Lens assembling method and lens assembling equipment

Abstract

The invention relates to the technical field of lens assembly, in particular to a lens assembly method and equipment, and the method comprises the steps: transferring a lens cone to an assembly position; assembling a third lens; assembling the first space ring; assembling a second lens; assembling the first lens; assembling a pressing ring; turning over the lens barrel; assembling a fourth lens; assembling a second space ring; and assembling the fifth lens. When the lens is assembled, the third lens, the first space ring, the second lens and the first lens are sequentially installed from one end of the lens barrel, and finally the pressing ring is installed, so that parts at one end of the lens barrel are installed. And then the lens cone is turned over, installation is carried out from the other end of the lens cone, and the first lens, the second space ring and the fifth lens are installed in sequence, so that the assembly process of the lens is completed. Compared with an existing lens structure, the structure of the lens barrel is improved, step-by-step installation of the two ends of the lens barrel is achieved, and the assembling efficiency of the lens is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lens assembly, and in particular to a lens assembly method and lens assembly equipment. Background Art

[0002] Optical lenses are essential components in machine vision systems, which directly affect the quality of imaging and the implementation and effect of algorithms. Optical lenses can be divided into short-focus lenses, medium-focus lenses, and long-focus lenses based on focal length; wide-angle, standard, and telephoto lenses based on field of view; and fixed-aperture fixed-focus lenses, manual-aperture fixed-focus lenses, automatic-aperture fixed-focus lenses, manual-zoom lenses, automatic-zoom lenses, automatic-aperture electric-zoom lenses, and electric three-variable lenses based on structure.

[0003] Regardless of the lens type, the basic structure includes a lens barrel, lenses, and spacers. The lens barrel acts as a base carrier. Multiple lenses can be adjusted to adjust the image size by adjusting the spacing. The lenses can be spaced apart by spacers. The lenses and spacers are fixed to the specified position of the lens barrel. After the lenses and spacers are plugged and installed on the lens barrel, they need to be fixed with glue.

[0004] When assembling existing lenses, the lenses and spacers are directly installed one by one from one end of the lens barrel, and the installation is completely dependent on manual labor, resulting in low production efficiency of lens assembly. Summary of the invention

[0005] The object of the present invention is to provide a lens assembly method and a lens assembly device to solve the problem of low production efficiency of lens assembly in the prior art.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a lens assembly method, comprising the following steps: moving the lens barrel to an assembly position, so that the first end of the lens barrel faces upward, and a supporting boss is provided in the middle position of the lens barrel; assembling the third lens, first moving the third lens to directly above the first end of the lens barrel, then placing the third lens into the lens barrel and abutting against the supporting boss; assembling the first spacer, first moving the first spacer to directly above the first end of the lens barrel, then placing the first spacer into the lens barrel and abutting against the third lens; assembling the second lens, first moving the second lens to directly above the first end of the lens barrel, then placing the second lens into the lens barrel and abutting against the first spacer; assembling the first lens, first moving the first lens to directly above the first end of the lens barrel, then placing the first lens into the lens barrel and abutting against the first spacer. The lens barrel is provided with a plurality of lens elements, each of which is a plurality of lens elements having a plurality of lens elements, and the plurality of lens elements are placed in the lens barrel and abut against the second lens element; the pressing ring is assembled, the first lens element is first moved to the top of the first end of the lens barrel, and the pressing ring is then pressed onto the first end of the lens barrel so that the pressing ring abuts against the first lens element; the lens barrel is turned over so that the first end of the lens barrel faces downward and the second end of the lens barrel faces upward; the fourth lens element is first moved to the top of the second end of the lens barrel, and the fourth lens element is then placed into the lens barrel and abuts against the third lens element; the second spacer is first moved to the top of the second end of the lens barrel, and the second spacer is then placed into the lens barrel and abuts against the fourth lens element; the fifth lens element is first moved to the top of the second end of the lens barrel, and the fifth lens element is then pressed onto the second end of the lens barrel so that the fifth lens abuts against the second spacer.

[0007] Furthermore, in the step of assembling the third lens, the axis of the third lens is made to coincide with the axis of the lens barrel, and then the third lens is vertically placed into the lens barrel.

[0008] Furthermore, in the step of assembling the pressing ring, after the pressing ring is assembled in place, glue is dispensed around the pressing ring, and after the glue is dispensed, the glue is cured; after the glue is cured, the step of flipping the lens barrel is performed.

[0009] Furthermore, in the step of assembling the fifth lens, after the fifth lens is assembled, glue is dispensed around one circumference of the fifth lens, and after the glue is dispensed, the glue is cured.

