A device and method for manufacturing a micro-pyramid array structure working mold belt

Abstract

The present invention discloses a device for manufacturing a working mold belt of a micro-cone array structure and a manufacturing method thereof, comprising a cylinder and a mother mold, wherein the mother mold is arranged on the inner surface of the cylinder, and the mother mold is provided with a micro-cone array structure on a side surface facing away from the inner surface of the cylinder, the cylinder comprises a first arc-shaped support plate, a second arc-shaped support plate, a hinge, and a locking device, one end of the first arc-shaped support plate and the second arc-shaped support plate are rotatably connected by a hinge, and the other end of the first arc-shaped support plate and the second arc-shaped support plate are connected and locked by a locking device, and the mother mold is provided with a first opening and closing edge and a second opening and closing edge, and the first opening and closing edge is closely matched with the second opening and closing edge. The present invention can give the mother mold sufficient rigidity, reduce the damage to the mother mold caused by deformation such as twisting and bending during the demoulding process, and is conducive to the demoulding of the mother mold, thereby increasing the frequency of reuse of the mother mold, and effectively improving and enhancing the quality level of the splicing seam of the working mold belt obtained thereby.

Description

Technical Field

[0001] The present invention relates to the field of manufacturing a working mode belt of a micro-pyramid array structure, and in particular to a device for manufacturing a working mode belt of a micro-pyramid array structure and a manufacturing method thereof. Background Art

[0002] Microprismatic reflective materials have better retro-reflective properties and can provide drivers and passengers with a longer visual distance. They are currently widely used in the fields of personal, vehicle and road traffic safety protection to protect people's travel. The core of microprismatic reflective materials is a micro-cone array structure that retro-reflects incident light. In actual production, there are a variety of processes or methods to form this micro-cone array structure on one side of the polymer film material.

[0003] For example, the invention patent with authorization announcement number CN101561523B and name “Method for producing reflective film with micro-prism array structure” discloses a method for forming a micro-prism array structure by using photosensitive resin. The method uses an annular working mold belt with a micro-prism array structure on its surface as a basis, and coats photosensitive resin on a resin film. The side of the resin film coated with photosensitive resin is tightly attached to the annular belt-shaped mold and is simultaneously irradiated with a UV light source, so that the photosensitive resin filling the gaps in the micro-prism array structure is quickly solidified, and the resin film is peeled off from the annular belt-shaped mold to obtain a micro-prismatic reflective film.

[0004] For example, the authorization announcement number CN102176082B, entitled "Method for producing reflective film with micro-prism array structure", discloses a method for forming a micro-prism array structure using hot-melt resin. The method is based on a reciprocating annular mold, and hot-melt resin is coated on the surface of the resin film. By applying pressure, the hot-melt resin in a molten state fills the gaps of the micro-prism array structure on the surface of the annular mold. After synchronous cooling, the hot-melt resin is shaped, and the resin film is peeled off from the annular mold to obtain a reflective film with a micro-prism array structure. At the same time, many patents disclose production equipment for producing reflective films with micro-prism array structures based on annular mold belts. Therefore, the annular belt-shaped working mold has become a key core component for producing micro-prismatic reflective films.

[0005] As is known to all, precision parts with microstructures can be accurately replicated by electroforming, and the cylindrical working mold tape obtained by electroforming a master mold with a micro-corner pyramid array structure has become the first choice in the industry. The invention patent application with application publication number CN104962956A and titled "A Process for Making a Cylindrical Micro-Prism Mold" discloses a method for making a cylindrical mold with a micro-prism array structure on the surface, which includes: butting the two sides of the flat mold to make a first cylindrical mold; obtaining a second cylindrical mold by electroforming on the outside of the first cylindrical mold; obtaining a cylindrical working mold by electroforming on the inside of the second cylindrical mold, etc. The working mold belt of this method is obtained through multiple copies, which not only has a complex process and low efficiency, but also affects the dimensional accuracy and morphological accuracy of the micro-corner cone array structure, so that the retroreflective performance of the reflective film obtained thereby is significantly reduced; and when obtaining the second cylindrical mold, the first cylindrical mold as the cathode is stripped off, and when obtaining the cylindrical working mold belt, the second cylindrical mold as the cathode is stripped off. This demolding method in which the cathode cylinder can only be used once is time-consuming and labor-intensive, which makes the production cost high and is not conducive to industrial production. In the process of stripping the cathode mold, it is also easy to cause damage to the working mold belt finally obtained due to operational errors, thereby affecting the appearance and performance of the reflective film.

