Flexographic printing unit

Abstract

The utility model relates to the technical field of flexographic printing equipment, in particular to a flexographic printing unit. The flexible printing machine comprises a machine base, a discharging mechanism, a flexible printing mechanism, a die cutting mechanism, a waste collecting mechanism and a material collecting mechanism, the discharging mechanism comprises a discharging rotating shaft, the material collecting mechanism comprises a material collecting rotating shaft and a material collecting driving mechanism for driving the material collecting rotating shaft to rotate, and lifting mechanisms capable of driving the discharging rotating shaft and the material collecting rotating shaft to ascend and descend are arranged on the machine base. Carrying mechanisms are arranged below the discharging rotating shaft and the receiving rotating shaft, and a slitting mechanism for slitting the printed material subjected to die cutting is further arranged between the die cutting mechanism and the receiving mechanism. After the prior art is improved, the height of a rotating shaft for placing a printing stock roll at the discharging mechanism and the receiving mechanism can be automatically adjusted, and time and labor are saved when the printing stock roll is manually loaded, mounted or unloaded in cooperation with the sliding carrying device arranged below; and after die cutting, longitudinal slitting can be supported to adjust the width size of the printing material.

Description

Technical Field

[0001] The utility model relates to the technical field of flexographic printing equipment, in particular to a flexographic printing unit. Background Art

[0002] The in-line flexographic printing press is one of the most widely used models in the world today. Each printing unit is independent of each other and arranged in a straight line horizontally. The main motor is located at the rear of the die-cutting unit with the largest load, and then transmits power to other units through a common drive shaft at the rear of the machine. It belongs to light-pressure printing and is very suitable for printing materials that are not easily stretched.

[0003] For example, a Chinese patent document with the authorization number CN210759750U discloses an in-line flexographic printing press, which includes a machine base, a servo feeding mechanism, a flexographic printing mechanism, a die-cutting mechanism, an observation mechanism, and a servo winding mechanism; the flexographic printing mechanism sequentially includes a first group of flexographic printing units, a second group of flexographic printing units, a third group of flexographic printing units, and a fourth group of flexographic printing units according to the process sequence; each group of flexographic printing units includes a number of flexographic printing seats, and the number of flexographic printing seats is arranged in sequence according to the process sequence; on one side of the first group of flexographic printing units, there is a reversing frame for reversing the printing material, and the input end of the reversing frame is respectively connected to the output end of the front traction mechanism and the output end of the second-to-last flexographic printing seat of the first group of flexographic printing units according to the process sequence, and the output end of the reversing frame is connected to the input end of the last flexographic printing seat of the first group of flexographic printing units according to the process sequence; a cold stamping mechanism is arranged on one side of the flexographic printing mechanism; however, the height of the rotating shaft for placing the printing material roll at the servo feeding mechanism and the servo winding mechanism cannot be adjusted, and it is time-consuming and laborious to manually load and install or unload and disassemble the printing material roll. In addition, it does not support the slitting function, and the width size of the printing material cannot be adjusted according to the design requirements after die-cutting.

[0004] Therefore, it is necessary to improve the deficiencies of the above prior art. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a flexographic printing unit aiming at the deficiencies of the above prior art, so as to solve the problems that the height of the rotating shaft for placing the printing material roll at the servo feeding mechanism and the servo winding mechanism in the prior art cannot be adjusted, it is time-consuming and laborious to manually load and install or unload and disassemble the printing material roll, and it does not support the slitting function, and the size of the printing material cannot be adjusted according to the design requirements after die-cutting.

[0006] To achieve the above object, the utility model provides the following technical solution: A flexographic printing unit, comprising a machine base and a feeding mechanism, a plurality of flexographic printing mechanisms for flexographically printing a substrate, a die-cutting mechanism for die-cutting the substrate after flexographic printing, a waste collection mechanism for collecting waste generated after die-cutting, and a winding mechanism, which are sequentially arranged on the machine base according to the process sequence. The feeding mechanism includes a feeding rotating shaft, the winding mechanism includes a winding rotating shaft and a winding driving mechanism for driving the winding rotating shaft to rotate. The machine base is respectively provided with a lifting mechanism capable of driving the feeding rotating shaft and the winding rotating shaft to move up and down. Below the feeding rotating shaft and the winding rotating shaft, there is a transporting mechanism capable of driving the substrate roll to slide axially. A slitting mechanism for slitting the substrate after die-cutting is further provided between the die-cutting mechanism and the winding mechanism.

