Additive method TMC coating device

Abstract

The invention discloses an additive method TMC coating device which comprises a supporting plate, carrier rollers are fixedly connected to one side of the supporting plate at equal intervals, the tops of the carrier rollers are covered with a base material, a connecting frame is fixedly connected to one side of the supporting plate, connecting plates are symmetrically and slidably connected to the interior of the connecting frame, and a lifting mechanism matched with the connecting plates for use is arranged in the connecting frame. A coating assembly is installed at the bottom of the connecting plate and located above the base material. The invention relates to the technical field of reverse osmosis membrane and nanofiltration membrane production process equipment, the TMC coating device adopting the additive method can be accurately controlled, the accurate control of interfacial polymerization reaction amount is realized by controlling the coating amount, and the working efficiency of the equipment is improved; quantitative coating can realize maximization of solution utilization rate and reduce solution waste; and a closed-loop control coating mode of the additive spray head and the visual thickness gauge is adopted, physical contact with the base film is avoided, the risk that the surface of the base film is scratched does not exist, and the yield can be increased.

Description

Technical Field

[0001] The invention relates to the technical field of reverse osmosis membrane and nanofiltration membrane production process equipment, and specifically to an additive TMC coating device. Background Art

[0002] Additive manufacturing is a technology that uses a gradual accumulation of materials to manufacture physical parts, and the coating process is a type of additive manufacturing. ‌TMC coating refers to the process of preparing polyamide reverse osmosis membranes using the TMC interfacial polymerization method. In the production and processing of reverse osmosis membranes and nanofiltration membranes, in order to ensure the controllable interfacial polymerization reaction, the key process section, the TMC organic phase coating stage, requires precise quantitative control. However, the current TMC organic phase coating uses excessive coating and the removal of excess TMC organic phase solution at the end of the interfacial polymerization reaction to control the reaction volume in order to achieve the controllable function of the interfacial polymerization reaction. The current method has the disadvantages of being unable to accurately control the interfacial polymerization reaction, large solution consumption, easy scratches on the surface, and low efficiency, which makes it inconvenient to use. Therefore, we propose an additive TMC coating device. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides an additive TMC coating device, which solves the problems in the prior art such as the inability to accurately control the interfacial polymerization reaction, large solution consumption, easy scratches on the surface, and low efficiency.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A TMC coating device for additive method comprises a support plate, one side of the support plate is fixedly connected with a roller at an equal distance, the top of the roller is covered with a substrate, one side of the support plate is fixedly connected with a connection frame, the interior of the connection frame is symmetrically and slidably connected with a connection plate, the interior of the connection frame is provided with a lifting mechanism used in conjunction with the connection plate, a coating component is installed at the bottom of the connection plate and above the substrate, a plurality of groups of additive nozzles are fixedly connected at an equal distance at the bottom of the coating component and a visual thickness gauge is installed at an equal distance at the bottom of the coating component and on one side of the additive nozzle, a fixed frame is fixedly connected with one side of the connection frame, both sides of the fixed frame are symmetrically provided with a protective frame, one side of the protective frame is fixedly connected with a connecting frame, the connecting frame is slidably connected to the fixed frame, and the interior of the fixed frame is provided with a connecting frame for connecting When in use, multiple groups of additive nozzles are evenly arranged along the width direction of the substrate, and the spraying range covers the substrate. The visual thickness gauge is located behind the additive nozzle and can scan and measure the thickness of the TMC solution sprayed by the additive nozzle. Through the arrangement of the coating component, the roller, the additive nozzle and the visual thickness gauge, a variety of coating effects such as single-layer full-width TMC solution coating, double-layer full-width TMC solution coating, single-layer distributed TMC solution coating and double-layer distributed TMC solution coating can be achieved. The connecting plate is driven to move by the lifting mechanism, and the connecting plate drives the coating component to move upward for storage. The connecting frame can be driven to move by the adjusting mechanism, and the connecting frame drives the protective frame to move, so that the additive nozzle and the visual thickness gauge are shielded and protected by the two groups of protective frames to prevent dust from adhering.