[0006] The invention patent with application publication number CN106702440A and titled "Electroforming equipment and method for preparing large seamless micro-prismatic templates" discloses a method for preparing a large seamless micro-prismatic working mold belt, which includes: preparing a flat mold, fixing L-shaped fixing strips on both sides of the flat mold along the width direction with epoxy resin, and enclosing the flat mold into a cylindrical mold through the L-shaped fixing strips, and using this cylindrical mold as a master mold for electroforming to copy the working mold belt. When taking the working mold belt, disassemble the L-shaped fixing strip on the master mold and open the master mold, so as to achieve the reuse of the master mold and prevent the working mold belt from being damaged. This method effectively improves the copying efficiency of the working mold belt and reduces the production cost of the working mold belt. However, simply fixing the enclosed cylindrical mold with an L-shaped fixing strip cannot effectively ensure that the enclosed joints are flush and consistent in height. The gaps at the joints on the working mold belt obtained will be uneven in width and height, which will affect the efficiency of reflective film production and the service life of the working mold belt, and further affect the appearance and performance of the reflective film, and increase the production cost of the reflective film. At the same time, due to the thickness of the flat mold, the rigidity of the cylindrical mother mold formed by bending is not high, and it is easy to twist and deform when the mother mold is opened, which affects the frequency of reuse of the mother mold, and further leads to a high production cost of the reflective film. Summary of the invention

[0007] The present invention aims to address the defects in the prior art of a device for manufacturing a working mold belt with a micro-corner-cone array structure, such as the gaps at the joints of a working mold belt obtained by the device for manufacturing a working mold belt with a micro-corner-cone array structure are of varying widths and unevenness, and the mother mold is easily twisted and deformed when opened, which affects the frequency of reuse of the mother mold. The present invention provides a new device for manufacturing a working mold belt with a micro-corner-cone array structure and a manufacturing method thereof.

[0008] In order to solve the above technical problems, the present invention is implemented by the following technical solutions:

[0009] A device for manufacturing a working mold belt of a micro-cone array structure comprises a cylinder and a mother mold, wherein the mother mold is arranged on the inner surface of the cylinder, and the mother mold is provided with a micro-cone array structure on a surface of the side facing away from the inner surface of the cylinder, the cylinder comprises a first arc-shaped support plate, a second arc-shaped support plate, a hinge, and a locking device, one end of the first arc-shaped support plate and one end of the second arc-shaped support plate are rotatably connected by the hinge, the other end of the first arc-shaped support plate and the other end of the second arc-shaped support plate are connected and locked by the locking device, a first opening and closing edge is arranged on the mother mold corresponding to the end of the first arc-shaped support plate provided with the locking device, and a second opening and closing edge is arranged on the mother mold corresponding to the end of the second arc-shaped support plate provided with the locking device, and the first opening and closing edge and the second opening and closing edge are tightly matched.

[0010] Through the cooperation of the first arc-shaped support plate, the second arc-shaped support plate, the hinge, and the locking device, the cylinder can be freely opened and locked as needed, and the mother mold is set on the inner surface of the cylinder. Through the support of the first arc-shaped support plate and the second arc-shaped support plate, the mother mold can be given sufficient rigidity, reducing the damage to the mother mold caused by deformation such as twisting and bending during demolding, which is conducive to demolding of the mother mold, thereby increasing the frequency of reuse of the mother mold. The first opening and closing edge and the second opening and closing edge are closely matched and correspond to the ends of the first arc-shaped support plate and the second arc-shaped support plate provided with the locking device, effectively improving and enhancing the quality level of the joint seam of the working mold belt obtained thereby.

[0011] Preferably, the above-mentioned device for manufacturing a working mold belt of a micro-pyramid array structure further comprises at least one conductive belt, and the conductive belt is vertically arranged on the outer surface of the cylinder.

[0012] The conductive tape is vertically arranged on the outer surface of the cylinder, rather than being in direct contact with the master mold. On the one hand, it can reduce the damage of the conductive tape to the master mold, and on the other hand, it can increase the current transmitted during copying, reduce the copying time, and improve the copying efficiency.

[0013] Preferably, in the above-mentioned device for manufacturing a working mold belt of a micro-pyramid array structure, the first arc-shaped support plate and the second arc-shaped support plate are stainless steel plates or nickel plates.

[0014] Stainless steel plates or nickel plates are not easy to react chemically with electroforming solutions, which can improve the service life of the first arc support plate, the second arc support plate and the electroforming solutions, and prevent the generation of impurities in the electroforming solutions from affecting the quality of the copied working mold tape.

