Reflector vacuum splicing device and splicing method thereof

Abstract

The invention relates to the technical field of reflector splicing, in particular to a reflector vacuum splicing device and a splicing method thereof.The splicing device comprises a splicing platform, a reference guiding rule and a vacuum pump, and the reference guiding rule is used for positioning a reflector to be spliced; the splicing platform comprises at least two splicing units; each splicing unit is provided with an adsorption area; bosses and first grooves are uniformly distributed on the adsorption area, and part of the bosses are provided with through first air holes and cross-shaped second grooves; the second groove is respectively communicated with the first air hole and the first groove to form a vacuum air channel; the vacuum pump extracts gas between the boss and the reflector through the vacuum gas channel to form vacuum adsorption. The method has the advantages that the reflector is spliced through the splicing platform, the reference guiding rule and the vacuum pump, the splicing efficiency is high, the steps are simple, complex adjusting links are not needed, the reflector to be spliced only needs to be placed on the splicing platform, the posture of the reflector is adjusted through the reference guiding rule, and vacuumizing is carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of reflector splicing, and in particular to a reflector vacuum splicing device and a splicing method thereof. Background Art

[0002] Large optical reflective arrays are usually made up of several mirror units. In order to ensure the overall accuracy of large optical reflective arrays, it is necessary to ensure that the normal parallelism of the reflective surfaces of each mirror reaches the arc second level after splicing, and it is necessary to ensure that the state after splicing is stable and reliable and not easy to change. The traditional reflector splicing method is: an adjustment mechanism is set on the back support structure of each reflector unit, usually using a three-point or more adjustment method. The inclination state of each spliced ​​reflector is measured by a sensor, and the inclination state of each reflector is adjusted to within the allowable error range through the adjustment mechanism, and then the adjustment mechanism is locked to complete the high-precision parallel splicing of the reflectors. However, this splicing method has the following main disadvantages: 1. The adjustment takes a long time, and each mirror needs to be adjusted and measured multiple times during the splicing process, resulting in low efficiency and is not suitable for large-scale production. 2. It cannot ensure that the entire array is at the same height. If you want to ensure that all surfaces are at the same height, additional adjustments are required. 3. The adjustment mechanism has a certain degree of freedom and is susceptible to external interference during operation, which may cause slight changes in the adjustment mechanism, making it difficult to maintain the overall accuracy of the reflection array for a long time. Summary of the Invention

[0003] In view of this, the present invention aims to provide a vacuum splicing device for reflectors and a splicing method thereof, which completes the splicing of reflectors through a splicing platform, a reference ruler and a vacuum pump, and has high splicing efficiency, simple steps and no need for complicated adjustment links.

[0004] To achieve the above-mentioned purpose, the technical solution created by the present invention is implemented as follows: a vacuum splicing device for reflectors, comprising: a splicing platform, a reference ruler and a vacuum pump, the reference ruler is arranged on the upper surface of the splicing platform and is located on the adjacent two side edges for positioning the reflectors to be spliced; the splicing platform comprises at least two splicing units; the upper surface of each splicing unit is provided with an adsorption area; bosses and first grooves are evenly distributed on the adsorption area, and the bosses are used to contact the reflecting surface of the reflectors to be spliced; the first groove is a gas channel; a first through air hole and a cross-shaped second groove are provided on some bosses, and the first air hole is located in the center of the second groove; the second groove is connected with the first air hole and the first groove respectively to form a vacuum air channel; the first air hole is connected with the vacuum pump through the air pipe; the vacuum pump extracts the gas between the boss and the reflector through the vacuum air channel to form vacuum adsorption.

[0005] Furthermore, a third groove is provided on the lower surface of each splicing unit at a position corresponding to the first air hole, and the third groove connects all the first air holes of the corresponding splicing unit.

[0006] Furthermore, the splicing platform also includes sealing plates equal in number to the splicing units; the sealing plates are glued to the lower surface of the corresponding splicing units and cover the third groove; a second air hole is provided at the center position of each sealing plate, the second air hole is connected to the first air hole through the third groove, and the second air hole is connected to the vacuum pump through the air pipe.

