A method for preparing a colorful reflective film by vacuum evaporation

Abstract

The present invention relates to the technical field of film-making equipment, and specifically to a method for preparing a colorful reflective film by vacuum evaporation, wherein the film material is loaded onto a film material conveying mechanism in a vacuum coating chamber, a forced refrigeration system is started, and an air path is connected; the cabin door is closed, and a vacuum is drawn to the vacuum coating chamber; the power supply of the evaporation tank is connected, and the evaporation tank heats the evaporation target material to the melting point and vaporizes it; the film material conveying mechanism is opened, and a normal evaporation state is entered, and a step-by-step evaporation operation is performed; after the evaporation is completed, the film material conveying mechanism is closed, and then the power supply of the evaporation tank is closed, and finally the vacuum extraction equipment is closed, the temperature is restored, the atmospheric pressure is balanced, and the cabin is opened. The method for preparing a colorful reflective film by vacuum evaporation provided by the present invention uses an input wheel and an output wheel to be arranged on the same side of a main drum so that the output wheel or the peripheral wheel does not contact the coating surface of the film material, and the output wheel is prevented from contacting the coating surface of the film material and causing damage to the coating surface of the film material, thereby improving the coating forming quality on the film material.

Description

Technical Field

[0001] The invention relates to the technical field of film making equipment, and in particular to a method for preparing a colorful reflective film by vacuum evaporation. Background Art

[0002] The iridescent reflective film is usually prepared by vacuum evaporation, that is, a layer of metal film is evaporated onto the film material in a vacuum chamber to form the iridescent reflective film.

[0003] According to the publication number CN109468591B, the announcement date is 2020.11.13, and a method for preparing a colorful reflective film by a vacuum evaporation process is disclosed. The base film of the plant to be plated is loaded into the evaporation chamber, and then the main drum is cooled at a low temperature, a molybdenum boat arranged with evaporation targets is placed in the evaporation tank, and the distance from each part of the evaporation target to the bottom of the central main drum is ensured to be different. The evaporation tank is closed and sent into the evaporation chamber, and the evaporation chamber is vacuumed; the evaporation target is heated to the melting point and vaporized, the evaporation tank cover is opened, and the base film of the plant to be plated is controlled to move at a uniform speed in the evaporation chamber, and the evaporation operation is performed step by step; after the evaporation is completed, the equipment is turned off. The reflective colorful film finally obtained by the method provided by the present invention is not only transparent on the surface, suitable for later deep processing, but also the metal film is firm and not easy to fall off, and in a dim environment, it will produce a colorful effect when exposed to light.

[0004] In the prior art including the above-mentioned patent, an evaporation tank is used to heat and evaporate the metal evaporation target material, and the main drum is located above the evaporation tank to transport the film material, so that the metal vapor is plated on the film material to form the desired coating. Since the input wheel is symmetrically arranged about the main drum to transport the film material, when the film material passes through the main drum and is coated with metal vapor, as the input wheel and the main drum are transported, the coated surface of the film material will contact the input wheel, which will cause the coated surface of the film material to be squeezed by the input wheel and cause the coating surface to be damaged. Summary of the invention

[0005] The purpose of the present invention is to provide a method for preparing a colorful reflective film by vacuum evaporation to solve the above problems.

[0006] In order to achieve the above object, the present invention provides the following technical solution: a method for preparing a colorful reflective film by vacuum evaporation, comprising the following steps:

[0007] S1, the film material is loaded onto the film material conveying mechanism in the vacuum coating chamber, the film material first passes through the input wheel and the main drum, and then passes through part of the peripheral wheels of the tensioning seat and the output wheel in sequence to be output to the winding roller, the forced refrigeration system is started, and the air path is connected;

[0008] S2. Close the door of the vacuum coating chamber to ensure that the vacuum coating chamber is in a closed state, and then start the vacuum extraction equipment to extract the vacuum in the vacuum coating chamber;

[0009] S3, turning on the power of the evaporation tank, the evaporation tank heats the evaporation target material to the melting point and vaporizes it;

[0010] S4, start the film material conveying mechanism, the target material vapor generated on the evaporation tank rises on the film material at the main drum position to form a coating, the input wheel and the main drum rotate to control the coating surface of the film material to move over the evaporation tank, the output wheel rotates to control the film material to be wound on the winding roller with the coating surface facing away from the output wheel and the peripheral wheels, and the tensioning seat is located on the base and rotates to make the peripheral wheels rotate circumferentially, and during the circumferential rotation of the peripheral wheels, the non-coated surface of the film material passing through the main drum is cyclically contacted and tensioned and then released, thereby entering a normal evaporation state and performing a step-by-step evaporation operation;

[0011] S5. After the evaporation is completed, turn off the film material conveying mechanism, then turn off the power of the evaporation tank, and finally turn off the vacuum extraction equipment, return to temperature, balance the atmospheric pressure, and open the cabin.

[0012] Preferably, the tensioning seat is provided with a collecting chamber, and a flow-driving assembly is arranged in a circumferential array in the collecting chamber. The flow-driving assembly includes a flow-driving plate and a driving seat. The driving seat is slidably arranged, and the flow-driving plate is movably assembled to have the following two stations:

[0013] Extending station: the flow-displacing plate is parallel to the driving seat to be close to the inner wall of the collecting chamber;

[0014] Flow-displacing station: the flow-displacing plate is perpendicular to the driving seat to extend into the collecting chamber;

[0015] Among them, the driving seat is driven to slide back and forth so that the flow-driving plate keeps the extended position and moves to the opening of the collecting chamber, and then the driving seat drives the flow-driving plate to switch from the extended position to the flow-driving position and keeps the flow-driving plate in the flow-driving position and moves to the inside of the collecting chamber and then switches to the extended position.

[0016] Preferably, the collecting chamber is in a truncated cone shape, and the expanded end of the collecting chamber is an opening portion, and a storage chamber is also provided in the tensioning seat, and the storage chamber is connected with the storage chamber through the narrow opening portion of the collecting chamber.

