Ink jet printing equipment

Abstract

The invention belongs to the technical field of printing equipment, and particularly relates to ink-jet printing equipment which is characterized in that the ink-jet printing equipment comprises a stretching mechanism, a plurality of vertical frames are fixedly arranged at the bottom of the stretching mechanism, and the stretching mechanism is used for tensioning and stretching a printing stock for ink-jet printing; and the driving mechanisms are arranged on the two sides of the stretching mechanism, and the driving mechanisms are used for providing power for the action of the stretching mechanism and conveying, pressing and positioning the printing stock. The weights of structures such as side rod blocks are vertically downward, so that the surfaces of the deflection cylinders extrude a printing stock to be tensioned, the tension of a plurality of tension springs acts on a surrounding cylinder to drive the structures such as two groups of middle rods, the deflection cylinders, an inner surrounding disc and an outer surrounding disc to rotate by taking the axial direction of the middle rods as the center, the printing stock is tensioned on the surfaces of the four deflection cylinders, and the printing stock is tensioned on the surfaces of the four deflection cylinders. And the printing stock is tensioned through triple tension generated by multiple structures, so that the advantage of clear printing is achieved.

Description

Technical Field

[0001] This invention relates to the field of printing equipment technology, and more particularly to an inkjet printing device. Background Technology

[0002] Inkjet printing, as a non-contact printing technology, has been widely used in many industries such as packaging printing, advertising production, textile printing, board processing, and paper printing due to its advantages such as high pattern reproduction, fast printing efficiency, and wide compatibility with various substrates.

[0003] As the printing industry continues to demand higher product precision, production efficiency, and equipment versatility, existing inkjet printing equipment can only achieve rigid tension in one direction. It cannot simultaneously ensure uniform tension in both the circumferential and radial directions of the substrate, leading to wrinkles, edge misalignment, or localized loosening of the substrate. This directly causes misregistration of the printed pattern and fails to meet the flatness requirements of high-precision printing. Therefore, there is an urgent need for a new inkjet printing device. Summary of the Invention

[0004] Based on the technical problems in the background art, the present invention proposes an inkjet printing device.

[0005] This invention proposes an inkjet printing device, comprising: a stretching mechanism, the bottom of which is fixedly provided with multiple vertical frames, the stretching mechanism being used to tension and stretch the substrate for inkjet printing; a driving mechanism, disposed on both sides of the stretching mechanism, the driving mechanism being used to provide power for the movement of the stretching mechanism and to realize the conveying and pressing positioning of the substrate; the stretching mechanism includes: a main shell, the bottom of which is fixedly provided on the top of multiple vertical frames, providing installation support and protection for the various components of the stretching mechanism; bearings, multiple bearings respectively passing through and fixedly disposed on the front and back of the main shell; intermediate rods, one end of multiple intermediate rods respectively rotatably passing through the front and back of the main shell via bearings; intermediate blocks, multiple intermediate blocks respectively fixedly disposed on the other end of multiple intermediate rods; and intermediate disks, two intermediate disks respectively fixedly disposed on... A push spring is fixedly mounted on the outer surface of the middle plate; one end of the push spring is fixedly mounted on the outer surface of the middle plate to provide elastic thrust, driving the side plate to make a linear movement away from the middle plate, thereby achieving elastic stretching of the substrate; the other end of the push spring is fixedly mounted on the outer surface of the side plate; a piston rod and a piston cylinder are fixedly mounted on the outer surfaces of the middle plate and the side plate, respectively, and cooperate with each other to guide the linear movement of the side plate, ensuring the straightness and stability of the movement; a side block is fixedly mounted on the outer surface of the side plate; a lifting rod is fixedly mounted through the middle of the side block; a deflecting cylinder is movably sleeved around the lifting rod; and two side rod blocks are movably sleeved inside the deflecting cylinder to fill the eccentric gap between the deflecting cylinder and the lifting rod.

[0006] Preferably, the tensioning mechanism further includes: a second bearing, multiple second bearings fixedly sleeved on the outer surface of the lifting rod; an inner circumferential plate, the middle of which is fixedly sleeved on the other end of the intermediate rod; an outer circumferential plate, which is fixedly sleeved on one end of the intermediate rod; a limiting edge, which is integrally formed and fixedly disposed on the side of the outer circumferential plate and the inner circumferential plate; a horizontal cylinder, the two ends of which are fixedly disposed on the outer surface of the two inner circumferential plates; and a surrounding cylinder, the two ends of multiple surrounding cylinders being fixedly disposed on the outer surface of the outer circumferential plate and the inner circumferential plate.

