An in-line heated lens cell assembly apparatus, assembly line and method

Abstract

The present application relates to the technical field of optical lens assembly, and particularly relates to an online heating type lens assembly device, an assembly line and a method. The device comprises a lens barrel carrying line body, a lens switching feeding mechanism, a lens carrying mechanism and a pressing mechanism. The lens barrel carrying line body is used for stepwise transferring the lens barrel on a blanking station of a front sequence device provided with a heating type bearing seat, a lens barrel feeding jig, an assembly jig and the pressing mechanism. The lens switching feeding mechanism is used for alternately switching lens feed trays. The lens carrying mechanism is used for transferring the lenses in the lens feed trays into the lens barrels on the assembly jig, so as to realize the assembly of the lens barrels and the lenses. The pressing mechanism is used for pressing the lenses assembled in the lens barrels. The lens barrels of the device are in a thermal expansion state at each station, online heating of the lens barrels is realized, and through the design of the lens switching feeding mechanism and the synchronous work of the lens barrel feeding, lens assembly and lens pressing, the production efficiency and the assembly yield are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical lens assembly, in particular to an online heating type lens assembly equipment, an assembly pipeline and a method. BACKGROUND

[0002] An optical lens is a precision device that uses the principles of refraction, reflection, etc. of light to control the propagation path of light, and is widely used in various fields that require imaging, focusing, lighting or optical signal processing. Optical lens assembly is to stack and assemble a plurality of lenses and spacers into a lens barrel, and then lock an outer pressure ring or an inner pressure ring at the end of the lens barrel. The outer pressure ring or the inner pressure ring is used to press and fix the plurality of lenses and spacers in the lens barrel, thereby completing the assembly of the optical lens.

[0003] The optical lens is a precision device, and the assembly size of the inner diameter of the lens barrel and the outer diameter of the lens requires high precision, and the assembly gap between the inner wall of the lens barrel and the outer edge of the lens is small. If there is a positional deviation of the lens relative to the lens barrel during assembly, the lens may be stuck and not assembled in place, resulting in a low yield of automatic assembly of the optical lens.

[0004] In order to improve the yield of assembly, our company previously designed a scheme of heating the lens barrel by using a heating disc, which is disclosed in the publication No. CN116107052B. Due to thermal expansion, the assembly gap between the lens barrel and the lens is increased after heating, so that the lens is not easily stuck during assembly and is more easily assembled into the lens barrel. However, the heating disc of the scheme is arranged on a linear module and cannot withstand large pressure, so that a pressing mechanism is not designed to press the assembled lens, resulting in that individual lenses may not be assembled in place due to positional deviation or inclination. In addition, when the lens tray is replaced after being used up, the empty lens tray needs to be sent into the stock bin first, and then the stock bin needs to be raised to the position where the lens tray loaded with lenses is docked with the lens moving assembly. Then, the lens moving assembly takes out the lens tray loaded with lenses. It takes a long time to replace the lens tray. Moreover, the working efficiency of such a single machine table assembly equipment is relatively low, and it cannot meet the requirements of customers who require high efficiency. SUMMARY

[0005] The present application aims to provide an online heating type lens assembly equipment, which comprises:

[0006] A lens barrel conveying line body, which further comprises a transverse moving mechanism moving reciprocally along the X-axis direction, and a lens barrel feeding jig, an assembly jig and a pressing mechanism are arranged at one side of the transverse moving mechanism in intervals. When the transverse moving mechanism moves reciprocally, it is used to stepwise transfer the lens barrel among the lens barrel feeding jig, the assembly jig and the pressing mechanism of the previous equipment, and the lens barrel feeding jig, the assembly jig and the pressing mechanism are all provided with a heating type bearing seat.

[0007] The lens switching feeding mechanism comprises two supporting plates and a driver for driving the two supporting plates to move alternately along the X-axis direction, and at least one lens tray for containing lenses is placed on the supporting plates;

[0008] The lens transferring mechanism is arranged across the lens switching feeding mechanism and the lens barrel transferring line along the Y-axis direction, and is used for transferring the lenses in the lens tray to the lens barrels on the assembling jig to realize the assembling of the lens barrels and the lenses.

[0009] The pressing mechanism is used for pressing the lenses assembled in the lens barrels.

[0010] In a specific embodiment, the horizontal moving mechanism comprises a first sliding rail arranged on the assembling workbench along the X-axis direction, a lower horizontal plate is slidingly arranged on the first sliding rail, a first electric screw rod is arranged on the assembling workbench and is used for driving the lower horizontal plate to slide, a first lifting cylinder is arranged on the lower horizontal plate, a piston end of the first lifting cylinder is provided with an upper horizontal plate, the upper horizontal plate is provided with a plurality of parallel cylinder clamping jaws, and the plurality of parallel cylinder clamping jaws correspond to the lens barrel feeding jig, the assembling jig and the pressing mechanism one by one.

[0011] In a specific embodiment, the heating type bearing seat comprises a heating block, a cushion block, a heat dissipation block and a fan frame which are sequentially connected from top to bottom, the top of the heating block is provided with a containing groove for placing a lens barrel, and the bottom of the heat dissipation block is provided with a plurality of heat dissipation fins; the fan frame is a square tube frame, a heat dissipation fan is arranged at a square tube hole of the square tube frame, and exhaust air notches are arranged on the four peripheral side walls of the square tube frame.

