A laser-induced liquid phase deposition device for PET coating

Abstract

This invention provides a laser-induced liquid phase deposition (LAD) device for PET coating, addressing the problems of insufficient motion synchronization precision, difficulty in controlling the deposition solution, and limited functionality in existing LAD deposition technologies. The device includes a frame with a pretreatment section and a laser copper deposition section mounted on it. The laser copper deposition section includes a tank containing two horizontally arranged synchronous conveyor rails. Two sliding tables are mounted between the two synchronous conveyor rails, and a horizontal coordinate positioning worktable is fixed between the bottom surfaces of the two sliding tables. A vertical lifting adjustment mechanism is mounted on the horizontal coordinate positioning worktable, and a liquid flow constraint mechanism is mounted on the lower outer side of the vertical lifting adjustment mechanism. A multi-material liquid flow switching system is mounted in the lower middle of the vertical lifting adjustment mechanism. This device enables high-speed synchronous motion, precise fluid control, and multi-material gradient deposition in laser-induced deposition technology, meeting the demands of modern electronics manufacturing for high precision, high efficiency, and multi-functional integration.

Description

Technical Field

[0001] This invention relates to the field of PET coating technology, and in particular to a laser-induced liquid phase deposition apparatus for PET coating. Background Technology

[0002] As electronic devices become thinner and more flexible, the demand for flexible printed circuit boards is growing. However, traditional circuit manufacturing processes such as etching and screen printing are complex, polluting, and wasteful of materials. Therefore, laser-induced deposition technology, as an emerging additive manufacturing technology, has attracted widespread attention due to its simple process, environmental friendliness, and ability to manufacture fine lines.

[0003] However, existing laser-induced deposition technologies, such as the invention patent "A Line Deposition Method and Deposition Apparatus" published in CN120076192A, although capable of adding deposition solution to the sample and using laser irradiation to catalyze the redox reaction in the deposition solution and achieve line deposition, still have the following problems:

[0004] 1. In terms of motion control, precise synchronization between the deposition process and the continuous movement of the substrate cannot be achieved.

[0005] In the processing of flexible printed circuit boards, roll-to-roll film is continuously transported in the horizontal direction, while deposition liquid spraying and laser irradiation require a relatively static or precise relative motion relationship with the film surface. However, this device is only suitable for laboratory processing of static samples, has a low degree of automation, cannot meet the continuous transport processing requirements of roll-to-roll PET film, makes it difficult to form deposited lines, and cannot coordinate with various pre-processing and post-processing steps to achieve continuous production.

[0006] 2. Regarding sediment confinement, there is a lack of effective flow control mechanisms.

[0007] The flow behavior of the deposition liquid on the substrate surface directly determines the deposition morphology and quality. The technical solution of this patent adopts an open deposition and unconstrained flow method. The deposition liquid spreads and diffuses freely on the substrate surface, making it impossible to precisely control the deposition area. Especially under high-speed conditions, due to the coupling effect of multiple factors such as centrifugal force, surface tension, and inertial force, the deposition liquid is prone to uncontrollable flow, resulting in distortion of the circuit shape, blurred edges, reduced resolution, and even defects such as broken wires or short circuits, making it difficult to meet the requirements of conductive circuit manufacturing.

[0008] Although some existing technologies attempt to constrain liquid flow by processing physical barriers or hydrophilic / hydrophobic patterns on the membrane surface before deposition, these static constraint methods severely limit the process flexibility of laser-induced deposition and cannot adapt to the needs of complex paths and dynamic adjustments.

[0009] 3. In terms of functionalized deposition, it is difficult to achieve multi-material gradient deposition and precise interface control.

[0010] Modern electronic devices often require the integration of material systems with different electrical, mechanical, or functional properties on the same substrate. For example, high conductivity areas require silver-based materials, solderable areas require nickel-based materials, and flexible areas may require polymer composite materials. This circuit deposition device lacks a deposition solution switching mechanism and uses a single deposition solution or a multi-component solution with a fixed ratio. It cannot achieve precise spatial distribution and gradient transition of different materials, and the interface bonding quality between different materials is difficult to control. Problems such as excessive interface resistance, insufficient bonding strength, and mismatch of thermal expansion coefficients are prone to occur, affecting the reliability and service life of the device. Summary of the Invention

[0011] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a laser-induced liquid phase deposition device for PET coating, which solves the problems of insufficient motion synchronization accuracy, difficulty in controlling the deposition liquid, single function, and low process synergy in the existing laser-induced deposition technology.

[0012] To achieve the above and other related objectives, the present invention provides a laser-induced liquid phase deposition apparatus for PET coating, comprising:

[0013] A rack is provided, on which a pre-processing section and a laser copper plating section are mounted, with the laser copper plating section located on the right side of the pre-processing section and the pre-processing section and the laser copper plating section being interconnected.

[0014] The pretreatment section is used for cleaning, degreasing, surface roughening, activation and reduction of PET film before laser-induced copper plating;

[0015] The laser copper deposition section is used to perform laser-induced liquid phase deposition on the surface of PET film;

[0016] The laser copper plating section includes a tank. Auxiliary conveying rollers are provided on the inner sides of the left and right ends of the tank. Two synchronous conveying guides are horizontally arranged inside the tank. Two sliding tables are slidably mounted between the two synchronous conveying guides. A horizontal coordinate positioning worktable is fixed between the bottom surfaces of the two sliding tables. A vertical lifting adjustment mechanism is installed on the horizontal coordinate positioning worktable. A liquid flow constraint mechanism is installed on the lower outer side of the vertical lifting adjustment mechanism. A multi-material liquid flow switching system is installed in the lower middle of the vertical lifting adjustment mechanism.

[0017] The synchronous conveying guide rail cooperates with the slide table to keep the sliding translation of the horizontal coordinate positioning worktable synchronized with the continuous output movement of the film cloth of the PET coating horizontal processing line, so as to facilitate the deposition of specific conductive paths on the continuously output film cloth by the horizontal coordinate positioning worktable.

[0018] The horizontal coordinate positioning stage is used to control the horizontal movement path of the deposition liquid spray and laser irradiation to deposit specific conductive paths on the PET film surface.

[0019] The vertical lifting adjustment mechanism is used to control the vertical height of the deposition liquid spray and laser irradiation;

[0020] The liquid flow constraint mechanism is used to ensure that the deposition liquid and laser reach the PET film surface in one step during the deposition process, thereby limiting the flow range of the deposition liquid to achieve stable continuous deposition.

[0021] The multi-material liquid flow switching system is used to switch between different material deposition liquids in real time for conductive deposition, so as to perform gradient deposition with different conductivity requirements in different regions and control the interfacial bonding quality of different materials.