[0007] Preferably, the stretching mechanism further includes a limiting cover, which is fixedly disposed on the outer surface of the surrounding cylinder. Tension springs, with both ends movably embedded in the middle of the limiting cover; neodymium magnets, multiple neodymium magnets are evenly embedded at equal intervals on the side of the side rod block. The like poles of the neodymium magnets on the two side rod blocks repel each other, using magnetic repulsion to provide elastic support for the side rod block, realizing automatic centering and flexible limiting of the side rod block; rolling rods, multiple rolling rods are embedded on the side of the side rod block, converting the sliding friction between the deflector cylinder and the lifting rod into rolling friction, reducing frictional loss between components and ensuring smooth movement of the lifting rod; mounting holes, multiple mounting holes are evenly spaced at equal intervals on the side of the side rod block; elongated grooves, multiple elongated grooves are opened on the side of the side rod block.

[0008] Preferably, the driving mechanism includes: a fixed frame, which is fixedly disposed on the front side of the main body shell; a driving component one, which is fixedly disposed on the outer surface of the fixed frame; a bearing three, which is respectively fixedly disposed through the front and back sides of the main body shell; an arc frame, which is integrally formed and fixedly disposed on the front and back sides of the main body shell; and an active rod, which is rotatably disposed through the front and back sides of the main body shell by two bearing three at its two ends.

[0009] Preferably, the driving mechanism further includes: an active cylinder, which is fixedly sleeved on the outer surface of the active rod; a through rod, the two ends of which movably pass through the arc frame on the front and back of the main body shell; a counterweight cylinder, which is fixedly sleeved on the outer surface of the through rod; a clamping cylinder, which is fixedly sleeved on the outer surface of the counterweight cylinder; and two counterweight blocks, which are respectively fixedly disposed at the two ends of the through rod.

[0010] Preferably, an inkjet printer is fixedly installed on the top of the inner wall of the main body shell, a threaded cap is threadedly fitted on the top of the inkjet printer, an inkjet box is fixedly installed on the bottom of the inkjet printer, multiple inkjet heads are installed on the bottom of the inkjet box, and a support plate is fixedly installed on the bottom of multiple vertical frames.

[0011] Preferably, the axial direction of the deflecting cylinder and the axial direction of the lifting rod are kept parallel, the axial direction of the lifting rod is located on one side of the axial direction of the deflecting cylinder, and the side rod block is located in the gap between the deflecting cylinder and the lifting rod. The curvature of the outer periphery of the side rod block is matched with the inner wall of the deflecting cylinder, and the curvature of the inner periphery of the side rod block is matched with the outer surface of the lifting rod, so that the thickness of the two sides of the side rod block is inconsistent.

[0012] Preferably, the inner wall of the deflector cylinder forms a line contact with the multiple rolling rods, the outer surface of the multiple bearings forms a line contact with the multiple rolling rods, the axial direction of the multiple rolling rods is parallel to the axial direction of the lifting rod, the neodymium magnets on the sides of the two side rod blocks repel each other, the rolling rods are matched with the elongated groove, and the neodymium magnets are matched with the mounting holes.

[0013] Preferably, the deflecting cylinder is located in the middle of the two inner ring plates, the lifting rod moves through the inner ring plate, the outer ring plate and the limiting edge, and the two ends of the tension spring are respectively connected to the outer surfaces of the two ring cylinders, so that the tension of the tension spring acts on the outer surfaces of the two ring cylinders, and the elastic force of the push spring acts on the middle plate and the side plate.

[0014] Preferably, the clamping cylinder is located directly above the active cylinder, the through rod movably passes through the front and back of the main body shell, the piston cylinder is movably sleeved on the end of the piston rod, the axial direction of the piston cylinder is perpendicular to the axial direction of the lifting rod, and the axial direction of the push spring is perpendicular to the axial direction of the deflection cylinder.