[0012] In a specific embodiment, the driver is an electric synchronous belt, the electric synchronous belt is arranged on a mounting plate, and the mounting plate is fixed on the assembling workbench; the mounting plate is provided with a second sliding rail and a third sliding rail which are slidingly matched with the two supporting plates respectively, and the two supporting plates are fixed with two side edges of the electric synchronous belt respectively.

[0013] In a specific embodiment, the pressing mechanism comprises a base arranged on the assembling workbench, the heating type bearing seat is arranged on the top of the base, a vertical plate is arranged on one side wall of the base, a pressing cylinder is arranged on the vertical plate, a pressing rod moving along the Z-axis direction is arranged at a piston end of the pressing cylinder; a first grating reading head is arranged on the vertical plate, a first grating ruler is arranged at the piston end of the pressing cylinder, after the pressing rod presses the lenses assembled in the lens barrel, the position data of the first grating ruler is read by the first grating reading head, and whether the lenses are pressed in place is judged in combination with the design height of the lenses and the design height of the lens barrel assembly surface.

[0014] In a specific embodiment, the lens height measuring mechanism is further included, which comprises a lens reference seat and a lens height measuring assembly. The lens reference seat is arranged between the lens switching and feeding mechanism and the lens barrel carrying line body. The lens height measuring assembly is arranged on the lens carrying mechanism. The lens carrying mechanism first transfers the lenses in the lens tray to the lens reference seat, and then transfers the lenses to the lens barrel on the assembly jig after measuring the height of the lenses by the height measuring assembly. After the lenses are pressed tightly in the lens barrel by the pressing rod, the position data of the first grating ruler is read by the first grating reading head, and whether the lenses are pressed in place is judged by combining the measured height of the lenses and the designed height of the lens assembly surface.

[0015] In a specific embodiment, the lens carrying mechanism comprises a gantry arranged along the Y-axis direction, and a Y-axis double-mover linear module arranged on the gantry. A first Z-axis linear module and a second grating ruler are arranged on a first mover of the Y-axis double-mover linear module. A first suction pen and a second grating reading head are arranged on a driving plate of the first Z-axis linear module. The second grating ruler and the second grating reading head constitute the lens height measuring assembly. A second Z-axis linear module is arranged on a second mover of the Y-axis double-mover linear module. A second suction pen is arranged on a driving plate of the second Z-axis linear module. The Y-axis double-mover linear module first transfers the lenses in the lens tray to the lens reference seat by the first mover, and then transfers the lenses to the lens barrel on the assembly jig by the second mover after measuring the height of the lenses by the height measuring assembly.

[0016] In a specific embodiment, the lens height measuring and positioning assembly is further included, which comprises a cylinder alignment clamp and a first lower camera. The cylinder alignment clamp is arranged on the driving plate of the first Z-axis linear module and located directly below the first suction pen, and is used for aligning the lenses sucked by the first suction pen. The first lower camera is arranged between the lens switching and feeding mechanism and the lens reference seat. The lens reference seat is arranged on a second electric screw driven along the X-axis direction. The first mover first transfers the aligned lenses to above the first lower camera. The first lower camera obtains the position coordinates of the lenses. The first mover and the second electric screw adjust the relative positions of the lens reference seat and the first mover according to the obtained position coordinates of the lenses, so as to accurately place the lenses on the lens reference seat.

[0017] In a specific embodiment, the lens assembly detection positioning assembly further comprises an upper camera, a second lower camera and an NG bin; the upper camera is arranged on the second mover, the second lower camera is arranged between the lens reference seat and the assembly jig, the assembly jig is arranged on a third electric screw driven in the X-axis direction, and the NG bin is located below the movement track of the second mover; the upper camera is used for appearance detection of the upper surface of the lens on the lens reference seat; the second lower camera is used for appearance detection of the lower surface of the lens and obtains the position coordinates of the lens moved above; the second mover and the third electric screw adjust the relative positions of the assembly jig and the second mover according to the obtained position coordinates of the lens, so as to accurately assemble the lens into the lens barrel; and the NG bin is used for collecting lenses that fail in appearance detection.

[0018] In a specific embodiment, the lens barrel feeding jig comprises a fixed seat arranged on an assembly workbench, and a heating type bearing seat arranged on the top of the fixed seat; a height measuring plate is arranged on one side wall of the fixed seat, a height measuring cylinder is arranged on the height measuring plate, and a height measuring head is arranged on the piston end of the height measuring cylinder and moves in the Z-axis direction; a third grating reading head is arranged on the height measuring plate, and a third grating ruler is arranged on the piston end of the height measuring cylinder; when the height measuring head driven by the height measuring cylinder is lowered to contact the lens assembly surface of the lens barrel on the heating type bearing seat, the third grating reading head reads the position data of the third grating ruler, so as to obtain the measured height of the lens assembly surface of the lens barrel; after the lens in the lens barrel is pressed tightly by the pressing rod, the position data of the first grating ruler is read by the first grating reading head, and whether the lens is pressed in place is judged in combination with the measured height of the lens and the height of the lens assembly surface of the lens barrel.

[0019] The application further provides a lens barrel assembly pipeline, which comprises one or more online heating type lens barrel assembly devices arranged in sequence; in the plurality of online heating type lens barrel assembly devices, the horizontal movement mechanisms of two adjacent online heating type lens barrel assembly devices are connected together, all the connected horizontal movement mechanisms are driven by a same first electric screw, and the first electric screw is arranged on the assembly workbench of one of the online heating type lens barrel assembly devices.

