Adjustable distance slitting cutter group device for paper roll production

Abstract

The utility model discloses a kind of adjustable interval's slitting cutter group device for roll paper production, it is related to roll paper slitting machine field, including device main body, the device main body includes slitting cutter group and collection box.The utility model is in real time by negative pressure fan and suction bin collection paper edge waste produced by slitting, waste is cut into pieces in combination with high-speed cutter in communicating pipe, effectively avoid waste accumulation or pipeline blockage, reduce the interference to slitting operation, cooperate with the metal protective net of the top of collection box to prevent corrugated pipe blockage, bottom universal wheel and side handle facilitate waste centralized cleaning, reduce manual labor intensity, negative pressure adsorption, cutting anti-blocking mechanism effectively improves the anti-failure capability of device, reduce the equipment downtime due to waste problem, comprehensively improve production efficiency, by simple bolt tightness operation can be quickly adjusted circular knife group spacing, can flexibly adapt to the slitting demand of different width roll paper, reduce the downtime when specification switching, improve production continuity.

Description

Technical Field

[0001] This utility model relates to the field of roll paper slitting machines, specifically a slitting knife assembly device with adjustable spacing for roll paper production. Background Technology

[0002] As an indispensable hygiene product in daily life, toilet paper's market demand continues to expand with population growth and improved living standards. This drives the toilet paper production industry towards high efficiency and large scale. To meet the needs of different usage scenarios, toilet paper specifications include different widths, lengths, and roll diameters. This places higher demands on the slitting process in toilet paper production, requiring production equipment to have the ability to flexibly adjust slitting parameters to adapt to the production needs of multiple specifications of toilet paper.

[0003] In the paper roll production process, the slitting and rewinding machine is one of the key pieces of equipment. Its main function is to slit the bulk paper produced by the paper machine into rolls of a set width and then rewind them into smaller rolls that meet market demands. Existing paper roll slitting and rewinding machines generally consist of an unwinding mechanism, a slitting knife assembly, a rewinding mechanism, and a transmission system. The unwinding mechanism is responsible for releasing the bulk paper roll stably. The slitting knife assembly cuts the bulk paper roll into multiple narrow rolls along the axial direction through the high-speed rotation of the blades. Subsequently, the rewinding mechanism rewinds the cut narrow rolls into neat small rolls. The entire process must ensure slitting accuracy and rewinding quality to ensure that the final product meets the standards.

[0004] However, the existing slitting blade assembly of the roll paper slitting and rewinding machine has certain shortcomings in actual use. On the one hand, the spacing adjustment method of some slitting blade assemblies is relatively cumbersome, making it difficult to quickly and accurately adapt to the slitting needs of roll paper of different widths, thus affecting production efficiency. On the other hand, a large amount of paper edge waste is generated during the slitting process. This waste usually accumulates around the equipment or under the slitting blade assembly. Existing equipment mostly adopts manual periodic cleaning or simple scraper collection methods, which not only increases the labor intensity, but also easily affects the normal operation of the slitting blade assembly due to waste accumulation, and may even lead to a decline in slitting quality. It may also cause pollution to the workshop environment. Therefore, an adjustable spacing slitting blade assembly device for roll paper production is proposed. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide an adjustable spacing slitting knife assembly device for roll paper production, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an adjustable spacing slitting knife assembly device for paper roll production, comprising a device body, the device body comprising a slitting knife assembly and a collection box, wherein the slitting knife assembly is slidably mounted on the top roller of the device body and includes multiple sets of circular knives, and bolts are fixedly mounted on the side of the circular knives for fixing the circular knives; A suction bin is fixedly installed at the bottom of the main body of the device, and a connecting pipe is fixedly installed at one end of the suction bin. A high-speed cutter is rotatably installed inside the connecting pipe to cut long waste materials. A fan is fixedly installed on the side of the main body of the device to maintain the negative pressure state of the suction bin, and a corrugated pipe is fixedly connected to one end of the fan to connect to the collection box.

[0007] By adopting the above technical solution, each set of circular blades is connected to the roller shaft by bolts fixed on the side. When it is necessary to adjust the cutting width, simply loosen the bolts, push the circular blade to slide along the roller shaft axis to the target position, and then tighten the bolts to complete the fixation. The operation is convenient and the positioning is stable. During operation, the fan starts to generate negative pressure, so that a stable air pressure difference is formed inside the suction bin. The paper edge waste generated by cutting is sucked into the suction bin under the action of negative pressure, and then cut by the high-speed cutter through the connecting pipe and enters the collection box for collection.

