Corrugated board printing machine

Abstract

The utility model discloses a corrugated board printing machine, and belongs to the technical field of corrugated board printing. Comprising a printing machine body and a paper conveying belt, the printing machine body is arranged above the paper conveying belt so as to print corrugated boards conveyed to the position below the printing machine body, and the printing machine is characterized by further comprising an intercepting roller; the intercepting roller is located on the upstream of a printer body paper inlet. An intercepting gap is formed between the intercepting roller and the paper conveying belt; the interception gap is smaller than two times of the thickness of the corrugated board and is larger than the thickness of a single-layer corrugated board at the same time; when the corrugated paper is partially folded, due to the fact that the thickness of the folded part is twice that of the corrugated paper, the folded part cannot pass through the gaps of the intercepting rollers, at the moment, the corrugated paper cannot enter the positions between the intercepting rollers or is clamped between the intercepting rollers and does not move, and the folded corrugated paper can be picked out; and the corrugated paper can be fed for printing after the folded part is processed, so that the defective rate of printed finished products can be reduced.

Description

Technical Field

[0001] The invention relates to a corrugated board printing machine, belonging to the technical field of corrugated board printing. Background Art

[0002] Corrugated paper is a plate-like material made by gluing noodle paper and corrugated paper formed by corrugating rollers. It is generally divided into single corrugated paperboard and double corrugated paperboard. Corrugated paper has good cushioning performance, light weight and strong performance, and is widely used in the preparation of transportation packaging products. The outer surface of some corrugated paper used to make packaging products will also be printed with patterns to increase the beauty or identification function. During storage or transportation, corrugated paper is mainly placed in a stacked manner, and its edges may be folded due to squeezing; for example, a corner of the corrugated paper is folded up. The folded part may cause the printed pattern to be missing and become a defective product, so it is necessary to improve the existing printer to prevent the folded corrugated paperboard from entering the printer. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a corrugated board printing machine, which solves the technical problem of preventing folded corrugated board from entering the printer.

[0004] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0005] Solution 1: A corrugated cardboard printing machine, including a printing machine body and a paper conveyor belt, wherein the printing machine body is arranged above the paper conveyor belt to print the corrugated cardboard conveyed to the bottom of the printing machine body, and is characterized in that it also includes an intercepting roller; the intercepting roller is located upstream of the paper inlet of the printing machine body; an intercepting gap is formed between the intercepting roller and the paper conveyor belt; the intercepting gap is less than 2 times the thickness of the corrugated cardboard and greater than the thickness of a single layer of corrugated cardboard. When the corrugated paper is partially folded, since the thickness of the folded part is twice the thickness of the corrugated paper, the folded part cannot pass through the gap of the intercepting roller. At this time, the corrugated paper cannot enter between the intercepting rollers or is stuck between the intercepting rollers and cannot move, and the folded corrugated paper can be picked out. This part of the corrugated paper can be selected and the folded part can be smoothed before being sent for printing, which is beneficial to reduce the defect rate of the printed product.

[0006] Solution 2: Based on Solution 1, in order to further improve the interception of folded corrugated cardboard, the minimum distance between the interception rollers is further limited to be less than 1.5 times the thickness of the corrugated cardboard and greater than the thickness of a single layer of corrugated cardboard. Whether it is transported or stored, the corrugated cardboard is placed in a stacked form. In the stacked corrugated cardboard, the folded part becomes the main stress point due to its protrusion. Compared with the non-folded part, the squeezing force is greater, so the thickness of the single layer of the folded part of the corrugated cardboard is thinner than that of the non-folded part. Therefore, the folded part cannot reach twice its own thickness, so by limiting the minimum distance between the interception rollers to be less than 1.5 times the thickness of the corrugated paper, the folding of the folded corrugated cardboard can be improved.

[0007] Solution 3: Based on Solution 1, a brush is also provided to clean the dust on the surface of the corrugated paperboard to improve the ink coloring effect of the corrugated paper.

