Folding machine capable of automatically adjusting gap between folding rollers

Abstract

A folding machine capable of automatically adjusting a gap between folding rollers comprises a machine table, a roller shaft assembly and an adjusting assembly. The roller shaft assembly comprises a left upper roller, a right upper roller, a left lower roller and a right lower roller. The adjusting assembly comprises an upper air cylinder, an upper plate, a lower air cylinder and a lower plate. The two ends of the upper left roller and the two ends of the lower left roller are rotationally arranged on the machine table respectively, and the two ends of the upper right roller and the two ends of the lower right roller are rotationally arranged on the upper plate and the lower plate respectively. The folding machine is driven by the upper air cylinder and the lower air cylinder and pushes the upper plate and the lower plate to rotate respectively, so that the gap distance between the folding rollers is changed, the upper spring and the lower spring can ensure that the upper plate and the lower plate can abut against the output ends of the upper air cylinder and the lower air cylinder respectively, and the gap distance between the folding rollers is accurately controlled. According to the folding machine capable of automatically adjusting the gap between the folding rollers, the machine adjusting mode is convenient, rapid, accurate and efficient, manual pull rod packing paper is not needed for adjustment, and the machine adjusting work is changed into digital screen operation from physical labor and experiencing.

Description

Technical Field

[0001] This utility model relates to the field of folding machine adjustment technology, and in particular to a folding machine that automatically adjusts the gap between folding rollers. Background Technology

[0002] A folding machine is a modern printing device that emerged alongside the modern printing industry. It is an instrument used to fold papers of various sizes and thicknesses within a design scope. For example, Chinese patent CN201610324773.4 discloses a high-speed negative suction roller folding machine, including a frame, a paper stacking platform, a folding mechanism, and a paper feeding mechanism that feeds the paper from the stacking platform to the folding mechanism. The folding roller gap adjustment mechanism includes a mounting arm, a tension spring, an adjusting rod, and an adjusting head. The mounting arm is hinged to the frame, and the folding roller is rotatably mounted on one end of the mounting arm via bearings. The adjusting rod and tension spring are connected to the other end of the mounting arm; one end of the tension spring is connected to the mounting arm, and the other end is fixed to the frame. One end of the adjusting rod is connected to the mounting arm, and the other end acts on the adjusting head, which is fixedly mounted on the frame. Because the tension spring pulls on one end of the mounting arm, the folding roller mounted on the other end of the mounting arm rests against the previous folding roller. This folding machine has advantages such as high folding efficiency, stable operation, and low noise. However, when adjusting the gap between the folding rollers, it is necessary to manually pull open the adjusting head and place paper between the adjusting head and the adjusting rod. This is time-consuming and laborious, and the paper is easily torn. Human operation is prone to oversight, which may result in the paper not being properly placed, thus making ineffective adjustment. Summary of the Invention

[0003] In view of this, the present invention provides a folding machine that automatically adjusts the gap between the folding rollers to solve the above problems.

[0004] A folding machine with automatic adjustment of the folding roller gap includes a machine base, a roller assembly disposed on the machine base, and two adjustment components respectively disposed at both ends of the roller assembly. The roller assembly includes an upper left roller disposed on the machine base, an upper right roller disposed to one side of the upper left roller, a lower left roller disposed on the machine base and located below the upper left roller, and a lower right roller disposed to one side of the lower left roller. Each adjustment component includes an upper cylinder, an upper plate located at the output end of the upper cylinder, a lower cylinder disposed to one side of the upper cylinder, and a lower plate located at the output end of the lower cylinder. The two ends of the upper left roller and the lower left roller are rotatably disposed on the machine base, and the two ends of the upper right roller and the lower right roller are rotatably disposed on the upper and lower plates, respectively.

[0005] Furthermore, the middle section of the upper plate is rotatably connected to the machine base, and the output direction of the upper cylinder is toward the end of the upper plate away from the upper right roller.

[0006] Furthermore, the upper plate has an upper spring at the end away from the upper cylinder, one end of which abuts against the upper plate and the other end is fixedly connected to the machine base.

[0007] Furthermore, the middle section of the lower plate is rotatably connected to the machine base, and the output direction of the lower cylinder is toward the end of the lower plate away from the lower right roller.

[0008] Furthermore, the lower plate has a lower spring at the end away from the lower cylinder, one end of which abuts against the lower plate and the other end is fixedly connected to the machine base.