[0015] The beneficial effects of this invention are as follows: This invention provides radial elastic thrust through a push spring and circumferential elastic tension through a pull spring. The two work together to achieve bidirectional elastic stretching of the substrate in both the circumferential and radial directions, overcoming the limitation of existing equipment's single-direction rigid stretching. The elastic stretching structure can adapt to the elastic deformation characteristics of the substrate, ensuring uniform stretching across all parts of the substrate. The counterweight-type clamping structure using a counterweight cylinder and counterweight blocks provides a downward adaptive clamping force to the clamping cylinder. Combined with the arc-shaped guide of the arc frame, the clamping cylinder can automatically adjust its clamping height according to the thickness of the substrate. Furthermore, the clamping force can be adjusted by replacing counterweight blocks of different weights, accommodating flexible / rigid materials. The substrate is designed for optimal printing. The sliding friction between the bias cylinder and the lifting rod is converted into rolling friction through a rolling rod, while bearings one, two, and three reduce frictional resistance and wear between transmission components. The structural layout of the tensioning mechanism, drive mechanism, and inkjet assembly is mutually compatible, and independent horizontal and vertical adjustment structures prevent interference between mechanisms. The drive unit is a servo motor, enabling precise speed and start / stop control, synchronized with the inkjet head's spraying action. This ensures immediate printing after substrate positioning, avoiding positional shifts caused by transport vibrations, and achieving synchronized and precise control of substrate positioning and inkjet printing. The substrate pulls the side rods, neodymium magnets, rolling rods, and deflecting cylinders to one side of the lifting rod's axis. The weight of the side rods and other structures is vertically downward, causing the surface of the deflecting cylinders to press and tighten the substrate. As the substrate is conveyed, it pulls the two deflecting cylinders to rotate around the axis of the middle rod. The tension of multiple tension springs acts on the surrounding cylinders, causing the two sets of middle rods, deflecting cylinders, inner and outer discs to rotate around the axis of the middle rod. This tightens the substrate on the surfaces of the four deflecting cylinders. Through multiple structures, a triple tension is generated to tighten the substrate, ensuring that the substrate remains flat and resulting in clear printing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an inkjet printing device proposed in this invention; Figure 2 This is a schematic cross-sectional view of the main shell of an inkjet printing device proposed in this invention; Figure 3 This is a schematic diagram of the tensioning mechanism structure of an inkjet printing device proposed in this invention. Figure 1 ; Figure 4 This is a schematic diagram of the tensioning mechanism structure of an inkjet printing device proposed in this invention. Figure 2 ; Figure 5 This is a schematic diagram of the tensioning mechanism structure of an inkjet printing device proposed in this invention. Figure 3 ; Figure 6 This is a schematic diagram of the tensioning mechanism structure of an inkjet printing device proposed in this invention. Figure 4 ; Figure 7 This is a schematic diagram of the tensioning mechanism structure of an inkjet printing device proposed in this invention. Figure 5 ; Figure 8 This is a schematic diagram of the tensioning mechanism structure of an inkjet printing device proposed in this invention. Figure 6 ; Figure 9 This invention provides a schematic diagram of the disassembly of the tensioning mechanism of an inkjet printing device. Figure 1 ; Figure 10 This is a schematic diagram of the tensioning mechanism structure of an inkjet printing device proposed in this invention. Figure 2 ; Figure 11 This is a schematic diagram of the drive mechanism of an inkjet printing device proposed in this invention.

[0017] In the diagram: Main shell 1, Bearing 11, Intermediate rod 12, Intermediate block 13, Intermediate disc 14, Push spring 15, Piston rod 16, Side disc 17, Side block 18, Piston cylinder 19, Lifting rod 110, Bearing 2 111, Side rod block 112, Neodymium magnet 113, Rolling rod 114, Deflecting cylinder 115, Mounting hole 116, Long groove 117, Inner circumference disc 118, Outer circumference disc 119, Limiting edge 120, Horizontal cylinder 121, Encircling cylinder 122, Limiting cover 123, Tension spring 124, Vertical frame 2, Support plate 3, Inkjet printer 4, Threaded cap 5, Inkjet box 6, Drive component 1 7, Fixed frame 71, Bearing 3 72, Arc frame 73, Active rod 74, Active cylinder 75, Counterweight cylinder 76, Pressing cylinder 77, Through rod 78, Counterweight block 79. Detailed Implementation

[0018] Reference Figures 1 to 11 An inkjet printing device includes: a stretching mechanism, wherein multiple vertical frames 2 are fixedly arranged at the bottom of the stretching mechanism, the stretching mechanism is used to stretch the inkjet printing substrate A in multiple dimensions to achieve flatness and avoid wrinkles and displacement of the substrate A affecting the printing accuracy; and a driving mechanism, which is arranged on both sides of the stretching mechanism, the driving mechanism is used to provide power for the conveying of the substrate A, and cooperates with the stretching mechanism to complete the pre-printing finishing of the substrate A and the position fixation during the printing process.

[0019] In this invention, the tensioning mechanism includes: a main shell 1, the bottom of which is fixedly mounted on the top of multiple vertical frames 2, providing installation support and protection for each component of the tensioning mechanism; bearings 11, which are respectively fixedly mounted through the front and back of the main shell 1, for supporting the rotation of the intermediate rod 12 and reducing the frictional resistance when the intermediate rod 12 rotates; and intermediate rods 12, one end of which is rotatably mounted through the bearings 11 through the front and back of the main shell 1, serving as the core transmission rod of the tensioning mechanism, transmitting rotational power and driving other components to move in tandem.

[0020] In this invention, intermediate blocks 13 are fixedly disposed at the other end of intermediate rods 12 to achieve a fixed connection between the intermediate rods 12 and intermediate disks 14, thereby transmitting power; intermediate disks 14 are fixedly disposed on the outer surface of intermediate blocks 13 to serve as mounting bases for push springs 15 and to provide fixed points for piston rods 16; push springs 15 are fixedly disposed at one end on the outer surface of intermediate disks 14 to provide elastic thrust, driving side disks 17 to move linearly away from intermediate disks 14, thereby achieving elastic stretching of the substrate A.