[0015] Preferably, in the above-mentioned device for manufacturing a working mold belt of a micro-pyramid array structure, the thickness of the first arc-shaped support plate and the second arc-shaped support plate is 10-30 mm.

[0016] Within the above thickness range, the first arc-shaped support plate and the second arc-shaped support plate have sufficient rigidity and are not too heavy, so they are convenient to operate during use.

[0017] Preferably, in the above-mentioned device for manufacturing a working mold belt of a micro-pyramid array structure, a conductive adhesive is provided on the inner surface of the cylinder, and the master mold is bonded to the cylinder via the conductive adhesive.

[0018] The conductive adhesive allows the current to be transferred to the master mold through the cylinder and applied more evenly to the surface of the master mold, so that a larger current can be applied during electroforming, effectively shortening the copying time, improving the copying quality and copying efficiency.

[0019] Preferably, in the above-mentioned device for manufacturing a working mold belt of a micro-pyramid array structure, the first arc-shaped support plate includes at least two arc-shaped support units, and adjacent arc-shaped support units are hinged.

[0020] The arc-shaped support unit can further reduce the opening and closing angle of the first arc-shaped support plate during the opening and closing process, thereby reducing the extrusion of the master mold during the opening and closing process of the first arc-shaped support plate, preventing the master mold from deforming during the opening and closing process, and ensuring that the copied working mold has better roundness and flatness.

[0021] Preferably, in the above-mentioned device for manufacturing a working mold belt of a micro-cone array structure, the cylinder has a diameter of 500-1500 mm and a height of 600-1700 mm.

[0022] If the cylinder is too small, the copied working tape will also be relatively small, and the subsequent work efficiency of using the working tape to replicate the micro-corner pyramid array structure on the surface of the polymer plastic film will be significantly affected and restricted; if the cylinder is too large, the manufacturing cycle of the working tape will be long, and the risk of the working tape being twisted and deformed during transportation and turnover will increase, and the manufacturing cost and manufacturing risk of the production equipment carrying the working tape will increase. Limiting the diameter and height of the cylinder within the above range can take into account both production efficiency and cost, and is more conducive to the manufacturing of the working tape and the processing operations of the subsequent processes.

[0023] Preferably, in the above-mentioned device for manufacturing a working mold belt of a micro-pyramid array structure, the mother mold is a thin plate made of nickel material with a thickness of 0.2-2 mm.

[0024] The nickel thin plate can effectively prevent it from reacting with the electroforming solution, and the thickness of the thin plate is limited within the above range so that the thin plate has both certain rigidity and good flexibility, which can make the master mold fit more closely with the arc surface of the first arc support plate and the second arc support plate.

[0025] Preferably, in the above-described device for manufacturing a working mold belt of a micro-cone array structure, the mother mold includes at least two splicing units, the splicing units are arranged on the inner surface of the cylinder, and the edges of each splicing unit are flush with the edges of adjacent splicing units.

[0026] The mother mold has at least two splicing units, which can enable the mother mold to be better constructed when it is tightly fitted with the inner sides of the first arc-shaped support plate and the second arc-shaped support plate, thereby improving the convenience of construction; at the same time, it can better prevent the mother mold from being deformed when fitting, improve the fitting flatness, and also make the edges of the mother mold more flush with the edges of the first arc-shaped support plate and the second arc-shaped support plate when fitting.

[0027] Preferably, a method for manufacturing a device for manufacturing a working mode belt of a micro-pyramid array structure comprises the following steps:

[0028] a. Cut the stainless steel plate or nickel plate and bend it into a cylinder through a plate rolling machine;

[0029] b. The cylinder bent in step a is cut into equal parts in height direction into a first arc-shaped support plate and a second arc-shaped support plate;

[0030] c. A hinge is provided at one end of the first arc-shaped support plate and one end of the second arc-shaped support plate, and one end of the first arc-shaped support plate and one end of the second arc-shaped support plate are rotatably connected by the hinge;

[0031] d. A locking device is provided at the other end of the first arc-shaped support plate and the other end of the second arc-shaped support plate;

[0032] e. Take a master mold with the same size as the cylinder and a micro-corner pyramid array structure on the surface, and divide the first opening and closing edge and the second opening and closing edge on the master mold;

[0033] f. Apply conductive adhesive on the inner side of the first arc-shaped support plate and the second arc-shaped support plate, and attach the side of the mother mold where the micro-corner cone array structure is not provided to the conductive adhesive, align the first opening and closing edge of the mother mold with the end of the first arc-shaped support plate provided with a locking device, align the second opening and closing edge of the mother mold with the end of the second arc-shaped support plate provided with a locking device, and use the locking device to surround and connect the other end of the first arc-shaped support plate and the other end of the second arc-shaped support plate and lock them to obtain a device for manufacturing a working mold belt of a micro-corner cone array structure.