[0009] Compared with existing technologies, the folding machine with automatic adjustment of folding roller gap provided by this utility model is driven by the upper and lower cylinders, which respectively push the upper and lower plates to rotate, thereby changing the gap distance between the folding rollers. The upper and lower springs ensure that the upper and lower plates can respectively abut against the output ends of the upper and lower cylinders, thus accurately controlling the gap distance between the folding rollers. The folding machine with automatic adjustment of folding roller gap is convenient, quick, precise and efficient in its adjustment method, eliminating the need for manual adjustment by pulling rods and padding paper, and transforming the adjustment work from physical labor and experience-based methods into digital screen operation. Attached Figure Description

[0010] Figure 1 A schematic diagram of the structure of the folding machine with automatic adjustment of the folding roller gap provided by this utility model.

[0011] Figure 2 for Figure 1 A cross-sectional schematic diagram of AA, which automatically adjusts the gap between the folding rollers.

[0012] Figure 3 for Figure 1 An enlarged schematic diagram of point B where the gap between the automatically adjusting folding rollers is located. Detailed Implementation

[0013] The specific embodiments of this utility model are described in further detail below. It should be understood that the description of the embodiments of this utility model herein is not intended to limit the scope of protection of this utility model.

[0014] like Figure 1 The diagram shows the structure of the folding machine with automatic adjustment of folding roller gap provided by this utility model. The folding machine with automatic adjustment of folding roller gap includes a machine base 10, a roller assembly 20 disposed on the machine base 10, and two adjustment components 30 respectively disposed at both ends of the roller assembly 20. It is conceivable that the folding machine with automatic adjustment of folding roller gap also includes other functional modules, such as a power supply module, a folding module, etc., which are technologies known to those skilled in the art and will not be described in detail here.

[0015] The machine base 10 is used to support various components so that they can cooperate in various ways to adjust the gap between the folding rollers.

[0016] Please refer to the following: Figure 2 and Figure 3 The roller assembly 20 includes an upper left roller 21 disposed on the machine base 10, an upper right roller 22 disposed on one side of the upper left roller 21, a lower left roller 23 disposed on the machine base 10 and located below the upper left roller 21, and a lower right roller 24 disposed on one side of the lower left roller 23.

[0017] It should be noted that the roller assembly 20 is mainly used to compress the folded paper, creating a crease at the fold position and improving the folding effect. The four rollers within the roller assembly 20 are all types of folding rollers. The upper left roller 21 and the lower left roller 23 are rotatably mounted on the machine base 10 via bearings at both ends, and the upper right roller 22 and the lower right roller 24 are rotatably mounted on the two adjusting assemblies 30 via bearings at both ends. Their specific configuration will be described below.

[0018] The adjustment assembly 30 includes an upper cylinder 31, an upper plate 32 located at the output end of the upper cylinder 31, a lower cylinder 33 disposed on one side of the upper cylinder 31, and a lower plate 34 located at the output end of the lower cylinder 33.

[0019] One end of the upper plate 32 is rotatably connected to the end of the upper right roller 22, and the middle section of the upper plate 32 is rotatably connected to the machine base 10. The output direction of the upper cylinder 31 is toward the end of the upper plate 32 away from the upper right roller 22 and abuts against the end of the upper plate 32. In this way, the upper cylinder 31 can drive the output end to move and push one end of the upper plate 32 to swing, so that the upper right roller 22 located at the other end of the upper plate 32 is displaced, changing the distance between the upper right roller 22 and the upper left roller 21.

[0020] The upper plate 32 has an upper spring 35 at the end away from the upper cylinder 31. One end of the upper spring 35 abuts against the end of the upper plate 32 where the upper right roller 22 is located, and the other end is fixedly connected to the machine base 10. When the upper cylinder 31 drives and pushes the upper plate 32, the upper spring 35 is compressed. The resulting clamping force allows the upper plate 32 to press against the output end of the upper cylinder 31, thereby precisely controlling the displacement change of the upper right roller 22 to ensure the gap change between the left and right upper rollers 21 and 22.

[0021] One end of the lower plate 34 is rotatably connected to the end of the lower right roller 24, and the middle section of the lower plate 34 is rotatably connected to the machine base 10. The output direction of the lower cylinder 33 is towards the end of the lower plate 34 away from the lower right roller 24 and abuts against the end of the lower plate 34. In this way, the lower cylinder 33 can drive the output end to move and push one end of the lower plate 34 to swing, so that the lower right roller 24 located at the other end of the lower plate 34 is displaced, changing the distance between the lower right roller 24 and the lower left roller 23. It is conceivable that the machine base 10 should be provided with a sliding groove for accommodating the sliding of the upper right roller 22 and the lower right roller 24 to ensure accurate position movement.

