CN-121973552-A - Satellite type multi-working-procedure integrated digital printing device and printing method

CN121973552ACN 121973552 ACN121973552 ACN 121973552ACN-121973552-A

Abstract

The invention provides a satellite type multi-station integrated digital printing device and a printing method, which relate to the technical field of printing devices, wherein the printing device comprises a constant-temperature large roller, a first conveying roller and a second conveying roller are symmetrically arranged at two sides of the constant-temperature large roller, multi-station operation mechanisms are positioned and installed by taking the constant-temperature large roller as a reference, the printing substrate is led in by the first conveying roller, is led out by the second conveying roller after being extended and distributed along the outer cylindrical surface of the constant temperature large roller, and the first conveying roller, the second conveying roller and the constant temperature large roller cooperate to enable the printing substrate to be kept in a tensioning state and closely attached to the outer surface of the constant temperature large roller. According to the invention, the multi-working-procedure working mechanism is used for positioning and mounting by taking the constant-temperature large roller as a uniform reference, and the first conveying roller, the second conveying roller and the constant-temperature large roller are cooperated to enable the base material to be tensioned and attached, so that the problem of poor alignment precision caused by the fact that the traditional equipment does not have the uniform positioning reference in multiple procedures is solved, the transmission vibration of the base material is restrained, and the coating uniformity is improved.

Inventors

XUE ZHICHENG
LI YANFENG
WANG KUN
DU RUI
WANG YAN
GAO BAOLEI

Assignees

北人智能装备科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260309

Claims (10)

