Special conduction band drying device for digital printing machine

Abstract

The invention discloses a special conduction band drying device for a digital printing machine, and belongs to the field of digital printing machines. Comprising a digital printing machine, and the digital printing machine comprises two sets of rack bodies; the cleaning assembly comprises a flushing part which is installed between the two sets of rack bodies and used for flushing the conduction band, and a wiping part is arranged on the flushing part; the drying assembly comprises a drying part which is arranged on the rack body and is used for drying the conduction band; and the nursing assembly comprises a removing part which is arranged on the side face of the machine frame body and used for sweeping off the guide belt, an adjusting part used for further protecting the surface of the guide belt is arranged between the two sets of machine frame bodies, and a spraying part used for spraying the surface of the guide belt is arranged on the adjusting part. According to the special conduction band drying device for the digital printing machine, preliminary cleaning is achieved through hot water flushing, waste water recycling and wiping of the cleaning assembly; local high temperature is avoided through layered temperature control of the drying assembly, and aging is delayed; and the nursing assembly further removes impurities and protects.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of digital printing machines, and particularly relates to a special belt drying device of a digital printing machine. BACKGROUND

[0002] A digital printing machine is a device for realizing printing production through digital technology, which can directly print patterns in a computer to various carriers such as cloth, film and paper through special digital printing ink, without relying on traditional printing plate making. The digital printing machine uses digital technology to control the nozzle to accurately spray ink on the surface of the printing carrier to form the required pattern. Compared with traditional printing, the digital printing machine has many advantages, such as being able to quickly realize small-batch and personalized printing production, the color of the pattern being more rich and delicate, the production cycle being greatly shortened, the consumption of water resources and dyes being reduced, and being more environmentally friendly. The digital printing machine is widely used in the fields of textiles, advertising decoration and packaging printing.

[0003] During the working process of the digital printing machine, the belt is a key component for transporting the printing carrier (such as cloth, film, etc.), and the cleanliness and dryness of the surface of the belt directly affect the printing quality. After the belt completes the transportation of the printing carrier, it is rotated to the lower side of the device, first washed with hot water to remove surface residues such as printing paste, fiber impurities and other pollutants, and then dried by a drying device to enter the next working cycle.

[0004] At present, the commonly used belt drying device of the digital printing machine has a relatively simple structure, usually a row of fans is arranged below the belt, a heating module is installed at the outlet of the fan, hot air is formed by the air blown out by the fan after being heated by the heating module, and the hot air is directly blown to the surface of the belt to realize drying. However, this traditional drying device has problems in actual application: on the one hand, the heating module usually uses heating wires and other elements, the surface temperature of which is high and unevenly distributed, resulting in large fluctuations in the temperature of the hot air, which is directly impacted on the surface of the belt, easily causing local overheating of the belt. Since the belt is usually made of rubber, long-term exposure to such local high temperature will accelerate the aging of the rubber, resulting in hardening, cracking and decreased elasticity of the belt, and seriously shortening the service life of the belt. Therefore, a special belt drying device of a digital printing machine needs to be designed.

[0005] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background of the present application, and therefore, it can contain information that does not constitute prior art. SUMMARY

[0006] The special belt drying device of the digital printing machine provided by the embodiments of the present application solves the problem of uneven and large fluctuation of the temperature of the hot air caused by the heating module with heating wires in the traditional belt drying device, which easily causes local overheating and aging of the rubber belt and shortens the service life.

[0007] The embodiment of the present application adopts the technical scheme as follows: a special guide belt drying device of a digital printing machine. The digital printing machine comprises two groups of rack bodies, two groups of conveying rollers arranged between the two groups of rack bodies, and a guide belt connected to the two groups of conveying rollers and driven by power; a cleaning assembly arranged between the two groups of rack bodies, the cleaning assembly comprising a flushing part arranged between the two groups of rack bodies for flushing the guide belt, a collecting part arranged on the flushing part for collecting wastewater, a wiping part arranged on the flushing part and capable of dynamic operation, and a driving part arranged on the side of the flushing part and driving the wiping part to rotate; a drying assembly arranged between the two groups of rack bodies and on the side of the cleaning assembly, the drying assembly comprising a drying part arranged on the rack body and used for drying the guide belt after cleaning; a nursing assembly arranged between the two groups of rack bodies, the nursing assembly comprising a cleaning part arranged on the side of the rack body and used for sweeping the guide belt after drying, an adjusting part arranged between the two groups of rack bodies and used for further protecting the surface of the guide belt, a spraying part arranged on the adjusting part and used for spraying the surface of the guide belt, a pressing part arranged on the spraying part and used for triggering the spraying part, and an executing part arranged on the nursing assembly and used for driving the pressing parts of multiple spraying parts to work synchronously.

[0008] Further, the flushing part comprises two groups of supporting rods fixed between the two groups of rack bodies, a plurality of equidistantly arranged supports fixed on the two groups of supporting rods, and a flushing pool box connected to the supports, wherein the flushing pool box is a cuboid structure, the length of the flushing pool box is adapted to the width of the guide belt, a partition plate is fixed on the flushing pool box near the central position, the partition plate is integrally welded with the pool box, and the partition plate is used to divide the flushing pool box into two storage spaces, the left space is defined as a first space, and the right space is defined as a second space.

[0009] Further, the inner wall of the second space on the right side of the flushing pool box is horizontally fixed with a water storage pipe, the water storage pipe is arranged in close contact with the inner wall of the pool box and parallel to the running direction of the guide belt, the water storage pipe is used for storing hot water, a plurality of spray heads facing the guide belt are equidistantly connected to the water storage pipe, the spray heads adopt a fan-shaped spray structure, the spray angle is directed to the lower surface of the guide belt, the spray ranges of adjacent spray heads are superimposed on each other, and one end of the water storage pipe is connected to an external water supply device through a pipe joint.

