Vacuum coating device for adjusting metal vapor deposition width and control method thereof

Abstract

The invention discloses a vacuum coating device for adjusting the metal vapor deposition width and a control method of the vacuum coating device. The vacuum coating device for adjusting the metal vapor deposition width comprises a base, a rotary moving platform, a flow distribution box body, a heater, a laser range finder and a control system, the rotary moving platform comprises an angle rotating mechanism, a moving platform and a moving mechanism; the flow distribution box body is arranged on the moving platform through a moving mechanism, and a nozzle is arranged on the flow distribution box body; the heater covers the flow distribution box body and the nozzle; the laser range finders are arranged on the two sides of the metal strip respectively. The control system receives a distance signal measured by the laser range finder and controls the angle rotating mechanism to drive the moving platform to rotate, so that the horizontal deposition width of the metal steam is consistent with the width of the metal strip, and the position of the flow distribution box is adjusted through the moving mechanism, so that the metal steam is completely deposited on the metal strip. The horizontal width of metal vapor deposition can be adjusted in real time.

Description

Technical Field

[0001] The invention relates to the technical field of metal strip surface coating, and in particular to a vacuum coating device for adjusting the width of metal vapor deposition and a control method thereof. Background Art

[0002] With the development of the steel industry, the market has higher and higher requirements for coated plates, such as automotive plates and home appliance plates, which must not only have good deep drawing, paintability, and corrosion resistance, but also have good coating appearance and coating adhesion, which puts higher requirements on the coating process.

[0003] As a surface modification and coating process, vacuum coating has been widely used in the electronics, glass, plastics and other industries. The main advantages of vacuum coating technology are its environmental protection, good coating performance and diversity of materials that can be plated. The key to the application of vacuum coating technology for continuous strip steel lies in the continuous coating production, large area, high speed and large-scale production. Since the 1980s, major steel companies around the world have conducted a lot of research on this technology. This technology is receiving unprecedented attention and is considered to be an innovative surface coating process.

[0004] The vacuum coating technology currently disclosed in domestic and foreign documents mainly includes the following aspects:

[0005] 1) Integrated structure of evaporation crucible and flow distribution nozzle

[0006] European patents BE1009321A6 and BE1009317A61 respectively disclose Figure 1 , Figure 2 The crucible nozzle structure is Figure 1 In the structure, a cover 2 is added to the upper part of the crucible 1, so that a nozzle structure is formed between the upper cover 2 and the furnace wall for direct injection of evaporated metal. Figure 2 In the structure, a filter plate 3 is added to the evaporation crucible, and then the slit nozzle on the top is used to spray the metal vapor. In the design process of the nozzles of these two devices, one adopts lateral spraying and the other adopts vertical spraying from below, and the arrangement position of the nozzles is one for simultaneous spraying on both sides and the other for sequential spraying on both sides.

[0007] The related evaporation crucible and nozzle structure are also disclosed in patents JPS59177370A and US4552092A. Figure 3 A crucible nozzle structure with automatic replenishment of molten metal is provided. The nozzle 4 adopts a wider outlet, and a heater 5 is also arranged on the upper part of the crucible for heating with steam or the like. Figure 4 The crucible nozzle structure provided is developed from an arc 6 on one side for side spraying, and a heating tube 7 is also arranged on the outside of the crucible wall for heating the wall surface.

[0008] 2) Separate structure of evaporation crucible and flow distribution nozzle

[0009] Patent WO2018 / 020311A1 discloses a split crucible nozzle structure, such as Figure 5 As shown, in the device, the crucible is connected to a molten metal supply tank 8 at the bottom, and the upper part thereof delivers metal vapor to a tubular distributor and a steam nozzle at the front end through a split pipe 9, and then the metal vapor is sprayed to the metal plate at a high speed through the nozzle.

[0010] Chinese patent CN103249860A discloses a split flow distributor and nozzle structure, such as Figure 6 As shown, steam is delivered to the upper horizontal pipe 10 through a pipe, and a multi-hole nozzle is provided on the top of the horizontal pipe 10 to evenly spray the metal steam on the surface of the metal sheet.

[0011] In Chinese patent CN101175866A, a metal steam distributor and nozzle are disclosed, such as Figure 7 The cross-sectional form of the nozzle is shown. The outer surface of the flow distributor pipe 11 is wound with a wire to achieve heating of the pipe. The nozzle part is a square shell. Figure 8 As shown, a circular pipe made of another material is nested inside the square shell 12 for spraying metal steam, and the steam outlet form used by the nozzle is a porous type.

[0012] The above-mentioned technologies all involve the specific form of the nozzle during the coating process, but cannot adjust the horizontal width of the metal vapor deposition, nor can they make the metal vapor deposition width consistent with the width of the metal strip. Summary of the invention

[0013] In view of the problem that the width of metal vapor deposition cannot be adjusted in the prior art, the purpose of the present invention is to provide a vacuum coating device for adjusting the width of metal vapor deposition and a control method thereof, which can adjust the horizontal width of metal vapor deposition in real time so that the width of the deposited metal alloy is consistent with the width of the metal strip, and can also ensure the consistency of the coating of metal strips of different widths in different batches; the device of the present invention can obtain good coating appearance and coating bonding strength, reduce pollution emissions while facilitating personnel operation, reducing manual labor intensity, improving work efficiency, increasing the recovery rate of metal vapor at the edge of the strip, and reducing production costs.

