CN212335279U

CN212335279U - Transverse rainbow film production device with regular prism-shaped main drum

Info

Publication number: CN212335279U
Application number: CN202021093361.2U
Authority: CN
Inventors: 刘思远
Original assignee: Hefei Huiyao Vacuum Material Co ltd
Current assignee: Hefei Huiyao Vacuum Material Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-01-12
Anticipated expiration: 2030-06-15

Abstract

The utility model relates to the technical field of vacuum evaporation, in particular to a transverse rainbow film production device with a regular prism-shaped main drum; the vacuum evaporation device comprises a vacuum bin, wherein an unwinding roller, a winding roller and a plurality of guide rollers are arranged in the vacuum bin, an evaporation substrate is arranged on the unwinding roller, a first variable frequency motor is arranged at one end of the winding roller and connected with a frequency converter, an evaporation chamber is arranged at the lower end of an inner cavity of the vacuum bin, a regular prism-shaped main drum is arranged in the vacuum bin, the cross section of the regular prism-shaped main drum is a regular N-polygon, and N is more than or equal to 8 and less than or equal to 64; the utility model discloses a positive prism shape owner drum that sets up can make the positive prism shape owner drum go up the point on every plane different with the distance of evaporation source at the coating by vaporization in-process for the cladding material thickness of the different positions on the positive prism shape owner drum coplanar is different, thereby makes to demonstrate the various strip of different colours on horizontal after the coating by vaporization, and the principle of its whole device when vacuum coating is unusual, and the effect of the horizontal rainbow film of preparation is excellent.

Description

Transverse rainbow film production device with regular prism-shaped main drum

Technical Field

The utility model relates to a vacuum evaporation technical field, concretely relates to horizontal rainbow film apparatus for producing with positive prism shape owner drum.

Background

The process of heating the target material to sublimate and plate the target material on the surface of the substrate in a vacuum environment is called vacuum coating. The vacuum coating is characterized in that a target material (such as zinc sulfide) is heated and sublimated to be coated on the surface of a rolled film material (a PTE film, a PP film, an OPP film, a light-reflecting plant film and the like) in a vacuum environment, and then the zinc sulfide layer on the rolled film material presents a color, so that the rolled film material is bright in appearance. Currently, the reflective films prepared by vacuum evaporation are classified into high-brightness single-color reflective films and multi-color reflective films (i.e., rainbow films). The thickness of the target material plated on the surface of the film rolling material is required to be uniform in the preparation process of the monochromatic highlight reflective film, so that a film surface with a single color is presented under light; the preparation of the rainbow film is just opposite to that of the highlight reflective film, and the thickness of a target material plated on the surface of a coiled material needs to be controlled to be non-uniform in the preparation process, and then the rainbow film presents with colorful film surfaces under the irradiation of light.

The traditional vacuum evaporation principle of the rainbow film is that a film winding material is wound on a cylindrical main drum through a traction device and passes through the upper part of an evaporation tank in a vacuum chamber at a constant speed, the evaporation tank is internally provided with a plurality of evaporation boats at intervals and in a staggered mode, a target material is in a divergent state during evaporation, coating layers are mutually staggered and overlapped when being attached to the surface of the film winding material, and the overlapping effect of each position is different, so that the longitudinal thickness of the target material coated on the film winding material during evaporation and sublimation is not uniform, and the interference of the coating layers of the target materials with different thicknesses to light is different, so that a colorful film surface is presented in the longitudinal direction; for example, the invention of patent No. CN109468591A discloses a method for preparing a colorful reflective film by vacuum evaporation process, the principle of evaporation rainbow film preparation is the same as the conventional rainbow film preparation principle, because the film material is wound on a cylindrical main drum and passes through the evaporation tank at a constant speed, the thickness of the coating layer on the film material in the traction direction (i.e. transverse direction) is uniform, and because of the special arrangement of the evaporation target material, the thickness of the film material in the longitudinal direction is not uniform, so as to prepare the longitudinal rainbow film.

