking member 413 arranged on the first locking plate 412 are arranged on the outer side of the vertical frame 41, a first connecting hole 414 is arranged on the outer side of the first height adjustment seat 410, a plurality of first connecting holes 414 are arranged, and the plurality of first connecting holes 414 are arranged at intervals along the height direction of the first height adjustment seat 410, and the first locking member 413 passes through the first locking plate 412 and is connected to the first connecting hole 414. Specifically, the sixth guide rail assembly 411 also uses a precision cross roller guide rail as a slide rail, and the first locking piece 413 uses a bakelite handle as a locking tool, which can make the position fixation faster and more convenient. The entire stand 41 moves up and down relative to the first height adjustment seat 410 through the sixth guide rail assembly 411. When the stand 41 moves to the required height position, the first locking piece 413 is used to pass through the first locking plate 412 and is connected and fixed to the first connecting hole 414. The first locking piece 413 is rotated and tightened, and then the stand 41 is fixed on the first height adjustment seat 410, so as to achieve fine adjustment of the height position of the shear nozzle of the shearing device 4 according to actual work needs, and the adjustment effect is good.

[0033] The clamping device 5 of this embodiment includes a bracket 51, a moving seat 52 movably arranged on the bracket 51, a driving cylinder 53 drivingly connected to the moving seat 52, and a clamping cylinder 54 arranged on the moving seat 52, and the output end of the clamping cylinder 54 is drivingly connected to a clamping arm 55. Specifically, the clamping cylinder 54 drives the clamping arm 55 to close and clamp the fixed lens, and the driving cylinder 53 drives the clamping cylinder 54 to move toward the shearing device 4 through the moving seat 52, so that the shearing device 4 can perform the gate shearing work on the lens.

[0034] The clamping device 5 of this embodiment also includes a second height adjustment seat 56, a seventh guide rail assembly 57 is arranged between the second height adjustment seat 56 and the bracket 51, a second locking plate 58 and a second locking piece 59 arranged on the second locking plate 58 are arranged on the outer side of the bracket 51, a second connecting hole 510 is arranged on the outer side of the second height adjustment seat 56, and a plurality of second connecting holes 510 are arranged at intervals along the height direction of the second height adjustment seat 56, and the second locking piece 59 passes through the second locking plate 58 and is connected to the second connecting hole 510. Specifically, the seventh guide rail assembly 57 uses a precision cross roller guide rail as a slide rail, and the entire bracket 51 moves up and down relative to the second height adjustment seat 56 through the seventh guide rail assembly 57. When the bracket 51 moves to the required height position, the second locking piece 59 is used to pass through the second locking plate 58 and connect to the second connecting hole 510, and the second locking piece 59 is rotated and tightened to fix the bracket 51 on the second height adjustment seat 56, so as to realize fine adjustment of the height position of the lens clamped by the clamping device 5 according to actual work requirements, and the adjustment effect is good.

[0035] In this embodiment, a first differential head 6 is arranged on the outside of the first guide rail assembly 1, a second differential head 7 is arranged on the outside of the second guide rail assembly 2, and a third differential head 8 is arranged on the outside of the third guide rail assembly 3. Specifically, the first differential head 6 is rotated so that the probe of the first differential head 6 abuts against and fits the first guide rail assembly 1, the second differential head 7 is rotated so that the probe of the second differential head 7 abuts against and fits the second guide rail assembly 2, and the third differential head 8 is rotated so that the probe of the third differential head 8 abuts against and fits the third guide rail assembly 3, so as to better and accurately fine-tune the positions of the first guide rail assembly 1, the second guide rail assembly 2, and the third guide rail assembly 3. The differential head is used as a precision adjustment tool, and the positioning adjustment is accurate. The adjustment distance is 0.01mm per rotation, and the accuracy can reach 0.005mm. In addition, the tension spring is used as the return power to eliminate the adjustment gap.

[0036] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A precision three-axis fine-tuning mechanism for an optical lens, characterized in that: It includes a first guide rail assembly, a second guide rail assembly and a third guide rail assembly spaced apart and arranged in parallel with the first guide rail assembly, a shearing device arranged on the second guide rail assembly, and a clamping device arranged on the third guide rail assembly, wherein the clamping device is used to clamp the optical lens, the clamping device is driven by the third guide rail assembly to move along the Y-axis direction of the first guide rail assembly, and the shearing device is driven by the second guide rail assembly to move along the Y-axis direction of the first guide rail assembly, so that the shearing device is close to the clamping device and cuts off the water outlet of the optical lens clamped by the clamping device.

2. The optical lens precision three-axis fine-tuning mechanism according to claim 1, characterized in that: The shearing device includes a stand, a ball screw pair arranged on the stand, a servo motor connected to the ball screw pair, a first shearing seat and a second shearing seat movably arranged on the ball screw pair, and a first tool and a second tool respectively arranged on the first shearing seat and the second shearing seat, a fourth guide rail assembly is arranged between the first shearing seat and the stand, a fifth guide rail assembly is arranged between the second shearing seat and the stand, and the ball screw pair is used to drive the first shearing seat and the second shearing seat to approach or move away from each other, so that the first tool and the second tool are close to or away from each other. Clamping device.

3. The optical lens precision three-axis fine-tuning mechanism according to claim 2, characterized in that: The shearing device also includes a first height adjustment seat, a sixth guide rail assembly is arranged between the first height adjustment seat and the vertical frame, a first locking plate and a first locking piece arranged on the first locking plate are arranged on the outer side of the vertical frame, a first connecting hole is arranged on the outer side of the first height adjustment seat, and a plurality of first connecting holes are arranged at intervals along the height direction of the first height adjustment seat, and the first locking piece passes through the first locking plate and is connected to the first connecting hole.

4. The optical lens precision three-axis fine-tuning mechanism according to claim 1, characterized in that: The clamping device comprises a bracket, a movable seat movably arranged on the bracket, a driving cylinder drivingly connected to the movable seat, and a clamping cylinder arranged on the movable seat, wherein the output end of the clamping cylinder is drivingly connected to a clamping arm.

5. The optical lens precision three-axis fine-tuning mechanism according to claim 4, characterized in that: The clamping device also includes a second height adjustment seat, a seventh guide rail assembly is arranged between the second height adjustment seat and the bracket, a second locking plate and a second locking piece arranged on the second locking plate are arranged on the outer side of the bracket, a second connecting hole is arranged on the outer side of the second height adjustment seat, and a plurality of second connecting holes are arranged at intervals along the height direction of the second height adjustment seat, and the second locking piece passes through the second locking plate and is connected to the second connecting hole.

6. The optical lens precision three-axis fine-tuning mechanism according to claim 1, characterized in that: A first differential head is arranged on the outer side of the first guide rail assembly, a second differential head is arranged on the outer side of the second guide rail assembly, and a third differential head is arranged on the outer side of the third guide rail assembly.

Images