[0022] Optionally, the horizontal coordinate positioning worktable includes a positioning base plate, supports, rotary seats, drive motors, lead screws, rotating sleeves, limit rails, slide rails, and sliders. A positioning base plate is installed between the bottom surfaces of two slide tables. Supports are fixed to the left front corner and right front corner of the bottom surface of the positioning base plate. Four rotary seats are fixed to the bottom surface of the positioning base plate, and the four rotary seats are respectively fixed to the front and rear left and front left and right sides of the bottom surface of the positioning base plate. A drive motor is fixed to each of the two supports. A lead screw is fixed to the output end of the drive motor. A rotating sleeve is threaded onto the outer wall of the lead screw. Limit rails are fixed to the inner sides of the two rotating sleeves. Slide rails are fixed to the right and rear parts of the bottom surface of the positioning base plate. Sliders are slidably installed in the slide rails, and the bottom surfaces of the outer ends of the two limit rails are respectively fixed to the two sliders.

[0023] Optionally, the vertical lifting adjustment mechanism includes a positioning frustum, a primary driven rotary cylinder, a driven helical gear, an internal thread, a helical gear base, a driving helical gear, and a secondary driven screw. Limiting sliders are slidably installed within both limiting rails, and a positioning frustum is vertically inserted between the two limiting sliders. A primary driven rotary cylinder is rotatably installed within the lower part of the positioning frustum. A driven helical gear is fixedly sleeved on the lower outer wall of the primary driven rotary cylinder. An internal thread is formed on the inner wall of the primary driven rotary cylinder. A helical gear base is fixed to the bottom surface of the positioning frustum. A driving helical gear is rotatably installed within the helical gear base, and the driving helical gear and the driven helical gear are meshed together. A secondary driven screw is threaded onto the internal thread.

[0024] Optionally, the vertical lifting adjustment mechanism further includes a positioning plate, a transmission annular groove, and a linkage fixing frame. The lower end of the secondary driven screw is fixed with a positioning plate, the positioning plate has a transmission annular groove in the middle, and the upper wall of the positioning plate is fixed with two linkage fixing frames, which are arranged between the inner and outer sides of the transmission annular groove.

[0025] Optionally, the fluid flow constraint mechanism includes a transfer ring, a driving spur gear, a driven ring gear, a lifting pressure plate, a pressure rail, a pressure block, a fixing block, and a scissor-type connecting rod. A transfer ring is rotatably mounted inside the positioning disk. A driving spur gear is rotatably mounted on the right side of the upper wall of the positioning disk. A driven ring gear is fixed to the upper wall of the transfer ring. The middle part of the driven ring gear is rotatably engaged in the transmission ring groove, and the driven ring gear meshes with the driving spur gear. The left and right sides of the bottom surface of the transfer ring... Each part is equipped with a pair of lifting pressure plates, and the upper lifting pressure plate is fixed to the bottom surface of the transfer ring. Each pair of lifting pressure plates has three pairs of pressure rails arranged vertically on its inner side. Each pressure rail has a pressure block slidably installed on it. Each pair of lifting pressure plates has three pairs of fixing blocks arranged vertically on its inner side. The fixing blocks are located on the side of the lifting pressure plate away from the pressure rails. Scissor-type connecting rods are rotatably installed between the front and rear walls of the two pressure blocks and the two fixing blocks on the same vertical plane.

[0026] Optionally, the fluid flow constraint mechanism further includes a mounting frame, a telescopic cylinder, a key-type limiting ring, a limiting pin, a drive rod, a parallel four-bar linkage assembly, and a constraint plate. The bottom surfaces of the two lower lifting pressure plates are each fixed with a mounting frame. A telescopic cylinder is fixed to the upper part of the mounting frame. A key-type limiting ring is fixed to the output end of the telescopic cylinder. A limiting pin is slidably installed inside the key-type limiting ring. Drive rods are rotatably installed in the lower inner side of the mounting frame, both forward and backward. Parallel four-bar linkage assemblies are rotatably installed in the upper inner side of the mounting frame, both forward and backward. The upper ends of the two left drive rods and the upper middle corners of the two sets of parallel four-bar linkage assemblies are rotatably penetrated by the left limiting pin. The upper ends of the two right drive rods and the upper middle corners of the two sets of parallel four-bar linkage assemblies are rotatably penetrated by the right limiting pin. Constraint plates are fixed to the outer walls of the outer rods of the two sets of parallel four-bar linkage assemblies on the left and the two sets of parallel four-bar linkage assemblies on the right.

[0027] Optionally, the flat key type limiting ring is in the shape of a vertically placed A-type flat key, and the parallel four-bar linkage consists of two short side linkages of equal length and two long side linkages of equal length. The length of the long side linkage is twice that of the short side linkage. The two short side linkages are connected to the middle of the two long side linkages respectively through a rotating joint to form a movable parallelogram frame. A buffer layer made of porous foamed silicone rubber is provided at the bottom of the constraint plate.

[0028] Optionally, the multi-material fluid switching system includes a central cylinder, infusion pipes, branch pipes, face gear mounting seats, an active single-slot face gear, a driven four-slot face gear, a fluid switching disk, a drive pin, a connecting pipe groove, a fluid nozzle, and a laser head. The central cylinder is rotatably engaged with the inner wall of the transfer ring. Infusion pipes are installed on both the left and right sides of the central cylinder, and these infusion pipes pass through the positioning disk. Four branch pipes are fixed equidistantly within the infusion pipes. Face gear mounting seats are fixed on both the left and right sides of the bottom surface of the central cylinder. An active single-slot face gear is rotatably mounted within each of the two face gear mounting seats. The lower end of the infusion pipe rotates... A fluid flow switching disk is connected to the moving part. A driven four-slot gear is fixedly sleeved on the outer wall of the fluid flow switching disk. The inner sides of the four slots of the driven four-slot gear and the inner sides of the slot of the driving single-slot gear are all fixed with driving pins. One driving pin of the driving single-slot gear and the four driving pins of the driven four-slot gear intermittently abut and transmit power. The driving single-slot gear and the driven four-slot gear intermittently mesh and transmit power. A connecting pipe groove is provided in the fluid flow switching disk, and the connecting pipe groove is intermittently connected to four branch pipes. A fluid flow nozzle is rotatably connected to the lower part of the fluid flow switching disk. A laser head is installed in the middle of the bottom surface of the central cylinder.

[0029] Optionally, all four branch pipes are connected to the sedimentation liquid supply system of the tank, and copper-based solution, silver-based solution, alloy composite solution and cleaning liquid flow in the four branch pipes respectively. Rotation drive motors are installed at the input ends of the active helical gear, active spur gear and active single slot surface gear.

