Prism lens attaching device and method

Abstract

The invention discloses a prism lens attaching device and an attaching method thereof, and relates to the technical field of lens attaching. The prism comprises a metal framework and a lens, the metal framework comprises a plurality of attaching surfaces, the attaching device of the prism lens is used for gluing and fixing the lens and the attaching surfaces, the attaching device comprises an attaching unit, the attaching unit comprises a first positioning mechanism, a second positioning mechanism and a pneumatic adsorption assembly, and the first positioning mechanism is used for positioning the metal framework. The second positioning mechanism is provided with an adsorption positioning surface, the adsorption positioning surface is matched with the attaching surface, and the adsorption positioning surface is used for positioning and adsorbing the lens. The pneumatic adsorption assembly is connected with the second positioning mechanism and can control the adsorption positioning surface to adsorb or release the lens. The second positioning mechanism can move in the direction close to or away from the first positioning mechanism, and the second positioning mechanism can be fixedly connected with the first positioning mechanism. The prism lens attaching device can ensure the attaching precision and improve the good rate of products.

Description

Technical Field

[0001] The present invention relates to the technical field of lens attachment, and in particular to an attachment device and an attachment method for a prism lens. Background Art

[0002] All prisms in the lidar industry, including triangular prisms, quadrangular prisms, or pentagonal prisms, etc., are fixed by glue when attaching lenses. During the gluing process, the angular accuracy and planar accuracy will affect the gluing effect.

[0003] In the prior art, after fixing the metal skeleton in the attachment device for prism lenses, glue is applied to the attachment surface of the metal skeleton, the lens is manually attached to the lens, the lens is pressed by an aluminum block, and then a rubber band is used to wrap around the metal skeleton and the lens for curing and fitting. This attachment method cannot guarantee the attachment accuracy of the lens, resulting in a low yield rate of the product. Summary of the Invention

[0004] The purpose of the present invention is to provide an attachment device and an attachment method for a prism lens to ensure the attachment accuracy of the prism lens and improve the yield rate of the product.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] An attachment device for a prism lens, the prism includes a metal skeleton and a lens, the metal skeleton includes a plurality of attachment surfaces, and the attachment device is used to adhesively fix the lens to the attachment surface. Among them, the attachment device includes an attachment unit, and the attachment unit includes:

[0007] A first positioning mechanism for positioning the metal skeleton;

[0008] A second positioning mechanism, on which an adsorption positioning surface is provided, the adsorption positioning surface is adapted to the attachment surface, and the adsorption positioning surface is used to position and adsorb the lens; the second positioning mechanism can move in a direction close to or away from the first positioning mechanism, and the second positioning mechanism can be fixedly connected to the first positioning mechanism;

[0009] A pneumatic adsorption assembly is connected to the second positioning mechanism, and the pneumatic adsorption assembly can control the adsorption positioning surface to adsorb or release the lens.

[0010] As an optional solution of the attachment device for the prism lens, the second positioning mechanism includes a positioning block, an adsorption positioning surface is provided on the positioning block, an air cavity is provided inside the positioning block, the adsorption positioning surface is communicated with the air cavity through a plurality of adsorption holes, and the pneumatic adsorption assembly is communicated with the air cavity and can make the adsorption positioning surface adsorb or release the lens.

[0011] As an alternative solution for the attaching device of the prism lens, the pneumatic adsorption assembly includes a vacuum generator, and the gas source is communicated with the air cavity through the vacuum generator.

[0012] As an alternative solution for the attaching device of the prism lens, the pneumatic adsorption assembly further includes a pressure regulating filter, which is arranged between the gas source and the vacuum generator and is used for regulating the gas pressure provided by the gas source and filtering impurities.

[0013] As an alternative solution for the attaching device of the prism lens, the pneumatic adsorption assembly further includes a switching valve, which is used for controlling the communication between the gas source and the vacuum generator.

[0014] As an alternative solution for the attaching device of the prism lens, limit blocks are arranged on both opposite sides of the adsorption positioning surface, and the two limit blocks are used for restricting the displacement of the lens in the first direction;

[0015] One end of the adsorption positioning surface is provided with a fixing block, and the lens abuts against the fixing block, which can restrict the displacement of the lens in the second direction, and the first direction is perpendicular to the second direction.

[0016] As an alternative solution for the attaching device of the prism lens, a first positioning pin and a first threaded hole are arranged on the first positioning mechanism, a first positioning hole and a first connecting hole are arranged on the fixing block, the first positioning pin is matched with the first positioning hole to position the first positioning mechanism and the second positioning mechanism; a first screw passes through the first connecting hole and is screwed with the first threaded hole, so that the first positioning mechanism and the second positioning mechanism are attached and fixed.

[0017] As an alternative solution for the attaching device of the prism lens, the first positioning mechanism includes a positioning base and a fixing member, a plurality of second positioning pins are arranged on the positioning base, and a plurality of second positioning holes corresponding to the plurality of second positioning pins one by one are arranged at the bottom of the metal skeleton; a second threaded hole is arranged on the positioning base, a second connecting hole is arranged on the metal skeleton, and the fixing member passes through the second connecting hole and is connected with the second threaded hole.