[0034] The device for manufacturing a working mold belt with a micro-corner cone array structure manufactured by the above method can greatly increase the frequency of reuse of the master mold, while effectively improving the quality level of the joint seams of the working mold belt, eliminating the unevenness and uneven width of the joint seams, thereby improving the production efficiency of the reflective film, reducing the attenuation rate of the retroreflective performance of the reflective film, and thereby reducing the comprehensive production cost of the reflective film.

[0035] Preferably, in the manufacturing method of the device for manufacturing a working mold belt with a micro-cone array structure as described above, in the step e, the mother mold with a micro-cone array structure on the surface is cut into individual splicing units with the same size and size as the first arc support plate and the second arc support plate, and in the step f, the side of the splicing unit where the micro-cone array structure is not provided is attached to the conductive adhesive flush with the cut end surfaces of the first arc support plate and the second arc support plate, so that each splicing unit is firmly bonded to the inner side of the first arc support plate and the second arc support plate, respectively.

[0036] Through the above steps, the mother mold can be fitted more smoothly with the first arc support plate and the second arc support plate, and the mother mold can be better aligned with the first arc support plate and the second arc support plate during edge construction. The conductive adhesive can conduct the current on the cylinder to the mother mold more quickly and evenly, improving the efficiency of electroforming.

[0037] Preferably, in the above-mentioned method for manufacturing a device for manufacturing a working mold belt of a micro-cone array structure, in the step b, the first arc-shaped support plate is further cut into at least two arc-shaped support units, and each arc-shaped support unit is hinged to each other.

[0038] The arc-shaped support unit obtained through the above steps can further reduce the opening and closing angle of the first arc-shaped support plate during the opening and closing process, thereby reducing the extrusion of the mother mold and the working mold belt during the opening and closing process of the first arc-shaped support plate, preventing the mother mold from deforming during the opening and closing process, and ensuring that the obtained working mold belt has good roundness and flatness.

[0039] Preferably, in the above-described method for manufacturing a device for manufacturing a working mold belt of a micro-cone array structure, the cylinder obtained in step a is further rounded by a rounding device, and the true roundness of the cylinder after the rounding treatment is 0.01-0.1 mm.

[0040] Through the above steps, the roundness of the copied working tape can be improved, and the deformation of the micro-corner array structure on the surface of the working tape can be effectively reduced, thereby ensuring that the retroreflective performance of the micro-prismatic reflective material produced by the working tape will not be attenuated.

[0041] Preferably, in the above-described method for manufacturing a device for manufacturing a working mold belt of a micro-cone array structure, the inner side of the cylinder obtained in step a is further polished, and the surface roughness of the cylinder after polishing is level 6-14.

[0042] Through the above steps, the master mold can be more closely attached to the inner sides of the first arc-shaped support plate and the second arc-shaped support plate, thereby preventing the master mold from being partially separated or deformed during the copying process, thereby preventing the quality of the obtained working mold belt from being affected.

[0043] Preferably, in the above-mentioned method for manufacturing a device for manufacturing a working mold belt of a micro-cone array structure, in step b, chamfers are further provided at the cutting end faces of the first arc-shaped support plate and the second arc-shaped support plate.

[0044] The chamfer setting can reduce the joint seam of the first arc support plate and the second arc support plate as much as possible, while improving the sealing of the first arc support plate and the second arc support plate in the closed state, thereby improving the joint quality of the obtained working mold belt.

[0045] Preferably, in the above-mentioned manufacturing method of the device for manufacturing the working mold belt of the micro-cone array structure, in the step b, the cutting end faces of the first arc-shaped support plate and the second arc-shaped support plate are subjected to precision trimming treatment, and the roughness of the cutting end faces after precision trimming treatment is level 6-14, and the straightness is 0.001-0.01mm.