Also as the utility model with the patent number of CN2848871Y, a high vacuum electroplating device for producing rainbow film or paper is disclosed, the main structure of which comprises a coated vacuum working chamber and a high vacuum extraction device, the interior of the coated vacuum working chamber is divided into an upper chamber and a lower chamber by a partition board, the upper chamber is a low vacuum winding chamber and is internally provided with two winding and unwinding rollers and four driven rollers, the lower chamber is a high vacuum evaporation chamber, the upper right corner of an evaporation tank is provided with a funnel container for supplementing evaporation materials, and a feeding channel connecting the funnel container and the evaporation tank is provided with an opening and closing regulating valve; the utility model discloses a vacuum plating equipment is all through rolling up the membrane material around cylindrical main drum and at the uniform velocity through on the evaporation tank, the rainbow film of its preparation all can only guarantee that coating material appears the color bar on vertical, and it is the same to go up the colour at rolling up membrane pulling direction (transversely promptly), and its whole face presents vertical rainbow film. The longitudinal rainbow film prepared is limited by the width of the film rolling material, so that the longitudinal rainbow film cannot be further longer in color woven belts and filaments, and the application field of the longitudinal rainbow film is greatly limited. Aiming at the defects that the existing vacuum coating machine can only prepare the transverse rainbow film, the design of the transverse rainbow film production device with the regular prism-shaped main drum is a technical problem to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a horizontal rainbow film apparatus for producing with regular prism shape owner drum has been designed to solve current vacuum evaporation rainbow film technique and can only vertically evaporate the rainbow film, can't realize the not enough of horizontal evaporation rainbow film.

The utility model discloses a realize through following technical scheme:

a transverse rainbow film production device with a regular prism-shaped main drum comprises a vacuum bin, wherein an unwinding roller, a winding roller and a plurality of guide rollers are arranged in the vacuum bin, an evaporation substrate is arranged on the unwinding roller, a first variable frequency motor is arranged at one end of the winding roller and is connected with a frequency converter, an evaporation chamber is arranged at the lower end of an inner cavity of the vacuum bin, a vacuum pumping system is arranged outside the vacuum bin and is communicated with the vacuum bin, the regular prism-shaped main drum is arranged in the vacuum bin, the section of the regular prism-shaped main drum is a regular N-edge shape, N is more than or equal to 8 and less than or equal to 64, a second variable frequency motor is arranged at one end of the regular prism-shaped main drum and is also connected with the frequency converter, the lower end drum surface of the regular prism-shaped main drum extends into the evaporation chamber, and the hollow inner cavity of the regular prism-shaped main drum is connected with a cooling system, the evaporation coating substrate is sequentially wound on the winding roller through the guide roller, the right prism-shaped main drum and the guide roller, an evaporation tank is arranged on the bottom wall of the evaporation coating chamber under the right prism-shaped main drum, a first electrode column and a second electrode column are arranged in the evaporation tank, a plurality of evaporation boats are continuously arranged side by side between the first electrode column and the second electrode column, and evaporation coating targets are placed in the evaporation boats.

As a further arrangement of the above scheme, each ridge line of the regular prism-shaped main drum is provided with a chamfer, and the chamfer arranged at the ridge line can prevent the evaporation substrate from being scratched due to sharp ridge lines.

As a further arrangement of the above scheme, the vacuum pumping system comprises a mechanical pump and a diffusion pump which are arranged outside the vacuum chamber, vacuum tubes are connected to the mechanical pump and the diffusion pump, valves are arranged on the vacuum tubes, and the ends of the vacuum tubes are connected with the vacuum chamber; the whole vacuum-pumping system can ensure that the pressure in the vacuum bin keeps close to a vacuum state in the vacuum evaporation process.

As a further arrangement of the scheme, the cooling system is a Freon forced refrigeration system which is connected with a hollow inner cavity of the regular prism-shaped main drum through a pipeline; the refrigerating effect of the Freon forced refrigerating system is obvious, and the refrigerating system in the device is preferred.