[0010] Furthermore, the present application also provides a lens assembly device, which is used in the lens assembly method described above, and the lens assembly device includes a lens barrel loading mechanism, a component loading mechanism and a material transfer mechanism, the lens barrel loading mechanism includes a lens barrel material tray and a transfer slide rail, a lens barrel is placed in the lens barrel material tray, and the lens barrel material tray can slide along the transfer slide rail to an assembly position; the component loading mechanism includes a component material tray and a loading slide rail, a first lens, a second lens, a third lens, a fourth lens are placed in sequence in the component material tray , the fifth lens, the first spacer, the second spacer and the pressure ring, the component tray can slide along the loading slide to the installation position, the loading slide is parallel to the transfer slide; the material transfer mechanism includes a transfer robot and a supporting slide, the supporting slide is mounted above the loading slide and the transfer slide, the supporting slide is perpendicular to the transfer slide and the loading slide, the transfer robot is slidably connected to the supporting slide and transfers the components on the component tray to the lens barrel on the lens barrel tray.

[0011] Furthermore, the lens assembly equipment also includes a glue dispensing mechanism, which is arranged on one side of the transfer robot and is slidably connected to the supporting slide rail.

[0012] Furthermore, the lens assembly equipment also includes a curing mechanism, which includes a support frame, a curing light and a press-on assembly. The support frame is mounted on the transfer slide rail, the curing light and the press-on assembly are arranged on the support frame, and the lens barrel material tray can slide to the bottom of the support frame.

[0013] Furthermore, the pressing assembly includes a pressing cylinder and a pressing head, the pressing head can be inserted into the lens barrel and press the lens, and the curing lamp is located on one side of the pressing assembly and irradiates the lens barrel.

[0014] Furthermore, the lens barrel material tray array is arranged with a plurality of discharge positions, each of which can place a lens barrel, there are a plurality of pressing heads, the plurality of pressing heads are arranged in a row and are arranged corresponding to the discharge positions in a horizontal row of the lens barrel material tray, and there are a plurality of curing lights, the plurality of curing lights are arranged in a row and are arranged parallel to the pressing heads.

[0015] Furthermore, a spring is provided inside the pressing head.

[0016] The beneficial effects of the present invention are:

[0017] 1. When assembling the lens, first install it from one end of the lens barrel, install the third lens, the first spacer, the second lens and the first lens in sequence, and finally install the pressure ring. At this point, the parts of one end of the lens barrel are installed. Then flip the lens barrel over, and then install it from the other end of the lens barrel, install the first lens, the second spacer and the fifth lens in sequence, and the lens assembly process is completed. Compared with the existing lens structure, this application improves the structure of the lens barrel to achieve step-by-step installation at both ends of the lens barrel, which greatly improves the assembly efficiency of the lens.

[0018] 2. During the assembly of the pressing ring, once the pressing ring is in place, glue is dispensed around the pressing ring, and the glue is cured after the glue is dispensed. The glue operation can enhance the stability of the pressing ring, making the lens stable and not easy to loosen during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the overall structure of a lens provided in an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of the overall structure of a lens assembly device in an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of the overall structure of a curing mechanism used in a lens assembly device in an embodiment of the present invention;

[0023] Figure 4 Schematic diagram of the overall structure of the curing mechanism used in the lens assembly device in the embodiment of the present invention from another viewing angle.

[0024] Description of reference numerals:

[0025] a, lens barrel; b1, first lens; b2, second lens; b3, third lens; b4, fourth lens; b5, fifth lens; c1, first spacer; c2, second spacer; d, pressure ring;

[0026] 10. Lens barrel loading mechanism; 11. Lens barrel material tray; 12. Transfer slide rail; 20. Parts loading mechanism; 21. Parts material tray; 22. Loading slide rail; 23. Material bin; 30. Material transfer mechanism; 31. Transfer robot; 32. Support slide rail; 40. Glue dispensing mechanism; 50. Curing mechanism; 51. Support frame; 52. Curing lamp; 53. Pressing assembly; 531. Pressing cylinder; 532. Pressing head. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] Example 1

[0032] A lens assembly method provided in an embodiment of the present invention comprises the following steps:

[0033] S10: moving the lens barrel a to an assembly position, with the first end of the lens barrel a facing upward, and a supporting boss is provided in the middle of the lens barrel a;

[0034] S20: Assembling the third lens b3, firstly moving the third lens b3 to the position directly above the first end of the lens barrel a, and then placing the third lens b3 into the lens barrel a and abutting against the supporting boss;

[0035] S30: Assembling the first spacer c1, first moving the first spacer c1 to just above the first end of the lens barrel a, then placing the first spacer c1 into the lens barrel a and abutting against the third lens b3;

[0036] S40: Assembling the second lens b2, firstly moving the second lens b2 to the position directly above the first end of the lens barrel a, and then placing the second lens b2 into the lens barrel a and abutting against the first spacer c1;

[0037] S50: Assembling the first lens b1, first moving the first lens b1 to the top of the first end of the lens barrel a, then placing the first lens b1 into the lens barrel a and abutting against the second lens b2;