[0014] In order to achieve the above object, the present invention adopts the following technical solution:

[0015] A first aspect of the present invention provides a vacuum coating device for adjusting the width of metal vapor deposition, comprising a base, a rotating movable platform, a flow distribution box, a heater, a laser rangefinder and a control system;

[0016] The rotating mobile platform includes an angle rotating mechanism disposed on the base, a mobile platform connected to the angle rotating mechanism, and a mobile mechanism disposed on the mobile platform; the angle rotating mechanism is used to rotate the mobile platform; the mobile mechanism is used to adjust the position of the distribution box on the mobile platform;

[0017] The flow distribution box is arranged on the moving platform through the moving mechanism, and a nozzle is arranged on the flow distribution box. Metal vapor passes through the flow distribution box and is ejected from the nozzle to form a metal vapor jet flow, which is deposited on the surface of the metal strip to form a coating.

[0018] The heater is coated on the flow distribution box and the nozzle to heat the flow distribution box and the nozzle;

[0019] The laser rangefinder is disposed on both sides of the metal strip to measure the distance between the laser rangefinder and the metal strip in real time;

[0020] The control system receives the distance signal measured by the laser rangefinder, controls the angle rotation mechanism to drive the mobile platform to rotate, so that the horizontal width of the metal vapor deposition is consistent with the width of the metal strip, and adjusts the position of the flow distribution box through the mobile mechanism to align the edge of the metal vapor jet with the edge of the metal strip.

[0021] Preferably, the angle rotation mechanism includes a rotating seat, a first servo motor arranged on the rotating seat, a coupling connected to the output shaft of the first servo motor, and a rotating assembly connected to the first coupling; the first servo motor drives the mobile platform to rotate through the first coupling and the rotating assembly, so that the horizontal width of the metal vapor deposition is consistent with the width of the metal strip.

[0022] Preferably, the rotating assembly includes a driving gear connected to the first coupling and a rotating gear meshing with the driving gear, the driving gear is arranged on the rotating seat, and the rotating gear is fixedly connected to the moving platform.

[0023] Preferably, the moving mechanism includes a second servo motor arranged on the moving platform, a second coupling connected to the output end of the second servo motor, and a screw assembly connected to the coupling; the screw assembly includes a ball screw connected to the second coupling and a screw slider arranged on the ball screw, the ball screw is fixed on the moving platform, and the screw slider is fixedly connected to the distribution box.

[0024] Preferably, a heat insulating layer is provided between the heater and the screw slider.

[0025] A second aspect of the present invention provides a control method for a vacuum coating device for adjusting the metal vapor deposition width as described in the first aspect of the present invention, comprising the following steps:

[0026] S1, the control system receives the distance measured by the laser rangefinder on both sides of the metal strip, obtains the target arc of rotation of the mobile platform and the target movement data of the distribution box, and outputs the rotation signal and the movement signal;

[0027] S2, after the angle rotation mechanism adjusts the movable platform to zero position, the movable platform is driven to rotate according to the rotation signal so that the horizontal width of the metal vapor deposition is consistent with the width of the metal strip;

[0028] S3, the moving mechanism moves the flow distribution box according to the moving signal to align the edge of the metal vapor jet flow with the edge of the metal strip;

[0029] S4, the heater heats the distribution box and the nozzle, and the metal vapor passes through the distribution box and is ejected from the nozzle to form a metal vapor jet flow, which is deposited on the surface of the metal strip to form a coating.

[0030] Preferably, in step S1, the target arc C of the rotation of the mobile platform is:

[0031]

[0032] W1=WW a -W b

[0033] Where C is the target arc of the mobile platform rotation;

[0034] W1 is the width of the metal strip, in mm;

[0035] W2 is the metal vapor deposition width, in mm;

[0036] W is the distance between the two laser rangefinders, in mm;

[0037] W a The distance measured by the laser rangefinder on the operating side, in mm;

[0038] W b The distance measured by the laser distance meter on the driving side, in mm.

[0039] Preferably, the target radian C of the mobile platform rotation ranges from 0 to 2π / 5.

[0040] Preferably, in step S1, the movement data of the distribution box is obtained as follows:

[0041] Calculate the distance W measured by the laser rangefinder on the operating side a Distance W measured by the laser distance meter on the driving side b The difference n is obtained, and the moving direction and distance of the flow distribution box are determined according to the difference n.

[0042] Preferably, the moving direction and moving distance of the flow distribution box are determined by the following method:

[0043] The difference n is: n=W a -W b When n>0, the second servo motor of the moving mechanism rotates forward, and the distribution box moves toward the operating side laser rangefinder When n < 0, the second servo motor of the moving mechanism is reversed, and the distribution box moves toward the laser rangefinder on the driving side. When n=0, the second servo motor of the moving mechanism does not work, and the flow distribution box does not move.