[0017] Preferably, a sealing assembly is coaxially arranged on the base with respect to the tensioning seat, which includes a movable seat and a telescopic rod rotatably arranged on the movable seat, the telescopic rod penetrates and extends into the storage cavity, and the tensioning seat is driven to rotate so that the movable seat drives the telescopic rod to move axially into the narrow mouth portion to cause piston movement to intermittently seal the narrow mouth portion.

[0018] Preferably, it also includes a speed-up component arranged in the tensioning seat, which includes a sliding vane slidably arranged on the inner wall of the collecting chamber, and a resisting scraper is arranged at the first end of the sliding vane. The driving seat is driven to slide closer to the narrow mouth so that the resisting scraper moves to push the flow-driving plate to accelerate the rotation and switch from the flow-driving position to the extension position.

[0019] Preferably, the speed-up assembly also includes a sliding seat, a transmission gear member and a second elastic member. The sliding seat is slidably arranged and is pushed against by the sliding of the driven seat. The sliding seat is coupled to the transmission gear member. The transmission gear ring of the transmission gear member is coupled to the sliding plate. A scratch hook is provided on the second end of the sliding plate. The second elastic member enables the sliding seat to slide close to the driving seat to drive the sliding plate away from the flow-displacing plate through the transmission gear member, and the scratch hook extends into the narrow mouth.

[0020] Preferably, two groups of elastic sheets are symmetrically arranged on the driving seat, a locking portion is arranged on the elastic sheets, a movable shaft portion is arranged on the flow-driving plate, a partial gear portion arranged on the movable shaft portion is coupled with a rack portion arranged on the driving seat, and the elastic sheets are located in a default state so that the locking portion is engaged in the locking groove on the movable shaft portion. When the driving seat drives the flow-driving plate to move to the end of the sliding stroke of the flow-driving plate, the elastic sheets are disengaged from the movable shaft portion and the driving seat slides to rotate the flow-driving plate and engage and lock the other group of elastic sheets with the movable shaft portion.

[0021] Preferably, the flow-displacing plate is movably arranged in a sliding groove opened in the collecting chamber, and an ejection groove is opened in the sliding groove, the other end of the ejection groove is connected to the outside of the tensioning seat and faces between the two peripheral wheels, and the driving seat is located on the side close to the narrow mouth part in the sliding stroke so that the rack part and part of the gear part are located in the ejection groove.

[0022] Preferably, a rotating wheel and a transmission rod are provided in the tensioning seat, a rod portion is provided on the rotating wheel, an end of the rod portion is rotatably connected to the transmission rod, and the other end of the transmission rod is rotatably connected to the driving seat, and the rotating wheel is driven to rotate to drive the driving seat to slide reciprocatingly through the rod portion and the transmission rod.

[0023] Preferably, a worm wheel and a worm member are rotatably arranged in the tensioning seat, the worm member is coupled to the ring tooth portion on the base through the second coupling teeth, the worm member is coupled to the worm wheel member, and the worm wheel member is rotatably coupled to the rotating wheel through the first coupling teeth.

[0024] In the above technical scheme, the present invention provides a method for preparing a fantasy reflective film by vacuum evaporation, which has the following beneficial effects: the input wheel and the output wheel are both arranged on the same side of the main drum to ensure that the output wheel or the peripheral wheel does not contact the coating surface of the film material, thereby avoiding the output wheel contacting the coating surface of the film material and causing damage to the coating surface of the film material, thereby improving the coating forming quality on the film material; secondly, the tensioning seat and the peripheral wheel can be used to tension the film material while shaking the film material, and the bubbles generated on the coating surface during the coating of the film material can be shaken to eliminate them, thereby further improving the forming quality of the coating surface of the film material. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1 A schematic structural diagram of a film material conveying mechanism provided by an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the working principle of the film material conveying mechanism provided in an embodiment of the present invention;

[0028] Figure 3 A schematic diagram of the structure of a base provided in an embodiment of the present invention;

[0029] Figure 4 A schematic cross-sectional view of the structure of a tensioning assembly and a base provided in an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of the structure of the tensioning seat and the peripheral side wheel provided in an embodiment of the present invention;

[0031] Figure 6 A schematic diagram of the structure of the tensioning seat and the peripheral side wheel provided in an embodiment of the present invention;

[0032] Figure 7 A schematic diagram of the structures of a flow-displacing assembly, a transmission assembly and a speed-increasing assembly provided in an embodiment of the present invention;

[0033] Figure 8 A schematic diagram of the exploded structure of a flow displacement assembly provided in an embodiment of the present invention;

[0034] Fig. 9 A schematic diagram of the structure of a telescopic rod and a movable seat provided in an embodiment of the present invention;

[0035] Fig.10 A schematic diagram of the exploded structure of a speed-up assembly provided in an embodiment of the present invention;

[0036] Fig.11 A schematic diagram of the working state of a flow-displacing plate of a flow-displacing assembly provided in an embodiment of the present invention located at a flow-displacing station;

[0037] Fig.12 The embodiment of the present invention provides Figure 4 A local enlarged schematic diagram of the middle A;

[0038] Fig.13 The embodiment of the present invention provides Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0039] Fig.14The embodiment of the present invention provides Fig.11 A partial enlarged schematic diagram of point C in the middle.

[0040] Description of reference numerals:

[0041] 1. Base; 11. Ring gear; 21. Input wheel; 22. Main drum; 23. Output wheel; 3. Tensioning assembly; 31. Tensioning seat; 311. Collecting chamber; 3111. Narrow mouth; 3112. Sliding groove; 312. Storage chamber; 313. Fitting groove; 314. Ejection groove; 32. Side wheel; 4. Flow-displacing assembly; 41. Flow-displacing plate; 411. Movable shaft; 412. Partial gear; 413. Locking groove; 42. Driving seat; 421. Rack; 422. Sliding portion; 43. Elastic sheet; 431, locking part; 51, telescopic rod; 52, movable seat; 521, axial movable part; 522, engaging tooth; 53, first elastic member; 61, rotating wheel; 611, rod; 62, transmission rod; 63, worm gear member; 631, first coupling tooth; 64, worm member; 641, second coupling tooth; 7, speed-up assembly; 71, sliding plate; 72, sliding seat; 711, contact scraper; 712, scratch hook; 73, second elastic member; 74, transmission gear member; 741, transmission gear ring; 91, contact member. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0043] like Figure 1-14 As shown, a method for preparing a colorful reflective film by vacuum evaporation comprises the following steps:

[0044] S1, the film material is loaded onto the film material conveying mechanism in the vacuum coating chamber, the film material first passes through the input wheel 21 and the main drum 22, and then passes through the partial peripheral wheel 32 of the tensioning seat 31 and the output wheel 23 in sequence to be output to the winding roller, the forced refrigeration system is started, and the air path is connected;

[0045] S2. Close the door of the vacuum coating chamber to ensure that the vacuum coating chamber is in a closed state, and then start the vacuum extraction equipment to extract the vacuum in the vacuum coating chamber;

[0046] S3, turning on the power of the evaporation tank, the evaporation tank heats the evaporation target material to the melting point and vaporizes it;

[0047] S4, the film material conveying mechanism is turned on, and the target material vapor generated on the evaporation tank rises to form a coating on the film material located at the main drum 22. The input wheel 21 and the main drum 22 rotate to control the coating surface of the film material to move over the evaporation tank, and the output wheel 23 rotates to control the film material to be wound on the winding roller with the coating surface facing away from the output wheel 23 and the peripheral wheels 32. The tensioning seat 31 is located on the base 1 and rotates to make the peripheral wheels 32 rotate circumferentially. During the circumferential rotation of the peripheral wheels 32, the non-coated surface of the film material passing through the main drum 22 is cyclically contacted and tensioned and then disengaged, thereby entering a normal evaporation state and performing a step-by-step evaporation operation.

[0048] S5. After the evaporation is completed, turn off the film material conveying mechanism, then turn off the power of the evaporation tank, and finally turn off the vacuum extraction equipment, return to temperature, balance the atmospheric pressure, and open the cabin.

[0049] Specifically, the film material conveying mechanism and the evaporation tank are both arranged in the vacuum coating chamber, and the evaporation tank is arranged on the lower side of the main drum 22 so that the target material vapor generated on the evaporation tank can be coated on the coating surface of the film material when it rises. Secondly, the input wheel 21 and the output wheel 23 are both arranged on the same side of the main drum 22. Figure 2 As shown, the film material has an input wheel 21 located on the right side of the main drum 22 for input. After passing through the main drum 22, the film material is tensioned by the peripheral wheel 32 and is output from the right side of the main drum 22 by the output wheel 23. As a result, when the film material moves for vapor deposition, the main drum 22, the peripheral wheel 32 and the output wheel 23 do not contact the coating surface of the film material, thereby avoiding the problem of damage to the coating surface of the film material caused by the contact between the output wheel 23 or the peripheral wheel 32 and the coating surface of the film material after the coating of the film material is completed, thereby improving the coating forming quality on the film material.

[0050] Secondly, since the tensioning seat 31 is rotatably arranged on the base 1 of the film material conveying mechanism, and the peripheral side wheels 32 are arranged in a circular array on the tensioning seat 31, when the film material conveying mechanism is started and the peripheral side wheels 32 pass through the main drum 22 to tension the film material that has been coated, the tensioning seat 31 can be driven to rotate to drive the peripheral side wheels 32 to rotate circumferentially. During the circumferential rotation process, several peripheral side wheels 32 will contact the uncoated surface of the film material in turn for tensioning, and since the film material is made of flexible material, it can be bent. The tensioning seat 31 rotates to make the two circumferential side wheels 32 simultaneously contact the film material for tensioning, or a single circumferential side wheel 32 contact the film material for tensioning. During the state switching process of the circumferential side wheels 32 contacting and detaching from the film material, the movement of the circumferential side wheels 32 will drive the film material that has been coated to shake, so that the tensioning seat 31 and the circumferential side wheels 32 can be used to tension the film material while also shaking the film material, thereby shaking off the bubbles generated on the coating surface of the film material during coating, and further improving the forming quality of the coating surface of the film material.

[0051] In the above technical scheme, the input wheel 21 and the output wheel 23 are both arranged on the same side of the main drum 22 to ensure that the output wheel 23 or the peripheral wheel 32 does not contact the coating surface of the film material, thereby avoiding the output wheel 23 contacting the coating surface of the film material and causing damage to the coating surface of the film material, thereby improving the coating forming quality on the film material. Secondly, the tensioning seat 31 and the peripheral wheel 32 can be used to tension the film material while shaking the film material, so as to shake and eliminate the bubbles generated on the coating surface during the coating of the film material, thereby further improving the forming quality of the coating surface of the film material.

[0052] As another embodiment provided by the present invention, the tensioning seat 31 is provided with a collecting chamber 311, and a flow-driving assembly 4 is arranged in a circumferential array in the collecting chamber 311. The flow-driving assembly 4 includes a flow-driving plate 41 and a driving seat 42. The driving seat 42 is slidably arranged, and the flow-driving plate 41 is movably assembled to have the following two stations:

[0053] Extending station: the flow-displacing plate 41 is parallel to the driving seat 42 to be close to the inner wall of the collecting chamber 311;

[0054] Flow-displacing station: the flow-displacing plate 41 is perpendicular to the driving seat 42 to extend into the collecting chamber 311;

[0055] Among them, the driving seat 42 is driven to slide back and forth so that the flow-driving plate 41 remains in the extended position and moves to the opening of the collecting chamber 311, and then the driving seat 42 drives the flow-driving plate 41 to switch from the extended position to the flow-driving position and keeps the flow-driving plate 41 in the flow-driving position and moves to the inside of the collecting chamber 311 and then switches to the extended position.

