A multifunctional digital printing machine

Abstract

The present application relates to the technical field of printing machine, disclose a kind of multifunctional digital printing machine, including rack, work platform being arranged on the rack, beam being vertically movably installed on the rack, nozzle assembly being transversely movably installed on the beam, one end of the work platform is equipped with unwinding mechanism, both sides and the other end of the work platform are equipped with film clamping tensioning mechanism, film cutting mechanism is equipped between the work platform and the unwinding mechanism, film suction mechanism is equipped between the film cutting mechanism and the unwinding mechanism, further including transfer roller, the transfer roller is located on the rack by lifting movement mechanism, bearing seat on the transfer roller is equipped with film feeding mechanism;The nozzle assembly includes nozzle trolley and printing mechanism being arranged in nozzle trolley, further including powdering mechanism.The present application realizes powdering and digital printing integration and transfer film four edges tensioning, can be applied to the printing of various products, ensure that transfer film is evenly covered on printing substrate.

Description

Technical Field

[0001] This invention relates to the field of printing press technology, and in particular to a digital printing press transfer component. Background Technology

[0002] Digital printing machines are widely used in daily life. However, existing digital printing machines can only achieve digital inkjet printing of white, color, and varnish, making it difficult to fully reproduce the authenticity of the object and display its special effects.

[0003] Existing powdering processes cannot be directly implemented using digital printing presses. In order to enhance the visual effects of printed patterns while reproducing the true colors of the actual objects, the current practice is to use ordinary printing presses to create printing plates and then use transfer (heat transfer and hot stamping) equipment or powdering equipment to achieve the purpose of enhancing the visual effects of the printing process through multiple machines. Although this can enhance the special effects of printed patterns, the disadvantages are also obvious. It is impossible to achieve repeated positioning of multiple machines on all soft materials and irregularly shaped substrates, which cannot meet the printing needs of most products.

[0004] Existing transfer machines (transfer printing and hot stamping) mainly tighten the transfer film at both ends. When the transfer film covers the surface of the substrate, it will cause wrinkles on the transfer film, resulting in poor transfer effect and affecting product quality. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a multi-functional digital printing machine. The powder dispensing mechanism is combined with the inkjet printing component to complete the integration of powder dispensing and digital printing. It can be applied to the printing of various products, realizes the four-sided tension of the transfer film, ensures the flat coverage of the transfer film on the substrate, and guarantees product quality.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A multi-functional digital printing machine includes a frame, a work platform mounted on the frame, a crossbeam longitudinally movable on the frame, and a printhead assembly laterally movable on the crossbeam.

[0008] The working platform is provided with an unwinding mechanism at one end, and film clamping and tensioning mechanisms are provided on both sides and the other end of the working platform. A film cutting mechanism is provided between the working platform and the unwinding mechanism, and a film suction mechanism is provided between the film cutting mechanism and the unwinding mechanism. It also includes a transfer roller, which is mounted on the frame via a lifting and moving mechanism. A film feeding mechanism is provided on the bearing seat of the transfer roller.

[0009] The printhead assembly includes a printhead carriage and a printing mechanism disposed inside the printhead carriage, as well as a powder dispensing mechanism and a third drive mechanism. The powder dispensing mechanism is disposed on both sides of the printing mechanism, and a UV curing mechanism is provided between the powder dispensing mechanism and the printing mechanism. The rear side wall of the printhead carriage is provided with a slider that slides with the crossbeam. The third drive mechanism is connected to the slider and is used to drive the printhead carriage to move up and down relative to the slider.

[0010] Preferably, the clamping and tensioning mechanism includes a clamping mechanism and a first driving mechanism. The clamping mechanism includes a clamping seat and a second driving mechanism disposed on the clamping seat. The clamping seat includes a clamping wall and a clamping block is disposed inside the clamping seat. The second driving mechanism is used to drive the clamping block to move toward or away from the clamping wall. The first driving mechanism is used to drive the clamping mechanism to move up and down; or to drive the clamping mechanism to move toward or away from the working platform.

[0011] Preferably, the clamping tensioning mechanism further includes a mounting bracket for connecting the frame, the first driving mechanism is a tensioning cylinder, the cylinder barrel of the tensioning cylinder is connected to the mounting bracket, and the telescopic rod of the tensioning cylinder is connected to the clamping mechanism.

[0012] The mounting bracket includes a support portion and a connecting portion for connecting to the frame. The support portion is arranged perpendicularly to the connecting portion, and a support tube is provided at the other end of the support portion corresponding to the clamping block.

[0013] Preferably, the unwinding mechanism includes a mounting plate, an unwinding roller, a rack, a first lifting mechanism and a push-pull mechanism disposed on the mounting plate, the unwinding roller includes a connecting part and a supporting part for mounting the roll material, the connecting part is rotatably disposed on the mounting plate, the connecting part is provided with a first gear, the first lifting mechanism and the push-pull mechanism are both connected to the rack, and the first lifting mechanism is used to drive the rack to move up and down, and the push-pull mechanism is used to drive the rack to mesh or disengage with the first gear.

[0014] Preferably, the film cutting mechanism includes a second lifting mechanism disposed opposite to each other on both sides of the frame, the second lifting mechanism is provided with a heating wire fixing seat, and a heating wire is connected between the two heating wire fixing seats; the heating wire fixing seat is also provided with a tensioning mechanism for tightening the heating wire.

[0015] Preferably, the film feeding mechanism includes a clamping mechanism, a connecting plate, and a fourth lifting mechanism disposed on the bearing seat. The connecting plate includes a driving end and a film clamping end. The driving end is connected to the fourth lifting mechanism. The film clamping end is provided with a first clamp and a second clamp that cooperate with each other. The clamping mechanism is used to drive the second clamp to move toward or away from the first clamp.

[0016] Preferably, the film suction mechanism includes a third lifting mechanism disposed opposite to both sides of the frame, the third lifting mechanism being provided with a suction cup fixing seat, and the suction cup fixing seat being provided with a suction cup for adsorbing the transfer film.

[0017] Preferably, the lifting and moving mechanism includes two rack guides symmetrically arranged on both sides of the frame and two drive components arranged in a one-to-one correspondence with the two rack guides;

[0018] The drive assembly includes a mounting frame, on which a lead screw and a first power mechanism for driving the lead screw to rotate are provided. The upper end of the lead screw is connected to a bearing seat, and a transfer roller is connected between the two bearing seats. The mounting frame is also provided with a second gear that meshes with the rack and pinion guide rail. The second gear is driven to rotate by the second power mechanism.

[0019] Preferably, the powder-spraying mechanism includes a powder storage tank, a stirring brush, and a fourth driving mechanism. The lower end of the powder storage tank is provided with a powder spraying head assembly, and the stirring brush is disposed inside the powder storage tank corresponding to the powder spraying head assembly. The fourth driving mechanism is used to drive the stirring brush to rotate.

[0020] The powder storage tank is also connected to an air pipe connector, which is used to connect an air source to drive the powder to be sprayed out by the powder spraying head assembly.

[0021] Preferably, the powder spraying head assembly includes a lower cover, a powder spraying tube, a powder spraying head, and a powder sieve arranged coaxially. The lower cover is connected to the powder storage tank. One end of the powder spraying tube passes through the lower cover and communicates with the inside of the powder storage tank. The powder spraying head covers the other end of the powder spraying tube. The powder sieve is disposed inside the powder spraying head and is located between the inner wall of the powder spraying head and the powder spraying tube. The stirring brush is disposed inside the powder spraying tube.

[0022] The advantages of the film clamping and tensioning mechanism of the digital printing machine according to an embodiment of the present invention compared with the prior art are as follows: by setting an unwinding mechanism at one end of the working platform, and setting film clamping and tensioning mechanisms at both sides and the other end of the working platform, the unwinding mechanism tightens one side of the transfer film, and the film clamping and tensioning mechanism tightens the other three sides of the transfer film, so that all four sides of the transfer film can be tightened, ensuring that the transfer film flatly covers the substrate, thereby ensuring product quality.

[0023] By incorporating powder-spraying mechanisms on both sides of the printing mechanism on the printhead carriage, the powder-spraying mechanism, combined with the printing components, achieves integrated powder spraying and digital printing. This not only ensures better printing results but also simplifies the printing process. Furthermore, because it eliminates the need for repeated positioning, it can be applied to printing various products. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the multifunctional digital printing machine of the present invention.

[0025] Figure 2 for Figure 1 sectional view

[0026] Figure 3 This is a schematic diagram of the membrane clamping and tightening mechanism of the present invention.

[0027] Figure 4 This is a schematic diagram of the membrane clamping and tightening mechanism of the present invention, which includes a connecting seat.

[0028] Figure 5 for Figure 3 A magnified view of part A in the image.

[0029] Figure 6 This is a schematic diagram of the unwinding mechanism of the present invention.

[0030] Figure 7 For this Figure 6 A magnified view of a portion of the image.

[0031] Figure 8 This is a schematic diagram of the film cutting mechanism of the present invention.

[0032] Figure 9 This is a schematic diagram of the heating wire holder of the present invention.

[0033] Figure 10 This is a schematic diagram of the film feeding mechanism of the present invention.

[0034] Figure 11 This is a partial view of the film feeding mechanism of the present invention.

[0035] Figure 12 This is a schematic diagram of the connecting plate of the film feeding mechanism of the invention.

