A scraper system and a paperboard printing machine

Abstract

This utility model discloses a doctor blade system and a cardboard printing machine. The doctor blade system includes: a mounting frame and a doctor blade mounted on the mounting frame; multiple nozzles spaced apart on the side of the mounting frame away from the doctor blade, each nozzle having a fan-shaped outlet and capable of spraying cleaning fluid towards the doctor blade; the mounting frame has a return channel with a bottom wall, including a first end and a second end opposite to each other. The first end extends to the doctor blade, and the bottom wall gradually slopes downwards from the first end to the second end. The nozzles spray cleaning fluid towards the doctor blade, thereby automatically cleaning the doctor blade. The inclined bottom wall of the return channel improves ink return efficiency.

Description

Technical Field

[0001] This utility model relates to the field of paperboard printing equipment technology, and in particular to a doctor blade system and a paperboard printing machine. Background Technology

[0002] In related technologies, printing presses generally include a doctor blade system and an anilox roller that work together. The doctor blade system removes excess ink from the anilox roller, but ink or other impurities may remain on the doctor blade system, thus requiring regular cleaning. However, current doctor blade systems are relatively inconvenient to clean. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a scraper system capable of automatically cleaning scraper blades.

[0004] The scraper system according to a first aspect embodiment of the present invention includes:

[0005] A mounting bracket and a scraper blade, wherein the scraper blade is mounted on the mounting bracket;

[0006] The nozzle has multiple nozzles, which are spaced apart and installed on the side of the mounting bracket away from the scraper blade. The nozzle outlet has a fan-shaped structure and the nozzle can spray cleaning liquid toward the scraper blade.

[0007] The mounting bracket is provided with a return channel, the return channel has a bottom wall, the bottom wall includes a first end and a second end disposed opposite to each other, the first end extends to the scraper blade, and the bottom wall is gradually inclined downward from the first end to the second end.

[0008] The doctor blade system and cardboard printing machine according to the present invention have at least the following beneficial effects: the nozzle can spray cleaning liquid onto the doctor blade, thereby automatically cleaning the doctor blade; the bottom wall of the return tank is inclined, thereby improving the ink return effect.

[0009] According to some embodiments of the present invention, the bottom wall has a third end and a fourth end along its length, and the bottom wall is gradually inclined downward from the third end to the fourth end.

[0010] According to some embodiments of the present invention, the bottom wall has a third end and a fourth end along its length, and the bottom wall gradually slopes downward from the middle of the bottom wall to the third end and the fourth end.

[0011] According to some embodiments of the present invention, the mounting bracket is further provided with a return channel, one end of which is connected to the return groove.

[0012] According to some embodiments of the present invention, the mounting bracket is provided with the return channel at both ends along the length direction.

[0013] According to some embodiments of the present invention, the scraper system further includes an airbag, which can press the scraper blade tightly onto the mounting bracket.

[0014] According to some embodiments of the present invention, multiple airbags are provided, and the multiple airbags are spaced apart along the length direction of the scraper blade.

[0015] According to some embodiments of the present invention, the scraper system further includes a driving component, which is tractively connected to the mounting bracket. The driving component can drive the mounting bracket to move, thereby driving the scraper blade to move.

[0016] According to some embodiments of this utility model, the mounting bracket is a hollow structure.

[0017] A paperboard printing machine according to a second aspect of the present invention includes the doctor blade system described above.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

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

[0020] Figure 1 This is a schematic diagram of the scraper system according to an embodiment of the present invention.

[0021] Figure 2 for Figure 1 The enlarged view of point A is shown.

[0022] Figure 3 This is a front view of a partial structure of a scraper system according to an embodiment of the present invention.

[0023] Figure 4 This is a side view of a portion of the scraper system according to an embodiment of the present invention.