[0056] Specifically, Figure 4As shown, the driving seat 42 is reciprocatingly slidably arranged in the tensioning seat 31 through the sliding part 422 thereon, and the flow-driving plate 41 has an extension position and a flow-driving position. During the coating operation in the vacuum coating chamber, the coating material vapor generated on the evaporation tank rises to coat the film material, and the coating material vapor will inevitably escape, so that part of the coating material vapor rises over the film material and is located on the inner wall of the vacuum coating chamber to form a coating. Since the tensioning seat 31 drives the peripheral wheel 32 to rotate circumferentially, the tensioning seat 31 The rotation makes it easy for some of the dissipated coating material vapor to gather around the tensioning seat 31. As the tensioning seat 31 rotates, the driving seat 42 is driven to slide. The driving seat 42 first makes the flow-driving plate 41 located inside the collecting chamber 311 in the extended position, and then the driving seat 42 slides toward the opening of the collecting chamber 311 to drive the flow-driving plate 41 to maintain the extended position and move toward the opening of the collecting chamber 311. The end of the flow-driving plate 41 extends to the outside of the opening of the collecting chamber 311, and then the driving seat 42 continues to maintain The driving plate 41 slides and rotates to switch from the extending position to the driving position. That is, at this time, the driving plate 41 is located at the opening of the collecting chamber 311 and rotates toward the inner side of the collecting chamber 311, thereby driving the plated material vapor gathered on the side of the tensioning seat 31 to flow into the collecting chamber 311. Then, the driving seat 42 is driven to slide in the opposite direction. At this time, the driving plate 41 keeps the driving position and slides toward the collecting chamber 311, so that the plated material vapor gathered on the side of the tensioning seat 31 is driven to flow into the collecting chamber 311 under the drive of the driving plate 41. The coating material vapor is located in the cavity 311, and the coating material vapor is located on the inner wall of the collection cavity 311 to form a coating. Then, when the flow-driving plate 41 slides to the position close to the inner end of the collection cavity 311, the driving seat 42 drives the flow-driving plate 41 to rotate and switch from the flow-driving position to the extension position, and then the reciprocating sliding of the driving seat 42 drives the flow-driving plate 41 to move in a cycle accompanied by the switching of the positions to collect the coating material vapor gathered around the tensioning seat 31 in the collection cavity 311, so as to avoid the problem of coating layer forming on the inner wall of the vacuum coating chamber and being difficult to clean.

[0057] Among them, a telescopic rod can be set in the tensioning seat 31 to drive the driving seat 42 to slide back and forth, or a motor can be used in conjunction with a threaded screw to drive the driving seat 42 to slide back and forth, or other structures known to those skilled in the art that can drive the driving seat 42 to slide back and forth can be replaced.

[0058] Furthermore, a contact piece 91 is detachably provided on the inner wall of the collecting chamber 311. When the coating material vapor is driven into the collecting chamber 311 by the flow-displacing plate 41, the coating material vapor will be located on the contact piece 91 to form a coating layer. When the coating operation is completed, the contact piece 91 can be removed to clean the collected coating layer. The connection method between the contact piece 91 and the collecting chamber 311 can be a detachable connection method known to those skilled in the art, such as bolt connection, clip connection or plug-in connection.

[0059] As another embodiment provided by the present invention, the collecting chamber 311 is in a truncated cone shape, and the flared end of the collecting chamber 311 is an opening portion. A storage chamber 312 is also provided in the tensioning seat 31, and the storage chamber 312 is connected to the storage chamber 312 through the narrow mouth portion 3111 of the collecting chamber 311.

[0060] Specifically, Figure 4 As shown, the collecting chamber 311 is in a truncated cone shape, and the flared end of the collecting chamber 311 is an opening portion, and the narrow portion 3111 of the collecting chamber 311 is connected to the storage chamber 312. During the coating process, it is inevitable that there will still be small clumps of air molecules in the vacuum coating chamber. If the coating material vapor in the evaporation tank rises and contacts the air molecules and then forms a coating on the film material, it will cause the coating to become black. However, by using the collecting chamber 311 in a truncated cone shape, and the narrow portion 3111 of the collecting chamber 311 is connected to the storage chamber 312, during the rotation of the tensioning seat 31, it is easy to gather the small clumps of air molecules floating in the vacuum coating chamber to the surrounding side of the tensioning seat 31, thereby reducing the probability of air molecules floating to between the evaporation tank and the main drum 22 and causing the coating to become black. Due to the existence of the flow-driving plate 41, the flow-driving plate 41 can also drive the small air molecules on the side of the tensioning seat 31 to flow into the collecting chamber 311 during the circulation process so as to collect the small air molecules. Since the interior of the collecting chamber 311 is in a truncated cone shape, the small air molecules are easily accumulated on the inner wall side of the narrow mouth 3111 of the collecting chamber 311 due to the tension factor. When the flow-driving plate 41 drives more small air molecules and coating material vapor into the collecting chamber 311, the small air molecules are easily collected and stored in the storage chamber 312 along the narrow mouth 3111, so as to utilize the collecting chamber 311 and the flow-driving plate 41 to realize the continuous capture of small air molecules in the vacuum coating chamber, thereby further avoiding the problem of blackening of the coating caused by the contact between the coating material vapor and the air molecules.

[0061] Secondly, since the flow-displacing plate 41 continuously captures the coating material vapor into the collection chamber 311 to form a coating, the coating that continuously thickens the inner wall of the narrow mouth 3111 can further increase the tension of small air molecules at the narrow mouth 3111, thereby improving the collection chamber 311's ability to capture small air molecules.

[0062] Furthermore, the storage chamber 312 may also be in a truncated cone shape, and the expanded end of the storage chamber 312 is connected to the narrow mouth portion 3111 of the collection chamber 311, thereby improving the storage and aggregation capacity of the storage chamber 312 for air molecules.

[0063] As another embodiment provided by the present invention, a sealing assembly is coaxially arranged on the base 1 with respect to the tensioning seat 31, which includes a movable seat 52 and a telescopic rod 51 rotatably arranged on the movable seat 52, the telescopic rod 51 penetrates and extends into the storage chamber 312, and the tensioning seat 31 is driven to rotate so that the movable seat 52 drives the telescopic rod 51 to move axially and extend into the narrow mouth portion 3111 to perform piston movement to intermittently seal the narrow mouth portion 3111.

