Abrasion-resistant sand roll slitting circular blade mechanism

Abstract

The utility model relates to cutting equipment technical field, concretely is a kind of wear-resistant sand roll slitting round blade mechanism, including upper cutter shaft and lower cutter shaft, upper cutter shaft and lower cutter shaft are all sleeved with several electroplated diamond round blade, and the electroplated diamond round blade between adjacent is fixed by spacer bushing and is pressed tightly, the both ends of upper cutter shaft and lower cutter shaft are equipped with cutter shaft base by bearing, and one end of lower cutter shaft is equipped with transmission sprocket, and the surface of electroplated diamond round blade is electroplated with diamond micropowder layer.The wear-resistant sand roll slitting round blade mechanism, the core advantage lies in that the wear resistance and slitting stability of blade are significantly improved.The diamond micropowder layer is electroplated on the cutting edge and working surface of round blade, by means of the superhardness characteristics of diamond, effectively resist the high-frequency friction of sand roll abrasive particles, fundamentally solve the problem of easy passivation and quick wear of traditional blade, greatly prolong the service life of blade.

Description

Technical Field

[0001] This utility model relates to the field of cutting equipment technology, and more specifically, to a wear-resistant abrasive roll slitting circular blade mechanism. Background Technology

[0002] Coated abrasives, as key consumables in industrial processing, are widely used in metal grinding, surface polishing, and many other applications. The production of disc-shaped abrasives such as abrasive discs and louvers requires continuous abrasive rolls as raw materials, involving multiple processes including slitting, arranging, and bonding. In the abrasive roll processing flow, the slitting process is the core step determining the dimensional accuracy of the final product. It typically relies on upper and lower opposing circular blades in a fine-blade slitting machine to cut wide abrasive rolls into narrow strips of abrasive cloth that meet production requirements through extrusion and shearing.

[0003] However, existing slitting processes suffer from significant technical challenges: during high-speed pulling of the abrasive coil, the abrasive particles on its surface generate intense friction with the cutting edge and working surface of the circular blade. Traditional circular blades, mostly made of ordinary steel or conventional cemented carbide, have limited wear resistance and are prone to edge dulling and surface wear under prolonged high-load friction. This not only leads to deviations in the slitting width of the abrasive coil, making it difficult to meet process standards in terms of product dimensional accuracy, but also necessitates frequent replacement of the entire circular blade, increasing equipment maintenance costs and causing frequent production line downtime, severely hindering the improvement of production efficiency. Furthermore, the uneven wear of the blades further exacerbates the instability of slitting quality, affecting the processing effect of subsequent processes and placing additional quality control pressure on enterprises. Therefore, developing a circular blade mechanism for abrasive coil slitting with high wear resistance has become an urgent need to solve the current industry dilemma. Utility Model Content

[0004] The purpose of this utility model is to provide a wear-resistant abrasive roll slitting circular blade mechanism to solve the significant technical pain point of the existing slitting process mentioned in the background art: during the high-speed pulling process of the abrasive roll, the abrasive particles on its surface will generate severe friction with the cutting edge and working surface of the circular blade.

[0005] To achieve the above objectives, this utility model provides a wear-resistant abrasive roll slitting circular blade mechanism, including an upper blade shaft and a lower blade shaft. A plurality of electroplated diamond circular blades are fitted onto both the upper and lower blade shafts. Adjacent electroplated diamond circular blades are abutted and fixed together by spacers. Blade shaft bases are mounted at both ends of the upper and lower blade shafts via bearings. A transmission sprocket is mounted at one end of the lower blade shaft. The surface of the electroplated diamond circular blades is electroplated with a diamond micro-powder layer, which at least covers the cutting edge of the electroplated diamond circular blades and the working surface in contact with the abrasive roll.

[0006] This setup employs an opposing upper and lower cutter shaft layout. A layer of diamond micro-powder is applied to the cutting edge and working surface of the circular blades through an electroplating process, utilizing the ultra-high hardness of diamond to resist the friction of the abrasive roll. Spacers ensure precise positioning and clamping of the blades, preventing blade displacement during slitting. The cutter shaft base supports the cutter shafts via bearings, reducing rotational resistance. The drive sprocket serves as the power transmission interface, providing stable driving force to the lower cutter shaft.

