Printing ink cylinder

Abstract

The utility model discloses a printing ink cylinder which comprises a cylinder body and a cover plate arranged at the top of the cylinder body, and a cooling device used for cooling printing ink in the cylinder body is arranged on one side of the cylinder body. A lifting plate parallel to the bottom face of the cylinder body and a driving assembly used for driving the lifting plate to move up and down in the height direction of the cylinder body are arranged in the cylinder body, and a plurality of through holes allowing ink to pass through are formed in the lifting plate. Ink in the ink cylinder can be cooled through the cooling device arranged outside the ink cylinder, the lifting plate arranged in the cylinder body can promote the ink to flow in the lifting process, cold and heat exchange of the ink is further accelerated, and cooling of the ink is accelerated.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing equipment, and in particular relates to an ink cylinder. Background Art

[0002] At present, there are more and more types of inks used in the market. Different inks have different viscosities and different printing environments. In the past, screen printing was mostly used. As the application of inks increases, the traditional inefficient screen printing method can no longer meet market demand, and high-speed and efficient gravure printing is the general trend. When in use, the ink in the ink cylinder is pumped into the printing plate slot through the ink pump for circulating inking. Since the amount of ink extracted by the ink pump is more than the amount of inking, the excess ink will flow back into the ink cylinder. Since the speed of the printing plate is relatively high, a certain temperature will be generated. Therefore, the temperature of the ink flowing back to the ink cylinder after passing through the printing plate will gradually increase. When the ink accumulates more, the temperature of the ink in the entire ink cylinder will increase. In the printing process, the color and effect of the printed product will not meet the design requirements, and the product quality will decrease. Therefore, in the prior art, a cooling device will be set in the ink cylinder to cool the ink in the ink cylinder. However, since the ink is relatively static in the ink cylinder, the heat exchange speed is slow, resulting in a poor cooling effect. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide an ink cylinder which can accelerate the cooling of ink and clean the inner wall of the ink cylinder at the same time.

[0004] In order to solve the above technical problems, the utility model provides an ink cylinder, comprising a cylinder body and a cover plate arranged on the top of the cylinder body, a cooling device for cooling the ink in the cylinder body is arranged on one side of the cylinder body, a lifting plate parallel to the bottom surface of the cylinder body and a driving component for driving the lifting plate to move up and down along the height direction of the cylinder body are arranged in the cylinder body, and a plurality of through holes for ink to pass through are arranged in the lifting plate; the driving component comprises a driving device and a threaded rod, the driving device is arranged on the cover plate, the threaded rod is longitudinally rotatably connected between the cover plate and the bottom of the cylinder body, the output end of the driving device is drivingly connected to the threaded rod, a threaded hole is arranged on the lifting plate, and the lifting plate is threadedly connected to the outside of the threaded rod through the threaded hole.

[0005] Furthermore, it also includes a guide rod arranged on one side of the threaded rod, the two ends of the guide rod are respectively abutted against the cover plate and the bottom surface of the cylinder body, the lifting plate is provided with a connecting hole adapted to the guide rod, and the lifting plate is slidably connected to the outer side of the guide rod.

[0006] Furthermore, the cooling device includes a compressor, a condenser, a refrigerant, an evaporator and an expansion valve, the compressor, the condenser, the refrigerant, the evaporator and the expansion valve are connected end to end, the compressor, the condenser, the refrigerant and the expansion valve are all arranged outside the cylinder body, the evaporator is arranged on the inner wall of the cylinder body along the height direction wheel of the cylinder body and the outer periphery of the lifting plate is located on the inner periphery of the evaporator.

[0007] Furthermore, a scraper bar that fits the inner wall of the cylinder body is provided on the outer periphery of the lifting plate, and the scraper bar is detachably connected to the outer periphery of the lifting plate.

[0008] Furthermore, a slide groove recessed toward the middle of the lift plate is provided on the outer periphery of the lift plate, a connecting portion slidably connected to the slide groove is provided on the scraper strip, the connecting portion is in a "T"-shaped structure, the bottom surface of the connecting portion abuts against the bottom surface of the slide groove, and limiting portions extending toward the middle of the slide groove are provided on both sides of the top of the slide groove, and the connecting portion is clamped in the slide groove through the limiting portion.