[0064] Specifically, Figure 4 As shown, the movable seat 52 of the blocking assembly is slidably arranged on the base 1 through the axial movable part 521, and the movable seat 52 and the telescopic rod 51 are both coaxially arranged with the rotating shaft of the tensioning seat 31, and the telescopic rod 51 extends into the storage chamber 312 of the tensioning seat 31. When the tensioning seat 31 rotates so that the peripheral wheel 32 contacts and tensions the film material in turn, the movable seat 52 is driven to slide axially to make the telescopic rod 51 reciprocate axially relative to the narrow mouth portion 3111. When the driving seat 42 is driven to slide so that the flow-driving plate 41 maintains the flow-driving position and slides close to the collecting chamber 311, the telescopic rod 51 slides axially away from the narrow mouth portion 3111 to no longer block the narrow mouth portion 3111, thereby achieving that the coating material vapor and small agglomerate air molecules on the peripheral side of the tensioning seat 31 flow into the collecting chamber 311 under the drive of the flow-driving plate 41 and flow into the storage chamber 312 along the narrow mouth portion 3111 and are captured;

[0065] When the driving seat 42 drives the flow-driving plate 41 to rotate and switch from the flow-driving position to the extended position, and the driving seat 42 drives the flow-driving plate 41 to maintain the extended position and move toward the opening of the collecting chamber 311, the movable seat 52 slides axially to move the telescopic rod 51 closer to the narrow mouth 3111, thereby achieving the blocking of the narrow mouth 3111. At this time, since the flow-driving plate 41 moves toward the opening of the collecting chamber 311, the telescopic rod 51 blocks the narrow mouth 3111, which can avoid the dispersion of small clumps of air molecules in the storage chamber 312 caused by the movement of the flow-driving plate 41, and further improve the capture capacity of the tensioning seat 31, the flow-driving plate 41 and the collecting chamber 311 for small clumps of air molecules. Secondly, the telescopic rod 51 is used to slide back and forth in the tensioning seat 31, so that the tensioning seat 31 will generate axial vibration when the film material is tensioned, thereby reducing the friction between the circumferential wheel 32 and the film material, avoiding the problem of the circumferential wheel 32 pulling the film material when revolving and causing the film material to be stretched and damaged.

[0066] Furthermore, since the telescopic rod 51 moves axially to move as a piston in the narrow mouth portion 3111 and seals the narrow mouth portion 3111, and as the flow-displacing plate 41 continuously captures the vapor of the coating material, a coating will also be formed inside the narrow mouth portion 3111, and the piston movement of the telescopic rod 51 in the narrow mouth portion 3111 can scrape and remove the coating on the inner wall of the narrow mouth portion 3111, and when the flow-displacing plate 41 keeps extending out of the working position and moves toward the opening of the collection chamber 311, the coating debris scraped off the narrow mouth portion 3111 can be blown into the storage chamber 312 for collection, thereby preventing the coating debris from falling onto the membrane material and causing damage to the membrane material.

[0067] Furthermore, the blocking assembly further includes a first elastic member 53, the movable seat 52 is axially slidably arranged on the base 1, and the movable seat 52 is provided with a circumferential array of engaging teeth 522, and the tensioning seat 31 is provided with an engaging groove 313 in a circumferential array, the first elastic member 53 drives the movable seat 52 to slide axially close to the tensioning seat 31, when the tensioning seat 31 rotates until the engaging groove 313 is aligned with the engaging teeth 522, the first elastic member 53 drives the movable seat 52 to slide axially close to the tensioning seat 31, at this time the telescopic rod 51 is axially The movable seat 52 slides into the narrow portion 3111 to block the narrow portion 3111, and when the tension seat 31 rotates to the misalignment between the engaging groove 313 and the engaging tooth 522, the tension seat 31 pushes the movable seat 52 to overcome the sliding of the first elastic member 53, and the extension rod 51 slides axially away from the narrow portion 3111 to no longer block the narrow portion 3111, and the engaging tooth 522 of the movable seat 52 and the engaging groove 313 of the tension seat 31 are used to drive the telescopic rod 51, without the need for an additional driving source, thereby increasing the overall operating stability. The first elastic member 53 can be replaced by a spring, an airbag, an elastic plate, or other elastic objects known to those skilled in the art.

[0068] As another embodiment provided by the present invention, it also includes a speed-up component 7 arranged in the tensioning seat 31, which includes a sliding vane 71 slidably arranged on the inner wall of the collecting chamber 311, and a resisting scraper 711 is arranged at the first end of the sliding vane 71. The driving seat 42 is driven to slide close to the narrow mouth portion 3111 so that the resisting scraper 711 moves to push the flow-driving plate 41 to accelerate the rotation and switch from the flow-driving station to the extension station.

[0069] Specifically, Figure 4 and Fig.12As shown, the slide 71 is slidably arranged in the collection chamber 311, and the end of the slide 71 facing the opening of the collection chamber 311 is the first end, and the end of the slide 71 facing the narrow mouth 3111 is the second end. The first end of the slide 71 is provided with a resisting scraper 711. When the driving seat 42 is driven to slide so that the flow-driving plate 41 maintains the flow-driving position and slides close to the collection chamber 311, the driving seat 42 slides to drive the flow-driving plate 41 to rotate and switch from the flow-driving position to the extending position, and at this time, the driving seat 42 also drives the slide 71 to slide to The friction scraper 711 is made to contact the flow-driving plate 41 to drive the flow-driving plate 41 to accelerate its rotation, so that the sliding vane 71 is used to increase the rotation speed of the flow-driving plate 41 when switching from the flow-driving position to the extending position, thereby improving the reset stability of the flow-driving plate 41. Secondly, in the process of the sliding vane 71 pushing multiple flow-driving plates 41 to accelerate and approach the inner wall of the collection chamber 311, the accelerated movement of the flow-driving plate 41 will cause the air in the collection chamber 311 to move along the axis toward the narrow mouth 3111 of the collection chamber 311 due to the difference in flow velocity, thereby further improving the capture efficiency.

[0070] Furthermore, the speed-up assembly 7 also includes a sliding seat 72, a transmission gear member 74 and a second elastic member 73. The sliding seat 72 is slidably arranged and is pushed against by the driving seat 42. The sliding seat 72 is coupled to the transmission gear member 74. The transmission gear ring 741 of the transmission gear member 74 is coupled to the slide 71. A scratch hook 712 is provided on the second end of the slide 71. The second elastic member 73 enables the sliding seat 72 to slide close to the driving seat 42 to drive the slide 71 away from the flow-displacing plate 41 through the transmission gear member 74, and the scratch hook 712 extends into the narrow mouth portion 3111.