[0044] Preferably, step S2 includes the following process:

[0045] S21, after the mobile platform returns to the zero position, the first servo motor of the angle rotation mechanism rotates according to the target arc of the rotation signal to rotate the mobile platform;

[0046] S22, the first servo motor detects the rotation arc of the first servo motor in real time through the encoder until the arc detected by the encoder is consistent with the target arc in the rotation signal. At this time, the horizontal width of the metal vapor deposition is consistent with the width of the metal strip.

[0047] Preferably, step S3 includes the following process:

[0048] S31, the second servo motor of the moving mechanism rotates according to the target moving direction and the target moving distance in the moving signal, driving the flow distribution box to move;

[0049] S32, the second servo motor obtains the actual moving direction and actual moving distance of the distribution box in real time through a pulse feedback signal. When the actual moving direction and actual moving distance are consistent with the target moving direction and target moving distance in the moving signal, the edge of the metal steam jet is aligned with the edge of the metal strip.

[0050] Compared with the prior art, the present invention has the following beneficial effects:

[0051] 1. The vacuum coating device for adjusting the width of metal vapor deposition and the control method thereof of the present invention adjusts the position of the flow distribution box by means of a laser rangefinder and a mobile platform, and adjusts a certain angle by means of an angle rotation mechanism to tilt the mobile platform, so that the horizontal width of the metal vapor deposition is consistent with the width of the metal strip;

[0052] 2. The vacuum coating device for adjusting the metal vapor deposition width of the present invention does not need to replace the flow distribution box and the nozzle due to the change of the strip width, and will not cause the metal vapor in the pipeline to change its distribution through different flow distribution boxes and nozzles, thereby ensuring the consistency of the coating of metal strips of different widths in different batches;

[0053] 3. The vacuum coating device for adjusting the metal vapor deposition width and the control method thereof of the present invention can not only control the metal vapor deposition width through the angle rotation mechanism, but also make the metal vapor deposition width consistent with the metal strip width, so that the metal vapor is deposited on the metal strip to the greatest extent during the deposition process, thereby ensuring a high metal vapor recovery rate during the coating process, reducing the cost of production raw materials, and reducing pollution emissions;

[0054] 4. The vacuum coating device for adjusting the width of metal vapor deposition of the present invention does not need to break the original vacuum environment to replace the distribution box and the nozzle to adapt to the change in the width of the metal strip, which reduces the pollution of impurities in the air and maintains the consistency of the vacuum degree between different batches, so as to obtain a good coating appearance and coating bonding strength. At the same time, it is convenient for personnel to operate, reduces manual labor intensity, improves work efficiency, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0056] Figure 1 It is a schematic diagram of European patent BE1009321A6;

[0057] Figure 2 It is a schematic diagram of European patent BE1009317A61;

[0058] Figure 3 It is a schematic diagram of patent JPS59177370A;

[0059] Figure 4 It is a schematic diagram of patent US4552092A;

[0060] Figure 5 It is a schematic diagram of patent WO2018 / 020311A1;

[0061] Figure 6It is a schematic diagram of patent CN103249860A;

[0062] Figure 7 It is a schematic diagram of patent CN101175866A;

[0063] Figure 8 yes Figure 7 Schematic diagram of the medium square housing;

[0064] Fig. 9 It is a schematic structural diagram of a vacuum coating device for adjusting the metal vapor deposition width of the present invention;

[0065] Fig.10 It is a structural schematic diagram of the angle rotation mechanism of the present invention;

[0066] Fig.11 It is a structural schematic diagram of the mobile mechanism of the present invention;

[0067] Fig.12 It is a schematic diagram of the angle formed between the rotating mobile platform of the present invention and the horizontal direction of the metal strip;

[0068] In the figure, 1, crucible, 2, upper cover, 3, filter plate, 4, nozzle, 5, heater, 6, arc, 7, heating tube, 8, molten metal supply tank, 9, split pipeline, 10, horizontal pipeline, 11, distributor pipeline, 12, square shell, 13, metal strip, 14, metal vapor jet, 15, base, 16, operating side laser rangefinder, 17, driving side laser rangefinder, 18, first servo motor, 19, rotating assembly, 20, moving platform, 21, second servo motor, 22, ball screw, 23, heater, 24, distribution box, 25, steam pipeline, 26, screw slider. DETAILED DESCRIPTION

[0069] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form.

[0070] The vacuum coating device for adjusting the metal vapor deposition width provided by the present invention can flexibly and conveniently deposit metal vapor on a metal strip, and can not only control the deposition width of the metal vapor, but also ensure the consistency of the coating of metal strips of different widths in different batches. The device of the present invention can conveniently and quickly realize vacuum coating of metal strips, improve the recovery rate of metal vapor during the coating process, and reduce energy consumption, reduce pollution emissions, and achieve energy conservation and environmental protection.