[0009] Furthermore, the outer sides of both ends of the lifting plate have installation openings that penetrate the lifting plate along the thickness direction of the lifting plate, and the connecting portion is embedded in the sliding groove through the installation openings.

[0010] Furthermore, the connecting portion and the scraper strip are an integrally formed structure.

[0011] Furthermore, the scraper strip is made of flexible rubber material.

[0012] Furthermore, the upper surface and the lower surface of the scraper strip are both inclined surfaces adapted to the outer surface of the evaporator.

[0013] The utility model discloses an ink cylinder, which can cool the ink in the ink cylinder by means of a cooling device arranged outside the ink cylinder, and the contact surface of the ink can be increased by arranging an evaporator in the ink cylinder along the height direction wheel of the ink cylinder, thereby enhancing the cooling effect; a lifting plate is arranged in the ink cylinder, which can promote the flow of ink during the lifting process, and further accelerate the cold and heat exchange of the ink; a scraper arranged on the outer periphery of the lifting plate can clean the inner wall of the ink cylinder during the lifting process of the lifting plate, thereby preventing the ink from being attached to the inner wall of the ink cylinder for a long time and being difficult to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The figure is a schematic diagram of the overall structure of an embodiment of the utility model.

[0015] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the utility model.

[0016] Figure 3It is a schematic diagram of the internal structure of an embodiment of the utility model.

[0017] Figure 4 It is a schematic diagram of the planar structure of the lifting plate in one embodiment of the utility model.

[0018] Figure 5 It is a cross-sectional view of a lifting plate located in a cylinder body in one embodiment of the utility model.

[0019] The meanings of the numbers in the accompanying drawings are: cylinder body 1; opening 11; cover plate 2; cooling device 3; compressor 31; condenser 32; evaporator 33; cover 34; control panel 341; lifting plate 4; through hole 41; threaded hole 42; connecting hole 43; through hole 42; slide groove 44; limiting portion 441; installation opening 45; driving assembly 5; driving device 51; threaded rod 52; scraper strip 6; connecting portion 61; guide rod 7. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings:

[0021] See also Figure 1 , Figure 2 as well as Figure 3 The utility model is an ink cylinder comprising a cylinder body 1 and a cover plate 2 arranged on the top of the cylinder body 1, a cooling device 3 for cooling the ink in the cylinder body 1 is arranged on one side of the cylinder body 1, a lifting plate 4 parallel to the bottom surface of the cylinder body 1 and a driving component 5 for driving the lifting plate 4 to move up and down along the height direction of the cylinder body 1 are arranged in the cylinder body 1, and a plurality of through holes 41 for ink to pass through are arranged on the periphery of the lifting plate 4. During the printing process, the ink in the cylinder body 1 is pumped into the printing plate groove by the ink pump arranged at the bottom of the cylinder body 1 for circulating ink, and the excess ink flows back into the cylinder body 1 through the opening 11 at the top of the cylinder body 1. At this time, the ink in the cylinder body 1 can be cooled by the cooling device 3, and the lifting plate 4 can be driven to rise and fall by the driving component, thereby promoting the ink in the cylinder body 1 to flow, which can accelerate the cold and heat exchange of the ink, thereby making the ink cool faster.

