Scraper device of printing machine

Abstract

The utility model discloses a printing machine scraper device which comprises side plates, a first connecting shaft is movably arranged on one side of the interior of each side plate through a bearing, a printing roller is fixedly arranged on the surface of the outer side of each first connecting shaft, and a scraper mechanism is arranged between the side plates and located on one side of the printing roller. And the scraper mechanism comprises a second connecting shaft, a spline, a connecting sleeve and a scraper assembly, the second connecting shaft is movably arranged between the side plates and located on one side of the printing roller through a bearing, the spline is fixedly arranged on the outer side surface of the second connecting shaft, and the connecting sleeve is movably arranged on the outer side surfaces of the second connecting shaft and the spline in a sleeving mode. The ink scraping device is good in using effect, the scraper assembly is linked with the printing roller, it is guaranteed that the scraper scrapes redundant ink, meanwhile, the scraper can move left and right periodically, fixed-point friction between a scraper blade of the scraper and the concave position of the printing roller is prevented, abrasion of a fixed stop point is avoided, the scraper blade can be prevented from being damaged too fast, and the service life of the scraper is prolonged. And the service life of the scraper is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of printing press scrapers, in particular to a printing press scraper device. Background Technique

[0002] The scraper component is the main mechanism of the intaglio printing press. The function of the scraper is to scrape off the unnecessary ink from the printing plate so that the ink on the part with graphics and text can be clearly transferred to the material to be printed. The quality of the scraper component often determines the quality of the printed product.

[0003] However, when the printing press scraper device in the prior art is in use, since the scraper cannot move horizontally left and right, fixed-point friction easily occurs between the scraping blade and the concave part of the printing roller. In this way, the blade is easily damaged, affecting the service life of the blade. Therefore, an improved printing press scraper device is needed to solve this problem. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a printing press scraper device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A printing press scraper device, including side plates. One side inside the side plates is movably provided with a first connecting shaft through a bearing. A printing roller is fixedly arranged on the outer surface of the first connecting shaft. A scraper mechanism is arranged on one side of the printing roller between the side plates. The scraper mechanism includes a second connecting shaft, a spline, a connecting sleeve, and a scraper assembly. A second connecting shaft is movably arranged through a bearing on one side of the printing roller between the side plates. A spline is fixedly arranged on the outer surface of the second connecting shaft. A connecting sleeve is movably sleeved on the outer surfaces of the second connecting shaft and the spline, so that the connecting sleeve can move left and right on the outer surface of the second connecting shaft but cannot rotate relatively. One side of the surface of the connecting sleeve is fixedly provided with a scraper assembly.

[0006] Preferably, a transmission mechanism for driving the squeegee assembly to move horizontally left and right is provided between the first connecting shaft and the second connecting shaft. The transmission mechanism includes a first pulley, a second pulley, a transmission belt, a pressing rod, and a pressing ring. The first pulley is fixedly arranged on the outer surface of the first connecting shaft, and the second pulley is movably arranged on the outer surface of the second connecting shaft through a bearing, so that the second pulley can rotate freely around the second connecting shaft without driving the second connecting shaft to rotate. A transmission belt is sleeved between the first pulley and the second pulley. The pressing rod is fixedly arranged on the outer surface of the second pulley, and the pressing ring is fixedly arranged on the outer surface of the connecting sleeve. The cross-section of the pressing ring is trapezoidal. When the first connecting shaft and the printing roller rotate and work, the transmission mechanism can drive the pressing rod and the second pulley to rotate continuously. Then, by using the pressing rod to press the pressing ring, the connection can be conducted, and the squeegee assembly can move left and right reciprocally under the action of the spring.

[0007] Preferably, a spring is sleeved on the second connecting shaft on the side of the connecting sleeve away from the second pulley. The spring of this device is in a compressed state for a long time and can push the connecting sleeve and the pressing ring to move towards the pressing rod direction under the action of its own elasticity, so as to ensure that the ball on the surface of the pressing rod is in close contact with the outer surface of the pressing ring.

[0008] Preferably, a ball is movably clamped at one end of the pressing rod close to the pressing ring through a card slot. The pressing rod is in mutual contact with the outer surface of the pressing ring through the ball. By using the ball to replace the contact between the pressing rod and the pressing ring, unnecessary frictional losses can be avoided.

[0009] Preferably, a third pulley is fixedly arranged at one end of the first connecting shaft. Through the third pulley, a power source can be externally connected, so as to drive the printing roller and the first pulley to rotate.

[0010] Preferably, an ink cartridge is fixedly arranged between the side plates at the lower end of the printing roller. When the printing roller rotates continuously, it can dip ink from the ink cartridge. At this time, the excess ink on the printing roller except for the concave parts can be scraped off by the squeegee on the surface of the squeegee assembly to ensure the printing quality.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. The device of the present utility model can make the squeegee assembly move reciprocally, thus preventing the squeegee of the squeegee from having fixed-point friction with the concave part of the printing roller, solving the wear of the fixed stay point, and thus preventing the squeegee from being damaged too quickly, so as to improve the service life of the squeegee.