[0021] In this invention, a side plate 17 is fixedly mounted on the other end of a push spring 15, receiving the elastic thrust of the push spring 15 and driving the side block 18 and the lifting rod 110 to move synchronously; a piston rod 16 and a piston cylinder 19 are fixedly mounted on the outer surfaces of the middle plate 14 and the side plate 17, respectively, and cooperate with each other to guide the linear movement of the side plate 17, ensuring the straightness and stability of the movement; a side block 18 is fixedly mounted on the outer surface of the side plate 17 to realize the fixed connection between the side plate 17 and the lifting rod 110, driving the lifting rod 110 to move synchronously.

[0022] In this invention, a lifting rod 110 is fixedly disposed in the middle of the side block 18, serving as a lifting transmission component of the stretching mechanism to achieve vertical stretching adjustment and adapt to substrates A of different thicknesses and specifications; an offset cylinder 115 is movably sleeved around the lifting rod 110 to achieve eccentric guidance of the lifting rod 110, and works with the side rod block 112 to achieve precise position adjustment of the lifting rod 110; two side rod blocks 112 are movably sleeved inside the offset cylinder 115 to fill the eccentric gap between the offset cylinder 115 and the lifting rod 110, achieving flexible transmission and position limiting between the lifting rod 110 and the offset cylinder 115.

[0023] In this invention, the stretching mechanism further includes: a second bearing 111, multiple second bearings 111 are fixedly sleeved on the outer surface of the lifting rod 110 to reduce the frictional resistance between the lifting rod 110 and the rolling rod 114, so as to realize the smooth rotation and movement of the lifting rod 110; an inner circumferential plate 118, the middle of the inner circumferential plate 118 is fixedly sleeved on the other end of the middle rod 12, and cooperates with the outer circumferential plate 119 to provide installation support for the horizontal cylinder 121 and the surrounding cylinder 122, forming the frame structure of the stretching mechanism; and an outer circumferential plate 119, the outer circumferential plate 119 is fixedly sleeved on one end of the middle rod 12, and cooperates with the inner circumferential plate 118 to limit the edge of the substrate A and prevent the substrate A from falling off during the stretching process.

[0024] In this invention, a limiting edge 120 is integrally formed and fixedly disposed on the side of the outer disk 119 and the inner disk 118; a horizontal cylinder 121 is fixedly disposed at both ends on the outer surface of the two inner disks 118 respectively, connecting and fixing the two inner disks 118 to ensure the structural stability between the inner disks 118, and providing support for the horizontal stretching of the substrate A; a ring cylinder 122 is disposed at both ends on the outer surface of the outer disk 119 and the inner disk 118 respectively, distributed along the circumferential direction to realize the circumferential stretching of the substrate A, ensuring the uniformity of stretching of the substrate A in all directions.

[0025] In this invention, the stretching mechanism further includes: a limiting cover 123, which is fixedly disposed on the outer surface of the surrounding cylinder 122 to limit the end of the tension spring 124, prevent the tension spring 124 from falling off, and ensure the stable output of the tension force of the tension spring 124; and a tension spring 124, whose two ends are respectively movably embedded in the middle of the limiting cover 123 to provide elastic tension, realize elastic tension between the surrounding cylinders 122, drive the substrate A to achieve circumferential elastic stretching, and adapt to the elastic deformation characteristics of the substrate A.

[0026] In this invention, neodymium magnets 113 are uniformly and evenly embedded in the side of the side rod block 112 at equal intervals. The neodymium magnets 113 on the two side rod blocks 112 are like-paired and repel each other, using magnetic repulsion to provide elastic support for the side rod block 112, thereby achieving automatic centering and flexible positioning of the side rod block 112. Rolling rods 114 are embedded in the side of the side rod block 112, converting the sliding friction between the biasing cylinder 115 and the lifting rod 110 into rolling friction, reducing frictional loss between components and ensuring the smooth movement of the lifting rod 110. In this invention, mounting holes 116, with multiple mounting holes 116 evenly spaced and equidistantly opened on the side of the side rod block 112, provide precise mounting points for the neodymium magnet 113, ensuring the consistency and stability of the neodymium magnet 113 installation; elongated grooves 117, with multiple elongated grooves 117 opened on the side of the side rod block 112, provide installation and movement space for the rolling rod 114, ensuring the rotational freedom of the rolling rod 114.