[0010] Further, the collecting part comprises a collecting box connected between the partition plate and one side of the washing pool box, the collecting box is a horizontal box structure as a whole, the top opening of the collecting box is matched with the lower surface of the guide belt and the spraying range of the spray head, the collecting box is provided with a perforation matched with the shape of the spray head at the position corresponding to the spray head, and a sealing ring made of rubber is mounted on the edge of the perforation in an embedded manner, the sealing ring is tightly attached to the outer wall of the spray head and used for filling the gap between the collecting box and the spray head, blocking the leakage of waste water from the perforation and ensuring the sealing of the inside of the collecting box.

[0011] Further, the low side of the collecting box is horizontally connected with a drain pipe, the drain pipe is made of corrosion-resistant hose, one end of the drain pipe extends into the bottom of the collecting box, the other end of the drain pipe is connected to a waste water collecting tank outside the equipment, a small water pump is integrated in the drain pipe, and a liquid level sensor is arranged in the collecting box.

[0012] Further, the wiping part comprises a wiping roller movably arranged in the first space, the roller body surface of the wiping roller is sleeved with a wiping cloth with strong water absorption and wear resistance, the wiping cloth is attached to the lower surface of the guide belt, and the residual water stains and fine impurities of the guide belt after hot water washing are wiped again, the driving part comprises a motor one mounted on the side of the washing pool box, the output end of the motor one is coaxially and fixedly connected with a belt pulley one, a belt pulley two is correspondingly mounted on the end of the roller shaft of the wiping roller, the belt pulley one and the belt pulley two are drivingly connected through an annular belt body one, and a pressing wheel is fixed to one end of the washing pool box.

[0013] Further, the drying part comprises a support rod two fixed to the inner side of the rack body, the support rod two is a hollow through structure, a drying box is mounted on the top of the support rod two, the drying box is a rectangular metal shell, the length of the drying box is matched with the width of the guide belt, a plurality of groups of fans are equidistantly arranged in a straight line direction at the bottom end of the drying box, and the bottom surface of the drying box at the corresponding position is provided with a penetrating hole matched with the air outlet surface of the fan.

[0014] Further, the drying box is provided with double-layer heating modules arranged in the drying box, the heating modules are composed of a lower heating part one and an upper heating part two, form a gradient temperature control system, the heating part one is installed far away from the guide belt and used as an auxiliary heating unit, and adopts a pipeline type heating element, the pipeline is filled with heat conducting oil or heated medium, and power dynamic adjustment is realized through an external temperature control device. The heating part two is similar in structure to the heating part one, the heating part two is installed close to the guide belt, the heating part two is used for continuously outputting moderate heat, the heating part two and the heating part one cooperatively form a stable heat field, a cover is fixed to the top of the drying box, the cover is provided in a penetrating mode, the cover protects the heating part two, the heating part one and the heating part two are each provided with independent water inlet ends and water outlet ends, and infrared lamp tubes are symmetrically mounted on the two sides of the cover.

[0015] Further, the cleaning part includes two groups of bearing seats fixed to opposite sides of the rack body, a cleaning brush is connected through bearings between the two groups of bearing seats, the bristles of the cleaning brush are made of wear-resistant and anti-static material, a second motor is fixed inside the rack body, the output shaft of the second motor is rigidly connected with one end of the cleaning brush through a shaft coupling, and the cleaning brush rotates in a direction opposite to the movement direction of the guide belt; The adjusting part includes a horizontal crossbar fixed to the inner side of the rack body, a slide rail is installed on the bottom surface of the crossbar, the slide rail extends along the width direction of the guide belt, a plurality of groups of slide blocks are equidistantly arranged on the slide rail, the spraying part includes a mounting plate installed on the slide blocks, a storage bottle is fixed through the mounting plate, the storage bottle is made of transparent plastic material, a liquid level sensor is attached to the inner wall of the storage bottle, a spray head part is connected to the bottle mouth of the storage bottle, the spray head part has a press switch, the pressing part includes a worm gear horizontally installed on the mounting plate through a shaft bearing, a cam is vertically fixed to one end of the shaft, the cam has an eccentric wheel structure, and periodic displacement is generated when the worm gear rotates, and a box cover is covered on the mounting plate through bolts.

[0016] Further, the spray head part protrudes through the box cover, a fixing seat is welded on the box cover, a pressing rod is installed horizontally through the fixing seat, a contact part is arranged on one end of the pressing rod close to the cam, a spring is sleeved on the outside of the pressing rod, and the two ends of the spring are respectively abutted against the contact part and the fixing seat, the spring force makes the contact part always fit the contour of the cam, the other end of the pressing rod penetrates the press switch, a waist groove is formed on the press switch to provide a space for the axial displacement of the pressing rod generated by the rotation of the cam, a stepped part is sleeved on the pressing rod, the stepped part is made of a rubber gasket, and the spring pre-tightening force makes the stepped part contact the press switch in the initial state; The execution part takes a worm as a power input, the worm penetrates the box covers of a plurality of groups of spraying parts through bearings, the worm is meshed and driven with the worm gears of each group of spraying parts, the plurality of groups of worms are rigidly connected through connecting rods to form a unified power shafting, the shaft end of the cleaning brush is fixed with a belt pulley three, one end of the connecting rod is fixed with a belt pulley four, and the belt pulley three and the belt pulley four are drivingly connected through a belt body two.

[0017] The above-mentioned at least one technical solution adopted by the embodiment of the present application can achieve the following beneficial effects: A kind of special guide belt drying device of digital printing machine, the guide belt of digital printing machine is driven circulation by conveying roller, cleaning component first with hot water flushing of flush part, waste water recovery of collection part, dry with the cooperation of driving part of wiping part, realize preliminary cleaning of guide belt;The drying part of drying component abandons traditional simple heating module, adopt layered temperature control design etc., avoid local high temperature, accurately maintain the drying temperature of the guide belt material, delay rubber aging;Nursing component again with the cooperation of adjustment part, spray part, pressing part and execution part, complete the surface protection of guide belt.The whole device from cleaning, drying to maintenance whole process effect, solve the problem of guide belt aging caused by uneven heating of traditional device, improve the cleanliness and service life of guide belt. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application, the illustrative embodiments of the present application and its description are used to explain the present application, and do not constitute undue limitation on the present application.