[0030] Optionally, the angle between adjacent slots of the driven four-slot gear is 90 degrees, and the number of teeth in each of the four segments of the driven four-slot gear is the same as the number of teeth in the driving single-slot gear.

[0031] As described above, the laser-induced liquid phase deposition apparatus for PET coating of the present invention has at least the following beneficial effects:

[0032] 1. By cooperating with the synchronous conveyor rail and the slide table, the deposition process and the continuous movement of the substrate are precisely synchronized, matching the continuous conveying and processing requirements of roll-to-roll PET film, so that the processing and shaping of the deposition line can work together with various pre-processing and post-processing steps to achieve continuous production and a high degree of automation.

[0033] 2. By using a horizontal coordinate positioning worktable and a vertical lifting adjustment mechanism, the horizontal movement path and vertical height of the deposition liquid spray and laser irradiation can be controlled, driving the deposition head to achieve a complex path movement synchronized with the membrane cloth, maintaining the optimal relative position between the deposition head and the membrane cloth surface, and performing stable deposition of specific conductive paths on the PET membrane cloth surface.

[0034] 3. By setting up a liquid flow constraint mechanism, during the deposition process, the deposition liquid and laser reach the PET film surface in one step, restricting the flow range of the deposition liquid to achieve stable continuous deposition. This solves the problem of liquid turbulence under high-speed movement and achieves precise control of the flow range of the deposition liquid. This results in the deposition of conductive lines with complete shape, clear edges, high line width accuracy, and good quality, meeting the requirements of high-precision circuit manufacturing. Furthermore, the line constraint direction and pressure of this constraint mechanism can be adjusted in real time to match the needs of complex paths and dynamic processing, which is conducive to the flexible application of laser-induced deposition and facilitates the development of laser-induced deposition technology.

[0035] 4. By setting up a multi-material liquid flow switching system, different materials can be switched in real time for conductive deposition, so as to carry out gradient deposition for different regions with different conductivity requirements, and control the interface bonding quality of different materials, so that the bonding strength of different materials is high, the interface resistance is low, and the thermal expansion coefficients are matched. Attached Figure Description

[0036] Figure 1 The diagram shown is a three-dimensional schematic diagram of the overall structure of the present invention from a southwest perspective.

[0037] Figure 2 The image shown is a southwest-view perspective perspective of the structure of the pre-processing section and the laser copper plating section of this invention.

[0038] Figure 3 The image shown is a southwest-view perspective perspective of the laser-copper plating section structure of the present invention.

[0039] Figure 4 The image shown is a southwest-view perspective of the horizontal coordinate positioning worktable of the present invention in its flipped-over state.

[0040] Figure 5 The diagram shown is a front view of the horizontal coordinate positioning worktable structure of the present invention.

[0041] Figure 6 The image shown is a perspective view of the horizontal coordinate positioning workbench structure of the present invention from a northwest-facing upward angle.

[0042] Figure 7 The diagram shown is a front view of the combined structure of the vertical lifting adjustment mechanism, the fluid flow constraint mechanism, and the multi-material fluid flow switching system of the present invention.

[0043] Figure 8 The image shown is a northwest perspective view of the vertical lifting adjustment mechanism of the present invention in its flipped-over state.

[0044] Figure 9 The image shown is a northwest-southeast perspective view of the vertical lifting adjustment mechanism of the present invention in its flipped-over state.

[0045] Figure 10This is a southwest perspective perspective view showing the engagement structure of the primary driven rotating cylinder and the driven helical gear in the flipped-over state of the present invention.

[0046] Figure 11 Shown is a southwest perspective perspective view of the fluid flow constraint mechanism of the present invention.

[0047] Figure 12 The diagram shown is a front view of the constraint plate transmission mechanism of the present invention.

[0048] Figure 13 The image shown is a northwest-view perspective of the multi-material fluid switching system of the present invention.

[0049] Figure 14 The image shown is a southwest-view perspective perspective of the fluid flow switching disk transmission structure of the present invention.

[0050] Figure 15 The image shown is a southwest-view perspective perspective of the tributary pipe and fluid switching disk cooperation structure of the present invention.

[0051] Figure 16 The image shown is a perspective view from the southeast of the positioning disc transmission structure in the flipped-over state of this invention.

[0052] Figure 17 The image shown is a front cross-sectional view of the center of the positioning disk of the present invention.

[0053] Figure 18 This invention is shown as Figure 6 An enlarged schematic diagram of the structure of region A.

[0054] Component designation explanation

[0055] 1. Rack;

[0056] 2. Pre-processing section;

[0057] 3. Laser copper plating section; 301. Tank; 302. Auxiliary conveyor roller; 303. Synchronous conveyor rail; 304. Slide table;

[0058] 4. Horizontal coordinate positioning worktable; 401. Positioning base plate; 402. Support; 403. Rotary base; 404. Drive motor; 405. Lead screw; 406. Rotating sleeve; 407. Limit rail; 408. Slide rail; 409. Slider;

[0059] 5. Vertical lifting adjustment mechanism; 501. Positioning frustum base; 502. First-stage driven rotary drum; 503. Driven helical gear; 504. Internal thread; 505. Helical gear base; 506. Driving helical gear; 507. Second-stage driven screw; 508. Positioning disc; 509. Transmission annular groove; 510. Linkage fixing frame;

[0060] 6. Fluid flow constraint mechanism; 601. Transfer ring; 602. Driving spur gear; 603. Driven ring gear; 604. Lifting pressure plate; 605. Pressure rail; 606. Pressure block; 607. Fixing block; 608. Scissor linkage; 609. Mounting bracket; 610. Telescopic cylinder; 611. Key-type limit ring; 612. Limit pin; 613. Drive rod; 614. Parallel four-bar linkage assembly; 615. Constraint plate;

[0061] 7. Multi-material fluid switching system; 701. Central cylinder; 702. Infusion pipe; 703. Branch pipe; 704. Face gear mounting base; 705. Active single-slot face gear; 706. Driven four-slot face gear; 707. Fluid switching disc; 708. Drive pin; 709. Connecting pipe groove; 710. Fluid nozzle; 711. Laser head. Detailed Implementation