[0071] Combination Fig. 9As shown, a vacuum coating device for adjusting the width of metal vapor deposition provided by the present invention includes a base 15, a rotating mobile platform, a flow distribution box 24, a heater 23, laser rangefinders 16 and 17, and a control system. The rotating mobile platform includes an angle rotation mechanism arranged on the base 15, a mobile platform 20 connected to the angle rotation mechanism, and a mobile mechanism arranged on the mobile platform 20; the angle rotation mechanism is used to rotate the mobile platform; the mobile mechanism is used to adjust the position of the flow distribution box 24 on the mobile platform 20. The flow distribution box 24 is arranged on the mobile platform 20 through the mobile mechanism, and a nozzle is arranged on the flow distribution box 24. Metal vapor is sprayed from the nozzle through the flow distribution box 24 to form a metal vapor jet flow, and is deposited on the surface of the metal strip 13 to form a coating. The heater 23 is coated on the flow distribution box 24 and the nozzle to heat the flow distribution box 24 and the nozzle. The heating temperature of the heater 23 is adjustable (for example, at 600-800°C). Laser rangefinders 16 and 17 are respectively arranged on both sides of the metal strip 13 to measure the distance between the laser rangefinder and the metal strip 13 in real time. The control system receives the distance signal measured by the laser rangefinder, controls the angle rotation mechanism to drive the mobile platform 20 to rotate, so that the horizontal width of the metal vapor deposited on the surface of the metal strip 13 by spraying the metal vapor is consistent with the width of the metal strip 13, and adjusts the position of the flow distribution box 24 through the mobile mechanism, so that the metal vapor is completely deposited on the metal strip 13, thereby ensuring a higher yield in the coating process, reducing production costs, and reducing pollution emissions.

[0072] Combination Fig.10 As shown, the angle rotation mechanism includes a rotating seat, a first servo motor 18 arranged on the rotating seat, a first coupling connected to the output shaft of the first servo motor 18, and a rotating assembly 19 connected to the first coupling; the first servo motor 18 drives the mobile platform 20 to rotate through the first coupling and the rotating assembly 19, so that the horizontal width of the metal vapor deposition is consistent with the width of the metal strip 13.

[0073] Combination Fig.10 As shown, the rotating assembly 19 includes a driving gear connected to the first coupling and a rotating gear meshing with the driving gear. The driving gear is arranged on a rotating seat, and the rotating gear is fixedly connected to the moving platform 20.

[0074] Combination Fig.11 As shown, the moving mechanism includes a second servo motor 21 arranged on the moving platform 20, a second coupling connected to the output end of the second servo motor 21, and a screw assembly connected to the coupling; the screw assembly includes a ball screw 22 connected to the second coupling and a screw slider 26 arranged on the ball screw 22, the ball screw 22 is fixed on the moving platform 20, and the screw slider 26 is fixedly connected to the distribution box 24.

[0075] In a specific embodiment, a heat insulating layer is provided between the heater 23 and the screw slider 26 .

[0076] In a specific embodiment, a nozzle is disposed on the top of the flow distribution box 24 , and the metal vapor enters the flow distribution box 24 through the steam pipe 25 and then is ejected through the nozzle to form a metal vapor jet flow 14 .

[0077] In a specific embodiment, the control system is a PLC or a driver; wherein the control system is respectively connected to the laser rangefinder, the first servo motor 18, the second servo motor 21, and the heater 23, and the control system receives the distance measured by the laser rangefinder on both sides of the metal strip 13 in real time, and controls the action of the first servo motor 18 and the second servo motor 21 by outputting a pulse signal or directly communicating and assigning a value, thereby realizing the adjustment of the mobile platform 20 and the distribution box 24.

[0078] Combination Fig. 9 As shown, the vacuum coating device for adjusting the metal vapor deposition width of the present invention does not need to replace the flow distribution box 24 and the nozzle due to the change in the width of the metal strip 13. The horizontal width of the metal vapor deposition can be directly controlled by adjusting the position of the movable platform 20 and the flow distribution box 24, and the consistency of the coating of metal strips of different widths in different batches can be ensured. At the same time, the metal vapor has a higher yield in the coating process, thereby reducing production costs and reducing pollution emissions.

[0079] The present invention also provides a control method for a vacuum coating device for adjusting the width of metal vapor deposition, comprising the following steps:

[0080] S1, the control system receives the distance measured by the laser rangefinder on both sides of the metal strip 13, obtains the target arc of rotation of the mobile platform 20 and the movement data of the flow distribution box 24, and outputs a rotation signal and a movement signal;

[0081] Specifically, the laser rangefinders on both sides of the metal strip 13 measure and transmit the distance W between them and the metal strip 13 in real time. a , W b After receiving the distance measured by the laser rangefinders on both sides of the metal strip 13, the control system obtains the width W1 of the metal strip 13 by calculation, and calculates the target arc of rotation of the mobile platform 20 (that is, the angle formed by the mobile platform 20 and the horizontal direction of the metal strip 13 after the rotation, and the zero position of the mobile platform 20 is the angle of 0 with the horizontal direction of the metal strip 13) and the target movement data of the distribution box 24, and then the control system outputs a rotation signal to the angle rotation mechanism, and outputs a movement signal to the movement mechanism;

[0082] Combination Fig.12 As shown, the width of the metal strip 13 is determined by the formula: W1 = WW a-W b Calculate, where W is the distance between the two laser rangefinders, in mm, which is a fixed distance and known data; W a W is the distance measured by the laser rangefinder 16 on the operating side, in mm; b The distance measured by the laser distance meter 17 on the driving side, in mm.