[0007] Furthermore, the first air holes are symmetrically arranged along the center line of the splicing unit, and the first air holes are tapered holes.

[0008] Furthermore, the splicing platform includes four splicing units.

[0009] Furthermore, the splicing platform is formed in one piece.

[0010] Furthermore, a support frame is provided on the lower surface of the splicing platform.

[0011] Furthermore, the splicing unit also includes an installation area, which is located around the adsorption area and has connection holes evenly distributed on the installation area.

[0012] Furthermore, elongated holes are evenly distributed on the reference ruler, and the distance between two adjacent elongated holes is equal to the distance between two adjacent connecting holes; bolts are connected to the connecting holes through the elongated holes to fix the reference ruler in the installation area; the elongated holes are used to adjust the position of the reference ruler in the installation area.

[0013] A method for vacuum splicing of reflectors is implemented using the above-mentioned vacuum splicing device for reflectors, comprising the following steps: S1: The reflectors to be spliced ​​are sequentially placed in the adsorption area of ​​each splicing unit to ensure that the reflective surface of the reflector contacts the boss.

[0014] S2: Use a reference ruler to adjust the position of the reflector so that the reflector covers the first groove and the second groove of the corresponding splicing unit.

[0015] S3: Use a vacuum pump to create a vacuum so that the reflector is close to the splicing platform.

[0016] S4: Apply glue evenly on the back of the reflector to be spliced ​​and the reflector bracket, glue the reflector bracket to the back of the reflector, and after the glue is cured, turn off the vacuum pump and remove the spliced ​​reflector and reflector bracket.

[0017] The invention can achieve the following beneficial effects: 1) The present invention completes the splicing of reflectors through a splicing platform, a reference ruler and a vacuum pump. The splicing efficiency is high, the steps are simple, and no complicated adjustment steps are required. The reflectors to be spliced ​​only need to be placed on the splicing platform, the reference ruler is used to position the reflectors, and then vacuum is applied.

[0018] 2) The present invention uses a grinding process for the boss to ensure that its surface accuracy meets the flatness and roughness requirements of the reflector, thereby ensuring that the reflectors to be spliced ​​are located at the same horizontal reference and achieving a high splicing parallelism.

[0019] 3) The overall accuracy of the reflectors spliced ​​by the reflector vacuum splicing device of the present invention can be maintained for a long time, and it can be approximately considered that the reflector bracket and the reflector are rigidly connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings: Figure 1 2 is a schematic structural diagram of gluing a reflector to a reflector bracket by using a reflector vacuum splicing device according to an embodiment of the present invention; Figure 2 is a front view of a splicing unit provided according to an embodiment of the present invention; Figure 3 is a rear view of a splicing unit provided according to an embodiment of the present invention; Figure 4 is a rear view of a splicing unit provided according to an embodiment of the present invention without a sealing plate; Figure 5 2 is a schematic structural diagram of a reference ruler provided according to an embodiment of the present invention.

[0021] The reference numerals include: 1. splicing platform; 11. splicing unit; 111. adsorption area; 112. installation area; 113. boss; 114. first groove; 115. first air hole; 116. second groove; 117. third groove; 12. sealing plate; 121. second air hole; 2. reference ruler; 21. elongated hole; 3. support frame; 4. reflector; 5. reflector bracket. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation of the present invention.

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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 a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0026] The present invention will be described in detail below with reference to the embodiments.

[0027] like Figures 1 to 5 As shown, an embodiment of the present invention provides a vacuum mirror splicing device comprising a splicing platform 1, two reference rulers 2, a support frame 3, and a vacuum pump. The splicing platform 1 is fixed to the support frame 3. The reference rulers 2 are disposed on the upper surface of the splicing platform 1 and on two adjacent sides, with the two reference rulers 2 arranged at right angles. They are used to position the mirrors 4 to be spliced.