[0024] Figure label:

[0025] 1. Mounting bracket; 11. Return channel; 111. Bottom wall; 112. First end; 113. Second end; 2. Scraper blade; 3. Nozzle; 6. Return channel; 7. Airbag; 8. Anilox roller. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] According to one embodiment of the present invention, a scraper system is provided. For example... Figures 1 to 4 As shown, the scraper system includes a mounting frame 1, scraper blades 2, and nozzles 3. The scraper blades 2 are mounted on the mounting frame 1. Multiple nozzles 3 are provided, spaced apart on the side of the mounting frame 1 away from the scraper blades 2. The nozzles 3 have fan-shaped outlets and can spray cleaning fluid towards the scraper blades 2. The mounting frame 1 has a return channel 11 with a bottom wall 111. The bottom wall 111 includes a first end 112 and a second end 113 disposed opposite each other. The first end 112 extends to the scraper blades 2, and the bottom wall 111 gradually slopes downwards from the first end 112 to the second end 113.

[0031] In this example, the mounting bracket 1 is equipped with nozzles 3, which spray cleaning fluid onto the doctor blade 2, thereby automatically cleaning the doctor blade 2. The nozzles 3 have a fan-shaped structure, providing a pressurizing effect and a large rinsing area, thus better rinsing the bottom of the mounting bracket 1 and the doctor blade 2. The bottom wall 111 of the return trough 11 is inclined, thereby improving the ink return effect.

[0032] It should be noted that multiple nozzles 3 can be installed at intervals along the length of the scraper on the mounting bracket 1. For example, four, five, or six nozzles 3 can be provided, and those skilled in the art can determine this according to the actual situation, without making specific limitations here.

[0033] In this example, the mounting bracket 1 has a protruding section, the sidewall of which can be used to mount the doctor blade 2. The top wall of the protruding section and the sidewall of the mounting bracket 1 can form a return channel 11. The return channel 11 has a bottom wall 111, which is the top wall of the protruding section. The bottom wall 111 of the return channel 11 includes a first end 112 and a second end 113 disposed opposite each other, the first end 112 extending to the doctor blade 2 and the second end 113 being away from the doctor blade 2. From the first end 112 to the second end 113, the bottom wall 111 is gradually inclined downward, so as to facilitate ink or wastewater to the position of the second end 113.

[0034] It should also be noted that nozzle 3 can be connected to the cleaning tank through a pipe. The cleaning tank contains cleaning liquid, which is delivered to nozzle 3 by a water pump. The cleaning liquid is then sprayed out from the outlet of nozzle 3, thereby achieving the function of rinsing and cleaning.

[0035] like Figure 4 As shown, in this example, the doctor blade 2 can be installed at the bottom of the mounting frame 1, the anilox roller 8 is located on one side of the mounting frame 1, one end of the doctor blade 2 can contact the surface of the anilox roller 8, and can scrape off excess ink from the surface of the anilox roller 8.

[0036] In some embodiments of this utility model, the bottom wall 111 has a third end and a fourth end along its length, and the bottom wall is gradually inclined downward from the third end to the fourth end.

[0037] In this example, the bottom wall is gradually inclined downward from the third end to the fourth end, so that ink or wastewater can flow out smoothly from the fourth end and then flow out smoothly from the return tank 11, avoiding accumulation in the return tank 11.

[0038] It should be noted that the first end 112 and the third end 113 can be the two ends in the width direction of the bottom wall 111. The third end and the fourth end are the two ends in the length direction of the bottom wall 111.

[0039] In some embodiments of this utility model, the bottom wall 111 has a third end and a fourth end along its length, and the bottom wall gradually slopes downward from the middle of the bottom wall to the third end and the fourth end.

[0040] In this example, the third and fourth ends are the two ends along the length of the bottom wall 111. From the middle of the bottom wall 111 to the third end, the bottom wall 111 gradually slopes downwards. (The last two sentences are a repetition of the previous two and can be omitted.) Figure 3 As shown, the middle of the bottom wall 111 is high and the two ends along the length direction are low, so that ink or wastewater can flow out smoothly from both ends and flow out smoothly from the return tank 11, avoiding accumulation in the return tank 11.