[0008] Furthermore, the side of the collection box is provided with a through hole corresponding to the connecting pipe, and the top surface of the collection box is provided with a through hole corresponding to the corrugated pipe.

[0009] By adopting the above technical solution, the through hole connection surface is sealed with a sealing ring, which not only ensures the stability when connected to the connecting pipe and the corrugated pipe, but also prevents the negative pressure from leaking at the connection, ensuring that the negative pressure generated by the suction bin can act efficiently on the waste material conveying.

[0010] Furthermore, a metal protective net is fixedly installed on the top of the collection box to intercept waste, the corrugated pipe opening is located above the metal protective net, and the through hole on the side of the collection box is located below the metal protective net.

[0011] By adopting the above technical solution, when the waste in the collection box is disturbed by negative pressure airflow or the accumulation height is close to the top surface, it can effectively intercept the fine waste that may be sucked into the bellows, avoid the waste entering the bellows and causing pipe blockage or fan impeller wear, and at the same time, it does not affect the air passage to maintain negative pressure circulation.

[0012] Furthermore, the high-speed cutter includes multiple sets of serrated blades rotating in opposite directions, and is driven to rotate by a motor.

[0013] By adopting the above technical solution, the counter-rotating design can instantly tear and cut the long strip of waste entering the connecting pipe through the reverse force of the blades, avoiding the waste from entanglement or slippage due to unidirectional rotational force, thus ensuring the smooth collection of subsequent waste.

[0014] Furthermore, the bottom of the collection box is fixedly equipped with casters, and a handle is provided on the side.

[0015] By adopting the above technical solution, when the waste in the collection box accumulates to the preset capacity, the operator does not need to bend over to move it. He only needs to hold the handle and push the box, so that the collection box can be easily moved on the workshop floor, which makes it easier to transfer the waste to the designated recycling point for centralized processing.

[0016] Furthermore, the inlet end of the suction bin is located below the slitting blade assembly, and the upper edge of the suction bin opening is designed to open in a funnel shape.

[0017] By adopting the above technical solution, the paper edge waste generated by the slitting blade assembly when cutting the paper roll can fall directly to the inlet end of the suction bin under the action of gravity, reducing the possibility of waste overflowing to other parts of the main body of the device.

[0018] In summary, the present invention has the following main advantages: This invention uses a negative pressure fan and suction bin to collect paper scraps generated during slitting in real time. Combined with a high-speed cutter inside the connecting pipe, the scraps are shredded, effectively preventing scrap accumulation or pipe blockage and reducing interference with the slitting operation. A metal protective mesh on top of the collection box prevents corrugated pipe blockage, while casters and side handles facilitate centralized scrap collection, reducing manual labor intensity and maintaining a clean production environment. The negative pressure adsorption and shredding / anti-blocking mechanisms effectively enhance the device's resilience, reducing downtime due to scrap issues, extending continuous operation time, and comprehensively improving production efficiency. The spacing between the circular blades can be quickly adjusted with simple bolt tightening and loosening, eliminating the need for complex procedures. It can flexibly adapt to the slitting needs of different widths of paper rolls, reducing downtime during specification changes and improving production continuity. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the entire utility model; Figure 2 This is a three-dimensional structural diagram of the present invention after partial cross-section; Figure 3 This is a three-dimensional structural diagram of the waste treatment mechanism of this utility model; Figure 4 This is an exploded view of the waste treatment mechanism of this utility model.

[0020] In the diagram: 1. Main body of the device; 11. Circular blade; 2. Suction bin; 21. Connecting pipe; 22. High-speed cutter; 3. Collection box; 31. Metal protective mesh; 32. Through hole; 4. Fan; 41. Corrugated pipe. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] The embodiments of this utility model will be described below based on its overall structure.

