Paper cutting device with adjustable cutting length

Abstract

The invention relates to the technical field of paper cutting production, in particular to a cutting-length-adjustable paper cutting device which comprises an equipment frame and further comprises a length-adjustable cutting assembly, the length-adjustable cutting assembly comprises a cutting roller and a negative-pressure adsorption roller, the cutting roller and the negative-pressure adsorption roller are rotationally installed in the equipment frame, and the cutting roller and the negative-pressure adsorption roller are rotationally installed in the equipment frame; the cutting roller and the negative pressure adsorption roller are respectively driven by a group of driving motors to rotate, the cutting roller is provided with a first cutting knife, the negative pressure adsorption roller is used for pulling paper materials, and the first cutting knife can cut off the paper materials positioned on the negative pressure adsorption roller; according to the paper cutting device with the adjustable cutting length, the defect that in the prior art, the cutting length of paper cannot be adjusted is overcome.

Description

Technical Field

[0001] This invention relates to the field of paper cutting production technology, and in particular to a paper cutting device with adjustable cutting length. Background Technology

[0002] Paper cutting device is used to cut long finished paper into the required size. In the prior art, such as the tissue paper folding machine for tissue paper production proposed in Chinese Patent Publication No.: CN118083676B, the paper cutting operation is completed by the cooperation of the upper blade and the bottom blades set on the first bottom blade roller and the second bottom blade roller.

[0003] However, the cutting length of the paper cannot be adjusted in this device, making it difficult to adapt to the production of different paper specifications and hindering on-demand switching of the production line. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies that cannot adjust the cutting length of paper, and to propose a paper cutting device with adjustable cutting length.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a paper cutting device with adjustable cutting length, including a device frame, and further including:

[0007] An adjustable-length cutting assembly includes a cutting roller and a negative pressure adsorption roller. The cutting roller and the negative pressure adsorption roller are rotatably mounted within the equipment frame. Each of the cutting roller and the negative pressure adsorption roller is driven to rotate by a set of drive motors. The cutting roller is equipped with a first cutting blade. The negative pressure adsorption roller is used to pull paper material. The first cutting blade can cut the paper material located on the negative pressure adsorption roller.

[0008] Preferably, the first cutting blade is arranged in multiple sets around the circumference of the cutting roller.

[0009] Preferably, the outer surface of the cutting roller is provided with a first groove, and a blade holder is fixedly installed inside the first groove by screws, and a first cutting blade is snapped onto the blade holder.

[0010] Preferably, multiple sets of fastening bolts are abutted on the upper and lower sides of the tool holder, and the fastening bolts can be threaded into the inner wall of the first slot.

[0011] Preferably, the outer surface of the negative pressure adsorption roller is provided with a second groove, and a second cutting blade is snapped into the inside of the second groove, and the first cutting blade can fit into the second cutting blade.

[0012] Preferably, multiple sets of the second slot and the second cutting blade are arranged around the circumference of the negative pressure adsorption roller.

[0013] Preferably, two sets of the cutting roller and the negative pressure adsorption roller are provided in cooperation.

[0014] The paper cutting device with adjustable cutting length proposed in this invention has the following advantages:

[0015] The system consists of a negative pressure adsorption roller and a cutting roller, each driven by a set of drive motors. The cutting roller is equipped with a first cutting blade, and the negative pressure adsorption roller is used to pull the paper material. Whenever the first cutting blade on the cutting roller rotates to the point of tangency with the negative pressure adsorption roller, a cutting action is completed on the paper material. When the speed of the cutting roller remains constant and the speed of the negative pressure adsorption roller is changed, the length of the paper material passing through the negative pressure adsorption roller per unit time will change, thereby realizing the adjustment of the cutting length of the paper material. Attached Figure Description

[0016] Figure 1 A schematic diagram of the three-dimensional structure with the main body as the core;

[0017] Figure 2 A schematic diagram of the side sectional view of the main structure;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the cutting roller;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the negative pressure adsorption roller.

[0020] In the diagram: 1. Equipment frame; 2. Cutting roller; 3. Negative pressure adsorption roller; 4. Folding roller; 5. Auxiliary roller; 6. First slot; 7. Knife holder; 8. First cutting knife; 9. Fastening bolt; 10. Second slot; 11. Second cutting knife; 12. Drive motor; 13. Paper material. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Example 1

[0023] Reference Figure 1 , Figure 2 A paper cutting device with adjustable cutting length, including a device frame 1, and further comprising:

[0024] The length-adjustable cutting assembly includes a cutting roller 2 and a negative pressure adsorption roller 3. The cutting roller 2 and the negative pressure adsorption roller 3 are rotatably installed in the equipment frame 1. The cutting roller 2 and the negative pressure adsorption roller 3 are each driven to rotate by a set of drive motors 12. The cutting roller 2 is equipped with a first cutting blade 8. The negative pressure adsorption roller 3 is used to pull the paper material 13. The first cutting blade 8 can cut the paper material 13 located on the negative pressure adsorption roller 3.

