Micro-nano structure forming device in optical element machining

Abstract

The utility model belongs to the technical field of optical elements, and discloses a micro-nano structure forming device in optical element processing, which comprises a base, a support plate arranged on the base, a heating structure arranged at the top of the support plate, an upper pressure head arranged above the heating structure, a push rod arranged on the base, a self-balancing structure arranged at the top end of the push rod, and a heat insulation block arranged on the self-balancing structure. A square groove is upwards formed in the bottom face of the heat insulation block, a first through hole is formed in the bottom of the square groove in a penetrating mode, a nut is rotationally arranged on the top face of the heat insulation block, a screw is spirally arranged in the nut, and the lower end of the screw is located in the square groove and provided with a limiting plate. A flow-limiting die holder is arranged on the rotating table, a die pressing cavity is formed in the flow-limiting die holder, and a second reinforcing plate, a die plate and a first reinforcing plate are placed in the die pressing cavity. The amorphous alloy is pushed out of the mold pressing cavity by rotating the rotating table, the amorphous alloy is conveniently taken out, operation is easy and convenient, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical element technical field, especially relate to a micro - nano structure forming device in optical element processing. BACKGROUND

[0002] With the rapid development of modern optical technology, the performance requirement of optical element is increasing. Optical element with micro - nano structure, such as microlens array, diffractive optical element etc. because of its unique optical characteristics, has been widely used in optical communication, imaging, sensing etc. As a kind of efficient, low - cost micro - nano structure processing method, heat pressing forming has the advantage of being able to batch copy micro - nano structure, and has received extensive attention of researchers.

[0003] In the Chinese invention patent with the publication number CN117181880A, a heat pressing forming die and amorphous alloy micro - fluidic core heat pressing forming device are disclosed, which include heating structure and moulding structure. The heating structure includes fixedly arranged heat insulation support and heating block arranged on the heat insulation support;The moulding structure includes upper pressure head, lower pressure head below the upper pressure head, flow limiting die holder connected with the lower pressure head and template in the flow limiting die holder, the heating block is between the upper pressure head and the lower pressure head, and the upper pressure head and the lower pressure head are slidably arranged relative to the heating block, and the target object is stacked on the template;The upper pressure head moves downward and presses the heating block, the lower pressure head moves upward and makes the target object abut the heating block, so that the heat of the heating block is conducted to the target object, and under the action of the lower pressure head, the target object replicates the micro - nano structure of the template. The micro - nano structure on the template can be copied to the amorphous alloy at one time, and the heat pressing efficiency of the amorphous alloy is improved.

[0004] For the related technology in the above, the inventor believes that the following defects exist: in the above scheme, after the heat pressing work is completed, because the amorphous alloy is completely located in the flow limiting die holder and completely fits, when the cooled amorphous alloy is taken out, the flow limiting die holder needs to be taken out first, then the amorphous alloy in the flow limiting die holder can be taken out, and then the flow limiting die holder, the second reinforcing plate, the template, the new amorphous alloy and the first reinforcing plate are sequentially installed, and the next heat pressing work is carried out. The process is complicated, and the processing efficiency is affected. UTILITY MODEL CONTENT

[0005] In order to solve the above problems, the utility model provides a micro - nano structure forming device in optical element processing.

[0006] The technical purpose is achieved by the following technical scheme: a micro-nano structure forming device in optical element processing, comprising a heat insulation block arranged on the self-balancing structure, a square groove is formed upward on the bottom surface of the heat insulation block, a first through hole is formed through the groove bottom, a nut is rotationally arranged on the top surface of the heat insulation block outside the first through hole, a screw is helically arranged in the nut, the lower end of the screw is arranged in the square groove and provided with a limiting plate with the same cross section profile as the square groove, a rotating table is rotationally arranged on the heat insulation block, the rotating table is used for driving the nut to rotate, a second through hole is formed through the center of the rotating table, the upper end of the screw passes through the second through hole and is provided with a lifting table, a flow limiting die holder is arranged on the rotating table, a die pressing cavity is arranged in the flow limiting die holder, and a second reinforcing plate, a die plate and a first reinforcing plate are arranged in the die pressing cavity.