[0038] S60: Assembling the pressing ring d, first moving the first lens b1 to the top of the first end of the lens barrel a, and then crimping the pressing ring d to the first end of the lens barrel a, so that the pressing ring d abuts against the first lens b1;

[0039] S70: turning over the lens barrel a so that the first end of the lens barrel a faces downward and the second end of the lens barrel a faces upward;

[0040] S80: Assembling the fourth lens b4, firstly moving the fourth lens b4 to the position directly above the second end of the lens barrel a, and then placing the fourth lens b4 into the lens barrel a and abutting against the third lens b3;

[0041] S90: Assembling the second spacer c2, first moving the second spacer c2 to just above the second end of the lens barrel a, and then placing the second spacer c2 into the lens barrel a and abutting against the fourth lens b4;

[0042] S100: Assembling the fifth lens b5, first moving the fifth lens b5 to just above the second end of the lens barrel a, and then crimping the fifth lens b5 to the second end of the lens barrel a, so that the fifth lens b5 abuts against the second spacer c2.

[0043] The lens assembly method in this embodiment is performed by a lens assembly device, which includes a lens barrel loading mechanism 10, a component loading mechanism 20 and a material transfer mechanism 30. The lens barrel loading mechanism 10 includes a lens barrel tray 11 and a transfer slide 12. The lens barrel a is placed in the lens barrel tray 11, and the lens barrel tray 11 can slide to an assembly position along the transfer slide 12; the component loading mechanism 20 includes a component tray 21 and a loading slide 22. The first lens b1, the second lens b2, the third lens b3, the fourth lens b4, The fifth lens b5, the first spacer ring c1, the second spacer ring c2 and the pressure ring d, the component tray 21 can slide along the loading slide rail 22 to the installation position, the loading slide rail 22 is parallel to the transfer slide rail 12; the material transfer mechanism 30 includes a transfer robot 31 and a support slide rail 32, the support slide rail 32 is mounted above the loading slide rail 22 and the transfer slide rail 12, the support slide rail 32 is perpendicular to the transfer slide rail 12 and the loading slide rail 22, the transfer robot 31 is slidably connected to the support slide rail 32 and transfers the components on the component tray 21 to the lens barrel a on the lens barrel tray 11.

[0044] When assembling the lens, first install it from one end of the lens barrel a, install the third lens b3, the first spacer c1, the second lens b2 and the first lens b1 in sequence, and finally install the pressure ring d, so that the parts of one end of the lens barrel a are installed. Then turn the lens barrel a over, and then install it from the other end of the lens barrel a, install the first lens b1, the second spacer c2 and the fifth lens b5 in sequence, so that the lens assembly process is completed. Compared with the existing lens structure, the present application improves the structure of the lens barrel a, realizes the step-by-step installation of the two ends of the lens barrel a, and greatly improves the assembly efficiency of the lens.

[0045] Specifically, in step S10, the lens barrel a is placed on the lens barrel tray 11, and the lens barrel a moves along the transfer slide 12 with the lens barrel tray 11 and is transferred to the assembly position. The first lens b1, the second lens b2, the third lens b3, the fourth lens b4, the fifth lens b5, the first spacer c1, the second spacer c2 and the pressing ring d are placed on the component tray 21 in sequence, and the component tray 21 slides to the installation position along the loading slide 22, and the loading slide 22 is parallel to the transfer slide 12. The installation position is located on one side of the assembly position, and the installation position and the assembly position are both located directly below the support slide 32. The lens barrel tray 11 and the component tray 21 are both provided with placement grooves, and each part is placed in the placement grooves. The placement grooves play a role in positioning the parts, which facilitates the subsequent transfer manipulator 31 to accurately pick up materials. The lens barrel a includes a first end and a second end. The initial placement state of the lens barrel a is that the first end faces upward. When the lens assembly is completed at the first end position, the lens barrel a is flipped over so that the second end of the lens barrel a faces upward. This process will be described in detail in subsequent steps, so it will not be repeated here.

[0046] Specifically, in step S20, the third lens b3 is assembled. Before assembly, the transfer robot 31 slides on the support rail 32, and pauses when it slides to the top of the corresponding third lens b3 on the component tray 21. Then, the transfer robot 31 moves down to grab the third lens b3, resets and lifts after grabbing, and then slides along the support rail 32 again. When it slides to the top of the first end of the lens barrel a, it pauses, and then moves down to put the third lens b3 into the lens barrel a and abuts against the support boss. When the transfer robot 31 moves to the top of the third lens b3, the axis of the third lens b3 coincides with the axis of the lens barrel a, and then the third lens b3 is vertically placed into the lens barrel a. The head of the transfer robot 31 can use an electronic suction cup and a vacuum suction cup to transport the third lens b3 by suction and fixation of the suction cup.