[0083] The target arc C of the mobile platform 20 rotation is calculated by the following formula:

[0084]

[0085] Wherein, C is the target arc of the mobile platform 20; W1 is the width of the metal strip 13, in mm; W2 is the width of the metal vapor jet 14, in mm, and W2 is a known data, which can be determined by the nozzle according to the flow distribution box 24. Wherein, the range of the target arc C of the mobile platform 20 is 0 to 2π / 5.

[0086] The target movement data of the flow distribution box 24 includes the target movement direction and the target movement distance; wherein the target movement data of the flow distribution box 24 is obtained by:

[0087] First, the distance W measured by the laser rangefinder 16 on the operating side is calculated. a The distance W measured by the driving side laser rangefinder 17 b The difference n is obtained, and the moving direction and moving distance of the flow distribution box 24 are obtained according to the difference n;

[0088] The moving direction and moving distance of the flow distribution box 24 are specifically obtained by the following method:

[0089] The difference n is: n = W a -W b When n>0, the second servo motor 21 of the moving mechanism rotates forward, and the distribution box 24 moves toward the laser rangefinder 16 on the operating side. When n<0, the second servo motor 21 of the moving mechanism reverses, and the distribution box 24 moves toward the driving side laser rangefinder 17. When n=0, the second servo motor 21 of the moving mechanism does not work, and the flow distribution box 24 does not move.

[0090] The movement signal output by the control system includes a direction signal for controlling the movement direction (ie, the forward and reverse operation of the motor) and a pulse signal for controlling the movement distance.

[0091] S2, after the mobile platform returns to zero position, the angle rotation mechanism drives the mobile platform 20 to rotate according to the rotation signal, so that the horizontal width of the metal vapor deposition is consistent with the width of the metal strip 13;

[0092] S21, after the mobile platform returns to the zero position, the first servo motor 18 of the angle rotation mechanism rotates according to the target arc of the rotation signal, so that the mobile platform 20 rotates;

[0093] Specifically, the angle rotation mechanism first adjusts the mobile platform to return it to the zero position, which is the position where the angle between the mobile platform and the metal strip in the horizontal direction is 0. After that, after the first servo motor 18 of the angle rotation mechanism receives the rotation signal of the control system, the first servo motor 18 rotates precisely according to the target arc C of the rotation signal, and drives the rotating assembly 19 to rotate through the first coupling, so that the mobile platform 20 tilts;

[0094] S22, the first servo motor 18 detects the rotation arc in real time through the encoder until the arc detected by the encoder is consistent with the target arc in the rotation signal. At this time, the horizontal width of the metal vapor deposition is consistent with the width of the metal strip 13.

[0095] Specifically, after the angle rotation mechanism drives the mobile platform 20 to rotate according to the rotation signal, the first servo motor 18 of the angle rotation mechanism detects the arc of rotation in real time through the encoder, and compares it with the target arc C of the rotation signal. If the two are inconsistent, it means that there is a deviation between the two, and it is necessary to detect and continue to adjust the rotation arc in real time until the two are consistent. At this time, the horizontal width of the metal vapor deposition is consistent with the width of the metal strip 13, and the target feedback control is completed.

[0096] S3, the moving mechanism moves the flow distribution box 24 according to the moving signal, so that the edge of the metal vapor jet is aligned with the edge of the metal strip 13;

[0097] S31, the second servo motor 21 of the moving mechanism rotates according to the target moving direction and the target moving distance in the moving signal, driving the flow distribution box 24 to move;

[0098] Specifically, after the second servo motor 21 of the moving mechanism receives the moving signal output by the control system, the second servo motor 21 rotates according to the target moving direction and target moving distance in the moving signal, and drives the screw assembly through the second coupling to drive the flow distribution box 24 covering the heater 23 and the nozzle to move to the target position along the ball screw;

[0099] S32, the second servo motor 21 obtains the actual moving direction and actual moving distance of the distribution box 24 in real time through the pulse feedback signal. When the actual moving direction and the actual moving distance are consistent with the target moving direction and the target moving distance in the moving signal, the edge of the metal steam jet 14 is aligned with the edge of the metal strip 13.

[0100] Specifically, the second servo motor 21 of the moving mechanism obtains the actual moving direction and actual moving distance of the distribution box 24 in real time through the pulse feedback signal (specifically, the moving direction and moving distance of the lead screw slider 26 on the distribution box 24 are obtained according to the pulse feedback signal), and compares the obtained actual moving direction and actual moving distance with the target moving direction and target moving distance in the moving signal in the step S31. If the two sets of data are inconsistent, it means that there is a deviation in the movement of the distribution box, and real-time adjustment is required to make the actual moving direction and actual moving distance consistent with the target data; when the two sets of data are completely consistent, the edge of the metal vapor jet 14 is aligned with the edge of the metal strip 13, so that the metal vapor can be completely deposited on the metal strip 13. At this time, the second servo motor completes closed-loop control of the moving direction and moving distance through the feedback signal.

