Paper deviation rectifying structure for printing machine

Abstract

The utility model provides a paper deviation rectifying structure for a printing machine. The paper deviation rectifying structure for the printing machine effectively solves the problems that in an existing deviation rectifying structure for the printing machine, friction force on the side edges of paper is large, and the structure is not simple and reliable enough. According to the technical scheme, the device comprises a rack, a transmission belt capable of moving left and right is installed in the rack, a rotating shaft arranged in the front-back direction is arranged above the transmission belt, the end of the rotating shaft is rotationally connected to the rack, and the rotating shaft can actively rotate; the two spiral pieces at the two ends of the rotating shaft are opposite in rotation direction and are symmetrical in the front-back direction. The correcting device is ingenious in structure, friction to the side edges of paper is reduced under the condition that the correcting capacity of the printer is guaranteed, it is guaranteed that the paper can synchronously move along with the conveying belt, the structure is simpler and more reliable, and the correcting and correcting effects are better.

Description

Technical Field

[0001] The utility model relates to the technical field of paper deviation rectification of printing machines, in particular to a paper deviation rectification structure for a printing machine. Background Art

[0002] After the printing machine feeds the paper and then prints, during the transmission process, the paper needs to be aligned with the feeding port of the printer to ensure that the printed pattern on the paper is in the correct position. Otherwise, the printed pattern and text will be offset, resulting in a large number of defective products. In the prior art, a deviation rectification device for adjusting the paper transportation direction on a printing machine disclosed in the patent document CN211140966U, a paper deviation rectification and flattening device for a printing machine disclosed in CN216403205U, a paper deviation rectification device for a printing machine disclosed in CN217417531U, and a printing machine with deviation rectification disclosed in CN220500263U can all, to a certain extent, straighten or correct the paper so that it can be in the correct posture. However, the disadvantages of the above solutions cannot be ignored. In the above solutions, inclined straightening plates or positioning plates are arranged on the conveyor belt. During the process of the paper moving along the conveyor belt, the friction between the paper and the straightening plate or positioning plate is relatively large, resulting in the situation that the paper occasionally cannot move along with the conveyor belt, that is, the paper slips on the conveyor belt. In addition, the above deviation rectification principles are simple but the structures are complex, and the structure needs to be further simplified.

[0003] Now a paper deviation rectification structure for a printing machine is provided, which reduces the friction on the side of the paper while ensuring the deviation rectification ability of the printer, ensures that the paper can move synchronously with the conveyor belt, has a more concise and reliable structure, and better straightening and deviation rectification effects. Summary of the Utility Model

[0004] In view of the above situation, to overcome the deficiencies of the prior art, the utility model provides a paper deviation rectification structure for a printing machine, which effectively solves the problems of large friction on the side of the paper and insufficiently concise and reliable structure in the deviation rectification structure of the existing printing machine.

[0005] The technical solution it adopts is that it includes a frame, a conveyor belt capable of moving left and right is installed inside the frame, there is a rotating shaft arranged along the front-back direction above the conveyor belt, the end of the rotating shaft is rotatably connected to the frame, and the rotating shaft can rotate actively; there are spiral blades at both the front and rear ends of the rotating shaft, and the two spiral blades at both ends of the rotating shaft have opposite spiral directions and are symmetric front and back.

[0006] Further, a motor is connected to the end of the rotating shaft, and the motor is fixed on the frame.

[0007] Further, when the spiral blade rotates, the outer edge of the spiral blade can contact the upper side of the conveyor belt.

[0008] Further, there are multiple rotating shafts.

[0009] Further, the spiral sheet is detachably mounted on the rotating shaft by a plurality of screws.

[0010] The utility model has a clever structure, reduces the friction on the side of the paper while ensuring the deviation rectification ability of the printer, ensures that the paper can move synchronously with the conveyor belt, has a more concise and reliable structure, and has a better effect of straightening and rectifying. Description of the Drawings

[0011] Figure 1 It is the front view of the utility model.