[0028] In this embodiment, the splicing platform 1 includes four splicing units 11 and four sealing plates 12. Each splicing unit 11 has an adsorption area 111 and a mounting area 112 on its upper surface. The mounting areas 112 are located on two adjacent sides of the outer side of the adsorption area 111. The mounting areas 112 of two adjacent splicing units 11 are aligned with each other, forming a U-shaped mounting area around the splicing platform 1. Connection holes are evenly distributed on the mounting areas 112. In this embodiment, the connection holes are threaded.

[0029] The adsorption area 111 is evenly distributed with bosses 113 and first grooves 114, which are arranged in a staggered manner to form a grid-like structure. The bosses 113 are used to contact the reflective surface of the reflector 4 to be spliced. The first grooves 114 serve as air passages. Some bosses 113 are provided with cross-shaped second grooves 116 and first air holes 115 extending therethrough. The first air hole 115 is located at the center of the second groove 116. The first air hole 115 connects all the first grooves 114 in the adsorption area 111 through the second groove 116, forming a vacuum air passage.

[0030] The first pores 115 are symmetrically arranged along mutually perpendicular center lines of the adsorption region 111 with the geometric center of the adsorption region 111 as the origin, and the spacing between adjacent first pores 115 is equal. The first pores 115 are tapered or straight.

[0031] In this embodiment, the four bosses 113 on the adsorption area 111 of each splicing unit 11 are each provided with a first air hole 115 and a second groove 116. The four bosses 113 are symmetrically arranged along two mutually perpendicular center lines of the adsorption area 111, with the geometric center of the adsorption area 111 as the origin, to ensure uniform pressure transmission in the vacuum air passage.

[0032] On the lower surface of each splicing unit 11 , a third groove 117 is provided at a position corresponding to the first air hole 115 , and the third groove 117 connects all the first air holes 115 of the corresponding splicing unit 11 .

[0033] The sealing plate 12 is glued to the lower surface of the corresponding splicing unit 11 and covers the third groove 117, so that an air chamber is formed between the sealing plate 12 and the third groove 117. The air chamber reduces the number of air pipes directly connecting the splicing unit 11 to the vacuum pump, thereby increasing system reliability.

[0034] Each sealing plate 12 is provided with a second air hole 121 extending through the center. This second air hole 121 communicates with the first air hole 115 via the third groove 117, and further with the vacuum air passage. The second air hole 121 is connected to a vacuum pump via an air pipe. The vacuum pump extracts air between the boss 113 and the reflector 4 through the second air hole 121 and the vacuum air passage, creating a vacuum that secures the reflector 4 to the boss 113.

[0035] Boss 113 is ground to ensure that its surface flatness and roughness meet the installation requirements of reflector 4. The flatness of boss 113 must ensure that the normal parallelism of the overall reflective surface of the assembled reflector 4 reaches 0.01 mm. In this embodiment, the surface flatness of boss 113 is 0.005 mm, and the roughness is Ra 1.6 μm.

[0036] In this embodiment, a grid-shaped weight-reducing groove is further provided on the lower surface of the splicing unit 11 to reduce the weight of the splicing unit 11 .

[0037] The reference ruler 2 has multiple elongated holes 21 evenly distributed throughout it. The distance between two adjacent elongated holes 21 is equal to the distance between two adjacent connecting holes. Bolts pass through the elongated holes 21 and connect with the connecting holes, securing the reference ruler 2 to the mounting area 112. The elongated holes 21 are used to adjust the position of the reference ruler 2 within the mounting area 112. In this embodiment, the reference ruler 2 is made of aluminum alloy.

[0038] The present invention will now describe the reflector vacuum splicing device provided by the present invention with reference to the accompanying drawings and taking the splicing of four reflectors 4 as a specific embodiment.

[0039] In this embodiment, the size of each reflector 4 is 500 mm×500 mm, and four reflectors 4 need to be spliced ​​into a 1 m×1 m whole.

[0040] The splicing platform 1 measures 1.2m (length) x 1.2m (width) x 0.04m (thickness) and is composed of four splicing units 11, each measuring 0.6m (length) x 0.6m (width) x 0.04m (thickness). Each splicing unit 11 has an adsorption area 111 measuring 0.5m x 0.5m. The four splicing units 11 form a 1m x 1m splicing area for four reflectors 4. The four adsorption areas 111 are symmetrically distributed along the horizontal and vertical centerlines of the splicing platform 1, with the geometric center of the splicing platform 1 as the origin.