[0018] As an alternative solution for the attaching device of the prism lens, the fixing member includes a rotating head, a connecting column and a stud, the connecting column is arranged between the rotating head and the stud, the diameter of the connecting column is larger than the diameter of the stud, the second connecting hole includes a first through hole and a second through hole, the inner diameter of the first through hole is larger than the inner diameter of the second through hole, the end surface of the connecting column close to the stud abuts against the connecting surface of the first through hole and the second through hole, and the stud is screwed with the second threaded hole.

[0019] As an alternative solution for the attaching device of the prism lens, the attaching unit is provided with one.

[0020] As an alternative solution for the attaching device of the prism lens, the attaching unit includes one first positioning mechanism and a plurality of second positioning mechanisms. The first positioning mechanism is circumferentially provided with a plurality of attaching positions corresponding one-to-one to the plurality of attaching surfaces, and the plurality of second positioning mechanisms are arranged corresponding one-to-one to the plurality of attaching positions.

[0021] As an alternative solution for the attaching device of the prism lens, a plurality of attaching units are provided, and each attaching unit includes one first positioning mechanism and one second positioning mechanism.

[0022] As an alternative solution for the attaching device of the prism lens, a direction positioning hole is provided at the bottom of the metal frame, and a direction positioning pin is provided on the first positioning mechanism. The direction positioning pin cooperates with the direction positioning hole; in different attaching units, the positions of the direction positioning pins on the first positioning mechanism are different.

[0023] A method for attaching a prism lens, which is applied to the attaching device of the prism lens according to any one of the above solutions. The method for attaching the prism lens includes the following steps:

[0024] Apply glue on the attaching surface of the metal frame, and position the metal frame with the applied glue on the first positioning mechanism;

[0025] Position the lens on the adsorption positioning surface, and control the adsorption positioning surface to adsorb the lens through the pneumatic adsorption assembly;

[0026] The second positioning mechanism moves towards the first positioning mechanism. After the lens is attached to the attaching surface, fix the second positioning mechanism and the first positioning mechanism so that the lens is adhesively connected to the attaching surface;

[0027] When the glue is cured, control the adsorption positioning surface to release the lens through the pneumatic adsorption assembly;

[0028] After the adsorption positioning surface releases the lens, release the fixation between the second positioning mechanism and the first positioning mechanism, and move the second positioning mechanism away from the first positioning mechanism.

[0029] Advantages of the present invention:

[0030] The attaching device for prism lenses provided by the present invention adhesively fixes the lenses on the attaching surface of the metal skeleton through an attaching unit. The attaching unit includes a first positioning mechanism, a second positioning mechanism, and a pneumatic adsorption component. The metal skeleton is positioned on the first positioning mechanism, and an adsorption positioning surface for positioning and adsorbing the lenses is provided on the second positioning mechanism. The pneumatic adsorption component can control the adsorption or release of the lenses by the adsorption positioning surface. The second positioning mechanism can move to fit the lenses with the attaching surface. When the second positioning mechanism moves in the direction close to the first positioning mechanism, the pneumatic adsorption component controls the adsorption positioning surface to adsorb the lenses to achieve the fixation of the lenses. After the lenses are aligned and fitted with the attaching surface, the second positioning mechanism and the first positioning mechanism are fixed. After the glue on the attaching surface cures, the pneumatic adsorption component controls the adsorption positioning surface to release the lenses. After the second positioning mechanism and the first positioning mechanism are unfixed, the second positioning mechanism is removed, and the attachment of the lenses is completed. During the process of attaching the lenses, the angle of the adsorption positioning surface is adapted to the angle of the attaching surface. The adsorption positioning surface always adsorbs the positioned lenses, and the lenses remain stationary. The angle of the lenses is always the angle of the adsorption positioning surface that adsorbs the lenses, ensuring the consistency of the initial accuracy of the lenses. Moreover, during the curing process of the glue, the first positioning mechanism and the second positioning mechanism are tightly fitted together and fixed, thus ensuring the attachment accuracy between the lenses and the attaching surface, further ensuring the flat aperture of the prism, and improving the yield rate of the product.

[0031] The attaching method for prism lenses provided by the present invention is applied to the above-mentioned attaching device for prism lenses. After applying glue on the attaching surface of the metal skeleton, the metal skeleton is positioned on the first positioning mechanism, and then the lenses are positioned and adsorbed on the adsorption positioning surface. After the second positioning mechanism drives the lenses to move and fit with the attaching surface, the second positioning mechanism and the first positioning mechanism are fixed. After the glue cures, the lenses are attached to the attaching surface. Then, the pneumatic adsorption component controls the adsorption positioning surface to release the lenses, and then the second positioning mechanism is removed. This attaching method for prism lenses is simple to operate, has higher accuracy in attaching lenses, ensures the flat accuracy of the prism, and improves the yield rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of the first attaching device for prism lenses provided in Embodiment 1 of the present invention;

[0033] Figure 2 is a schematic structural diagram of the attaching unit provided in Embodiment 1 of the present invention;

[0034] Figure 3 is an exploded schematic diagram of the attaching unit and the prism provided in Embodiment 1 of the present invention;

[0035] Figure 4 is a schematic structural diagram of the first attaching device for prism lenses provided in Embodiment 1 of the present invention with the second positioning mechanism and the prism hidden;

[0036] Figure 5 It is a schematic structural diagram of the metal framework provided in the first embodiment of the present invention;

[0037] Figure 6 It is a schematic diagram of the state where a plurality of lenses are simultaneously attached by the attaching device for the second prism lens provided in the first embodiment of the present invention;

[0038] Figure 7 It is a schematic structural diagram of the positioning base of the attaching device for the second prism lens provided in the first embodiment of the present invention;

[0039] Figure 8 It is a flowchart of the attaching method for the prism lens provided in the second embodiment of the present invention.