[0047] After step S20 is completed, step S30 is performed to assemble the first spacer c1. Before assembly, the transfer robot 31 slides on the support rail 32, and pauses when it slides to the top of the first spacer c1 corresponding to the component tray 21. Then the transfer robot 31 moves down to grab the first spacer c1, resets and lifts after grabbing, and then slides along the support rail 32 again, and pauses when it slides to the top of the first end of the lens barrel a. Then it moves down to put the first spacer c1 into the lens barrel a and abuts against the third lens b3. When the transfer robot 31 moves to the top of the first spacer c1, the axis of the first spacer c1 coincides with the axis of the lens barrel a, and then the first spacer c1 is vertically placed into the lens barrel a.

[0048] After step S30 is completed, step S40 is performed to assemble the second lens b2, the transfer robot 31 slides on the support rail 32, and pauses when it slides to the top of the corresponding second lens b2 on the component tray 21, and then the transfer robot 31 moves down to grab the second lens b2, resets and lifts after grabbing, and then slides along the support rail 32 again, and pauses when it slides to the top of the first end of the lens barrel a, and then moves down to put the second lens b2 into the lens barrel a and abuts against the first spacer c1. Among them, when the transfer robot 31 moves to the top of the second lens b2, the axis of the second lens b2 coincides with the axis of the lens barrel a, and then the second lens b2 is vertically placed into the lens barrel a.

[0049] After step S40 is completed, step S50 is performed to assemble the first lens b1, and the transfer robot 31 slides on the support rail 32, and pauses when it slides to the top of the first lens b1 corresponding to the component tray 21, and then the transfer robot 31 moves down to grab the first lens b1, resets and lifts after grabbing, and then slides along the support rail 32 again, and pauses when it slides to the top of the first end of the lens barrel a, and then moves down to put the first lens b1 into the lens barrel a and abuts against the second lens b2. Among them, when the transfer robot 31 moves to the top of the first lens b1, the axis of the first lens b1 coincides with the axis of the lens barrel a, and then the first lens b1 is vertically placed into the lens barrel a.

[0050] After step S50 is completed, step S60 is performed to assemble the pressing ring d, and the transfer robot 31 slides on the support slide rail 32. When it slides to the top of the corresponding pressing ring d on the component tray 21, it pauses. Then the transfer robot 31 moves down to grab the pressing ring d, resets and lifts after grabbing, and then slides along the support slide rail 32 again. When it slides to the top of the first end of the lens barrel a, it pauses, and then moves down to put the pressing ring d into the lens barrel a and abuts against the first lens b1. Among them, when the transfer robot 31 moves to the top of the pressing ring d, the axis of the pressing ring d coincides with the axis of the lens barrel a, and then the pressing ring d is vertically placed into the lens barrel a. When the pressing ring d is assembled in place, glue is applied to the circle of the pressing ring d, and the glue is cured after the glue application is completed.

[0051] The lens assembly equipment also includes a glue dispensing mechanism 40, which is arranged on one side of the transfer manipulator 31 and is synchronously slidably connected to the support rail 32 with the transfer manipulator 31. The above-mentioned glue dispensing process is completed by the glue dispensing mechanism 40. The glue dispensing mechanism 40 includes a cylinder, a fixed seat and a glue dispensing needle. The cylinder is arranged on the fixed seat and is rotatably connected to the fixed seat. The end of the cylinder is provided with a glue dispensing needle; the fixed seat is also provided with an adjustment mechanism, and the adjustment mechanism drives the cylinder to rotate to achieve the circumferential movement of the glue dispensing needle. In this embodiment, a control pump is provided in the cylinder, and the glue in the cylinder can be pumped out from the glue dispensing needle by the control pump. The adjustment mechanism can be a manipulator, or a transmission part such as a gear or a pulley, as long as the adjustment mechanism can drive the cylinder to rotate. The rotation of the cylinder can fully stir the glue liquid to prevent the glue liquid from solidifying. Among them, the glue dispensing needle can also be bent to facilitate the glue coating needs of lenses of different sizes.

[0052] The lens assembly equipment also includes a curing mechanism 50, and the curing process after glue dispensing is completed by the curing mechanism 50. The curing mechanism 50 includes a support frame 51, a curing lamp 52 and a pressing assembly 53. The support frame 51 is mounted on the transfer slide rail 12, and the curing lamp 52 and the pressing assembly 53 are arranged on the support frame 51. After the glue dispensing is completed, the lens barrel a can slide to the bottom of the support frame 51 along with the lens barrel material tray 11, and then the pressing assembly 53 presses and fixes the lens to be cured. The pressing assembly 53 includes a pressing cylinder 531 and a pressing head 532. The pressing head 532 can extend into the lens barrel a and press the lens. The curing lamp 52 is located on one side of the pressing assembly 53, and irradiates the lens barrel a to solidify the glue on the lens barrel a.