[0071] When the driving seat 42 slides close to and pushes the sliding seat 72 to overcome the sliding of the second elastic member 73, the sliding seat 72 drives the sliding plate 71 to slide close to and push against the flow-displacing plate 41 through the transmission gear member 74. The sliding seat 72 and the transmission gear member 74 are used to make the sliding plate 71 slide driven by the driving seat 42, thereby simplifying the structure. Secondly, a scratch hook 712 is provided at the second end of the slide 71. When the drive seat 42 drives the flow-displacing plate 41 to maintain the extended working position, the drive seat 42 no longer pushes the slide seat 72. At this time, the second elastic member 73 drives the slide seat 72 to slide and drives the slide 71 to slide close to the narrow mouth portion 3111 through the transmission gear member 74, and the scratch hook 712 extends into the narrow mouth portion 3111. At this time, the telescopic rod 51 slides axially into the narrow mouth portion 3111, so that the end side of the telescopic rod 51 is scratched by the scratch hook 712, so that the scratch hook 712 of the slide 71 is used to scrape and remove the coating on the peripheral side of the end of the telescopic rod 51, thereby avoiding the problem of reduced sealing between the telescopic rod 51 and the narrow mouth portion 3111 due to the coating formed on the peripheral side of the end of the telescopic rod 51, and reducing the overflow of air molecules.

[0072] As another embodiment provided by the present invention, two groups of elastic sheets 43 are symmetrically arranged on the driving seat 42, a locking portion 431 is arranged on the elastic sheet 43, a movable shaft portion 411 is arranged on the flow-driving plate 41, a partial gear portion 412 arranged on the movable shaft portion 411 is coupled with the rack portion 421 arranged on the driving seat 42, and the elastic sheet 43 is located in a default state so that the locking portion 431 is engaged in the locking groove 413 on the movable shaft portion 411. When the driving seat 42 drives the flow-driving plate 41 to move to the end of the sliding stroke of the flow-driving plate 41, the elastic sheet 43 is disengaged from the movable shaft portion 411 and the driving seat 42 slides to rotate the flow-driving plate 41 and enable the other group of elastic sheets 43 to be engaged and locked with the movable shaft portion 411.

[0073] Specifically, Figure 8 As shown, two groups of elastic sheets 43 are provided on the driving seat 42, and the elastic sheets 43 maintain a plate shape in a default state. When the elastic sheets 43 maintain the default state so that the locking portion 431 is engaged with the locking groove 413, the flow-repelling plate 41 is locked relative to the driving seat 42. If the elastic sheets 43 are deformed so that the locking portion 431 is disengaged from the locking groove 413, the flow-repelling plate 41 is unlocked relative to the driving seat 42. If the driving seat 42 is slid at this time, the flow-repelling plate 41 will be driven to rotate with the movable shaft portion 411 through the rack portion 421 and the partial gear portion 412.

[0074] The driving seat 42 is reciprocatingly slidably arranged on the tensioning seat 31, and the flow-driving plate 41 is also movably arranged on the tensioning seat 31, and the sliding stroke of the driving seat 42 is greater than the sliding stroke of the flow-driving plate 41 in the collecting chamber 311. First, the flow-driving plate 41 is located on the side of the sliding stroke close to the narrow mouth portion 3111 and maintains the extended position. At this time, the first group of elastic sheets 43 is engaged with the movable shaft portion 411 through the locking portion 431, thereby locking the flow-driving plate 41 in the extended position and relative to the driving seat 42. Then, the driving seat 42 moves toward the collecting chamber 311. 11, until the flow-driving plate 41 slides to the side of the sliding stroke facing away from the narrow mouth 3111, the flow-driving plate 41 slides into place, and the driving seat 42 continues to slide, so that the first group of elastic sheets 43 deform and disengage from the flow-driving plate 41, and the sliding of the driving seat 42 drives the flow-driving plate 41 to rotate and switch from the extended position to the flow-driving position, and then the second group of elastic sheets 43 are engaged with the movable shaft 411 due to the sliding of the driving seat 42, thereby completing the flow-driving plate 41 being kept in the flow-driving position and locked with the driving seat 42. Similarly, when the driving seat 42 slides on one side of the narrow mouth 3111, the flow-driving plate 41 first keeps the flow-driving position moving, until the second group of elastic sheets 43 are disengaged from the movable shaft 411, the flow-driving plate 41 is driven to rotate and switch from the flow-driving position to the extended position, and the first group of elastic sheets 43 are re-engaged with the movable shaft 411 to complete the locking. The driving seat 42 and the elastic sheet 43 are used to complete the reciprocating sliding of the flow-displacing plate 41 and the switching and locking of the working positions, thereby ensuring the stability of the flow-displacing plate 41 in circulating motion to capture air molecules or coating material vapor.

[0075] Secondly, when the flow-driving plate 41 is rotated and switched from the flow-driving position to the extension position, the slide 71 is driven to slide and the flow-driving plate 41 is pressed against the inner wall of the collection chamber 311 through the contact scraper 711. The slide 71 plays a role in limiting the rotation of the flow-driving plate 41, which facilitates the elastic sheet 43 to lock the flow-driving plate 41. Thus, the slide 71 is used to avoid the extrusion of air molecules or plating material vapor near the inner wall of the collection chamber 311 caused by the rotational jitter of the flow-driving plate 41 at the beginning of the sliding stroke.

[0076] As another embodiment provided by the present invention, the flow-displacing plate 41 is movably arranged in a sliding groove 3112 opened in the collecting chamber 311, and an ejection groove 314 is opened in the sliding groove 3112, and the other end of the ejection groove 314 is connected to the outside of the tensioning seat 31 and faces between the two peripheral wheels 32, and the driving seat 42 is located on the side close to the narrow mouth portion 3111 in the sliding stroke so that the rack portion 421 and part of the gear portion 412 are located in the ejection groove 314.