1. The satellite type multi-station integrated digital printing device is characterized by comprising a constant-temperature large roller (1), a first conveying roller (2), a second conveying roller (3) and a multi-station operation mechanism, wherein the first conveying roller (2) and the second conveying roller (3) are symmetrically arranged on two sides of the constant-temperature large roller (1), the multi-station operation mechanism is sequentially arranged along the circumferential outer side surface of the constant-temperature large roller (1), the multi-station operation mechanism is positioned and installed by taking the constant-temperature large roller (1) as a reference, the multi-station operation mechanism comprises a precoating mechanism (4), a first drying mechanism (5), a digital printing mechanism (6), an inter-group drying mechanism (7), an oil-polishing mechanism (8) and a second drying mechanism (9), a printing substrate is guided in through the first conveying roller (2), and is led out by the second conveying roller (3) after being arranged along the outer cylindrical surface of the constant-temperature large roller (1), the first conveying roller (2), the second conveying roller (3) and the constant-temperature large roller (1) act cooperatively, so that the printing substrate is kept in a tensioning state and is tightly attached to the outer surface of the constant-temperature large roller (1), and the tension adjusting assembly (2) is arranged below the constant-temperature large roller (1), and the tension adjusting assembly is used for adjusting the tension of the printing substrate.
2. The satellite type multi-station integrated digital printing device according to claim 1, wherein the digital printing mechanism (6) comprises a plurality of printing nozzle groups, the printing nozzle groups are sequentially distributed along the circumferential direction of the constant temperature large roller (1), the jet printing ends of the printing nozzle groups are perpendicular to the surface of the constant temperature large roller (1), a group of component drying mechanisms (7) are distributed between any two printing nozzle groups, each group of inter-group drying mechanisms (7) is configured on one side, facing the second conveying roller (3), of the corresponding printing nozzle group, and the drying operation ends of the inter-group drying mechanisms (7) face the printing substrate attaching area on the outer surface of the constant temperature large roller (1).
3. The satellite type multi-station integrated digital printing device according to claim 1, wherein the constant temperature large roller (1) comprises an inner cylinder (10) and an outer cylinder (11) which are coaxially arranged, the outer cylinder (11) is fixedly sleeved outside the inner cylinder (10), a spiral flow passage (12) is formed in the inner wall of the inner cylinder (10), the spiral flow passage (12) is axially extended along the inner cylinder (10), two ends of the spiral flow passage (12) are respectively provided with a fluid communication port (13), a central hole is formed in a mandrel of the constant temperature large roller (1), the central hole is communicated with the fluid communication ports (13), a rotary joint is assembled on the mandrel, one end of the rotary joint, far away from the constant temperature large roller (1), is correspondingly connected with a conveying pipe, one conveying pipe is communicated with a temperature control water tank, a heater is arranged in the temperature control water tank, the other conveying pipe is communicated with the input end of a circulating pump, and the output end of the circulating pump is communicated with the inside the temperature control water tank to form a temperature control fluid circulation loop.
4. The satellite type multi-station integrated digital printing device according to claim 1, wherein the first conveying roller (2), the second conveying roller (3) and the constant temperature big roller (1) are arranged in a triangular linkage positioning mode, the first conveying roller (2) and the second conveying roller (3) are constant diameter guide tensioning rollers, the outer diameter size of the constant temperature big roller (1) is 6-10 times that of the first conveying roller (2) and the second conveying roller (3), and the minimum radial vertical distance between the roller surfaces of the first conveying roller (2) and the second conveying roller (3) and the outer cylindrical surface of the constant temperature big roller (1) is 3-5 mm.
5. The satellite type multi-station integrated digital printing device according to claim 1, further comprising an equipment rack, wherein the constant-temperature large roller (1) is rotatably arranged on the equipment rack, the tension adjusting assembly comprises a supporting platform (14), the supporting platform (14) is arranged at the bottom of the equipment rack, rotating shafts (15) are correspondingly arranged at the front end and the rear end of the first conveying roller (2) and the second conveying roller (3), rolling elements (16) are sleeved outside the rotating shafts (15), the rolling elements (16) are slidably embedded in the arc-shaped grooves (17), the arc-shaped grooves (17) are formed in the inner sides of the arc-shaped supporting frames (18), the bottoms of the arc-shaped supporting frames (18) are fixedly connected with the upper surface of the supporting platform (14) through a plurality of supporting columns (19), the arc-shaped grooves (17) are concentrically distributed by taking the center of the constant-temperature large roller (1) as the center, adjusting mechanisms are symmetrically arranged at the front side and the rear side of the supporting platform (14) and are used for adjusting the positions of the rolling elements (16) in the arc-shaped grooves (17), and then the positions of the first conveying roller (2) and the second conveying roller (1) are adjusted relatively.
6. The satellite type multi-station integrated digital printing device according to claim 5, wherein the adjusting mechanism comprises two fixing plates (20), the two fixing plates (20) are symmetrically arranged at the left side and the right side of the constant temperature large roller (1), the lower ends of the fixing plates (20) are fixedly connected with the upper surface of the supporting platform (14), a double-rotation-direction screw rod (21) is arranged between the two fixing plates (20), one end of the double-rotation-direction screw rod (21) extends to the outside of the fixing plates (20) and is provided with a driving motor (22), the driving motor (22) is fixedly connected with the upper surface of the supporting platform (14), the double-rotation-direction screw rod (21) is provided with external threads with opposite rotation directions, the outer sides of opposite rotation directions at two ends of the double-rotation-direction screw rod (21) are respectively connected with a moving block (23), the lower ends of the moving blocks (23) are in sliding connection with the upper surface of the supporting platform (14), a driving rod (24) is arranged at the upper ends of the moving blocks (23), a strip guide groove (25) is arranged in the driving rod (24), one end of the driving rod (24) is arranged along the length direction of the driving rod (24), the driving rod (24) is higher than the upper end of the driving rod (18) and the upper end of the driving rod (18) is lower end of the rectangular supporting rod (26) is arranged at the lower end of the arc-shaped sliding support frame (26), the rectangular sliding block (26) is rotationally connected with the end part of the rotating shaft (15).
