An adjustable doctoring device for a gravure printing press

Abstract

The utility model provides a adjustable ink scraping device of gravure printing machine. Adjustable ink scraping device of gravure printing machine, including the device seat of rectangle, the upper surface and the lower surface of device seat all are provided with the adjusting plate who can move along its width direction, two adjusting plates all are provided with the scraping piece structure, two scraping piece structures's structure all are same. The utility model provides adjustable ink scraping device of gravure printing machine, through setting adjusting plate, the scraping piece structure is set up on the adjusting plate in this device, in use, the scraping knife in scraping piece structure will always have a movement tendency to the direction of drum under the tension of multiple tension springs, also just makes the end of scraping knife can always be closely combined with the outer surface of drum, and the device can also change the transverse position of scraping knife by controlling the movement of adjusting plate, adjusts, makes the device when scraping ink can guarantee that the drum surface will not remain ink, thereby improved the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of gravure printing machines, and more particularly to an adjustable ink scraping device for gravure printing machines. Background Technology

[0002] Gravure printing machines are industrial equipment based on gravure printing technology. They are mainly used for mass printing of flexible packaging materials (such as plastic film and paper). They have the characteristics of thick ink layer and high color saturation, and are suitable for printing composite materials such as food packaging and beverage labels.

[0003] During gravure printing, the entire printing plate cylinder is inked. A doctor blade scrapes away the ink from the blank areas of the plate, leaving the ink for the image areas. The impression cylinder then presses the impression onto the back of the paper, transferring the ink from the recessed areas directly to the material. However, the doctor blade structure of current gravure printing machines is relatively simple, mostly a fixed structure that cannot be adjusted. Different images require different printing plate cylinders, so corresponding adjustments are necessary. Otherwise, the doctor blade structure cannot guarantee that the ink on the cylinder surface will be completely removed.

[0004] Therefore, it is necessary to provide an adjustable squeegee device for a gravure printing machine to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides an adjustable scraper for a gravure printing machine, which solves the problem that the scraper structure of current gravure printing machines is relatively simple, and most of them are fixed structures that cannot be adjusted. However, different printing plates and cylinders are required for printing different graphics and texts, so corresponding adjustments are necessary. Otherwise, the scraper structure cannot guarantee that the ink on the surface of the cylinder will be completely scraped off.

[0006] To solve the above technical problems, this utility model provides an adjustable squeegee device for a gravure printing machine, including a rectangular device base. The upper and lower surfaces of the device base are provided with adjustment plates that can move along their width direction, and both adjustment plates are provided with squeegee structures.

[0007] Both scraper structures are identical in structure. One scraper structure includes multiple fixed seats fixedly connected to the rear end of the upper surface of the upper adjustment plate. The top of the multiple fixed seats is hinged to a mounting plate extending forward. A scraper adapted to its length is detachably mounted on the outer surface of the upper surface of the mounting plate. Multiple first connecting seats are fixedly connected to the front end of the lower surface of the mounting plate. Multiple second connecting seats, each corresponding to one of the multiple first connecting seats, are fixedly connected to the front end of the upper surface of the adjustment plate. The outer ends of the multiple first connecting seats and the multiple second connecting seats are hinged to hinge blocks. A telescopic rod is fixedly connected between two corresponding hinge blocks and outside the telescopic rod. A tension spring is fixedly connected between two corresponding hinge blocks and outside the telescopic rod.

[0008] Preferably, the upper and lower surfaces of the device base are provided with sliding grooves arranged along their length direction. The interior of each of the two sliding grooves is laterally rotatably connected with multiple threaded rods along the width direction of the device base. The outer surfaces of the multiple threaded rods are threaded with threaded sleeves. The two adjusting plates are slidably connected to the interior of the two sliding grooves and are fixedly connected to the multiple threaded sleeves inside them respectively.