[0012] Figure 2 It is the top view of the utility model.

[0013] Figure 3 It is the overall schematic diagram of the utility model (the frame is not shown). Detailed Embodiment

[0014] The following further elaborates the detailed embodiment of the utility model with reference to the drawings.

[0015] Consisting of Figures 1 to 3 As shown, the utility model includes a frame 1, a conveyor belt 2 capable of moving left and right is installed inside the frame 1, there is a rotating shaft 3 arranged in the front-back direction above the conveyor belt 2, the end of the rotating shaft 3 is rotatably connected to the frame 1, and the rotating shaft 3 can rotate actively; there are spiral sheets 4 at both the front and rear ends of the rotating shaft 3, and the two spiral sheets 4 at both ends of the rotating shaft 3 have opposite spiral directions and are symmetric front and back.

[0016] In order to realize the active rotation of the rotating shaft 3, a motor 5 is connected to the end of the rotating shaft 3, and the motor 5 is fixed on the frame 1.

[0017] In order to realize that the spiral sheet 4 can straighten the paper, when the spiral sheet 4 rotates, the outer edge of the spiral sheet 4 can contact the upper side of the conveyor belt 2.

[0018] In order to ensure that the paper can enter the printing machine properly, there are a plurality of rotating shafts 3.

[0019] In order to adapt to papers of different widths, the spiral sheet 4 is detachably mounted on the rotating shaft 3 by a plurality of screws.

[0020] It should be noted that in this solution, the spiral sheet 4 is equivalent to the straightening plate in the prior art. When the rotating shaft 3 rotates and the paper passes by, the spiral sheets 4 on the same rotating shaft 3 move the paper or the printed book towards the middle, reducing the friction on the side of the paper.

[0021] For the convenience of description, it is assumed that the conveyor belt 2 transports the paper from left to right, and the spiral sheet 4 on the rotating shaft 3 is as Figure 2 , 3In the shown setting, the rotating shaft 3 rotates clockwise; during use, it moves from left to right. When the paper passes through the rotating shaft 3, the rotation of the rotating shaft 3 drives the two spiral blades 4 thereon to rotate, and the spiral blades 4 gather the paper towards the middle. When the width of the paper is adjusted, remove the screws on the spiral blade 4, and then adjust the position of the spiral blade 4 to adapt to papers of different widths.

[0022] The structure of the utility model is ingenious. It reduces the friction on the side of the paper while ensuring the paper alignment ability of the printer, ensures that the paper can move synchronously with the conveyor belt, the structure is more concise and reliable, and the effect of straightening and aligning is better.

Claims

1. A paper deviation correction structure for a printing press, characterized in that: The invention comprises a frame (1), a transmission belt (2) capable of moving left and right is installed in the frame (1), a rotating shaft (3) arranged in the front-to-back direction is arranged above the transmission belt (2), the end of the rotating shaft (3) is rotatably connected to the frame (1), and the rotating shaft (3) can actively rotate; the rotating shaft (3) has spiral plates (4) at both the front and rear ends, and the two spiral plates (4) at both ends of the rotating shaft (3) rotate in opposite directions and are symmetrical in front and back.

2. A paper deviation correction structure for a printing press according to claim 1, characterized in that: The end of the rotating shaft (3) is connected to a motor (5), and the motor (5) is fixed on the frame (1).

3. The paper deviation correction structure for a printing press according to claim 1, characterized in that: When the spiral blade (4) rotates, the outer edge of the spiral blade (4) can contact the upper side surface of the transmission belt (2).

4. The paper deviation correction structure for a printing press according to claim 3, characterized in that: There are multiple rotating shafts (3).

5. A paper deviation correction structure for a printing press according to claim 2, 3 or 4, characterized in that: The spiral sheet (4) is detachably mounted on the rotating shaft (3) via a plurality of screws.

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