[0027] In this invention, the driving mechanism includes: a fixed frame 71, which is fixedly disposed on the front side of the main body shell 1, providing a fixed mounting base for the driving component 7, ensuring the stability of the driving component 7 during operation, and preventing vibration and displacement; the driving component 7, which is fixedly disposed on the outer surface of the fixed frame 71, serving as the power source of the driving mechanism, and providing power for the rotation of the active rod 74; and bearings 72, which are respectively fixedly disposed through the front and back sides of the main body shell 1, used to realize the rotational support of the active rod 74, reduce the frictional resistance when the active rod 74 rotates, and ensure the efficiency of power transmission.

[0028] In this invention, the arc frame 73 is integrally formed and fixedly installed on the front and back of the main body shell 1, providing an arc-shaped motion guide for the through rod 78, enabling the through rod 78 to swing up and down, adapting to the pressing requirements of substrates A of different thicknesses; the active rod 74 is rotatably installed on the front and back of the main body shell 1 through two bearings 72 at its two ends, serving as the core transmission rod of the drive mechanism, transmitting the power of the drive component 7 and driving the active cylinder 75 to rotate synchronously.

[0029] In this invention, the driving mechanism further includes: an active cylinder 75, which is fixedly sleeved on the outer surface of the active rod 74 and rotates synchronously with the active rod 74. It conveys the substrate A through friction with the substrate A and provides power for the movement of the substrate A; a through rod 78, whose two ends movably pass through the arc frame 73 on the front and back of the main body shell 1, serving as the mounting base for the pressing cylinder 77 and driving the pressing cylinder 77 to swing in an arc along the arc frame 73; and a counterweight cylinder 76, which is fixedly sleeved on the outer surface of the through rod 78 and uses its own weight to provide downward pressing force for the pressing cylinder 77, ensuring the tightness of the fit between the pressing cylinder 77 and the substrate A.

[0030] In this invention, a pressing cylinder 77 is fixedly sleeved on the outer surface of a counterweight cylinder 76 and cooperates with an active cylinder 75 to achieve vertical pressing and positioning of the substrate A, preventing the substrate A from slipping during transport and printing, and ensuring the accuracy of the printing position; two counterweight blocks 79 are respectively fixedly set at both ends of a through rod 78 to adjust the weight balance at both ends of the through rod 78, ensuring the uniformity of the pressing force of the pressing cylinder 77 on the substrate A, and the magnitude of the pressing force can be adjusted according to the material of the substrate A.

[0031] In this invention, an inkjet printer 4 is fixedly installed on the top of the inner wall of the main body shell 1. The inkjet printer 4 is used to store and supply printing ink, providing an ink source for inkjet printing. A threaded cap 5 is threaded on the top of the inkjet printer 4 to achieve sealing and opening / closing of the inkjet printer 4, facilitating the addition of ink and maintenance and cleaning. An inkjet box 6 is fixedly installed at the bottom of the inkjet printer 4. The inkjet box 6 is used to divert and stabilize the ink to ensure uniform ink supply to each inkjet head. Multiple inkjet heads are installed at the bottom of the inkjet box 6. The inkjet heads are used to atomize the ink and spray it onto the surface of the substrate A to achieve the printing of patterns and text. Support plates 3 are fixedly installed at the bottom of multiple vertical frames 2 to provide bottom support for the entire device, ensuring the stability of the device and adjusting the working height of the device.

[0032] In this invention, the axial direction of the biasing cylinder 115 and the axial direction of the lifting rod 110 are kept parallel. The axial direction of the lifting rod 110 is located on one side of the axial direction of the biasing cylinder 115, maintaining an eccentric setting. The side rod block 112 is located in the gap between the biasing cylinder 115 and the lifting rod 110. The curvature of the outer periphery of the side rod block 112 matches the inner wall of the biasing cylinder 115, and the curvature of the inner periphery of the side rod block 112 matches the outer surface of the lifting rod 110, so that the thicknesses on both sides of the side rod block 112 are inconsistent. The micro-displacement adjustment of the lifting rod 110 is realized through the eccentric structure, and the stretching position and stretching amount of the substrate A are precisely controlled.

[0033] In this invention, the inner wall of the biasing cylinder 115 forms a line contact with the multiple rolling rods 114, the outer surface of the multiple bearings 111 forms a line contact with the multiple rolling rods 114, the axial direction of the multiple rolling rods 114 is parallel to the axial direction of the lifting rod 110, the neodymium magnets 113 on the sides of the two side rod blocks 112 repel each other, the rolling rods 114 are matched with the elongated grooves 117, and the neodymium magnets 113 are matched with the mounting holes 116. The line contact fit structure effectively reduces the frictional resistance between components, and the magnetic repulsion achieves flexible positioning of the side rod blocks 112, ensuring smooth movement and precise positioning of the lifting rod 110 within the biasing cylinder 115.