[0020] In a specific embodiment, the lens barrel feeding jig further comprises:

[0021] A lens barrel feeding device is arranged upstream of the plurality of online heating type lens barrel assembly devices, and is used for transferring the lens barrels placed in a lens barrel tray to a preheating tray for preheating, and then transferring the lens barrels to a feeding station; the horizontal movement mechanism of the online heating type lens barrel assembly device connected with the lens barrel feeding device transfers the lens barrels on the feeding station to the lens barrel feeding jig.

[0022] An outer pressure ring locking device is arranged downstream of the plurality of online heating lens barrel assembly devices, and is used for locking and fixing the outer pressure ring at the end of the lens, and pressing the lens barrel to assemble the lens;

[0023] A material receiving device is arranged downstream of the outer pressure ring locking device, and is used for transferring the lens with the locked outer pressure ring to a finished product tray.

[0024] The application also provides a lens assembly method, which uses the online heating lens barrel assembly device to assemble the lens barrel and the lens.

[0025] The application has at least the following beneficial effects:

[0026] 1. By designing a separate pressing mechanism, further pressing treatment can be realized on the assembled lens, so as to ensure that the lens is assembled in place.

[0027] 2. By using a reciprocating horizontal moving mechanism to step by step carry the lens barrel, the lens barrel feeding, lens assembly and lens pressing can be realized synchronously, and the production efficiency is greatly improved.

[0028] 3. By designing a lens switching feeding mechanism, the lens tray is switched alternately, and the switching efficiency of the lens tray is greatly improved.

[0029] 4. The device uses a pipeline type horizontal moving mechanism, and the horizontal moving mechanism can move to the feeding station of the previous device, which is convenient for assembly line use, so that the assembly efficiency is greatly improved.

[0030] 5. By arranging the heating type bearing seat on the lens barrel feeding jig, the assembly jig and the pressing mechanism, the lens barrel is in a thermal expansion state at each station, online heating of the lens barrel is realized, the lens can be assembled in place, and the assembly yield is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a whole structure diagram of an embodiment of the application;

[0032] Figure 2 It is an assembly structure diagram of a lens barrel carrying pipeline in an embodiment of the application;

[0033] Figure 3 It is an assembly structure diagram of a horizontal moving mechanism in an embodiment of the application;

[0034] Figure 4 It is an assembly structure diagram of a heating type bearing seat in an embodiment of the application;

[0035] Figure 5 It is Figure 4 It is another perspective assembly structure diagram of the heating type bearing seat in an embodiment of the application;

[0036] Figure 6 Assembly structure diagram of lens switching feed mechanism in one embodiment of the present application;

[0037] Figure 7 Assembly structure diagram of pressing mechanism in one embodiment of the present application;

[0038] Figure 8 Assembly structure diagram of first mover in one embodiment of the present application;

[0039] Figure 9 Assembly structure diagram of second mover in one embodiment of the present application;

[0040] Figure 10 Assembly structure diagram of lens reference seat and second electric screw in one embodiment of the present application;

[0041] Figure 11 Assembly structure diagram of lens barrel feeding jig in one embodiment of the present application;

[0042] Figure 12 Assembly structure diagram of lens barrel feeding device in another embodiment of the present application.

[0043] : assembly workbench 1, lens barrel carrying line body 2, transverse moving mechanism 21, first sliding rail 211, lower transverse plate 212, first lifting cylinder 213, upper transverse plate 214, parallel cylinder clamping jaw 215, lens barrel feeding jig 22, fixing seat 221, height measuring plate 222, height measuring cylinder 223, height measuring head 224, third grating ruler 225, third grating reading head 226, assembly jig 23, heating type bearing seat 24, heating block 241, containing groove 2411, air inlet pipe 2412, air outlet hole 2413, thermocouple sensor 2414, cushion block 242, heat dissipation block 243, heat dissipation fin 2431, fan frame 244, heat dissipation fan 2441, air outlet gap 2442, transition jig 25, lens switching feeding mechanism 3, supporting plate 31, driver 32, mounting plate 33, second sliding rail 34, third sliding rail 35, lens carrying mechanism 4, gantry 41, Y-axis double-mover linear module 42, first mover 421, first Z-axis linear module 4211, second grating ruler 4212, first suction pen 4213, second grating reading head 4214, second mover 422, second Z-axis linear module 4221, second suction pen 4222, pressing mechanism 5, base 51, vertical plate 52, pressing cylinder 53, pressing rod 54, first grating ruler 55, first grating reading head 56, lens reference seat 61, lens height measuring assembly 62, cylinder alignment clamping jaw 71, first lower camera 72, second electric screw 73, upper camera 81, second lower camera 82, NG material box 83, third electric screw 84, lens barrel feeding equipment 100, lens barrel feeding bottom plate 1001, lifting type stock bin 1002, lens barrel Y-axis linear module 1003, lens barrel carrying X-axis linear module 1004, lens barrel preheating Y-axis module 1005, preheating material disc 10051, feeding jig 1006. DETAILED DESCRIPTION

[0044] In order to enable the personnel in the technical field to better understand the technical scheme of the online heating type lens assembly device provided by the present application, the technical scheme of the device will be clearly and completely described below in combination with specific embodiments and drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the personnel in the field without making creative efforts should belong to the protection scope of the present application. Embodiment 1

[0045] Please refer to Figure 1 The online heating type lens assembly device provided by the present application comprises a lens barrel carrying line body 2, a lens switching feeding mechanism 3, a lens carrying mechanism 4 and a pressing mechanism 5 which are arranged on an assembly workbench 1.