[0062] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0063] As described in the background section, existing laser-induced deposition technologies, such as the invention patent "A Line Deposition Method and Deposition Apparatus" published in CN120076192A, although capable of adding deposition solution to the sample and using laser irradiation to catalyze the redox reaction in the deposition solution and achieve line deposition, still have the following problems: 1. In terms of motion control, it is impossible to achieve precise synchronization between the deposition process and the continuous movement of the substrate: In the processing of flexible printed circuit boards, since the roll-to-roll film is continuously transported in the horizontal direction, the deposition solution spraying and laser irradiation need to maintain relative static distance from the film surface. 1. The device lacks precise relative motion relationships and is only suitable for laboratory processing of static samples. It has low automation and cannot meet the continuous conveying requirements of roll-to-roll PET film processing, making it difficult to form deposition lines. Furthermore, it cannot coordinate with various pre- and post-processing steps to achieve continuous production. 2. Regarding deposition liquid constraint, there is a lack of effective flow control mechanisms: the flow behavior of the deposition liquid on the substrate surface directly determines the deposition morphology and quality. The patented technical solution uses open deposition and unconstrained flow, allowing the deposition liquid to spread and diffuse freely on the substrate surface, making it impossible to precisely control the deposition area, especially at high speeds. Under motion conditions, due to the coupling effect of multiple factors such as centrifugal force, surface tension, and inertial force, the deposition liquid is prone to uncontrollable flow, causing distortion of circuit shape, blurred edges, reduced resolution, and even defects such as broken wires or short circuits, making it difficult to meet the requirements of conductive circuit manufacturing. Although some existing technologies have attempted to constrain the liquid flow by processing physical barriers or hydrophilic / hydrophobic patterns on the film surface before deposition, these static constraint methods severely limit the process flexibility of laser-induced deposition and cannot adapt to the needs of complex paths and dynamic adjustments. 3. In terms of functionalized deposition, it is difficult to achieve multi-material gradient deposition and precise interface control. Modern electronic devices often require the integration of material systems with different electrical, mechanical, or functional properties on the same substrate. For example, high conductivity areas require silver-based materials, solderable areas require nickel-based materials, and flexible areas may require polymer composite materials. This circuit deposition device lacks a deposition solution switching mechanism and uses a single deposition solution or a multi-component solution with a fixed ratio. It cannot achieve precise spatial distribution and gradient transition of different materials, and the interface bonding quality between different materials is difficult to control. Problems such as excessive interface resistance, insufficient bonding strength, and mismatch of thermal expansion coefficients are prone to occur, affecting the reliability and service life of the device. Example 1

[0064] Please see Figures 1-10To address the limitations of existing motion control technologies, which only allow for static processing and cannot achieve precise synchronization between the deposition process and the continuous movement of the substrate, making it difficult to form deposited lines and coordinate with various pre- and post-processing steps for continuous production, this invention provides a laser-induced liquid phase deposition (LAD) device for PET film coating. The device includes a frame 1, on which a pre-processing section 2 and a laser copper deposition section 3 are mounted. The laser copper deposition section 3 is located on the right side of the pre-processing section 2, and the two sections are interconnected. The pre-processing section 2 performs cleaning, degreasing, surface roughening, activation, and reduction on the PET film before laser-induced copper deposition. The laser copper deposition section 3 performs laser-induced liquid phase deposition on the surface of the PET film.

[0065] More comprehensively, such as Figure 3 As shown, the laser copper deposition section 3 includes a tank 301. Auxiliary conveying rollers 302 are installed on the inner sides of both the left and right ends of the tank 301. Two synchronous conveying guide rails 303 are horizontally arranged inside the tank 301. Two sliding tables 304 are slidably mounted between the two synchronous conveying guide rails 303. A horizontal coordinate positioning worktable 4 is fixed between the bottom surfaces of the two sliding tables 304. The sliding of the sliding tables 304 on the synchronous conveying guide rails 303 drives the horizontal coordinate positioning worktable 4 in conjunction. The sliding speed of the sliding tables 304 on the synchronous conveying guide rails 303 matches the continuous conveying speed of the PET film and the processing rhythm of pretreatment and posttreatment, enabling continuous pretreatment, deposition, and posttreatment of the PET film. The processing meets the needs of continuous and efficient processing in modern electronic manufacturing. The horizontal coordinate positioning worktable 4 is equipped with a vertical lifting adjustment mechanism 5. The synchronous transmission guide rail 303 cooperates with the slide table 304 to keep the sliding translation of the horizontal coordinate positioning worktable 4 synchronized with the continuous output movement of the film cloth of the PET film coating horizontal processing line. This facilitates the deposition of specific conductive paths on the continuously output film cloth by the horizontal coordinate positioning worktable 4. The horizontal coordinate positioning worktable 4 can control the horizontal movement path of the deposition liquid spray and laser irradiation to deposit specific conductive paths on the surface of the PET film cloth. The vertical lifting adjustment mechanism 5 can control the vertical height of the deposition liquid spray and laser irradiation.

[0066] More comprehensively, such as Figures 3-6As shown, the horizontal coordinate positioning worktable 4 includes a positioning base plate 401, a support 402, a rotary table 403, a drive motor 404, a lead screw 405, a rotating sleeve 406, a limit rail 407, a slide rail 408, and a slider 409. The positioning base plate 401 is mounted between the bottom surfaces of two slide tables 304. Supports 402 are fixed to the left and right front corners of the bottom surface of the positioning base plate 401. Four rotary tables 403 are fixed to the bottom surface of the positioning base plate 401, respectively at the front-to-back left and front-to-left left and right sides of the bottom surface of the positioning base plate 401. A drive motor 404 is fixed to each of the two supports 402, and a lead screw 405 is fixed to the output end of the drive motor 404. A screw 405 has a rotating sleeve 406 threaded on its outer wall. A drive motor 404 can drive the rotating sleeve 406 to move through the screw 405. Limit rails 407 are fixed to the inner sides of both rotating sleeves 406. Slide rails 408 are fixed to the right and rear parts of the bottom surface of the positioning base plate 401. Slider 409 is slidably installed in the slide rails 408. The bottom surfaces of the outer ends of the two limit rails 407 are fixed to the two sliders 409 respectively. The rotating sleeve 406 can drive the limit rails 407 to move precisely under the guidance of the slide rails 408. The fulcrum of the connection point of the two rotating sleeves 406 and the sliding point of the two sliders 409 form a stable planar motion mechanism.