[0034] In this invention, the biasing cylinder 115 is located in the middle of the two inner circumferential discs 118, and the lifting rod 110 moves through the inner circumferential disc 118, the outer circumferential disc 119, and the limiting edge 120. The two ends of the tension spring 124 are respectively connected to the outer surfaces of the two surrounding cylinders 122, so that the tension of the tension spring 124 acts on the outer surfaces of the two surrounding cylinders 122, and the elastic force of the push spring 15 acts on the middle disc 14 and the side disc 17. The elastic forces of the tension spring 124 and the push spring 15 cooperate to realize the bidirectional elastic stretching of the substrate A in the circumferential and radial directions, ensuring the uniformity of stretching of each part of the substrate A and avoiding damage to the substrate A due to rigid stretching.

[0035] In this invention, the clamping cylinder 77 is located directly above the active cylinder 75, the through rod 78 movably passes through the front and back of the main body shell 1, the piston cylinder 19 is movably sleeved on the end of the piston rod 16, the axial direction of the piston cylinder 19 is perpendicular to the axial direction of the lifting rod 110, and the axial direction of the push spring 15 is perpendicular to the axial direction of the biasing cylinder 115.

[0036] In this invention, bearings 11, 111, and 72 are fitted with corresponding rods using an interference fit to ensure the stability of the rotational support, with the fit clearance controlled between 0.005mm and 0.01mm. Push springs 15 and 124 are welded to their corresponding mounting points to ensure the stability of the elastic / tension transmission. The spring constant is selected based on the conventional tensile requirements of substrate A, ranging from 5N / mm to 20N / mm. Piston cylinder 19 and piston rod 16, and deflector cylinder 115 and lifting rod 110, are fitted with a clearance fit, with the clearance controlled between 0.01mm and 0.02mm to ensure smooth movement. The operation is smooth and without significant shaking; the neodymium magnet 113 and the mounting hole 116, and the roller 114 and the elongated groove 117 adopt a transition fit to ensure the stability of the component installation and not affect the rotational freedom of the roller 114; the clamping cylinder 77 is made of elastic rubber with a Shore hardness of 60-70 to ensure tight adhesion to the substrate A, while avoiding scratching the surface of the substrate A; the drive component 7 is a servo motor, model 60ST-M01330, with a rated speed of 3000r / min and can achieve precise speed adjustment of 0.1r / min. It is connected to the inkjet head's jet controller through a signal line to achieve synchronous control.

[0037] First, based on the material, thickness, and specifications of the substrate A to be printed, replace the counterweight 79 with one of appropriate weight and adjust the clamping force of the clamping cylinder 77; rotate the deflector cylinder 115 to push the lifting rod 110 for micro-displacement adjustment through the eccentric structure, and set the stretching amount of the substrate A, with an adjustment accuracy of up to 0.01mm; check the ink level of the inkjet assembly. If the ink is insufficient, unscrew the threaded cap 5 to add ink to the inkjet printer 4, and after adding ink, tighten the threaded cap 5 to ensure a seal; pass the substrate A through the gap between the drive cylinder 75 and the clamping cylinder 77, and then pass the substrate A around the outer surface of the four deflector cylinders 115 so that the substrate A is in contact with the horizontal cylinder. 121. The outer surface of the surrounding cylinder 122; the elastic thrust of the push spring 15 drives the side plate 17 to move outward, realizing the radial elastic stretching of the substrate A; the elastic tension of the tension spring 124 drives the surrounding cylinder 122 to be tensioned, realizing the circumferential elastic stretching of the substrate A. The double elastic stretching realizes the flatness and smoothing of the substrate A, eliminating wrinkles and misalignment problems; the gravity of the counterweight block 79 and the counterweight cylinder 76 drives the pressing cylinder 77 to press the substrate A downward, so that the substrate A is tightly attached to the outer surface of the active cylinder 75; the drive component 7 is activated, and the drive component 7 drives the active rod 74 to rotate around the bearing 72. The active cylinder 75 rotates synchronously with the active rod 74. The uniform conveying of substrate A is achieved through friction between the substrate A and the printing material. If the thickness of substrate A changes, the pressing cylinder 77, under the pushing action of substrate A, drives the through rod 78 to swing up and down along the arc groove of the arc frame 73, realizing adaptive adjustment of the pressing height and ensuring close contact between the pressing cylinder 77 and substrate A to prevent conveying slippage. When substrate A is conveyed to the preset position for inkjet printing, the drive component 7 stops precisely according to the preset program. The magnetic repulsion flexible limit and eccentric guide structure of the tensioning mechanism achieve precise positioning of substrate A, with the positioning error controlled within 0.08mm. At the same time as the drive component 7 stops, the inkjet printing... When the printhead receives the synchronization signal, the ink in the inkjet printer 4 is diverted and stabilized by the inkjet box 6, and then atomized by multiple printheads and precisely sprayed onto the preset position of the substrate A to complete the inkjet printing of patterns and text. The diversion and stabilization structure of the inkjet box 6 ensures that the ink supply to each printhead is uniform, avoiding the problem of uneven printing patterns. After printing is completed, the drive unit 7 starts again according to the preset program, transporting the printed substrate A to the unloading end, and at the same time transporting the substrate A to be printed to the printing position, realizing continuous operation. During the operation, the position of the bias cylinder 115 can be finely adjusted in real time according to the printing effect to ensure printing accuracy.