[0046] Please refer to Figure 2, the lens barrel carrying line body 2 further comprises a transverse moving mechanism 21 reciprocating along the X-axis direction, and the transverse moving mechanism 21 is provided with a lens barrel loading jig 22, a transition jig 25, an assembling jig 23 and the pressing mechanism 5 at one side in intervals, and when the transverse moving mechanism 21 reciprocates, it is used for stepwise transferring the lens barrel among the unloading station of the previous equipment, the lens barrel loading jig 22, the transition jig 25, the assembling jig 23 and the pressing mechanism 5.

[0047] Please refer to Figure 1 and Figure 3 , the transverse moving mechanism 21 comprises a first sliding rail 211 provided on the assembling workbench 1 along the X-axis direction, and a lower cross plate 212 is slidingly arranged on the first sliding rail 211, and the assembling workbench 1 is provided with a first electric screw rod (not shown in the figure) for driving the lower cross plate 212 to slide, and a first lifting cylinder 213 is arranged on the lower cross plate 212, and a piston end of the first lifting cylinder 213 is provided with an upper cross plate 214, and the upper cross plate 214 is provided with a plurality of parallel cylinder clamping jaws 215, and the plurality of parallel cylinder clamping jaws 215 correspond to the lens barrel loading jig 22, the transition jig 25, the assembling jig 23 and the pressing mechanism 5 one by one.

[0048] When the transverse moving mechanism 21 reciprocates, firstly, the plurality of parallel cylinder clamping jaws 215 respectively clamp the lens barrels on the unloading station of the previous equipment, the lens barrel loading jig 22 and the assembling jig 23; secondly, the upper cross plate 214 and the plurality of parallel cylinder clamping jaws 215 are lifted together by the first lifting cylinder 213, so that the lens barrels are suspended; thirdly, the lower cross plate 212 is driven to move towards one side of the pressing mechanism 5 by the first electric screw rod, so that each lens barrel is located above the lens barrel loading jig 22, the transition jig 25, the assembling jig 23 and the pressing mechanism 5; then, the upper cross plate 214 and the plurality of parallel cylinder clamping jaws 215 are lowered together by the first lifting cylinder 213, so that each lens barrel is placed on the lens barrel loading jig 22, the transition jig 25, the assembling jig 23 and the pressing mechanism 5; then, the upper cross plate 214 and the plurality of parallel cylinder clamping jaws 215 are lifted together by the first lifting cylinder 213, and the lower cross plate 212 is driven to move towards the unloading station of the previous equipment by the first electric screw rod, so that the plurality of parallel cylinder clamping jaws 215 are located above the unloading station of the previous equipment, the lens barrel loading jig 22, the transition jig 25 and the assembling jig 23; then, the upper cross plate 214 and the plurality of parallel cylinder clamping jaws 215 are lowered together by the first lifting cylinder 213, and the plurality of parallel cylinder clamping jaws 215 clamp the lens barrels on the unloading station of the previous equipment, the lens barrel loading jig 22, the transition jig 25 and the assembling jig 23; finally, the above-mentioned actions are repeated to realize the reciprocating movement of the transverse moving mechanism 21, and then the stepwise transfer of the lens barrel is realized.

[0049] It should be noted that the transition fixture 25 and its corresponding parallel cylinder clamping jaws 215 can be provided according to the needs of the production rhythm, and the positions can be adjusted as needed. In some production rhythm conditions, the transition fixture 25 can also not be provided.

[0050] Please refer to Figure 4 and Figure 5 The barrel loading fixture 22, the transition fixture 25, the assembly fixture 23 and the pressing mechanism 5 are all provided with a heating type bearing seat 24. By providing the heating type bearing seat 24, the barrel is in a thermal expansion state at each station, realizing online heating of the barrel, ensuring that the lens can be assembled in place, and ensuring the assembly yield rate. The heating type bearing seat 24 specifically includes a heating block 241, a pad block 242, a heat dissipation block 243 and a fan frame 244 connected in sequence from top to bottom. The top of the heating block 241 is provided with a containing groove 2411 for placing the barrel. The bottom of the heat dissipation block 243 is provided with a plurality of heat dissipation fins 2431. The fan frame 244 is a square tube frame. The square tube hole of the square tube frame is provided with a heat dissipation fan 2441, and the four peripheral side walls of the square tube frame are provided with exhaust gaps 2442. This heating type bearing seat 24 adopts a structure combining passive heat dissipation of the heat dissipation fins 2431 and active heat dissipation of the heat dissipation fan 2441, greatly improving the flexibility and efficiency of temperature regulation.

[0051] To further quickly and flexibly adjust the temperature of the heating type bearing seat 24, the heating block 241 is also provided with an air inlet pipe 2412 and an air outlet hole 2413. The inside of the heating block is provided with an air channel that connects the air inlet pipe 2412 and the air outlet hole 2413. To facilitate accurate and real-time monitoring of the heating temperature of the heating block 241, the heating block 241 is also provided with a thermocouple sensor 2414. The heating block 241 adopts an existing structure with a built-in ceramic or graphite sheet heating structure.