[0009] Preferably, the inside of the slide groove is fixedly connected to a plurality of guide rods in the transverse direction, and the outer surface of the adjusting plate is provided with a plurality of sliding holes corresponding to the plurality of guide rods in the transverse direction. The adjusting plate is slidably connected to the outer surface of the plurality of guide rods through the plurality of sliding holes.

[0010] Preferably, the rear ends of the plurality of threaded rods can rotatably pass through the rear surface of the device base and extend outward, and the rear end surfaces of the plurality of threaded rods located outside the device base are fixedly connected to multi-rail synchronous pulleys, and each pair of adjacent multi-rail synchronous pulleys are connected by a synchronous belt drive.

[0011] Preferably, an adjustment knob is fixedly connected to the rear end surface of the threaded rod in the middle.

[0012] Preferably, multiple support frames are vertically fixedly connected to both sides of the device base, and a support base is horizontally fixedly connected to the bottom end of the multiple support frames on the same side.

[0013] Compared with related technologies, the adjustable scraper device for gravure printing machines provided by this utility model has the following beneficial effects: This utility model provides an adjustable scraper device for gravure printing machines. By setting an adjustment plate, the device has a scraper structure on the adjustment plate. During use, the scraper blade in the scraper structure will always have a tendency to move towards the roller under the tension of multiple tension springs, so that the end of the scraper blade can always be in close contact with the outer surface of the roller. Furthermore, the device can also change the lateral position of the scraper blade by controlling the movement of the adjustment plate, thereby adjusting it so that the device can ensure that no ink remains on the surface of the roller during scraping, thus improving the practicality of the device. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the adjustable squeegee device for a gravure printing machine provided by this utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of the rear structure of the adjustable squeegee device of the gravure printing machine shown;

[0016] Figure 3 for Figure 1 A schematic diagram of the adjustment structure of the adjustment plate of the adjustable doctor blade of the gravure printing machine;

[0017] Figure 4 for Figure 1 The diagram shows a side view of the adjustable squeegee device of a gravure printing machine.

[0018] The following are the labels in the diagram: 1. Device base, 2. Slide groove, 3. Threaded rod, 4. Adjusting plate, 5. Guide rod, 6. Multi-rail synchronous pulley, 7. Fixed base, 8. Mounting plate, 9. Scraper, 10. First connecting seat, 11. Second connecting seat, 12. Tension spring, 13. Adjusting knob, 14. Support frame, 15. Support base. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please refer to the following: Figure 1-3 The adjustable squeegee device of the gravure printing machine includes a rectangular device base 1. The upper and lower surfaces of the device base 1 are provided with adjustment plates 4 that can move along their width direction. Both adjustment plates 4 are provided with squeegee structures.

[0021] Both scraper structures are identical. One scraper structure includes multiple fixed seats 7 fixedly connected to the rear end of the upper surface of the upper adjustment plate 4. The top of the multiple fixed seats 7 is hinged to a mounting plate 8 extending forward. A scraper 9 adapted to its length is detachably mounted on the outer surface of the upper surface of the mounting plate 8. Multiple first connecting seats 10 are fixedly connected to the front end of the lower surface of the mounting plate 8. Multiple second connecting seats 11, corresponding to the multiple first connecting seats 10, are fixedly connected to the front end of the upper surface of the adjustment plate 4. The outer ends of the multiple first connecting seats 10 and the multiple second connecting seats 11 are all hinged to hinge blocks. A telescopic rod is fixedly connected between two corresponding hinge blocks. A tension spring 12 is fixedly connected between two corresponding hinge blocks and outside the telescopic rod.

[0022] The mounting plate 8 in the scraper structure is always subjected to the tension applied by the tension spring 12 below it, so that the mounting plate 8 always has a tendency to move in the direction of the printing cylinder. The scraper 9 installed on it can always be in close contact with the outer surface of the printing cylinder, ensuring the scraping effect of the scraper 9. At the same time, the device is equipped with two scraper structures. The two scraper structures work together to scrape the cylinder surface twice, further improving the device's ability to scrape ink.