[0046] Through the above steps, the seams between the edges of the first arc-shaped support plate and the second arc-shaped support plate can be more closely fitted, the closeness of the seams can be improved, and the height difference of the seams can be reduced, thereby effectively improving the flatness of the seams of the working mold belt, eliminating burrs, and further improving the production efficiency in subsequent production. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a structural schematic diagram of the present invention;

[0048] Figure 2 It is a schematic diagram of the structure of the present invention in an open state;

[0049] Figure 3 for Figure 2 A partial enlarged view of the middle A part;

[0050] Figure 4 It is a structural schematic diagram of the present invention in a locked state;

[0051] Figure 5 for Figure 4 A partial enlarged view of the middle B part;

[0052] Figure 6 The structure of the present invention in the demoulding state is schematically shown Figure 1 ;

[0053] Figure 7 for Figure 6 A partial enlarged view of the middle C part;

[0054] Figure 8 The structure of the present invention in the demoulding state is schematically shown Figure 2 . DETAILED DESCRIPTION

[0055] The following is combined with Figure 1-8 The present invention is further described in detail with specific embodiments, but they are not intended to limit the present invention:

[0056] Example 1

[0057] like Figures 1 to 8 As shown, a device for manufacturing a working mold belt of a micro-cone array structure includes a cylinder 1 and a mother mold 2. The mother mold 2 is arranged on the inner surface of the cylinder 1. The mother mold 2 is provided with a micro-cone array structure 24 on the side surface facing away from the inner surface of the cylinder 1. The cylinder 1 includes a first arc-shaped support plate 11, a second arc-shaped support plate 12, a hinge 4, and a locking device 5. One end of the first arc-shaped support plate 11 and one end of the second arc-shaped support plate 12 are rotatably connected through the hinge 4, and the other end of the first arc-shaped support plate 11 and the other end of the second arc-shaped support plate 12 are connected and locked through the locking device 5. A first opening and closing edge 22 is provided on the mother mold 2 corresponding to the end of the first arc-shaped support plate 11 provided with the locking device 5, and a second opening and closing edge 23 is provided on the mother mold 2 corresponding to the end of the second arc-shaped support plate 12 provided with the locking device 5, and the first opening and closing edge 22 and the second opening and closing edge 23 are tightly matched.

[0058] When in use, the cylinder 1 is hoisted into the electroforming tank, a titanium basket and an anode bag are set in the center of the cylinder 1, and nickel beads or nickel cakes are placed in the anode belt. At the same time, the electroforming tank is filled with electroforming solution to ensure that the electroforming solution completely submerges the cylinder 1; the cathode of the power supply is connected to the mother mold 2, and the anode of the power supply is connected to the titanium basket. After the power is turned on, the nickel ions will gradually and densely deposit on the surface of the mother mold 2 under the action of the current. Since the surface of the mother mold 2 is provided with a micro-cone array structure 24, as time goes by, a working mold belt 6 with a structure opposite to the micro-cone array structure 24 on the mother mold 2 and the same size will be deposited on the surface of the mother mold 2.

[0059] After the electroforming process is completed, the power supply is disconnected, the cylinder 1 is hoisted out of the electroforming tank, and cleaned. The operator first unlocks the other end of the first arc support plate 11 and the other end of the second arc support plate 12 through the locking device 5, and then rotates the first arc support plate 11 and the second arc support plate 12 outward with the hinge 4 as the center, thereby driving the mother mold 2 on the inner surface of the first arc support plate 11 and the second arc support plate 12 to rotate outward, so that the mother mold 2 is separated from the obtained working mold belt 6, and the operator can completely remove the working mold belt 6 from the cylinder 1 without destroying the entire cylinder 1 and the mother mold 2, thereby increasing the frequency of reuse of the mother mold 2, and the quality level of the splicing of the obtained working mold belt 6 is high, which can meet the processing requirements of the subsequent process.

[0060] Among them, the locking device 5 can adopt a pin hole with a bolt connection structure, which is more convenient when locking and unlocking, and the locking device 5 can be evenly arranged from top to bottom along the cylinder 1, further improving the tightness and uniformity of the force of the other end of the first arc-shaped support plate 11 and the other end of the second arc-shaped support plate 12 after locking, thereby improving the tightness of the splicing of the first opening and closing edge 22 and the second opening and closing edge 23, thereby improving the quality of the splicing seam of the working mold belt 6

[0061] Preferably, at least one conductive belt 3 is further included, and the conductive belt 3 is vertically arranged on the outer surface of the cylinder 1.

[0062] Preferably, the first arc-shaped support plate 11 and the second arc-shaped support plate 12 are stainless steel plates or nickel plates.

[0063] Preferably, the thickness of the first arc-shaped support plate 11 and the second arc-shaped support plate 12 is 10 mm.