[0101] S4, the heater 23 heats the distribution box 24 and the nozzle, and the metal vapor is sprayed out from the nozzle through the distribution box 24 to form a metal vapor jet flow 14, which is deposited on the surface of the metal strip 13 to form a coating.

[0102] Specifically, after the mobile platform 20 and the distribution box 24 are moved into place, the metal vapor enters the distribution box 24 and the nozzle through the steam pipe 25, and the control system starts the heater 23 for heating, which can ensure that the temperature of the distribution box 24 and the nozzle is between 600 and 800°C. The metal vapor is ejected from the nozzle through the distribution box 24 to form a uniform metal vapor jet flow 14. When the high-temperature metal vapor (600 to 800°C) contacts the low-temperature (60 to 300°C) metal strip 13, it is all deposited on the surface of the metal strip 13 to form a consistent coating.

[0103] The metal vapor mentioned above can be a single metal vapor or a mixture of multiple metal vapors.

[0104] A vacuum coating device for adjusting the metal vapor deposition width and a control method thereof are further introduced below with reference to specific examples.

[0105] Example 1

[0106] This embodiment adopts Fig. 9 The vacuum coating device for adjusting the metal vapor deposition width shown in the figure is used to coat the surface of a metal strip, and specifically comprises the following steps:

[0107] (1) When the control system receives the distance measured by the laser rangefinders on both sides of the metal strip, the distance W from the laser rangefinder on the operating side to the edge of the metal strip is a =700mm, the distance from the laser rangefinder on the driving side to the edge of the metal strip W b=500mm, after the control system receives the distance measured by the laser rangefinders on both sides of the metal strip, it calculates the width of the metal strip W1=2000-700-500=800mm based on the distance between the two laser rangefinders W=2000mm and the metal vapor deposition width W2=1600mm, then the target arc of the mobile platform rotation C=arccos(W1 / W2)=π / 3, then the first servo motor rotates according to the target arc C=π / 3; the target movement data of the distribution box is: the difference n=700-500=200>0, then the second servo motor rotates forward, and the distribution box moves toward the laser rangefinder on the operating side |n / 2|=200 / 2=100mm. The control system outputs a rotation signal (i.e., the target arc C of the mobile platform rotation) to the angle rotation mechanism, and outputs a movement signal (the target movement direction and target movement distance of the distribution box) to the moving mechanism;

[0108] (2) After the mobile platform returns to the zero position, the first servo motor of the angle rotation mechanism receives the rotation signal from the control system and rotates precisely according to the target arc C = π / 3. The first servo motor drives the rotating assembly to rotate through the first coupling, causing the mobile platform to tilt. At the same time, the encoder of the first servo motor detects the arc of its rotation in real time, and the arc is consistent with the target arc C. At this time, the horizontal width of the metal vapor deposition is consistent with the width of the metal strip.

[0109] (3) The control system outputs a movement signal (i.e., a pulse signal and a direction signal) to control the second servo motor of the moving mechanism to rotate forward. The second servo motor drives the rolling screw to rotate through the coupling, driving the distribution box and the nozzle of the heater to move 100 mm toward the laser rangefinder on the operating side. Then, the second servo motor obtains the actual moving direction and actual moving distance of the distribution box according to the pulse feedback signal, and compares the actual moving direction and actual moving distance in the pulse feedback signal with the target moving direction and target moving distance in the received movement signal. When the two sets of data are exactly the same, the feedback control of the second servo motor is completed. At this time, the edge of the metal vapor jet is aligned with the edge of the metal strip, so that the metal vapor can be completely deposited on the metal strip.

[0110] (4) After the mobile platform and the distribution box are moved into place, the metal vapor enters the distribution box and the nozzle through the steam pipe. The control system starts the heater for heating to ensure that the temperature of the distribution box and the nozzle is between 600 and 800°C. The metal vapor passes through the distribution box and is ejected from the nozzle to form a uniform metal vapor jet flow. When the high-temperature metal vapor (600 to 800°C) contacts the low-temperature (60 to 300°C) metal strip, the metal vapor ejected from the nozzle on the distribution box is all deposited on the surface of the metal strip to form a consistent coating.

[0111] Example 2

[0112] This embodiment adopts Fig. 9 The vacuum coating device for adjusting the metal vapor deposition width shown in the figure is used to coat the surface of a metal strip, and specifically comprises the following steps:

[0113] (1) When the control system receives the distance measured by the laser rangefinders on both sides of the metal strip, the distance W from the laser rangefinder on the operating side to the edge of the metal strip is a =500mm, the distance from the laser rangefinder on the driving side to the edge of the metal strip W b =700mm, after the control system receives the distance measured by the laser rangefinders on both sides of the metal strip, it calculates the width of the metal strip W1=2000-500-700=800mm according to the distance between the two laser rangefinders W=2000mm and the metal vapor deposition width W2=1600mm, then the target arc of the mobile platform rotation C=arccos(W1 / W2)=π / 3, then the first servo motor rotates according to the target arc C=π / 3; the movement data of the distribution box is: the difference n=500-700=-200<0, then the second servo motor reverses, and the distribution box moves toward the driving side laser rangefinder |n / 2|=|-200 / 2|=100mm. The control system outputs a rotation signal (i.e., the target arc C of the mobile platform rotation) to the angle rotation mechanism, and outputs a movement signal (the target movement direction and target movement distance of the distribution box) to the movement mechanism;

[0114] (2) After the mobile platform returns to the zero position, the first servo motor of the angle rotation mechanism receives the rotation signal from the control system and rotates precisely according to the target arc C = π / 3. The first servo motor drives the rotating assembly to rotate through the first coupling, causing the mobile platform to tilt. At the same time, the encoder of the first servo motor detects the arc of its rotation in real time, and the arc is consistent with the target arc C. At this time, the horizontal width of the metal vapor deposition is consistent with the width of the metal strip.