[0023] The scraper 9 has through mounting holes, and the upper surface of the mounting plate 8 has screw holes corresponding to multiple mounting holes. The scraper 9 is mounted on the mounting plate 8 with screws, which facilitates replacement and maintenance.

[0024] The upper and lower surfaces of the device base 1 are provided with sliding grooves 2 arranged along their length. Multiple threaded rods 3 are rotatably connected to the interior of the two sliding grooves 2 along the width direction of the device base 1. Threaded sleeves are threadedly connected to the outer surfaces of the multiple threaded rods 3. Two adjusting plates 4 are slidably connected to the interior of the two sliding grooves 2 and are fixedly connected to the multiple threaded sleeves inside them.

[0025] The rear ends of multiple threaded rods 3 can rotatably pass through the rear surface of the device base 1 and extend outward. The rear surfaces of the multiple threaded rods 3 and located outside the device base 1 are all fixedly connected to multi-rail synchronous pulleys 6. Each pair of adjacent multi-rail synchronous pulleys 6 are connected by a synchronous belt drive.

[0026] The device can change the lateral position of the scraper 9 by adjusting the position of the adjusting plate 4, so that it can fit the roller surface at a better angle and ensure the scraping effect. When the position of the adjusting plate 4 needs to be adjusted, one threaded rod 3 is rotated. Since multiple threaded rods 3 are connected by a multi-rail synchronous pulley and a synchronous belt, the multiple threaded rods 3 will rotate synchronously, thereby driving multiple threaded sleeves to move laterally synchronously. Since the adjusting plate 4 is fixedly connected to the threaded sleeves, the adjusting plate 4 will also move laterally synchronously, thereby driving the scraper 9 to move synchronously.

[0027] Multiple guide rods 5 are fixedly connected to the inside of the slide groove 2 in a horizontal direction. Multiple sliding holes corresponding to the multiple guide rods 5 are opened horizontally through the outer surface of the adjusting plate 4. The adjusting plate 4 is slidably connected to the outer surface of the multiple guide rods 5 through the multiple sliding holes.

[0028] The guide rod 5 serves to guide and limit the movement, making the movement of the adjusting plate 4 more stable and smooth.

[0029] An adjustment knob 13 is fixedly connected to the rear end surface of the threaded rod 3 in the middle.

[0030] The adjustment knob 13 makes it easy for people to rotate the threaded rod 3. Its outer surface is provided with anti-slip texture, which can play an anti-slip role.

[0031] Multiple support frames 14 are vertically fixedly connected to both sides of the device base 1, and a support base 15 is horizontally fixedly connected to the bottom end of the multiple support frames 14 on the same side.

[0032] The support frame 14 and the support base 15 are the support structures of the device, used to fix the position of the device. The support base 15 can be fixedly installed in the equipment by welding to ensure the stability of its structure.

[0033] The working principle of the adjustable scraper device for gravure printing machine provided by this utility model is as follows: The device can change the lateral position of the scraper 9 by adjusting the position of the adjusting plate 4, so that it can fit with the roller surface at a better angle and ensure the scraping effect. When the position of the adjusting plate 4 needs to be adjusted, a threaded rod 3 is rotated. Since multiple threaded rods 3 are connected by a multi-rail synchronous pulley and a synchronous belt drive, multiple threaded rods 3 will rotate synchronously, thereby driving multiple threaded sleeves to move laterally synchronously. Since the adjusting plate 4 is fixedly connected to the threaded sleeves, the adjusting plate 4 will also move laterally synchronously, thereby driving the scraper 9 to move synchronously. The mounting plate 8 in the scraper structure is always subjected to the tension applied by the tension spring 12 below it, so that the mounting plate 8 always has a tendency to move towards the printing roller. The scraper 9 installed on it can always fit tightly with the outer surface of the printing roller, ensuring the scraping effect of the scraper 9. At the same time, the device is provided with two scraper structures. The two scraper structures cooperate with each other to scrape the roller surface twice, further improving the scraping ability of the device.