[0007] By adopting the above technical scheme, the heat insulation block, the nut, the screw, the rotating table, the lifting table and the flow limiting die holder are arranged, after the hot pressing and cooling work is completed, the rotating table is rotated to drive the nut to rotate, thereby driving the screw and the lifting table at the upper end of the screw to rise, the second reinforcing plate, the die plate, the amorphous alloy and the first reinforcing plate in the die pressing cavity are pushed up, the amorphous alloy is pushed out of the die pressing cavity, and the amorphous alloy is convenient to take out; then new amorphous alloy and the first reinforcing plate are put in, the rotating table is reversely rotated to drive the screw and the lifting table at the upper end of the screw to descend, thereby driving the amorphous alloy to enter the die pressing cavity, and preparing for the next hot pressing work, the whole operation is simple and convenient, and the work efficiency is greatly improved.

[0008] Further, the rotating table comprises a rotating ring rotationally arranged on the heat insulation plate, a partition plate is horizontally arranged in the rotating ring, a second through hole is formed in the partition plate, and a containing groove for containing the lifting table is formed in the top surface of the partition plate outside the second through hole.

[0009] By adopting the above technical scheme, the second through hole and the containing groove are arranged on the partition plate, so that the lifting table can be contained in the containing groove, and the top surface of the lifting table is prevented from protruding from the top surface of the partition plate.

[0010] Further, the cross section profile of the containing groove is smaller than that of the second reinforcing plate.

[0011] By adopting the above technical scheme, the second reinforcing plate is directly in contact with the partition plate, so that when the forming device performs the hot pressing work, the pressure generated by the upper pressing head and the pushing rod is transmitted to the whole equipment through the partition plate, the lifting table is prevented from being stressed, and the screw is prevented from being stressed to damage the threads on the screw and the nut.

[0012] Further, an arc gear rack is arranged on the inner wall of the bottom of the rotating ring, a transmission gear is rotationally arranged on the heat insulation block, a driving gear is arranged on the nut, one side of the transmission gear is engaged with the arc gear rack, and the other side is engaged with the driving gear.

[0013] By adopting the technical scheme, the circular-arc rack, the transmission gear and the driving gear are arranged, the rotating ring is rotated, the transmission gear is driven to rotate by the circular-arc rack, the driving gear and the nut are driven to rotate, the number of teeth of the circular-arc rack is greater than that of the transmission gear, the number of teeth of the transmission gear is greater than that of the driving gear, and therefore the nut can rotate multiple rounds when the rotating ring rotates one round, so that the labor-saving effect is achieved.

[0014] Further, the rotating ring is arranged on the heat insulation block, and the rotating ring is arranged on the heat insulation block.

[0015] By adopting the technical scheme, the circular-arc rack, the transmission gear and the driving gear are arranged, the rotating ring is rotated, the transmission gear is driven to rotate by the circular-arc rack, the driving gear and the nut are driven to rotate, the number of teeth of the circular-arc rack is greater than that of the transmission gear, the number of teeth of the transmission gear is greater than that of the driving gear, and therefore the nut can rotate multiple rounds when the rotating ring rotates one round, so that the labor-saving effect is achieved.

[0016] Further, the rotating ring is arranged on the heat insulation block, and the rotating ring is arranged on the heat insulation block.

[0017] By adopting the technical scheme, the circular-arc rack, the transmission gear and the driving gear are arranged, the rotating ring is rotated, the transmission gear is driven to rotate by the circular-arc rack, the driving gear and the nut are driven to rotate, the number of teeth of the circular-arc rack is greater than that of the transmission gear, the number of teeth of the transmission gear is greater than that of the driving gear, and therefore the nut can rotate multiple rounds when the rotating ring rotates one round, so that the labor-saving effect is achieved.

[0018] Further, the rotating ring is arranged on the heat insulation block, and the rotating ring is arranged on the heat insulation block.

[0019] By adopting the technical scheme, the circular-arc rack, the transmission gear and the driving gear are arranged, the rotating ring is rotated, the transmission gear is driven to rotate by the circular-arc rack, the driving gear and the nut are driven to rotate, the number of teeth of the circular-arc rack is greater than that of the transmission gear, the number of teeth of the transmission gear is greater than that of the driving gear, and therefore the nut can rotate multiple rounds when the rotating ring rotates one round, so that the labor-saving effect is achieved.

[0020] Further, the rotating ring is arranged on the heat insulation block, and the rotating ring is arranged on the heat insulation block.

