Diffuse reflection paper guide roller

Abstract

The utility model relates to the technical field of printing, and discloses a diffuse reflection paper guide roller which comprises a roller shaft and two supports, the interior of the roller shaft is hollow, a diffuse reflection area is arranged on the outer side wall of the roller shaft, the two supports are located on the two sides of the roller shaft, and the top ends of the two supports penetrate through and are rotationally connected with hollow shafts through bearings. A first connecting plate is fixedly connected to the end, close to the roller shaft, of the hollow shaft, hollow side shafts are fixedly connected to the two ends of the roller shaft, and a second connecting plate is fixedly connected to the ends, away from the roller shaft, of the side shafts. According to the utility model, the roller shaft, the side shaft, the two brackets, the hollow shaft, the first connecting plate, the second connecting plate and the mounting assembly are arranged, the diffuse reflection area is arranged on the surface of the roller shaft, and a scanning electric eye of a printing machine uses the diffuse reflection area as a reflecting surface to form contrast with a printed scanning guide line, so that an image-text printing position deviation signal is obtained; the feedback is fed back to the control mechanism to avoid paper offset.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, in particular to a diffuse reflection paper guide roller. Background Art

[0002] A printing press is a machine used to print text and images, generally including a paper feeding device, a positioning and transferring device, a printing device, a post-processing device, and a paper receiving device. Both the paper feeding device and the paper receiving device require paper guide rollers for paper guiding, but the existing paper guide rollers have the following disadvantages:

[0003] 1. The surface of the existing paper guide roller is smooth, and the paper is prone to slippage between the paper and the guide roller, causing the paper to deviate. In addition, the smooth guide roller is prone to mirror reflection, which affects the scanning positioning of the printing machine's scanning electric eye on the side of the paper, and further affects the control mechanism from obtaining the image and text printing position deviation signal;

[0004] 2. The installation and removal of the existing paper guide roller is not convenient enough. Once the surface of the paper guide roller is concave or convex, it will cause indentations or scratches on the surface of the paper, and the paper guide roller is not convenient to be quickly disassembled and repaired;

[0005] 3. Since the ink on the surface of the paper will not dry immediately after printing, there is no function to preheat and dry the paper before entering the drying equipment, and the functionality of the paper guide roller is relatively simple.

[0006] Therefore, the utility model proposes a diffuse reflection paper guide roller to address the above shortcomings. Utility Model Content

[0007] The utility model aims to solve the shortcomings in the prior art and proposes a diffuse reflection paper guide roller.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a diffuse reflection paper guide roller, comprising a roller shaft and two brackets, the interior of the roller shaft is hollow, and the outer wall of the roller shaft is provided with a diffuse reflection area, the two brackets are located on both sides of the roller shaft, and the top ends of the two brackets are penetrated by a hollow shaft and rotatably connected through bearings, the hollow shaft is fixedly connected with a first connecting plate near one end of the roller shaft, both ends of the roller shaft are fixedly connected with a hollow side shaft, and the side shaft is fixedly connected with a second connecting plate away from the roller shaft, symmetrical connecting holes are opened on the sides of the second connecting plate and the first connecting plate, the surface of the hollow shaft is provided with an installation component for fixing the first connecting plate and the second connecting plate, and a heating component is installed at the end of any hollow shaft away from the roller shaft.

[0009] As a further description of the above technical solution:

[0010] The bottom ends of the two brackets are fixedly connected with a mounting plate, and a plurality of mounting holes are opened on the side of the mounting plate.

[0011] As a further description of the above technical solution:

[0012] The width of the diffuse reflection area is greater than 2 mm or covers the entire roller.

[0013] As a further description of the above technical solution:

[0014] The roller surface roughness of the roller is Ra0.5-5um, and the roller surface whiteness is 50-100%.

[0015] As a further description of the above technical solution:

[0016] The mounting assembly includes an annular plate fixed to the surface of the hollow shaft and a sliding sleeve slidably sleeved on the surface of the hollow shaft, a spring is fixedly connected between the sliding sleeve and the annular plate, a plurality of plug rods are fixed on the side of the sliding sleeve away from the spring, and the plug rods are inserted into the connecting holes.

[0017] As a further description of the above technical solution:

[0018] The inner wall of the sliding sleeve is fixedly connected with a sliding block, the outer wall of the hollow shaft is provided with a groove, and the sliding block is located inside the groove and is slidably connected with the groove.