[0052] Please refer to Figure 6 The lens switching and feeding mechanism 3 includes two supporting plates 31 and a driver 32 driving the two supporting plates 31 to move alternately along the X-axis direction. At least one lens tray for holding lenses is placed on each supporting plate 31. The driver 32 is an electric synchronous belt, which is arranged on a mounting plate 33 fixed on the assembly workbench 1. The mounting plate 33 is provided with a second sliding rail 34 and a third sliding rail 35 that respectively slide with the two supporting plates 31. The two supporting plates 31 are fixed to the two sides of the electric synchronous belt, and one of the supporting plates 31 can pass under the other supporting plate 31, so as to realize the alternating movement of the two supporting plates 31 driven by the electric synchronous belt, realize the alternating switching of the lens trays, and improve the efficiency of switching the lens trays. The design of the alternating movement structure in which one supporting plate 31 passes under the other supporting plate 31 makes the lens switching and feeding mechanism 3 occupy a small horizontal area of the assembly workbench 1, and the overall structure of the equipment is more compact.

[0053] It should be noted that the switching lens tray mentioned here can be two lens trays on the tray 31, and the same lens is placed in the lens tray. When the lens in the lens tray on one of the trays 31 is consumed, the lens tray containing the lens on the other tray 31 is switched to the bottom of the lens carrying mechanism 4 for use by the device, and the consumed lens tray is manually replaced with a new lens tray containing lenses. It can also be that the two trays 31 contain different lenses, and by switching the lens tray back and forth, two or even more lenses can be assembled on the device.

[0054] The lens carrying mechanism 4 is across the lens switching supply mechanism 3 and the lens barrel carrying line 2 along the Y-axis direction, and is used to transfer the lens in the lens tray to the lens barrel on the assembly jig 23, so as to realize the assembly of the lens barrel and the lens. In this embodiment, the lens carrying mechanism 4 can be realized by using the existing single-action linear module carrying structure.

[0055] Please refer to Figure 7 The pressing mechanism 5 is used to press the lens assembled in the lens barrel, which specifically includes a base 51 provided on the assembly workbench 1, a heating type bearing seat 24 provided on the top of the base 51, a vertical plate 52 provided on one side wall of the base 51, a pressing cylinder 53 provided on the vertical plate 52, and a pressing rod 54 provided on the piston end of the pressing cylinder 53 and moving along the Z-axis direction. A first grating reading head 56 is provided on the vertical plate 52, and a first grating ruler 55 is provided on the piston end of the pressing cylinder 53. After the pressing rod 54 presses the lens assembled in the lens barrel, the position data of the first grating ruler 55 is read by the first grating reading head 56, and the design height of the lens and the design height of the lens barrel assembly surface are combined to determine whether the lens is pressed into place.

[0056] It should be noted that whether the lens is pressed into place is determined by the built-in algorithm of the system software of the device, which is a very mature existing technology and will not be described here. Embodiment 2:

[0057] Please refer to Figure 1 and Figure 8In comparison with Embodiment 1, the embodiment further comprises a lens height measuring mechanism, which comprises a lens reference seat 61 and a lens height measuring assembly 62. The lens reference seat 61 is arranged between the lens switching and feeding mechanism 3 and the lens barrel carrying line 2, and the lens height measuring assembly 62 is arranged on the lens carrying mechanism 4. The lens carrying mechanism 4 first transfers the lens in the lens tray to the lens reference seat 61, and then transfers the lens to the lens barrel on the assembly jig 23 after measuring the height of the lens by the lens height measuring assembly 62. After the lens is pressed tightly in the lens barrel by the pressing rod 54, the position data of the first grating ruler 55 is read by the first grating reading head 56, and the measured height of the lens and the designed height of the lens barrel assembly surface are combined to determine whether the lens is pressed in place, thereby improving the accuracy of determining whether the lens is pressed in place.

[0058] Please refer to Figure 8 and Figure 9 . Specifically, in the embodiment, the lens carrying mechanism 4 comprises a gantry 41 arranged along the Y-axis direction, and the gantry 41 is provided with a Y-axis double-mover linear module 42. The first mover 421 of the Y-axis double-mover linear module 42 is provided with a first Z-axis linear module 4211 and a second grating ruler 4212, the driving plate of the first Z-axis linear module 4211 is provided with a first suction pen 4213 and a second grating reading head 4214, and the second grating ruler 4212 and the second grating reading head 4214 constitute the lens height measuring assembly 62. The second mover 422 of the Y-axis double-mover linear module 42 is provided with a second Z-axis linear module 4221, and the driving plate of the second Z-axis linear module 4221 is provided with a second suction pen 4222. The Y-axis double-mover linear module 42 first transfers the lens in the lens tray to the lens reference seat 61 through the first mover 421, and then transfers the lens to the lens barrel on the assembly jig 23 through the second mover 422 after measuring the height of the lens by the height measuring assembly.

[0059] Please refer to Figure 1 , Figure 8 , Figure 10, specifically, in the embodiment, the lens height measurement positioning assembly further includes a cylinder alignment clamp 71 and a first lower camera 72. The cylinder alignment clamp 71 is arranged on a driving plate of the first Z-axis linear module 4211 and located directly below the first suction pen 4213, and is used for aligning the lens sucked by the first suction pen 4213, thereby achieving preliminary positioning of the lens. The first lower camera 72 is arranged between the lens switching and feeding mechanism 3 and a lens reference seat 61, the lens reference seat 61 is arranged on a second electric screw 73 driven in the X-axis direction, the first mover 421 first transfers the aligned lens to above the first lower camera 72, the first lower camera 72 acquires the position coordinates of the lens, and the first mover 421 and the second electric screw 73 adjust the relative positions of the lens reference seat 61 and the first mover 421 according to the acquired position coordinates of the lens, thereby accurately placing the lens on the lens reference seat 61, and improving the accuracy of lens height measurement.