When the traditional longitudinal rainbow film vacuum evaporation is carried out, a plurality of evaporation boats in the evaporation tank are longitudinally arranged at intervals and in a staggered way, then the evaporation boat is electrified and heated through the positive and negative electrode columns, evaporation target materials (such as zinc sulfide, magnesium fluoride and the like) placed in the evaporation boat are sublimated under the action of high temperature and move upwards from the evaporation tank in a divergent state, meanwhile, an evaporation coating substrate (such as a PTE film, an OPP film and the like) is wound on the cylindrical main drum and passes right above the evaporation tank at a constant speed under the traction of the cylindrical main drum and the winding roller, and at the moment, the evaporation coating target can realize uniform coating along the traction direction (namely the transverse direction) of the evaporation coating substrate in the upward movement process, meanwhile, due to the longitudinal interval and staggered arrangement of the evaporation boat, the thickness of the coating in the longitudinal direction of the evaporation substrate is not uniform, and the film surface after evaporation presents a plurality of colors in the longitudinal direction (refer to figure 4). However, in the practical application process of the longitudinal rainbow film, because the width of the evaporation substrate (such as a PTE film, an OPP film, etc.) is limited, the prepared rainbow film cannot be made into a ribbon or a filament for application, and thus the application field of the prepared longitudinal rainbow film is greatly limited.

The transverse rainbow film production device with the regular prism-shaped main drum is quite different from the traditional vacuum evaporation rainbow film in principle. The main drum is changed from a traditional cylindrical shape to a regular prism shape in the device, and the mode that the constant speed passes through the upper part of the evaporation coating groove in the traditional vacuum coating process is changed into the mode that the frequency converter controls the variable frequency motor to adjust the rotating speed so as to realize the non-constant speed passing through the upper part of the evaporation coating groove. In addition, the side-by-side continuous design of the evaporation boat in the evaporation tank of the invention ensures that the coating thickness in the longitudinal direction is uniform in the vacuum evaporation process, and the coating thickness in the traction direction (namely, the transverse direction) of the evaporation substrate is nonuniform. The main principle is that the drumhead of the regular prism-shaped main drum is formed by connecting a plurality of planes, and the circular diameters of the motion tracks of different points on each plane are different in the rotating process. Referring to fig. 2, for example, the motion trajectory of the point at the ridge line of each plane is a, the trajectory of the point at the center of each plane is B, the obvious motion trajectory a is a circumscribed circle of a regular polygon, and the motion trajectory B is an inscribed circle of the regular polygon, which results in that the distances between the two points and the evaporation source during the motion process are different, and the evaporation target material is in a divergent shape during the evaporation and sublimation processes, so that the thickness of the coating layer on the same plane is uneven, and the surface of the evaporation substrate on the same plane is in different colors along the traction direction (i.e. the transverse direction). The movement tracks of all the points on the drum surface of the traditional cylindrical main drum are overlapped (refer to the attached figure 3), so that the coating thickness of the surface of the evaporation substrate is the same, and the surface of the evaporation substrate presents a high-brightness single-color reflecting film surface. In addition, this application is through the top that the non-uniform velocity of control coating by vaporization substrate passes through the evaporation tank, its different traction speed makes coating by vaporization substrate surface different with evaporation sublimation's coating by vaporization target contact time, thereby can make the cladding material thickness of regular prism shape primary drum on the different planes of rotation in-process also inequality, thereby make coating by vaporization substrate surface everywhere on the direction of pulling (transversely promptly) all inequality in whole traction coating by vaporization process, and its interference effect to light of cladding material of different thickness is different, the rainbow film of its preparation can demonstrate multiple colour on horizontal.

Has the advantages that:

1. the utility model discloses a horizontal rainbow film apparatus for producing with regular prism shape main drum is when carrying out vacuum evaporation to rolling up membrane material, and it can make the point on every plane on the regular prism shape main drum different with the distance of evaporation source in the evaporation process through changing traditional cylindrical main drum into regular prism shape main drum, makes the cladding material thickness of different positions on the same plane of regular prism shape main drum different to make the evaporation coating substrate after the evaporation coating present the various strip of different colours on horizontal; meanwhile, the invention also controls the evaporation base material to pass above the evaporation source at a non-uniform speed, so that the contact time between the surface of the evaporation base material on different planes of the regular prism-shaped main drum and the evaporation target material subjected to evaporation and sublimation is different, the thickness of each plating layer on the surface of the evaporation base material in the traction direction (namely the transverse direction) is different in the whole traction evaporation process, and the technical effect of preparing the transverse rainbow film is achieved. In general, the principle of the whole device of the application in vacuum coating is completely different from that of the traditional technology, and the effect of the prepared transverse rainbow film is excellent.