[0064] Preferably, the inner surface of the cylinder 1 is provided with a conductive adhesive, and the master mold 2 is bonded to the cylinder 1 via the conductive adhesive.

[0065] Preferably, the first arc-shaped support plate 11 includes at least two arc-shaped support units 111 , and adjacent arc-shaped support units 111 are hinged.

[0066] Preferably, the cylinder 1 has a diameter of 500 mm and a height of 600 mm.

[0067] Preferably, the master mold 2 is a thin plate made of nickel with a thickness of 0.2 mm.

[0068] Preferably, the master mold 2 includes at least two splicing units 21 , and the splicing units 21 are arranged on the inner surface of the cylinder 1 , and the edge of each splicing unit 21 is flush with the edge of the adjacent splicing unit 21 .

[0069] Preferably, a method for manufacturing a device for manufacturing a working mode belt of a micro-pyramid array structure comprises the following steps:

[0070] a. Cut a stainless steel plate or a nickel plate and bend it into a cylinder 1 through a plate rolling machine;

[0071] b. The cylinder 1 bent in step a is cut into equal parts in height direction into a first arc-shaped support plate 11 and a second arc-shaped support plate 12;

[0072] c. A hinge 4 is provided at one end of the first arc-shaped support plate 11 and one end of the second arc-shaped support plate 12, and one end of the first arc-shaped support plate 11 and one end of the second arc-shaped support plate 12 are rotatably connected through the hinge 4;

[0073] d. A locking device 5 is provided at the other end of the first arc-shaped support plate 11 and the other end of the second arc-shaped support plate 12;

[0074] e. Take a master mold 2 having the same size as the cylinder 1 and having a micro-pyramid array structure 24 on the surface, and divide the first opening and closing edge 22 and the second opening and closing edge 23 on the master mold 2;

[0075] f. Apply conductive adhesive on the inner side of the first arc-shaped support plate 11 and the second arc-shaped support plate 12, and attach the side of the mother mold 2 where the micro-corner pyramid array structure 24 is not provided to the conductive adhesive, align the first opening and closing edge 22 of the mother mold 2 with the end of the first arc-shaped support plate 11 provided with the locking device 5, align the second opening and closing edge 23 of the mother mold 2 with the end of the second arc-shaped support plate 12 provided with the locking device 5, and connect and lock the other end of the first arc-shaped support plate 11 and the other end of the second arc-shaped support plate 12 by the locking device 5 to obtain a device for manufacturing a working mold belt of a micro-corner pyramid array structure.

[0076] Preferably, in the step e, the mother mold 2 having a micro-cone array structure 24 on its surface is cut into individual splicing units 21 having the same size and dimensions as the first arc support plate 11 and the second arc support plate 12; and in the step f, the side of the splicing unit 21 on which the micro-cone array structure 24 is not provided is attached to the conductive adhesive flush with the cut end surfaces of the first arc support plate 11 and the second arc support plate 12, so that each splicing unit 21 is firmly bonded to the inner side of the first arc support plate 11 and the second arc support plate 12, respectively.

[0077] Preferably, in the step b, the first arc-shaped support plate 11 is further cut into at least two arc-shaped support units 111, and the arc-shaped support units 111 are hinged to each other.

[0078] Preferably, the cylinder 1 obtained in step a is further rounded by a rounding device, and the true roundness of the cylinder 1 after the rounding treatment is 0.01 mm.

[0079] Preferably, the inner side of the cylinder 1 obtained in step a is further polished, and the surface roughness of the cylinder 1 after polishing is level 6.

[0080] Preferably, in the step b, chamfers are provided at the cut end surfaces of the first arc-shaped support plate 11 and the second arc-shaped support plate 12 .

[0081] Preferably, in the step b, the cut end surfaces of the first arc-shaped support plate 11 and the second arc-shaped support plate 12 are subjected to precision trimming treatment, and the roughness of the cut end surfaces after precision trimming treatment is level 6, and the straightness is 0.001 mm.

[0082] More specifically, when electroforming is required, the cylinder 1 is hoisted into the electroforming tank, and the electroforming solution is filled into the electroforming tank to ensure that the electroforming solution completely submerges the cylinder 1; the cathode of the power supply is connected to the conductive belt 3, and the anode of the power supply is connected to the titanium basket. After the power is turned on, the current first flows through the conductive belt 3, then flows through the cylinder 1, and is finally evenly conducted to the mother mold 2 through the conductive adhesive, thereby making the working mold belt 6 obtained by electroforming more uniform and improving the electroforming efficiency.