[0007] With the above technical solution, when it is necessary to install the substrate roll for feeding, the transporting mechanism can be first slid to one side of the feeding rotating shaft, then the substrate roll is placed on the transporting mechanism, and after the feeding rotating shaft is lowered to an appropriate height through the lifting mechanism, the transporting mechanism is pushed to slide so that the feeding rotating shaft is inserted into the installation axis of the substrate roll, and then the feeding rotating shaft is raised to an appropriate height through the lifting mechanism again to complete one installation and feeding. Similarly, when replacing and disassembling the substrate roll, the reverse operation can be performed; similarly, the installation and disassembly operation methods of the substrate roll at the winding rotating shaft are the same; in this process, it is time-saving and labor-saving for manual feeding and installation or unloading and disassembly of the substrate roll. By further providing a slitting mechanism between the die-cutting mechanism and the winding mechanism, the width dimension of the substrate can be further adjusted after die-cutting to ensure that the printed product meets the expected size requirements.

[0008] The further setting of the above technical solution is: The lifting mechanism includes a vertically strip-shaped mounting hole provided on the side of the machine base, a lifting slide plate slidably connected to the machine base up and down, and a lifting cylinder with one end connected to the lifting slide plate and the other end fixed to the machine base. Both the feeding rotating shaft and the winding rotating shaft are rotatably connected to the lifting slide plate.

[0009] With the above technical solution, when it is necessary to adjust the height of the feeding rotating shaft or the winding rotating shaft, the lifting cylinder is controlled to drive the lifting slide plate to slide up and down along the mounting hole of the machine base, and the lifting slide plate drives the feeding rotating shaft or the winding rotating shaft to move up and down, so as to automatically adjust the height of the feeding rotating shaft or the winding rotating shaft according to the scene requirements.

[0010] The further setting of the above technical solution is: The transporting mechanism includes a track plate and a transporting table slidably connected to the track plate through pulleys. A first handle is provided on the side of the transporting table away from the machine base, and an arc-shaped groove capable of limiting the substrate roll is provided at the upper end of the transporting table.

[0011] By adopting the above technical solution, after the printing material roll is placed on the carrier, the carrier can be pushed and pulled along the track on the track plate through the pulley to drive the printing material roll for loading or unloading. The arc-shaped groove on the upper end of the carrier limits the printing material roll to make it stable and prevent it from rolling down, so that the operation process is relatively labor-saving.

[0012] The above technical solution is further configured as follows: the material receiving drive mechanism includes a material receiving drive motor installed on the lifting slide and a material receiving linkage gear arranged at one end of the material receiving shaft, and the output end of the material receiving drive motor is connected to the material receiving linkage gear through a synchronous belt transmission.

[0013] By adopting the above technical solution, when the machine is printing, the receiving drive motor is started to drive the receiving linkage gear and the receiving shaft to rotate, and the receiving shaft drives the printing material roll to rotate to receive the material.

[0014] The above technical solution is further configured as follows: the slitting mechanism includes a slitting drive motor installed on a machine base, a slitting drive shaft connected to the slitting drive motor, a first slitting roller gear-driven to the slitting drive shaft, and a second slitting roller gear-driven to one end of the first slitting roller, the first slitting roller and the second slitting roller are respectively provided with slitting knives that cooperate with each other, one side of the first slitting roller is provided with a first guide roller and a second guide roller distributed up and down, and the other side is provided with a third guide roller and a fourth guide roller distributed up and down.

[0015] By adopting the above technical scheme, the die-cutting printing material passes through the second guide roller, the first guide roller, between the first slitting roller and the second slitting roller, the third guide roller, and the fourth guide roller in sequence. The slitting drive motor drives the slitting drive shaft to rotate the first slitting roller and the second slitting roller, and the printing material is cut longitudinally by the slitting knives installed on the first slitting roller and the second slitting roller.

[0016] The above technical solution is further configured as follows: a protective cover installed on the side of the machine base is provided above the second slitting roller, a drawer rail is provided between the protective cover and the machine base, the protective cover is installed on the drawer rail so that the protective cover can slide along the axial direction of the second slitting roller, and a second handle is provided on the upper end of the protective cover.

[0017] By adopting the above technical solution, the protective cover can play a safety protection role when the machine is working; when the printing material needs to be inserted, the second handle can be pushed to slide the protective cover away, which is convenient for operation.

[0018] The above technical solution is further configured as follows: a deviation correction mechanism, a corona mechanism and a dust removal mechanism are sequentially arranged above the discharge shaft.

[0019] With the above technical solution, the corona mechanism is used to improve the adhesion of the surface ink, coating and adhesive of the printing stock; the deviation during printing can be reduced by the deviation correction mechanism, ensuring the processing accuracy; the dust removal mechanism can clean the dust and impurities on the printing stock; thus, the printing quality is improved.

[0020] The further setting of the above technical solution is as follows: a monitoring slide bar installed on the machine base is provided between the flexographic printing mechanism and the die-cutting mechanism, a stroboscope is slidably connected to the monitoring slide bar, and two horizontally arranged fifth guide rollers are provided below the stroboscope.