[0021] By adopting the technical scheme, the circular-arc rack, the transmission gear and the driving gear are arranged, the rotating ring is rotated, the transmission gear is driven to rotate by the circular-arc rack, the driving gear and the nut are driven to rotate, the number of teeth of the circular-arc rack is greater than that of the transmission gear, the number of teeth of the transmission gear is greater than that of the driving gear, and therefore the nut can rotate multiple rounds when the rotating ring rotates one round, so that the labor-saving effect is achieved.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1、In the application, by setting the heat insulation block, nut, screw rod, rotating table, lifting platform, flow limiting die base, after completing the hot pressing cooling work, rotating the rotating table drives the nut to rotate, thereby driving the screw rod and the lifting platform at the upper end thereof to ascend, pushing the second reinforcing plate, the die plate, the amorphous alloy and the first reinforcing plate in the die cavity to ascend, pushing the amorphous alloy out of the die cavity, facilitating the taking out of the amorphous alloy; then the new amorphous alloy and the first reinforcing plate are put in, the rotating table is reversely rotated to drive the screw rod and the lifting platform at the upper end thereof to descend, thereby driving the amorphous alloy to enter the die cavity, preparing for the next hot pressing work, the whole operation is simple and convenient, and the work efficiency is greatly improved;

[0024] 2、In the application, by setting the circular arc rack, transmission gear and driving gear, rotating the rotating ring, the circular arc rack drives the transmission gear to rotate, thereby driving the driving gear and the nut to rotate, wherein the number of teeth of the circular arc rack is greater than that of the transmission gear, and the number of teeth of the transmission gear is greater than that of the driving gear, so that the nut can rotate multiple turns when the rotating ring rotates one turn, and the labor-saving effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the overall structure schematic view of the embodiment of the utility model;

[0026] Figure 2 is the structure schematic view of the heat insulation block, rotating table and flow limiting die base of the embodiment of the utility model;

[0027] Figure 3 is the sectional structure schematic view of Figure 2 ;

[0028] Figure 4 is the structure schematic view of the heat insulation block of the embodiment of the utility model;

[0029] Figure 5 is the structure schematic view of the rotating table of the embodiment of the utility model.

[0030] In the drawing: 1, base; 2, support plate; 3, heating structure; 4, upper pressing head; 5, pushing rod; 6, self-balancing structure; 10, heat insulation block; 11, square groove; 12, first through hole; 13, nut; 14, transmission gear; 15, driving gear; 16, annular enclosing wall; 17, annular groove; 18, air inlet hole; 19, air inlet nozzle; 20, screw rod; 21, limiting plate; 22, lifting platform; 30, rotating table; 31, rotating ring; 32, partition plate; 33, second through hole; 34, accommodating groove; 35, circular arc rack; 36, annular boss; 37, circular groove; 38, first arc-shaped air hole; 40, flow limiting die base; 41, second reinforcing plate; 42, die plate; 43, first reinforcing plate; 44, second arc-shaped air hole; A, amorphous alloy. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0032] As shown in Figures 1-5 The present application discloses a micro-nano structure forming device in optical element processing, which comprises a base 1, a support plate 2 arranged on the base 1, a heating structure 3 arranged on the top of the support plate 2, an upper pressing head 4 arranged above the heating structure 3, a push rod 5 arranged on the base 1, a self-balancing structure 6 arranged at the top end of the push rod 5, a heat insulation block 10, a rotating table 30 and a flow limiting die holder 40 arranged on the self-balancing structure 6. The flow limiting die holder 40 is provided with a die pressing cavity, and the die pressing cavity is placed with a second reinforcing plate 41, a die plate 42 and a first reinforcing plate 43. The heat insulation block 10 is rotatably provided with a screw rod 20, and the upper end of the screw rod 20 penetrates through the rotating table 30 and is provided with a lifting table 22. After the hot pressing and cooling work is completed, the rotating table 30 is rotated to drive the screw rod 20 and the lifting table 22 at the upper end of the screw rod 20 to rise, and the second reinforcing plate 41, the die plate 42, the amorphous alloy A and the first reinforcing plate 43 in the die pressing cavity are lifted, so that the amorphous alloy A is conveniently taken out.

[0033] Specifically, a square groove 11 is formed upward on the bottom surface of the heat insulation block 10, a first through hole 12 is formed through the groove bottom of the square groove 11, a nut 13 is rotatably arranged on the top surface of the heat insulation block 10 outside the periphery of the first through hole 12, a drive gear 15 is arranged on the nut 13, a screw rod 20 is spirally arranged in the nut 13, the lower end of the screw rod 20 is arranged in the square groove 11 and is provided with a limiting plate 21, the cross-sectional contour of the limiting plate 21 is the same as that of the square groove 11, which is used to limit the rotation of the screw rod 20, and ensures that the screw rod 20 can only move in the vertical direction when the nut 13 rotates. A transmission gear 14 is rotatably arranged on the heat insulation block 10, one side of the transmission gear 14 is engaged with the drive gear 15, the transmission gear 14 is rotated to drive the drive gear 15 and the nut 13 to rotate, so as to drive the screw rod 20 and the lifting table 22 at the upper end of the screw rod 20 to rise and fall.