[0060] Please refer to Figure 1 、 Figure 2 、 Figure 9 , specifically, in the embodiment, the lens assembly detection positioning assembly further includes an upper camera 81, a second lower camera 82 and an NG bin 83. The upper camera 81 is arranged on the second mover 422, the second lower camera 82 is arranged between the lens reference seat 61 and an assembly jig 23, the assembly jig 23 is arranged on a third electric screw 84 driven in the X-axis direction, and the NG bin 83 is located below the movement track of the second mover 422. The upper camera 81 is used for appearance detection of the upper surface of the lens on the lens reference seat 61. The second lower camera 82 is used for appearance detection of the lower surface of the lens and acquires the position coordinates of the lens moved above it. The second mover 422 and the third electric screw 84 adjust the relative positions of the assembly jig 23 and the second mover 422 according to the acquired position coordinates of the lens, thereby accurately assembling the lens into the lens barrel. Through appearance detection of the lens by the upper camera 81 and the second lower camera 82, and collection of unqualified lenses by the NG bin 83, the yield of lens assembly is greatly improved. Embodiment 3:

[0061] Please refer to Figure 11Compared with embodiment 2, the lens barrel feeding jig 22 of the embodiment includes a fixing seat 221 arranged on the assembly workbench 1, and the heating type bearing seat 24 is arranged on the top of the fixing seat 221. A height measuring plate 222 is arranged on one side wall of the fixing seat 221, and a height measuring cylinder 223 is arranged on the height measuring plate 222. The piston end of the height measuring cylinder 223 is provided with a height measuring head 224 moving along the Z-axis direction. A third grating reading head 226 is arranged on the height measuring plate 222, and a third grating ruler 225 is arranged on the piston end of the height measuring cylinder 223. When the height measuring head 224 driven by the height measuring cylinder 223 is lowered to contact the lens assembly surface of the lens barrel on the heating type bearing seat 24, the third grating reading head 226 reads the position data of the third grating ruler 225, so as to obtain the actual height of the lens assembly surface of the lens barrel. After the lens assembled in the lens barrel is pressed tightly by the pressing rod 54, the position data of the first grating ruler 55 is read by the first grating reading head 56, and the actual height of the lens and the actual height of the lens assembly surface of the lens barrel are combined to judge whether the lens is pressed in place, thereby further improving the accuracy of judging whether the lens is pressed in place.

[0062] The application also provides a lens assembly pipeline, which includes one or more online heating type lens assembly devices arranged in sequence. In the multiple online heating type lens assembly devices arranged in sequence, the horizontal moving mechanisms 21 of the two adjacent online heating type lens assembly devices are connected together, all the connected horizontal moving mechanisms 21 are driven by the same first electric screw rod, and the first electric screw rod is arranged on the assembly workbench 1 of one of the online heating type lens assembly devices. The pipeline design simplifies the driving structure of the horizontal moving mechanism 21 and the design cost, and greatly improves the assembly efficiency.

[0063] Please refer to Figure 12 Specifically, the lens assembly pipeline further includes a lens barrel feeding device 100, an outer pressing ring locking device and a material collecting device.

[0064] The lens barrel feeding device 100 is arranged upstream of the multiple online heating type lens assembly devices, and is used for transferring the lens barrel placed in a lens barrel tray to a preheating tray 10051 for preheating, and then transferring the lens barrel to a discharging station.

[0065] The lens barrel feeding device 100 further comprises a lens barrel feeding base plate 1001, on which a lifting hopper 1002, a lens barrel tray Y-axis linear module 1003, a lens barrel carrying X-axis linear module 1004, a lens barrel preheating Y-axis module 1005 and a discharging jig 1006 are arranged. The specific structure and cooperation relationship of the lifting hopper 1002, the lens barrel tray Y-axis linear module 1003 and the lens barrel carrying X-axis linear module 1004 are realized by using the prior art, and the preheating tray 10051 is arranged on the driving plate of the lens barrel preheating Y-axis module 1005, which is used for preheating the lens barrels in batches. The heating temperatures of the preheating tray 10051, the lens barrel feeding jig 22, the transition jig 25 and the assembly jig 23 can be set to be gradiently increased, so as to improve the overall efficiency of the lens barrel assembly heating. The heating temperatures of the assembly jig 23 and the pressing mechanism 5 can be set to be consistent, or the heating temperature of the pressing mechanism 5 can be slightly lower than that of the assembly jig 23, so as to ensure that the thermal expansion data of the lens barrel reaches the designed range. The discharging jig 1006 is arranged at a discharging station on the lens barrel feeding base plate 1001, and the lens barrels preheated by the preheating tray 10051 are sequentially transferred to the discharging jig 1006 by the lens barrel carrying X-axis linear module 1004. The discharging jig 1006 is also provided with a heating type bearing seat 24, so as to ensure that the lens barrel is in a thermal expansion state.

[0066] The transverse moving mechanism 21 of the online heating type lens assembly device connected with the discharging jig 1006 of the lens barrel feeding device 100 transfers the lens barrels on the discharging station to the lens barrel feeding jig 22, and sequentially flows according to the process steps, so as to complete the assembly of the lens and the lens barrel.

[0067] The outer pressure ring locking device is arranged downstream of a plurality of online heating type lens assembly devices, and the specific structure thereof is realized by using the prior art, which is used for locking and fixing the outer pressure ring at the end of the lens, and pressing the lens barrel in which the lens is assembled.