[0005] Preferably, the lifting mechanism includes a sliding plate, the inner wall of the connecting frame is symmetrically and slidingly connected to the sliding plate, one side of the sliding plate is equidistantly fixedly connected to a second connecting block, the second connecting block is rotatably connected to a connecting rod inside, the end of the connecting plate away from the coating component is fixedly connected to a lifting plate, one side of the lifting plate is symmetrically and fixedly connected to a first connecting block, the connecting rod is rotatably connected to the first connecting block, the movement of the sliding plate drives the second connecting block to move, thereby driving the connecting rod to rotate, the rotation of the connecting rod drives the first connecting block to move, the first connecting block drives the lifting plate to move, and then drives the connecting plate to move, so as to facilitate the storage of the coating component.

[0006] Preferably, a fixing rod is symmetrically fixedly connected to the inner wall of the connecting frame, the lifting plate is slidably connected to the fixing rod, and a stopper is fixedly connected to one end of the fixing rod away from the connecting frame. The movement of the lifting plate can be limited by the setting of the fixing rod and the stopper to prevent the lifting plate from deflecting during the movement.

[0007] Preferably, the inner wall of the connecting frame is symmetrically fixedly connected with fixed blocks, a limiting slide rod is fixedly connected between the two fixed blocks, the sliding plate is slidably connected to the limiting slide rod, and the movement of the sliding plate can be limited by the setting of the limiting slide rod to prevent the sliding plate from deviating during the movement.

[0008] Preferably, a bidirectional screw is rotatably connected between the two fixed blocks, the sliding plate is threadedly connected to the bidirectional screw, a second motor is fixedly connected to one side of the fixed block, the output end of the second motor is fixedly connected to the bidirectional screw, the bidirectional screw is driven to rotate by the second motor, and the sliding plate is driven to move by the rotation of the bidirectional screw.

[0009] Preferably, the adjustment mechanism includes a rotating shaft, the fixed frame is rotatably connected to the inside of the rotating shaft, the outer side of the rotating shaft is fixedly connected to a gear, and one side of the connecting frame is fixedly connected to a rack used in conjunction with the gear. The rotation of the rotating shaft drives the gear to rotate, and the rotation of the gear drives the rack to move. The rack drives the connecting frame to move, and then drives the protective frame to move, so as to facilitate the shielding and protection of the additive nozzle and the visual thickness gauge.

[0010] Preferably, the interior of the fixed frame is equidistantly fixedly connected to a limiting rod, the outer side of the limiting rod is slidably connected to a limiting block, and the limiting block is fixedly connected to the connecting frame. The setting of the limiting block and the limiting rod can limit the movement of the connecting frame to prevent the connecting frame from being offset during the movement.

[0011] Preferably, a worm is rotatably connected inside the fixed frame, a worm wheel used in conjunction with the worm is fixedly connected to the outer side of the rotating shaft, a first motor is fixedly connected to the top of the fixed frame, an output end of the first motor is fixedly connected to the worm, the worm is driven to rotate by the first motor, the worm wheel is driven to rotate by the worm, and the rotating shaft is driven to rotate.

[0012] Preferably, a protective cushion is provided on the outer side of the protective frame. The provision of the protective cushion can reduce the collision caused when the two sets of protective frames are pressed against each other, thereby enhancing the service life of the device.

[0013] The present invention provides an additive TMC coating device. Compared with the prior art, it has the following beneficial effects: 1. The additive TMC coating device can be precisely controlled to achieve precise control of the amount of interfacial polymerization reaction by controlling the coating amount, thereby improving the working efficiency of the equipment.

[0014] 2. The additive TMC coating device can achieve quantitative coating, maximize the utilization rate of solution and reduce solution waste.

[0015] 3. The additive TMC coating device adopts a closed-loop control coating method of an additive nozzle and a visual thickness gauge. There is no physical contact with the base film, and there is no risk of scratching the base film surface, which can improve the yield rate.