[0007] Preferably, the electroplated diamond circular blades are arranged at equal intervals.

[0008] This setup, through precise dimensional control of standardized spacers, ensures that the electroplated diamond circular blades on the upper and lower cutter shafts maintain a uniform spacing, guaranteeing consistent spacing at each shearing station and meeting the dimensional accuracy requirements for abrasive roll slitting.

[0009] Preferably, a number of pads are provided between the bases of the upper and lower cutter shafts, and the pads are stacked from top to bottom in a multi-layer plate structure.

[0010] This feature allows for flexible adjustment of the vertical spacing between the upper and lower cutter shafts by increasing or decreasing the number of layers, thus adapting to the slitting needs of sand rolls of different thicknesses without requiring a change in the overall support structure.

[0011] Preferably, a keyway is provided at one end of the lower cutting shaft and on the inner side of the transmission sprocket, and the lower cutting shaft is connected to the transmission sprocket via a key.

[0012] This design utilizes a key and keyway mating structure to achieve a rigid connection between the lower cutter shaft and the transmission sprocket, ensuring that the torque of the power mechanism can be transmitted to the lower cutter shaft efficiently and without slippage, thus avoiding energy loss or phase deviation during power transmission.

[0013] Preferably, the outer diameter of the electroplated diamond circular cutting tool is 50-200mm, the thickness is 1-5mm, the electroplated diamond circular cutting tool is made of cemented carbide material, and the thickness of the diamond micro powder layer is 5-30μm.

[0014] This design uses cemented carbide as the blade substrate, balancing structural strength and basic wear resistance; it limits the reasonable range of blade outer diameter, thickness and diamond micro powder layer thickness, which not only meets the mechanical requirements in the slitting process, but also controls production costs while ensuring wear resistance by precisely controlling the thickness of the diamond micro powder layer.

[0015] Preferably, the electroplated diamond circular blades on the upper cutter shaft and the electroplated diamond circular blades on the lower cutter shaft are matched one-to-one to form a shearing structure.

[0016] This setting ensures that the blades of the upper and lower cutter shafts are precisely aligned, allowing their cutting edges to work together to cut the abrasive roll instantly as it passes through the cutter set, avoiding pulling or tearing caused by misalignment of the cutting edges.

[0017] Preferably, the lower cutter shaft is connected to a power mechanism via a transmission sprocket. The power mechanism drives the lower cutter shaft to rotate, and the large roll of abrasive cloth is fed between the upper and lower cutters of the upper and lower cutter shafts. The transmission sprocket applies power, and the cutting edges of the upper and lower cutters form a shearing action, dividing the large roll of abrasive cloth into abrasive cloth strips.

[0018] This configuration uses a transmission sprocket to receive the driving force of the power mechanism, which drives the lower cutter shaft to rotate. This shaft, in conjunction with the upper cutter shaft blades, generates shearing force. Through mechanized conveying and shearing coordination, batch cutting of abrasive cloth rolls into abrasive cloth strips is achieved.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] The core advantage of this wear-resistant abrasive roll slitting circular blade mechanism lies in its significantly improved wear resistance and slitting stability. By electroplating a layer of diamond micro-powder onto the cutting edge and working surface of the circular blade, the ultra-high hardness of diamond effectively resists the high-frequency friction of abrasive particles from the abrasive roll, fundamentally solving the problems of easy dulling and rapid wear of traditional blades, and greatly extending the service life of the blades. Simultaneously, the electroplated diamond circular blades adopt an evenly spaced arrangement design and achieve precise positioning through spacers. Combined with the one-to-one corresponding shearing structure of the upper and lower cutter shaft blades, this ensures the consistency of the abrasive roll slitting width, avoids dimensional deviations caused by blade wear, and guarantees the processing accuracy of the product.

[0021] The organization excels in both production efficiency and cost control. Improved blade wear resistance reduces the frequency of blade replacements, significantly shortening equipment downtime for maintenance. Simultaneously, the keyed connection design between the drive sprocket and the lower cutter shaft ensures efficient and stable power transmission. Combined with the sharp cutting edge of the diamond blades, it can accommodate higher slitting speeds, effectively improving overall production efficiency. Furthermore, extended blade life reduces spare parts procurement costs, and reduced equipment downtime losses and scrap rates further compress overall production costs, bringing significant economic benefits to the company.