[0036] Figure 13 This is a schematic diagram of the film suction mechanism of the present invention.

[0037] Figure 14 This is a schematic diagram of the lifting and moving mechanism of the present invention.

[0038] Figure 15 for Figure 14 A magnified view of part B in the image.

[0039] Figure 16 This is a schematic diagram showing the cooperation between the first power mechanism and the lead screw of the lifting and moving mechanism of the present invention.

[0040] Figure 17 This is a side view of the printhead assembly of the digital printing press according to the present invention.

[0041] Figure 18 This is an isometric view of the printhead assembly of the digital printing press of the present invention.

[0042] Figure 19 This is a schematic diagram of the powder dispensing mechanism of the digital printing press printhead assembly of the present invention connected to the mounting plate.

[0043] Figure 20 This is a schematic diagram illustrating the powder-spraying principle of the powder-spraying mechanism of the present invention.

[0044] Figure 21 This is a schematic diagram of the powder-spreading mechanism of the present invention.

[0045] Figure 22 for Figure 21 Exploded view.

[0046] Wherein: 1-frame, 2-work platform;

[0047] 3-Unwinding mechanism, 31-Mounting plate, 32-Unwinding roller, 321-Connecting part, 322-Supporting part, 33-Rack, 34-First gear, 35-Bearing seat, 36-Fixing ring, 37-Drive plate, 371-Drive hole, 38-First mounting seat, 39-Push-pull shaft, 3a-Second mounting seat, 3b-First lifting cylinder, 3c-Push-pull cylinder;

[0048] 4-Printer assembly, 41-Printer carriage, 42-Printing mechanism, 43-Powder dispensing mechanism, 431-Powder storage tank, 432-Stirring brush, 433-Top cover, 434-Rotating motor, 435-Air pipe connector, 436-Rotating motor support plate, 437-Rotating motor fixing plate, 438-Stud, 439-Powder suction pipe, 4310-Powder discharge port, 4311-Lower cover, 4312-Powder spraying pipe, 4313-Powder spraying head, 4314-Powder sieve, 4315-Sealing gasket, 4316-Flange nut, 4317-Seal 44-UV curing mechanism, 45-slider, 46-lifting motor, 47-silence eliminator, 48-mounting plate, 49-screw motor, 410-guide rail, 5-film clamping tensioning mechanism, 54-clamping mechanism, 541-clamping seat, 5411-clamping plate, 5412-fourth fixing plate, 5413-connecting plate, 542-clamping block, 55-mounting bracket, 56-tensioning cylinder, 57-support hose, 58-limit switch, 59-drive cylinder, 5a-first protective film, 5b-second protective film, 5c-connecting seat;

[0049] 6-Film cutting mechanism, 61-Second lifting cylinder, 62-Heating wire fixing seat, 63-Connecting rod, 631-First connecting part, 632-Second connecting part, 64-Fixing rod, 641-Mounting hole, 65-Tension spring, 66-Heating wire;

[0050] 7-Suction film mechanism, 71-Fourth lifting cylinder, 72-Suction cup fixing seat, 721-Connecting rod, 722-Mounting rod, 73-Cylinder fixing seat, 74-Support tube, 75-Suction cup;

[0051] 8-Lifting and moving mechanism, 81-Rack and pinion guide rail, 82-Mounting bracket, 83-Screw rod, 84-Bearing seat, 86-Second gear, 87-Slider, 88-Limiting bar, 89-Connecting rod, 810-Connecting frame, 811-Connecting ear, 812-First driving pulley, 813-First driven pulley, 814-First motor, 815-Worm gear, 816-Rotating drum, 817-Turbine, 818-Second driving pulley, 819-Second driven pulley, 820-Second motor, 821-Guide cylinder, 822-Guide rod;

[0052] 9-Film feeding mechanism, 93-Connecting plate, 931-Mounting groove, 94-First chuck, 941-Connecting part, 942-Clamping part, 95-Second chuck, 96-Third lifting cylinder, 97-First fixing plate, 98-Clamping cylinder, 99-Third fixing plate, 9a-Second fixing plate;

[0053] a- Transfer roller, b- Slide block, c- Third driving pulley, d- Third driven pulley, e- Third belt, f- Mounting platform, g- Crossbeam Detailed Implementation

[0054] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0055] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] like Figure 1-2 As shown, a preferred embodiment of the present invention provides a multifunctional digital printing machine, comprising a frame 1, a work platform 2 mounted on the frame 1, a crossbeam g that is longitudinally movable on the frame 1, a printhead assembly 4 that is laterally movable on the crossbeam g, and a work platform 2 mounted on the frame 1. The work platform 2 is evenly distributed with a plurality of positioning pins. During printing, the product is mounted on the positioning pins for positioning, thereby ensuring the quality and efficiency of printing.

[0058] One end of the working platform 2 is provided with an unwinding mechanism 3. Both sides and the other end of the working platform 2 are provided with film clamping and tensioning mechanisms 5. A film cutting mechanism 6 is provided between the working platform 2 and the unwinding mechanism 3. A film suction mechanism 7 is provided between the film cutting mechanism 6 and the unwinding mechanism 3. It also includes a transfer roller a. The transfer roller a is mounted on the frame 1 through a lifting and moving mechanism 8. A film feeding mechanism 9 is provided on the bearing seat 84 of the transfer roller a. A heating tube is provided at the center of the transfer roller a.

[0059] The printhead assembly 4 includes a printhead carriage 41 and a printing mechanism 42 disposed inside the printhead carriage 41. It also includes a powder-spreading mechanism 43 and a third drive mechanism. The powder-spreading mechanism 43 is located on both sides of the printing mechanism 42. A UV curing mechanism 44 is provided between the powder-spreading mechanism 43 and the printing mechanism 42. A slider 45 is provided on the rear side wall of the printhead carriage 41, which slides against the crossbeam g. The third drive mechanism is connected to the slider 45 and is used to drive the printhead carriage 41 to rise and fall relative to the slider 45. Specifically, the third drive mechanism is a lifting motor 46 fixed to the outer wall of the printhead carriage 41. A lead screw is connected to the output shaft of the lifting motor 46, and the lead screw is threadedly connected to the slider 45, thereby driving the printhead carriage 41 to rise and fall relative to the slider 45 through the rotation of the lead screw. Meanwhile, as the slider 45 drives the printhead carriage 41 to move laterally along the crossbeam g, combined with the longitudinal movement of the crossbeam g itself along the frame 1, the three-axis motion of the printhead carriage 41 relative to the printed material is realized.

[0060] Based on the above technical features, the multi-functional digital printing machine has an unwinding mechanism 3 at one end of the working platform 2, and film clamping and tensioning mechanisms 5 on both sides and the other end of the working platform 2. The unwinding mechanism 3 tightens one side of the transfer film, and the film clamping and tensioning mechanisms 5 tighten the other three sides of the transfer film, so that all four sides of the transfer film can be tightened, ensuring that the transfer film covers the substrate smoothly and thus ensuring product quality.

[0061] By setting powder-spraying mechanisms 43 on both sides of the printing mechanism 42 on the printhead carriage 41, the powder-spraying mechanisms 43, combined with the printing components, achieve integrated powder spraying and digital printing. This not only better ensures the printing effect of the product but also simplifies the printing process. Furthermore, because it does not require repeated positioning, it can be applied to the printing of various products.

[0062] like Figure 3-5 In this embodiment, the membrane clamping and tensioning mechanism 5 includes a clamping mechanism 54 and a first driving mechanism. The clamping mechanism 54 includes a clamping seat 541 and a second driving mechanism disposed on the clamping seat 541. The clamping seat 541 includes a clamping wall, and a clamping block 542 is provided inside the clamping seat 541. The second driving mechanism is used to drive the clamping block 542 to move toward or away from the clamping wall. The first driving mechanism is used to drive the clamping mechanism 54 to move up and down; or to drive the clamping mechanism 54 to move toward or away from the working platform 2.

[0063] By providing a clamping wall on the clamping seat 541, and a clamping block 542 inside the clamping seat 541, the second driving mechanism drives the clamping block 542 to move towards or away from the clamping wall. After the transfer film is delivered between the clamping wall and the clamping block 542, the second driving mechanism drives the clamping block 542 to move towards the clamping wall, thereby clamping the transfer film. Then, the first driving mechanism drives the clamping mechanism 54 to move up and down; or drives the clamping mechanism 54 to move towards or away from the working platform 52, thereby achieving tensioning of the transfer film. At the same time, since the film clamping and tensioning mechanism 5 is located at the end or side of the working platform 2, all four sides of the transfer film can be tensioned, ensuring that the transfer film covers the substrate flatly, thereby ensuring product quality.

[0064] In this embodiment, the film clamping and tensioning mechanism 5 includes a mounting bracket 55 for connecting to the frame 1, facilitating installation. The first driving mechanism is a tensioning cylinder 56, the cylinder of which is connected to the mounting bracket 55, and the telescopic rod of which is connected to the clamping mechanism 54. When the tensioning cylinder 56 is activated, it drives the clamping mechanism 54 to move up and down or away from the working platform 2, thereby tightening the transfer film.