[0083] After the electroforming process is completed, the power supply is disconnected, the cylinder 1 is lifted out of the electroforming tank, and cleaned. At this time, the other end of the first arc-shaped support plate 11 and the other end of the second arc-shaped support plate 12 are unlocked by the locking device 5, and then the arc-shaped support unit 111 on the first arc-shaped support plate 11 close to the locking device 5 is rotated outward, so that the mother mold 2 on this arc-shaped support unit 111 is first separated from the working mold belt 6, and then the other arc-shaped support units 111 of the first arc-shaped support plate 11 are opened in turn, so that the mother mold 2 on the corresponding arc-shaped support unit 111 is separated from the working mold belt 6. Through such a structure, the extrusion of the mother mold 2 and the working mold belt 6 during the opening and closing process of the first arc-shaped support plate 11 can be reduced, and the mother mold 2 can be prevented from deforming during the opening and closing process, thereby ensuring that the obtained working mold belt 6 has good roundness and flatness.

[0084] Example 2

[0085] The thickness of the first arc-shaped support plate 11 and the second arc-shaped support plate 12 is 30 mm.

[0086] The cylinder 1 has a diameter of 1500 mm and a height of 1700 mm.

[0087] The master mold 2 is a thin plate made of nickel with a thickness of 2 mm.

[0088] The cylinder 1 obtained in step a is further rounded by a rounding device, and the true roundness of the cylinder 1 after the rounding is 0.1 mm.

[0089] The inner side of the cylinder 1 obtained in step a is also polished, and the surface roughness of the cylinder 1 after polishing is level 14.

[0090] In the step b, the cut end surfaces of the first arc-shaped support plate 11 and the second arc-shaped support plate 12 are subjected to precision trimming treatment, and the roughness of the cut end surfaces after the precision trimming treatment is level 14, and the straightness is 0.01 mm.

[0091] Other implementations are the same as in Example 1.

[0092] Example 3

[0093] The thickness of the first arc-shaped support plate 11 and the second arc-shaped support plate 12 is 20 mm.

[0094] The cylinder 1 has a diameter of 1000 mm and a height of 1150 mm.

[0095] The master mold 2 is a thin plate made of nickel with a thickness of 1.1 mm.

[0096] The cylinder 1 obtained in step a is further rounded by a rounding device, and the true roundness of the cylinder 1 after the rounding is 0.05 mm.

[0097] The inner side of the cylinder 1 obtained in step a is also polished, and the surface roughness of the cylinder 1 after polishing is level 10.

[0098] In the step b, the cut end surfaces of the first arc-shaped support plate 11 and the second arc-shaped support plate 12 are subjected to precision trimming treatment, and the roughness of the cut end surfaces after precision trimming treatment is level 10, and the straightness is 0.005 mm.

[0099] Other implementations are the same as in Example 1.

[0100] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A device for manufacturing a working mold belt of a micro-pyramid array structure, comprising a cylinder (1) and a master mold (2), wherein the master mold (2) is arranged on the inner surface of the cylinder (1), and a micro-pyramid array structure (24) is arranged on a side surface of the master mold (2) facing away from the inner surface of the cylinder (1), characterized in that: The cylinder (1) comprises a first arc-shaped support plate (11), a second arc-shaped support plate (12), a hinge (4), and a locking device (5); one end of the first arc-shaped support plate (11) and one end of the second arc-shaped support plate (12) are rotatably connected via the hinge (4); the other end of the first arc-shaped support plate (11) and the other end of the second arc-shaped support plate (12) are connected and locked via the locking device (5); a first opening and closing edge (22) is provided on the master mold (2) corresponding to the end of the first arc-shaped support plate (11) provided with the locking device (5); a second opening and closing edge (23) is provided on the master mold (2) corresponding to the end of the second arc-shaped support plate (12) provided with the locking device (5); the first opening and closing edge (22) and the second opening and closing edge (23) are tightly matched; It also comprises at least one conductive belt (3), wherein the conductive belt (3) is vertically arranged on the outer surface of the cylinder (1); The thickness of the first arc-shaped support plate (11) and the second arc-shaped support plate (12) is 10-30 mm; The manufacturing method comprises the following steps: a. Cut a stainless steel plate or a nickel plate and bend it into a cylinder (1) by a plate rolling machine; b. cutting the cylinder (1) bent in step a into equal parts in the height direction into a first arc-shaped support plate (11) and a second arc-shaped support plate (12); c. A hinge (4) is provided at one end of the first arc-shaped support plate (11) and one end of the second arc-shaped support plate (12), and one end of the first arc-shaped support plate (11) and one end of the second arc-shaped support plate (12) are rotatably connected through the hinge (4); d. A locking device (5) is provided at the other end of the first arc-shaped support plate (11) and the other end of the second arc-shaped support plate (12); e. taking a master mold (2) having the same size and dimension as the cylinder (1) and having a micro-cone array structure (24) disposed on the surface, and dividing a first opening and closing edge (22) and a second opening and closing edge (23) on the master mold (2); f. Applying conductive adhesive to the inner sides of the first curved support plate (11) and the second curved support plate (12), and attaching the side of the master mold (2) on which the micro-cone array structure (24) is not provided to the conductive adhesive, aligning the first opening and closing edge (22) of the master mold (2) with the end of the first curved support plate (11) provided with the locking device (5), aligning the second opening and closing edge (23) of the master mold (2) with the end of the second curved support plate (12) provided with the locking device (5), and enclosing and connecting the other end of the first curved support plate (11) and the other end of the second curved support plate (12) by means of the locking device (5) and locking them, thereby obtaining a device for manufacturing a working mold belt of a micro-cone array structure; The cylinder (1) obtained in step a is further subjected to rounding treatment by a rounding device, and the true roundness of the cylinder (1) after the rounding treatment is 0.01-0.1 mm.

