Mechanical longitudinal cutting device

Abstract

The utility model discloses a mechanical longitudinal cutting device which comprises a cutting blade and a dead knife, a protective cover is arranged on the cutting blade, and a lubricating device used for cooling and lubricating the cutting blade is arranged on the protective cover. The lubricating device comprises a shell, the two ends of the shell are open, oil cotton for lubricating the cutter is arranged in the shell, and an open groove allowing the cutting blade to rotate to make contact with the oil cotton is formed in the side wall of the end, close to the cutting blade, of the shell. The cutting blade rotates to pass through the open groove to be in contact with the oil cotton, the height of the open groove is slightly larger than the thickness of the cutter to ensure that the cutting blade can smoothly pass through the open groove to ensure normal operation of the cutter, the proper length is set to ensure the contact area of the cutting blade and the oil cotton, and it is ensured that the oil cotton plays an effective lubricating role on the cutter. And the blade is prevented from being blunt due to friction, so that the paper cutting flatness and cutting precision are improved. And meanwhile, the service life of the cutting blade is prolonged, the replacement frequency of the cutter and the equipment loss are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a rewinding paper cutting tool, and more particularly to a mechanical longitudinal cutting device. Background Technology

[0002] Based on cutting methods and application areas, slitting and rewinding equipment is mainly divided into two categories: mechanical slitting devices and laser slitting and rewinding equipment. They are commonly used for cutting various materials such as paper, plastic film, and metal foil. Laser slitting and rewinding equipment, with its high precision and non-contact cutting characteristics, plays an important role in processing materials requiring high cutting accuracy. Mechanical slitting devices, on the other hand, use blades or saw blades for cutting, making them suitable for the rapid and efficient processing of most materials. In the final stage of tissue paper production, mechanical slitting devices are typically used to cut long rewound paper rolls into different sizes and specifications, requiring high flatness and cutting accuracy of the cut paper. Because mechanical slitting devices use blades or saw blades for contact cutting, with the blades or saw blades engaging with the bottom blade for cutting, the blades or saw blades heat up over time, leading to accelerated wear. As the blades or saw blades become dull, the flatness and cutting accuracy of the paper deteriorate, affecting the slitting effect. Simultaneously, it shortens the lifespan of the blades or saw blades, requiring frequent replacements, which impacts production line efficiency and equipment wear. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to provide a mechanical longitudinal cutting device to improve the flatness and accuracy of rewinding paper cutting and to increase the service life of the blade.

[0004] Technical solution: The mechanical longitudinal cutting device of this utility model includes a cutting blade and a bottom blade. The cutting blade is provided with a protective cover, and the protective cover is provided with a lubrication device for cooling and lubricating the cutting blade.

[0005] Furthermore, the lubrication device includes a housing with openings at both ends and an inner layer of oil-soaked cotton for lubricating the cutting tool. A groove is formed on the side wall of the housing near the cutting blade to allow the cutting blade to rotate and contact the oil-soaked cotton. In use, the cutting blade rotates through the groove and contacts the oil-soaked cotton, cooling and lubricating the cutting blade and preventing wear caused by prolonged operation.

[0006] Furthermore, the groove height is 1-2 mm greater than the blade thickness, and the length is 1 / 3 to 1 / 2 of the cutting blade radius. The groove height is slightly greater than the blade thickness to ensure the cutting blade can pass smoothly through the groove and operate normally. The appropriate length ensures sufficient contact area between the cutting blade and the oiled cotton, ensuring the oiled cotton effectively lubricates the cutting blade and prevents it from becoming dull due to friction, thereby improving the flatness and cutting accuracy of the paper. This also extends the service life of the cutting blade, reduces the frequency of blade replacement and equipment wear, and thus improves production efficiency.

[0007] Furthermore, bolts can be used to secure the housing and the oil-soaked cotton; alternatively, the housing can be configured as a variable-diameter shell, with the diameter gradually decreasing from the outside towards the end near the cutting blade. Both methods can effectively secure the oil-soaked cotton, preventing the moving cutting blade from contacting it and causing the cotton to shift or fall off, thus ensuring long-term and effective lubrication and cooling of the cutting tool.

[0008] Furthermore, the oil-soaked cotton soaked in edible-grade white oil does not cause color pollution or harmful substance pollution to the paper products. In particular, it does not introduce toxic or harmful substances into household paper products, thus ensuring the safety of the finished paper products.

[0009] Furthermore, a dust cover is provided at the end of the housing away from the cutting blade to prevent cutting debris or foreign objects from entering the housing and mixing into the oil cotton, which could damage the cutting blade. At the same time, it can reduce the evaporation rate of white oil on the oil cotton, ensuring the lubrication effect of the lubrication device and reducing the replacement frequency.

[0010] Furthermore, a hole is made on the side of the protective cover opposite the cutting blade. The lubrication device is fixed in the hole by double-threaded bolts, ensuring that the center of the groove of the lubrication device is on the same plane as the cutting blade, allowing the blade to operate normally. Two double-threaded bolts are provided, one at the top and one at the bottom, to fix the oil cotton. The position of the lubrication device on the protective cover can be adjusted by adjusting the two double-threaded bolts, further ensuring that the oil cotton and the cutting blade are in full contact.