[0065] Specifically, the mounting frame 55 includes a support portion and a connecting portion for connecting to the frame 1. The support portion is perpendicular to the connecting portion, and a support tube 57 is provided at the other end of the support portion corresponding to the clamping block 542. That is, when the transfer film is tightened, the edge of the transfer film is supported on the support tube 57, preventing the transfer film from breaking during the tightening process. In addition, a support tube is also provided between the working platform 2 and the film cutting mechanism 6 to ensure that all four sides of the transfer film are supported on the support tube.

[0066] In this embodiment, if the clamping mechanism 54 achieves tension by moving up and down during tensioning, the tensioning cylinder 56 is disposed at the connecting part; if the clamping mechanism 54 achieves tension by moving laterally during tensioning, the tensioning cylinder 56 is disposed at the supporting part. Alternatively, the mounting bracket 55 can also be formed by splicing two mounting bracket bodies, both of which are L-shaped. The tensioning cylinder 56 is disposed on one of the mounting bracket bodies, and the clamping mechanism 54 and the limit switch 58 are disposed on the other mounting bracket body (e.g., ...). Figure 4 (As shown).

[0067] Meanwhile, the mounting bracket 55 is equipped with a limit switch 58 for detecting the travel of the clamping mechanism 54. When feeding the film, the film clamping and tensioning mechanism 5 needs to move upward to ensure that the transfer film can be accurately fed between the clamping block 542 and the clamping wall. After clamping the transfer film, the clamping mechanism 54 needs to move to achieve tensioning of the transfer film. By setting the limit switch 58, the travel of the clamping mechanism 54 can be monitored in real time to ensure the smooth operation of the work.

[0068] In this embodiment, the clamping seat 541 includes a clamping plate 5411, a fourth fixing plate 5412, and a connecting plate 5413 connecting one end of the clamping plate 5411 and the fourth fixing plate 5412, with the clamping plate 5411 located directly above the fourth fixing plate 5412. The inner wall of the clamping plate 5411 is the clamping wall. The first driving mechanism is connected to either the fourth fixing plate 5412 or the connecting plate 5413. Specifically, if the clamping mechanism 54 achieves tension by moving up and down during tensioning, the tensioning cylinder 56 is connected to the fourth fixing plate 5412. This is mainly used when the clamping tensioning mechanism is located on both sides of the working platform 2. If the clamping mechanism 54 achieves tension by moving laterally during tensioning, the tensioning cylinder 56 is connected to the connecting plate 5413. Of course, when the clamping mechanism 54 is tightened, it is achieved by moving up and down. The tensioning cylinder 56 can also be connected to the connecting plate 5413, but a connecting seat 5c is still required. The first driving mechanism and the clamping seat 541 are connected through the connecting seat 5c. This is mainly used when the clamping tensioning mechanism 5 is located at the end of the working platform 2 (e.g., ...). Figure 4 (As shown).

[0069] In this embodiment, the second driving mechanism is a driving cylinder 59. The cylinder of the driving cylinder 59 is connected to the outer wall of the fourth fixed plate 5412, and the telescopic rod of the driving cylinder 59 passes through the fourth fixed plate 5412 and is connected to the clamping block 542.

[0070] In this embodiment, a first protective film 5a is laid on the clamping wall, and a second protective film 5b is provided on the side of the clamping block 542 opposite to the first protective film 5a. That is, when the transfer film is clamped, the transfer film is located between the first protective film 5a and the second protective film 5b, which avoids damage to the transfer film and ensures the transfer effect.

[0071] like Figure 6-7 As shown, the unwinding mechanism 3 includes a mounting plate 31, an unwinding roller 32, a rack 33, a first lifting mechanism and a push-pull mechanism mounted on the mounting plate 31, which is mounted on the frame 1. The unwinding roller 32 includes a connecting part 321 and a supporting part 322 for mounting the roll material. The connecting part 321 is rotatably mounted on the mounting plate 31, and a first gear 34 is provided on the connecting part 321. The first lifting mechanism and the push-pull mechanism are both connected to the rack 33. The first lifting mechanism is used to drive the rack 33 to move up and down, and the push-pull mechanism is used to drive the rack 33 to engage or disengage with the first gear 34. The unwinding roller 32 can directly use an unwinding air shaft, or the supporting part can use an unwinding air shaft, to ensure the tension of the roll material.

[0072] The unwinding mechanism 3 rotatably mounts the connecting part 321 of the unwinding roller 32 onto the mounting plate 31. A first gear 34 is mounted on the connecting part 321, and both the first lifting mechanism and the push-pull mechanism are connected to a rack 33. During unwinding, the push-pull mechanism drives the rack 33 to disengage from the first gear 34, ensuring normal rotation and unwinding of the unwinding roller 32. When tensioning is required, the push-pull mechanism pushes the rack 33 to mesh with the first gear 34, while the first lifting cylinder 3b drives the rack 33 to rotate, causing the transfer film to tighten. When the transfer film is fully tightened, both the push-pull mechanism and the first lifting mechanism stop moving, and the unwinding roller 32 cannot rotate, effectively ensuring the tension of the transfer film during the transfer process and guaranteeing product quality. After the transfer is completed, both the first lifting mechanism and the push-pull mechanism move in opposite directions, separating the first gear 34 from the rack 33, and the unwinding roller 32 resumes its unwinding function.

[0073] In this embodiment, two bearing seats 35 are provided opposite each other on the mounting plate 41. Each bearing seat 35 contains a bearing, and the connecting part 321 connects the two bearings, thereby ensuring the rotation of the connecting part 321. Simultaneously, to prevent the connecting part 321 from detaching from the bearing seat 35, a fixing ring 36 is provided at the end of the connecting part 321 away from the supporting part 322. The fixing ring 36 abuts against the outer wall of the bearing seat 35 away from the supporting part 322. The connecting part 321 and the supporting part 322 are coaxially arranged, and the supporting part 322 has a larger diameter. Therefore, the end of the supporting part 322 connected to the connecting part 321 abuts against the outer wall of the other bearing seat 35. Thus, under the action of the fixing ring 36 and the supporting part 322, the connecting part 321 is completely confined between the two bearing seats 35, preventing the unwinding roller 32 from separating from the bearing seat 35.

[0074] Specifically, the fixing ring 36 abuts against the steel sleeve, and the steel sleeve abuts against the inner ring of the bearing in the bearing housing, so that the unwinding roller 32 is limited and will not move back and forth during rotation.

[0075] In this embodiment, the rack 33 is provided with a drive plate 37, and the drive plate 37 has a drive hole 371 extending vertically, that is, the drive hole 371 is waist-shaped and arranged vertically. The first lifting mechanism is connected to the lower end of the drive plate 37, and the push-pull mechanism is connected to the drive hole 371. That is, the push-pull mechanism does not move in the vertical direction. When the first lifting mechanism drives the drive plate 37 to move the rack 33 up and down, the push-pull mechanism will not interfere with the up and down movement of the rack 33 because it is connected to the drive hole 371. When the push-pull mechanism needs to drive the rack 33 to move, the push-pull mechanism pushes and pulls the inner wall of the drive hole 371, so that the rack 33 moves along the width direction of the drive hole 371.

[0076] In this embodiment, the first lifting mechanism is a first lifting cylinder 3b. The cylinder barrel of the first lifting cylinder 3b is connected to the mounting plate 31, and the telescopic rod of the first lifting cylinder 3b is connected to the drive plate 37. Specifically, the mounting plate 31 is provided with a mounting hole, and a first mounting seat 38 is provided in the mounting hole. The cylinder barrel of the first lifting cylinder 3b is connected to the first mounting seat 38, and the telescopic rod of the first lifting cylinder 3b passes through the mounting hole and connects to the drive plate 37.

[0077] In this embodiment, the push-pull mechanism is a push-pull cylinder 3c. The cylinder barrel of the push-pull cylinder 3c is connected to the mounting plate 31. A push-pull shaft 39 is connected to the telescopic rod of the push-pull cylinder 3c. The push-pull shaft 39 is inserted into the drive hole 371, and the axis of the push-pull shaft 39 is perpendicular to the extension direction of the drive hole 371. The push-pull shaft 39 pushes the rack 33 to move. In specific installation, a seat plate is connected to the telescopic rod of the push-pull cylinder 3c. Connecting rods are respectively provided at both ends of the other side of the seat plate, and the two ends of the push-pull shaft 39 are respectively connected to the connecting rods. At the same time, a second mounting seat 3a is provided on one side of the mounting plate 31, and the cylinder barrel of the push-pull cylinder 3c is fixed on the second mounting seat 3a.

[0078] like Figure 8-9 As shown, in this embodiment, the film cutting mechanism 6 includes a second lifting mechanism disposed opposite to both sides of the frame 1. The second lifting mechanism is provided with a heating wire fixing seat 62, and a heating wire 66 is connected between the two heating wire fixing seats 62. The two ends of the heating wire 66 are connected to a power source for heating. The heating wire fixing seat 62 is also provided with a tensioning mechanism for tightening the heating wire 66.

[0079] The film cutting mechanism 6 of the present invention includes a second lifting mechanism on both sides of the frame 1, a heating wire fixing seat 62 on the second lifting mechanism, and a heating wire 66 connected between the two heating wire fixing seats 62. A tensioning mechanism for tightening the heating wire 66 is also provided on the heating wire fixing seat 62. After installation, the heating wire 66 is kept horizontally taut under the action of the tensioning mechanism. When cutting the film, the heating wire 66 is heated first, and then the second lifting mechanism moves the heating wire 66 upward to cut the transfer film. Since the heating wire melting and cutting method is used, the transfer film will not tear during the cutting process, ensuring a neat cut and avoiding waste caused by unevenly cut transfer film, thus ensuring transfer efficiency.