[0022] The mechanism also features good adaptability and ease of adjustment. The multi-layer plate structure between the upper and lower cutter shaft bases allows for flexible adjustment of the cutter shaft spacing by adding or removing layers, meeting the slitting requirements of sand rolls of different thicknesses. The standardized spacer design facilitates quick adjustment of the blade spacing according to production tasks, improving the equipment's responsiveness to diverse processing needs and enhancing its versatility and practicality. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a front structural diagram of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the electroplated diamond circular cutting tool in this utility model;

[0026] The meanings of the labels in the diagram are as follows:

[0027] 1. Drive sprocket; 2. Cutter shaft base; 3. Spacer; 4. Electroplated diamond circular cutting tool; 5. Diamond micro powder layer; 6. Spacer block; 7. Upper cutter shaft; 8. Lower cutter shaft. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This utility model provides a wear-resistant abrasive roll slitting circular blade mechanism, such as... Figures 1-3 As shown, it includes an upper cutter shaft 6 and a lower cutter shaft 7. Several electroplated diamond circular cutters 4 are fitted on both the upper cutter shaft 6 and the lower cutter shaft 7. Adjacent electroplated diamond circular cutters 4 are abutted and fixed by spacers 3. The two ends of the upper cutter shaft 6 and the lower cutter shaft 7 are equipped with cutter shaft bases 2 through bearings. A transmission sprocket 1 is installed at one end of the lower cutter shaft 7. The surface of the electroplated diamond circular cutter 4 is electroplated with a diamond micro powder layer 41. The diamond micro powder layer 41 at least covers the cutting edge of the electroplated diamond circular cutter 4 and the working surface in contact with the abrasive roll. The system employs an opposing upper cutter shaft 6 and lower cutter shaft 7. A diamond micro-powder layer 41 is coated onto the cutting edge and working surface of the electroplated diamond circular blade 4 using an electroplating process. The ultra-high hardness of diamond resists friction from abrasive rollers. A spacer 3 ensures precise positioning and secure fixing of the electroplated diamond circular blade 4, preventing blade displacement during slitting. The cutter shaft base 2 supports the upper cutter shaft 6 and lower cutter shaft 7 via bearings, reducing rotational resistance. A transmission sprocket 1 serves as the power transmission interface, providing stable driving force to the lower cutter shaft 7. This design fundamentally solves the problem of insufficient wear resistance in traditional blades, significantly reducing the wear rate of the electroplated diamond circular blade 4. The blade is firmly fixed, and the upper and lower cutter shafts rotate smoothly, ensuring stability during the slitting process. A clear power transmission path provides fundamental support for efficient slitting and extends the overall service life of the equipment.

[0030] In this embodiment, the electroplated diamond circular blades 4 are arranged at equal intervals.

[0031] By precisely controlling the dimensions of the standardized spacer 3, the electroplated diamond circular blades 4 on the upper cutter shaft 6 and the lower cutter shaft 7 maintain a uniform spacing, ensuring consistent spacing at each shearing station and meeting the dimensional accuracy requirements for abrasive roll slitting. This effectively avoids abrasive strip width deviations caused by uneven spacing of the electroplated diamond circular blades 4, improving the dimensional consistency of slitting products; reducing the workload of subsequent quality screening processes; increasing the yield of qualified products; and ensuring the standardized implementation of the production process.

[0032] Specifically, several pads 5 are provided between the two ends of the upper cutter shaft 6 and the lower cutter shaft 7 cutter shaft base 2. The pads 5 are stacked from top to bottom by a multi-layer plate structure.

[0033] The pad 5 formed by stacking multiple layers of boards can flexibly adjust the vertical distance between the upper cutter shaft 6 and the lower cutter shaft 7 by increasing or decreasing the number of layers, adapting to the slitting requirements of abrasive rolls of different thicknesses without replacing the overall cutter shaft base 2 support structure. This enhances the equipment's adaptability to diverse production tasks, reduces equipment adjustment costs caused by changes in abrasive roll thickness, facilitates adjustment operations, shortens production changeover time, and improves the equipment's versatility and flexibility.