[0077] Specifically, Fig.14 As shown, an ejection slot 314 is opened in the sliding slot 3112, and the other end of the ejection slot 314 is connected to the outside of the tensioning seat 31. When the flow-driving plate 41 is located at one end of the sliding stroke close to the narrow mouth portion 3111, the driving seat 42 slides and drives the flow-driving plate 41 to rotate and switch from the flow-driving station to the extension station. At this time, the flow-driving plate 41 rotates close to and blocks the ejection slot 314 of the sliding slot 3112. In the process of the flow-driving plate 41 rotating close to the ejection slot 314, it is inevitable that some air molecules and coating material vapor will be ejected along the ejection slot 314 to the outside of the tensioning seat 31, and the ejection port of the ejection slot 314 is located between the two peripheral wheels 32. The flow-driving plate 41 allows metal vapor or air molecules to be ejected to impact and contact the back side of the film material that is resisted by the two peripheral wheels 32, thereby generating a small amplitude and high frequency vibration on this section of the film material, thereby shaking and removing smaller bubbles on the coating surface of the film material, further improving the forming quality of the coating surface of the film material.

[0078] Secondly, when the flow-driving plate 41 is located at one end of the sliding stroke close to the narrow mouth portion 3111, the rack portion 421 and the partial gear portion 412 are located in the ejection groove 314, and when the coating material vapor flows through the ejection groove 314, it will flow through the partial gear portion 412 and the rack portion 421, and then inevitably form a coating on the partial gear portion 412 and the rack portion 421, thereby improving the wear resistance and service life of the flow-driving plate 41 and the driving seat 42, avoiding the high degree of freedom of movement of the flow-driving plate 41 and causing greater wear, and utilizing the coating to increase the activity life of the flow-driving plate 41.

[0079] As another embodiment provided by the present invention, a rotating wheel 61 and a transmission rod 62 are provided in the tensioning seat 31, and a rod portion 611 is provided on the rotating wheel 61. The end of the rod portion 611 is rotatably connected to the transmission rod 62, and the other end of the transmission rod 62 is rotatably connected to the driving seat 42. The rotating wheel 61 is driven to rotate to drive the driving seat 42 to slide reciprocally through the rod portion 611 and the transmission rod 62.

[0080] Specifically, the rotating wheel 61 is connected to the driving seat 42 through the rod portion 611 and the transmission rod 62 thereon. When the rotating wheel 61 is driven to rotate continuously, a connecting rod structure is formed through the rod portion 611 and the transmission rod 62, so that the rotating wheel 61 drives the driving seat 42 located in the tensioning seat 31 to maintain reciprocating sliding through the rod portion 611 and the transmission rod 62. The reciprocating sliding of the driving seat 42 is achieved by utilizing the rotating wheel 61 and the transmission rod 62, thereby simplifying the device structure and improving the operating stability.

[0081] Furthermore, a worm wheel 63 and a worm member 64 are rotatably arranged in the tensioning seat 31, the worm member 64 is coupled to the ring tooth portion 11 on the base 1 through the second coupling tooth 641, the worm member 64 is coupled to the worm wheel 63, and the worm wheel 63 is rotatably coupled to the rotating wheel 61 through the first coupling tooth 631. When the tensioning seat 31 is driven to rotate on the base 1, the ring tooth portion 11 of the base 1 drives the worm member 64 to rotate, and the worm member 64 drives the worm wheel 63 to rotate, and the worm wheel 63 drives the rotating wheel 61 to rotate continuously through the first coupling tooth portion 631, so that the worm wheel 63 and the worm member 64 are used to realize that when the tensioning seat 31 is driven to rotate, the rotating wheel 61 keeps rotating continuously to drive the driving seat 42, without adding an additional driving source, simplifying the driving structure and improving the operation stability.

[0082] Working principle:

[0083] S1, the film material is loaded onto the film material conveying mechanism in the vacuum coating chamber, the film material first passes through the input wheel 21 and the main drum 22, and then passes through the partial peripheral wheel 32 of the tensioning seat 31 and the output wheel 23 in sequence to be output to the winding roller, the forced refrigeration system is started, and the air path is connected;

[0084] S2. Close the door of the vacuum coating chamber to ensure that the vacuum coating chamber is in a closed state, and then start the vacuum extraction equipment to extract the vacuum in the vacuum coating chamber;

[0085] S3, turning on the power of the evaporation tank, the evaporation tank heats the evaporation target material to the melting point and vaporizes it;

[0086] S4, the film material conveying mechanism is turned on, and the target material vapor generated on the evaporation tank rises to form a coating on the film material located at the main drum 22. The input wheel 21 and the main drum 22 rotate to control the coating surface of the film material to move over the evaporation tank, and the output wheel 23 rotates to control the film material to be wound on the winding roller with the coating surface facing away from the output wheel 23 and the peripheral wheels 32. The tensioning seat 31 is located on the base 1 and rotates to make the peripheral wheels 32 rotate circumferentially. During the circumferential rotation of the peripheral wheels 32, the non-coated surface of the film material passing through the main drum 22 is cyclically contacted and tensioned and then disengaged, thereby entering a normal evaporation state and performing a step-by-step evaporation operation.

[0087] S5. After the evaporation is completed, turn off the film material conveying mechanism, then turn off the power of the evaporation tank, and finally turn off the vacuum extraction equipment, return to temperature, balance the atmospheric pressure, and open the cabin.