[0040] In the figure:

[0041] 100, metal framework; 101, attaching surface; 102, second positioning hole; 103, second connection hole; 1031, first perforation; 1032, second perforation; 104, direction positioning hole;

[0042] 200, lens;

[0043] 1, base; 11, first mounting plate; 111, guiding groove; 12, second mounting plate;

[0044] 2, attaching unit; 21, first positioning mechanism; 211, positioning base; 2111, first positioning pin; 2112, first threaded hole; 2113, second positioning pin; 2114, second threaded hole; 2115, direction positioning pin; 2116, docking groove; 212, fixing member; 2121, rotating head; 2122, connecting column; 2123, stud; 22, second positioning mechanism; 221, positioning block; 2211, adsorption positioning surface; 222, limiting block; 223, fixing block; 2231, first positioning hole; 2232, first connection hole; 2233, docking convex strip; 23, vacuum generator; 24, air source; 25, pressure regulating filter; 26, hand slide valve. Detailed Description of the Invention

[0045] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0046] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0047] Unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature is at a lower horizontal level than the second feature.

[0049] The technical solution of the present invention will be further described below with reference to the drawings and through specific embodiments.

[0050] Embodiment 1:

[0051] As Figures 1 - 3As shown in the figure, the prism includes a metal framework 100 and lenses 200. The metal framework 100 includes a plurality of attachment surfaces 101, and each attachment surface 101 is attached with a lens 200 correspondingly to form a prism. The prism includes different shapes such as a triangular prism, a quadrangular prism, or a pentagonal prism. The metal framework 100 of the triangular prism includes three attachment surfaces 101, and each attachment surface 101 needs to be attached with a lens 200. The main cross-section of the metal framework 100 is triangular. If the main cross-section is an equilateral triangle, the angles of the three attachment surfaces 101 are the same, that is, the attachment angles of the three lenses 200 are the same; if the three angles of the main cross-section of the triangle are different, the angles of the three attachment surfaces 101 are different, that is, the attachment angles of the three lenses 200 are different. Correspondingly, the metal framework 100 of the quadrangular prism has four attachment surfaces 101 and needs to be attached with four lenses 200; the metal framework 100 of the pentagonal prism has five attachment surfaces 101 and needs to be attached with five lenses 200.

[0052] This embodiment provides an attachment device for prism lenses, which is used to adhesively fix the lens 200 to the attachment surface 101 and is applicable to prisms with different structures such as triangular prisms, quadrangular prisms, or pentagonal prisms. Figure 1 As shown in the figure, the first attachment device for a triangular prism provided by this embodiment can be correspondingly changed according to the structure of the metal framework 100 of the quadrangular prism when attaching prisms with different shapes such as a quadrangular prism or a pentagonal prism.

[0053] The attachment device includes an attachment unit 2. The attachment unit 2 includes a first positioning mechanism 21, a second positioning mechanism 22, and a pneumatic adsorption assembly. The first positioning mechanism 21 is used to position the metal framework 100; an adsorption positioning surface 2211 is provided on the second positioning mechanism 22, and the adsorption positioning surface 2211 is adapted to the attachment surface 101. The adsorption positioning surface 2211 is used to position and adsorb the lens 200. The pneumatic adsorption assembly is connected to the second positioning mechanism 22, and the pneumatic adsorption assembly can control the adsorption positioning surface 2211 to adsorb or release the lens 200. The second positioning mechanism 22 moves in a direction close to or away from the first positioning mechanism 21 so that after the lens 200 is fitted to the attachment surface 101, it is fixedly connected to the first positioning mechanism 21. When attaching the lens 200, first apply glue on the attachment surface 101 and position it on the first positioning mechanism 21; after the lens 200 is positioned on the adsorption positioning surface 2211, the pneumatic adsorption assembly is used to control the adsorption positioning surface 2211 to adsorb the lens 200 to fix the lens 200; then the second positioning mechanism 22 drives the lens 200 to move until the lens 200 is aligned and fitted with its corresponding attachment surface 101, and then the second positioning mechanism 22 and the first positioning mechanism 21 are fixed, so that the lens 200 and the attachment surface 101 remain in a fitted state. After waiting for the glue to cure, the lens 200 and the attachment surface 101 are adhesively fixed. Then, the pneumatic adsorption assembly is used to control the adsorption positioning surface 2211 to release the lens 200, and finally the second positioning mechanism 22 is removed; that is, the attachment of the lens 200 is completed.