[0068] The receiving device is arranged downstream of the outer pressure ring locking device, and the specific structure thereof is realized by using the prior art, which is used for transferring the lens with the locked outer pressure ring to a finished product tray.

[0069] The application further provides a lens assembly method, which is different from the prior art in that the online heating type lens assembly device is used to realize the assembly of the lens barrel and the lens.

[0070] It should be noted that the various linear modules in the embodiments of the application can be electric screw rod modules or precise cylinder sliding tables.

[0071] The above is further detailed description of the present application in combination with specific preferred embodiments, and cannot be deemed as limitation of the specific implementation of the present application to these descriptions. For those skilled in the art to which the present application belongs, without departing from the concept of the present application, a number of simple deductions and substitutions can be made, and all of them shall be deemed as falling within the protection scope of the present application.

Claims

1. An in-line heated lens cell assembly apparatus, characterized by, It includes: The lens barrel carrying line body (2) further includes a transverse moving mechanism (21) reciprocating in the X-axis direction, one side of the transverse moving mechanism (21) is provided with a lens barrel feeding jig (22), an assembly jig (23) and a pressing mechanism (5), when the transverse moving mechanism (21) reciprocates, it is used for stepwise transferring the lens barrel among the unloading station of the previous equipment, the lens barrel feeding jig (22), the assembly jig (23) and the pressing mechanism (5), and the lens barrel feeding jig (22), the assembly jig (23) and the pressing mechanism (5) are all provided with a heating type bearing seat (24); the transverse moving mechanism (21) includes a first sliding rail (211) provided on the assembly workbench (1) in the X-axis direction, a lower cross plate (212) is slidably provided on the first sliding rail (211), the assembly workbench (1) is provided with a first electric screw rod driving the lower cross plate (212) to slide, a first lifting cylinder (213) is provided on the lower cross plate (212), a piston end of the first lifting cylinder (213) is provided with an upper cross plate (214), the upper cross plate (214) is provided with a plurality of parallel cylinder clamping jaws (215), and the plurality of parallel cylinder clamping jaws (215) correspond one-to-one to the lens barrel feeding jig (22), the assembly jig (23) and the pressing mechanism (5); The lens switching feeding mechanism (3) further includes two supporting plates (31) and a driver (32) driving the two supporting plates (31) to move alternately in the X-axis direction, at least one lens tray for containing lenses is placed on the supporting plate (31); The lens carrying mechanism (4) is transversely arranged on the lens switching feeding mechanism (3) and the lens barrel carrying line body (2) in the Y-axis direction, and is used for transferring the lenses in the lens tray to the lenses in the lens barrel on the assembly jig (23), so as to realize the assembly of the lens barrel and the lenses; The pressing mechanism (5) is used for pressing the lenses assembled in the lens barrel.

2. The in-line heated lens cell assembly apparatus of claim 1, wherein, The heating type bearing seat (24) includes a heating block (241), a cushion block (242), a heat dissipation block (243) and a fan frame (244) connected in sequence from top to bottom, the top of the heating block (241) is provided with a containing groove (2411) for placing the lens barrel, and the bottom of the heat dissipation block (243) is provided with a plurality of heat dissipation fins (2431); the fan frame (244) is a square tube frame, a heat dissipation fan (2441) is arranged at the square tube hole of the square tube frame, and exhaust gaps (2442) are arranged on the four side walls of the square tube frame.

3. The online heated lens cell assembly apparatus of claim 1, wherein, The driver (32) is an electric synchronous belt, the electric synchronous belt is arranged on a mounting plate (33), and the mounting plate (33) is fixed on the assembly workbench (1); the mounting plate (33) is provided with a second sliding rail (34) and a third sliding rail (35) respectively slidably matched with the two supporting plates (31), and the two supporting plates (31) are respectively fixed with two side edges of the electric synchronous belt.

4. The online heated lens cell assembly apparatus of claim 1, wherein, The pressing mechanism (5) comprises a base (51) arranged on the assembly workbench (1), the heating type bearing seat (24) is arranged on the top of the base (51), a vertical plate (52) is arranged on one side wall of the base (51), a pressing cylinder (53) is arranged on the vertical plate (52), the piston end of the pressing cylinder (53) is provided with a pressing rod (54) moving along the Z-axis direction; the vertical plate (52) is provided with a first grating reading head (56), the piston end of the pressing cylinder (53) is provided with a first grating ruler (55), after the pressing rod (54) presses the lenses assembled in the lens barrel, the position data of the first grating ruler (55) is read by the first grating reading head (56), and whether the lenses are pressed to the position is judged by combining the design height of the lenses and the design height of the lens barrel assembly surface.

5. The online heated lens cell assembly apparatus of claim 4, wherein, It also comprises a lens height measuring mechanism, which comprises a lens reference seat (61) and a lens height measuring assembly (62), the lens reference seat (61) is arranged between the lens switching and feeding mechanism (3) and the lens barrel conveying line body (2), the lens height measuring assembly (62) is arranged on the lens conveying mechanism (4), the lens conveying mechanism (4) first transfers the lenses in the lens tray to the lens reference seat (61), and then transfers the lenses to the lens barrel on the assembly jig (23) after measuring the height of the lenses by the height measuring assembly; after the pressing rod (54) presses the lenses assembled in the lens barrel, the position data of the first grating ruler (55) is read by the first grating reading head (56), and whether the lenses are pressed to the position is judged by combining the measured height of the lenses and the design height of the lens barrel assembly surface.