[0041] like Figure 1 As shown, in some embodiments of this utility model, the mounting bracket 1 is further provided with a return channel 6, one end of which is connected to the return groove 11.

[0042] In this example, one end of the flow channel 6 is connected to the return tank 11, and the other end is provided with two branch pipes, namely the first branch pipe and the second branch pipe. The first branch pipe is connected to the ink tank, and the second branch pipe is connected to the wastewater tank.

[0043] When the doctor blade system is in operation, the first branch pipe is open and the second branch pipe is closed. The ink in the ink tank can be pumped to the anilox roller 8. The doctor blade 2 scrapes off excess ink from the anilox roller 8. The excess ink flows along the doctor blade 2 into the return trough 11, then flows into the return channel 6, and finally flows back into the ink tank through the first branch pipe, facilitating ink recycling and reducing waste.

[0044] When cleaning the scraper blade 2, the first branch pipe is closed and the second branch pipe is opened. The nozzle 3 can spray cleaning fluid to clean the scraper blade 2. The cleaned wastewater can flow to the return tank 11, then into the return channel 6, and then into the wastewater tank from the second branch pipe.

[0045] It should be noted that one end of the return channel 11 is directly connected to the return channel 6, so there is no need to set an additional end seal for the return channel 11, which can save costs and is also easy to clean and maintain.

[0046] It should be noted that the return channel 6 can be a return pipe structure, etc., which can be determined by those skilled in the art according to the actual situation, and no specific limitation is made here.

[0047] It should also be noted that the pump body can be a double ink-blocking pump, etc., which can be determined by those skilled in the art according to the actual situation, and no specific limitation is made here.

[0048] It should be noted that the mounting bracket 1 can be configured as a hollow structure, which helps to reduce weight.

[0049] In some embodiments of this utility model, the mounting bracket 1 is provided with the return channel 6 at both ends along the length direction.

[0050] In this example, the mounting bracket 1 is provided with the return channel 6 at both ends along the length direction, that is, the return channel 6 can be provided at both ends of the return groove 11, thereby improving the return efficiency.

[0051] like Figure 1 As shown, in some embodiments of this utility model, the scraper system further includes an airbag 7, which can press the scraper blade 2 tightly onto the mounting bracket 1.

[0052] In this example, the airbag 7 can be mounted on the mounting bracket 1. After the airbag 7 is inflated, it expands to evenly press the scraper blade 2, allowing the scraper blade 2 to conform to the anilox roller 8. That is, it can form an airbag 7-type quick-change scraper blade 2 system. Releasing the air pressure of the airbag 7 can automatically release the scraper blade 2, thereby facilitating quick replacement of the scraper blade 2.

[0053] It should be noted that the scraper blade 2 can be secured using a scraper holder, which is typically made of aluminum alloy or stainless steel to ensure rigidity. The pneumatic control system can adjust the pressure of the scraper blade 2 via air pressure, for example, within a pressure adjustment range of 0.2 MPa to 0.6 MPa. Releasing the air pressure in the air chamber 7 allows the scraper holder to automatically release the old scraper blade 2, thus facilitating quick replacement of the new scraper blade 2.

[0054] like Figure 1 As shown, in some embodiments of this utility model, multiple airbags 7 are provided, and the multiple airbags 7 are spaced apart along the length direction of the scraper blade 2.

[0055] In this example, multiple airbags 7 are spaced apart along the length of the scraper blade 2. The multiple airbags 7 work together to press the scraper blade 2, thereby improving the stability and reliability of the scraper blade 2. The number of airbags 7 can be four, five, six, or seven, etc., which can be determined by those skilled in the art according to the actual situation, and no specific limitation is made here.

[0056] In some embodiments of this utility model, the scraper system further includes a driving component, which is tractively connected to the mounting frame 1. The driving component can drive the mounting frame 1 to move, thereby driving the scraper blade 2 to move.

[0057] In this example, the drive unit is connected to the mounting frame 1, the scraper blade 2 is mounted on the mounting frame 1, and the anilox roller 8 is located on one side of the scraper blade 2. The drive unit can move the mounting frame 1 closer to or away from the anilox roller 8, thereby moving the scraper blade 2 closer to or away from the anilox roller 8.