[0054] Specifically, the first positioning mechanism 21 includes a positioning base 211 and a fixing member 212. A plurality of second positioning pins 2113 are provided on the positioning base 211, and a plurality of second positioning holes 102 corresponding to the plurality of second positioning pins 2113 one by one are provided at the bottom of the metal frame 100. First, the plurality of second positioning holes 102 on the metal frame 100 are matched with the plurality of second positioning pins 2113 one by one, realizing the positioning of the metal frame 100 on the positioning base 211. A second threaded hole 2114 is provided on the positioning base 211, and a second connection hole 103 is provided on the metal frame 100. The fixing member 212 passes through the second connection hole 103 and is connected to the second threaded hole 2114. The second connection hole 103 is provided at the center of the metal frame 100. The metal frame 100 is fixed to the positioning base 211 by the fixing member 212 passing through the center of the metal frame 100, so as to ensure that when the second positioning mechanism 22 drives the lens 200 to align and fit with the adsorption surface, the metal frame 100 will not be displaced, thereby not affecting the attachment accuracy and bonding strength.

[0055] In this embodiment, the fixing member 212 includes a rotating head 2121, a connecting column 2122, and a stud 2123. The connecting column 2122 is provided between the rotating head 2121 and the stud 2123. The diameter of the connecting column 2122 is larger than that of the stud 2123. The second connection hole 103 includes a first through hole 1031 and a second through hole 1032. The inner diameter of the first through hole 1031 is larger than that of the second through hole 1032. The end face of the connecting column 2122 close to the stud 2123 abuts against the connection surface of the first through hole 1031 and the second through hole 1032, and the stud 2123 is screwed into the second threaded hole 2114. The stud 2123 of the fixing member 212 passes through the first through hole 1031 and the second through hole 1032 in sequence and is screwed into the second threaded hole 2114 to fix the metal frame 100 to the positioning base 211. At this time, the connecting column 2122 is pressed against the connection surface of the first through hole 1031 and the second through hole 1032, and the metal frame 100 is pressed against the positioning base 211, realizing the effective fixation of the metal frame 100 on the positioning base 211, ensuring that the initial position of the attachment surface 101 does not change each time the metal frame 100 is fixed, ensuring the accuracy and consistency of the lens 200 attachment, and thus ensuring the excellent rate of the product. The setting of the rotating head 2121 facilitates the tightening operation of the fixing member 212.

[0056] Specifically, the second positioning mechanism 22 includes a positioning block 221. An adsorption positioning surface 2211 is provided on the positioning block 221. An air cavity is provided inside the positioning block 221. The adsorption positioning surface 2211 is communicated with the air cavity through a plurality of adsorption holes. The pneumatic adsorption assembly is communicated with the air cavity and can adsorb or release the lens 200 on the adsorption positioning surface 2211.

[0057] In this embodiment, limit blocks 222 are provided on both opposite sides of the adsorption and positioning surface 2211. The two limit blocks 222 are used to limit the displacement of the lens 200 in the first direction; a fixing block 223 is provided at one end of the adsorption and positioning surface 2211. The lens 200 abuts against the fixing block 223, which can limit the displacement of the lens 200 in the second direction. The first direction is perpendicular to the second direction. As Figure 3 shown, the first direction is the left - right direction, and the second direction is the up - down direction. The sides of the two limit blocks 222 close to each other are respectively used to position the opposite sides of the lens 200 to limit the movement of the lens 200 in the left - right direction. The lower end of the lens 200 abuts against the upper surface of the fixing block 223 to limit the movement of the lens 200 in the up - down direction.

[0058] The lens 200 abuts against the adsorption and positioning surface 2211. After positioning the lens 200 through the two limit blocks 222 and the fixing block 223, the lens 200 is adsorbed by the pneumatic adsorption component to limit the movement of the lens 200 in the third direction. The third direction is perpendicular to the first direction and the second direction. As Figure 3 shown, the third direction is the front - back direction, so that the initial position of the lens 200 is fixed and will not change, further ensuring the attachment accuracy and consistency of the lens 200.

[0059] Further, the pneumatic adsorption component includes a vacuum generator 23. The air source 24 is connected to the air cavity through the vacuum generator 23. The vacuum generator 23 is a highly efficient, clean, and economical small - sized vacuum element that uses a positive - pressure air source 24 to generate negative pressure. Since negative pressure needs to be generated in the air cavity when adsorbing the lens 200 on the adsorption and positioning surface 2211, and positive pressure needs to be generated in the air cavity when releasing the lens 200 from the adsorption and positioning surface 2211, the vacuum generator 23 is connected to the air source 24 to achieve the conversion of positive and negative pressures in the air cavity.

[0060] To ensure that the air entering the air cavity is stable, clean, and dry, and to avoid contaminating or damaging the lens 200. The pneumatic adsorption component further includes a pressure - regulating filter 25. The pressure - regulating filter 25 is provided between the air source 24 and the vacuum generator 23 and is used to regulate the gas pressure provided by the air source 24 and filter impurities. The pressure - regulating filter 25 includes a pressure - regulating valve and a filter. The pressure - regulating valve is used to regulate the gas pressure entering the vacuum generator 23, thereby regulating the adsorption force of the adsorption and positioning surface 2211 on the lens 200 to ensure that the adsorption force is appropriate, the lens 200 will not move, and the lens 200 will not be damaged. The filter is used to filter impurities in the gas entering the vacuum generator 23 to prevent impurities from being adsorbed on the lens 200 through the air cavity and affecting the quality of the lens 200.

[0061] Further, the pneumatic adsorption assembly further includes a switching valve for controlling the connection between the air source 24 and the vacuum generator 23. The switching valve controls whether the air source 24 supplies air into the vacuum generator 23 to avoid waste of gas.

