An assembled cooling roller for a printing press cooling system

Abstract

The present invention relates to the field of printing press cooling technology, and in particular to an assembled cooling roller for a printing press cooling system, comprising a frame having a plurality of threaded mounting holes, two spaced-apart collars fixedly mounted on the lower end of the frame, a heat-conducting roller disposed between the two collars, the heat-conducting roller being hollow, the end of the heat-conducting roller extending into the collars, and the end of the heat-conducting roller being rotatably mounted within the collars. Two spaced-apart cavities are fixedly mounted within the heat-conducting roller, the frame being provided with a drive mechanism, and also comprising two sets of diversion mechanisms. By installing the frame in a printing state, the heat-conducting roller contacts a film, the heat-conducting roller can absorb heat from the film, low-temperature cooling water enters the cavity, and then enters a plurality of spiral pipes. The heat-conducting roller is driven by the drive mechanism to rotate intermittently, so that different areas of the heat-conducting roller contact the film, effectively improving the cooling effect of the heat-conducting roller.

Description

Technical Field

[0001] The present invention relates to the technical field of printing press cooling, and in particular to an assembled cooling roller used in a printing press cooling system. Background Art

[0002] Chilling rollers are widely used in gravure printing, coating, papermaking, textile and other production lines. Their main function is to cool down materials with high temperatures to the appropriate temperature. The main function of the cooling roller in the printing process is to cool and flatten the film. The speed of today's high-speed gravure printing presses has reached 300m / min. At such a high printing speed, a drying device must be used to quickly dry the ink and achieve reasonable printability. The dried film has a high temperature. Since the film has significant thermal expansion and contraction after high temperature, if the film does not return to its normal state before entering the next printing, it is easy to cause problems such as misregistration and surface wrinkling, which seriously affect the quality of the printed product. Therefore, a cooling roller device is needed to cool the film.

[0003] The existing cooling roller device mainly includes a cooling roller, a water inlet pipe, a water chamber and a return water tank. It mainly cools down by the flow and renewal of water, which is also called water-cooled cooling. However, since the cooling roller is in a fixed state and the contact surface between the cooling roller and the material film is in a fixed state, the remaining positions on the cooling roller cannot be effectively utilized, resulting in different temperatures in different areas on the cooling roller. At the same time, the heat exchange area between the cooling water and the cooling roller is limited, which limits the cooling effect. For this reason, we propose an assembled cooling roller for a printing press cooling system. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the cooling roller is in a fixed state and the contact surface between the cooling roller and the material film is in a fixed state, so the remaining positions on the cooling roller cannot be effectively utilized, resulting in different temperatures in different areas on the cooling roller. At the same time, the heat exchange area between the cooling water and the cooling roller is limited, which limits the cooling effect. An assembled cooling roller for a printing press cooling system is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An assembled cooling roller for a printing press cooling system is designed, comprising a frame with a plurality of threaded mounting holes formed on the frame, two spaced-apart rings fixedly mounted on the lower end of the frame, a heat-conducting roller disposed between the two rings, the heat-conducting roller being hollow inside, the end of the heat-conducting roller extending into the ring, and the end of the heat-conducting roller being rotatably mounted in the ring.

[0007] Two spaced-apart cavities are fixedly installed inside the heat-conducting roller, and a plurality of spiral pipes distributed in a circular array are arranged between the two cavities. Both ends of the spiral pipes are fixedly connected to the cavities, and the spiral pipes are communicated with the cavities. A driving mechanism is provided on the frame, and the driving mechanism is connected to the heat-conducting roller. It also includes two groups of diversion mechanisms, and the two groups of diversion mechanisms are respectively communicated with the cavities on both sides, and the diversion mechanisms are both communicated with the external waterway.

[0008] Preferably, the flow guide mechanism includes a connecting pipe, a sleeve and a support plate, one end of the connecting pipe is connected to the cavity and fixedly connected to the cavity, the other end of the connecting pipe is inserted into the sleeve and is connected to each other, the connecting pipe and the sleeve are connected, the upper end of the support plate is fixedly connected to the frame, and one end of the sleeve is fixedly connected to the support plate and passes through the support plate.

[0009] Preferably, the driving mechanism includes a first rotating shaft, which is rotatably mounted in the frame, a friction wheel is fixedly mounted on the first rotating shaft, an anti-slip ring is provided on the surface of the heat-conducting roller, the friction wheel and the anti-slip ring are interference fit, and the friction wheel can drive the heat-conducting roller to rotate, one end of the first rotating shaft passes through the frame and the support plate, and also includes a first motor and a first belt mechanism, the first motor is fixedly mounted on the frame, and the first belt mechanism is mounted on the end of the first rotating shaft and the output shaft end of the first motor.

[0010] Preferably, an adjustment mechanism is provided at the upper end of the frame, and the adjustment mechanism is connected to the frame.