[0067] More comprehensively, such as Figures 4-5 and Figures 7-10 As shown, the vertical lifting adjustment mechanism 5 includes a positioning frustum 501, a primary driven rotary cylinder 502, a driven helical gear 503, an internal thread 504, a helical gear base 505, a driving helical gear 506, and a secondary driven screw 507. Limiting sliders are slidably installed within both limiting rails 407. The positioning frustum 501 is vertically inserted between the two limiting sliders. The primary driven rotary cylinder 502 is rotatably mounted within the lower part of the positioning frustum 501. The driven helical gear 503 is fixedly sleeved on the lower outer wall of the primary driven rotary cylinder 502. An internal thread is formed on the inner wall of the primary driven rotary cylinder 502. 504. A helical gear base 505 is fixed to the bottom surface of the positioning frustum 501. A driving helical gear 506 is rotatably installed inside the helical gear base 505, and the driving helical gear 506 and the driven helical gear 503 are meshed and connected. A secondary driven screw 507 is threaded on the internal thread 504. A rotation drive motor is installed at the input end of the driving helical gear 506. By driving the driving helical gear 506 to mesh with the driven helical gear 503, the primary driven drum 502 is rotated, thereby causing the internal thread 504 to drive the secondary driven screw 507 to spiral up and down, which can control the height of the deposition head.

[0068] More comprehensively, such as Figures 8-9As shown, the vertical lifting adjustment mechanism 5 also includes a positioning plate 508, a transmission annular groove 509, and a linkage fixing frame 510. The lower end of the secondary driven screw 507 is fixed with the positioning plate 508. The lifting of the secondary driven screw 507 can drive the positioning plate 508 to lift. The positioning plate 508 has a transmission annular groove 509 in the middle. Two linkage fixing frames 510 are fixed on the upper wall of the positioning plate 508. The linkage fixing frames 510 are located between the inner and outer sides of the transmission annular groove 509. The linkage fixing frames 510 allow the positioning plate 508 to be lifted as a whole without affecting the rotation of the internal components of the transmission annular groove 509.

[0069] Specifically, when the PET film is continuously conveyed horizontally, the slide table 304 slides on the synchronous conveying guide rail 303, driving the horizontal coordinate positioning worktable 4 in conjunction. The sliding speed of the slide table 304 on the synchronous conveying guide rail 303 matches the continuous conveying speed of the PET film, and is coordinated with the pre-processing and post-processing rhythms. The horizontal coordinate positioning worktable 4 remains relatively stationary with the surface of the PET film. At this time, the drive motor 404 drives the rotating sleeve 406 to move through the lead screw 405, which can drive the limiting rail 407 to move precisely under the guidance of the slide rail 408. The horizontal coordinate positioning worktable 4 forms a stable planar motion mechanism through the fulcrum of the connection point of the two rotating sleeves 406 and the sliding point of the two sliders 409. At the intersection of the two limiting rails 407, line drawing motion can be performed in any direction on the horizontal plane. This process deposits conductive lines onto the PET film, driving the deposition head to move along a complex path synchronously with the film. If the vertical distance between the deposition head and the PET film is unsuitable during deposition, the driving helical gear 506 meshes with the driven helical gear 503, causing the primary driven drum 502 to rotate. This, in turn, drives the internal thread 504 to raise and lower the secondary driven screw 507, precisely controlling the deposition head height. Throughout the deposition process, the deposition head maintains the optimal relative position to the film surface, ensuring accurate synchronization between the deposition process and the continuous movement of the substrate. This matches the continuous conveying requirements of roll-to-roll PET film, enabling the deposition process to coordinate with various pre- and post-processing steps, achieving continuous production with a high degree of automation. Example 2

[0070] Please see Figures 4-5 , Figure 7 , Figures 11-12 and Figures 16-18To address the problem that existing technologies lack effective flow control mechanisms for confining the deposition liquid, which easily leads to uncontrollable flow of the deposition liquid, causing distortion of the circuit shape, blurred edges, reduced resolution, and even defects such as broken wires or short circuits, making it difficult to meet the requirements for manufacturing conductive circuits, this invention provides a laser-induced liquid phase deposition device for PET coating, which also includes: a liquid flow constraint mechanism 6. The liquid flow constraint mechanism 6 is installed on the lower outer side of the vertical lifting adjustment mechanism 5. During the deposition process, the liquid flow constraint mechanism 6 allows the deposition liquid and laser to reach the PET film surface in one step, restricting the flow range of the deposition liquid to achieve stable continuous deposition.

[0071] More comprehensively, such as Figures 11-12 and Figures 16-18 As shown, the fluid flow constraint mechanism 6 includes a transfer ring 601, a driving spur gear 602, a driven ring gear 603, a lifting pressure plate 604, a pressure rail 605, a pressure block 606, a fixing block 607, and a scissor-type connecting rod 608. The transfer ring 601 is rotatably mounted inside the positioning disk 508. The driving spur gear 602 is rotatably mounted on the right side of the upper wall of the positioning disk 508. A rotation drive motor is installed at the input end of the driving spur gear 602. The driven ring gear 603 is fixed to the upper wall of the transfer ring 601. The middle part of the driven ring gear 603 is rotatably engaged in the transmission ring groove 509, and the driven ring gear 603 meshes with the driving spur gear 602. When the driving spur gear 602 rotates and meshes with the driven ring gear 603, it can drive the transfer ring 601 to rotate. The bottom surface of the transfer ring 601... A pair of lifting pressure plates 604 are provided on the left and right sides, and the upper lifting pressure plate 604 is fixed to the bottom surface of the central ring 601. Three pairs of pressure rails 605 are provided on the inner side of each pair of lifting pressure plates 604 in a vertically corresponding manner. Pressure blocks 606 are slidably installed on each pressure rail 605. Three pairs of fixing blocks 607 are provided on the inner side of each pair of lifting pressure plates 604 in a vertically corresponding manner. The fixing blocks 607 are located on the side of the lifting pressure plate 604 away from the pressure rails 605. Scissor-type connecting rods 608 are rotatably installed between the front wall and the rear wall of the two pressure blocks 606 and the two fixing blocks 607 on the same vertical plane. Driving the pressure blocks 606 to slide on the pressure rails 605 can control the rotation and folding angle of the scissor-type connecting rods 608, thereby adjusting the distance between the upper and lower lifting pressure plates 604.

[0072] More comprehensively, such as Figures 11-12 and Figures 16-18As shown, the fluid confinement mechanism 6 also includes a mounting frame 609, a telescopic cylinder 610, a keyed limiting ring 611, a limiting pin 612, a drive rod 613, a parallel four-bar linkage 614, and a constraint plate 615. The bottom surfaces of the two lower lifting pressure plates 604 are each fixed with a mounting frame 609. A telescopic cylinder 610 is fixed to the upper part of the mounting frame 609. A keyed limiting ring 611 is fixed to the output end of the telescopic cylinder 610. A limiting pin 612 is slidably installed inside the keyed limiting ring 611. A drive rod 613 is rotatably mounted on the lower inner side of the mounting frame 609, and a parallel four-bar linkage 614 is rotatably mounted on the upper inner side of the mounting frame 609, both forward and backward. Furthermore, the upper ends of the two left drive rods 613 and the upper middle corners of the two sets of parallel four-bar linkages 614 are rotated through by the left limiting pin 612, and the upper ends of the two right drive rods 613 and the upper middle corners of the two sets of parallel four-bar linkages 614 are rotated through by the right limiting pin 612. The outer walls of the outer rods of the two sets of parallel four-bar linkages 614 on the left and the outer walls of the outer rods of the two sets of parallel four-bar linkages 614 on the right are all fixed with constraint plates 615. When the output end of the telescopic cylinder 610 is activated, it slides out and pushes the limiting pin 612 to move inward synchronously, so that the drive rods 613 and the parallel four-bar linkages 614 are linked to fold open and push the two constraint plates 615 to form a trumpet shape.