[0062] After the lens 200 is fixed, the second positioning mechanism 22 moves towards the first positioning mechanism 21, so that the lens 200 fits with its corresponding attachment surface 101. In order to ensure that the lens 200 can be firmly bonded to the glue on the attachment surface 101, it is necessary to wait for the glue to cure. To ensure the accuracy of the fitting position between the lens 200 and the attachment surface 101, and to prevent relative displacement between the lens 200 and the attachment surface 101 during the waiting for the glue to cure, the first positioning mechanism 21 is provided with a first positioning pin 2111 and a first threaded hole 2112, and the fixing block 223 is provided with a first positioning hole 2231 and a first connection hole 2232. The first positioning pin 2111 cooperates with the first positioning hole 2231 to position the first positioning mechanism 21 and the second positioning mechanism 22; a first screw passes through the first connection hole 2232 and is screwed into the first threaded hole 2112, so that the first positioning mechanism 21 and the second positioning mechanism 22 are attached and fixed. When the second positioning mechanism 22 moves near the first positioning mechanism 21, after aligning the first positioning hole 2231 with the first positioning pin 2111, it continues to move towards the first positioning mechanism 21, so that the lens 200 fits with the attachment surface 101; when the lens 200 fits with the attachment surface 101, the first screw is passed through the first connection hole 2232 and screwed into the first threaded hole 2112, so that the first positioning mechanism 21 and the second positioning mechanism 22 are relatively fixed in a state where the lens 200 and the attachment surface 101 remain in contact and will not move, thus ensuring the attachment accuracy.

[0063] The side surface of the positioning base 211 opposite to the fixing block 223 is the attachment position. The first positioning pin 2111 and the first threaded hole 2112 are both provided at the attachment position. The attachment position is provided with a docking groove 2116. The first positioning hole 2231 and the first connection hole 2232 are provided on the side surface of the fixing block 223 opposite to the attachment position. A docking protrusion 2233 is also provided on the side surface of the fixing block 223 opposite to the attachment position. When the second positioning mechanism 22 moves until the docking protrusion 2233 is docked with the docking groove 2116 in place, the second positioning mechanism 22 cannot continue to approach the first positioning mechanism 21. At this time, the lens 200 just fits with the attachment surface 101.

[0064] In this embodiment, the attachment position and the adsorption positioning surface 2211 are relatively arranged. When moving the second positioning mechanism 22, only the second positioning mechanism 22 needs to be moved linearly, towards or away from the first positioning mechanism 21.

[0065] For a prism with the same angle of the lens 200 attached to each attachment surface 101, only one attachment unit 2 can be provided. Each attachment unit 2 includes a first positioning mechanism 21 and a second positioning mechanism 22. By rotating the direction of the metal frame 100 on the positioning base 211, different attachment surfaces 101 are sequentially located at the attachment position, and multiple lenses 200 are sequentially adsorbed on the adsorption positioning surface 2211 and attached to the attachment surface 101 located at the attachment position.

[0066] As Figure 1 shown in the first prism lens attachment device provided in this embodiment, for a prism with different angles of the lens 200 attached to each attachment surface 101, the angles of multiple attachment surfaces 101 are also different, and multiple attachment units 2 can be provided. Each attachment unit 2 corresponds to attaching one lens 200. Specifically, as Figure 4 and Figure 5 shown, a direction positioning hole 104 is provided at the bottom of the metal frame 100, and a direction positioning pin 2115 is provided on the first positioning mechanism 21. The direction positioning pin 2115 cooperates with the direction positioning hole 104 to determine the attachment surface 101 located at the attachment position. In different attachment units 2, the position of the direction positioning pin 2115 on the first positioning mechanism 21 is different, that is, the position of the direction positioning pin 2115 on the positioning base 211 is different. The attachment positions in multiple attachment units 2 are located on the same reference plane and all face the second positioning mechanism 22. The positions of the direction positioning pins 2115 on the positioning bases 211 located on the same reference line are different, so that multiple attachment surfaces 101 are sequentially located at the attachment positions in different attachment units 2, and sequential attachment of multiple attachment units 2 to multiple lenses 200 is realized.

[0067] Continue to refer to Figure 1 and Figure 4, the attaching device further includes a base 1. The base 1 includes a first mounting plate 11 and a second mounting plate 12 which are vertically arranged. Three attaching units 2 are arranged on the first mounting plate 11, and the three attaching units 2 are located on the same reference straight line. The second mounting plate 12 is used to mount the air source 24 and the vacuum generator 23. The connections of the air source 24, the vacuum generator 23 and the air cavity are all connected through air pipes (not shown in the figure) and connection joints. In this embodiment, the air outlet of the air source 24 is connected to the main air pipe, and the pressure regulating filter 25 is arranged on the main air pipe. One end of the main air pipe far from the air source 24 is connected with three branch air pipes through a four-way joint, each branch air pipe is connected to a vacuum generator 23, and the vacuum generator 23 is communicated with the air cavity through a connecting pipe and a two-way joint. The metal frame 100 is sequentially placed on the three attaching units 2 for attachment, so as to attach the three lenses 200 to the corresponding attaching surfaces 101 one by one. The direction positioning hole 104 and the direction positioning pin 2115 are used to identify the attaching surface 101 at the attaching position. If the attaching surface 101 at the attaching position of the attaching unit 2 is incorrect, the metal frame 100 cannot be positioned on the positioning base 211 of the attaching unit 2.