[0034] The rotary table 30 is arranged on the heat insulation block 10, and the rotary table 30 comprises a rotary ring 31 and a partition plate 32. The bottom inner wall of the rotary ring 31 is provided with a circular arc rack 35, the circular arc rack 35 is engaged with the other side of the transmission gear 14, the rotary ring 31 is rotated, and the transmission gear 14 is driven to rotate through the circular arc rack 35. The number of teeth of the circular arc rack 35 is greater than the number of teeth of the transmission gear 14, and the number of teeth of the transmission gear 14 is greater than the number of teeth of the driving gear 15, so that the driving gear 15 can rotate multiple turns when the rotary ring 31 rotates one turn, and the labor-saving effect is achieved. The partition plate 32 is horizontally arranged in the rotary ring 31, the second through hole 33 is formed in the partition plate 32, the upper end of the screw rod 20 passes through the second through hole 33 and is provided with the lifting table 22. The receiving groove 34 is arranged on the top surface of the partition plate 32 outside the periphery of the second through hole 33, and the receiving groove 34 is used for accommodating the lifting table 22. The depth of the receiving groove 34 is greater than the thickness of the lifting table 22, so that the top surface of the lifting table 22 does not protrude from the top surface of the partition plate 32. The cross-sectional profile of the receiving groove 34 is greater than the cross-sectional profile of the lifting table 22, and the cross-sectional profile of the receiving groove 34 is smaller than the cross-sectional profile of the second reinforcing plate 41, so that the second reinforcing plate 41 directly contacts the partition plate 32. When the forming device is working, the pressure generated by the upper pressing head 4 and the push rod 5 is transmitted to the heat insulation block 10 and the rotary table 30 through the partition plate 32, so that the lifting table 22 is not stressed, and the screw rod 20 and the thread on the nut 13 are not damaged due to stress. In specific use, the circular groove 37 is formed between the upper part of the rotary ring 31 and the partition plate 32, the flow limiting die holder 40 is arranged on the circular groove 37, and the outer diameter of the flow limiting die holder 40 is equal to the inner diameter of the rotary ring 31, so that the flow limiting die holder 40 is limited in the horizontal direction. The annular enclosing wall 16 is arranged on the heat insulation block 10, the annular groove 17 is arranged on the inner wall of the annular enclosing wall 16, the annular protrusion 36 is arranged on the bottom outer wall of the rotary ring 31 and matched with the annular groove 17, so that the rotary ring 31 can only rotate relative to the heat insulation block 10.

[0035] Further, in order to accelerate the cooling of the flow limiting die holder 40 and the amorphous alloy A in the flow limiting die holder 40, the top surface of the heat insulation block 10, the bottom surface of the partition plate 32 and the inner wall of the rotating ring 31 form an air cavity, the heat insulation block 10 is internally provided with an air inlet hole 18, one end of the air inlet hole 18 is located at the side wall of the heat insulation block 10 and is provided with an air inlet nozzle 19, the other end is located at the top surface of the heat insulation block 10 and is in communication with the air cavity, four circumferentially arranged first arc-shaped air holes 38 are formed in the partition plate 32, and four circumferentially arranged second arc-shaped air holes 44 are formed in the flow limiting die holder 40 and penetrate upward from the bottom surface. The air inlet nozzle 19 is connected with an external gas source, and the gas sequentially passes through the air inlet hole 18, the air cavity, the first arc-shaped air hole 38, the second arc-shaped air hole 44, and the heat of the flow limiting die holder 40 is taken away through the gas flow, so as to accelerate the cooling of the flow limiting die holder 40 and the amorphous alloy A in the flow limiting die holder 40. In addition, the first arc-shaped air hole 38 and the second arc-shaped air hole 44 are located on concentric circles with equal radii, so that the first arc-shaped air hole 38 and the second arc-shaped air hole 44 can also be communicated after the rotating table 30 is rotated, and the cooling effect of the flow limiting die holder 40 and the amorphous alloy A in the flow limiting die holder 40 is ensured.