[0016] 4. The additive TMC coating device realizes the function of storing and protecting the coating components when not in use by setting a lifting mechanism, a connecting plate, a fixing frame, an adjusting mechanism, a connecting frame and a protective frame, thereby preventing dust from adhering to the additive nozzle and the visual thickness gauge, and having a good protective effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is a schematic diagram of the structure of the coating assembly of the present invention when it is stored; Figure 3 is a schematic diagram of the structure of the coating assembly of the present invention; Figure 4 It is a schematic diagram of the internal structure of the connection frame of the present invention; Figure 5 It is a structural schematic diagram of the lifting mechanism of the present invention; Figure 6 It is a schematic diagram of the internal structure of the fixing frame of the present invention; Figure 7 It is a structural schematic diagram of the regulating mechanism of the present invention.

[0018] In the figure: 1. coating assembly; 2. roller; 3. substrate; 4. additive nozzle; 5. visual thickness gauge; 6. lifting mechanism; 601. fixed block; 602. limit slide rod; 603. connecting rod; 604. sliding plate; 605. lifting plate; 606. bidirectional screw; 607. first connecting block; 608. second connecting block; 7. adjustment mechanism; 701. rack; 702. worm; 703. rotating shaft; 704. worm gear; 705. gear; 706. limit block; 707. limit rod; 8. protective frame; 9. connecting frame; 10. fixed frame; 11. connecting frame; 12. support plate; 13. first motor; 14. connecting plate; 15. second motor; 16. fixed rod; 17. stopper. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 to 7 , the present invention provides a technical solution: A TMC coating device for additive method comprises a support plate 12, one side of the support plate 12 is fixedly connected with a roller 2 at an equal distance, the top of the roller 2 is covered with a substrate 3, one side of the support plate 12 is fixedly connected with a connection frame 11, the interior of the connection frame 11 is symmetrically slidably connected with a connection plate 14, the interior of the connection frame 11 is provided with a lifting mechanism 6 used in conjunction with the connection plate 14, a coating component 1 is installed at the bottom of the connection plate 14 and above the substrate 3, a plurality of groups of additive nozzles 4 are fixedly connected at an equal distance at the bottom of the coating component 1, a visual thickness gauge 5 is installed at an equal distance at the bottom of the coating component 1 and on one side of the additive nozzle 4, a fixed frame 10 is fixedly connected to one side of the connection frame 11, and protective frames 8 are symmetrically provided on both sides of the fixed frame 10, one side of the protective frame 8 is fixedly connected with a connection frame 9, the connection frame 9 is slidably connected to the fixed frame 10, and the interior of the fixed frame 10 is provided with a connecting frame 9 that cooperates with the connecting frame 9 The adjusting mechanism 7 is used; when in use, multiple groups of additive nozzles 4 are evenly arranged along the width direction of the substrate 3, and the spraying range covers the substrate 3. The visual thickness gauge 5 is located behind the additive nozzle 4, and can scan and measure the thickness of the TMC solution sprayed by the additive nozzle 4. Through the arrangement of the coating component 1, the roller 2, the additive nozzle 4 and the visual thickness gauge 5, a variety of coating effects such as single-layer full-width TMC solution coating, double-layer full-width TMC solution coating, single-layer distributed TMC solution coating and double-layer distributed TMC solution coating can be achieved. The connecting plate 14 is driven to move by the lifting mechanism 6, and the connecting plate 14 drives the coating component 1 to move upward for storage. The connecting frame 9 can be driven to move by the adjusting mechanism 7, and the connecting frame 9 drives the protective frame 8 to move, so that the additive nozzle 4 and the visual thickness gauge 5 are shielded and protected by the two groups of protective frames 8 to prevent dust adhesion.

[0021] Furthermore, the lifting mechanism 6 includes a sliding plate 604, and the inner wall of the connecting frame 11 is symmetrically slidably connected to the sliding plate 604, one side of the sliding plate 604 is equidistantly fixedly connected to a second connecting block 608, the second connecting block 608 is internally rotatably connected to a connecting rod 603, and the end of the connecting plate 14 away from the coating component 1 is fixedly connected to a lifting plate 605, and one side of the lifting plate 605 is symmetrically fixedly connected to a first connecting block 607, and the connecting rod 603 is rotatably connected to the first connecting block 607, and the movement of the sliding plate 604 drives the second connecting block 608 to move, thereby driving the connecting rod 603 to rotate, and the rotation of the connecting rod 603 drives the first connecting block 607 to move, and the first connecting block 607 drives the lifting plate 605 to move, and then drives the connecting plate 14 to move, so as to facilitate the storage of the coating component 1.