[0068] In order to realize the separate control of the pneumatic adsorption components in the three attaching units 2, the switching valve includes a hand slide valve 26 and a manual valve. The hand slide valve 26 is arranged on the main air pipe, and a manual valve is arranged on each branch air pipe. The hand slide valve 26 is used to control whether the air source 24 supplies air, and each manual valve is used to control whether the gas provided by the air source 24 passes through the branch air pipe where the manual valve is located, so as to control the adsorption or release of the lens 200 by the adsorption positioning surface 2211 communicated with the branch air pipe. When the hand slide valve 26 and the manual valve are opened, the gas provided by the air source 24 can pass through the vacuum generator 23, and a negative pressure is generated in the air cavity, and the adsorption positioning surface 2211 can adsorb the lens 200. When the manual valve is closed, the adsorption positioning surface 2211 releases the lens 200.

[0069] For a four-prism, four attaching units 2 can be set; correspondingly, for a five-prism, five attaching units 2 can be set.

[0070] Such as Figure 6 and Figure 7Shown is the second prism lens attachment device provided by this embodiment. For a prism with different angles of the lens 200 attached to each attachment surface 101, an attachment unit 2 can be set. The attachment unit 2 includes a first positioning mechanism 21 and a plurality of second positioning mechanisms 22. The first positioning mechanism 21 is provided with a plurality of attachment positions corresponding to the plurality of attachment surfaces 101 one by one along the circumferential direction, and the plurality of second positioning mechanisms 22 are arranged corresponding to the plurality of attachment positions one by one. When attaching the lens 200, the metal frame 100 is positioned on the positioning base 211. The positioning base 211 is provided with a plurality of attachment positions, and each attachment position corresponds to an attachment surface 101 of a metal frame 100. The metal frame 100 is positioned on the positioning base 211 and fixed by a fixing member 212. Glue can be applied to the plurality of attachment surfaces 101 simultaneously, and then the plurality of lenses 200 are respectively fixed on the plurality of second positioning mechanisms 22. At the same time, the plurality of second positioning mechanisms 22 are respectively moved towards their respective corresponding attachment positions. When the lens 200 is attached to its corresponding attachment surface 101, the plurality of second positioning mechanisms 22 are respectively fixed to their respective corresponding attachment positions, and simultaneous attachment of the plurality of lenses 200 can be achieved.

[0071] Taking a triangular prism as an example, the attachment unit 2 includes a first positioning mechanism 21 and three second positioning mechanisms 22. The positioning base 211 of the first positioning mechanism 21 includes three attachment positions corresponding to the three attachment surfaces 101 of the metal frame 100. Each attachment position is provided with a first positioning pin 2111 and a first threaded hole 2112. One attachment position corresponds to one second positioning mechanism 22. With such a setting, three lenses 200 can be respectively attached to the three attachment surfaces 101 simultaneously, or the three second positioning mechanisms 22 can be successively moved to their corresponding attachment positions to successively attach the three lenses 200. To ensure the movement trajectories of the three second positioning mechanisms 22 during movement, three guiding grooves 111 are provided on the first mounting plate 11, and guiding rods are provided at the bottom of the second positioning mechanisms 22. The guiding rods cooperate with the guiding grooves 111 to enable the three second positioning mechanisms 22 to move along their respective corresponding guiding grooves 111 towards or away from their corresponding attachment positions during movement.

[0072] Embodiment Two:

[0073] As Figure 8 shown, this embodiment also provides a method for attaching a prism lens, which is applied to the prism lens attachment device provided in Embodiment One. The method for attaching a prism lens includes the following steps:

[0074] S10. Apply glue to the attachment surface 101 of the metal frame 100, and position the metal frame 100 with glue applied on the first positioning mechanism 21.

[0075] When attaching the prism lens 200, for an attaching device provided with three attaching units 2, during attachment, first apply glue to one of the attaching surfaces 101, and this attaching surface 101 corresponds to the attaching position of the first attaching unit 2. Since it takes time for multiple attaching surfaces 101 to be attached in sequence, if waiting for too long during attachment, the glue will solidify and cannot bond with the lens 200. Therefore, it is necessary to avoid applying glue to multiple attaching surfaces 101 simultaneously. When positioning the metal frame 100 on the first positioning mechanism 21, first align the direction positioning hole 104 of the metal frame 100 with the direction positioning pin 2115, and the three second positioning holes 102 are in one-to-one correspondence and cooperation with the three second positioning pins 2113 to ensure that the attaching surface 101 coated with glue is located at the attaching position of the positioning base 211. Then insert the fixing member 212 into the first connection hole 2232, and rotate the fixing member 212 through the rotating head 2121 so that the stud 2123 is screwed with the second threaded hole 2114, thereby fixing the metal frame 100 to the positioning base 211.

[0076] For an attaching device provided with one attaching unit 2, during attachment, glue can be applied to all three attaching surfaces 101 of the metal frame 100. Align the direction positioning hole 104 of the metal frame 100 with the direction positioning pin 2115, and the three second positioning holes 102 are in one-to-one correspondence and cooperation with the three second positioning pins 2113. Then, through the fixing member 212, fix the metal frame 100 to the positioning base 211.