[0025] Working principle:

[0026] Reference Figure 2 To improve the traction effect on the paper material 13, multiple sets of auxiliary rollers 5 are rotatably installed inside the equipment frame 1, which cooperate with the cutting roller 2 and the negative pressure adsorption roller 3; a folding roller 4 is also provided at the discharge end of the negative pressure adsorption roller 3. Since the working principle of the negative pressure adsorption roller 3 and the cooperation method between the negative pressure adsorption roller 3 and the folding roller 4 are not innovative parts of this case, and this part can directly adopt the structure in the prior art (the existing patent cited in the background art), it will not be described in detail.

[0027] Paper material 13 cutting process: The paper material 13 is passed between the cutting roller 2 and the negative pressure adsorption roller 3, and output to the folding roller 4 after passing around the negative pressure adsorption roller 3. The negative pressure adsorption roller 3 is driven by the drive motor 12 to rotate along its own central axis. The negative pressure adsorption roller 3 adsorbs the paper material 13 by negative pressure and drives the paper material 13 to move. Under the negative pressure adsorption of the negative pressure adsorption roller 3, even if the paper material 13 is cut, the paper material 13 is still adsorbed on the negative pressure adsorption roller 3, thereby realizing the traction action of the paper material 13. The cutting roller 2 is driven by the drive motor 12 to rotate along its own central axis. When the first cutting blade 8 set on the cutting roller 2 rotates to the position tangent to the negative pressure adsorption roller 3, the first cutting blade 8 can contact the paper material 13 and cut the paper material 13, thereby forming the cutting action of the paper material 13.

[0028] Based on the above "paper material 13 cutting process", when the speed of the negative pressure adsorption roller 3 is increased by the drive motor 12 while the speed of the cutting roller 2 remains unchanged, the length of the paper material 13 pulled by the negative pressure adsorption roller 3 per unit time will increase. Since the time interval between the first cutting blade 8 on the cutting roller 2 and the negative pressure adsorption roller 3 is unchanged, the cutting length of each section of the paper material 13 can be increased.

[0029] The above-mentioned method achieves the function of adjusting the cutting length of paper material 13 by "increasing the speed of the negative pressure adsorption roller 3 and keeping the speed of the cutting roller 2 unchanged". Based on this idea, it can also be set to keep the speed of the negative pressure adsorption roller 3 unchanged and reduce the speed of the cutting roller 2, thereby increasing the time interval between the first cutting blade 8 and the negative pressure adsorption roller 3. However, this method cannot reduce the speed of the cutting roller 2 indefinitely to avoid the contact time between the first cutting blade 8 and the paper material 13 on the negative pressure adsorption roller 3 being too long. The contact time between the first cutting blade 8 and the paper material 13 on the negative pressure adsorption roller 3 should be controlled within 0.5s.

[0030] Example 2

[0031] Based on Embodiment 1, when cutting shorter paper material 13 by changing the rotation speed of the negative pressure adsorption roller 3 while keeping the rotation speed of the cutting roller 2 constant, it is necessary to significantly reduce the rotation speed of the negative pressure adsorption roller 3. This is very detrimental to improving production efficiency. Therefore, referring to... Figure 2 The first cutting blade 8 is arranged in multiple sets around the circumference of the cutting roller 2.

[0032] Working principle:

[0033] When multiple sets of the first cutting blade 8 are arranged around the circumference of the cutting roller 2, the interval between the first cutting blade 8 and the negative pressure adsorption roller 3 will be shorter when the cutting roller 2 rotates at the same speed. When cutting shorter paper materials 13, it is not necessary to significantly increase the speed of the negative pressure adsorption roller 3, so that the cutting requirements of shorter paper materials 13 can be met.

[0034] Example 3

[0035] The first cutting blade 8 comes into contact with and vibrates against the paper material 13 during the cutting action. After long-term operation, the first cutting blade 8 may loosen. When the first cutting blade 8 loosens, it will rigidly contact the negative pressure suction roller 3, causing a serious accident. To improve the stability of the first cutting blade 8, refer to... Figure 3 The outer surface of the cutting roller 2 has a first groove 6, and a blade holder 7 is fixedly installed inside the first groove 6 by screws. The blade holder 7 is snapped with a first cutting blade 8; see reference. Figure 3 Multiple sets of fastening bolts 9 are located on the upper and lower sides of the tool holder 7, and the fastening bolts 9 can be connected to the inner wall thread of the first slot 6.