[0022] Furthermore, the inner wall of the connecting frame 11 is symmetrically fixedly connected with a fixing rod 16, the lifting plate 605 is slidably connected to the fixing rod 16, and the end of the fixing rod 16 away from the connecting frame 11 is fixedly connected with a stop block 17. The setting of the fixing rod 16 and the stop block 17 can limit the movement of the lifting plate 605 to prevent the lifting plate 605 from being offset during the movement.

[0023] Furthermore, the inner wall of the connecting frame 11 is symmetrically fixedly connected with a fixed block 601, a limiting slide bar 602 is fixedly connected between the two fixed blocks 601, and the sliding plate 604 is slidably connected to the limiting slide bar 602. The movement of the sliding plate 604 can be limited by the setting of the limiting slide bar 602 to prevent the sliding plate 604 from being offset during the movement.

[0024] Furthermore, a bidirectional screw rod 606 is rotatably connected between the two fixed blocks 601, and the sliding plate 604 is threadedly connected to the bidirectional screw rod 606. A second motor 15 is fixedly connected to one side of the fixed block 601, and the output end of the second motor 15 is fixedly connected to the bidirectional screw rod 606. The bidirectional screw rod 606 is driven to rotate by the second motor 15, and the sliding plate 604 is driven to move by the rotation of the bidirectional screw rod 606.

[0025] Furthermore, the adjustment mechanism 7 includes a rotating shaft 703, the internal rotation of the fixed frame 10 is connected to the rotating shaft 703, the outer side of the rotating shaft 703 is fixedly connected to a gear 705, and one side of the connecting frame 9 is fixedly connected to a rack 701 used in conjunction with the gear 705. The rotation of the rotating shaft 703 drives the gear 705 to rotate, and the rotation of the gear 705 drives the rack 701 to move. The rack 701 drives the connecting frame 9 to move, and then drives the protective frame 8 to move, so as to facilitate the shielding and protection of the additive nozzle 4 and the visual thickness gauge 5.

[0026] Furthermore, the interior of the fixed frame 10 is equidistantly fixedly connected with a limiting rod 707, the outer side of the limiting rod 707 is slidably connected to a limiting block 706, and the limiting block 706 is fixedly connected to the connecting frame 9. The setting of the limiting block 706 and the limiting rod 707 can limit the movement of the connecting frame 9 to prevent the connecting frame 9 from being offset during the movement.

[0027] Furthermore, a worm 702 is rotatably connected inside the fixed frame 10, a worm wheel 704 used in conjunction with the worm 702 is fixedly connected to the outer side of the rotating shaft 703, a first motor 13 is fixedly connected to the top of the fixed frame 10, an output end of the first motor 13 is fixedly connected to the worm 702, the worm 702 is driven to rotate by the first motor 13, the worm wheel 704 is driven to rotate by the worm 702, and the rotating shaft 703 is driven to rotate.

[0028] Furthermore, a protective cushion is provided on the outer side of the protective frame 8. The provision of the protective cushion can reduce the collision generated when the two sets of protective frames 8 are pressed against each other, thereby increasing the service life of the device.