7. The satellite type multi-station integrated digital printing device according to claim 6, wherein a connecting block (27) is fixedly arranged at the upper end of the driving rod (24), a guide hole is formed in the connecting block (27), a guide rod (28) is slidably arranged in the guide hole, and the left end and the right end of the guide rod (28) are fixedly connected with the side walls of the fixed plates (20) on the left side and the right side respectively.
8. The satellite type multi-process integrated digital printing device according to claim 6, wherein the first conveying roller (2) is provided with a tension sensor, the tension sensor is used for detecting an actual tension value of a printing substrate in real time, the rectangular sliding block (26) is provided with an angle sensor, the angle sensor is used for collecting a deflection angle of the rectangular sliding block (26) in real time, the deflection angle is defined as an acute angle formed between a connecting line of the center of the first conveying roller (2) and the center of the constant temperature large roller (1) and a vertical center line of the center of the over-constant temperature large roller (1), the supporting platform (14) is fixedly provided with a first controller, the first controller is respectively and electrically connected with the tension sensor, the angle sensor and the driving motor (22), the first controller is configured to control the driving motor (22) to work based on detection signals of the tension sensor, the first controller comprises calculating a tension deviation value according to the actual tension value and a preset reference tension value, when the absolute value of the tension deviation value exceeds a preset tension threshold, the first controller automatically calculates an angle compensation amount, and sends a control command to the driving motor (22) based on the angle compensation amount, and the first controller sends a control command to the rectangular sliding block (26) to adjust the driving angle to a target deflection angle.
9. The satellite-type multi-process integrated digital printing device according to claim 3, wherein a first temperature sensor is arranged in a conveying pipe communicated with the temperature control water tank, the first temperature sensor is used for collecting the liquid inlet temperature in the conveying pipe communicated with the temperature control water tank, a second temperature sensor is arranged in the conveying pipe communicated with the circulating pump, the second temperature sensor is used for collecting the liquid return temperature in the conveying pipe communicated with the circulating pump, a second controller is arranged outside the temperature control water tank, the second controller is respectively and electrically connected with the heater, the first temperature sensor, the second temperature sensor and the circulating pump, and the second controller is used for controlling the circulating pump and the heater to work based on the temperatures collected by the first temperature sensor and the second temperature sensor, and comprises the following steps: Collecting the liquid inlet temperature in a conveying pipe communicated with a temperature control water tank through a first temperature sensor, and collecting the liquid return temperature in the conveying pipe communicated with a circulating pump through a second temperature sensor; setting a preset target temperature corresponding to the surface of the constant-temperature large roller, wherein the preset target temperature is 28-33 ℃; According to the collected liquid inlet temperature, liquid return temperature and set preset target temperature, calculating a heat exchange characteristic coefficient of the temperature control system at the current moment, wherein the heat exchange characteristic coefficient is calculated by the following formula: ; Wherein, the Is the heat exchange characteristic coefficient at the i-th moment, The temperature of the inlet liquid at the ith moment, The temperature of the returned liquid at the ith moment is T 3 which is a preset target temperature; Comparing the current heat exchange characteristic coefficient with a preset heat exchange characteristic coefficient, and regulating and controlling the liquid inlet temperature according to the comparison result, wherein the liquid inlet temperature is increased if the current heat exchange characteristic coefficient is smaller than the preset heat exchange characteristic coefficient, the liquid inlet temperature is reduced if the current heat exchange characteristic coefficient is larger than the preset heat exchange characteristic coefficient, and the liquid inlet temperature is kept unchanged if the current heat exchange characteristic coefficient is equal to the preset heat exchange characteristic coefficient.
10. A satellite type multi-station integrated digital printing method, which uses the satellite type multi-station integrated digital printing device according to any one of claims 1 to 9 for printing, comprising the steps of: S1, enabling a printing substrate to pass through a first conveying roller (2) and be attached to the surface of a constant-temperature large roller (1), enabling the printing substrate to pass through a second conveying roller (3), and then adjusting the tension of the printing substrate by adjusting the positions of the first conveying roller (2) and the second conveying roller (3) based on a tension adjusting assembly, and tensioning according to the adjusted tension; S2, coating a precoating solution on a printing substrate on the surface of the constant-temperature large roller (1) through a precoating mechanism (4), and enabling the printing substrate to rotate to a first drying mechanism (5) along with the constant-temperature large roller (1), wherein the precoating solution is dried by the first drying mechanism (5) to finish pre-printing treatment; S3, the printing substrate subjected to pre-printing treatment rotates to a digital printing mechanism (6) along with the constant temperature large roller (1), graphics and texts are sprayed to the printing substrate through the digital printing mechanism (6), and ink is dried through an inter-group drying mechanism (7); s4, the printing substrate rotates to a gloss oil mechanism (8) along with the constant temperature large roller (1), the gloss oil mechanism (8) coats gloss oil on the image-text surface of the printing substrate, then the printing substrate rotates to a second drying mechanism (9), and the gloss oil is dried by the second drying mechanism (9); and S5, enabling the printing base material subjected to gloss oil drying to pass through a second conveying roller (3) to realize finished product discharging, and finishing printing operation.