[0011] Preferably, the adjustment mechanism includes two spaced-apart mounting plates, a plurality of mounting holes are provided on the mounting plates, two spaced-apart oil cylinders are fixedly mounted on the mounting plates, and output ends of the oil cylinders are both fixedly connected to the frame.

[0012] Preferably, one end of the sleeve is connected to an acceleration mechanism, and the acceleration mechanism is connected to the output shaft of the first motor.

[0013] Preferably, the acceleration mechanism includes a box body, which is communicated with one end of the sleeve and is fixedly connected to the sleeve. A second rotating shaft is rotatably installed in the box body, and one end of the second rotating shaft passes through the box body. A plurality of blades distributed in a circular array are provided in the box body, and the blades are all fixedly connected to the end of the second rotating shaft. A connecting pipe is connected and fixedly installed on the box body, and the connecting pipe is connected to an external water supply device. A first gear is fixedly installed on the output shaft end of the first motor, and a horizontal shaft is rotatably installed on the support plate, and a second gear is fixedly installed on the end of the horizontal shaft, and the second gear is meshed with the first gear. A second belt mechanism is installed on the end of the horizontal shaft and the second rotating shaft, and the number of teeth of the first gear is greater than the number of teeth of the second gear.

[0014] The present invention proposes an assembled cooling roller for a printing machine cooling system, which has the following beneficial effects: by installing the frame in a printing state, the heat-conducting roller contacts the material film, and the heat-conducting roller can absorb the heat from the material film. At the same time, it is connected to the external water channel through the diversion mechanism, and the external low-temperature water is continuously injected by the diversion mechanism on one side and then discharged by the diversion mechanism on the other side. The low-temperature cooling water enters the cavity and then enters multiple spiral pipes. Compared with straight pipes, the spiral pipes effectively increase the contact area with the air. After that, it is discharged from the cavity on the other side, so that the heat on the heat-conducting roller can be taken away by the low-temperature cooling water to achieve the cooling effect. The heat-conducting roller is driven to rotate intermittently by the driving mechanism, so that different areas of the heat-conducting roller contact the material film, effectively improving the cooling effect of the heat-conducting roller. By increasing the heat exchange area between the cooling water and the cooling roller, the cooling effect is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an assembled cooling roller for a printing press cooling system proposed by the present invention.

[0016] Figure 2 This is a side view of an assembled cooling roller for a printing press cooling system proposed by the present invention.

[0017] Figure 3 This is a cross-sectional view of an assembled cooling roller for a printing press cooling system proposed by the present invention.

[0018] Figure 4 This is a partial enlarged schematic diagram of the structure of the box body of an assembled cooling roller for a cooling system of a printing press proposed by the present invention.

[0019] In the figure: frame 1, collar 2, heat-conducting roller 3, cavity 4, spiral pipe 5, connecting pipe 6, sleeve 7, support plate 8, first rotating shaft 9, friction wheel 10, anti-slip ring 11, first motor 12, first belt mechanism 13, mounting plate 14, cylinder 15, box body 16, second rotating shaft 17, blades 18, connecting pipe 19, first gear 20, horizontal shaft 21, second gear 22, second belt mechanism 23. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Example 1:

[0022] Reference Figure 1-4An assembled cooling roller for a printing press cooling system includes a frame 1 having a plurality of threaded mounting holes. Two spaced-apart collars 2 are fixedly mounted on the lower end of the frame 1. A heat-conducting roller 3 is disposed between the two collars 2. The heat-conducting roller 3 is hollow, and the end of the heat-conducting roller 3 extends into the collar 2. The end of the heat-conducting roller 3 is rotatably mounted within the collar 2. Two spaced-apart cavities 4 are fixedly mounted within the heat-conducting roller 3. A plurality of spiral pipes 5 distributed in a circumferential array are disposed between the two cavities 4. Both ends of the spiral pipes 5 are fixedly connected to the cavities 4, and the spiral pipes 5 are in communication with the cavities 4. A drive mechanism is provided on the frame 1, which is connected to the heat-conducting roller 3. The drive mechanism also includes two sets of diversion mechanisms, which are in communication with the cavities 4 on both sides, respectively, and both diversion mechanisms are in communication with an external waterway.

[0023] Working principle: By installing the frame 1 in a printing state, the heat-conducting roller 3 contacts the material film, and the heat-conducting roller 3 can absorb the heat on the material film. At the same time, it is connected to the external water channel through the diversion mechanism. External low-temperature water is continuously injected by the diversion mechanism on one side and then discharged by the diversion mechanism on the other side. The low-temperature cooling water enters the cavity 4 and then enters multiple spiral pipes 5. Compared with straight pipes, the spiral pipes 5 effectively increase the contact area with the air. After that, it is discharged from the cavity 4 on the other side, so that the heat on the heat-conducting roller 3 can be taken away by the low-temperature cooling water to achieve the cooling effect. The heat-conducting roller 3 is driven to rotate intermittently by the driving mechanism, so that different areas of the heat-conducting roller 3 are in contact with the material film, effectively improving the cooling effect of the heat-conducting roller 3. By increasing the heat exchange area between the cooling water and the cooling roller, the cooling effect is further improved.