[0038] In use, insert the substrate A through the gap between the drive cylinder 75 and the clamping cylinder 77, and then pass the substrate A around the four bias cylinders 115. The position of the substrate A is as shown in the instruction manual. Figure 2 , 3As shown, the weight of the counterweight 79 causes the pressing cylinder 77 to press against the substrate A, making the substrate A tightly adhere to the upper surface of the active cylinder 75. The power output end of the drive component 7 is fixed to the through rod 78. The drive component 7 drives the through rod 78 and the active cylinder 75 to rotate. The rotation of the active cylinder 75 causes the substrate A to move, so that the substrate A is tightened and conveyed on the upper surfaces of the two active cylinders 75. The substrate A pulls the side rod block 112, neodymium magnet 113, rolling rod 114, and deflecting cylinder 115 to deflect to one side of the lifting rod 110 axially, as shown in the instruction manual. Figure 2 As shown, the weight of the side rod block 112 and other structures is vertically downward, causing the surface of the bias cylinder 115 to press and tighten the substrate A. As the substrate A is conveyed, it pulls the two bias cylinders 115 to rotate around the axis of the middle rod 12. The tension of multiple tension springs 124 acts on the surrounding cylinder 122, causing the two sets of middle rods 12, bias cylinders 115, inner circumferential plate 118, outer circumferential plate 119 and other structures to rotate around the axis of the middle rod 12. This causes the substrate A to be tightened on the surface of the four bias cylinders 115. Through triple tension, the substrate A is tightened directly below the inkjet box 6. The inkjet head at the bottom of the inkjet box 6 is used to atomize the ink and spray it onto the surface of the substrate A to achieve the printing of patterns and text.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An inkjet printing device, characterized in that: include: The stretching mechanism has multiple vertical frames (2) fixedly installed at the bottom. The stretching mechanism is used to stretch the inkjet printing substrate. The drive mechanism is located on both sides of the stretching mechanism. The drive mechanism is used to provide power for the movement of the stretching mechanism and to realize the conveying, pressing and positioning of the substrate. The tensioning mechanism includes: The bottom of the main shell (1) is fixedly set on the top of multiple vertical frames (2) to provide installation support and protection for each component of the tensioning mechanism; Bearing 1 (11), and multiple bearings 1 (11) are respectively fixedly installed on the front and back of the main body shell (1); Intermediate rods (12), one end of multiple intermediate rods (12) are rotatably disposed on the front and back of the main body shell (1) through bearings (11); Intermediate blocks (13), multiple intermediate blocks (13) are respectively fixedly installed at the other end of multiple intermediate rods (12); Two intermediate disks (14) are fixedly mounted on the outer surface of the intermediate block (13); Push spring (15), one end of push spring (15) is fixedly set on the outer surface of the middle disk (14) to provide elastic thrust, drive the side disk (17) to make a linear movement away from the middle disk (14) to achieve elastic stretching of the substrate; Side plate (17), the outer surface of side plate (17) is fixedly disposed on the other end of push spring (15); The piston rod (16) and piston cylinder (19) are respectively fixed on the outer surfaces of the middle plate (14) and the side plate (17). The two cooperate with each other to guide the linear motion of the side plate (17) and ensure the linearity and stability of the motion. Side block (18), the side of the side block (18) is fixedly set on the outer surface of the side plate (17); The lifting rod (110) is fixedly installed in the middle of the side block (18); The deflector cylinder (115) is movably sleeved around the lifting rod (110); Side rod blocks (112): Two side rod blocks (112) are movably sleeved inside the deflector cylinder (115) to fill the eccentric gap between the deflector cylinder (115) and the lifting rod (110).

2. The inkjet printing equipment according to claim 1, characterized in that, The stretching mechanism further includes: Bearing 2 (111), multiple bearing 2 (111) are fixedly sleeved on the outer surface of the lifting rod (110); The inner circumferential plate (118) is fixedly sleeved at the other end of the intermediate rod (12) in the middle. The outer plate (119) is fixedly sleeved on one end of the intermediate rod (12); The limiting edge (120) is integrally formed and fixedly disposed on the side of the outer plate (119) and the inner plate (118); A horizontal cylinder (121) is fixed at both ends to the outer surfaces of two inner circumferential plates (118); The two ends of the multiple surrounding cylinders (122) are respectively fixed on the outer surface of the outer disk (119) and the inner disk (118).