[0041] Each adsorption area 111 is evenly distributed with bosses 113 and first grooves 114, which are staggered to form a grid structure. The grid structure includes 25 bosses 113 arranged in a 5-row x 5-column matrix. Five first grooves 114 are arranged horizontally and five vertically, each with a width of 2 mm. The number of first grooves 114, through the grid-like gas channels formed, ensures that the vacuum adsorption force is evenly transmitted to the reflective surface of the reflector 4, maintaining its adsorption on the vacuum adsorption platform.

[0042] On each adsorption area 111, the four bosses 113 are provided with a first air hole 115 and a cross-shaped second groove 116. The four first air holes 115 are symmetrically arranged along the horizontal center line and vertical center line of the adsorption area 111 with the geometric center of the adsorption area 111 as the origin. The first air hole 115 is located at the center of the second groove 116. The four first air holes 115 connect all the first grooves 114 of the adsorption area 111 through the second groove 116 to form a vacuum air passage. A third groove 117 is provided on the lower surface of the adsorption area 111. The sealing plate 12 is glued to the lower surface of the corresponding splicing unit 11 and covers the third groove 117, so that an air chamber is formed between the sealing plate 12 and the third groove 117. A penetrating second air hole 121 is provided at the center of the sealing plate 12, which is connected to the first air hole 115 through the third groove 117 and then connected to the vacuum air passage. The vacuum pump extracts the gas between the boss 113 and the reflector 4 through the second air hole 121 and the vacuum air channel, forming a vacuum adsorption, so that the reflector 4 is closely attached to and adsorbed on the boss 113 .

[0043] Two reference rulers 2 are mounted on adjacent sides of the vacuum adsorption platform, forming a right-angled stop. The reference rulers 2 measure 1m x 0.1m x 0.015m and are made of aluminum alloy. The reference rulers 2 are provided with elongated holes 21. Once the reflector 4 to be spliced ​​is positioned, the waist-shaped holes are used to adjust the position of the reflector 4 so that it covers the first and second grooves 114, 116 of the corresponding splicing unit 11. The reflector 4 is then bolted to the corresponding connection holes on the splicing unit 11.

[0044] A method for vacuum splicing of reflectors is implemented using the above-mentioned vacuum splicing device for reflectors, comprising the following steps: S1 : placing the reflective mirrors 4 to be spliced ​​in the adsorption areas 111 of the splicing units 11 in sequence, ensuring that the reflective surface of the reflective mirrors 4 contacts the bosses 113 .

[0045] S2: Use the reference ruler 2 to adjust the position of the reflector 4 so that the reflector 4 covers the first groove 114 and the second groove 116 of the corresponding splicing unit 11.

[0046] S3: Use a vacuum pump to evacuate the mirror 4 so that it is in close contact with and adsorbed on the boss 113 .

[0047] Specifically, turn on the vacuum air pump to evacuate the air, and the vacuum degree will gradually change. Observe whether all the reflectors 4 to be spliced ​​are tightly attached to the vacuum adsorption boss 113. There may be leaks between two adjacent reflectors 4. The leaks need to be located based on the sound and location of the leaks. If there are leaks, seal them with sealing fillers (such as silicone rubber or vacuum grease). Observe the pressure gauge reading of the vacuum pump in real time. When it reaches 10 Pa (predetermined pressure), turn off the vacuum pump, then read the pressure gauge and observe for three hours. If the reading remains unchanged, it is considered that there is no leak, and proceed to the next step. If the reading changes, continue to check for leaks and seal them with sealing materials (sealing fillers). When all leaks have been checked, proceed to the next step of gluing.

[0048] S4: Apply glue evenly on the back of the reflector 4 to be spliced ​​and the reflector bracket 5, glue the reflector bracket 5 to the back of the reflector 4, and after the glue is cured, turn off the vacuum pump and remove the spliced ​​reflector 4 and reflector bracket 5.