[0021] With the above technical solution, the printing stock passes under the fifth guide roller, and after the stroboscope takes a picture of the printed printing stock, the printing quality is detected through the control system, which is convenient for timely shutdown and processing in case of problems.

[0022] The beneficial effects achieved by the present utility model are as follows: the heights of the rotating shafts for placing the printing stock rolls at the unwinding mechanism and the rewinding mechanism can be automatically adjusted, and in cooperation with the sliding carrier device provided below, it is time-saving and labor-saving when manually loading and installing or unloading and disassembling the printing stock rolls; after die-cutting, it can support longitudinal slitting to adjust the width dimension of the printing stock. Description of the Drawings

[0023] Figure 1 is the structural schematic diagram of the embodiment of the present utility model;

[0024] Figure 2 is Figure 1 the partial view at A in

[0025] Figure 3 is the cross-sectional view of the embodiment of the present utility model;

[0026] Figure 4 is the related structural schematic diagram of the lifting mechanism and the rewinding driving mechanism in the embodiment of the present utility model;

[0027] Figure 5 is the structural schematic diagram of the slitting mechanism in the embodiment of the present utility model;

[0028] Figure 6 is the related structural schematic diagram at the stroboscope in the embodiment of the present utility model. Detailed Embodiments

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0030] As shown Figure 1-4 in the figure, a flexographic printing unit includes a machine base 1, a feeding mechanism 2, a plurality of flexographic printing mechanisms 3 for flexographically printing a substrate, a die-cutting mechanism 4 for die-cutting the substrate after flexographic printing, a waste collection mechanism 5 for collecting waste generated after die-cutting, and a winding mechanism 6. The feeding mechanism 2 includes a feeding rotating shaft 20, and the winding mechanism 6 includes a winding rotating shaft 60 and a winding driving mechanism for driving the winding rotating shaft 60 to rotate. A lifting mechanism 7 capable of driving the feeding rotating shaft 20 and the winding rotating shaft 60 to move up and down is respectively provided on the machine base 1. A transporting mechanism 8 capable of driving the printing material roll to slide axially is provided below both the feeding rotating shaft 20 and the winding rotating shaft 60. A cutting mechanism 9 for cutting the substrate after die-cutting is further provided between the die-cutting mechanism 4 and the winding mechanism 6; the lifting mechanism 7 includes a vertically strip-shaped mounting hole 70 provided on the side of the machine base 1, a lifting slide plate 71 slidably connected to the machine base 1 up and down, and a lifting cylinder 72 with one end connected to the lifting slide plate 71 and the other end fixed to the machine base 1. Both the feeding rotating shaft 20 and the winding rotating shaft 60 are rotatably connected to the lifting slide plate 71; the winding driving mechanism includes a winding driving motor 61 mounted on the lifting slide plate 71 and a winding linkage gear 62 provided at one end of the winding rotating shaft 60. The output end of the winding driving motor 61 is connected to the winding linkage gear 62 through a synchronous belt drive.

[0031] As shown Figure 2 in the figure, the transporting mechanism 8 includes a track plate 81 and a transporting table 82 slidably connected to the track plate 81 through pulleys. A first handle 83 is provided on the side of the transporting table 82 away from the machine base 1, and an arc-shaped groove 820 capable of limiting the printing material roll is provided at the upper end of the transporting table 82.

[0032] As shown Figure 3 、 5 in the figure, the cutting mechanism 9 includes a cutting driving motor 91 mounted on the machine base 1, a cutting driving rotating shaft 92 drivingly connected to the cutting driving motor 91, a first cutting roller 93 in gear transmission with the cutting driving rotating shaft 92, and a second cutting roller 94 in gear transmission with one end of the first cutting roller 93. Cutting knives 95 cooperating with each other are respectively mounted on the first cutting roller 93 and the second cutting roller 94. A first guiding roller 96 and a second guiding roller 97 are provided on one side of the first cutting roller 93 in an up-and-down distribution, and a third guiding roller 98 and a fourth guiding roller 99 are provided on the other side in an up-and-down distribution. A protective cover 90 is provided above the second cutting roller 94 on the side of the machine base 1. A drawer track 901 is provided between the protective cover 90 and the machine base 1. The protective cover 90 is mounted on the drawer track 901 so that the protective cover 90 can slide axially along the second cutting roller 94. A second handle 900 is provided at the upper end of the protective cover 90.

[0033] As shown Figure 1As shown in the figure, a deviation rectifying mechanism 11, a corona mechanism 12, and a dust removing mechanism 13 are successively arranged above the feeding rotating shaft 20. The corona mechanism 12 is used to improve the adhesion of the surface ink, coating, and adhesive of the printing stock. The deviation rectifying mechanism 11 can reduce the deviation during printing and ensure the processing accuracy. The dust removing mechanism 13 can clean the dust and impurities on the printing stock, thereby improving the printing quality.