3. The inkjet printing equipment according to claim 2, characterized in that, The stretching mechanism further includes: The limiting cover (123) is fixedly installed on the outer surface of the surrounding cylinder (122). A tension spring (124) has two ends that are movably embedded in the middle of a limiting cover (123); Neodymium magnets (113) are evenly embedded in the side of the side rod block (112) at equal intervals. The neodymium magnets (113) on the two side rod blocks (112) are like-paired and repel each other. The magnetic repulsion force provides elastic support for the side rod block (112) to realize the automatic centering and flexible positioning of the side rod block (112). Roller rods (114), multiple roller rods (114) are embedded in the side of the side rod block (112) to convert the sliding friction between the bias cylinder (115) and the lifting rod (110) into rolling friction, reduce the friction loss between the components, and ensure the smooth movement of the lifting rod (110). Mounting holes (116) are provided on the side of the side rod block (112) with multiple mounting holes (116) spaced at equal intervals and evenly spaced. Long slots (117), multiple long slots (117) openings are provided on the side of the side rod block (112).

4. The inkjet printing equipment according to claim 3, characterized in that, The drive mechanism includes: A fixed frame (71) is fixedly installed on the front of the main body shell (1); Drive component 1 (7) is fixedly mounted on the outer surface of the fixed frame (71); Bearing 3 (72), multiple bearing 3 (72) are respectively fixedly installed through the front and back of the main body shell (1); Arc frame (73) is integrally formed and fixedly installed on the front and back of the main shell (1); The active rod (74) is rotatably mounted on the front and back of the main body shell (1) through two bearings (72) at its two ends.

5. The inkjet printing equipment according to claim 4, characterized in that, The drive mechanism also includes: The active cylinder (75) is fixedly sleeved on the outer surface of the active rod (74); Through rod (78), both ends of which are movable through the arc frame (73) on the front and back of the main shell (1); The counterweight cylinder (76) is fixedly sleeved on the outer surface of the through rod (78); A clamping cylinder (77) is fixedly sleeved on the outer surface of a counterweight cylinder (76); Two counterweights (79) are fixedly installed at both ends of the through rod (78).

6. The inkjet printing equipment according to claim 5, characterized in that, An inkjet printer (4) is fixedly installed on the top of the inner wall of the main body shell (1). A threaded cover (5) is threaded on the top of the inkjet printer (4). An inkjet box (6) is fixedly installed at the bottom of the inkjet printer (4). Multiple inkjet heads are installed at the bottom of the inkjet box (6). Support plates (3) are fixedly installed at the bottom of multiple vertical frames (2).

7. An inkjet printing apparatus according to claim 6, characterized in that, The axial direction of the deflecting cylinder (115) and the axial direction of the lifting rod (110) are kept parallel. The axial direction of the lifting rod (110) is located on one side of the axial direction of the deflecting cylinder (115), maintaining an eccentric setting. The side rod block (112) is located in the gap between the deflecting cylinder (115) and the lifting rod (110). The curvature of the outer periphery of the side rod block (112) matches the inner wall of the deflecting cylinder (115), and the curvature of the inner periphery of the side rod block (112) matches the outer surface of the lifting rod (110), so that the thickness of the two sides of the side rod block (112) is inconsistent.

8. An inkjet printing device according to claim 6, characterized in that, The inner wall of the deflector (115) forms a line contact with the multiple rolling rods (114), the outer surface of the multiple bearings (111) forms a line contact with the multiple rolling rods (114), the axial direction of the multiple rolling rods (114) is parallel to the axial direction of the lifting rod (110), the neodymium magnets (113) on the sides of the two side rod blocks (112) are like-paired and repel each other, the rolling rods (114) are matched with the long groove (117), and the neodymium magnets (113) are matched with the mounting holes (116).

9. An inkjet printing device according to claim 6, characterized in that, The biasing cylinder (115) is located in the middle of the two inner circumferential plates (118). The lifting rod (110) moves through the inner circumferential plate (118), the outer circumferential plate (119) and the limiting edge (120). The two ends of the tension spring (124) are connected to the outer surfaces of the two surrounding cylinders (122) respectively, so that the tension of the tension spring (124) acts on the outer surfaces of the two surrounding cylinders (122), and the elastic force of the push spring (15) acts on the middle plate (14) and the side plate (17).

10. An inkjet printing apparatus according to claim 6, characterized in that, The clamping cylinder (77) is located directly above the active cylinder (75), the through rod (78) is movably inserted through the front and back of the main body shell (1), the piston cylinder (19) is movably sleeved on the end of the piston rod (16), the axial direction of the piston cylinder (19) is perpendicular to the axial direction of the lifting rod (110), and the axial direction of the push spring (15) is perpendicular to the axial direction of the deflection cylinder (115).

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