[0024] Example 2:

[0025] Reference Figure 1-4As another preferred embodiment of the present invention, the difference from Example 1 is that the flow guide mechanism includes a connecting pipe 6, a sleeve 7, and a support plate 8. One end of the connecting pipe 6 is connected to the cavity 4 and fixedly connected to the cavity 4. The other end of the connecting pipe 6 is inserted into the sleeve 7 and connected to each other. The connecting pipe 6 and the sleeve 7 are connected. The upper end of the support plate 8 is fixedly connected to the frame 1. One end of the sleeve 7 is fixedly connected to the support plate 8 and passes through the support plate 8. The driving mechanism includes a first rotating shaft 9, which is rotatably mounted in the frame 1. A friction wheel 10 is fixedly mounted on the first rotating shaft 9. The surface of the heat-conducting roller 3 is provided with an anti-slip ring 11. The friction wheel 10 and the anti-slip ring 11 have an interference fit. The friction wheel 10 can drive the heat-conducting roller 3 to rotate. One end of the first rotating shaft 9 passes through the frame 1 and the support plate 8. The first motor 12 and the first belt mechanism 13 are fixedly mounted on the frame 1. The first belt mechanism 13 is mounted at the end of the first rotating shaft 9 and the output shaft end of the first motor 12. The first belt mechanism 13 is driven by the first motor 12 to operate, the first rotating shaft 9 rotates, and the friction wheel 10 on the first rotating shaft 9 rotates and can drive the heat-conducting roller 3 to rotate, thereby driving the heat-conducting roller 3 to rotate intermittently, so that different areas of the heat-conducting roller 3 are in contact with the material film, effectively improving the cooling effect of the heat-conducting roller 3.

[0026] An adjustment mechanism is installed at the top of the frame 1 and is connected to the frame 1. This mechanism includes two spaced-apart mounting plates 14, each with multiple mounting holes. Two spaced-apart hydraulic cylinders 15 are fixedly mounted on these plates, with their output ends fixedly connected to the frame 1. The hydraulic cylinders 15 drive the frame 1 vertically, adjusting the position of the heat-conducting roller 3 to suit different printing devices.

[0027] One end of the sleeve 7 is connected to an acceleration mechanism, which is connected to the output shaft of the first motor 12. The acceleration mechanism includes a box body 16, which is connected to one end of the sleeve 7 and is fixedly connected to the sleeve 7. A second rotating shaft 17 is rotatably mounted in the box body 16, one end of the second rotating shaft 17 passes through the box body 16, and a plurality of blades 18 distributed in a circumferential array are provided in the box body 16. The blades 18 are all fixedly connected to the end of the second rotating shaft 17. A connecting pipe 19 is connected and fixedly mounted on the box body 16, and the connecting pipe 19 is connected to an external water supply device. A first gear 20 is fixedly mounted on the output shaft end of the first motor 12, a horizontal shaft 21 is rotatably mounted on the support plate 8, a second gear 22 is fixedly mounted on the end of the horizontal shaft 21, and the second gear 22 meshes with the first gear 20. A second belt mechanism 23 is mounted on the end of the horizontal shaft 21 and the second rotating shaft 17, and the number of teeth of the first gear 20 is greater than the number of teeth of the second gear 22. By setting an acceleration mechanism to accelerate the flow rate of cooling water in multiple spiral pipes 5, the heat in the heat-conducting roller 3 can be taken away faster, thereby improving the cooling efficiency. The first motor 12 drives the first gear 20 to rotate, and the first gear 20 drives the second gear 22 to rotate. The second gear 22 rotates synchronously with the horizontal shaft 21. The horizontal shaft 21 drives the second rotating shaft 17 to rotate through the second belt mechanism 23. The multiple blades 18 at the end of the second rotating shaft 17 rotate. The blades 18 can push the cooling water in the box body 16 to move toward the heat-conducting roller 3, thereby accelerating the flow rate of the cooling water.