[0013] 2. When the utility model is in use, the scraper assembly is linked with the printing roller. As long as the printing roller rotates, it can drive the scraper assembly to swing left and right. At the same time, when the device is in use, the ball is used to replace the extrusion rod to contact the extrusion ring, which can avoid unnecessary frictional losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the overall structure of a printing machine scraper device of the present utility model Figure 1 ;

[0015] Figure 2 Schematic diagram of the overall structure of a printing machine scraper device of the present utility model Figure 2 ;

[0016] Figure 3 Installation view of the first connecting shaft in a printing machine scraper device of the present utility model;

[0017] Figure 4 In a printing machine scraper device of the present utility model Figure 3 Top view;

[0018] Figure 5 In a printing machine scraper device of the present utility model Figure 4 Rear view.

[0019] In the figure: 1, side plate; 2, first connecting shaft; 3, printing roller; 4, second connecting shaft; 5, spline; 6, connecting sleeve; 7, scraper assembly; 8, first pulley; 9, second pulley; 10, transmission belt; 11, extrusion rod; 12, extrusion ring; 13, spring; 14, ball; 15, third pulley; 16, ink cartridge. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-5, the present utility model provides a technical solution: a printing press blade device, including a side plate 1. Inside one side of the side plate 1, a first connecting shaft 2 is movably arranged through a bearing. On the outer surface of the first connecting shaft 2, a printing roller 3 is fixedly arranged. Between the side plates 1, a blade mechanism is arranged on one side of the printing roller 3. The blade mechanism includes a second connecting shaft 4, a spline 5, a connecting sleeve 6, and a blade assembly 7. Between the side plates 1, a second connecting shaft 4 is movably arranged through a bearing on one side of the printing roller 3. On the outer surface of the second connecting shaft 4, a spline 5 is fixedly arranged. A connecting sleeve 6 is movably sleeved on the outer surfaces of the second connecting shaft 4 and the spline 5, so that the connecting sleeve 6 can move left and right on the outer surface of the second connecting shaft 4 but cannot rotate relatively. On one side of the surface of the connecting sleeve 6, a blade assembly 7 is fixedly arranged.

[0022] A transmission mechanism for driving the blade assembly 7 to move horizontally left and right is arranged between the first connecting shaft 2 and the second connecting shaft 4. The transmission mechanism includes a first pulley 8, a second pulley 9, a transmission belt 10, a pressing rod 11, and a pressing ring 12. On the outer surface of the first connecting shaft 2, a first pulley 8 is fixedly arranged. On the outer surface of the second connecting shaft 4, a second pulley 9 is movably arranged through a bearing, so that the second pulley 9 can rotate idly around the second connecting shaft 4 and will not drive the second connecting shaft 4 to rotate. A transmission belt 10 is sleeved between the first pulley 8 and the second pulley 9. On the outer surface of the second pulley 9, a pressing rod 11 is fixedly arranged. On the outer surface of the connecting sleeve 6, a pressing ring 12 is fixedly arranged. The cross-section of the pressing ring 12 is trapezoidal; through the transmission mechanism, when the first connecting shaft 2 and the printing roller 3 are rotating and working, the pressing rod 11 and the second pulley 9 can be driven to rotate continuously, and then by using the pressing rod 11 to press the pressing ring 12, the connection can be conducted and the blade assembly 7 can move left and right reciprocally continuously under the action of a spring 13;

[0023] On the side of the second connecting shaft 4 away from the second pulley 9, a spring 13 is sleeved on the connecting sleeve 6. The spring 13 of this device is in a compressed state for a long time, and under the action of its own elasticity, it can push the connecting sleeve 6 and the pressing ring 12 to always move towards the pressing rod 11; to ensure that the ball 14 on the surface of the pressing rod 11 is in close contact with the outer surface of the pressing ring 12;

[0024] One end of the pressing rod 11 close to the pressing ring 12 is movably clamped with a ball 14 through a card slot. The pressing rod 11 is in mutual contact with the outer surface of the pressing ring 12 through the ball 14; by using the ball 14 instead of the contact between the pressing rod 11 and the pressing ring 12, unnecessary frictional losses can be avoided;

[0025] One end of the first connecting shaft 2 is fixedly provided with a third pulley 15. Through the third pulley 15, a power source can be externally connected, so as to drive the printing roller 3 and the first pulley 8 to rotate;

[0026] A cartridge 16 is fixedly arranged between the side plates 1 at the lower end of the printing roller 3. As the printing roller 3 rotates continuously, ink can be dipped from the cartridge 16. At this time, the excess ink on the printing roller 3 except for the concave parts can be scraped off by the squeegee on the surface of the squeegee assembly 7 to ensure the printing quality.