[0053] In this embodiment, the lens barrel material tray 11 is arranged in an array with multiple discharge positions, each of which can be used to place the lens barrel a, there are multiple pressing heads 532, the multiple pressing heads 532 are arranged in a row, and are arranged corresponding to the discharge positions in a horizontal row of the lens barrel material tray 11, and there are multiple curing lamps 52, the multiple curing lamps 52 are arranged in a row and are arranged in parallel with the pressing head 532. While the pressing head 532 is pressing, the curing lamp 52 on one side can irradiate the lens being pressed, so that the glue on the lens is cured. Among them, the curing lamp 52 is a UV lamp, and the principle of UV lamp curing is to use the energy of ultraviolet rays to trigger a chemical reaction, so that the liquid glue or coating is quickly cured in a short time. When the glue or coating is exposed to a UV light source, the energy of ultraviolet rays will trigger the decomposition of the photoinitiator in the glue, and produce active substances such as free radicals or cations. These active substances will react chemically with the monomers or prepolymers in the glue to form a cross-linked network, so that the glue or coating is quickly cured.

[0054] In this embodiment, since the lens barrel material tray 11 is arranged in an array with multiple rows and columns of material placement positions, when the lens assembly equipment assembles the lens, it first assembles multiple lenses and completes the dispensing, and then performs a unified glue curing process. The curing of the glue is divided into two steps, the first step is to perform preliminary curing, and the second step is to perform re-curing after the preliminary curing is completed. During the preliminary curing, the pressing head 532 first presses the lens barrel a of the first column on the lens barrel material tray 11, and at this time, the curing lamp 52 is located on one side of the pressing head 532 and has not yet reached the top of the lens barrel material tray 11. At this time, the curing lamp 52 has a certain distance from the crimped lens barrel a, and the irradiation intensity is weak, which can play a role of preliminary curing for the glue in the crimped lens barrel a. After the glue is initially cured, the lens in the lens barrel a has been fixed, and at this time, the pressing head 532 is lifted and moved to press the lens barrel a of the second column. The curing lamp 52 is located at one side of the pressing head 532 and moves synchronously with the pressing head 532. When the pressing head 532 moves to press the lens barrel a of the second column, the curing lamp 52 is located directly above the lens barrel a of the first column. After the curing lamp 52 works, the glue of the lens barrel a that has been initially cured in the first column can be cured again. At this point, the glue on the lens barrel a of the first column has completed all the curing processes. At the same time, the curing lamp 52 can also irradiate the lens barrel a crimped on the second column, and play a role of initial curing for the glue in the crimped lens barrel a. The initial curing and re-curing can be carried out synchronously, which greatly improves the efficiency of the curing step of the glue of the lens barrel a. The above steps are carried out in sequence until all the lens barrels a on the lens barrel material tray 11 have completed the process of glue curing.

[0055] Among them, the main function of the pressing head 532 is to fix the lens, to prevent the lens from moving slightly during the curing process of the glue, which may lead to the production of defective lenses. After the glue in the lens barrel a is initially cured, it has played a role in fixing the lens, so after the glue in the lens barrel a is initially cured, there is no need to use the pressing head 532 for crimping. A spring is provided inside the pressing head 532, so that the pressing head forms an elastic pressing head, leaving a margin of movement, to prevent the lens in the lens barrel a from being damaged by excessive crimping force.

[0056] After the glue is solidified, the process is continued in step S70 to flip the lens barrel a. Considering the cost, the flipping of the lens barrel a is mainly done manually. When flipping, the lens barrel material tray 11 can be directly flipped, and there is no need to flip multiple lens barrels a one by one. In this embodiment, slots are provided at both the upper and lower ends of the lens barrel material tray 11, and baffles can be inserted into the slots. When the first end of the lens barrel a is required to face upward, a baffle is inserted into the bottom of the lens barrel material tray 11, and no baffle is provided on the top of the lens barrel material tray 11. At this time, the lens barrel a can be placed on the lens barrel material tray 11 with the first end facing upward. When the lens barrel a needs to be flipped after the lens at the first end is installed, first move the lens barrel tray 11 along the transfer slide rail 12 to the manual operation position, and then manually insert the baffle into the top position of the lens barrel tray 11. At this time, the lens barrel tray 11 can be flipped. After flipping, the bottom of the lens barrel tray 11 faces upward. At this time, remove the baffle at the bottom of the lens barrel tray 11. At this time, the second end of the lens barrel a faces upward, and the flipping step of the lens barrel a is completed.