[0019] In the drawings: Figure 1 It is the overall schematic diagram of the special guide belt drying device of digital printing machine in the present application; Figure 2 It is the bottom structure schematic diagram of Figure 1 ; Figure 3 It is the right view of Figure 2 ; Figure 4 It is the partial structure schematic diagram of Figure 3 ; Figure 5 It is the enlarged view of A of Figure 4 ; Figure 6 It is the partial structure schematic diagram of Figure 3 ; Figure 7 It is the enlarged view of B of Figure 6 ; Figure 8 It is the enlarged view of C of Figure 7 ; Figure 9 It is the partial structure schematic diagram of Figure 6 ; Figure 10 It is the enlarged view of D of Figure 9 ; Figure 11 It is the enlarged view of E of Figure 10 ; Reference signs: 1, digital printing machine;11, rack body;12, print nozzle assembly;13, conveying roller;14, pressure roller;15, guide belt; 2, cleaning assembly; 21, support rod one; 22, support; 23, flush pool box; 24, partition; 25, water storage pipe; 26, pipe joint one; 27, spray head; 28, collection box; 29, perforation; 210, drain pipe; 211, wiping roller; 212, motor one; 213, pulley one; 214, pulley two; 215, belt body one; 216, pressing wheel.

[0020] 3, drying assembly; 31, support rod two; 32, drying box; 33, fan; 34, heating part one; 35, cover; 36, heating part two; 361, water inlet end; 362, water outlet end; 37, infrared lamp tube; 4, nursing assembly; 41, bearing seat; 42, cleaning brush; 43, motor two; 44, pulley four; 45, belt body two; 46, cross rod; 47, slide rail; 48, sliding block; 49, mounting plate; 410, box cover; 411, storage bottle; 412, pipe joint two; 413, worm; 414, worm; 415, connecting rod; 416, cam; 417, contact part; 418, pressing rod; 419, spring; 420, fixing seat; 421, spray head part; 422, press switch. DETAILED DESCRIPTION

[0021] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined object, the specific embodiments, structures, features and effects according to the present application are described in detail below in combination with the drawings and preferred embodiments.

[0022] The technical solutions provided by the embodiments of the present application are described in detail below in combination with the drawings.