2. The utility model discloses the horizontal rainbow film of preparation can realize that the vertically ascending colour of face is the same, presents multiple colour along face pulling direction (transversely promptly), has effectively solved the not enough of the vertical rainbow film of current vacuum evaporation plating machine only preparation, and the horizontal rainbow film of its preparation has effectively solved the limited problem of current vertical rainbow film because of the limited application field that leads to of evaporation plating substrate broad width, can the horizontal rainbow film of large-scale production, and the horizontal rainbow film that makes the preparation has high economic value.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a plan view of the interior of a vacuum chamber according to the present invention;

FIG. 2 is a schematic diagram of the main drum of the regular prism shape in the vacuum coating process;

FIG. 3 is a schematic diagram of a conventional cylindrical main drum during vacuum coating;

fig. 4 is a schematic diagram of the vacuum coating principle of the existing longitudinal rainbow film.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be further described with reference to the accompanying fig. 1-2.

Example 1

This embodiment 1 has described a device for producing horizontal vacuum evaporation coating rainbow film specially, refers to fig. 1, and its major structure includes a vacuum chamber 1, is provided with unwinding roller 2, wind-up roll 3 and a plurality of guide roll 4 in vacuum chamber 1. The unwinding roll 2 is provided with a deposition substrate 5, and the deposition substrate 5 is of a wide variety, and specifically, a PTE film, a PP film, an OPP film, a light-reflecting plant film, and the like can be selected, but the deposition substrate 5 is not limited to the above materials. A first variable frequency motor 6 is arranged at one end of the winding roller 2, the first variable frequency motor 6 and a frequency converter (not shown in the figure) are provided with a PLC (programmable logic controller) programming control system inside the frequency converter, and the frequency transmitted to the first variable frequency motor 6 by the frequency converter is continuously changed through a preset control program, so that the non-uniform winding of the winding roller 2 is achieved.

The lower end of the inner cavity of the vacuum chamber 1 is provided with an evaporation chamber 7, and the outside of the vacuum chamber 1 is provided with a vacuum pumping system (not shown in the figure), because the vacuum pumping system in the vacuum evaporation machine is the prior art, the drawing is not shown here, the whole vacuum pumping system simply comprises a mechanical pump and a diffusion pump which are arranged outside the vacuum chamber 1, vacuum tubes are connected to the mechanical pump and the diffusion pump, valves are arranged on the vacuum tubes, the end parts of the vacuum tubes are connected with the vacuum chamber, and the internal pressure of the vacuum chamber 1 in the vacuum evaporation process can be kept at 1.3 multiplied by 10 under the action of the mechanical pump and the diffusion pump⁰To 1.3X 10^-4In the Pa range.

The key technical point of the device for realizing the transverse rainbow film through the transverse evaporation is that a regular prism-shaped main drum 8 is arranged in a vacuum chamber, the section of the regular prism-shaped main drum 8 is a regular polygon, the number of edges of the regular polygon is in the range of 8 to 64, and in order to prevent the evaporation base material 5 from being scratched acutely at the edge line of the regular prism-shaped main drum 8, a chamfer (not shown in the figure) is arranged at each edge line of the regular prism-shaped main drum 8. Specifically, the cross section of the regular-prism-shaped primary drum 8 in the present embodiment is a regular dodecagon. A second variable frequency motor 9 is arranged at one end of the regular prism-shaped main drum 8, the second variable frequency motor 9 is also connected with a frequency converter, and the rotating speed of the wind-up roll 3 and the regular prism-shaped main drum 8 can be synchronously changed through the adjusting action of the frequency converter. The drum surface at the lower end of the regular prism-shaped main drum 8 extends into the evaporation chamber 7, the hollow inner cavity of the regular prism-shaped main drum 8 is connected with a cooling system, the cooling system is also the prior art and is not shown in the figure, specifically, the cooling system is a commonly used Freon forced refrigeration system, and the Freon forced refrigeration system is connected with the hollow inner cavity of the regular prism-shaped main drum 8 through a pipeline, so that the rapid cooling effect is achieved. In the vacuum coating process, the evaporation substrate 5 is sequentially wound on the winding roller 3 through the guide roller 4, the regular prism-shaped main drum 8 and the guide roller 4. Then, an evaporation tank 10 is provided on the bottom wall of the evaporation chamber 7 located just below the regular prism-shaped main drum 8, a first electrode column 11 and a second electrode column 12 are provided in the evaporation tank 10, a plurality of evaporation boats 13 continuously provided side by side are provided between the first electrode column 11 and the second electrode column 12, and an evaporation target (not shown in the figure) is placed in the evaporation boats 13, and the most commonly used evaporation target is zinc sulfide, magnesium fluoride, tin oxide, silicon dioxide, tantalum pentoxide, or the like.