[0080] In this embodiment, the second lifting mechanism is preferably a second lifting cylinder 61. The cylinder of the second lifting cylinder 61 is connected to the frame 1, and the telescopic rod of the second lifting cylinder 61 is connected to the heating wire fixing seat 62. The heating wire fixing seat 62 includes a connecting rod 63 and a fixing rod 64 that are perpendicularly connected. The other end of the connecting rod 63 is connected to the second lifting mechanism, the heating wire 66 is connected to the other end of the fixing rod 64, and the tensioning mechanism is disposed on the fixing rod 64.

[0081] Specifically, the fixing rod 64 is provided with mounting holes 641, and the heating wire 66 passes through the mounting holes 641. Simultaneously, one end of the fixing rod 64 connected to the connecting rod 63 is provided with a connecting seat, and the heating wire 66 is fixed by the connecting seat after passing through the two mounting holes 641. The tensioning mechanism is a tension spring 65, one end of which is connected to the fixing rod 64, and the other end is connected to the heating wire 66. During installation, both ends of the heating wire 66 pass through the mounting holes 641 respectively, are then fixed to the connecting seat, and then both ends are connected to a power source. Finally, the tension spring 65 is connected.

[0082] In this embodiment, the connecting rod 63 includes a first connecting portion 631 and a second connecting portion 632. The width of the first connecting portion 631 is greater than the width of the second connecting portion 632, and the thickness of the first connecting portion 631 is less than the thickness of the second connecting portion 632. The second lifting mechanism is connected to the lower surface of the first connecting portion 631. The larger width of the first connecting portion 631 ensures the stability of the connection. The other end of the second connecting portion 632 is connected to the fixing rod 64 and has the same thickness as the fixing rod 64, ensuring the aesthetics of the connection. Simultaneously, the smaller width of the second connecting portion 632 reduces the overall weight.

[0083] like Figure 10-12 As shown, in this embodiment, the film feeding mechanism 9 is mounted on the bearing seats 84 of the transfer roller a, and is mounted on both bearing seats 84. The transfer roller a can move laterally. The film feeding mechanism 9 includes a clamping mechanism, a connecting plate 93, and a fourth lifting mechanism mounted on the bearing seats 84. The connecting plate 93 includes a driving end and a film clamping end. The driving end is connected to the fourth lifting mechanism. The film clamping end is provided with a cooperating first clamp 94 and a second clamp 95. The clamping mechanism is used to drive the second clamp 95 to move toward or away from the first clamp 94.

[0084] The film feeding mechanism 9 of this invention is mounted on the bearing seat 84 of the transfer roller a, allowing the transfer roller a to move laterally. A connecting plate 93 is mounted on the bearing seat 84 and connected via a fourth lifting mechanism. A first clamp 94 and a second clamp 95 are fitted at the other end of the connecting plate 93. A clamping mechanism drives the second clamp 95 to move towards or away from the first clamp 94. When film feeding is required, the two sides of one end of the transfer film are placed between the corresponding first clamp 94 and second clamp 95. Then, the clamping mechanism drives the second clamp 95 towards the first clamp 94 to clamp the transfer film. The film feeding mechanism then moves with the transfer roller a away from the unwinding mechanism until the transfer film completely covers the substrate, thus achieving automatic film feeding. Furthermore, because both sides of one end of the transfer film are clamped simultaneously during film feeding, uniform force is ensured on both sides of the transfer film, preventing wrinkling during feeding and guaranteeing the transfer effect.

[0085] Once the transfer film completely covers the substrate, the film clamping mechanism 5 clamps the transfer film, and then the first chuck 94 and the second chuck 95 of the film feeding mechanism 9 release the transfer film, and the transfer roller a performs the transfer.

[0086] In this embodiment, the fourth lifting mechanism is a third lifting cylinder 96. The cylinder barrel of the third lifting cylinder 96 is connected to the bearing seat 984, and the telescopic rod of the third lifting cylinder 96 is connected to the drive end. Specifically, a first fixing plate 97 is connected to the telescopic rod of the third lifting cylinder 96, and a second fixing plate 9a is connected to the drive end. The first fixing plate 97 and the second fixing plate 9a are bolted together. This connection method between the first fixing plate 97 and the second fixing plate 9a increases the connection area between the third lifting cylinder 96 and the connecting plate 93, ensuring the stability of the connection. The second fixing plate 9a and the connecting plate 93 can also be integrally formed.

[0087] In this embodiment, the clamping mechanism is a clamping cylinder 98. The cylinder barrel of the clamping cylinder 98 is connected to the connecting plate 93, and the telescopic rod of the clamping cylinder 98 is connected to the second clamp 95. Specifically, the clamping end is provided with a mounting groove 931, and a third fixing plate 99 is provided on one side of the mounting groove 931. The cylinder barrel of the clamping cylinder 98 is connected to the mounting groove 931, and the first clamp 94 is connected to the third fixing plate 99. The first clamp 94 is L-shaped and includes a connecting part 941 and a clamping part 942. The connecting part 941 is connected to the third fixing plate 99, and the clamping part 942 cooperates with the second clamp 95 to clamp the transfer film.

[0088] like Figure 13As shown, the film suction mechanism 7 is mounted on the frame 1 and located between the unwinding mechanism 3 and the film cutting mechanism 6. It includes a third lifting mechanism that is disposed opposite to each other on both sides of the frame 1. The third lifting mechanism is provided with a suction cup fixing seat 72, and the suction cup fixing seat 72 is provided with a suction cup 75 for adsorbing the transfer film.

[0089] The film suction mechanism 7 is positioned between the unwinding mechanism 3 and the film cutting mechanism 6. It also includes a third lifting mechanism with a suction cup fixing seat 72. The suction cup fixing seat 72 has a suction cup 75 for adsorbing the transfer film. When the transfer is completed and film cutting is required, the third lifting mechanism drives the suction cup 75 to move upward and hold the transfer film. At the same time, under the action of the film clamping and tightening mechanism, the film to be cut is fully tightened in the vertical direction, preventing the transfer film from falling at the film cutting mechanism position, ensuring smooth film cutting, and avoiding waste caused by cutting unused transfer film.

[0090] After the cutting is completed, the suction cup 75 detaches from the transfer film and descends under the action of the third lifting mechanism.

[0091] In this embodiment, the third lifting mechanism is preferably a fourth lifting cylinder 71. The cylinder barrel of the fourth lifting cylinder 71 is connected to the frame 1, and the telescopic rod of the fourth lifting cylinder 71 is connected to the suction cup fixing seat 72. Meanwhile, to facilitate the connection between the fourth lifting cylinder 71 and the frame 1, a cylinder fixing seat 73 can be provided on the frame 1, and the cylinder barrel of the fourth lifting cylinder 71 can be directly connected to the cylinder fixing seat 73.

[0092] In this embodiment, to further clamp the transfer film and improve the film cutting effect, a support tube 74 is connected between the two suction cup fixing seats 72. That is, the two suction cups 75 adsorb the edges of the transfer film, and the support tube 74 supports the middle of the transfer film, thereby preventing the transfer film from sagging between the two suction cups 75 and further ensuring the clamping effect, thus improving the film cutting effect. At the same time, to prevent the support tube 75 from damaging the surface of the transfer film, the support tube 75 includes a support surface. The support surface is horizontal. Specifically, the support tube 75 can be set as a square column, simply made of square tubing, with the upper surface of the square tubing serving as the support surface. This method is simple and convenient. Alternatively, the support surface can be set as an arc shape, directly made of round tubing.

[0093] In this embodiment, the suction cup mounting base 72 includes a connecting rod 721 and a mounting rod 722. One end of the connecting rod 721 is connected to the fourth lifting cylinder 71, and the other end of the connecting rod 721 is connected to the support tube 74. One end of the mounting rod 722 is connected to the middle of one side of the connecting rod 721, that is, the connecting rod 721 and the mounting rod 722 form a T-shape. The suction cup 75 is disposed on the upper surface of the other end of the mounting rod 722.

[0094] like Figure 13-14 As shown, in this embodiment, the lifting and moving mechanism 8 includes two rack guide rails 81 symmetrically arranged on both sides of the frame 1, and two drive components arranged in a one-to-one correspondence with the two rack guide rails 81;

[0095] The drive assembly includes a mounting frame 82, on which a lead screw 83 and a first power mechanism for driving the lead screw 83 to rotate are mounted. A bearing seat 84 is connected to the upper end of the lead screw 83, and a transfer roller a is connected between the two bearing seats 84. The rotation of the lead screw 83 is driven by the first power mechanism, thereby raising and lowering the transfer roller a. The mounting frame 82 also has a second gear 86 that meshes with the rack and pinion guide rail 81. The second gear 86 is driven to rotate by the second power mechanism, thereby moving the second gear 86 along the rack and pinion guide rail 81, thereby translating the transfer roller a.