[0049] The mirror vacuum splicing device of the present invention completes the splicing of the reflector 4, eliminating the need for adjustment mechanisms. Consequently, the reflective surface of the reflector 4 is unaffected by external factors, maintaining overall accuracy over time. Free modal testing of the connected reflector bracket 5 and reflector 4 revealed a first-order frequency exceeding 150 Hz, demonstrating sufficient connection rigidity between the reflector bracket 5 and reflector 4, ensuring stability of the two components.

[0050] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A reflector vacuum splicing device, characterized in that: include: A splicing platform, a reference ruler and a vacuum pump; the reference ruler is provided on the upper surface of the splicing platform and is located on two adjacent sides of the splicing platform for positioning the reflectors to be spliced; the vacuum pump is connected to the splicing platform; The splicing platform includes at least two splicing units; the upper surface of each splicing unit is provided with an adsorption area; bosses and first grooves are evenly distributed on the adsorption area, and the bosses and first grooves are arranged in a staggered manner to form a grid structure; wherein the bosses are used to contact the reflective surface of the reflector; and the first grooves are gas channels; A cross-shaped second groove and a first air hole passing through the boss are provided on some of the bosses; the first air hole is located at the center of the second groove; the second groove is connected to the first air hole and the first groove respectively to form a vacuum air passage; the first air hole is connected to the vacuum pump through an air pipe; The vacuum pump extracts the gas between the boss and the reflector through a vacuum air passage to form a vacuum adsorption, so that the reflector is closely attached to and adsorbed on the boss.

2. The reflector vacuum splicing device according to claim 1, characterized in that: A third groove is provided on the lower surface of each of the splicing units at a position corresponding to the first air hole, and the third groove connects all the first air holes corresponding to the splicing units.

3. The reflector vacuum splicing device according to claim 2, characterized in that: The splicing platform also includes sealing plates with the same number as the splicing units; the sealing plates are glued to the lower surface of the corresponding splicing units and cover the third grooves; a second air hole is provided at the center position of each sealing plate, the second air hole is connected to the first air hole through the third groove, and the second air hole is connected to the vacuum pump through an air pipe.

4. The reflector vacuum splicing device according to claim 1, characterized in that: The first pores are symmetrically arranged along two mutually perpendicular center lines of the adsorption region with the geometric center of the adsorption region as the origin; the first pores are tapered holes.

5. The reflector vacuum splicing device according to claim 1, characterized in that: The splicing platform is formed by integrally processing with aluminum alloy.

6. The reflector vacuum splicing device according to claim 1, characterized in that: It also includes a support frame, and the splicing platform is connected to the support frame.

7. The reflector vacuum splicing device according to claim 1, characterized in that: Each of the splicing units further includes an installation area, which is located on two adjacent sides outside the adsorption area. The installation areas of two adjacent splicing units are butted against each other; and connection holes are evenly distributed on the installation area.

8. The reflector vacuum splicing device according to claim 7, characterized in that: There are long holes evenly distributed on the reference ruler, and the distance between two adjacent long holes is equal to the distance between two adjacent connecting holes; bolts are connected to the connecting holes through the long holes to fix the reference ruler to the installation area; the long holes are used to adjust the position of the reference ruler in the installation area.

9. The reflector vacuum splicing device according to claim 1, characterized in that: The splicing platform includes four splicing units.

10. A method for vacuum splicing of reflectors, characterized in that: The method is implemented by using the reflector vacuum splicing device according to any one of claims 1 to 9, comprising the following steps: S1: placing the reflectors to be spliced ​​in the adsorption areas of the splicing units in sequence, ensuring that the reflective surfaces of the reflectors are in contact with the bosses; S2: using the reference ruler to adjust the position of the reflector so that the reflector covers all the first grooves and second grooves corresponding to the splicing unit; S3: Using the vacuum pump to evacuate the mirror so that the mirror is closely attached to and adsorbed on the splicing platform; S4: evenly apply glue on the back of the reflector to be spliced ​​and the reflector bracket, glue the reflector bracket to the back of the reflector, and after the glue is cured, turn off the vacuum pump and remove the spliced ​​reflector and reflector bracket.

Images