[0023] Example 1 An adjustable-gap slitting knife assembly for roll paper production, such as... Figure 1-4 As shown, the device includes a main body 1, which comprises a slitting blade assembly and a collection box 3. The slitting blade assembly is slidably mounted on a roller shaft at the top of the main body 1, allowing the circular blades 11 to slide on the roller shaft, thus facilitating the adjustment of the spacing between the circular blades 11. The device includes multiple sets of circular blades 11, and bolts are fixedly mounted on the sides of each circular blade 11 for securing them. Each set of circular blades 11 is connected to the roller shaft via bolts fixedly mounted on the sides. When the slitting width needs to be adjusted, simply loosen the bolts, push the circular blades 11 to slide axially along the roller shaft to the target position, and then tighten the bolts to complete the fixing. The operation is convenient and the positioning is stable. A suction bin 2 is fixedly installed below the main body 1 of the device, and a connecting pipe 21 is fixedly installed at one end of the suction bin 2. The connecting pipe 21 is connected to the inside of the suction bin 2. The pipe diameter is designed according to the amount of waste discharged during the production process to ensure that the waste can pass through smoothly. A high-speed cutter 22 is rotatably installed inside the connecting pipe 21 to cut long waste materials. The high-speed cutter 22 is driven by a drive motor to rotate the blade, which can cut the long strips of waste materials passing through the connecting pipe 21 in a timely manner, effectively preventing waste materials from entangled and blocking the pipe. A connecting pipe 22 is fixedly installed on the side of the main body 1. There is a blower 4, which is used to maintain the negative pressure state of the suction bin 2. One end of the blower 4 is fixedly connected to a corrugated pipe 41, which is used to connect to the collection box 3. The corrugated pipe 41 has good flexibility and can adapt to slight vibrations during the operation of the device. At the same time, it is convenient to move and adjust the position of the collection box 3. When working, the blower 4 starts to generate negative pressure, so that a stable air pressure difference is formed inside the suction bin 2. The paper edge waste generated by cutting is sucked into the suction bin 2 under the action of negative pressure. Then, it is cut by the high-speed cutter 22 through the connecting pipe 21 and enters the collection box 3 to complete the collection.

[0024] Please see Figure 1-4The side of the collection box 3 is provided with a through hole 32 corresponding to the connecting pipe 21, so that the through hole 32 on the side of the collection box 3 is compatible with the pipe diameter of the connecting pipe 21. The top surface of the collection box 3 is provided with a through hole 32 corresponding to the corrugated pipe 41, so that the through hole 32 on the top surface of the collection box 3 is compatible with the pipe diameter of the corrugated pipe 41. The end of the corrugated pipe 41 away from the blower 4 passes through the through hole 32 and extends into the interior of the collection box 3. The connection surface of the through hole 32 is sealed with a sealing ring, which not only ensures the stability when connected with the connecting pipe 21 and the corrugated pipe 41, but also prevents the negative pressure from leaking at the connection, ensuring that the negative pressure generated by the suction bin 2 can act efficiently on the waste material conveying.

[0025] Please see Figure 1-4 A metal protective net 31 is fixedly installed on the top of the collection box 3 to intercept waste. The coverage area of ​​the metal protective net 31 corresponds to the area directly below the top through hole 32. Its core function is to form a physical barrier. The inlet of the corrugated pipe 41 is located above the metal protective net 31. When the waste in the collection box 3 is disturbed by negative pressure airflow or the accumulation height is close to the top surface, it can effectively intercept the fine waste that may be sucked into the corrugated pipe 41, preventing the waste from entering the corrugated pipe 41 and causing pipe blockage or impeller wear. At the same time, it does not affect the air passage to maintain negative pressure circulation. The through hole 32 on the side of the collection box 3 is located below the metal protective net 31, thereby ensuring that the shredded waste entering through the connecting pipe 21 falls directly into the collection space below the metal protective net 31, forming a physical separation from the airflow channel above the metal protective net 31.

[0026] Please see Figure 1-4 The high-speed cutter 22 includes multiple sets of counter-rotating serrated blades. The blade diameter is adapted to the inner diameter of the connecting tube 21, typically 80%-90% of the inner diameter of the connecting tube 21. The serrated cutting edge is made of high-strength alloy material and is sharpened to ensure the shearing ability of paper waste. The counter-rotating design can instantly tear and cut the long strips of waste entering the connecting tube 21 through the reverse force of the blades, avoiding the waste from entanglement or slippage due to unidirectional rotation force, thus ensuring the smooth collection of subsequent waste. It is driven by a motor to rotate.

[0027] Please see Figure 1-4 The bottom of the collection box 3 is fixedly equipped with casters and a handle is provided on the side. When the waste in the collection box 3 accumulates to the preset capacity, the operator does not need to bend over to move it. He only needs to hold the handle and push the box, so that the collection box 3 can be easily moved on the workshop floor, which facilitates the transfer of waste to the designated recycling point for centralized processing.