[0028] Working Principle: The first motor 12 drives the first belt mechanism 13, causing the first rotating shaft 9 to rotate. The friction wheel 10 on the first rotating shaft 9 rotates and drives the heat transfer roller 3 to rotate, thereby driving the heat transfer roller 3 to rotate intermittently, so that different areas of the heat transfer roller 3 come into contact with the material film, effectively improving the cooling effect of the heat transfer roller 3. An acceleration mechanism is provided to accelerate the flow rate of the cooling water in the multiple spiral pipes 5, which can accelerate the removal of heat from the heat transfer roller 3, thereby improving cooling efficiency. The first motor 12 drives the first gear 20 to rotate, which in turn drives the second gear 22 to rotate. The second gear 22 rotates synchronously with the horizontal shaft 21. The horizontal shaft 21 drives the second rotating shaft 17 through the second belt mechanism 23. The multiple blades 18 at the end of the second rotating shaft 17 rotate. The blades 18 push the cooling water in the box body 16 toward the heat transfer roller 3, thereby accelerating the flow rate of the cooling water.

[0029] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An assembled cooling roller for a printing press cooling system, characterized in that: The heat conducting roller (3) comprises a frame (1), wherein the frame (1) is provided with a plurality of threaded mounting holes, and two spaced-apart sleeves (2) are fixedly mounted on the lower end of the frame (1), a heat conducting roller (3) is arranged between the two sleeves (2), the heat conducting roller (3) is hollow inside, the end of the heat conducting roller (3) extends into the sleeve (2), and the end of the heat conducting roller (3) is rotatably mounted in the sleeve (2); Two spaced cavities (4) are fixedly installed inside the heat-conducting roller (3), and a plurality of spiral pipes (5) distributed in a circumferential array are arranged between the two cavities (4). Both ends of the spiral pipes (5) are fixedly connected to the cavities (4), and the spiral pipes (5) are communicated with the cavities (4). A driving mechanism is arranged on the frame (1), and the driving mechanism is connected to the heat-conducting roller (3). The frame (1) also includes two groups of flow-guiding mechanisms, and the two groups of flow-guiding mechanisms are respectively communicated with the cavities (4) on both sides, and the flow-guiding mechanisms are both communicated with an external waterway. The driving mechanism includes a first rotating shaft (9), which is rotatably mounted in the frame (1); a friction wheel (10) is fixedly mounted on the first rotating shaft (9); an anti-slip ring (11) is provided on the surface of the heat-conducting roller (3); the friction wheel (10) and the anti-slip ring (11) are interference-fitted; the friction wheel (10) can drive the heat-conducting roller (3) to rotate; one end of the first rotating shaft (9) passes through the frame (1) and the support plate (8); and the first motor (12) and the first belt mechanism (13) are fixedly mounted on the frame (1); and the first belt mechanism (13) is mounted at the end of the first rotating shaft (9) and the output shaft end of the first motor (12).

2. The assembled cooling roller for a printing press cooling system according to claim 1, characterized in that: The flow guide mechanism comprises a connecting pipe (6), a sleeve (7) and a support plate (8), one end of the connecting pipe (6) is connected to the cavity (4) and fixedly connected to the cavity (4), the other end of the connecting pipe (6) is inserted into the sleeve (7) and is connected to each other, the connecting pipe (6) and the sleeve (7) are connected, the upper end of the support plate (8) is fixedly connected to the frame (1), and one end of the sleeve (7) is fixedly connected to the support plate (8) and passes through the support plate (8).

3. The assembled cooling roller for a printing press cooling system according to claim 1, characterized in that: An adjustment mechanism is provided at the upper end of the frame (1), and the adjustment mechanism is connected to the frame (1).

4. The assembled cooling roller for a printing press cooling system according to claim 3, characterized in that: The regulating mechanism comprises two spaced-apart mounting plates (14), a plurality of mounting holes being provided on the mounting plates (14), two spaced-apart oil cylinders (15) being fixedly mounted on the mounting plates (14), and output ends of the oil cylinders (15) being fixedly connected to the frame (1).

5. The assembled cooling roller for a printing press cooling system according to claim 2, characterized in that: One end of the sleeve (7) is connected to an acceleration mechanism, and the acceleration mechanism is connected to the output shaft of the first motor (12).

6. The assembled cooling roller for a printing press cooling system according to claim 5, characterized in that: The acceleration mechanism includes a box body (16), the box body (16) is connected to one end of the sleeve (7), the box body (16) is fixedly connected to the sleeve (7), a second rotating shaft (17) is rotatably installed in the box body (16), one end of the second rotating shaft (17) passes through the box body (16), a plurality of blades (18) distributed in a circumferential array are provided in the box body (16), the blades (18) are all fixedly connected to the end of the second rotating shaft (17), a connecting pipe (19) is connected to and fixedly installed on the box body (16), the The connecting pipe (19) is connected to an external water supply device. A first gear (20) is fixedly mounted on the output shaft end of the first motor (12). A transverse shaft (21) is rotatably mounted on the support plate (8). A second gear (22) is fixedly mounted on the end of the transverse shaft (21). The second gear (22) is meshed with the first gear (20). A second belt mechanism (23) is mounted on the ends of the transverse shaft (21) and the second rotating shaft (17). The number of teeth of the first gear (20) is greater than the number of teeth of the second gear (22).

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