[0027] Working principle: When using this device, a power source can be externally connected through the third pulley 15, so as to drive the printing roller 3 and the first pulley 8 to rotate. As the printing roller 3 rotates continuously, ink can be dipped from the cartridge 16. At this time, the excess ink on the printing roller 3 except for the concave parts can be scraped off by the squeegee on the surface of the squeegee assembly 7 to ensure the printing quality;

[0028] The squeegee assembly 7 of this device can swing reciprocally left and right. When the first pulley 8 rotates, the second pulley 9 can be continuously idled by using the transmission belt 10. At this time, as Figure 5 shown, since the cross-section of the outer surface of the extrusion ring 12 is trapezoidal, when the extrusion rod 11 rotates from the lower end of the extrusion ring 12 to the upper end of the extrusion ring 12, this can squeeze the extrusion ring 12 and the connecting sleeve 6 and the squeegee assembly 7 to move towards the direction close to the spring 13, so that the spring 13 is continuously compressed. As the extrusion rod 11 rotates, the extrusion rod 11 will rotate from the upper end of the extrusion ring 12 to the lower end of the extrusion ring 12. At this time, under the elastic force of the spring 13, the connecting sleeve 6 and the squeegee assembly 7 can be pushed to move towards the direction close to the second pulley 9; in this way, the squeegee assembly 7 can move reciprocally, so as to prevent the squeegee of the squeegee from having fixed-point friction with the concave parts of the printing roller 3, solve the wear of the fixed stay points, and thus prevent the squeegee from being damaged too quickly, so as to improve the service life of the squeegee;

[0029] And when this device is used, the squeegee assembly 7 is linked with the printing roller 3. As long as the printing roller rotates, the squeegee assembly 7 can be driven to swing left and right. At the same time, when this device is used, the contact between the ball 14 and the extrusion ring 12 is used instead of the extrusion rod 11, which can avoid unnecessary frictional losses.

[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A scraper device for a printing press, comprising a side plate (1), characterized in that: A first connecting shaft (2) is movably provided on one side of the inner part of the side plate (1) via a bearing, a printing roller (3) is fixedly provided on the outer surface of the first connecting shaft (2), a scraper mechanism is provided between the side plates (1) on one side of the printing roller (3), the scraper mechanism comprises a second connecting shaft (4), a spline (5), a connecting sleeve (6), and a scraper assembly (7), a second connecting shaft (4) is movably provided on one side of the printing roller (3) between the side plates (1) via a bearing, a spline (5) is fixedly provided on the outer surface of the second connecting shaft (4), a connecting sleeve (6) is movably sleeved on the outer surfaces of the second connecting shaft (4) and the spline (5), so that the connecting sleeve (6) can move left and right on the outer surface of the second connecting shaft (4) but cannot rotate relative to each other, and a scraper assembly (7) is fixedly provided on one side of the surface of the connecting sleeve (6).

2. A printing machine scraper device according to claim 1, characterized in that: A transmission mechanism for driving the scraper assembly (7) to move horizontally to the left and right is arranged between the first connecting shaft (2) and the second connecting shaft (4), and the transmission mechanism comprises a first pulley (8), a second pulley (9), a transmission belt (10), an extrusion rod (11), and an extrusion ring (12). The first connecting shaft (2) is fixedly provided with the first pulley (8), and the second connecting shaft (4) is movably provided with the second pulley (9) through a bearing, so that the second pulley (9) can rotate around the second connecting shaft (4) without driving the second connecting shaft (4) to rotate. A transmission belt (10) is sleeved between the first pulley (8) and the second pulley (9), and the extrusion rod (11) is fixedly provided on the outer surface of the second pulley (9). The outer surface of the connecting sleeve (6) is fixedly provided with an extrusion ring (12), and the cross section of the extrusion ring (12) is a trapezoid.

3. A printing machine scraper device according to claim 2, characterized in that: The second connecting shaft (4) is sleeved with a spring (13) on the side of the connecting sleeve (6) away from the second pulley (9).

4. A printing machine scraper device according to claim 2, characterized in that: One end of the extrusion rod (11) close to the extrusion ring (12) is provided with a ball (14) movably engaged through a slot, and the extrusion rod (11) is fitted to the outer surface of the extrusion ring (12) via the ball (14).

5. A printing machine scraper device according to claim 1, characterized in that: A third pulley (15) is fixedly arranged at one end of the first connecting shaft (2).

6. A printing machine scraper device according to claim 1, characterized in that: An ink cartridge (16) is fixedly arranged at the lower end of the printing roller (3) between the side plates (1).

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