[0019] As a further description of the above technical solution:

[0020] The heating assembly includes a sleeve rotatably sleeved on the surface of a hollow shaft, a vertical rod is fixed to the bottom end of the outer wall of the sleeve, the bottom end of the vertical rod is fixedly connected to the upper surface of a mounting plate, a side tube is fixedly connected to the middle of the sleeve, an electric heating wire is fixed inside the side tube, and the side tube is connected to an air pump at one end away from the sleeve.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by setting a roller shaft, a side shaft, two brackets, a hollow shaft, a first connecting plate, a second connecting plate and a mounting assembly, a diffuse reflection area is provided on the surface of the roller shaft, and the scanning electric eye of the printing machine uses the diffuse reflection area as a reflection surface to form a contrast with the printed scanning guide line, thereby obtaining a graphic printing position deviation signal, which is fed back to the control mechanism to avoid paper deviation. Secondly, the second connecting plates at both ends of the roller shaft can be quickly docked with the hollow shafts at the top of the two brackets through the mounting assembly, thereby making the disassembly and installation of the roller shaft more convenient, which is conducive to repairing the roller shaft surface.

[0023] 2. In the utility model, by setting a vertical rod and a heating component, hot air is blown into the inside of the roller through the heating component, thereby heating the roller, and then the roller is used to heat the paper, which can accelerate the drying of the ink on the surface of the paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall cross-sectional view of the utility model;

[0025] Figure 2 It is a three-dimensional diagram of the roller shaft of the utility model;

[0026] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0027] Legend:

[0028] 1. Roller; 2. Bracket; 3. Mounting plate; 4. Hollow shaft; 5. First connecting plate; 6. Side shaft; 7. Second connecting plate; 8. Connecting hole; 9. Mounting assembly; 91. Ring plate; 92. Sliding sleeve; 93. Spring; 94. Insert rod; 95. Sliding block; 96. Groove; 10. Diffuse reflection area; 11. Vertical pole; 12. Bushing; 13. Side tube; 14. Electric heating wire. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Reference Figure 1-Figure 3 The utility model provides an embodiment: a diffuse reflection paper guide roller, comprising a roller shaft 1 and two brackets 2, the roller shaft 1 is hollow inside, and the outer wall of the roller shaft 1 is provided with a diffuse reflection area 10, the two brackets 2 are located on both sides of the roller shaft 1, the tops of the two brackets 2 are penetrated and rotatably connected with a hollow shaft 4 through a bearing, the hollow shaft 4 is fixedly connected with a first connecting plate 5 at one end close to the roller shaft 1, both ends of the roller shaft 1 are fixedly connected with a hollow side shaft 6, and the side shaft 6 is fixedly connected with a second connecting plate 7 at one end away from the roller shaft 1, symmetrical connecting holes 8 are opened on the sides of the second connecting plate 7 and the first connecting plate 5, a mounting assembly 9 for fixing the first connecting plate 5 and the second connecting plate 7 is provided on the surface of the hollow shaft 4, and a heating assembly is installed at one end of any hollow shaft 4 away from the roller shaft 1.

[0031] Reference Figure 1 The bottom ends of the two brackets 2 are fixedly connected with a mounting plate 3, and a plurality of mounting holes are opened on the side of the mounting plate 3.

[0032] The bracket 2 can be fixed on the printing device through the mounting plate 3 , and the bracket 2 can support the roller 1 .

[0033] Reference Figure 2 The width of the diffuse reflection area 10 is greater than 2 mm or covers the entire roller.

[0034] In this embodiment, the diffuse reflection area 10 is located on the side of the roller 1 surface, and the diffuse reflection area 10 is located close to the scanning electric eye position of the printing press. The scanning electric eye uses the diffuse reflection area 10 as a reflection surface to form a contrast with the printed scanning guide line, thereby obtaining a graphic printing position deviation signal, which is fed back to the control mechanism to avoid mirror reflection causing misjudgment of the scanning electric eye.

[0035] Reference Figure 2 The roller surface roughness of roller 1 is Ra0.5-5um, and the surface whiteness of roller 1 is 50-100%.

[0036] Reference Figure 1-Figure 3 The mounting assembly 9 includes an annular plate 91 fixed to the surface of the hollow shaft 4 and a sleeve 92 slidably sleeved on the surface of the hollow shaft 4. A spring 93 is fixedly connected between the sleeve 92 and the annular plate 91. A plurality of plug rods 94 are fixed on the side of the sleeve 92 away from the spring 93, and the plug rods 94 are inserted into the connecting hole 8.

[0037] The spring 93 pushes the sleeve 92 so that the insertion rod 94 on the sleeve 92 can be inserted into the connecting holes 8 on the first connecting plate 5 and the second connecting plate 7, thereby achieving a fixed connection between the first connecting plate 5 and the second connecting plate 7, and also fixing the roller shaft 1 between the two hollow shafts 4.

[0038] Reference Figure 3 A slider 95 is fixedly connected to the inner wall of the sliding sleeve 92 , a groove 96 is formed on the outer wall of the hollow shaft 4 , and the slider 95 is located inside the groove 96 and is slidably connected to the groove 96 .