Finally, referring to fig. 2, it should be noted that in the process of rotation of the regular prism-shaped main drum 8 in the apparatus, the movement trajectories of different points on each plane of the regular prism-shaped main drum 8 are different, so that the distances between the evaporation substrate 5 (a PTE film, a PP film, an OPP film, and a light-reflecting plant film) and the evaporation target in the evaporation boat 13 are different in the film coating process, and the evaporation target is in a divergent state in the evaporation and sublimation process, so that the amounts of the divergent evaporation target attached to the surface of the film are different, and the thicknesses of the coatings of the films on the same plane in the traction direction (i.e., in the transverse direction) are different. Meanwhile, the speed of the film passing through the upper part of the evaporation tank 10 is changed into a non-uniform speed state by the device, and in the process of vacuum coating in the non-uniform speed state, the contact time of the film surface and the evaporation sublimed evaporation target material is different, so that the thickness of the whole film surface in the traction direction is different, and the prepared rainbow film presents various colors in the transverse direction.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A transverse rainbow film production device with a regular prism-shaped main drum comprises a vacuum bin, wherein an unwinding roller, a winding roller and a plurality of guide rollers are arranged in the vacuum bin, an evaporation substrate is arranged on the unwinding roller, a first variable frequency motor is arranged at one end of the winding roller and is connected with a frequency converter, an evaporation chamber is arranged at the lower end of an inner cavity of the vacuum bin, a vacuum pumping system is arranged outside the vacuum bin and is communicated with the vacuum bin, the transverse rainbow film production device is characterized in that the vacuum bin is internally provided with the regular prism-shaped main drum, the cross section of the regular prism-shaped main drum is a regular N-edge shape, N is more than or equal to 8 and less than or equal to 64, a second variable frequency motor is arranged at one end of the regular prism-shaped main drum and is also connected with the frequency converter, the drum surface at the lower end of the regular prism-shaped main drum extends into the evaporation chamber, and the hollow inner cavity of the regular prism-shaped main drum is connected with a cooling system, the evaporation coating substrate is sequentially wound on the winding roller through the guide roller, the right prism-shaped main drum and the guide roller, an evaporation tank is arranged on the bottom wall of the evaporation coating chamber under the right prism-shaped main drum, a first electrode column and a second electrode column are arranged in the evaporation tank, a plurality of evaporation boats are continuously arranged side by side between the first electrode column and the second electrode column, and evaporation coating targets are placed in the evaporation boats.

2. The transverse rainbow iris production apparatus of claim 1, wherein: and each ridge line of the regular prism-shaped main drum is provided with a chamfer.

3. The transverse rainbow iris production apparatus of claim 1, wherein: the vacuum pumping system comprises a mechanical pump and a diffusion pump which are arranged outside the vacuum bin, vacuum tubes are connected to the mechanical pump and the diffusion pump, valves are arranged on the vacuum tubes, and the end portions of the vacuum tubes are connected with the vacuum bin.

4. The transverse rainbow iris production apparatus of claim 1, wherein: the cooling system is a Freon forced refrigeration system which is connected with the hollow inner cavity of the regular prism-shaped main drum through a pipeline.