[0011] Beneficial effects: Compared with the prior art, this utility model has the following advantages: 1. The lubrication device prevents the blade from becoming dull due to friction, improving the flatness and cutting accuracy of paper cutting; 2. The lubricating oil reduces the frictional wear of the blade and improves the service life of the blade; 3. The lubrication device is set with a suitable slot size and the position of the lubrication device is adjusted by double threaded bolts to ensure the contact area between the cutting blade and the oil cotton, thereby ensuring the lubrication and cooling effect; 4. It reduces the frequency of blade replacement, improves the production efficiency of the production line, and reduces equipment wear. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a side view of the structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the lubrication device of this utility model. Detailed Implementation

[0015] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0016] Example 1

[0017] like Figures 1 to 3 The mechanical longitudinal cutting device shown includes a cutting blade 1 and a bottom blade 2. The cutting blade 1 engages with the bottom blade 2 to cut. A protective cover 3 is provided on the cutting blade 1 to prevent debris from splashing. A lubrication device 4 for cooling and lubricating the cutting blade 1 is provided on the protective cover 3. An opening is made on the side of the protective cover 3 opposite to the cutting blade 1, and the lubrication device 4 is fixed in the opening by bolts. The lubrication device 4 includes a housing 5, which can be circular, square, or other regular polygonal. It is open at both ends and contains an oil cotton 6, which is impregnated with food-grade white oil. The two side walls of the housing 5 near the cutting blade 1 have grooves 7. When the cutting blade 1 rotates, it passes through the grooves 7 and contacts the oil cotton 6 to cool and lubricate it, preventing severe wear caused by prolonged operation of the cutting blade 1. The groove 7 has a height of 3mm, slightly larger than the thickness of the cutting blade 1, to facilitate its passage. Its length of 30mm ensures sufficient contact area between the cutting blade 1 and the oil cotton 6 for effective cooling and lubrication, thus ensuring the lubrication effect of the lubrication device 4 on the cutting blade 1. (To ensure lubrication and accommodate cutting blades of different thicknesses, the height of the groove 7 is 1-2mm greater than the thickness of the cutting blade 1, and the length is 1 / 3 to 1 / 2 of the radius of the cutting blade 1). The other end of the housing 5 is equipped with a dust cover 9 to prevent cutting debris or foreign objects from entering the housing 5 and mixing into the oil cotton 6, causing damage to the cutting blade 1. It also reduces the evaporation rate of the white oil on the oil cotton 6, ensuring the lubrication effect of the lubrication device and reducing the frequency of oil cotton 6 replacement. Two double-threaded bolts 8 penetrate the housing 5 and the oil cotton 6, fixing the oil cotton 6 inside the housing. This prevents the oil cotton 6 from easily moving or falling off due to the rotation of the cutting blade 1, which would prevent long-term and effective protection against wear of the cutting blade 1. Simultaneously, adjusting the position of the lubrication device 4 on the protective cover 3 by adjusting the double-threaded bolts 8 further ensures sufficient contact between the oil cotton 6 and the cutting blade 1, guaranteeing lubrication and cooling effects.

[0018] Example 2

[0019] Unlike Embodiment 1, the housing 5 features a variable-diameter outer shell, with its diameter gradually decreasing from the outside towards the end near the cutting blade 1. This gradually decreasing diameter of the housing 5 secures the oil-soaked cotton 6, preventing it from easily moving or even falling off due to the rotation of the cutting blade 1. This ensures long-term and effective lubrication and cooling of the cutting blade 1, preventing wear. By using the gradually decreasing diameter of the housing 5 to secure the oil-soaked cotton instead of bolts, damage to the cutting tool can be prevented from bolt wear and the introduction of metal foreign matter into the oil-soaked cotton.

Claims

1. A mechanical longitudinal cutting device, comprising a cutting blade (1) and a bottom blade (2), wherein the cutting blade (1) is provided with a protective cover (3); characterized in that, The protective cover (3) is provided with a lubrication device (4) for cooling and lubricating the cutting blade (1).

2. The mechanical longitudinal cutting device according to claim 1, characterized in that, The lubrication device (4) includes a housing (5), which has openings at both ends and contains oil cotton (6) for lubricating the cutting tool. The housing (5) has a slot (7) on the side wall near the cutting blade (1) to accommodate the cutting blade (1) as it rotates through contact with the oil cotton (6).

3. The mechanical longitudinal cutting device according to claim 2, characterized in that, The height of the groove (7) is 1-2 mm greater than the blade thickness and the length is 1 / 3 to 1 / 2 of the radius of the cutting blade (1).

4. The mechanical longitudinal cutting device according to claim 2, characterized in that, A double-threaded bolt (8) passes through the housing (5) and the oiled cotton (6) to secure it.

5. The mechanical longitudinal cutting device according to claim 2, characterized in that, The housing (5) is configured as a variable diameter outer shell for securing the cotton wool (6), and the diameter of the housing (5) gradually decreases from the outside to the end near the cutting blade (1).

6. The mechanical slitting device according to claim 4 or 5, characterized in that, The oiled cotton (6) is soaked in edible white oil.

7. The mechanical longitudinal cutting device according to claim 2, characterized in that, A dust cover (9) is provided at the end of the housing (5) away from the cutting blade (1).

8. The mechanical longitudinal cutting device according to claim 1, characterized in that, The protective cover (3) has a hole on its side opposite to the cutting blade (1), and the lubrication device (4) is fixed in the hole by bolts.

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