[0034] Compared with related technologies, the adjustable scraping device for gravure printing machines provided by this utility model has the following beneficial effects: the device is equipped with an adjustment plate 4, on which a scraper structure is provided. During use, the scraper blade 9 in the scraper structure will always have a tendency to move towards the roller under the pulling force of multiple tension springs 12, which makes the end of the scraper blade 9 always closely fit with the outer surface of the roller. Furthermore, the device can also change the lateral position of the scraper blade 9 by controlling the movement of the adjustment plate 4, thereby adjusting it so that the device can ensure that no ink remains on the surface of the roller when scraping ink, thus improving the practicality of the device.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An adjustable doctoring device for an intaglio printing press, characterized in that: The device includes a rectangular base (1), and both the upper and lower surfaces of the base (1) are provided with adjustment plates (4) that can move along their width direction. Both adjustment plates (4) are provided with scraper structures. Both scraper structures are identical in structure. One of the scraper structures includes multiple fixed seats (7) fixedly connected to the rear end of the upper surface of the upper adjustment plate (4). The top of the multiple fixed seats (7) is hinged to an outer end extending forward, and a scraper (9) adapted to its length is detachably installed on the outer surface of the upper surface of the mounting plate (8). Multiple first connecting seats (10) are fixedly connected to the front end of the lower surface of the mounting plate (8). Multiple second connecting seats (11) corresponding to the multiple first connecting seats (10) are fixedly connected to the front end of the upper surface of the adjustment plate (4). The outer ends of the multiple first connecting seats (10) and the multiple second connecting seats (11) are all hinged to hinge blocks. A telescopic rod is fixedly connected between two corresponding hinge blocks. A tension spring (12) is fixedly connected between two corresponding hinge blocks and outside the telescopic rod.

2. The adjustable doctoring device of an intaglio printing press according to claim 1, characterized in that The upper and lower surfaces of the device base (1) are provided with sliding grooves (2) arranged along their length direction. The interior of each of the two sliding grooves (2) is laterally rotatably connected with multiple threaded rods (3) along the width direction of the device base (1). The outer surfaces of the multiple threaded rods (3) are threadedly connected with threaded sleeves. The two adjusting plates (4) are slidably connected to the interior of the two sliding grooves (2) and are fixedly connected to the multiple threaded sleeves inside them respectively.

3. The adjustable doctoring device of an intaglio printing press according to claim 2, characterized in that The sliding groove (2) is laterally fixedly connected to a plurality of guide rods (5), and the outer surface of the adjusting plate (4) is laterally opened with a plurality of sliding holes corresponding to the plurality of guide rods (5). The adjusting plate (4) is slidably connected to the outer surface of the plurality of guide rods (5) through the plurality of sliding holes.

4. The adjustable doctoring device of the gravure printing press according to claim 2, characterized in that, The rear ends of the plurality of threaded rods (3) can rotatably pass through the rear surface of the device base (1) and extend outward. The rear end surfaces of the plurality of threaded rods (3) and located outside the device base (1) are all fixedly connected to multi-rail synchronous pulleys (6). Each pair of adjacent multi-rail synchronous pulleys (6) are connected by a synchronous belt drive.

5. The adjustable doctoring device of the gravure printing press according to claim 4, characterized in that, An adjustment knob (13) is fixedly connected to the rear end surface of the threaded rod (3) in the middle.

6. The adjustable doctoring device of an intaglio printing press according to claim 1, characterized in that Multiple support frames (14) are vertically fixedly connected to both sides of the device base (1), and a support base (15) is horizontally fixedly connected to the bottom end of the multiple support frames (14) on the same side.

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