[0096] The lifting and moving mechanism 8 of the present invention uses a lead screw 83 connected to bearing seats 84 on the mounting frame 82 of the drive assembly. A transfer roller a is connected between the two bearing seats 84. The lifting and lowering of the transfer roller a is achieved by the rotation of the lead screw 83. Due to the high precision of the lead screw 83, the stability of the lifting and lowering of the transfer roller a is ensured. Simultaneously, a second gear 86 meshing with a rack and pinion guide rail 81 is provided on the mounting frame 82. The second gear 86 is driven to rotate by a second motor mechanism. Since the two rack and pinion guide rails 81 are symmetrically arranged on both sides of the frame 1, and the two drive assemblies are correspondingly arranged one-to-one with the two rack and pinion guide rails 81, the symmetry of the driving force at both ends of the transfer roller a is ensured, and the two ends of the transfer roller a will always move synchronously. Furthermore, since the transfer roller a moves along the rack and pinion guide rail 81 during its movement, no positional deviation occurs during its movement, thus effectively ensuring the stability of the transfer roller a's movement and guaranteeing the transfer effect.

[0097] In this embodiment, the rack guide rail 81 includes a plane and a toothed surface arranged opposite to each other, with the toothed surface located below the plane. A slider 87 is provided on the mounting bracket 28, and the slider 87 slides against the plane. The second gear 86 is located inside the slider 87. When the second gear 86 rotates, it moves along the rack guide rail 81, and the slider 87 drives the mounting bracket 82 to move, thereby realizing the movement of the transfer roller a. To ensure the stability of the movement, multiple second gears 86 can be provided inside the slider 87, such as two second gears 86 at the front and two at the back of the slider 87. All second gears 86 are rotatably connected to the side wall of the slider 87, and one of the second gears 86 is connected to the second power mechanism.

[0098] In this embodiment, to further ensure the stability of the transfer roller a's movement, the slider 87 is provided with a groove extending to both ends. The groove is fitted onto the rack guide rail 81, and the upper inner wall of the groove slides against the plane. When the second gear 86 moves along the tooth surface of the rack guide rail 81, the groove slides along the plane of the rack guide rail 81, ensuring the overall stability of the slider 87's movement. Simultaneously, a limiting strip 88 is provided on the plane, and the slider 87 is provided with a limiting groove communicating with the groove. The two sides of the limiting strip 88 are in contact with the two inner walls of the limiting groove. That is, when the slider 87 slides along the plane, it is also limited by the limiting strip 88, ensuring that the slider 87 can only move along the length direction of the rack guide rail 81. Thus, with the cooperation of the second gear 86 and the rack guide rail 81, combined with the effects of the groove and the limiting strip, the overall movement of the mounting frame 82 has good stability, effectively ensuring the transfer effect of the product.

[0099] Please see the appendix Figure 15In this embodiment, the first power mechanism includes a first driving pulley 812 and a first driven pulley 813 rotatably connected to the mounting bracket 82. A first belt connects the first driving pulley 812 and the first driven pulley 813. The first driving pulley 812 is connected to a first motor 814, and the first driven pulley 813 is connected to the lead screw 83. That is, the first motor 814 drives the first driving pulley 812 to rotate, the first driving pulley 812 drives the first driven pulley 813 to rotate via the first belt, and the first driven pulley 813 drives the lead screw 83 to rotate. Specifically, a worm gear 815 is connected to the center of the first driven pulley 813, and a rotating drum 816 is threaded onto the lead screw 83. The rotating drum 816 is provided with a turbine 817 that cooperates with the worm gear 815. When the first passive pulley 813 rotates, it drives the worm gear 815 to rotate, and the worm gear 815 drives the rotating drum 816 to rotate. Since the rotating drum 816 is threadedly connected to the lead screw 83 and the rotating drum 816 does not move up and down, the lead screw 83 rises and falls, thereby realizing the lifting and lowering movement of the transfer roller a driven by the bearing seat 84.

[0100] In addition, to ensure the stability and accuracy of the movement of the bearing housing 84, guide cylinders 821 are respectively provided on both sides of the lead screw 83 on the mounting bracket 82. Guide rods 822 are inserted into the guide cylinders 821, and the upper ends of the guide rods 822 are connected to the bearing housing 84. That is, the lead screw 83 is positioned between the two guide rods 822, and the lifting and lowering of the lead screw 83 is guided by the guide rods 822, ensuring the stability and accuracy of the lead screw 83 driving the bearing housing 84 to lift and lower.

[0101] In this embodiment, the second power mechanism includes a second driving pulley 818 and a second driven pulley 819 rotatably connected to the mounting bracket 82. A second belt connects the second driving pulley 818 and the second driven pulley 819. The second driving pulley 818 is connected to a second motor 820, and the second driven pulley 819 is connected to a second gear 86 via a connecting shaft. The rotation of the second motor 820 drives the second driving pulley 818 to rotate, which in turn drives the second driven pulley 819 to rotate via the second belt. The second driven pulley 819 then drives the second gear 86 to rotate.

[0102] Furthermore, to integrate the two drive components into a single unit and further improve the stability of the transfer roller a's movement, connecting rods 89 are connected between the two first motors 814 and between the two second motors 820. To ensure the stability of the connecting rods 89 themselves, a connecting frame 810 is connected between the two mounting brackets 82. The connecting frame 810 has connecting ears 811, and the middle portion of the connecting rod 89 is connected to the connecting ears 811, thus forming a single unit at the lower ends of the two drive components. The upper ends of the two drive components are connected via the transfer roller a, further enhancing the stability of the transfer roller a's movement.

[0103] like Figure 17-18 As shown, the printhead carriage 41 is equipped with an electrostatic eliminator 47, which can eliminate static electricity on the printhead carriage 41 to prevent static electricity from affecting the ink and powder, thereby ensuring printing effect and quality. Simultaneously, an anti-collision mechanism, such as a photoelectric sensor, can be installed on the printhead carriage 41 to prevent collisions during movement.

[0104] The printing mechanism 42 is used for printing and is an existing structure, which will not be described in detail here. However, its printhead is equipped with a printhead adjustment mechanism. The main adjustment components include an internal hex screw, an adjustment bracket, a printhead fixing frame, a No. 1 steel ball, a No. 2 steel ball, and a ball plunger. When adjusting the printhead, the internal hex screw needs to be turned down to press or release the No. 1 steel ball (the bottom of the No. 1 steel ball has a spring). At this time, the No. 2 steel ball will press against or release the printhead. Then, the steel ball of the ball plunger, which adjusts the direction, will make the printhead move slightly left, right, forward and backward, so as to achieve the effect of adjusting and fixing the printhead.

[0105] The printhead carriage 41 is made of carbon fiber. Existing digital printing press printhead carriages are assembled from aluminum plates, steel plates, sheet metal, and other metal materials, which not only results in high weight (most exceeding 50KG) but also introduces assembly precision errors. Due to the high weight and large inertia, the guide rail sliders and drive devices experience significant wear, leading to slow printing speeds, poor precision, and a rapid decrease in printing precision over time. This multi-functional digital printing press printhead carriage 41 is primarily composed of carbon fiber. The internal body of the printhead carriage 41 is integrally molded from carbon fiber, as is the upper part of the carriage with a carbon fiber cover. The outer shell of the printhead carriage 41 is also integrally molded from carbon fiber. Compared to existing digital printing press printhead carriages, our all-carbon fiber integrated printhead carriage weighs less than 5KG, features ultra-high precision molding, and eliminates assembly precision errors. Its weight is approximately 1 / 10 of that of traditional metal printhead carriages, resulting in extremely low motion inertia and less wear on the guide rail sliders and drive devices, ultimately achieving high-speed, high-precision inkjet printing.

[0106] Based on the aforementioned technical features, the digital printing press inkjet assembly integrates powder application mechanisms 43 on both sides of the inkjet printing mechanism 42 on the printhead carriage 41. This integration of powder application mechanisms 43 with the inkjet printing assembly not only ensures better printing results but also simplifies the printing process. Furthermore, because it eliminates the need for repeated positioning, it can be applied to the printing of various products.

[0107] In this embodiment, since the powder-spraying mechanism 43 is installed on the nozzle carriage 41, the drive of the powder-spraying mechanism 43 and the nozzle carriage 41 are shared. The powder-spraying mechanism 43 is arranged on the left and right sides of the nozzle carriage 41, with multiple powder-spraying mechanisms 43 on each side (the number of powder-spraying mechanisms 43 can be increased or decreased according to actual needs). The powder used by each powder-spraying mechanism 43 can be the same or different. First, the nozzle carriage 41 moves from left to right and from right to left along the X-axis on the marble crossbeam, thereby spraying a layer of varnish onto the substrate (the varnish can be sprayed thicker to make the product appear three-dimensional). In the area where the varnish has been sprayed, the powder-spraying mechanisms 43 on the left and right sides of the nozzle carriage 41 spray powder behind the nozzle that sprayed the varnish, sprinkling various glitter powders on the area where the varnish was sprayed. Excess dust will be sucked away.

[0108] In addition to the powder-spraying mechanism 43 itself, the work platform 2 is equipped with many suction holes to remove excess dust. These suction holes are connected to duct fans, and each duct fan is connected to a dust collection bag. During the powder-spraying process, some of the excess dust is sucked away by the powder-spraying mechanism 43, while some of it will fall onto the work platform 2 through the gaps between the substrates. At this time, the duct fans will suck away the glitter that has fallen onto the work platform 2, thus keeping the work surface free of excess glitter.