[0073] More comprehensively, such as Figures 11-12 and Figures 16-18 As shown, the key-type limiting ring 611 is in the shape of a vertically placed A-type key, which allows the limiting pin 612 to be slidably limited within the key-type limiting ring 611, preventing the limiting pin 612 from failing to move. The parallel four-bar linkage 614 consists of two short-side linkages of equal length and two long-side linkages of equal length. The length of the long-side linkage is twice that of the short-side linkage. The two short-side linkages are connected to the middle of the two long-side linkages respectively through a rotating joint, forming a movable parallelogram frame. The expansion and contraction deformation of the parallel four-bar linkage 614 can control the tilt angle and position of the constraint plate 615 to adapt to the needs of different line deposition. A buffer layer made of porous foamed silicone rubber is provided at the bottom of the constraint plate 615. The porous foamed silicone rubber buffer layer can ensure soft contact with the membrane surface of the constraint plate 615 and prevent damage to the membrane.

[0074] Specifically, before deposition begins, the driving spur gear 602 is first activated to rotate and mesh with the driven ring gear 603, driving the intermediate ring 601 to rotate. This causes the two constraint plates 615 to rotate to the target angle of the deposition path. Then, the output end of the telescopic cylinder 610 slides out, pushing the limit pin 612 to move inward synchronously. This causes the drive rod 613 and the parallel four-bar linkage 614 to fold open in conjunction, pushing the two constraint plates 615 to form a trumpet shape. Then, the pressure block 606 slides on the pressure rail 605, controlling the rotation and folding angle of the scissor linkage 608, thereby adjusting the distance between the upper and lower lifting pressure plates 604. This causes the mounting frame 609 to lift and lower the entire transmission component of the constraint plates 615, pressurizing the constraint plates 615. The porous foamed silicone rubber buffer layer at the bottom of the constraint plates 615 ensures soft contact and compression with the membrane surface, facilitating deposition. The deposition head forms a closed deposition area, and the subsequent deposition head injects the deposition liquid into this area. Two constraint plates 615 prevent liquid turbulence and ensure deposition accuracy. After deposition, the mounting frame 609 is raised by sliding and folding the compression scissor linkage 608, causing the constraint plates 615 to lift off the membrane surface. Then, the telescopic cylinder 610 is activated to retract and fold the constraint plates 615, waiting for the next deposition cycle. This solves the problem of liquid turbulence under high-speed movement and achieves precise control of the deposition liquid flow range. This results in a complete shape of deposited conductive lines with clear edges, high linewidth accuracy, and good quality, meeting the requirements of high-precision circuit manufacturing. Furthermore, the constraint direction and pressure of the constraint mechanism can be adjusted in real time to match the needs of complex paths and dynamic processing, which is conducive to the flexible application of laser-induced deposition and facilitates the development of laser-induced deposition technology. Example 3

[0075] Please see Figures 4-5 , Figure 7 and Figures 13-18 To address the shortcomings of existing technologies in functional deposition, which lack a deposition solution switching mechanism and rely on a single deposition solution or a multi-component solution with a fixed ratio, making it impossible to achieve precise spatial distribution and gradient transition of different materials, the present invention provides a laser-induced liquid phase deposition device for PET coating. This device includes a multi-material liquid flow switching system 7, installed in the lower middle part of a vertical lifting adjustment mechanism 5. The multi-material liquid flow switching system 7 can switch between different material deposition solutions in real time for conductive deposition, enabling gradient deposition of different conductive properties in different areas and controlling the interfacial bonding quality of different materials.

[0076] More comprehensively, such as Figures 13-17As shown, the multi-material fluid switching system 7 includes a central cylinder 701, a delivery pipe 702, a branch pipe 703, a face gear mounting base 704, an active single-slot face gear 705, a driven four-slot face gear 706, a fluid switching disk 707, a drive pin 708, a connecting pipe groove 709, a fluid nozzle 710, and a laser head 711. The central cylinder 701 is rotatably engaged with the inner wall of the transfer ring 601. Delivery pipes 702 are installed on both the left and right sides of the central cylinder 701, and the delivery pipes 702 pass through the positioning disk 508. Four equidistant needles are fixed inside the delivery pipes 702. Each branch pipe 703 has a face gear mounting seat 704 fixed on the left and right sides of the bottom surface of the central cylinder 701. A driving single-slot face gear 705 is rotatably mounted inside each face gear mounting seat 704. A drive motor is installed at the input end of the driving single-slot face gear 705. A flow switching disc 707 is rotatably engaged at the lower end of the infusion pipe 702. A driven four-slot face gear 706 is fixedly sleeved on the outer wall of the flow switching disc 707. Drive pins 708 are fixed to the inner sides of the four slots of the driven four-slot face gear 706 and the inner sides of the slots of the driving single-slot face gear 705. One drive pin 708 of the driving single-groove gear 705 intermittently abuts against the four drive pins 708 of the driven four-groove gear 706, causing intermittent meshing between the driving single-groove gear 705 and the driven four-groove gear 706. A connecting pipe groove 709 is provided inside the flow switching disk 707, and the connecting pipe groove 709 is intermittently connected to four branch pipes 703. A flow nozzle 710 is rotatably connected to the lower part of the flow switching disk 707, driving the driving single-groove gear 705 to rotate. Each rotation of the driving single-groove gear 705 causes two drive pins 708 to abut. The driven four-slot gear 706 is driven to rotate and mesh with the driving single-slot gear 705 by 90 degrees. The liquid flow switching disk 707 rotates with the driven four-slot gear 706, so that the connecting pipe groove 709 is aligned with the branch pipe 703 of different solutions, so that the liquid flow nozzle 710 outputs the deposition liquid of different materials. A laser head 711 is installed in the middle of the bottom surface of the central cylinder 701. The laser head 711 can irradiate the deposition liquid path with laser while the liquid flow nozzle 710 sprays the deposition liquid onto the membrane cloth. The laser energy stimulates the chemical reaction and induces the deposition liquid to complete the line deposition according to the injection path.