[0115] (3) The control system outputs a movement signal (i.e., a pulse signal and a direction signal) to control the second servo motor of the moving mechanism to reverse. The second servo motor drives the rolling screw to rotate through the coupling, driving the distribution box and the nozzle of the heater to move 100 mm toward the laser rangefinder on the driving side. Then, the second servo motor obtains the actual movement direction and actual movement distance of the distribution box according to the pulse feedback signal, and compares the actual movement direction and actual movement distance in the pulse feedback signal with the target movement direction and target movement distance in the received movement signal. When the two sets of data are exactly the same, the feedback control of the second servo motor is completed. At this time, the edge of the metal vapor jet is aligned with the edge of the metal strip, so that the metal vapor can be completely deposited on the metal strip.

[0116] (4) After the mobile platform and the distribution box are moved into place, the metal vapor enters the distribution box and the nozzle through the steam pipe. The control system starts the heater for heating to ensure that the temperature of the distribution box and the nozzle is between 600 and 800°C. The metal vapor passes through the distribution box and is ejected from the nozzle to form a uniform metal vapor jet flow. When the high-temperature metal vapor (600 to 800°C) contacts the low-temperature (60 to 300°C) metal strip, the metal vapor ejected from the nozzle on the distribution box is all deposited on the surface of the metal strip to form a consistent coating.

[0117] Example 3

[0118] This embodiment adopts Fig. 9 The vacuum coating device for adjusting the metal vapor deposition width shown in the figure is used to coat the surface of a metal strip, and specifically comprises the following steps:

[0119] (1) When the control system receives the distance measured by the laser rangefinders on both sides of the metal strip, the distance W from the laser rangefinder on the operating side to the edge of the metal strip is a = 200mm, the distance from the laser rangefinder on the driving side to the edge of the metal strip W b =200mm, after the control system receives the distance measured by the laser rangefinders on both sides of the metal strip, it calculates the width of the metal strip W1=2000-200-200=1600mm based on the distance between the two laser rangefinders W=2000mm and the metal vapor deposition width W2=1600mm, then the target arc of rotation of the mobile platform C=arccos(W1 / W2)=0, then the first servo motor does not work, and the mobile platform does not rotate;; The target movement data of the distribution box is: the difference n=200-200=0, then the second servo motor does not work, and the distribution box does not move. The control system outputs a rotation signal (i.e., the target arc of rotation of the mobile platform C) to the angle rotation mechanism, and outputs a movement signal (moving direction and moving distance of the distribution box) to the moving mechanism;

[0120] (2) After the moving platform returns to the zero position, since the target arc C=0, the first servo motor does not work and the moving platform does not rotate. At this time, the horizontal width of the metal vapor deposition is consistent with the width of the metal strip.

[0121] (3) Since the difference n between the distances measured by the two laser rangefinders is 0, the second servo motor does not work, the flow distribution box and the nozzle do not move, and the edge of the metal vapor jet is aligned with the edge of the metal strip, so that the metal vapor can be completely deposited on the metal strip.

[0122] (4) After the mobile platform and the distribution box are moved into place, the metal vapor enters the distribution box and the nozzle through the steam pipe. The control system starts the heater for heating to ensure that the temperature of the distribution box and the nozzle is between 600 and 800°C. The metal vapor passes through the distribution box and is ejected from the nozzle to form a uniform metal vapor jet flow. When the high-temperature metal vapor (600 to 800°C) contacts the low-temperature (60 to 300°C) metal strip, the metal vapor ejected from the nozzle on the distribution box is all deposited on the surface of the metal strip to form a consistent coating.

[0123] In summary, the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A vacuum coating device for adjusting the width of metal vapor deposition, characterized in that: It includes a base, a rotating mobile platform, a flow distribution box, a heater, a laser rangefinder and a control system; The rotating mobile platform includes an angle rotating mechanism disposed on the base, a mobile platform connected to the angle rotating mechanism, and a mobile mechanism disposed on the mobile platform; the angle rotating mechanism is used to rotate the mobile platform; the mobile mechanism is used to adjust the position of the distribution box on the mobile platform; The flow distribution box is arranged on the moving platform through the moving mechanism, and a nozzle is arranged on the flow distribution box. Metal vapor passes through the flow distribution box and is ejected from the nozzle to form a metal vapor jet flow, and is deposited on the surface of the metal strip to form a coating. The heater is coated on the flow distribution box and the nozzle to heat the flow distribution box and the nozzle; The laser rangefinder is disposed on both sides of the metal strip to measure the distance between the laser rangefinder and the metal strip; The control system receives the distance signal measured by the laser rangefinder, controls the angle rotation mechanism to drive the mobile platform to rotate, so that the horizontal width of the metal vapor deposition is consistent with the width of the metal strip, and adjusts the position of the flow distribution box through the mobile mechanism to align the edge of the metal vapor jet with the edge of the metal strip.