[0109] like Figure 19 In this embodiment, to ensure the powder-spreading effect, the powder-spreading mechanism 43 can be made to translate in the longitudinal direction, thereby forming a wave-shaped powder-spreading effect. Specifically, the nozzle carriage 41 is provided with a mounting plate 48 inside, and a lead screw motor 49 and a guide rail 410 are provided on the mounting plate 48. The guide rail 410 is parallel to the lead screw of the lead screw motor 49, and a sliding block is slidably connected to the guide rail 410. The sliding block and the lead screw seat are connected to the sliding block, and the sliding plate is connected to the powder-spreading mechanism. When the lead screw motor 49 is started, the powder-spreading mechanism 43 moves.

[0110] like Figure 20As shown, each side of the printing mechanism 42 has multiple powder-spraying mechanisms 43, which are arranged in a rectangular array. Combined with the movement of the powder-spraying mechanisms 43 driven by the printhead carriage 41 and the arrangement of the powder-spraying mechanisms themselves, the powder-spraying mechanisms 43 can achieve a beautiful three-dimensional spatial effect on the substrate. This is achieved by combining multiple sprays of varnish with different powder-spraying methods to create a variety of visual effects. We will illustrate this with an example of four powder-spraying mechanisms 43 on one side of the printhead carriage 41:

[0111] Implementation process: First, the printhead carriage 41 sprays a layer of varnish onto the substrate (the thickness depends on the application). Then, the powder dispensing mechanism 43 sprinkles glitter powder. The powder dispensing method can be varied, with different powders being used each time. The four powder dispensing mechanisms 43 on one side of the printhead carriage 41 can achieve four scans and prints, each time dispensing a different powder, allowing for any combination. It can also achieve a single scan and print, dispensing two or more types of powder side-by-side, for example... Figure 6 Multiple rows of powder are applied side-by-side, such as ① and ②, ① and ④, ② and ③, ③ and ④, to achieve a layered effect on the product, creating a multi-layered, three-dimensional effect. For example, after scanning and printing the first pass of varnish (UV resin, transfer adhesive, hot stamping varnish), a base layer of powder (which can be various combinations) is applied. Then, by increasing the ink volume of the varnish printhead, a thicker layer of varnish is applied after the first layer, followed by more powder. This multi-layered powder application, which can involve two or three layers, creates a three-dimensional effect. In the varnish printing area, because the printhead's printing area is wider, the powder application area is relatively larger than the printing area. The varnish area is relatively narrow. As the carriage moves from left to right, the first area is printed. Simultaneously, the powder-spreading mechanism spreads powder to the left rear of the varnish area. When the carriage reaches the far right, the first area's printing and powder spreading are complete and cured by the UV lamp. At this point, the marble beam moves a certain distance along the Y-axis. Then, the carriage moves from left to right again to print varnish. The second area of ​​varnish will then cover the powder-spreading area from the first area. This cyclical printing and powder spreading creates layers of specially formulated powders, resulting in a three-dimensional effect. The powder exists within this space, creating a beautiful effect. The powder-spreading mechanism 43 can alternately or simultaneously spread powder, allowing for more diverse and aesthetically pleasing effects on the substrate surface.

[0112] like Figure 21-22 As shown, in this embodiment, the powder spreading mechanism 43 includes a powder storage tank 431, a stirring brush 432, and a fourth driving mechanism. The lower end of the powder storage tank 431 is provided with a powder spraying head assembly. The stirring brush 432 is disposed inside the powder storage tank 431 corresponding to the powder spraying head assembly. The fourth driving mechanism is used to drive the stirring brush 432 to rotate.

[0113] The powder storage tank 431 is also connected to an air pipe connector 435, which is used to connect an air source to drive the powder to be sprayed out by the powder spraying head assembly. Specifically, the air pipe connector 45 is connected to an air source, and gas is blown through the air pipe connector 435 to create a positive pressure inside the powder storage tank 431, so that the powder particles are sprayed out by the powder spraying head under air pressure.

[0114] By setting a stirring brush 432 inside the powder storage tank 431 corresponding to the powder spraying head assembly, and driving the stirring brush 432 to rotate through the fourth drive mechanism, during the powder spraying process, the air pipe connector 435 connects to the air source to drive the powder to be sprayed out from the powder spraying head assembly to achieve powder spraying. At the same time, the stirring brush 432 sweeps the powder spraying head assembly, avoiding the situation of clogging the powder spraying head assembly during the powder spraying process, thus ensuring product quality.

[0115] In this embodiment, the powder storage tank 431 has a circular cross-section and an opening at its upper end. A top cover 433 is threaded onto the opening, meaning the top cover 433 is detachably connected to the powder storage tank 431. When powder needs to be added, the top cover 433 can be opened, and after adding powder, the top cover 433 can be closed. The air pipe connector 435 is also located on the top cover 433.

[0116] In this embodiment, the fourth driving mechanism is a rotary motor 434. The rotary motor 434 is disposed inside the powder storage tank 431. Specifically, a rotary motor support plate 436 is provided inside the upper cover 433 and between the inner wall of the upper cover 433 and the powder storage tank 431. The middle part of the rotary motor support plate 436 has a hole for air entry corresponding to the air pipe connector 435. A rotary motor fixing plate 437 is provided inside the powder storage tank 431 corresponding to the rotary motor support plate 436. The rotary motor support plate 436 and the rotary motor fixing plate 437 are connected by studs 438, and the rotary motor 434 is fixed on the rotary motor fixing plate 437. The output shaft of the rotary motor 434 is connected to the stirring brush 432. Specifically, the output shaft of the rotary motor 434 is connected to a rotating shaft through a coupling, and the other end of the rotating shaft is connected to the stirring brush 432. Meanwhile, a sealing sleeve can be provided between the upper cover 433 and the powder storage tank 431, and the rotating motor support plate 436 is inserted into the sealing sleeve, which not only ensures the sealing between the upper cover 433 and the powder storage tank 431, but also facilitates the installation of the rotating motor support plate 436.

[0117] In addition, since the air pipe connector 435 is also located on the upper cover 433, and the rotating motor 434 is located inside the powder storage tank 431, in order to prevent the rotating motor 434 from affecting the air entering the powder storage tank 431 through the air pipe connector 435, the length of the stud 438 should be greater than the length of the rotating motor 434, so that there is a gap between the bottom of the rotating motor 434 and the rotating motor support plate 436, which does not affect the entry of air.

[0118] In this embodiment, a powder suction pipe 439 is provided on the outer wall of the lower end of the powder storage tank 431. The powder spraying head assembly is disposed inside the powder suction pipe 439. When the powder spraying head assembly sprays powder, the powder is sprayed from the lower end of the powder suction pipe 439 onto the substrate. The side wall of the powder suction pipe 439 is provided with a powder discharge port 4310 to discharge excess powder. The powder suction pipe 439 is mainly designed for printing machines with printing components. Since printing and powder spraying are performed on one machine, excess dust may contaminate the printing components and clog the printheads during powder spraying. This application addresses this by providing the powder suction pipe 439 and connecting the powder discharge port 4310 to an air suction device, thereby removing excess dust, preventing dust contamination of the printheads, and ensuring printing quality.

[0119] In this embodiment, the powder spraying head assembly includes a coaxially arranged lower cover 4311, a powder spraying tube 4312, a powder spraying head 4313, and a powder sieve 4314. The lower cover 4311 is connected to the powder storage tank 431. One end of the powder spraying tube 4312 passes through the lower cover 4311 and communicates with the inside of the powder storage tank 4311. The powder spraying head 4313 covers the other end of the powder spraying tube 4312. The powder sieve 4314 is disposed inside the powder spraying head 4313 and is located between the inner wall of the powder spraying head 4313 and the powder spraying tube 4312. The stirring brush 432 is disposed inside the powder spraying tube 4312. During powder application, under the action of positive gas pressure, the powder enters the powder spraying tube 4312 from the powder storage tank 431, and then passes through the powder sieve 4314 and is sprayed out from the powder spraying head 4313. The aperture of the powder sieve 4314 can be selected as needed to ensure the powder application effect. The powder spraying head 4313 and the powder spraying tube 4312 are connected by threads. When it is necessary to replace the different powder screen 4314, only the powder spraying head 4313 needs to be disassembled.

[0120] In addition, to ensure the sealing between the powder spraying head assembly and the powder storage tank 431 and the connection stability between the powder spraying pipe 4312 and the lower cover 4311, the lower cover 4311 includes a cover body and a ring protruding from the edge of the cover body. The ring is threaded to the powder storage tank 431, and a sealing gasket 4315 is provided between the cover body and the powder storage tank 431. The inside of the cover body is provided with a flange nut 4316 and a sealing ring 4317. The powder spraying pipe 4312 is threaded to the flange nut 4316, and the sealing ring 4317 fits against the flange nut 4316 and is located between the flange nut 4316 and the sealing gasket 4315.

[0121] In addition, a sealing ring can also be provided between the flange nut 4316 and the powder spraying mesh 4314 to ensure the overall sealing performance.