[0029] How it works When in use, a variety of coating effects such as single-layer full-width TMC solution coating, double-layer full-width TMC solution coating, single-layer distributed TMC solution coating and double-layer distributed TMC solution coating can be achieved through the arrangement of the coating component 1, the roller 2, the additive nozzle 4 and the visual thickness gauge 5; Coating method 1: single-layer full-width TMC solution coating, the substrate 3 runs stably along the arrow direction in the figure through the roller 2, and the coating component 1 located above the roller 2 quantitatively coats the TMC solution onto the substrate 3. The coating process is that the multiple groups of additive nozzles 4 set at the front end of the coating component 1 spray the TMC solution onto the upper surface of the substrate 3, and the visual thickness gauge 5 at the rear measures the coating thickness and feeds the result back to the control system of the front-end additive nozzle 4, and the spraying amount of the additive nozzle 4 is closed-loop controlled to achieve precise quantitative coating of the TMC solution; Coating method two: double-layer full-width TMC solution coating, the substrate 3 runs stably along the direction of the arrow in the figure through the roller 2, and the coating component 1 located above the roller 2 quantitatively coats the TMC solution onto the substrate 3. The coating process is that the multiple groups of additive nozzles 4 set at the front end of the coating component 1 spray the TMC solution onto the upper surface of the substrate 3, and the rear visual thickness gauge 5 measures the coating thickness and feeds back the result to control the control system of the front-end additive nozzle 4, and closes the loop to control the spraying amount of the additive nozzle 4, so as to achieve the precise quantitative coating of the front-end TMC solution. After the front-end coating is completed, the multiple groups of additive nozzles 4 set at the rear end of the coating component 1 spray the TMC solution onto the upper surface of the substrate 3. The rear visual thickness gauge 5 measures the total coating thickness, and feeds back the result of the calculation minus the front-end coating thickness to control the control system of the rear-end additive nozzle 4, and closes the loop to control the spraying amount of the additive nozzle 4, so as to achieve the precise quantitative coating of the rear-end TMC solution, and complete the TMC solution coating function twice; Coating method three: single-layer distributed TMC solution coating, the substrate 3 runs stably along the direction of the arrow in the figure through the roller 2, and the coating component 1 located above the roller 2 quantitatively coats the TMC solution on the substrate 3. The coating process is that multiple groups of independently controlled additive nozzles 4 set at the front end of the coating component 1 spray the TMC solution to a specific area on the surface of the substrate 3, and the rear visual thickness gauge 5 measures the coating thickness and area contour of the specific area, and feeds back the results to control the control system of the front-end additive nozzle 4, and closes the loop to control the spraying amount of the additive nozzle 4 and the control point of the additive nozzle 4, so as to achieve the front-end TMC solution. Precisely quantitatively coat the TMC solution in a fixed area; Coating method 4: Double-layer distributed TMC solution coating, the substrate 3 runs stably along the direction of the arrow in the figure through the roller 2, and the coating component 1 located above the roller 2 quantitatively coats the TMC solution on the substrate 3. The coating process is that the multiple groups of independently controlled additive nozzles 4 set at the front end of the coating component 1 spray the TMC solution to a specific area on the surface of the substrate 3, and the rear visual thickness gauge 5 measures the coating thickness and area contour of the specific area, and feeds back the results to control the control system of the front-end additive nozzle 4, and closes the loop to control the spraying amount of the additive nozzle 4 and the control point of the additive nozzle 4, so as to realize the front-end TMC The solution precisely determines the area and quantitatively coats the TMC solution; after the front-end coating is completed, the multiple groups of independently controlled additive nozzles 4 arranged at the rear end of the coating component 1 spray the TMC solution to a specific area on the surface of the substrate 3, and the rear visual thickness gauge 5 measures the coating thickness and area contour of the specific area of ​​the coating, calculates the result of subtracting the coating thickness of the front-end stacking area, and feedback controls the control system of the rear-end additive nozzle 4, and closes the loop to control the spraying amount of the additive nozzle 4 and the control point of the additive nozzle 4, so as to achieve the precise and quantitative coating of the TMC solution in the rear end, and complete the double-layer distributed TMC solution coating function; By setting up multiple groups of coating components 1 and combining more layers of full-width and distributed TMC solution coating functions, more process options are provided for the manufacture of reverse osmosis membranes and nanofiltration membranes. When not in use, the connecting plate 14 can be moved by the lifting mechanism 6, and the connecting plate 14 drives the coating component 1 to move upward for storage. The connecting frame 9 can be driven to move by the adjustment mechanism 7, and the connecting frame 9 drives the protective frame 8 to move, so that the additive nozzle 4 and the visual thickness gauge 5 are shielded and protected by the two groups of protective frames 8 to prevent dust adhesion.