[0088] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A method for preparing a colorful reflective film by vacuum evaporation, characterized in that: The steps include: S1, the film material is loaded onto the film material conveying mechanism in the vacuum coating chamber, the film material first passes through the input wheel (21) and the main drum (22), and then passes through the partial peripheral wheel (32) of the tensioning seat (31) and the output wheel (23) in sequence to be output to the winding roller, the forced refrigeration system is started, and the air path is connected; S2. Close the door of the vacuum coating chamber to ensure that the vacuum coating chamber is in a closed state, and then start the vacuum extraction equipment to extract the vacuum in the vacuum coating chamber; S3, turning on the power of the evaporation tank, the evaporation tank heats the evaporation target material to the melting point and vaporizes it; S4, the film material conveying mechanism is turned on, the target material vapor generated on the evaporation tank rises to form a coating on the film material located at the main drum (22), the input wheel (21) and the main drum (22) rotate to control the coated surface of the film material to move over the evaporation tank, the output wheel (23) rotates to control the film material to be wound on the winding roller with the coated surface facing away from the output wheel (23) and the peripheral wheel (32), and the tensioning seat (31) located on the base (1) rotates to make the plurality of peripheral wheels (32) rotate in a circumferential direction. During the circumferential rotation of the peripheral wheels (32), the non-coated surface of the film material passing through the main drum (22) is cyclically contacted and tensioned and then disengaged, thereby entering a normal evaporation state and performing a step-by-step evaporation operation; S5. After the evaporation is completed, the film material conveying mechanism is turned off, the power supply of the evaporation tank is turned off, and finally the vacuum extraction equipment is turned off, the temperature is returned to normal, the atmospheric pressure is balanced, and the cabin is opened; The tensioning seat (31) is provided with a collecting chamber (311), and a flow-displacing assembly (4) is arranged in an array on the inner circumference of the collecting chamber (311). The flow-displacing assembly (4) comprises a flow-displacing plate (41) and a driving seat (42). The driving seat (42) is slidably arranged, and the flow-displacing plate (41) is movably assembled to have the following two working positions: Extending station: the flow-displacing plate (41) is parallel to the driving seat (42) so as to be in close contact with the inner wall of the collecting chamber (311); Flow-displacing station: the flow-displacing plate (41) is perpendicular to the driving seat (42) to extend into the collecting chamber (311); The driving seat (42) is driven to slide back and forth so that the flow-displacing plate (41) remains in the extended position and moves to the opening of the collecting chamber (311), and then the driving seat (42) drives the flow-displacing plate (41) to switch from the extended position to the flow-displacing position and so that the flow-displacing plate (41) remains in the flow-displacing position and moves to the inside of the collecting chamber (311) and then switches to the extended position.

2. The method for preparing a colorful reflective film by vacuum evaporation according to claim 1, characterized in that: The collecting chamber (311) is in a truncated cone shape, and the expanded end of the collecting chamber (311) is an opening portion. A storage chamber (312) is also provided in the tensioning seat (31), and the storage chamber (312) is connected to the storage chamber (312) through the narrow opening portion (3111) of the collecting chamber (311).

3. The method for preparing a colorful reflective film by vacuum evaporation according to claim 2, characterized in that: The base (1) is coaxially provided with a blocking assembly about the tensioning seat (31), comprising a movable seat (52) and a telescopic rod (51) rotatably provided on the movable seat (52), the telescopic rod (51) extending through the storage chamber (312), and the tensioning seat (31) is driven to rotate so that the movable seat (52) drives the telescopic rod (51) to axially move into the narrow mouth (3111) to cause piston movement so as to intermittently block the narrow mouth (3111).

4. The method for preparing a colorful reflective film by vacuum evaporation according to claim 3, characterized in that: It also includes a speed-up component (7) disposed in the tensioning seat (31), which includes a sliding plate (71) slidably disposed on the inner wall of the collecting chamber (311), the first end of the sliding plate (71) being provided with a resisting scraper (711), and the driving seat (42) being driven to slide closer to the narrow mouth portion (3111) so that the resisting scraper (711) moves to resist the flow-displacing plate (41) to accelerate the rotation from the flow-displacing position to the extending position.

5. The method for preparing a colorful reflective film by vacuum evaporation according to claim 4, characterized in that: The speed-up assembly (7) further comprises a sliding seat (72), a transmission gear member (74) and a second elastic member (73); the sliding seat (72) is arranged to slide and is pushed against by the driving seat (42); the sliding seat (72) is coupled to the transmission gear member (74); a transmission gear ring (741) of the transmission gear member (74) is coupled to the sliding plate (71); a scratch hook (712) is provided on the second end of the sliding plate (71); the second elastic member (73) enables the sliding seat (72) to slide close to the driving seat (42) so as to drive the sliding plate (71) away from the flow-displacing plate (41) through the transmission gear member (74); and the scratch hook (712) extends into the narrow opening (3111).

6. The method for preparing a colorful reflective film by vacuum evaporation according to claim 4, characterized in that: Two groups of elastic sheets (43) are symmetrically arranged on the driving seat (42), a locking portion (431) is arranged on the elastic sheet (43), a movable shaft portion (411) is arranged on the flow-displacing plate (41), a partial gear portion (412) arranged on the movable shaft portion (411) is coupled with a rack portion (421) arranged on the driving seat (42), and the elastic sheet (43) is located in a default state so that the locking portion (431) is engaged in the locking groove (413) on the movable shaft portion (411). When the driving seat (42) drives the flow-displacing plate (41) to move to the end of the sliding stroke of the flow-displacing plate (41), the elastic sheet (43) is disengaged from the movable shaft portion (411) and the driving seat (42) slides to rotate the flow-displacing plate (41) and to engage and lock the other group of elastic sheets (43) with the movable shaft portion (411).

7. The method for preparing a colorful reflective film by vacuum evaporation according to claim 6, characterized in that: The flow-displacing plate (41) is movably disposed in a sliding groove (3112) provided in the collecting chamber (311), and a spraying groove (314) is provided in the sliding groove (3112), the other end of the spraying groove (314) being connected to the outside of the tensioning seat (31) and facing between the two peripheral wheels (32), and the driving seat (42) is located on a side close to the narrow mouth (3111) in the sliding stroke so that the rack portion (421) and part of the gear portion (412) are located in the spraying groove (314).

8. The method for preparing a colorful reflective film by vacuum evaporation according to claim 1, characterized in that: A rotating wheel (61) and a transmission rod (62) are arranged in the tensioning seat (31); a rod portion (611) is arranged on the rotating wheel (61); an end of the rod portion (611) is rotationally connected to the transmission rod (62); the other end of the transmission rod (62) is rotationally connected to the driving seat (42); the rotating wheel (61) is driven to rotate so as to drive the driving seat (42) to slide back and forth through the rod portion (611) and the transmission rod (62).

9. The method for preparing a colorful reflective film by vacuum evaporation according to claim 8, characterized in that: A worm wheel (63) and a worm member (64) are rotatably arranged in the tensioning seat (31); the worm member (64) is coupled to the ring tooth portion (11) on the base (1) via a second coupling tooth (641); the worm member (64) is coupled to the worm wheel (63); and the worm wheel (63) is rotatably coupled to the rotating wheel (61) via a first coupling tooth (631).

Images