[0023] Referring to Figures 1 to 11 As shown in the figure, the embodiment of the present application provides a special guide belt drying device of digital printing machine, which comprises a digital printing machine 1, the digital printing machine 1 comprises two groups of rack bodies 11, the two groups of rack bodies 11 are symmetrically and spaced apart, providing a support frame for guide belt conveying and printing operation, a printing nozzle assembly 12 is connected between the two groups of rack bodies 11, and the printing nozzle assembly 12 is the core component of the digital printing machine 1 to realize pattern injection, the printing nozzle assembly 12 mainly comprises a nozzle mounting frame, a plurality of high-precision printing nozzles, an ink supply pipeline, a driving control module and a position adjusting mechanism. Among them, the nozzle mounting frame is made of light weight high strength alloy material, which is fixed horizontally on the rack body 11 in the form of a long strip, and is used to stably bear all the printing nozzles; The printing nozzles are uniformly arranged along the length direction of the mounting rack, each nozzle corresponds to a specific color channel (such as cyan, magenta, yellow, black and various special colors), and the bottom of the nozzle is provided with fine spray holes, so that the ink can be sprayed in the form of precise small droplets onto the surface of the printing carrier; one end of the ink supply pipeline is connected to the ink box inside the machine body, the other end is connected to each printing nozzle through a quick connection interface, a micro electromagnetic valve is arranged on the pipeline to control the on-off and flow of the ink, and the stable ink supply is ensured; the drive control module is integrated in the electrical box on one side of the mounting rack, connected with the main control system of the printing machine through a data line, and can drive the piezoelectric crystal or thermal bubble generating device in the nozzle according to the pattern data signal to realize the on-demand spraying of the ink, and can also monitor the working state of the nozzle in real time; Meanwhile, two groups of conveying rollers 13 are arranged between the two groups of rack bodies 11, and a guide belt 15 is connected to the two groups of conveying rollers 13. The two groups of conveying rollers 13 are driven by a belt wheel driving assembly (including a motor, a driving belt wheel, a driven belt wheel and a transmission belt) for power transmission. After the motor is started, the conveying rollers 13 are driven to rotate synchronously through the cooperation of the belt wheel and the transmission belt, and then the guide belt 15 is pulled to circulate. After the motor is started, the conveying rollers 13 are driven to rotate synchronously through the cooperation of the belt wheel and the transmission belt, and then the guide belt 15 is pulled to circulate. The continuous conveying of the cloth is realized, and the cloth is laid on the surface of the guide belt 15 and moves with the guide belt 15 to complete the printing process. Meanwhile, at the corresponding positions of the two groups of rack bodies 11, a pressure roller 14 is horizontally arranged through a bearing seat. The pressure roller 14 is pressed against the inner surface of the guide belt 15. By using its own gravity and adjustable installation tension, the pressure roller 14 continuously applies pressure to the guide belt 15 to offset the relaxation and deformation of the guide belt 15 caused by long-term operation and the influence of temperature and humidity, so as to ensure that the guide belt 15 always maintains stable tension, closely fits between the guide belt 15 and the conveying roller 13, avoids slipping and deviation, and guarantees the stability of cloth conveying and printing accuracy. Meanwhile, a cleaning assembly 2 is arranged at the lower end of the guide belt 15 between the two groups of rack bodies 11. The cleaning assembly 2 includes a flushing part arranged between the two groups of rack bodies 11. The flushing part includes two groups of support rods one 21 fixed between the two groups of rack bodies 11. A plurality of groups of equidistantly arranged supports 22 are fixed on the two groups of support rods one 21. A flushing pool box 23 is connected and fixed on the supports 22. The flushing pool box 23 is a cuboid structure made of stainless steel to ensure water resistance and strength. The length of the flushing pool box 23 is adapted to the width of the guide belt 15. A partition plate 24 is fixed on the flushing pool box 23 near the central position. The partition plate 24 is integrally welded with the pool box. The partition plate 24 is used to divide the flushing pool box 23 into two storage spaces. Figure 5 For example, the space on the left side is defined as the first space, and the space on the right side is defined as the second space. The second space on the right side of the flushing pool box 23 is a key area for realizing hot water flushing of the guide belt 15. A water storage pipe 25 is fixed horizontally on the inner wall of the second space. The water storage pipe 25 is made of copper or stainless steel and is resistant to high temperature and corrosion. The water storage pipe 25 is arranged in close contact with the inner wall of the pool box and is parallel to the running direction of the guide belt 15. The water storage pipe 25 is used for storing hot water, and a plurality of spray heads 27 are connected to the water storage pipe 25 at equal intervals and face the guide belt 15. The spray heads 27 adopt a fan-shaped spray structure, and the spray angle is directed to the lower surface of the guide belt 15. The spray ranges of adjacent spray heads 27 are superimposed on each other, so that a continuous and uniform hot water spray belt is formed below the guide belt 15, ensuring that the printing paste and fiber impurities remaining on the surface of the guide belt 15 are fully flushed. In order to ensure continuous supply of hot water, one end of the water storage pipe 25 is connected to an external water supply device through a pipe joint 26. The external water supply device can supply hot water preheated to a suitable temperature (generally 40-60℃, suitable for the material and cleaning needs of the guide belt 15) to the water storage pipe 25 through the pipe joint 26 according to system instructions, so as to continuously provide flushing water source for the spray heads 27. Combined with the circulating operation of the guide belt 15, the guide belt 15 is periodically flushed with hot water to remove surface contaminants and lay a clean foundation for subsequent drying process. A collection part is connected between the partition plate 24 and one side of the flushing pool box 23. The collection part includes a collection box 28 connected between the partition plate 24 and one side of the flushing pool box 23. The collection box 28 is a horizontal box structure adapted to the flushing area below the guide belt 15 and the layout of the spray heads 27. The top opening of the collection box 28 is adapted to the lower surface of the guide belt 15 and the spray range of the spray heads 27, and can completely collect the waste water dripping from the surface of the guide belt 15 after being sprayed by the spray heads 27. The collection box 28 is provided with a through hole 29 corresponding to the position of the spray head 27, and a sealing ring made of rubber is mounted on the edge of the through hole 29 by embedding. The sealing ring closely fits the outer wall of the spray head 27, on the one hand, to fill the gap between the collection box 28 and the spray head 27 and block the leakage of waste water from the through hole 29, ensuring the sealing of the inside of the collection box 28; on the other hand, the elastic buffer property of the rubber offsets the slight vibration displacement of the spray head 27 and the collection box 28 due to equipment operation, avoiding hard friction damage to the components. A drain pipe 210 is horizontally connected to the low side of the collection box 28. The drain pipe 210 is made of a soft hose resistant to corrosion. One end of the drain pipe 210 extends into the bottom of the collection box 28 to ensure that the waste water at the lowest liquid level in the collection box 28 can be pumped out. The other end of the drain pipe 210 is connected to a waste water collection tank outside the equipment. In order to solve the problem of poor flowability of the waste water due to the inclined installation of the collection box 28, a small water pump is integrated in the drain pipe 210. The water pump is powered through a pre-designed electrical interface on the collection box 28 and can be automatically started and stopped according to the signal of a liquid level sensor (not shown in the figure) in the collection box 28, so as to timely pump and discharge the collected waste water, avoid the waste water from being accumulated and overflowing in the collection box 28, and always maintain the cleanliness below the guide belt 15. In the first space on the left side of the washing pool box 23, a further cleaning guide belt 15 is provided with a movable wiping part. The wiping part includes a wiping roller 211 movably arranged in the first space, and the roller body surface of the wiping roller 211 is sleeved with a wiping cloth (not shown in the figure) having strong water absorption and wear resistance. The wiping cloth can be conveniently disassembled and assembled by magic tape or buckle. The wiping cloth can adhere to the lower surface of the guide belt 15, and can perform secondary wiping on the residual water stains and fine impurities of the guide belt 15 after hot water washing.

[0024] In order to drive the wiping roller 211 to rotate, a driving part is arranged on the side of the washing pool box 23. The driving part includes a motor one 212 fixedly installed on the side of the washing pool box 23. The output end of the motor one 212 is coaxially connected with a belt pulley one 213. The roller shaft end of the wiping roller 211 is correspondingly provided with a belt pulley two 214. The belt pulley one 213 and the belt pulley two 214 are connected by a ring-shaped belt body one 215. In order to avoid the belt body one 215 from being loose and slipping, a pressing wheel 216 is fixedly arranged at one end of the washing pool box 23. The pressing wheel 216 applies continuous pressure to the belt body one 215, so as to ensure stable power transmission. After the motor one 212 is started, the belt pulley set and the belt body one 215 are connected, so as to drive the wiping roller 211 to rotate. The wiping cloth is simultaneously applied to the surface of the guide belt 15, so as to efficiently wipe off the water stains. The hot water washing process is matched, so as to maintain the cleanliness of the surface of the guide belt 15, and ensure stable operation of the printing process. As shown in Figure 6 and Figure 8 In the operation process of the digital printing machine 1, after the guide belt 15 is washed by the washing assembly 2 and wiped by the wiping part, it needs to be quickly dried before entering the next cycle. An drying assembly 3 is arranged on the side of the washing assembly 2 between the two rack bodies 11. The drying assembly 3 includes a drying part arranged on the rack body 11. The drying part includes a support rod two 31 fixedly arranged on the inner side of the rack body 11. The support rod two 31 is a hollow through structure, which can hide wires and pipes, so as to ensure the appearance of the equipment to be clean. The top of the support rod two 31 is tightly installed by bolts. The drying box 32 is a rectangular metal shell with a length suitable for the width of the guide belt 15. A plurality of fans 33 are arranged at equal intervals in a straight line direction at the bottom end of the drying box 32. The bottom surface of the drying box 32 at the corresponding position is provided with a penetrating hole (not shown in the figure) matched with the air outlet surface of the fan 33. When the fan 33 operates, external air is sucked into the drying box 32 through the penetrating hole, so as to provide airflow power for drying the guide belt 15, form the basic condition of hot air circulation, and ensure that the heat generated by the subsequent heating module effectively acts on the surface of the guide belt 15, so as to realize water evaporation and drying.