[0122] In this embodiment, each end of the crossbeam g is provided with a slide block b. A third driving mechanism is connected to each slide block b to drive its movement. Specifically, the third driving mechanism includes a longitudinal sliding screw threadedly connected to the slide block b, a third driving pulley c connected thereto, and a longitudinal driving motor. One end of the longitudinal sliding screw is connected to a third driven pulley d. The third driving pulley c and the two third driven pulleys d are connected by a third belt e. When the longitudinal driving motor starts, it drives the third driving pulley c to rotate. The third driving pulley c drives the two third driven pulleys d to rotate via the third belt e. The two third driven pulleys d respectively drive the corresponding longitudinal sliding screw to rotate, thereby realizing the longitudinal movement of the crossbeam g by the two slide blocks b. Furthermore, to facilitate the lateral movement of the nozzle carriage 41 relative to the crossbeam g, a linear motor is provided on the crossbeam g. The worktable of the linear motor is connected to the slider 45, thereby driving the lateral movement of the nozzle carriage 41 through the linear motor.

[0123] In this embodiment, the frame 1 is equipped with an installation platform f, and the installation platform f is connected to the frame 1 by a spring. The working platform 2 is supported on the installation platform f by an aluminum square tube, thereby giving the working platform 2 a certain buffering force. Furthermore, both the installation platform f and the crossbeam g are made of marble. This invention is applicable to the positioning printing of products such as mobile phone cases, power banks, artworks, hardware, decorations, and small commodities. First, when the marble installation platform f is installed on the frame 1, precise adjustments are made to ensure the marble is accurately installed on the frame 1, and the marble has high flatness accuracy. Standard aluminum square tubes are installed on the marble surface as supports for the working platform 2. The working platform 2 is machined from a high-precision ultra-flat plate. Then, high-precision positioning pins are assembled on the working platform 2 using positioning pin mounting fixtures to position the product fixtures. Different fixtures are made for different products, but the positioning height of the fixtures is uniform, thus ensuring a uniform printing surface height. Using a marble crossbeam g can prevent the crossbeam g from sagging or deforming, thereby ensuring the movement accuracy of the printhead assembly 4 and thus ensuring the printing effect.

[0124] This invention provides a multifunctional digital printing machine that combines printing with transfer printing (heat transfer and hot stamping are collectively referred to as transfer printing) and powder application. The transfer process first uses an inkjet printhead to scan or multi-pass print transfer varnish (UV resin, transfer adhesive, hot stamping varnish) onto the substrate. The UV lamp intensity is adjusted to achieve the desired curing degree of the varnish. Then, a transfer film is heated and pressed onto the substrate by a transfer roller a, transferring the layer from the transfer film onto the surface of the varnish (UV resin, transfer adhesive, hot stamping varnish). This allows for the application of multiple curved surfaces on the entire printing plate. For achieving perfect digital printing and transfer effects on products with significant height differences and complex shapes, this multi-functional digital printing machine features a four-sided tensioning mechanism for the transfer film. This mechanism uses air pressure to precisely control the tension on all four sides of the transfer film, ultimately solving the problem of wrinkling in digital printing and transfer films on products with multiple curved surfaces and significant height differences (existing transfer and hot stamping machines only use unidirectional tensioning). Furthermore, the height of the multiple positioning clamps on the entire printing plate is designed according to the different substrates, ensuring a uniform height of the highest surface after mounting on various substrates. This also ensures a consistent distance between the inkjet printhead and the entire printing plate. This invention achieves uniform printing precision and color effects across the entire printing plate, reaching the highest level of consistency. The powder application component, integrated with the inkjet printing component, integrates powder application and digital printing, enabling both printing and powder application. The powder application range and amount are controllable, and an air suction device removes excess dust to prevent contamination of the inkjet printing component and clogging of the printhead, thus preventing air pollution and achieving environmental protection. Through the combined use of transfer printing (heat transfer, hot stamping) and powder application, the patterns achieve greater realism and enhanced visual effects, allowing designers to incorporate more design elements into product design and ensuring accurate reproduction of the actual product. Based on existing colors, this invention adds electroplating, laser, and photolithographic texture effects, as well as special metallic colors such as gold and silver, and various transfer materials such as any pigments and powders that can be carried by the transfer film. It also incorporates various optical powders and special functional powders, including glitter powder, diamond powder, chameleon powder, fluorescent powder, UV-changing powder, thermochromic powder, reflective powder, luminescent powder, and magnetic cat-eye powder. Ultimately, the multi-functional digital printing machine of this invention achieves a myriad of digital inkjet printing effects. Multiple processes are integrated into one machine, ensuring precise printing position, unique effects, and simple operation. The positioning of this multi-functional digital printing machine is achieved through a high-precision ground marble platform and marble beam, a high-precision guide rail linear motor, a full carbon fiber printhead carriage, high-precision positioning pins, and a special positioning fixture and vacuum adsorption platform. This allows for the adsorption and positioning of various materials, including boards, fabrics, glass, metals, and other soft and hard flat materials, as well as various uneven materials and products of different sizes.This design enables positioning accuracy within 5 micrometers, and the frame structure composed of the marble platform and crossbeams ensures consistent accuracy within 5 micrometers for each machine. This guarantees high consistency in printing position, accuracy, color, and process effects for the same print file across different machines. Furthermore, the all-carbon fiber integrated printhead carriage weighs less than 5 kg, featuring ultra-high precision molding and eliminating assembly accuracy errors. Its weight is approximately 1 / 10 that of traditional metal printhead carriages, resulting in minimal inertia and less wear on the guide rails, sliders, and drive unit. This ultimately achieves high-speed, high-precision inkjet printing. By combining color printing, transfer printing, hot stamping, and powder coating, products can be made more realistic, enhancing visual appeal and increasing product variety, thereby improving production efficiency and the quality of digitally printed products.

[0125] The following are combinations of multiple processes.

[0126] 1. Print only color patterns

[0127] Implementation method: Substrate → Printer prints colored ink → UV lamp cures → Completed.

[0128] 2. Colored patterns + powdering process

[0129] Implementation methods: 1. Substrate → Printer sprays colored ink → UV lamp curing → Sprays varnish → Sprinkles powder onto the varnish on the substrate → Removes excess powder → UV curing → Powder application completed; 2. Substrate → Printer sprays colored ink → UV lamp curing → Sprays varnish → Sprinkles powder onto the varnish on the substrate → Removes excess powder → UV curing → Sprays varnish → Sprinkles powder again (powder application can be repeated, multi-layered, or parallel) → UV curing → Sprays varnish → UV curing → Powder application completed. The above process can be changed in sequence according to requirements to achieve a variety of visual effects.

[0130] 3. Colored patterns + transfer printing (heat transfer, hot stamping)

[0131] Implementation method: Substrate → Printer prints colored ink → UV lamp curing → Printer prints transfer varnish → Transfer process → Completed.

[0132] 4. Color pattern + powdering process + transfer printing (heat transfer, hot stamping) process

[0133] Implementation method: Substrate → Print color pattern → Print varnish pre-curing → Apply powder (use different powder application methods according to requirements) → Print varnish → UV lamp curing → Transfer (heat transfer or hot stamping) → Print varnish pre-curing → Apply powder → Print varnish → UV lamp curing → Complete.

[0134] 5. Powder application process + transfer printing (heat transfer, hot stamping) process

[0135] Implementation methods: Powder can be applied before transfer printing: substrate → spray varnish → apply powder to the substrate varnish → remove excess powder → UV curing lamp → spray transfer varnish → transfer process → completed; Alternatively, transfer printing can be done before applying powder: substrate → print transfer varnish → transfer process → spray varnish → apply powder to the substrate varnish → remove excess powder → UV curing lamp.

[0136] For ease of description, the present invention defines the film clamping and tensioning mechanism 5 located at one end of the working platform 2 as the left film clamping and tensioning mechanism, and the film clamping and tensioning mechanisms 5 on both sides of the working platform 2 as the front film clamping and tensioning mechanism and the rear film clamping and tensioning mechanism, respectively. Here, left, front, and rear are all based on the attached... Figure 1 The orientation is defined.

[0137] The working process of the digital printing press transfer component is as follows:

[0138] 1. After the marble beam is printed with varnish by a spray gun carriage, the varnish transfer is completed. Figure 1 The middle crossbeam Y-axis moving mechanism is driven to move to the rear of the Y-axis. The front clamping film tensioning mechanism, the rear clamping film tensioning mechanism, and the left clamping film tensioning mechanism are driven by cylinders to rise above the surface of the substrate, and the clamping mechanism 54 opens; 2. The transfer roller a is driven by Figure 1The lifting mechanism of the transfer (heat transfer, hot stamping) lifting and moving mechanism shown in the figure is raised to the highest point. Then, the lifting cylinder of the film feeding mechanism 9, which is fixed on the bearing seat 84 of the transfer roller a, lowers the chuck of the film feeding mechanism 9 to the lowest point and opens the chuck. 3. The film of the transfer film roll is placed between the chucks of the film feeding mechanism 9 and the chucks are clamped. 4. The film feeding mechanism 9, which is lowered to the lowest point and clamping the film, and the transfer roller a, which is raised to the highest point, are moved by the moving mechanism of the lifting and moving mechanism 8 (composed of a gear rack guide rail, a motor-driven pulley, and the pulley drives the gear to move along the X-axis of the rack) to send the film from the right side of the machine to the clamping mechanism 54 of the film clamping and tightening mechanism on the left side. At the same time, the two sides of the film enter the clamping machines of the front clamping and tightening mechanism and the rear clamping and tightening mechanism, respectively. Within mechanism 54, after the transfer (heat transfer, hot stamping) lifting and moving mechanism delivers the film to the clamping mechanism 54 of the front, rear, and left side film clamping and tightening mechanism, the front, rear, and left side film clamping and tightening mechanism 54 clamps the film. At the same time, the chuck of the film feeding mechanism 9 releases and moves a distance to the left along the transfer roller a until the center of the transfer roller a corresponds to the center of the four-sided film support tube 57 on the left side of the machine. Then, the front, rear, and left side film clamping and tightening mechanisms descend simultaneously, and the unwinding mechanism 3 on the right side of the machine rotates the transfer and hot stamping roll backward to tighten the film. After this action is completed, the film will cover the surface of the substrate very flat due to the support of the four-sided film support tube 57. 5. After the previous step is completed, the lifting mechanism 9 fixed on the transfer roller bearing seat 84... The cylinder raises the chuck, and then the lifting and moving mechanism 8 lowers the transfer roller a along with the film feeding mechanism 9 to the working surface to press the film; 6. The lifting and moving mechanism 8 then moves the transfer roller a from the left side of the X-axis to the right side to complete the product transfer (heat transfer, hot stamping); 7. After the transfer roller a completes the transfer (heat transfer, hot stamping), it needs to be raised to the highest point. Then, the front clamping and tightening mechanism, the rear clamping and tightening mechanism, and the left clamping and tightening mechanism simultaneously rise to the highest point. At this time, the front, rear, and left clamping and tightening mechanisms are at their highest points, but the clamping mechanism 54 is still in a clamping state. At the same time, the unwinding mechanism 3 is also released, and the film suction mechanism 7 rises. The suction cups 75 on the front and rear sides of the film suction mechanism 7 suck up the film, and the support tube 74 in the middle supports the film to prevent it from sagging in the middle. 8. After the film suction mechanism 7 suctions the film, the heating wire cutting mechanism 6 lifts and lowers to cut the film. After the heating wire cuts the film, it returns to its original position. At this time, the lifting cylinder of the film feeding mechanism 9, which has risen to the highest point, lowers the chuck to the lowest point. Then, the lifting and moving mechanism 8 drives the transfer roller a, connected to the film feeding mechanism 9, to move a distance to the right of the X-axis until the film enters the open chuck of the film feeding mechanism 9. Then the chuck clamps, the suction cup 75 of the film suction mechanism 7 releases, and the film suction mechanism 7 returns to the original point. Then, the lifting and moving mechanism 8 moves the transfer roller a, connected to the film feeding mechanism 9, to the right of the X-axis to the original point. When it reaches the original point, the transfer roller a returns to the original point, and at the same time, the lifting cylinder of the film feeding mechanism 9, which is clamping the film, raises the chuck to the highest point.9. At this point, the clamping mechanisms 54 of the front, rear, and left side film clamping and tightening mechanisms open. After the transferred film is removed, the front, rear, and left side film clamping and tightening mechanisms lower to the origin (below the working plane) and remove the transferred (heat transfer, hot stamping) product or proceed to the next process; 10. At this point, the product transfer (heat transfer, hot stamping) is completed; 11. When transferring (heat transfer, hot stamping) the second batch of products, the front, rear, and left side film clamping and tightening mechanisms rise to their highest point, clamping mechanism 54 is open, and then the transfer roller a, along with the film feeding mechanism 9, rises to its highest point. The lifting cylinder of the film feeding mechanism 9 lowers the clamping head of the film to its lowest point, and the lifting and moving mechanism 8 begins to move to the left of the X-axis to feed the film back into the clamps of the front, rear, and left side film clamping and tightening mechanisms. The process is the same as in 4-10 to complete the transfer (heat transfer, hot stamping), and this is a cyclical process.

[0139] The powder-spreading process on this multi-functional digital printing press differs from traditional powder-spreading processes. This powder-spreading mechanism is compact, provides even powder application, is intelligently controllable, and uses an air suction device to remove excess dust, preventing contamination of the printing components and clogging of the printhead, thus preventing air pollution and achieving environmental protection.

[0140] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A multi-function digital printer characterized by: The application relates to a printing machine, which comprises a rack, a working platform arranged on the rack, a crossbeam movably arranged on the rack, and a spraying head assembly movably arranged on the crossbeam. One end of the working platform is provided with a unwinding mechanism, both sides and the other end of the working platform are provided with film clamping and tensioning mechanisms, a film cutting mechanism is arranged between the working platform and the unwinding mechanism, a film sucking mechanism is arranged between the film cutting mechanism and the unwinding mechanism, and a transfer roller is arranged on the rack through a lifting moving mechanism. The spraying head assembly comprises a spraying head trolley and a printing mechanism arranged in the spraying head trolley, further comprises a powder scattering mechanism and a third driving mechanism, the powder scattering mechanism is arranged on both sides of the printing mechanism, a UV curing mechanism is arranged between the powder scattering mechanism and the printing mechanism, a sliding block for sliding connection with the crossbeam is arranged on the rear wall of the spraying head trolley, and the third driving mechanism is connected with the sliding block and used for driving the spraying head trolley to ascend and descend relative to the sliding block. The unwinding mechanism comprises a mounting plate, an unwinding roller, a rack, a first lifting mechanism arranged on the mounting plate and a push-pull mechanism, the unwinding roller comprises a connecting portion and a supporting portion for mounting a winding material, the connecting portion is rotatably arranged on the mounting plate, a first gear is arranged on the connecting portion, the first lifting mechanism and the push-pull mechanism are connected with the rack, the first lifting mechanism is used for driving the rack to move up and down, and the push-pull mechanism is used for driving the rack to mesh with or separate from the first gear. The film feeding mechanism comprises a clamping mechanism, a connecting plate and a fourth lifting mechanism arranged on the bearing seat, the connecting plate comprises a driving end and a film clamping end, the driving end is connected with the fourth lifting mechanism, the film clamping end is provided with a first clamp and a second clamp matched with each other, and the clamping mechanism is used for driving the second clamp to move towards or away from the first clamp.

2. The multi-functional digital printing machine according to claim 1, wherein: The film clamping and tensioning mechanism comprises a clamping mechanism and a first driving mechanism, the clamping mechanism comprises a clamping seat and a second driving mechanism arranged on the clamping seat, the clamping seat comprises a clamping wall, the inside of the clamping seat is provided with a clamping block, the second driving mechanism is used for driving the clamping block to move towards or away from the clamping wall, and the first driving mechanism is used for driving the clamping mechanism to move up and down or move towards or away from the working platform.

3. The multi-functional digital printing machine according to claim 2, wherein: The film clamping and tensioning mechanism further comprises a mounting frame for connecting the rack, the first driving mechanism is a tensioning cylinder, the cylinder barrel of the tensioning cylinder is connected with the mounting frame, and the telescopic rod of the tensioning cylinder is connected with the clamping mechanism. The mounting frame comprises a supporting portion and a connecting portion for connecting the rack, the supporting portion is arranged perpendicularly to the connecting portion, and the other end of the supporting portion is provided with a supporting rubber tube corresponding to the clamping block.

4. The multi-function digital printing machine according to any one of claims 1 to 3, characterized in that: The film cutting mechanism comprises second lifting mechanisms arranged on both sides of the rack, the second lifting mechanisms are provided with heating wire fixing seats, heating wires are connected between the two heating wire fixing seats, and the heating wire fixing seats are further provided with tensioning mechanisms for tensioning the heating wires.

5. The multi-functional digital printing machine according to any one of claims 1 to 3, characterized in that: The film suction mechanism comprises third lifting mechanisms oppositely arranged on both sides of the frame, and suction disc fixing seats are arranged on the third lifting mechanisms.

6. The multi-functional digital printing machine according to any one of claims 1 to 3, characterized in that: The lifting moving mechanism comprises two rack guides symmetrically arranged on both sides of the frame, and two driving assemblies are arranged in one-to-one correspondence with the two rack guides. The driving assembly comprises a mounting rack, a screw rod and a first power mechanism for driving the screw rod to rotate are arranged on the mounting rack, the upper end of the screw rod is connected with a bearing seat, and a transfer roller is connected between the two bearing seats; a second gear wheel engaged with the rack guide is further arranged on the mounting rack, and the second gear wheel is driven to rotate by a second power mechanism.

7. The multi-functional digital printing machine according to any one of claims 1 to 3, characterized in that: The powder scattering mechanism comprises a powder storage tank, a stirring brush and a fourth driving mechanism, the lower end of the powder storage tank is provided with a powder spraying head assembly, the stirring brush is arranged in the powder storage tank in correspondence with the powder spraying head assembly, and the fourth driving mechanism is used for driving the stirring brush to rotate. A gas pipe joint is further connected to the powder storage tank, and the gas pipe joint is used for connecting a gas source to drive the powder to be sprayed out of the powder spraying head assembly.

8. The multi-functional digital printing machine according to claim 7, wherein: The powder spraying head assembly comprises coaxially arranged lower cover, powder spraying pipe, powder spraying head and powder screening net, the lower cover is connected with the powder storage tank, one end of the powder spraying pipe penetrates through the lower cover and is connected with the inside of the powder storage tank in communication, the powder spraying head cover is arranged on the other end of the powder spraying pipe, the powder screening net is arranged in the inside of the powder spraying head and located between the inner wall of the powder spraying head and the powder spraying pipe, and the stirring brush is arranged in the powder spraying pipe.

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