[0030] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An additive TMC coating device, comprising a support plate (12), characterized in that: One side of the support plate (12) is fixedly connected to rollers (2) at equal distances, the top of the rollers (2) is covered with a substrate (3), one side of the support plate (12) is fixedly connected to a connection frame (11), the interior of the connection frame (11) is symmetrically slidably connected to a connection plate (14), the interior of the connection frame (11) is provided with a lifting mechanism (6) for use with the connection plate (14), the bottom of the connection plate (14) and located above the substrate (3) is installed with a coating assembly (1), the bottom of the coating assembly (1) is equidistantly connected to the substrate (3), and the bottom of the coating assembly (1) is equidistantly connected to the substrate (3). A plurality of groups of additive nozzles (4) are fixedly connected, a visual thickness gauge (5) is equidistantly installed at the bottom of the coating assembly (1) and on one side of the additive nozzle (4), a fixed frame (10) is fixedly connected to one side of the connecting frame (11), protective frames (8) are symmetrically provided on both sides of the fixed frame (10), a connecting frame (9) is fixedly connected to one side of the protective frame (8), the connecting frame (9) is slidably connected to the fixing frame (10), and an adjusting mechanism (7) for use with the connecting frame (9) is provided inside the fixing frame (10).

2. The additive TMC coating device according to claim 1, characterized in that: The lifting mechanism (6) comprises a sliding plate (604), the inner wall of the connecting frame (11) is symmetrically slidably connected to the sliding plate (604), one side of the sliding plate (604) is equidistantly fixedly connected to a second connecting block (608), the interior of the second connecting block (608) is rotatably connected to a connecting rod (603), one end of the connecting plate (14) away from the coating component (1) is fixedly connected to a lifting plate (605), one side of the lifting plate (605) is symmetrically fixedly connected to a first connecting block (607), and the connecting rod (603) is rotatably connected to the first connecting block (607).

3. The additive TMC coating device according to claim 2, characterized in that: The inner wall of the connection frame (11) is symmetrically fixedly connected with a fixing rod (16), the lifting plate (605) is slidably connected to the fixing rod (16), and one end of the fixing rod (16) away from the connection frame (11) is fixedly connected with a stopper (17).

4. The additive TMC coating device according to claim 2, characterized in that: The inner wall of the connection frame (11) is symmetrically fixedly connected with fixed blocks (601), a limit sliding rod (602) is fixedly connected between the two fixed blocks (601), and the sliding plate (604) is slidably connected to the limit sliding rod (602).

5. The additive TMC coating device according to claim 4, characterized in that: A bidirectional screw rod (606) is rotatably connected between the two fixed blocks (601), the sliding plate (604) is threadedly connected to the bidirectional screw rod (606), a second motor (15) is fixedly connected to one side of the fixed block (601), and an output end of the second motor (15) is fixedly connected to the bidirectional screw rod (606).

6. The additive TMC coating device according to claim 1, characterized in that: The adjusting mechanism (7) comprises a rotating shaft (703), the interior of the fixed frame (10) is rotatably connected to the rotating shaft (703), the outer side of the rotating shaft (703) is fixedly connected to a gear (705), and one side of the connecting frame (9) is fixedly connected to a rack (701) used in conjunction with the gear (705).

7. The additive TMC coating device according to claim 6, characterized in that: The interior of the fixed frame (10) is equidistantly fixedly connected to a limit rod (707), the outer side of the limit rod (707) is slidably connected to a limit block (706), and the limit block (706) is fixedly connected to the connecting frame (9).

8. The additive TMC coating device according to claim 6, characterized in that: A worm (702) is rotatably connected inside the fixed frame (10), a worm wheel (704) used in conjunction with the worm (702) is fixedly connected to the outside of the rotating shaft (703), and a first motor (13) is fixedly connected to the top of the fixed frame (10), and an output end of the first motor (13) is fixedly connected to the worm (702).

9. The additive TMC coating device according to claim 1, characterized in that: A protective cushion is provided on the outer side of the protective frame (8).

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