[0036] Working principle:

[0037] The first cutting blade 8 is installed inside the first slot 6 via the blade holder 7. The first slot 6 is opened on the outer surface of the cutting roller 2, so that the bottom of the first cutting blade 8 can be located inside the cutting roller 2, thereby improving stability. In order to prevent the blade holder 7 from moving the first cutting blade 8 due to the loosening of the fixing screws of the blade holder 7, multiple sets of fastening bolts 9 are also abutted on the upper and lower sides of the blade holder 7. The blade holder 7 is further fixed by the bidirectional abutment of multiple sets of fastening bolts 9, avoiding the failure of a single fixing method that would cause the blade holder 7 to loosen.

[0038] Example 4

[0039] To improve the cutting effect on paper material 13, refer to Figure 4 The outer surface of the negative pressure adsorption roller 3 is provided with a second groove 10, and a second cutting blade 11 is installed inside the second groove 10. The first cutting blade 8 can fit with the second cutting blade 11.

[0040] Working principle:

[0041] When the tips of the first cutting blade 8 and the second cutting blade 11 are engaged, they can simultaneously cut the upper and lower sides of the paper material 13 and cut the paper material 13, thereby improving the cutting effect of the paper material 13.

[0042] When the cutting roller 2 and the negative pressure adsorption roller 3 are respectively equipped with a set of first cutting blades 8 and a set of second cutting blades 11, and the circumferences of the cutting roller 2 and the negative pressure adsorption roller 3 are equal, if it is necessary to change the cutting length of the paper material 13, the rotation speed of the cutting roller 2 or the negative pressure adsorption roller 3 needs to be adjusted according to the number of first cutting blades 8 or second cutting blades 11 by a multiple, so that the first cutting blades 8 and second cutting blades 11 can fit together and avoid misalignment of the first cutting blades 8 and second cutting blades 11.

[0043] Example 5

[0044] Based on Embodiment 4, when the cutting roller 2 and the negative pressure adsorption roller 3 are respectively equipped with a set of first cutting blades 8 and a set of second cutting blades 11, if it is necessary to change the cutting length of the paper material 13, the rotation speed of the cutting roller 2 or the negative pressure adsorption roller 3 needs to be increased by an integer multiple, which limits the adjustment range of cutting. (Refer to...) Figure 4 Multiple sets of second slots 10 and second cutting blades 11 are arranged around the circumference of negative pressure adsorption roller 3.

[0045] Working principle:

[0046] By increasing the number of second cutting blades 11 on the negative pressure adsorption roller 3, the magnification required for the second cutting blade 11 to align with the first cutting blade 8 can be reduced, thereby increasing the cutting adjustment range.

[0047] Example 6

[0048] Reference Figure 2 The cutting roller 2 and the negative pressure adsorption roller 3 are configured in two sets.

[0049] Working principle:

[0050] Reference Figure 2 By combining the cutting roller 2 with the negative pressure adsorption roller 3 in two sets, two sets of paper materials 13 can be cut simultaneously, and the paper materials 13 are stacked end to end to form a continuous paper extraction structure.

[0051] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A paper cutting device with adjustable cutting length, comprising a device frame (1), characterized in that: Also includes: The length adjustable cutting assembly includes a cutting roller (2) and a negative pressure adsorption roller (3). The cutting roller (2) and the negative pressure adsorption roller (3) are rotatably mounted in the equipment frame (1). The cutting roller (2) and the negative pressure adsorption roller (3) are each driven to rotate by a set of drive motors (12). The cutting roller (2) is equipped with a first cutting blade (8). The negative pressure adsorption roller (3) is used to pull paper material (13). The first cutting blade (8) can cut the paper material (13) located on the negative pressure adsorption roller (3).

2. The paper cutting device with adjustable cutting length according to claim 1, characterized in that: The first cutting blade (8) is arranged in multiple sets around the circumference of the cutting roller (2).

3. The paper cutting device with adjustable cutting length according to claim 2, characterized in that: The outer surface of the cutting roller (2) is provided with a first groove (6), and a knife holder (7) is fixedly installed inside the first groove (6) by screws. The first cutting knife (8) is snapped on the knife holder (7).

4. The paper cutting device with adjustable cutting length according to claim 3, characterized in that: Multiple sets of fastening bolts (9) are also located on the upper and lower sides of the tool holder (7), and the fastening bolts (9) can be threaded to the inner wall of the first slot (6).

5. The paper cutting device with adjustable cutting length according to claim 1, characterized in that: The outer surface of the negative pressure adsorption roller (3) is provided with a second groove (10), and a second cutting blade (11) is installed inside the second groove (10). The first cutting blade (8) can fit with the second cutting blade (11).

6. The paper cutting device with adjustable cutting length according to claim 5, characterized in that: The second slot (10) and the second cutting blade (11) are arranged in multiple sets around the circumference of the negative pressure adsorption roller (3).

7. The paper cutting device with adjustable cutting length according to claim 1, characterized in that: The cutting roller (2) and the negative pressure adsorption roller (3) are arranged in two sets.

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