[0036] In the present embodiment, the use principle of the micro-nano structure forming device in optical element processing is that after the hot pressing work is completed, the air inlet nozzle 19 is ventilated to accelerate the cooling of the flow limiting die holder 40 and the amorphous alloy A in the flow limiting die holder 40. After the cooling work is completed, the rotating table 30 is rotated to drive the nut 13 to rotate, so as to drive the screw rod 20 and the lifting table 22 at the upper end of the screw rod 20 to rise, push the second reinforcing plate 41, the template 42, the amorphous alloy A and the first reinforcing plate 43 in the die pressing cavity to rise, push the amorphous alloy A out of the die pressing cavity, and take out the amorphous alloy A; then new amorphous alloy A and the first reinforcing plate 43 are put in, the rotating table 30 is reversely rotated to drive the screw rod 20 and the lifting table 22 at the upper end of the screw rod 20 to descend, so as to drive the amorphous alloy A to enter the die pressing cavity, and prepare for the next hot pressing work. The whole operation is simple and convenient, and the working efficiency is greatly improved.

[0037] The preferred embodiments of the present application are described above, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solutions falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. A micro / nano structure forming device for optical element processing, comprising a base (1), a support plate (2) disposed on the base (1), a heating structure (3) disposed on the top of the support plate (2), an upper pressure head (4) disposed above the heating structure (3), a push rod (5) disposed on the base (1), and a self-balancing structure (6) disposed at the top of the push rod (5), characterized in that: A heat insulation block (10) is provided on the self-balancing structure (6). A square groove (11) is opened on the bottom surface of the heat insulation block (10). A first through hole (12) is opened through the bottom of the square groove (11). A nut (13) is rotatably provided on the top surface of the heat insulation block (10) around the first through hole (12). A screw (20) is spirally provided inside the nut (13). The lower end of the screw (20) is in the square groove (11) and is provided with a limiting plate (21) with the same cross-sectional profile as the square groove (11). A rotating platform (30) is rotatably mounted on the heat insulation block (10). The rotating platform (30) is used to drive the nut (13) to rotate. A second through hole (33) is provided through the center of the rotating platform (30). The upper end of the screw (20) passes through the second through hole (33) and is provided with a lifting platform (22). A flow-limiting mold base (40) is provided on the rotating platform (30). A molding cavity is provided inside the flow-limiting mold base (40). A second reinforcing plate (41), a template (42), and a first reinforcing plate (43) are placed inside the molding cavity.

2. The micro / nano structure forming device for optical element processing according to claim 1, characterized in that: The rotating platform (30) includes a rotating ring (31) rotatably mounted on a heat insulation plate. A partition (32) is horizontally arranged inside the rotating ring (31). A second through hole (33) is opened on the partition (32), and a receiving groove (34) for accommodating the lifting platform (22) is opened on the top surface of the partition (32) outside the second through hole (33).

3. The micro / nano structure forming device for optical element processing according to claim 2, characterized in that: The cross-sectional profile of the receiving groove (34) is smaller than that of the cross-sectional profile of the second reinforcing plate (41).

4. The micro / nano structure forming device for optical element processing according to claim 2, characterized in that: The rotating ring (31) has an arc rack (35) on its bottom inner wall, the heat insulation block (10) has a transmission gear (14) rotatably mounted on it, and the nut (13) has a drive gear (15). One side of the transmission gear (14) meshes with the arc rack (35), and the other side meshes with the drive gear (15).

5. The micro / nano structure forming device for optical element processing according to claim 4, characterized in that: The heat insulation block (10) is provided with an annular wall (16), the inner wall of the annular wall (16) is provided with an annular groove (17), and the bottom outer wall of the rotating ring (31) is provided with an annular boss (36) that cooperates with the annular groove (17).

6. The micro / nano structure forming device for optical element processing according to claim 5, characterized in that: A circular groove (37) is formed between the upper part of the rotating ring (31) and the partition plate (32), and the flow limiting mold base (40) is placed on the circular groove (37). The outer diameter of the flow limiting mold base (40) is equal to the inner diameter of the rotating ring (31).

7. The micro / nano structure forming device for optical element processing according to claim 5, characterized in that: The top surface of the heat insulation block (10), the bottom surface of the partition plate (32), and the inner wall of the rotating ring (31) form an air cavity. An air inlet (18) is provided inside the heat insulation block (10). One end of the air inlet (18) is located on the side wall of the heat insulation block (10) and is provided with an air inlet nozzle (19). The other end is located on the top surface of the heat insulation block (10) and communicates with the air cavity. The air inlet nozzle (19) is connected to an external air source. Several first arc-shaped ventilation holes (38) in a circular array are provided on the partition plate (32).

8. The micro / nano structure forming device for optical element processing according to claim 7, characterized in that: The flow-limiting mold base (40) has a plurality of second arc-shaped vent holes (44) arranged in a circular array from bottom to top. The first arc-shaped vent hole (38) and the second arc-shaped vent hole (44) are located on concentric circles with equal radii.

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