[0025] The heating module is arranged in the drying box 32 in double layers, which is composed of the lower heating part one 34 and the upper heating part two 36, forming a gradient temperature control system. The heating part one 34 is installed far away from the guide belt 15, which is used as an auxiliary heating unit, adopts a pipeline heating element, and is filled with heat-conducting oil or heated medium in the pipeline, and realizes dynamic power adjustment through external temperature control equipment. When the humidity of the guide belt 15 is high and needs to be quickly heated, the heating part one 34 can increase the power to preheat the airflow in the drying box 32 by heat radiation and heat conduction; when the humidity of the guide belt 15 decreases and approaches dryness, the power is automatically reduced to avoid the overall temperature being too high. The heating part two 36 is similar in structure to the heating part one 34, but is installed closer to the guide belt 15, and is used to continuously output moderate heat. The heating part two 36 cooperates with the heating part one 34 to form a stable heat field. In the middle layer of the two-layer heating module, a high-precision temperature sensor is embedded to collect real-time hot air temperature data and feed back to the control system of the drying assembly 3. The control system dynamically adjusts the power output of the heating part one 34 and the heating part two 36 according to the preset temperature interval (50-60°C, which is suitable for the heat-resistant threshold of the rubber material of the guide belt 15), to ensure the stability of the surface temperature of the guide belt 15, avoid the risk of aging and deformation of the guide belt 15 caused by local high temperature, and maintain the physical properties and service life of the guide belt 15.

[0026] To strengthen the drying uniformity of the guide belt 15, the cover shell 35 is fixed on the top of the drying box 32 by bolts, which is an arc-shaped flow guide structure. The cover shell 35 is provided through, which concentrates and guides the heat generated by the heating part two 36 to the surface of the guide belt 15, and forms a protection for the heating part two 36 to avoid damage to the heating element caused by foreign matter falling. The heating part one 34 and the heating part two 36 are both provided with independent water inlet ends 361 and water outlet ends 362 for connecting heat-conducting oil or heated medium; In addition, on both sides of the cover shell 35, the edge area of the guide belt 15 directly affected by the hot air, the infrared lamp tubes 37 are symmetrically installed. The infrared lamp tubes 37 adopt a low-intensity and large-area irradiation design, and use the penetration of infrared radiation to supplement the drying of the edge and corner areas of the guide belt 15, which are weakly covered by the fan 33 and the heating module. The infrared lamp tubes 37 and the hot air drying form a complement, which completely eliminates the dry dead angle on the surface of the guide belt 15, and guarantees the uniform drying of the guide belt 15 in the whole area, providing a stable operation environment for the guide belt 15 for subsequent printing operations.

[0027] As Figure 6 and Figures 9-11As shown, in order to further improve the cleaning effect of the guide belt 15, a nursing assembly 4 is arranged between the two groups of rack bodies 11. The nursing assembly 4 includes a cleaning part arranged on the side of the rack body 11. The cleaning part includes two groups of bearing seats 41 fixed on the opposite sides of the rack body 11. A cleaning brush 42 is connected to the bearing seats 41 through bearings. The bristles of the cleaning brush 42 are made of wear-resistant and anti-static materials, which can effectively sweep off the fine impurities and fibers that are still left on the surface of the guide belt 15 after drying. A motor two 43 is fixed inside the rack body 11 through a support. The output shaft of the motor two 43 is rigidly connected to one end of the cleaning brush 42 through a shaft coupling. When the motor two 43 operates, it drives the cleaning brush 42 to rotate in the opposite direction of the movement direction of the guide belt 15. By using the reverse friction force, the impurity peeling effect is enhanced, the surface of the guide belt 15 is continuously cleaned, and the cleanliness of the guide belt 15 is ensured. In order to further protect the surface of the guide belt 15 and control the spraying area and amount of the rubber protective agent, an adjusting part is arranged between the two groups of rack bodies 11. The adjusting part includes a horizontal rod 46 fixed horizontally inside the rack body 11. The bottom surface of the horizontal rod 46 is tightly installed with a slide rail 47 through bolts. The slide rail 47 extends along the width direction of the guide belt 15. A plurality of slide blocks 48 are equidistantly arranged on the slide rail 47. The slide blocks 48 are slidingly matched with the slide rail 47 through built-in balls. The position can be flexibly adjusted according to the actual width of the guide belt 15 and the cleaning residual distribution. After adjustment, the slide blocks 48 are locked and fixed with the slide rail 47 to ensure the stability of the spraying part during work. A spraying part is integrated on each group of slide blocks 48. The spraying part includes a mounting plate 49 fixedly installed on the slide block 48. A storage bottle 411 is fixedly penetrated on the mounting plate 49. The storage bottle 411 is made of transparent plastic material, which is convenient for observing the remaining amount of the rubber protective agent inside. A liquid level sensor (such as a capacitive sensor) is pasted on the inner wall of the bottle, which can monitor the remaining amount in real time and feedback to the equipment control system. When the remaining amount is insufficient, the liquid supplement reminder is automatically triggered. A miniature peristaltic pump is built in the pipe joint two 412 of the side wall of the storage bottle 411. The pump is connected to an external rubber protective agent storage tank through a hose, which can automatically supplement the liquid under the instruction of the control system to ensure the continuous spraying operation. The bottle mouth of the storage bottle 411 is connected with a spray head part 421 through a threaded connection. The spray head part 421 has a press switch 422. The spray head part 421 is a mature commercial atomizing spray head and has a fine atomizing function. It can convert the rubber protective agent into uniform mist droplets to cover the surface of the guide belt 15 and form a protective film to delay the aging and cracking of the guide belt 15.