Description

Satellite type multi-working-procedure integrated digital printing device and printing method Technical Field The invention relates to the technical field of printing devices, in particular to a satellite type multi-station integrated digital printing device and a printing method. Background With the continuous growth of the iterative upgrading of digital information technology and the personalized and customized demands of the printing market, the digital printing technology has become a core development direction in the field of printing equipment by virtue of the technical characteristics of high efficiency, flexibility and on-demand production. However, the short board of systematic technology commonly exists in the traditional digital printing equipment, and is difficult to adapt to the printing production requirements of high quality and high adaptability, and the specific defects are as follows: Firstly, the process integration degree is low, core printing processes such as precoating, digital spray printing, glazing and the like are completed by being matched with a plurality of independent devices, and each process operation unit lacks a uniform positioning reference and a cooperative operation reference, so that the printing registration control precision is insufficient, the problems of registration deviation of printed matters, alignment deviation of precoating and glazing processes and printing pictures and texts are outstanding, and the finished product reject ratio is high; secondly, the substrate transmission stability is poor, the printed substrate is easy to shake, shift and the like in the multi-station transmission circulation process, the dot reduction effect of the spray printing pattern is poor, the coating uniformity of the precoating medium and the glazing coating is easy to be reduced, and the apparent quality of a printed product is directly influenced; Thirdly, the temperature control adaptability of the base material is poor, the temperature of the printing base material is easy to be interfered by an external operation environment, the temperature fluctuation of the base materials made of different materials in the printing process can generate direct adverse effects on the curing and forming of printing ink and the attaching effect of a coating, the equipment has strict requirements on the temperature and humidity conditions of the operation environment, and the overall environment adaptation capability is limited; Fourth, the equipment process flexibility is not enough, the equipment operation function solidification is single, can not increase and decrease in a flexible way according to actual printing process demand, adjusts the operation process, is difficult to adapt to the flexible printing production demand of small batch, many kinds, customization. The industrial commonality technical bottleneck severely restricts the printing precision, production efficiency and application scene expansion of the digital printing equipment, and cannot meet the core requirements of the high-end printing field on high-quality, high-adaptability and high-intelligent production, so that the research and development of high-integration, high-precision and self-adaptive digital printing equipment becomes a technical problem to be solved urgently in the printing industry. Disclosure of Invention The invention provides a satellite type multi-station integrated digital printing device and a printing method, which are used for solving at least one technical problem in the background technology. The invention discloses a satellite type multi-station integrated digital printing device which comprises a constant temperature large roller, a first conveying roller, a second conveying roller and a multi-station operation mechanism, wherein the first conveying roller and the second conveying roller are symmetrically arranged on two sides of the constant temperature large roller, the multi-station operation mechanism is sequentially arranged along the circumferential outer side surface of the constant temperature large roller, the multi-station operation mechanism is positioned and installed by taking the constant temperature large roller as a reference, the multi-station operation mechanism comprises a precoating mechanism, a first drying mechanism, a digital printing mechanism, an inter-group drying mechanism, an optical oil mechanism and a second drying mechanism, a printing substrate is guided by the first conveying roller, and is guided out by the second conveying roller after being arranged along the outer cylindrical surface of the constant temperature large roller in an extending mode, the first conveying roller, the second conveying roller and the constant temperature large roller act in a coordinated mode, so that the printing substrate keeps a tensioning state and is tightly attached to the outer surface of the constant temperature large roller, and a tension adjusting component is arranged