[0057] After step S70 is completed, step S80 is performed to assemble the fourth lens b4. In step S80, the flipped lens barrel a is moved again along the transfer slide rail 12 with the lens barrel material tray 11 and transferred to the assembly position. Before assembly, the transfer robot 31 slides on the support slide rail 32, and pauses when it slides to the top of the corresponding fourth lens b4 on the component material tray 21, and then the transfer robot 31 moves down to grab the fourth lens b4, resets and lifts after grabbing, and then slides along the support slide rail 32 again, and pauses when it slides to the top of the second end of the lens barrel a, and then moves down to put the fourth lens b4 into the lens barrel a and abuts against the support boss. Among them, when the transfer robot 31 moves to the top of the fourth lens b4, the axis of the fourth lens b4 coincides with the axis of the lens barrel a, and then the fourth lens b4 is vertically placed into the lens barrel a.

[0058] After step S80 is completed, step S90 is performed to assemble the second spacer c2. Before assembly, the transfer robot 31 slides on the support rail 32, and pauses when it slides to the top of the corresponding second spacer c2 on the component tray 21. Then the transfer robot 31 moves down to grab the second spacer c2, resets and lifts after grabbing, and then slides along the support rail 32 again, and pauses when it slides to the top of the second end of the lens barrel a, and then moves down to put the second spacer c2 into the lens barrel a and abuts against the fourth lens b4. When the transfer robot 31 moves to the top of the second spacer c2, the axis of the second spacer c2 coincides with the axis of the lens barrel a, and then the second spacer c2 is vertically placed into the lens barrel a.

[0059] After step S90 is completed, step S100 is performed to assemble the fifth lens b5. The transfer robot 31 slides on the support rail 32, and pauses when it slides to the top of the corresponding fifth lens b5 on the component tray 21, and then the transfer robot 31 moves down to grab the fifth lens b5, resets and lifts after grabbing, and then slides along the support rail 32 again, and pauses when it slides to the top of the fifth end of the lens barrel a, and then moves down to put the fifth lens b5 into the lens barrel a and abuts against the second spacer c2. Among them, when the transfer robot 31 moves to the top of the fifth lens, the axis of the fifth lens b5 coincides with the axis of the lens barrel a, and then the fifth lens b5 is vertically placed into the lens barrel a.

[0060] When the fifth lens b5 is assembled, a glue dispensing operation is performed on one circumference of the fifth lens b5, and the glue is cured after the glue dispensing operation is completed. The process of glue dispensing operation and glue curing is described in detail in the above steps, so it will not be repeated here. When the glue dispensing operation and glue curing are completed, the lens barrel material tray 11 moves along the transfer slide rail 12 to the material taking station, and the processed lens barrel a can be removed and collected uniformly.

[0061] Compared with the existing lens structure, this embodiment improves the structure of the lens barrel a to achieve step-by-step installation of both ends of the lens barrel a, thereby greatly improving the assembly efficiency of the lens.

[0062] Example 2

[0063] As a lens assembly device provided by an embodiment of the present invention, it is used in the lens assembly method described in Example 1. The lens assembly device includes a lens barrel loading mechanism 10, a component loading mechanism 20 and a material transfer mechanism 30. The lens barrel loading mechanism 10 includes a lens barrel material tray 11 and a transfer slide rail 12. A lens barrel a is placed in the lens barrel material tray 11. The lens barrel material tray 11 can slide to an assembly position along the transfer slide rail 12; the component loading mechanism 20 includes a component material tray 21 and a loading slide rail 22. A first lens b1, a second lens b2, a third lens b3 are placed in the component material tray 21 in sequence. 3. The fourth lens b4, the fifth lens b5, the first spacer ring c1, the second spacer ring c2 and the pressure ring d. The component tray 21 can slide along the loading slide rail 22 to the installation position. The loading slide rail 22 is parallel to the transfer slide rail 12. The material transfer mechanism 30 includes a transfer robot 31 and a support slide rail 32. The support slide rail 32 is mounted above the loading slide rail 22 and the transfer slide rail 12. The support slide rail 32 is perpendicular to the transfer slide rail 12 and the loading slide rail 22. The transfer robot 31 is slidably connected to the support slide rail 32 and transfers the components on the component tray 21 to the lens barrel a on the lens barrel tray 11.

[0064] Specifically, the component feeding mechanism 20 further includes a silo 23, which is located at the end of the feeding slide rail 22. There may be multiple component trays 21, all of which are arranged in the silo 23. A tray positioning mechanism is provided on the feeding slide rail 22, and a lifting mechanism is provided in the silo 23. The tray positioning mechanism can extend into the silo 23 and cooperate with the lifting of the silo 23 to realize the taking and placing of the component tray 21, thereby realizing the automatic loading and unloading process of the component tray 21. In this embodiment, a double processing station is provided, and two lens barrel feeding mechanisms 10 are provided. The two lens barrel feeding mechanisms 10 are respectively located on both sides of the component feeding mechanism 20, and the two stations work independently without interfering with each other.