[0022] The lower plate 34 has a lower spring 36 at the end away from the lower cylinder 33. One end of the lower spring 36 abuts against the end of the lower plate 34 where the right lower roller 24 is located, and the other end is fixedly connected to the machine base 10. When the lower cylinder 33 drives and pushes the lower plate 34, the lower spring 36 is compressed. The clamping force generated by the spring compresses the lower plate 34 so that it can press against the output end of the lower cylinder 33, thereby precisely controlling the displacement of the right lower roller 24 to ensure the gap between the left and right lower rollers 23 and 24.

[0023] The movement and pushing amount of the upper and lower cylinders 31 and 33 at their output ends are controlled by the PLC control program. Therefore, it is only necessary to directly input the required folding thickness of the paper into the computer module of the folding machine, and the PLC control program will automatically calculate and control the upper and lower cylinders 31 and 33 to drive and push a certain distance so that the gap between the folding rollers matches the folding thickness of the paper. The PLC control program can be executed and completed by a programmed program. As long as those skilled in the art know the working principle of this invention, they can use existing computer programs such as VB and VC to compile corresponding programs to execute it. Therefore, these computer programs themselves should be considered prior art.

[0024] The folding machine with automatic adjustment of the folding roller gap also includes a guide plate 40 disposed on one side of the roller assembly 20. The guide plate 40 is located in the output direction of the roller assembly 20 and is used to guide the folded paper so that it enters the next folding process.

[0025] Compared with existing technologies, the folding machine with automatic adjustment of folding roller gap provided by this utility model is driven by the upper and lower cylinders 31 and 33, which respectively push the upper and lower plates 32 and 34 to rotate, thereby changing the gap distance between the folding rollers. The upper and lower springs 35 and 36 ensure that the upper and lower plates 32 and 34 can respectively abut against the output ends of the upper and lower cylinders 31 and 33, thereby accurately controlling the gap distance between the folding rollers. The folding machine with automatic adjustment of folding roller gap is convenient, quick, accurate and efficient in its adjustment method, eliminating the need for manual adjustment by pulling rods and padding paper, and transforming the adjustment work from physical labor and experience-based methods into digital screen operation.

[0026] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions or improvements within the spirit of the present utility model are covered within the scope of the claims of the present utility model.

Claims

1. A folding machine for automatically adjusting the gap between folding rollers, characterized in that: The folding machine with automatic adjustment of folding roller gap includes a machine base, a roller assembly disposed on the machine base, and two adjustment components disposed at both ends of the roller assembly. The roller assembly includes an upper left roller disposed on the machine base, an upper right roller disposed on one side of the upper left roller, a lower left roller disposed on the machine base and located below the upper left roller, and a lower right roller disposed on one side of the lower left roller. The adjustment components include an upper cylinder, an upper plate located at the output end of the upper cylinder, a lower cylinder disposed on one side of the upper cylinder, and a lower plate located at the output end of the lower cylinder. The two ends of the upper left roller and the lower left roller are rotatably disposed on the machine base, and the two ends of the upper right roller and the lower right roller are rotatably disposed on the upper and lower plates, respectively.

2. The folding machine automatically adjusting the clearance of folding rollers according to claim 1, characterized in that: The middle section of the upper plate is rotatably connected to the machine base, and the output direction of the upper cylinder is toward the end of the upper plate away from the upper right roller.

3. The folding machine with automatic adjustment of folding roller gap according to claim 1, characterized in that: The upper plate has an upper spring at the end away from the upper cylinder. One end of the upper spring abuts against the upper plate, and the other end is fixedly connected to the machine base.

4. The folding machine automatically adjusting the clearance of folding rollers according to claim 1, characterized in that: The middle section of the lower plate is rotatably connected to the machine base, and the output direction of the lower cylinder is toward the end of the lower plate away from the lower right roller.

5. The folding machine automatically adjusting the clearance of folding rollers according to claim 1, characterized in that: The lower plate has a lower spring at the end away from the lower cylinder. One end of the lower spring abuts against the lower plate, and the other end is fixedly connected to the machine base.

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