[0034] Furthermore, keyways are provided at one end of the lower cutting shaft 7 and on the inner side of the transmission sprocket 1, and the lower cutting shaft 7 is connected to the transmission sprocket 1 via a key for transmission.

[0035] By utilizing the key and keyway mating structure, a rigid connection is achieved between the lower cutter shaft 7 and the transmission sprocket 1, ensuring that the torque of the power mechanism can be efficiently and smoothly transmitted to the lower cutter shaft 7, avoiding energy loss or phase deviation during power transmission. Stable and reliable power transmission ensures the uniformity of the rotation speed of the lower cutter shaft 7, thereby ensuring the continuity of the slitting process; it also reduces wear on transmission components, lowers equipment maintenance frequency, and guarantees the stable operation of the production line.

[0036] Furthermore, the outer diameter of the electroplated diamond circular cutting tool 4 is 50-200mm, the thickness is 1-5mm, the electroplated diamond circular cutting tool 4 is made of cemented carbide material, and the thickness of the diamond micro powder layer 41 is 5-30μm.

[0037] Carbide is selected as the base material for the electroplated diamond circular cutting blade 4, balancing structural strength and basic wear resistance. The outer diameter of the electroplated diamond circular cutting blade 4 is limited to 50-200mm and the thickness to 1-5mm, while the thickness of the diamond micro powder layer 41 is controlled to be 5-30μm. This satisfies the mechanical requirements during the slitting process while controlling production costs to ensure wear resistance. The electroplated diamond circular cutting blade 4 combines high strength and high wear resistance, adapting to the harsh conditions of high-speed slitting. Its size range is suitable for slitting requirements of different specifications of abrasive rolls, achieving "selection on demand." The reasonable parameter design balances wear resistance and cost, improving the economy of the equipment.

[0038] The electroplated diamond circular blade 4 on the upper cutter shaft 6 and the electroplated diamond circular blade 4 on the lower cutter shaft 7 are matched one-to-one to form a shearing structure.

[0039] The electroplated diamond circular blade 4 on the upper cutter shaft 6 and the electroplated diamond circular blade 4 on the lower cutter shaft 7 are precisely aligned, enabling their cutting edges to work together to ensure that the abrasive roll is instantly cut when passing through the blade assembly, avoiding pulling or tearing caused by blade misalignment. The slitting cut is smooth and even, reducing quality problems such as burrs and damage to the abrasive strip edges; it improves slitting efficiency, avoids secondary processing due to incomplete cutting, and further ensures the stability of product quality.

[0040] Furthermore, the lower cutter shaft 7 is connected to the power mechanism via the transmission sprocket 1. The power mechanism drives the lower cutter shaft 7 to rotate, and the large roll of abrasive cloth is fed between the upper and lower cutters of the upper and lower cutter shafts. The transmission sprocket 1 applies power, and the cutting edges of the upper and lower cutters form a shearing action, dividing the large roll of abrasive cloth into abrasive cloth strips.

[0041] The drive sprocket 1 receives the driving force from the power mechanism, driving the lower cutter shaft 7 to rotate. This, in conjunction with the electroplated diamond circular blade 4 on the upper cutter shaft 6, generates shearing force. Through mechanized conveying, the large roll of abrasive cloth is fed between the upper and lower cutter shafts 6 and 7, achieving batch slitting of the abrasive cloth roll into strips. This automates and slits the slitting process, meeting the needs of large-scale production. Stable power application and continuous slitting actions significantly improve production efficiency, reduce errors caused by manual intervention, and ensure consistency in batch production.

[0042] When using the wear-resistant abrasive roll slitting circular blade mechanism of this utility model, firstly, according to the thickness and target width of the abrasive roll to be slitted, the vertical distance between the upper blade shaft 6 and the lower blade shaft 7 is adjusted by increasing or decreasing the number of shim blocks 5 to ensure that the shearing gap meets the process requirements; then, several electroplated diamond circular blades 4 are fixed at equal intervals on the upper and lower blade shafts 6 and 7 using spacers 3 to ensure that the distance between adjacent blades is consistent with the target width of the abrasive strip, and the positions of the blades 4 on the upper and lower blade shafts are calibrated to ensure that they correspond one-to-one.