[0065] The lens assembly equipment also includes a glue dispensing mechanism 40, which is arranged on one side of the transfer manipulator 31 and is slidably connected to the support rail 32. The glue dispensing mechanism 40 includes a cylinder, a fixed seat and a glue dispensing needle. The cylinder is arranged on the fixed seat and is rotatably connected to the fixed seat. The end of the cylinder is provided with a glue dispensing needle; the fixed seat is also provided with an adjustment mechanism, which drives the cylinder to rotate to achieve the circumferential movement of the glue dispensing needle. In this embodiment, a control pump is provided in the cylinder, and the glue in the cylinder can be pumped out from the glue dispensing needle by the control pump. The adjustment mechanism can be a manipulator, or a transmission member such as a gear or a pulley, as long as the adjustment mechanism can drive the cylinder to rotate. When it is necessary to dispense glue on the inner wall of the lens barrel, the glue dispensing needle needs to be bent and set, and the end of the glue dispensing needle is close to the inner wall of the lens barrel. The glue in the cylinder is pumped out from the glue dispensing needle by the control pump, and the cylinder rotates with the glue dispensing needle, thereby completing a circle of glue dispensing on the inner wall of the lens barrel.

[0066] The lens assembly device also includes a curing mechanism 50, which includes a support frame 51, a curing lamp 52 and a pressing assembly 53. The support frame 51 is mounted on the transfer slide rail 12, and the curing lamp 52 and the pressing assembly 53 are arranged on the support frame 51. After the dispensing is completed, the lens barrel a can slide to the bottom of the support frame 51 along with the lens barrel material tray 11, and then the pressing assembly 53 presses and fixes the lens to be cured. The pressing assembly 53 includes a pressing cylinder 531 and a pressing head 532. The pressing head 532 can extend into the lens barrel a and press the lens. The curing lamp 52 is located on one side of the pressing assembly 53, and irradiates the lens barrel a to cure the glue on the lens barrel a.

[0067] In this embodiment, the lens barrel material tray 11 is arranged in an array with multiple discharge positions, each of which can be used to place the lens barrel a, there are multiple pressing heads 532, the multiple pressing heads 532 are arranged in a row, and are arranged corresponding to the discharge positions in a horizontal row of the lens barrel material tray 11, and there are multiple curing lamps 52, the multiple curing lamps 52 are arranged in a row and are arranged in parallel with the pressing head 532. While the pressing head 532 is pressing, the curing lamp 52 on one side can irradiate the lens being pressed, so that the glue on the lens is cured. Among them, the curing lamp 52 is a UV lamp, and the principle of UV lamp curing is to use the energy of ultraviolet rays to trigger a chemical reaction, so that the liquid glue or coating is quickly cured in a short time. When the glue or coating is exposed to a UV light source, the energy of ultraviolet rays will trigger the decomposition of the photoinitiator in the glue, and produce active substances such as free radicals or cations. These active substances will react chemically with the monomers or prepolymers in the glue to form a cross-linked network, so that the glue or coating is quickly cured.

[0068] In this embodiment, since the lens barrel material tray 11 is arranged in an array with multiple rows and columns of material placement positions, when the lens assembly equipment assembles the lens, it first assembles multiple lenses and completes the dispensing, and then performs a unified glue curing process. The curing of the glue is divided into two steps, the first step is to perform preliminary curing, and the second step is to perform re-curing after the preliminary curing is completed. During the preliminary curing, the pressing head 532 first presses the lens barrel a of the first column on the lens barrel material tray 11, and at this time, the curing lamp 52 is located on one side of the pressing head 532 and has not yet reached the top of the lens barrel material tray 11. At this time, the curing lamp 52 has a certain distance from the crimped lens barrel a, and the irradiation intensity is weak, which can play a role of preliminary curing for the glue in the crimped lens barrel a. After the glue is initially cured, the lens in the lens barrel a has been fixed, and at this time, the pressing head 532 is lifted and moved to press the lens barrel a of the second column. The curing lamp 52 is located at one side of the pressing head 532 and moves synchronously with the pressing head 532. When the pressing head 532 moves to press the lens barrel a of the second column, the curing lamp 52 is located directly above the lens barrel a of the first column. After the curing lamp 52 works, the glue of the lens barrel a that has been initially cured in the first column can be cured again. At this point, the glue on the lens barrel a of the first column has completed all the curing processes. At the same time, the curing lamp 52 can also irradiate the lens barrel a crimped on the second column, and play a role of initial curing for the glue in the crimped lens barrel a. The initial curing and re-curing can be carried out synchronously, which greatly improves the efficiency of the curing step of the glue of the lens barrel a. The above steps are carried out in sequence until all the lens barrels a on the lens barrel material tray 11 have completed the process of glue curing.

[0069] Among them, the main function of the pressing head 532 is to fix the lens, to prevent the lens from moving slightly during the curing process of the glue, which may lead to the production of defective lenses. After the glue in the lens barrel a is initially cured, it has played a role in fixing the lens, so after the glue in the lens barrel a is initially cured, there is no need to use the pressing head 532 for crimping. A spring is provided inside the pressing head 532, so that the pressing head forms an elastic pressing head, leaving a margin of movement, to prevent the lens in the lens barrel a from being damaged by excessive crimping force.