2. The vacuum coating device for adjusting the metal vapor deposition width according to claim 1, characterized in that: The angle rotation mechanism includes a rotating seat, a first servo motor arranged on the rotating seat, a first coupling connected to the output shaft of the first servo motor, and a rotating assembly connected to the first coupling; the first servo motor drives the mobile platform to rotate through the first coupling and the rotating assembly, so that the horizontal width of the metal vapor deposition is consistent with the width of the metal strip.

3. The vacuum coating device for adjusting the metal vapor deposition width according to claim 2, characterized in that: The rotating assembly includes a driving gear connected to the first coupling and a rotating gear meshed with the driving gear, the driving gear is arranged on the rotating seat, and the rotating gear is fixedly connected to the moving platform.

4. The vacuum coating device for adjusting the metal vapor deposition width according to claim 1, characterized in that: The moving mechanism includes a second servo motor arranged on the moving platform, a second coupling connected to the output end of the second servo motor, and a screw assembly connected to the coupling; the screw assembly includes a ball screw connected to the second coupling and a screw slider arranged on the ball screw, the ball screw is fixed on the moving platform, and the screw slider is fixedly connected to the distribution box.

5. The vacuum coating device for adjusting the metal vapor deposition width according to claim 4, characterized in that: A heat insulating layer is provided between the heater and the screw slider.

6. A control method for a vacuum coating device for adjusting the width of metal vapor deposition as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1, the control system receives the distance measured by the laser rangefinder on both sides of the metal strip, obtains the target arc of rotation of the mobile platform and the target movement data of the distribution box, and outputs the rotation signal and the movement signal; S2, after the angle rotation mechanism adjusts the movable platform to zero position, the movable platform is driven to rotate according to the rotation signal so that the horizontal width of the metal vapor deposition is consistent with the width of the metal strip; S3, the moving mechanism moves the flow distribution box according to the moving signal to align the edge of the metal vapor jet flow with the edge of the metal strip; S4, the heater heats the distribution box and the nozzle, and the metal vapor passes through the distribution box and is ejected from the nozzle to form a metal vapor jet flow, and is deposited on the surface of the metal strip to form a coating.

7. The control method of the vacuum coating device for adjusting the metal vapor deposition width according to claim 6, characterized in that: In step S1, the target arc C of the rotation of the mobile platform is: W1=WW a -W b Where C is the target arc of the mobile platform rotation; W1 is the width of the metal strip, in mm; W2 is the width of the metal vapor jet, in mm; W is the distance between the two laser rangefinders, in mm; W a The distance measured by the laser rangefinder on the operating side, in mm; W b The distance measured by the laser distance meter on the driving side, in mm.

8. The control method of the vacuum coating device for adjusting the metal vapor deposition width according to claim 7, characterized in that: The target radian C of the mobile platform rotation ranges from 0 to 2π / 5.

9. The control method of the vacuum coating device for adjusting the metal vapor deposition width according to claim 7, characterized in that: In step S1, the target movement data of the flow distribution box is obtained as follows: Calculate the distance W measured by the laser rangefinder on the operating side a Distance W measured by the laser distance meter on the driving side b and obtain the target moving direction and target moving distance of the flow distribution box according to the difference n.

10. The control method of the vacuum coating device for adjusting the metal vapor deposition width according to claim 9, characterized in that: The moving direction and moving distance of the flow distribution box are determined by the following method: The difference n is: n=W a -W b When n>0, the second servo motor of the moving mechanism rotates forward, and the distribution box moves toward the operating side laser rangefinder When n < 0, the second servo motor of the moving mechanism is reversed, and the distribution box moves toward the laser rangefinder on the driving side. When n=0, the second servo motor of the moving mechanism does not work, and the flow distribution box does not move.

11. The control method of the vacuum coating device for adjusting the metal vapor deposition width according to claim 6, characterized in that: The step S2 includes the following process: S21, the first servo motor of the angle rotation mechanism rotates according to the target arc of the rotation signal to rotate the mobile platform; S22, the first servo motor detects the actual curvature of the moving platform in real time through an encoder until the actual curvature is consistent with the target curvature. At this time, the horizontal width of the metal vapor deposition is consistent with the width of the metal strip.

12. The control method of the vacuum coating device for adjusting the metal vapor deposition width according to claim 6, characterized in that: The step S3 includes the following process: S31, the second servo motor of the moving mechanism rotates according to the target moving direction and the target moving distance in the moving signal, driving the flow distribution box to move; S32, the second servo motor obtains the actual moving direction and actual moving distance of the distribution box in real time through a pulse feedback signal. When the actual moving direction and actual moving distance are consistent with the target moving direction and target moving distance in the moving signal, the edge of the metal steam jet is aligned with the edge of the metal strip.

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