[0043] When the power mechanism is started, the torque is transmitted to the lower cutter shaft 7 through the transmission sprocket 1. Due to the rigid fit of the key connection, the lower cutter shaft 7 drives the electroplated diamond circular cutter 4 on it to rotate at a constant speed. The upper cutter shaft 6 is fitted with the cutter shaft base 2 through the bearing and rotates along with it under the friction of the abrasive roll, forming a relative shearing motion between the upper and lower cutters.

[0044] The large roll of abrasive cloth is fed at a constant speed between the upper cutter shaft 6 and the lower cutter shaft 7 through the conveying mechanism. When the abrasive roll passes the cutting edge of the corresponding electroplated diamond circular blade 4, the shearing force of the blade is instantly applied to the abrasive roll. Utilizing the high hardness and sharpness of the diamond micro powder layer 41, the large roll of abrasive cloth is precisely divided into abrasive cloth strips of a preset width.

[0045] During the slitting process, the diamond micro powder layer 41 effectively resists the frictional wear of the abrasive roll, ensuring the sharpness of the blade edge and the stability of the spacing; the transmission sprocket 1 continuously and stably transmits power, and the cooperation between the cutter shaft base 2 and the bearing ensures smooth rotation of the cutter shaft, realizing continuous batch slitting of the abrasive roll. The slitting strips are output through the conveying mechanism, completing the entire slitting process.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant abrasive roll slitting circular blade mechanism, characterized in that: The device includes an upper cutting shaft (6) and a lower cutting shaft (7). Several electroplated diamond circular cutting blades (4) are fitted on both the upper cutting shaft (6) and the lower cutting shaft (7). Adjacent electroplated diamond circular cutting blades (4) are abutted and fixed by spacers (3). Both ends of the upper cutting shaft (6) and the lower cutting shaft (7) are equipped with cutting shaft bases (2) through bearings. One end of the lower cutting shaft (7) is equipped with a transmission sprocket (1). The surface of the electroplated diamond circular cutting blades (4) is electroplated with a diamond micro powder layer (41). The diamond micro powder layer (41) at least covers the cutting edge of the electroplated diamond circular cutting blades (4) and the working surface in contact with the abrasive roll.

2. The wear resistant sand roll slitting circular knife mechanism of claim 1, wherein: The electroplated diamond circular blades (4) are arranged at equal intervals.

3. The wear resistant sand roll slitting circular knife mechanism of claim 1, wherein: Several pads (5) are provided between the two ends of the upper cutter shaft (6) and the lower cutter shaft (7) cutter shaft base (2). The pads (5) are stacked from top to bottom by a multi-layer plate structure.

4. The wear-resistant abrasive roll slitting circular blade mechanism according to claim 1, characterized in that: The lower cutting shaft (7) and the inner side of the transmission sprocket (1) are both provided with keyways, and the lower cutting shaft (7) is connected to the transmission sprocket (1) via a key for transmission.

5. The wear resistant sand roll slitting circular knife mechanism of claim 1, wherein: The outer diameter of the electroplated diamond circular blade (4) is 50-200mm and the thickness is 1-5mm. The electroplated diamond circular blade (4) is made of cemented carbide material and the thickness of the diamond micro powder layer (41) is 5-30μm.

6. The wear resistant sand roll slitting circular knife mechanism of claim 1, wherein: The electroplated diamond circular blade (4) on the upper cutter shaft (6) and the electroplated diamond circular blade (4) on the lower cutter shaft (7) are matched one-to-one to form a shearing structure.

7. The wear-resistant abrasive roll slitting circular blade mechanism according to claim 1, characterized in that: The lower cutting shaft (7) is connected to the power mechanism via the transmission sprocket (1). The power mechanism drives the lower cutting shaft (7) to rotate. The large roll of abrasive cloth is fed between the upper and lower blades of the upper and lower cutting shafts. The transmission sprocket (1) applies power, and the cutting edges of the upper and lower blades form a shearing action, dividing the large roll of abrasive cloth into abrasive cloth strips.

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