[0077] More comprehensively, such as Figure 15 As shown, all four branch pipes 703 are connected to the deposition solution supply system of the tank 301, and the four branch pipes 703 respectively contain copper-based solution, silver-based solution, alloy composite solution and cleaning solution. The copper-based solution can be used for deposition of main conductive lines and high current carrying areas, the silver-based solution can be used for deposition of high frequency signal lines, contact points and areas requiring low resistance, the alloy composite solution can be adjusted according to needs to increase the performance of the deposition lines, and the cleaning solution can be used for automatic cleaning of the liquid flow nozzle 710.

[0078] More comprehensively, such as Figure 14 As shown, the angle between adjacent slots of the driven four-slot gear 706 is 90 degrees. The number of teeth in each of the four segments of the driven four-slot gear 706 is the same as the number of teeth in the driving single-slot gear 705. This means that for every rotation of the driving single-slot gear 705, the two drive pins 708 abut against and push the driven four-slot gear 706 to rotate and mesh with the driving single-slot gear 705 by 90 degrees, matching the alignment and connection requirements of the connecting pipe slot 709 and the four branch pipes 703.

[0079] Specifically, when the liquid nozzle 710 sprays the deposition liquid onto the membrane surface to deposit conductive lines, if there is a need for precise spatial distribution and gradient transition of different materials, the active single-slot gear 705 can be driven to rotate. Each rotation of the active single-slot gear 705 causes the two drive pins 708 to abut and push the driven four-slot gear 706 to rotate and mesh with the active single-slot gear 705 by 90 degrees. The liquid flow switching disk 707 rotates with the driven four-slot gear 706, aligning the connecting pipe groove 709 with the branch pipes 703 of different solutions. In this way, the copper-based solution, silver-based solution, and alloy composite solution can be switched in real time, achieving precise spatial distribution and gradient transition of different materials. This allows for control of the interface bonding quality between different materials, resulting in high bonding strength, low interface resistance, and matching thermal expansion coefficients. In addition, when the liquid nozzle 710 is clogged or needs cleaning, aligning the connecting pipe groove 709 with the branch pipe 703 that connects to the cleaning liquid allows for automatic cleaning of the liquid nozzle 710.

[0080] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A laser-induced liquid phase deposition apparatus for PET coating, characterized in that, include: A rack (1) is provided, on which a pre-processing section (2) and a laser copper plating section (3) are installed, and the laser copper plating section (3) is located on the right side of the pre-processing section (2), and the pre-processing section (2) and the laser copper plating section (3) are interconnected. The pretreatment section (2) is used for cleaning, degreasing, surface roughening, activation and reduction of PET film cloth before laser-induced copper plating; The laser copper plating section (3) is used to perform laser-induced liquid phase deposition on the surface of PET film; The laser copper plating section (3) includes a tank (301). Auxiliary conveying rollers (302) are provided on the inner sides of the left and right ends of the tank (301). Two synchronous conveying guide rails (303) are horizontally arranged inside the tank (301). Two sliding tables (304) are slidably mounted between the two synchronous conveying guide rails (303). A horizontal coordinate positioning worktable (4) is fixed between the bottom surfaces of the two sliding tables (304). A vertical lifting adjustment mechanism (5) is installed on the horizontal coordinate positioning worktable (4). A liquid flow constraint mechanism (6) is installed on the lower outer side of the vertical lifting adjustment mechanism (5). A multi-material liquid flow switching system (7) is installed in the middle of the lower part of the vertical lifting adjustment mechanism (5). The synchronous conveying guide rail (303) cooperates with the slide table (304) to keep the sliding translation of the horizontal coordinate positioning worktable (4) synchronized with the continuous output movement of the film cloth of the PET coating horizontal processing line, so as to facilitate the deposition of a specific conductive path on the continuously output film cloth by the horizontal coordinate positioning worktable (4). The horizontal coordinate positioning stage (4) is used to control the horizontal movement path of the deposition liquid spray and laser irradiation, and to deposit a specific conductive path on the surface of the PET film. The vertical lifting adjustment mechanism (5) is used to control the vertical height of the deposition liquid spray and laser irradiation; The liquid flow constraint mechanism (6) is used to limit the flow range of the liquid flow during the deposition process so as to achieve stable continuous deposition. The multi-material liquid flow switching system (7) is used to switch the deposition liquid of different materials in real time for conductive deposition, so as to carry out gradient deposition of different regions with different conductivity requirements, and control the interface bonding quality of different materials.

2. The laser-induced liquid phase deposition equipment for PET coating according to claim 1, characterized in that: The horizontal coordinate positioning worktable (4) includes a positioning base plate (401), a support (402), a rotary table (403), a drive motor (404), a lead screw (405), a rotating sleeve (406), a limit rail (407), a slide rail (408), and a slider (409). The positioning base plate (401) is installed between the bottom surfaces of the two slide tables (304). The left and right front corners of the bottom surface of the positioning base plate (401) are fixed with supports (402). Four rotary tables (403) are fixed on the bottom surface of the positioning base plate (401), and the four rotary tables (403) are respectively fixed to the positioning base plate (401). On the left front and back and front left and right sides of the bottom surface, a drive motor (404) is fixed on each of the two supports (402). A lead screw (405) is fixed to the output end of the drive motor (404). A rotating sleeve (406) is threaded on the outer wall of the lead screw (405). A limit rail (407) is fixed to the inner side of each of the two rotating sleeves (406). A slide rail (408) is fixed to the right and rear of the bottom surface of the positioning base plate (401). A slider (409) is slidably installed in the slide rail (408). The bottom surface of the outer end of the two limit rails (407) is fixed to the two sliders (409) respectively.

3. The laser-induced liquid phase deposition equipment for PET coating according to claim 2, characterized in that: The vertical lifting adjustment mechanism (5) includes a positioning frustum (501), a primary driven rotary cylinder (502), a driven helical gear (503), an internal thread (504), a helical gear base (505), a driving helical gear (506), and a secondary driven screw (507). Limiting sliders are slidably installed in both limiting rails (407), and the positioning frustum (501) is vertically inserted between the two limiting sliders. A primary driven rotary cylinder (502) is rotatably installed in the lower part of the positioning frustum (501). A driven helical gear (503) is fixedly sleeved on the lower outer wall of the first-stage driven rotating drum (502). An internal thread (504) is opened on the inner wall of the first-stage driven rotating drum (502). A helical gear base (505) is fixed on the bottom surface of the positioning frustum (501). A driving helical gear (506) is rotatably installed in the helical gear base (505), and the driving helical gear (506) and the driven helical gear (503) are meshed and connected. A second-stage driven screw (507) is threaded on the internal thread (504).