[0028] Please see Figure 1-4The inlet end of the suction bin 2 is located below the slitting blade assembly, so that the paper edge waste generated by the slitting blade assembly when cutting the paper roll can fall directly to the inlet end of the suction bin 2 under the action of gravity, reducing the possibility of waste overflowing to other parts of the main body 1. In addition, the upper edge of the opening end of the suction bin 2 is designed to open in a trumpet shape, which makes the receiving range of the inlet end relatively larger. Even if the waste falls slightly off-center due to paper vibration or tension fluctuation during the slitting process, it can still be effectively collected.

[0029] The working principle of this utility model is as follows: When the main body 1 of the device is in operation, the large roll of raw paper is stably conveyed by the unwinding mechanism. Then, the circular knife 11 cuts the raw paper into narrow strips of a set width. Finally, the rewinding mechanism rewinds the cut narrow strips into qualified small rolls, thus completing the processing of the roll paper. When it is necessary to adjust the spacing of the circular knife 11, simply loosen the bolts on the side of the circular knife 11, push the knife to the target position, and finally tighten the bolts to fix it. This allows for the rapid adjustment of the spacing of the knife group, meeting the cutting requirements of roll paper of different widths. When the raw paper is slit, the waste paper generated by slit falls onto the bottom plate of the main body 1 of the device due to gravity. At this time, the fan 4 continues to run, which creates a stable negative pressure in the suction bin 2. After the waste falls, it is sucked into the suction bin 2 in time. When the waste passes through the connecting pipe 21 with the airflow, the high-speed cutter 22 in the pipe instantly cuts the long strip of waste into small pieces, effectively preventing the waste from tangling and causing the pipe to be blocked. The shredded waste continues to move along the connecting pipe 21 and finally falls into the collection box 3 to complete the collection. The structural design of the collection box 3 further ensures the stability of waste treatment. The opening of the corrugated pipe 41 is higher than the metal protective net 31 at the top, which can maintain negative pressure suction and intercept waste to prevent it from clogging the corrugated pipe 41. In addition, the universal wheels at the bottom of the collection box 3 and the handles on the side work together to make the collection box 3 easy to move when there is a lot of waste, which makes it convenient for operators to carry out centralized cleaning and ensures continuous and efficient operation of the device.

[0030] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A slitting knife assembly device with adjustable spacing for roll paper production, comprising a main body (1), characterized in that: The main body (1) of the device includes a slitting blade assembly and a collection box (3). The slitting blade assembly is slidably mounted on the top roller of the main body (1) of the device and includes multiple sets of circular blades (11). Bolts are fixedly mounted on the side of the circular blades (11) for fixing the circular blades (11). The device body (1) is fixedly installed with a suction bin (2) below it, and a connecting pipe (21) is fixedly installed at one end of the suction bin (2). A high-speed cutter (22) is rotatably installed inside the connecting pipe (21) for cutting long waste materials. A fan (4) is fixedly installed on the side of the device body (1) for maintaining the negative pressure state of the suction bin (2). A corrugated pipe (41) is fixedly connected at one end of the fan (4) for connecting the collection box (3).

2. The adjustable-gap slitting blade assembly device for roll paper production according to claim 1, characterized in that: The collection box (3) has a through hole (32) on its side corresponding to the connecting pipe (21), and the collection box (3) has a through hole (32) on its top surface corresponding to the corrugated pipe (41).

3. The adjustable-gap slitting blade assembly device for roll paper production according to claim 2, characterized in that: The top of the collection box (3) is fixedly installed with a metal protective net (31) for intercepting waste. The opening of the corrugated pipe (41) is located above the metal protective net (31), and the through hole (32) on the side of the collection box (3) is located below the metal protective net (31).

4. The adjustable-gap slitting blade assembly device for roll paper production according to claim 1, characterized in that: The high-speed cutter (22) includes multiple sets of serrated blades that rotate in opposite directions and are driven by a motor.

5. The adjustable-gap slitting blade assembly device for roll paper production according to claim 1, characterized in that: The bottom of the collection box (3) is fixedly equipped with casters, and a handle is provided on the side.

6. The adjustable-gap slitting blade assembly device for roll paper production according to claim 1, characterized in that: The inlet end of the suction bin (2) is located below the slitting blade assembly, and the upper edge of the opening end of the suction bin (2) is designed to open in a trumpet shape.

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