2. The device for manufacturing a micro-pyramid array structure working mold belt according to claim 1, characterized in that: The first arc-shaped support plate (11) and the second arc-shaped support plate (12) are stainless steel plates or nickel plates.

3. The device for manufacturing a micro-pyramid array structure working mold belt according to claim 1, characterized in that: The inner surface of the cylinder (1) is provided with a conductive adhesive, and the master mold (2) is bonded to the cylinder (1) via the conductive adhesive.

4. The device for manufacturing a micro-pyramid array structure working mold belt according to claim 1, characterized in that: The first arc-shaped support plate (11) comprises at least two arc-shaped support units (111), and adjacent arc-shaped support units (111) are hingedly connected.

5. The device for manufacturing a working mold belt of a micro-pyramid array structure according to claim 1, characterized in that: The cylinder (1) has a diameter of 500-1500 mm and a height of 600-1700 mm.

6. The device for manufacturing a micro-pyramid array structure working mold belt according to claim 5, characterized in that: The master mold (2) is a thin plate made of nickel with a thickness of 0.2-2 mm.

7. The device for manufacturing a working mold belt of a micro-pyramid array structure according to claim 1, characterized in that: The master mold (2) comprises at least two splicing units (21), wherein the splicing units (21) are arranged on the inner surface of the cylinder (1), and the edge of each splicing unit (21) is flush with the edge of an adjacent splicing unit (21).

8. The device for manufacturing a working mold belt of a micro-pyramid array structure according to claim 1, characterized in that: In the step e, the mother mold (2) having the micro-cone array structure (24) on its surface is cut into individual splicing units (21) having the same size and dimensions as the first arc-shaped support plate (11) and the second arc-shaped support plate (12); in the step f, the side of the splicing unit (21) on which the micro-cone array structure (24) is not provided is attached to the conductive adhesive flush with the cut end surfaces of the first arc-shaped support plate (11) and the second arc-shaped support plate (12), so that each splicing unit (21) is firmly bonded to the inner side of the first arc-shaped support plate (11) and the second arc-shaped support plate (12), respectively.

9. The device for manufacturing a micro-pyramid array structure working mold belt according to claim 1, characterized in that: In the step b, the first arc-shaped support plate (11) is further cut into at least two arc-shaped support units (111), and each arc-shaped support unit (111) is hinged to each other.

10. The device for manufacturing a working mold belt of a micro-pyramid array structure according to claim 1, characterized in that: The inner side of the cylinder (1) obtained in step a is also polished, and the surface roughness of the cylinder (1) after polishing is 6-14.

11. The device for manufacturing a working mold belt of a micro-pyramid array structure according to claim 1, characterized in that: In the step b, chamfers are also provided at the cut end surfaces of the first arc-shaped support plate (11) and the second arc-shaped support plate (12).

12. The device for manufacturing a working mold belt of a micro-pyramid array structure according to claim 1, characterized in that: In the step b, the cut end surfaces of the first arc-shaped support plate (11) and the second arc-shaped support plate (12) are subjected to precision trimming treatment, and the roughness of the cut end surfaces after the precision trimming treatment is 6-14 levels, and the straightness is 0.001-0.01 mm.

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