[0022] In this embodiment, the cooling device 3 includes a compressor 31, a condenser 32, a refrigerant (not shown), an evaporator 33 and an expansion valve (not shown). The compressor 31, the condenser 32, the refrigerant, the evaporator 33 and the expansion valve are connected end to end. The compressor 31, the condenser 32, the refrigerant and the expansion valve are all arranged outside the cylinder body 1, and the evaporator 33 is arranged on the inner wall of the cylinder body 1 along the height direction of the cylinder body 1. Specifically, the compressor 31 inhales low-temperature and low-pressure refrigerant vapor from the evaporator 33, which is adiabatically compressed by the compressor 31 to become high-temperature and high-pressure superheated vapor, and then is pressed into the condenser 32 for constant pressure cooling, and releases heat to the cooling medium, and then is cooled to a supercooled liquid refrigerant. The liquid refrigerant is adiabatically throttled by the expansion valve to become a low-pressure liquid refrigerant, which evaporates in the evaporator 33 to absorb the heat outside the evaporator, that is, the heat of the ink in the cylinder body 1, so that the ink is cooled, and the low-pressure refrigerant flowing out is re-inhaled into the compressor 31, and the cycle works like this. Since the entire cooling device 3 is a commonly used technology, no further details are given here. In this embodiment, a cover 34 is further provided outside the compressor 31 and the condenser 32, and the compressor 31 and the condenser 32 are covered in the cover 34, so as to protect the compressor 31 and the condenser 32. A control panel 341 is also provided on the cover 34, and the cooling device 3 and the driving assembly 5 are both electrically connected to the control panel 341.

[0023] In order to drive the lifting plate 4 to move up and down, in this embodiment, the driving assembly 5 includes a driving device 51, a threaded rod 52 and a guide rod 7 for axially limiting the lifting plate 4. The driving device 51 is arranged on the cover plate 2, and the threaded rod 52 is longitudinally connected between the cover plate 2 and the bottom of the cylinder body 1. The output end of the driving device 51 is transmission-connected with the threaded rod 52, and the lifting plate 4 is threadedly connected to the outside of the threaded rod 52. In this embodiment, the driving device 51 is a servo motor. When the driving device 51 rotates, the threaded rod 52 is driven to rotate. At the same time, since the lifting plate 4 is threadedly connected to the threaded rod 52, when the threaded rod 52 rotates, the lifting plate will move along the axial direction of the threaded rod 52. In this embodiment, the driving device 51 is a driving motor. The guide rod 7 is arranged on one side of the threaded rod 52, and the two ends of the guide rod 7 are respectively in contact with the bottom surface of the cover plate 2 and the cylinder body 1. The lifting plate 4 is provided with a connecting hole 41 adapted to the guide rod 7, and the lifting plate 41 is slidably connected to the outside of the guide rod 7. The guide rod 7 can be provided to limit the lifting plate 4 longitudinally, so as to prevent the lifting plate 4 from rotating when the threaded rod 52 rotates. When the driving device 51 drives the threaded rod 52 to rotate, the lifting plate 4 can only move along the height direction of the threaded rod 52 due to the limiting effect of the guide rod 7.

[0024] Please continue to see Figure 4 as well as Figure 5, a scraper 6 is provided on the outer periphery of the lifting plate 4 to fit the inner wall of the cylinder 1. When the lifting plate 4 is in the lifting process, the scraper 6 can scrape the inner wall of the cylinder 1 to prevent the inner wall of the cylinder 1 from being attached with too much ink. Since the evaporator 33 protrudes from the inner wall of the cylinder 1, in this embodiment, the outer surface of the evaporator 33 is a hemispherical surface. In order to reduce the resistance of the evaporator 33 to the scraper 6, the upper surface and the lower surface of the scraper 6 are both set as inclined surfaces. Through this design, the scraper 6 can slide along the outer surface of the evaporator 33, reducing the resistance of the evaporator 33 to the scraper 6. In order to prevent the scraper 6 from getting stuck when passing through the evaporator 33, the scraper 6 is made of flexible rubber material. When not in use, the outer edge of the scraper 6 is against the inner wall of the cylinder 1. When the lifting plate 4 moves up and down, when the scraper 6 passes through the evaporator 33, the scraper 6 is bent upward or downward by its own flexibility so that it can smoothly pass through the position of the evaporator 33. In order to facilitate the replacement of the scraper strip 6 when the scraper strip is damaged, the scraper strip 6 is connected to the outer periphery of the lifting plate 4 in a detachable manner. Specifically, a slide groove 44 recessed toward the middle of the lifting plate 4 is provided on the outer periphery of the lifting plate 4, and a connecting portion 61 slidably connected to the slide groove 44 is provided on the scraper strip 6. The connecting portion is in a "T"-shaped structure, and the bottom surface of the connecting portion 61 abuts against the bottom surface of the slide groove 44. Both sides of the top of the slide groove 44 are provided with a limiting portion 441 extending toward the middle of the slide groove 44, and the connecting portion 61 is clamped in the slide groove 44 through the limiting portion 441. In this embodiment, since the connecting portion 61 is in a "T" shape, this structure matches the slide groove 44, so that the limiting portion 441 of the slide groove 44 can clamp the connecting portion 61 to prevent the scraper strip 6 from falling off. For the convenience of installation, the outer sides of both ends of the lifting plate 4 are provided with mounting openings 45 that penetrate the lifting plate 4 along the thickness direction of the lifting plate 4, and the connecting portion 61 is inserted into the slide groove 44 through the mounting openings 45. During installation, the connecting portion 61 is inserted into the slide groove 44 from one end of one of the mounting openings 45, and then the scraper strip 6 is pulled around the periphery of the lifting plate 4 and inserted into the slide groove through another mounting opening 45. Of course, in other embodiments, multiple mounting openings 45 can also be provided, and the installation method remains unchanged. In order to make the connection between the connecting portion 61 and the scraper strip 6 higher, the connecting portion 61 and the scraper strip 6 are formed into an integral structure.