[0008] Preferably, it includes a brush capable of cleaning the upper surface of the corrugated paper; the brush can be a pair of brushes, the bristles of the pair of brushes are arranged opposite to each other; the gap between the pair of brushes is set to be equal to or slightly smaller than the thickness of the corrugated paper; the gap between the pair of brushes is opposite to the gap of the intercepting roller.

[0009] Solution 4: Based on Solution 1, in order to reduce the contact time between the cleaned corrugated cardboard and the dust and prevent the dust from falling on the corrugated cardboard again, a brush is set between a pair of relative intercepting rollers and the printing machine body.

[0010] Plan 5: Based on Plan 1, in order to reduce the density of dust particles around the corrugated paper, thereby reducing the occurrence of dust falling onto the surface of the corrugated paper again, it also includes a vacuum tube and a fan used in conjunction with a brush.

[0011] Schematic diagram of the mechanism of the present utility model.

[0012] When the corrugated paper is partially folded, the thickness of the folded part is twice the thickness of the corrugated paper, so the folded part cannot pass through the gap between the intercepting rollers. At this time, the corrugated paper cannot enter between the intercepting rollers or is stuck between the intercepting rollers. The folded corrugated paper can be picked out. This part of the corrugated paper can be processed before sending it to the printer, which is helpful to reduce the defective rate of the printed product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 It is a schematic diagram of the connection structure of the brush part, the dust suction pipe, the dust suction pipe inlet and other components.

[0015] In the figure: 1. Printing machine body; 2. Intercepting roller; 3. Support seat; 4. Brush; 401. Brush part; 5. Paper conveyor belt; 6. Brush support of the brush seat; 7. Dust suction pipe; 701. Dust suction pipe inlet; 8. Fan; 9. Support mechanism. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments.

[0017] In the description of the present invention, it needs to be understood that the terms "lateral", "longitudinal", "end", "edge", "sidewall", "upper", "lower", "upper part", "lower part", "directly above", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "end", "head" and "tail" etc. The orientations or positional relationships indicated are based on the orientations or positional relationships shown in the drawings and are only for the convenience of description.

[0018] like Figure 1 As shown, this embodiment provides a corrugated cardboard printing machine, including a printing machine body 1 and a paper conveyor 5, wherein the printing machine body 1 is arranged above the paper conveyor 5 to print the corrugated cardboard conveyed to the bottom of the printing machine body 1. The paper conveyor 5 is provided by the prior art, including a conveyor body and a driving mechanism, wherein the driving mechanism is controlled by a computer, and when the corrugated cardboard is conveyed to the bottom of the printing machine body 1, it can be sensed, and the computer control program controls the paper conveyor 5 to stop, and the printing machine body 1 starts the printing program. After the printing is completed, the computer control program controls the paper conveyor 5 to start, remove the printed corrugated cardboard, and send the corrugated cardboard to be printed into the printing area. The above are all prior art and will not be described in detail here. It also includes: a corrugated cardboard printing machine, including a printing machine body 1; and an intercepting roller 2; a pair of support seats 3 are fixedly connected to the support mechanism 9 of the paper conveyor 5, and the two ends of the intercepting roller 2 are respectively fixedly installed on a support seat 3; an intercepting gap is formed between the intercepting roller 2 and the paper conveyor 5, and the intercepting gap is less than 2 times the thickness of the corrugated cardboard and greater than the thickness of a single layer of corrugated cardboard.

[0019] When the corrugated paper is partially folded, the thickness of the folded part is twice the thickness of the corrugated paper, so the folded part cannot pass through the interception gap. At this time, the corrugated paper cannot enter the interception gap or is stuck in the interception gap. You can pick out the folded corrugated paper. This part of the corrugated paper can be selected and the folded part can be smoothed before sending it to the printer, which is helpful to reduce the defective rate of the printed product.