6. The online heated lens cell assembly apparatus of claim 5, wherein, The lens conveying mechanism (4) comprises a gantry (41) arranged along the Y-axis direction, and a Y-axis double-motor linear module (42) is arranged on the gantry (41); a first Z-axis linear module (4211) and a second grating ruler (4212) are arranged on a first motor (421) of the Y-axis double-motor linear module (42), a first suction pen (4213) and a second grating reading head (4214) are arranged on the driving plate of the first Z-axis linear module (4211), and the second grating ruler (4212) and the second grating reading head (4214) constitute the lens height measuring assembly (62); a second Z-axis linear module (4221) is arranged on a second motor (422) of the Y-axis double-motor linear module (42), and a second suction pen (4222) is arranged on the driving plate of the second Z-axis linear module (4221); the Y-axis double-motor linear module (42) first transfers the lenses in the lens tray to the lens reference seat (61) through the first motor (421), and then transfers the lenses to the lens barrel on the assembly jig (23) through the second motor (422) after measuring the height of the lenses by the height measuring assembly.

7. The online heated lens cell assembly apparatus of claim 6, wherein, The lens height measuring positioning assembly further comprises a cylinder alignment clamp jaw (71) and a first lower camera (72); the cylinder alignment clamp jaw (71) is arranged on the driving plate of the first Z-axis linear module (4211) and is located directly below the first suction pen (4213) and is used for aligning the lens sucked by the first suction pen (4213); the first lower camera (72) is arranged between the lens switching and feeding mechanism (3) and the lens reference seat (61), the lens reference seat (61) is arranged on a second electric screw (73) driven in the X-axis direction, the first mover (421) first transfers the aligned lens to the upper side of the first lower camera (72), the first lower camera (72) obtains the position coordinates of the lens, and the first mover (421) and the second electric screw (73) adjust the relative positions of the lens reference seat (61) and the first mover (421) according to the obtained position coordinates of the lens, so that the lens is accurately placed on the lens reference seat (61).

8. The online heated lens cell assembly apparatus of claim 7, wherein, The lens assembly detection positioning assembly further comprises an upper camera (81), a second lower camera (82) and an NG material box (83); the upper camera (81) is arranged on the second mover (422), the second lower camera (82) is arranged between the lens reference seat (61) and the assembly jig (23), the assembly jig (23) is arranged on a third electric screw (84) driven in the X-axis direction, and the NG material box (83) is located below the movement track of the second mover (422); the upper camera (81) is used for appearance detection of the upper surface of the lens on the lens reference seat (61); the second lower camera (82) is used for appearance detection of the lower surface of the lens and obtains the position coordinates of the lens moved to the upper side thereof; the second mover (422) and the third electric screw (84) adjust the relative positions of the assembly jig (23) and the second mover (422) according to the obtained position coordinates of the lens, so that the lens is accurately assembled into the lens barrel; and the NG material box (83) is used for collecting lenses that fail in appearance detection.

9. The online heated lens cell assembly apparatus of claim 5, wherein, The lens barrel loading jig (22) comprises a fixed seat (221) arranged on an assembly workbench (1), and the heating type bearing seat (24) is arranged on the top of the fixed seat (221); a height measuring plate (222) is arranged on one side wall of the fixed seat (221), and a height measuring cylinder (223) is arranged on the height measuring plate (222); a height measuring head (224) moving along the Z-axis direction is arranged on the piston end of the height measuring cylinder (223); a third grating reading head (226) is arranged on the height measuring plate (222), and a third grating ruler (225) is arranged on the piston end of the height measuring cylinder (223); when the height measuring head (224) driven by the height measuring cylinder (223) is lowered to contact the lens assembly surface of the lens barrel on the heating type bearing seat (24), the third grating reading head (226) reads the position data of the third grating ruler (225), so as to obtain the actual height of the lens assembly surface of the lens barrel; after the lens assembled in the lens barrel is pressed tightly by the pressing rod (54), the position data of the first grating ruler (55) is read by the first grating reading head (56), and the actual height of the lens and the actual height of the lens assembly surface of the lens barrel are combined to determine whether the lens is pressed into place.

10. A lens set-up pipeline, characterized in that, The method comprises the following steps: arranging one or more online heating type lens assembly devices as claimed in claim 1 in sequence; connecting the horizontal moving mechanisms (21) of two adjacent online heating type lens assembly devices together; driving all the connected horizontal moving mechanisms (21) by using a same first electric screw rod; and arranging the first electric screw rod on the assembly workbench (1) of one of the online heating type lens assembly devices.

11. The lens set-up pipeline of claim 10, wherein, The method further comprises the following steps: A lens barrel feeding device (100) is arranged upstream of the online heating type lens assembly devices, and is used for transferring the lens barrels placed in a lens barrel tray to a preheating tray for preheating, and then transferring the lens barrels to a discharging station; the horizontal moving mechanism (21) of the online heating type lens assembly device connected with the lens barrel feeding device (100) is used for transferring the lens barrels on the discharging station to the lens barrel loading jig (22); An outer pressure ring locking device is arranged downstream of the online heating type lens assembly devices, and is used for locking and fixing the outer pressure ring at the end of the lens, and pressing the lens barrel assembled with the lens tightly; A receiving device is arranged downstream of the outer pressure ring locking device, and is used for transferring the lens with the locked outer pressure ring to a finished product tray.

12. A method of lens assembly, characterized by, The method is implemented by using the online heating type lens assembly device as claimed in claim 1 to assemble the lens barrel and the lens.

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