[0025] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the utility model.

Claims

1. An ink cylinder, comprising a cylinder body and a cover plate arranged on the top of the cylinder body, wherein a cooling device for cooling the ink in the cylinder body is arranged on one side of the cylinder body, characterized in that: The cylinder body is provided with a lifting plate parallel to the bottom surface of the cylinder body and a driving component for driving the lifting plate to move up and down along the height direction of the cylinder body, and a plurality of through holes for ink to pass through are provided in the lifting plate; the driving component comprises a driving device, a threaded rod and a guide rod provided on one side of the threaded rod, the driving device is provided on the cover plate, the threaded rod is longitudinally rotatably connected between the cover plate and the bottom of the cylinder body, the output end of the driving device is transmission-connected with the threaded rod, a threaded hole is provided on the lifting plate, the lifting plate is threadedly connected to the outside of the threaded rod through the threaded hole, the two ends of the guide rod are respectively abutted against the cover plate and the bottom surface of the cylinder body, the lifting plate is provided with a connecting hole adapted to the guide rod, and the lifting plate is slidably connected to the outside of the guide rod.

2. The ink container according to claim 1, characterized in that: The cooling device includes a compressor, a condenser, a refrigerant, an evaporator and an expansion valve, wherein the compressor, the condenser, the refrigerant, the evaporator and the expansion valve are connected end to end, and the compressor, the condenser, the refrigerant and the expansion valve are all arranged outside the cylinder body. The evaporator is arranged on the inner wall of the cylinder body along the height direction wheel of the cylinder body, and the outer periphery of the lifting plate is located on the inner periphery of the evaporator.

3. An ink tank according to claim 2, characterized in that The outer periphery of the lifting plate is provided with a scraper bar which fits the inner wall of the cylinder body, and the scraper bar is detachably connected to the outer periphery of the lifting plate.

4. An ink tank according to claim 3, characterized in that The outer periphery of the lifting plate is provided with a slide groove recessed toward the middle of the lifting plate, the scraper strip is provided with a connecting portion slidably connected to the slide groove, the connecting portion is in a "T"-shaped structure, the bottom surface of the connecting portion abuts against the bottom surface of the slide groove, and both sides of the top of the slide groove are provided with limiting portions extending toward the middle of the slide groove, and the connecting portion is clamped in the slide groove through the limiting portions.

5. An ink container according to claim 4, characterized in that The outer sides of both ends of the lifting plate have mounting openings penetrating the lifting plate along the thickness direction of the lifting plate, and the connecting portion is embedded in the sliding groove through the mounting openings.

6. The ink container according to claim 4, characterized in that: The connecting portion and the scraper strip are an integrally formed structure.

7. The ink container according to claim 6, characterized in that: The scraper strip is made of flexible rubber material.

8. The ink container according to claim 3, characterized in that: The upper surface and the lower surface of the scraper strip are both inclined surfaces matched with the outer surface of the evaporator.

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