[0034] As Figure 3 , 6 As shown in the figure, a monitoring slide bar 14 installed on the machine base 1 is arranged between the flexographic printing mechanism 3 and the die-cutting mechanism 4. A stroboscope 15 is slidably connected to the monitoring slide bar 14, and two horizontally arranged fifth guide rollers 16 are arranged below the stroboscope 15.

[0035] In the above embodiment, when it is necessary to install the printing stock roll for feeding, the carrying mechanism 8 can be first slid to one side of the feeding rotating shaft 20, and then the printing stock roll is placed on the carrying mechanism 8. After the feeding rotating shaft 20 is lowered to a suitable height through the lifting mechanism 7, the feeding rotating shaft 20 is inserted into the installation axis of the printing stock roll by pushing the carrying mechanism 8 to slide. Then, the feeding rotating shaft 20 is raised to a suitable height again through the lifting mechanism 7 to complete one installation and feeding operation. Similarly, when replacing and disassembling the printing stock roll, the reverse operation can be performed. Similarly, the installation and disassembly operation methods of the printing stock roll at the winding rotating shaft are the same. During this process, it is time-saving and labor-saving for manual feeding, installation, or discharging and disassembly of the printing stock roll. By further providing a slitting mechanism 9 between the die-cutting mechanism 4 and the winding mechanism 6, the width dimension of the printing stock can be further adjusted after die-cutting to ensure that the printed product meets the expected size requirements.

Claims

1. A flexographic printing unit, comprising a machine base and a feeding mechanism, a plurality of flexographic printing mechanisms for flexographically printing a printing substrate, a die-cutting mechanism for die-cutting the printing substrate after flexographic printing, a waste collection mechanism for collecting waste generated after die-cutting, and a winding mechanism, which are sequentially arranged on the machine base according to the process sequence. The feeding mechanism includes a feeding rotating shaft, and the winding mechanism includes a winding rotating shaft and a winding driving mechanism for driving the winding rotating shaft to rotate, wherein: The machine base is respectively provided with a lifting mechanism capable of driving the unloading shaft and the receiving shaft to move up and down; a carrying mechanism capable of driving the printing material roll to slide axially is provided below the unloading shaft and the receiving shaft; a slitting mechanism for slitting the printing material after die-cutting is also provided between the die-cutting mechanism and the receiving mechanism.

2. The flexographic printing unit according to claim 1, characterized in that: The lifting mechanism includes a vertical strip-shaped mounting hole arranged on the side of the machine base, a lifting slide connected to the machine base for sliding up and down, and a lifting cylinder connected to the lifting slide at one end and fixedly connected to the machine base at the other end. The material discharge shaft and the material collection shaft are both rotatably connected to the lifting slide.

3. A flexographic printing unit according to claim 2, characterized in that: The carrier mechanism comprises a track plate and a carrier platform slidably connected to the track plate via a pulley, a first handle is provided on the side of the carrier platform away from the machine base, and an arc groove is provided on the upper end of the carrier platform for limiting the position of the printing material roll.

4. A flexographic printing unit according to claim 3, characterized in that: The material receiving drive mechanism comprises a material receiving drive motor installed on the lifting slide plate and a material receiving linkage gear arranged at one end of the material receiving rotating shaft. The output end of the material receiving drive motor is connected to the material receiving linkage gear through a synchronous belt transmission.

5. A flexographic printing unit according to claim 4, characterized in that: The slitting mechanism includes a slitting drive motor installed on a machine base, a slitting drive shaft connected to the slitting drive motor, a first slitting roller driven by a gear of the slitting drive shaft, and a second slitting roller driven by a gear of one end of the first slitting roller. The first slitting roller and the second slitting roller are respectively installed with slitting knives that cooperate with each other. One side of the first slitting roller is provided with a first guide roller and a second guide roller distributed up and down, and the other side is provided with a third guide roller and a fourth guide roller distributed up and down.

6. The flexographic printing unit according to claim 5, wherein: A protective cover installed on the side of the machine base is provided above the second slitting roller, a drawer track is provided between the protective cover and the machine base, the protective cover is installed on the drawer track so that the protective cover can slide along the axial direction of the second slitting roller, and a second handle is provided on the upper end of the protective cover.

7. A flexographic printing unit according to claim 6, characterized in that: A deviation correction mechanism, a corona mechanism and a dust removal mechanism are arranged in sequence above the discharging rotating shaft.

8. A flexographic printing unit according to any one of claims 1-7, characterized in that: A monitoring slide bar installed on the machine base is arranged between the flexographic printing mechanism and the die-cutting mechanism, a stroboscope is slidably connected to the monitoring slide bar, and two fifth guide rollers arranged horizontally are arranged below the stroboscope.

Images