[0039] The movement of the sliding sleeve 92 is limited by the slider 95 and the groove 96 , so that the sliding sleeve 92 can be prevented from rotating on the surface of the hollow shaft 4 .

[0040] Reference Figure 1 and Figure 3 The heating component includes a sleeve 12 which is rotatably sleeved on the surface of the hollow shaft 4, a vertical rod 11 is fixed to the bottom end of the outer wall of the sleeve 12, the bottom end of the vertical rod 11 is fixedly connected to the upper surface of the mounting plate 3, a side tube 13 is fixedly connected to the middle of the sleeve 12, an electric heating wire 14 is fixed inside the side tube 13, and the end of the side tube 13 away from the sleeve 12 is connected to the air pump.

[0041] The shaft sleeve 12 and the hollow shaft 4 are rotatably connected by a sealed bearing, so that the air entering from the side pipe 13 can only enter the interior of the roller shaft 1 along the hollow shaft 4 .

[0042] Working principle: When paper passes through the surface of the roller 1, air can be pumped into the side tube 13 through an air pump. After being heated by the electric heating wire 14, the air will enter the roller 1 to heat the roller 1. The roller 1 is then used to heat the paper on the surface to accelerate the drying of the ink on the paper surface. The air is then discharged from another hollow shaft 4. When the surface of the roller 1 needs to be repaired, the sliding sleeve 92 can be pulled away from the first connecting plate 5 and the second connecting plate 7, and the insertion rod 94 can be disengaged from the connecting hole 8 on the first connecting plate 5 and the second connecting plate 7, and then the roller 1 can be removed from between the two hollow shafts 4.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A diffuse reflection paper guide roller, characterized in that: The invention comprises a roller shaft (1) and two brackets (2), wherein the roller shaft (1) is hollow inside and a diffuse reflection area (10) is provided on the outer wall of the roller shaft (1), the two brackets (2) are located on both sides of the roller shaft (1), and a hollow shaft (4) is passed through the top of the two brackets (2) and is rotatably connected to the hollow shaft (4) via a bearing, the first connecting plate (5) is fixedly connected to the end of the hollow shaft (4) close to the roller shaft (1), the two ends of the roller shaft (1) are fixedly connected to a hollow side shaft (6), and the end of the side shaft (6) away from the roller shaft (1) is fixedly connected to a second connecting plate (7), the second connecting plate (7) and the first connecting plate (5) are provided with symmetrical connecting holes (8) on the sides, the surface of the hollow shaft (4) is provided with a mounting assembly (9) for fixing the first connecting plate (5) and the second connecting plate (7), and a heating assembly is installed at the end of any hollow shaft (4) away from the roller shaft (1).

2. A diffuse reflection paper guide roller according to claim 1, characterized in that: The bottom ends of the two brackets (2) are fixedly connected to a mounting plate (3), and a plurality of mounting holes are provided on the side of the mounting plate (3).

3. The diffuse reflection paper guide roller according to claim 1, characterized in that: The width of the diffuse reflection area (10) is greater than 2 mm or covers the entire roller.

4. The diffuse reflection paper guide roller according to claim 1, characterized in that: The roller surface roughness of the roller (1) is Ra0.5-5um, and the surface whiteness of the roller (1) is 50-100%.

5. The diffuse reflection paper guide roller according to claim 1, characterized in that: The mounting assembly (9) comprises an annular plate (91) fixed to the surface of the hollow shaft (4) and a sliding sleeve (92) slidably sleeved on the surface of the hollow shaft (4); a spring (93) is fixedly connected between the sliding sleeve (92) and the annular plate (91); a plurality of insertion rods (94) are fixed to a side of the sliding sleeve (92) away from the spring (93), and the insertion rods (94) are inserted into the interior of the connecting hole (8).

6. The diffuse reflection paper guide roller according to claim 5, characterized in that: A sliding block (95) is fixedly connected to the inner wall of the sliding sleeve (92), a groove (96) is formed on the outer wall of the hollow shaft (4), and the sliding block (95) is located inside the groove (96) and is slidably connected to the groove (96).

7. The diffuse reflection paper guide roller according to claim 2, characterized in that: The heating assembly comprises a sleeve (12) rotatably sleeved on the surface of a hollow shaft (4); a vertical rod (11) is fixed to the bottom end of the outer wall of the sleeve (12); the bottom end of the vertical rod (11) is fixedly connected to the upper surface of the mounting plate (3); a side tube (13) is fixedly connected to the middle of the sleeve (12); an electric heating wire (14) is fixed inside the side tube (13); and the end of the side tube (13) away from the sleeve (12) is connected to an air pump.

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