[0070] The lens assembly equipment in this embodiment has a high degree of automation and can be installed step by step at both ends of the lens barrel a, which greatly improves the assembly efficiency of the lens.

[0071] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lens assembly method, characterized in that: The steps include: Move the lens barrel to the assembly position so that the first end of the lens barrel faces upward, and a supporting boss is provided in the middle of the lens barrel; Assembling the third lens, first moving the third lens to just above the first end of the lens barrel, then placing the third lens into the lens barrel and abutting against the supporting boss; Assembling the first spacer, first moving the first spacer to just above the first end of the lens barrel, then placing the first spacer into the lens barrel and abutting against the third lens; Assembling the second lens, first moving the second lens to just above the first end of the lens barrel, then placing the second lens into the lens barrel and abutting against the first spacer; Assembling the first lens, first moving the first lens to the top of the first end of the lens barrel, then placing the first lens into the lens barrel and abutting against the second lens; Assembling the pressing ring, first moving the first lens to the top of the first end of the lens barrel, and then pressing the pressing ring to the first end of the lens barrel so that the pressing ring abuts against the first lens; Turning over the lens barrel so that the first end of the lens barrel faces downward and the second end of the lens barrel faces upward; Assembling the fourth lens, first moving the fourth lens to just above the second end of the lens barrel, then placing the fourth lens into the lens barrel and abutting against the third lens; Assembling the second spacer, first moving the second spacer to just above the second end of the lens barrel, then placing the second spacer into the lens barrel and abutting against the fourth lens; Assemble the fifth lens by first moving the fifth lens to just above the second end of the lens barrel, and then press-fit the fifth lens to the second end of the lens barrel so that the fifth lens abuts against the second spacer.

2. The lens assembly method according to claim 1, characterized in that: In the step of assembling the third lens, the axis of the third lens is made to coincide with the axis of the lens barrel, and then the third lens is vertically placed into the lens barrel.

3. The lens assembly method according to claim 1, wherein: In the step of assembling the pressure ring, after the pressure ring is assembled in place, glue is dispensed around the pressure ring, and after the glue is dispensed, the glue is cured; after the glue is cured, the step of flipping the lens barrel is performed.

4. The lens assembly method according to claim 1, wherein: In the step of assembling the fifth lens, after the fifth lens is assembled, glue is dispensed around one circumference of the fifth lens, and after the glue is dispensed, the glue is cured.

5. A lens assembly device, characterized in that: Used in the lens assembly method according to any one of claims 1 to 4, the lens assembly device comprises: The lens barrel loading mechanism comprises a lens barrel material tray and a transfer slide rail, wherein the lens barrel is placed in the lens barrel material tray, and the lens barrel material tray can slide along the transfer slide rail to an assembly position; The parts feeding mechanism comprises a parts tray and a feeding slide rail, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the first spacer, the second spacer and the pressure ring are sequentially placed in the parts tray, and the parts tray can slide along the feeding slide rail to an installation position, and the feeding slide rail is parallel to the transfer slide rail; The material transfer mechanism includes a transfer robot and a supporting slide rail, wherein the supporting slide rail is mounted above the loading slide rail and the transfer slide rail, and the supporting slide rail is perpendicular to the transfer slide rail and the loading slide rail. The transfer robot is slidably connected to the supporting slide rail and transfers the components on the component tray to the lens barrel on the lens barrel tray.

6. The lens assembly device according to claim 5, characterized in that: It also includes a glue dispensing mechanism, which is arranged on one side of the transfer robot and is slidably connected to the supporting slide rail.

7. The lens assembly device according to claim 5, characterized in that: It also includes a curing mechanism, which includes a support frame, a curing light and a pressing assembly. The support frame is mounted on the transfer slide rail, the curing light and the pressing assembly are arranged on the support frame, and the lens barrel material tray can slide to the bottom of the support frame.

8. The lens assembly device according to claim 7, characterized in that: The pressing assembly comprises a pressing cylinder and a pressing head, the pressing head can be inserted into the lens barrel and press the lens, and the curing lamp is located at one side of the pressing assembly and irradiates the lens barrel.

9. The lens assembly device according to claim 8, characterized in that: The lens barrel material tray array is arranged with a plurality of material discharge positions, each of which can hold a lens barrel, there are a plurality of pressing heads, the plurality of pressing heads are arranged in a row and are arranged corresponding to the material discharge positions in a horizontal row of the lens barrel material tray, and there are a plurality of curing lamps, the plurality of curing lamps are arranged in a row and are arranged parallel to the pressing heads.

10. The lens assembly device according to claim 8, characterized in that: A spring is arranged inside the pressing head.

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