4. The laser-induced liquid phase deposition equipment for PET coating according to claim 3, characterized in that: The vertical lifting adjustment mechanism (5) further includes a positioning plate (508), a transmission annular groove (509), and a linkage fixing frame (510). The lower end of the secondary driven screw (507) is fixed with the positioning plate (508). The positioning plate (508) has a transmission annular groove (509) in the middle. The upper wall of the positioning plate (508) is fixed with two linkage fixing frames (510), and the linkage fixing frames (510) are arranged between the inner and outer sides of the transmission annular groove (509).

5. The laser-induced liquid phase deposition equipment for PET coating according to claim 4, characterized in that: The fluid flow constraint mechanism (6) includes a transfer ring (601), a driving spur gear (602), a driven ring gear (603), a lifting pressure plate (604), a pressure rail (605), a pressure block (606), a fixing block (607), and a scissor-type connecting rod (608). The transfer ring (601) is rotatably installed inside the positioning disk (508). The driving spur gear (602) is rotatably installed on the right side of the upper wall of the positioning disk (508). The driven ring gear (603) is fixed on the upper wall of the transfer ring (601). The middle part of the driven ring gear (603) is rotatably engaged in the transmission ring groove (509), and the driven ring gear (603) meshes with the driving spur gear (602). 01) A pair of lifting pressure plates (604) are provided on the left and right sides of the bottom surface, and the upper lifting pressure plate (604) is fixed to the bottom surface of the transfer ring (601). Three pairs of pressure rails (605) are provided on the inner side of each pair of lifting pressure plates (604) in an up-down correspondence. Pressure blocks (606) are slidably installed on each pressure rail (605). Three pairs of fixing blocks (607) are provided on the inner side of each pair of lifting pressure plates (604) in an up-down correspondence. The fixing blocks (607) are located on the side of the lifting pressure plate (604) away from the pressure rails (605). Scissor-type connecting rods (608) are rotatably installed between the front and rear walls of the two pressure blocks (606) and the two fixing blocks (607) on the same vertical plane.

6. The laser-induced liquid phase deposition equipment for PET coating according to claim 5, characterized in that: The fluid flow constraint mechanism (6) further includes a mounting bracket (609), a telescopic cylinder (610), a key-type limiting ring (611), a limiting pin (612), a drive rod (613), a parallel four-bar linkage (614), and a constraint plate (615). The bottom surfaces of the two lower lifting pressure plates (604) are fixed with mounting brackets (609). The upper part of the mounting bracket (609) is fixed with a telescopic cylinder (610). The output end of the telescopic cylinder (610) is fixed with a key-type limiting ring (611). A limiting pin (612) is slidably installed inside the key-type limiting ring (611). The lower part of the inner side of the mounting bracket (609) is... Drive rods (613) are rotatably mounted at both the front and rear. Parallel four-bar linkages (614) are rotatably mounted at the upper part of the inner side of the mounting bracket (609). The upper ends of the two drive rods (613) on the left and the upper middle corners of the two sets of parallel four-bar linkages (614) are rotatably penetrated by the left limiting pins (612). The upper ends of the two drive rods (613) on the right and the upper middle corners of the two sets of parallel four-bar linkages (614) are rotatably penetrated by the right limiting pins (612). The outer walls of the outer rods of the two sets of parallel four-bar linkages (614) on the left and the outer walls of the outer rods of the two sets of parallel four-bar linkages (614) on the right are all fixed with constraint plates (615).

7. The laser-induced liquid phase deposition equipment for PET coating according to claim 6, characterized in that: The flat key type limiting ring (611) is in the shape of a vertically placed A-type flat key. The parallel four-bar linkage assembly (614) is composed of two short side linkages of equal length and two long side linkages of equal length. The length of the long side linkage is twice that of the short side linkage. The two short side linkages are connected to the middle of the two long side linkages respectively through a rotating joint to form a movable parallelogram frame. The bottom of the constraint plate (615) is provided with a buffer layer made of porous foamed silicone rubber.

8. The laser-induced liquid phase deposition equipment for PET coating according to claim 6, characterized in that: The multi-material fluid switching system (7) includes a central cylinder (701), a delivery pipe (702), a branch pipe (703), a face gear mounting base (704), an active single-slot face gear (705), a driven four-slot face gear (706), a fluid switching disc (707), a drive pin (708), a connecting pipe groove (709), a fluid nozzle (710), and a laser head (711). The central cylinder (701) is rotatably engaged with the inner wall of the transfer ring (601). 701), an infusion tube (702) is installed on both the left and right sides of the central cylinder (701), and the infusion tube (702) passes through the positioning plate (508). Four branch tubes (703) are fixed at equal intervals inside the infusion tube (702). A face gear mounting seat (704) is fixed on both the left and right sides of the bottom surface of the central cylinder (701). An active single-slot face gear (705) is rotatably installed in each of the two face gear mounting seats (704). The infusion tube The lower end of (702) is rotatably engaged with a fluid flow switching disk (707). A driven four-slot gear (706) is fixedly sleeved on the outer wall of the fluid flow switching disk (707). The inner sides of the four slots of the driven four-slot gear (706) and the inner sides of the slots of the driving single-slot gear (705) are all fixed with drive pins (708). One drive pin (708) of the driving single-slot gear (705) and the four drive pins of the driven four-slot gear (706) are also fixed to each other. The pin (708) intermittently abuts and drives, the active single-slot gear (705) and the driven four-slot gear (706) intermittently mesh and drive, the liquid flow switching disk (707) is provided with a connecting pipe groove (709), and the connecting pipe groove (709) is intermittently connected to four branch pipes (703), the lower part of the liquid flow switching disk (707) is rotatably connected to a liquid flow nozzle (710), and a laser head (711) is installed in the middle of the bottom surface of the central cylinder (701).

9. The laser-induced liquid phase deposition equipment for PET coating according to claim 8, characterized in that: All four branch pipes (703) are connected to the sedimentation liquid supply system of the tank (301), and copper-based solution, silver-based solution, alloy composite solution and cleaning liquid flow in the four branch pipes (703) respectively. Rotation drive motors are installed at the input ends of the active helical gear (506), active spur gear (602) and active single slot surface gear (705).

10. The laser-induced liquid phase deposition apparatus for PET coating according to claim 8, characterized in that: The angle between adjacent slots of the driven four-slot gear (706) is 90 degrees, and the number of teeth in each of the four segments of the driven four-slot gear (706) is the same as the number of teeth in the driving single-slot gear (705).

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