[0028] In order to realize the press switch 422 of the spray part, a pressing part is arranged on the mounting plate 49, which takes the worm gear 413 as the power conversion core, and the worm gear 413 is horizontally installed on the mounting plate 49 through a shaft and a bearing, one end of the shaft is fixed perpendicularly to the cam 416, the cam 416 adopts an eccentric wheel structure, and generates periodic displacement when rotating with the worm gear 413. The box cover 410 is covered on the mounting plate 49 through bolts, the box cover 410 is a sheet metal stamping part, and the transmission parts such as the worm gear 413 and the cam 416 are protected, so that the transmission accuracy is not affected by the invasion of rubber protective agent droplets and impurities; The spray head part 421 extends out of the box cover 410, the box cover 410 is welded with the fixed seat 420, the fixed seat 420 is horizontally penetrated and installed with the pressing rod 418, the pressing rod 418 is welded with the contact part 417 (made of wear-resistant nylon material) near one end of the cam 416, the spring 419 is sleeved on the outer side of the pressing rod 418, the two ends of the spring 419 abut against the contact part 417 and the fixed seat 420 respectively, and the spring 419 is used to make the contact part 417 always fit the contour of the cam 416. The other end of the pressing rod 418 penetrates the press switch 422, and the press switch 422 is provided with a waist groove to provide a space for the axial displacement of the pressing rod 418 when the cam 416 rotates; A stepped part is sleeved on the pressing rod 418, the stepped part is made of a rubber gasket, and in the initial state, the stepped part is in contact with the press switch 422 under the pre-tightening force of the spring 419. When the cam 416 rotates to the protruding end and pushes the contact part 417, the pressing rod 418 moves axially against the elastic force of the spring 419, the stepped part presses the press switch 422, the spray head part 421 sprays the atomized rubber protective agent, when the cam 416 rotates to the recessed end, the spring 419 resets, the pressing rod 418 is pulled back, the press switch 422 is popped up and closed, the intermittent triggering of the spray is realized, the operation rhythm of the guide belt 15 is matched, and the protective agent is uniformly sprayed.

[0029] In order to make the pressing parts of multiple groups of spray parts work synchronously, an execution part is arranged in the nursing assembly 4. The execution part takes the worm 414 as a power input part, the worm 414 penetrates the box covers 410 of multiple groups of spray parts through bearings, and is in meshing transmission with the worm gears 413 of each group of spray parts. The self-locking property and the transmission ratio of the worm gears 413 and the worms 414 are used to ensure that the actions of the multiple groups of spray parts are synchronous. The multiple worms 414 are rigidly connected through connecting rods 415 (such as couplings or welding), to form a unified power shafting. Meanwhile, a belt pulley three is fixed at the shaft end of the cleaning brush 42, a belt pulley four 44 is fixed at one end of the connecting rod 415, and the belt pulley three and the belt pulley four 44 are in transmission connection through a belt body two 45; When the motor two 43 drives the cleaning brush 42 to rotate, the pulley three at the shaft end of the cleaning brush 42 rotates synchronously, drives the pulley four 44, the connecting rod 415 and the plurality of worm gears 414 to rotate through the belt body two 45, the worm gears 414 drive the worm wheels 413 and the cams 416 of each group of the spraying part to rotate, and then trigger the press switch 422, so that the cleaning brush 42 and the spraying part realize linkage operation: the cleaning brush 42 rotates reversely to remove impurities, and synchronously drives the spraying part to intermittently spray the rubber protective agent, so that the cleaning + protection complete maintenance process is formed on the surface of the guide belt 15, the power of the cleaning brush 42 is efficiently transmitted to the spraying part, the maintenance effect of the nursing assembly 4 on the guide belt 15 is guaranteed, and the service life of the guide belt 15 is prolonged.

[0030] It should be noted that, in order to further improve the guide belt 15 nursing process, an infrared lamp tube (not shown in the figure) is fixedly installed on the right side surface of the cross rod 46, the infrared lamp tube adopts a low-power long-wave infrared emission design, and the installation position corresponds to the area of the guide belt 15 after the operation of the spraying part. When the spraying part sprays the atomized rubber protective agent to the surface of the guide belt 15, the infrared lamp tube uses the heat effect of infrared radiation to quickly dry and solidify the rubber protective agent on the surface of the guide belt 15. If the rubber protective agent is not dried in time, the guide belt 15 may be contaminated by contacting the fabric during the fabric conveying process, which affects the printing quality. The heat generated by the infrared lamp tube can make the solvent in the protective agent volatilize quickly, and form a uniform and stable protective film on the surface of the guide belt 15, which realizes the maintenance of the guide belt 15 and avoids the interference of the protective agent residue on the subsequent printing process.

[0031] Working principle: after the digital printing machine 1 is started, the conveying roller 13 on the rack body 11 is driven by the belt pulley driving assembly (motor, pulley, transmission belt) to drive the guide belt 15 to run in a circulating manner, the surface of the guide belt 15 is laid with fabric to be printed, and the fabric moves to the lower side of the printing nozzle assembly 12.