[0077] S20. Position the lens 200 on the adsorption positioning surface 2211, and control the adsorption positioning surface 2211 to adsorb the lens 200 through the pneumatic adsorption assembly.

[0078] First place the lens 200 on the adsorption positioning surface 2211 so that both sides of the lens 200 are respectively in contact with the two limit blocks 222, and the lower end of the lens 200 is in contact with the upper surface of the fixing block 223. Then open the manual valve on the bronchus connected to the vacuum generator 23 corresponding to the positioning block 221 where the lens 200 is located, so that a negative pressure is generated in the air chamber of this positioning block 221, and the adsorption positioning surface 2211 adsorbs the lens 200.

[0079] S30. The second positioning mechanism 22 moves towards the first positioning mechanism 21. After the lens 200 is fitted to the attaching surface 101, fix the second positioning mechanism 22 and the first positioning mechanism 21 so that the lens 200 is adhesively connected to the attaching surface 101.

[0080] The second positioning mechanism 22 moves along a straight line towards the first positioning mechanism 21. When the second positioning mechanism 22 moves near the first positioning mechanism 21, after aligning the first positioning hole 2231 with the first positioning pin 2111, it continues to move towards the first positioning mechanism 21, so that the lens 200 is attached to the attachment surface 101. After the lens 200 is attached to the attachment surface 101, the first screw is passed through the first connection hole 2232 and screwed into the first threaded hole 2112, so that the first positioning mechanism 21 and the second positioning mechanism 22 are relatively fixed in the state where the lens 200 and the attachment surface 101 are kept attached and will not move, thereby ensuring the attachment accuracy.

[0081] S40. After the glue is cured, the pneumatic adsorption assembly is used to control the adsorption positioning surface 2211 to release the lens 200.

[0082] After the first positioning mechanism 21 and the second positioning mechanism 22 are fixed, after waiting for a preset time, the manual valve is closed, and the adsorption positioning surface 2211 releases the lens 200. At this time, the lens 200 has been bonded to the attachment surface 101. This preset time is the time for the glue to be completely cured and can be determined according to the parameters of the glue used.

[0083] S50. After the adsorption positioning surface 2211 releases the lens 200, the second positioning mechanism 22 is released from the fixation with the first positioning mechanism 21, and the second positioning mechanism 22 is moved away from the first positioning mechanism 21.

[0084] After it is determined that the adsorption positioning surface 2211 releases the lens 200, the first screw is rotated to screw out the first screw, and then the second positioning mechanism 22 is moved away from the first positioning mechanism 21 along a straight line to move the second positioning mechanism 22 to the initial position.

[0085] For the attaching device provided with three attaching units 2, after attaching the first lens 200 according to the above steps, the metal frame 100 is positioned on the positioning base 211 of the second attaching unit 2, and the second lens 200 is attached through the second attaching unit 2. After the second lens 200 is attached, the metal frame 100 is positioned on the positioning base 211 of the third attaching unit 2 according to the above steps, and the third lens 200 is attached through the third attaching unit 2.

[0086] For the attaching device provided with one attaching unit 2, the three lenses 200 can be attached to the metal frame 100 simultaneously according to the above steps.

[0087] The attaching method of the prism lens provided by the present invention is applied to the attaching device of the above-mentioned prism lens. After applying glue on the attaching surface 101 of the metal frame 100, the metal frame 100 is positioned on the first positioning mechanism 21, and then the lens 200 is positioned and adsorbed on the adsorption positioning surface 2211. After the second positioning mechanism 22 drives the lens 200 to move and fit with the attaching surface 101, the second positioning mechanism 22 and the first positioning mechanism 21 are fixed. After the glue is cured, the lens 200 is attached to the attaching surface 101. Then, the pneumatic adsorption assembly is used to control the adsorption positioning surface 2211 to release the lens 200, and then the second positioning mechanism 22 is removed. This attaching method of the prism lens is simple to operate, has higher precision in attaching the lens 200, ensures the planar precision of the prism, and improves the excellent rate of the product.

[0088] The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. Attachment device for a prism lens. The prism includes a metal skeleton (100) and a lens (200). The metal skeleton (100) includes a plurality of attachment surfaces (101). The attachment device is used to adhesively fix the lens (200) to the attachment surfaces (101). Characterized in that, The attachment device includes an attachment unit (2). The attachment unit (2) includes: A first positioning mechanism (21) for positioning the metal skeleton (100); A second positioning mechanism (22). An adsorption positioning surface (2211) is provided on the second positioning mechanism (22). The adsorption positioning surface (2211) is adapted to the attachment surface (101) and is used to position and adsorb the lens (200). The second positioning mechanism (22) can move in a direction closer to or farther from the first positioning mechanism (21), and the second positioning mechanism (22) can be fixedly connected to the first positioning mechanism (21); A pneumatic adsorption assembly connected to the second positioning mechanism (22). The pneumatic adsorption assembly can control the adsorption positioning surface (2211) to adsorb or release the lens (200).

2. The attachment device for a prism lens according to claim 1, Characterized in that, The second positioning mechanism (22) includes a positioning block (221). An adsorption positioning surface (2211) is provided on the positioning block (221). An air cavity is provided inside the positioning block (221). The adsorption positioning surface (2211) is communicated with the air cavity through a plurality of adsorption holes. The pneumatic adsorption assembly is communicated with the air cavity and can make the adsorption positioning surface (2211) adsorb or release the lens (200).