[0020] In some embodiments, the minimum distance between the intercepting rollers 2 is less than 1.5 times the thickness of the corrugated paper. Whether it is transported or stored, the corrugated paperboard is placed in a stacked form. In the stacked corrugated paperboard, the folded part becomes the main stress point due to the protrusion. Compared with the non-folded part, the squeezing force is greater, so the single layer thickness of the folded part of the corrugated paperboard is thinner than that of the non-folded part. Therefore, the folded part cannot reach twice its own thickness, so when the minimum distance between the intercepting rollers 2 is close to twice the thickness of the corrugated paper, it may still pass through the intercepting roller 2. However, when the minimum distance between the intercepting rollers 2 is less than 1.5 times the thickness of the corrugated paper, basically all the folded corrugated paper can be intercepted.

[0021] like Figure 1 As shown, in some embodiments, it further includes a brush 4 capable of cleaning the upper surface of the corrugated paper; a brush holder 6 is fixedly mounted on the conveying device, and the brush 4 is fixedly mounted on the brush holder 6, and the brush holder 6 is fixedly connected to the support mechanism 9 of the conveying device. The gap between the brush 4 and the conveying device is set to be equal to or slightly smaller than the thickness of the corrugated paper, so that the corrugated paper can pass smoothly, and the brush part 401 can contact the upper surface of the corrugated paper to remove dust.

[0022] When the corrugated paper passes through the gap between the pair of brushes 4, the upper surface of the corrugated paper comes into contact with the brush portion 401 of the brush 4, thereby cleaning the dust on the surface of the corrugated paper and improving the printing effect.

[0023] like Figure 1 As shown, in some embodiments, the brush 4 is disposed between a pair of opposing intercepting rollers 2 and the printer body 1. In this way, the corrugated paper can immediately enter the printer body 1 after the surface is cleaned, thereby reducing the contact time between the cleaned corrugated paper and the outside, and avoiding dust from falling on the corrugated paper again to the greatest extent.

[0024] like Figure 1As shown, in some embodiments, a dust suction tube 7 and a fan 8 are also included for use with the brush 4. The inlet end of the dust suction tube 7 is fixedly connected to the brush 4, and the outlet end of the dust suction tube 7 is connected to the fan 8; the fan 8 sucks out from the dust suction tube 7, and most of the dust that is swept away will be sucked away by the fan 8 after leaving the surface of the corrugated paper. Since the dust cleaned by the brush 4 has left the surface of the corrugated paper, it is still densely surrounded by the corrugated paper, so a small amount of dust still falls back on the surface of the corrugated paper before the corrugated paper enters the printing device. By providing the dust suction tube 7 and the fan 8, most of the dust that is swept away will be sucked away by the fan 8 after leaving the surface of the corrugated paper, which is conducive to reducing the density of dust particles around the corrugated paper, thereby reducing the occurrence of dust falling on the surface of the corrugated paper again, which is conducive to improving the cleaning effect.

[0025] like Figure 2 As shown, in some embodiments, the bristles of the brush 4 surround the dust suction pipe inlet 701, which is beneficial to improve the dust suction efficiency.

[0026] The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A corrugated cardboard printing machine, comprising a printing machine body and a paper conveyor belt, wherein the printing machine body is arranged above the paper conveyor belt to print the corrugated cardboard conveyed to the bottom of the printing machine body, characterized in that: It also includes an intercepting roller; the intercepting roller is located upstream of the paper inlet of the printing machine body; an intercepting gap is formed between the intercepting roller and the paper conveyor belt; the intercepting gap is less than twice the thickness of the corrugated cardboard and greater than the thickness of a single-layer corrugated cardboard.

2. A corrugated board printing machine according to claim 1, characterized in that: The interception gap is less than 1.5 times the thickness of the corrugated paper and greater than the thickness of a single-layer corrugated paperboard.

3. A corrugated board printing machine according to claim 1, characterized in that: The utility model also comprises a brush capable of cleaning the upper surface of the corrugated paper, and the brush is fixedly arranged at the paper inlet of the printing machine body.

4. A corrugated board printing machine according to claim 2, characterized in that: The brush is arranged between a pair of opposing intercepting rollers and the printing machine body.

5. A corrugated board printing machine according to claim 1, characterized in that: It also includes a vacuum tube and a blower for use with the brush.

6. A corrugated board printing machine according to claim 1, characterized in that: The bristles of the brush surround the suction pipe inlet.

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