[0032] After printing, the guide belt 15 circulates to the lower side of the equipment and enters the cleaning assembly 2. First, in the second space of the flushing part, the water storage pipe 25 inputs 40-60°C hot water through an external water supply device, a plurality of fan-shaped spray heads 27 spray a continuous hot water spray belt, and the surface of the guide belt 15 is washed to remove residual printing paste and fiber impurities. The waste water drops into the collection box 28, and a small water pump in the drain pipe 210 pumps out the waste water in time according to the liquid level sensor signal. Subsequently, the guide belt 15 moves to the first space, the motor one 212 drives the wiping roller 211 to rotate reversely through the pulley group, the surface of the wiping cloth synchronously wipes and dries the residual water stains on the guide belt 15, and the cleaning pretreatment is completed to prepare for drying.

[0033] The cleaned guide belt 15 enters the drying assembly 3. The fan 33 at the bottom of the drying box 32 operates to inhale air through the penetrating holes, and form gradient hot air through the upper and lower heating modules: the lower heating part one 34 (duct type heating element) dynamically adjusts the power to preheat the airflow; the upper heating part two 36 outputs basic heat, which is monitored in real time by the middle layer temperature sensor, and the control system adjusts the power of the two heating modules according to the target interval of 50-60°C, so as to ensure that the surface of the guide belt 15 is uniformly heated and the moisture is quickly evaporated. The cover 35 concentrates the hot air, and the edge infrared lamp tube 37 supplements the drying dead angle, so as to realize efficient and uniform drying of the guide belt 15 and avoid the risk of high-temperature aging.

[0034] The dried guide belt 15 enters the care assembly 4, and the motor two 43 drives the cleaning brush 42 to rotate in reverse to deeply remove fine impurities on the surface of the guide belt 15 by using reverse friction. At the same time, the adjusting part adjusts the position of the spraying part by adjusting the width of the guide belt 15 through the cross rod 46, the sliding rail 47 and the sliding block 48. In the executing part, the belt pulley three at the shaft end of the cleaning brush 42 drives the connecting rod 415 and multiple groups of worms 414 to rotate through the belt body two 45, the worm 414 drives the worm gear 413 and the cam 416 of the spraying part to periodically push the rod 418, and triggers the spray head part 421 to intermittently spray the rubber protective agent. The infrared lamp tube on the right side of the cross rod 46 synchronously dries and cures the protective agent to form a protective film on the surface of the guide belt 15, delays aging, and after completing deep care, the guide belt 15 enters the printing cycle again to ensure that the equipment continuously and stably operates.

[0035] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, change and modification of the above embodiments based on the technical essence of the present application, without departing from the technical solution of the present application, are still within the scope of the present application.

Claims

1. A belt drying device unique to a digital printing machine, comprising: A digital printing machine (1) includes two sets of frame bodies (11), two sets of conveyor rollers (13) are arranged between the two sets of frame bodies (11), and the two sets of conveyor rollers (13) are connected to a guide belt (15) driven by power. A cleaning assembly (2) is disposed between two sets of the frame bodies (11). The cleaning assembly (2) includes a rinsing section installed between the two sets of the frame bodies (11) for rinsing the guide belt (15). The rinsing section is provided with a collection section for collecting wastewater. The rinsing section is provided with a wiping section that can be dynamically operated. A driving section for driving the wiping section to rotate is provided on the side of the rinsing section. The drying assembly (3) is disposed between the two sets of the frame bodies (11) and on one side of the cleaning assembly (2). The drying assembly (3) includes a drying section disposed on the frame body (11) for drying the cleaned guide belt (15). A care component (4) is disposed between two sets of the frame bodies (11). The care component (4) includes a cleaning part disposed on the side of the frame body (11) for sweeping off the dried guide belt (15). An adjustment part is disposed between the two sets of the frame bodies (11) for further protection of the surface of the guide belt (15). A spray part is disposed on the adjustment part for spraying the surface of the guide belt (15). A pressing part is disposed on the spray part for triggering it. An execution part is disposed on the care component (4) for driving the pressing parts of multiple spray parts to work synchronously.

2. The belt drying device unique to a digital printing machine according to claim 1, characterized in that: The rinsing unit includes two sets of support rods (21) fixed between the two sets of frame bodies (11). Multiple sets of equidistant supports (22) are fixed on the two sets of support rods (21). A rinsing pool box (23) is connected to the supports (22). The rinsing pool box (23) is a cuboid structure. The length of the rinsing pool box (23) is adapted to the width of the guide belt (15). A partition (24) is fixed on the rinsing pool box (23) near the center. The partition (24) is integrally welded to the pool box. The partition (24) is used to divide the rinsing pool box (23) into two storage spaces. The space on the left is defined as the first space, and the space on the right is defined as the second space.

3. The belt drying device unique to a digital printing machine according to claim 2, characterized in that: A water storage pipe (25) is horizontally fixed on the inner wall of the second space on the right side of the flushing pool box (23). The water storage pipe (25) is arranged close to the inner wall of the pool box and parallel to the running direction of the guide belt (15). The water storage pipe (25) is used to store hot water. Multiple sets of spray heads (27) facing the guide belt (15) are connected at equal intervals on the water storage pipe (25). The spray head (27) adopts a fan-shaped spray structure and the spray angle points to the lower surface of the guide belt (15). The spray range of adjacent spray heads (27) overlaps with each other. One end of the water storage pipe (25) is connected to an external water supply device through a pipe joint (26).

4. The belt drying device unique to a digital printing machine according to claim 3, characterized in that: The collection unit includes a collection box (28) connected between the partition (24) and one side of the flushing tank box (23). The collection box (28) is a horizontal box structure. The top opening of the collection box (28) is adapted to the lower surface of the guide belt (15) and the spray range of the spray head (27). The collection box (28) has a perforation (29) adapted to the shape of the spray head (27) at the position corresponding to the spray head (27). A rubber sealing ring is installed on the edge of the perforation (29) by embedding. The sealing ring fits tightly against the outer wall of the spray head (27) to fill the gap between the collection box (28) and the spray head (27), prevent wastewater from leaking from the perforation (29), and ensure the sealing of the inside of the collection box (28).