3. The attachment device for a prism lens according to claim 2, Characterized in that, The pneumatic adsorption assembly includes a vacuum generator (23). The air source (24) is communicated with the air cavity through the vacuum generator (23).

4. The attachment device for a prism lens according to claim 3, Characterized in that, The pneumatic adsorption assembly further includes a pressure regulating filter (25). The pressure regulating filter (25) is arranged between the air source (24) and the vacuum generator (23) and is used to regulate the gas pressure provided by the air source (24) and filter impurities.

5. The attachment device for a prism lens according to claim 4, Characterized in that, The pneumatic adsorption assembly further includes a switching valve. The switching valve is used to control the communication between the air source (24) and the vacuum generator (23).

6. The attachment device for a prism lens according to claim 2, Characterized in that, Limit blocks (222) are provided on both opposite sides of the adsorption positioning surface (2211). The two limit blocks (222) are used to limit the displacement of the lens (200) in the first direction; A fixing block (223) is provided at one end of the adsorption positioning surface (2211). The lens (200) abuts against the upper surface of the fixing block (223), which can limit the displacement of the lens (200) in the second direction. The first direction is perpendicular to the second direction.

7. The attaching device for a prism lens according to claim 6, characterized in that, a first positioning pin (2111) and a first threaded hole (2112) are provided on the first positioning mechanism (21), a first positioning hole (2231) and a first connection hole (2232) are provided on the fixing block (223), the first positioning pin (2111) cooperates with the first positioning hole (2231) to position the first positioning mechanism (21) and the second positioning mechanism (22); a first screw passes through the first connection hole (2232) and is screwed with the first threaded hole (2112) to make the first positioning mechanism (21) and the second positioning mechanism (22) adhere and be fixed.

8. The attaching device for a prism lens according to claim 2, characterized in that, the first positioning mechanism (21) includes a positioning base (211) and a fixing member (212), a plurality of second positioning pins (2113) are provided on the positioning base (211), and a plurality of second positioning holes (102) corresponding to the plurality of second positioning pins (2113) one by one are provided at the bottom of the metal frame (100); a second threaded hole (2114) is provided on the positioning base (211), a second connection hole (103) is provided on the metal frame (100), and the fixing member (212) passes through the second connection hole (103) and is connected to the second threaded hole (2114).

9. The attaching device for a prism lens according to claim 8, characterized in that, the fixing member (212) includes a rotating head (2121), a connecting column (2122) and a stud (2123), the connecting column (2122) is arranged between the rotating head (2121) and the stud (2123), the diameter of the connecting column (2122) is larger than the diameter of the stud (2123), the second connection hole (103) includes a first through hole (1031) and a second through hole (1032), the inner diameter of the first through hole (1031) is larger than the inner diameter of the second through hole (1032), the end surface of the connecting column (2122) close to the stud (2123) abuts against the connecting surface of the first through hole (1031) and the second through hole (1032), and the stud (2123) is screwed with the second threaded hole (2114).

10. The attaching device for a prism lens according to any one of claims 1-9, characterized in that, one attaching unit (2) is provided.

11. The attaching device for a prism lens according to claim 10, characterized in that, the attaching unit (2) includes one first positioning mechanism (21) and a plurality of second positioning mechanisms (22), the first positioning mechanism (21) is provided with a plurality of attaching positions corresponding to the plurality of attaching surfaces (101) one by one along the circumferential direction, and the plurality of second positioning mechanisms (22) are arranged corresponding to the plurality of attaching positions one by one.

12. The attaching device for a prism lens according to any one of claims 1-9, characterized in that, A plurality of the attaching units (2) are provided, and each attaching unit (2) includes one of the first positioning mechanisms (21) and one of the second positioning mechanisms (22).

13. The attaching device for a prism lens according to claim 12, wherein, a direction positioning hole (104) is provided at the bottom of the metal frame (100), a direction positioning pin (2115) is provided on the first positioning mechanism (21), and the direction positioning pin (2115) cooperates with the direction positioning hole (104); in different attaching units (2), the positions of the direction positioning pins (2115) on the first positioning mechanism (21) are different.

14. A method for attaching a prism lens, wherein, applied to the attaching device for a prism lens according to any one of claims 1-13, the method for attaching a prism lens includes the following steps: Apply glue to the attaching surface (101) of the metal frame (100), and position the metal frame (100) with the applied glue on the first positioning mechanism (21); Position the lens (200) on the adsorption positioning surface (2211), and control the adsorption positioning surface (2211) to adsorb the lens (200) through the pneumatic adsorption assembly; The second positioning mechanism (22) moves towards the first positioning mechanism (21). After the lens (200) is attached to the attaching surface (101), fix the second positioning mechanism (22) and the first positioning mechanism (21) so that the lens (200) is adhesively connected to the attaching surface (101); When the glue is cured, control the adsorption positioning surface (2211) to release the lens (200) through the pneumatic adsorption assembly; After the adsorption positioning surface (2211) releases the lens (200), release the fixation between the second positioning mechanism (22) and the first positioning mechanism (21), and move the second positioning mechanism (22) away from the first positioning mechanism (21).

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