[0058] It should be noted that the driving component includes a hydraulic cylinder, which is controlled by a solenoid valve to move the scraper blade 2, and the pressure can also be adjusted by a pressure regulating valve.

[0059] It should also be noted that the scraper system also includes a slide rail and an eccentric gear mechanism. The mounting bracket 1 can be slidably mounted on the slide rail, thereby improving the smoothness of the movement of the mounting bracket 1.

[0060] A cardboard printing machine according to a second aspect of the present invention includes the doctor blade system described in the above embodiment. The doctor blade system includes a mounting frame 1, a doctor blade 2, and nozzles 3. The doctor blade 2 is mounted on the mounting frame 1. Multiple nozzles 3 are provided, spaced apart on the side of the mounting frame 1 away from the doctor blade 2. The nozzles 3 have fan-shaped outlets and are capable of spraying cleaning fluid toward the doctor blade 2. The mounting frame 1 has a return channel 11 with a bottom wall 111. The bottom wall 111 includes a first end 112 and a second end 113 disposed opposite to each other. The first end 112 extends to the doctor blade 2, and the bottom wall 111 gradually slopes downward from the first end 112 to the second end 113.

[0061] In this example, the mounting bracket 1 is equipped with nozzles 3, which spray cleaning fluid onto the doctor blade 2, thereby automatically cleaning the doctor blade 2. The nozzles 3 have a fan-shaped structure, providing a pressurizing effect and a large rinsing area, thus better rinsing the bottom of the mounting bracket 1 and the doctor blade 2. The bottom wall 111 of the return trough 11 is inclined, thereby improving the ink return effect.

[0062] Among them, the paperboard printing machine can be a flexographic printing machine, etc., which can be determined by those skilled in the art according to the actual situation, and no specific limitation is made here.

[0063] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0064] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A doctor blade system characterized by, include: Mounting bracket (1) and scraper blade (2), wherein the scraper blade (2) is mounted on the mounting bracket (1); The nozzle (3) is provided in multiple ways. The multiple nozzles (3) are installed at intervals on the side of the mounting bracket (1) away from the scraper blade (2). The outlet of the nozzle (3) is a fan-shaped structure. The nozzle (3) can spray cleaning liquid toward the scraper blade (2). The mounting bracket is provided with a return channel, the return channel has a bottom wall, the bottom wall includes a first end and a second end disposed opposite to each other, the first end extends to the scraper blade, and the bottom wall is gradually inclined downward from the first end to the second end.

2. The scraper system according to claim 1, characterized in that, The bottom wall has a third end and a fourth end along its length, and the bottom wall is gradually inclined downward from the third end to the fourth end.

3. The scraper system according to claim 1, characterized in that, The bottom wall has a third end and a fourth end along its length, and the bottom wall gradually slopes downward from the middle of the bottom wall to the third end and the fourth end.

4. The scraper system according to claim 1, characterized in that, The mounting bracket (1) is also provided with a return channel (6), one end of which is connected to the return groove.

5. The scraper system according to claim 4, characterized in that, The mounting bracket (1) has return channels (6) at both ends along its length.

6. The scraper system according to claim 1, characterized in that, The scraper system also includes an airbag (7) which can press the scraper blade (2) into place on the mounting bracket (1).

7. The scraper system according to claim 6, characterized in that, The airbags (7) are provided in multiple ways, and the multiple airbags (7) are spaced apart along the length direction of the scraper blade (2).

8. The scraper system according to claim 1, characterized in that, The scraper system also includes a drive component, which is connected to the mounting bracket (1) and can drive the mounting bracket (1) to move so as to drive the scraper blade (2) to move.

9. The scraper system according to claim 2, characterized in that, The mounting bracket (1) is a hollow structure.

10. A cardboard printing machine, characterized in that, Includes the scraper system as described in any one of claims 1 to 9.

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