5. The belt drying device unique to a digital printing machine according to claim 4, characterized in that: A drain pipe (210) is horizontally connected to the lower side of the collection box (28). The drain pipe (210) is made of corrosion-resistant flexible hose. One end of the drain pipe (210) extends into the bottom of the collection box (28), and the other end of the drain pipe (210) is connected to a wastewater collection tank outside the equipment. A small water pump is integrated inside the drain pipe (210), and a liquid level sensor is installed inside the collection box (28).

6. The belt drying device unique to a digital printing machine according to claim 5, characterized in that: The wiping unit includes a wiping roller (211) movably mounted in the first space. The surface of the wiping roller (211) is covered with a wiping cloth that has strong water absorption and wear resistance. The wiping cloth is attached to the lower surface of the guide belt (15) to wipe the residual water stains and fine impurities on the guide belt (15) after being rinsed with hot water. The driving unit includes a motor (212) installed on the side of the rinsing tank box (23). The output end of the motor (212) is coaxially connected to a pulley (213). A pulley (214) is installed on the roller shaft end of the wiping roller (211). The two are connected by a ring belt (215). A pressure wheel (216) is fixed at one end of the rinsing tank box (23).

7. A guide belt drying device unique to a digital printing machine according to claim 6, characterized in that: The drying section includes a second support rod (31) fixed inside the frame body (11). The second support rod (31) is a hollow through structure. A drying box (32) is installed on the top of the second support rod (31). The drying box (32) is a rectangular metal shell. The length of the drying box (32) is adapted to the width of the guide belt (15). Multiple sets of fans (33) are arranged at equal intervals along a straight line at the bottom of the drying box (32). A through hole adapted to the air outlet surface of the fan (33) is opened on the bottom surface of the drying box (32) at the corresponding position.

8. The belt drying device unique to a digital printing machine according to claim 7, characterized in that: The drying box (32) is equipped with a double-layer heating module. The heating module consists of a lower heating part (34) and an upper heating part (36) to form a gradient temperature control system. The heating part (34) is installed far from the guide belt (15) as an auxiliary heating unit. It adopts a pipe heating element, and the pipe is filled with heat transfer oil or a heating medium is introduced. The power is dynamically adjusted by an external temperature control device. The second heating part (36) is similar in structure to the first heating part (34). The second heating part (36) is installed close to the guide belt (15). The second heating part (36) is used to continuously output mild heat. The second heating part (36) and the first heating part (34) cooperate to form a stable heat field. The top of the drying box (32) is fixed with a cover (35). The cover (35) is through-hole set. The cover (35) protects the second heating part (36). The first heating part (34) and the second heating part (36) are both provided with independent water inlet (361) and water outlet (362). Infrared lamps (37) are symmetrically installed on both sides of the cover (35).

9. A guide belt drying device unique to a digital printing machine according to claim 8, characterized in that: The cleaning unit includes two sets of bearing seats (41) fixed to opposite sides of the frame body (11). A cleaning brush (42) is connected between the two sets of bearing seats (41) through a bearing. The bristles of the cleaning brush (42) are made of wear-resistant and anti-static material. A second motor (43) is fixed inside the frame body (11). The output shaft of the second motor (43) is rigidly connected to one end of the cleaning brush (42) via a coupling. The cleaning brush (42) rotates in the opposite direction to the movement direction of the guide belt (15). The adjustment unit includes a horizontal bar (46) fixed to the inner side of the frame body (11). A slide rail (47) is mounted on the bottom surface of the horizontal bar (46). The slide rail (47) extends along the width direction of the guide belt (15). Multiple sets of sliders (48) are arranged equidistantly on the slide rail (47). The spraying unit includes a mounting plate (49) mounted on the sliders (48). A storage bottle (411) is fixed through the mounting plate (49). The storage bottle (411) is made of transparent plastic. A liquid level sensor is attached to the inner wall of the bottle. The bottle mouth of the storage bottle (411) is connected to a spray head (421). The spray head (421) has a push-button switch (422). The push-button part includes a worm gear (413) that is horizontally mounted on the mounting plate (49) via a shaft bearing. One end of the shaft is vertically fixed to a cam (416). The cam (416) adopts an eccentric wheel structure and generates periodic displacement when it rotates with the worm gear (413). The box cover (410) is bolted onto the mounting plate (49).

10. A guide belt drying device unique to a digital printing machine according to claim 9, characterized in that: The nozzle (421) extends through the cover (410). A fixing seat (420) is welded onto the cover (410). A pressure rod (418) is horizontally mounted through the fixing seat (420). A contact part (417) is provided at one end of the pressure rod (418) near the cam (416). A spring (419) is sleeved on the outside of the pressure rod (418). The two ends of the spring (419) abut against the contact part (417) and the fixing seat (420) respectively. The spring (419) springs back. The force ensures that the contact part (417) always fits the contour of the cam (416). The other end of the pressure rod (418) passes through the push-button switch (422). The push-button switch (422) has a waist groove to provide space for the axial displacement of the pressure rod (418) as the cam (416) rotates. The step part is sleeved on the pressure rod (418). The step part is made of rubber gasket. Under the preload of the spring (419), it is initially in contact with the push-button switch (422). The actuator uses a worm gear (414) as the power input component. The worm gear (414) passes through the cover (410) of multiple spray sections through a bearing. The worm gear (414) meshes with the worm wheel (413) of each spray section for transmission. Multiple sets of worm gears (414) are rigidly connected by a connecting rod (415) to form a unified power shaft system. The shaft end of the cleaning brush (42) is fixed with a pulley three, and one end of the connecting rod (415) is fixed with a pulley four (44). The pulley three and the pulley four (44) are connected by a belt body two (45) for transmission.

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