A cutting device and cutting method for strip steel production

Abstract

This invention relates to the field of metal material processing technology, and provides a cutting device and method for strip steel production. The device includes a frame and two cutting units, with a slitting space between the two cutting units for the strip steel to pass through. Each cutting unit includes a rotating roller, a mounting frame, and several sets of scraping blocks. Axially spaced circular cutters are fitted onto the rotating roller. The mounting frame is located on the feed side of the rotating roller and has guide components that intersect with the circular cutters. The guide components have guide surfaces. Each set of scraping blocks contains two scraping blocks, which slide against adjacent guide components. The scraping blocks have contact grooves, and the two scraping blocks slide towards each other to form a space for the edge of the circular cutter to pass through. The scraping blocks have scraping surfaces on the side of the scraping block closest to the rotating direction of the circular cutter, which can scrape off sticky impurities from the edge of the circular cutter. This invention solves the technical problem in the prior art where, when strip steel slitting cutting devices perform slitting operations on coated strip steel, the circular cutter easily adheres to the adhesive, generating sticky impurities, which in turn affects the cutting quality of the strip steel.

Description

Technical Field

[0001] This invention relates to the field of metal material processing technology, specifically to a cutting device and cutting method for strip steel production. Background Technology

[0002] As an important rolled metal product, strip steel is widely used in automobiles, home appliances, construction, packaging and other fields. In the production and subsequent processing of strip steel, according to the needs of downstream applications, it is often necessary to cut wide strip steel into narrow strip steel of different widths using slitting and cutting equipment. In this process, the core cutting component is mostly a disc cutter, which has become the mainstream tool in the field of strip steel slitting and cutting due to its high cutting edge sharpness, fast cutting efficiency and low wear rate.

[0003] With the increasing demand for functionalized strip steel, adhesive-coated strip steel with surface coatings is becoming more widely used. The adhesive coating on this type of strip steel can provide additional functions such as rust prevention, scratch resistance, and easy adhesion. However, in existing strip steel slitting and cutting devices, when cutting adhesive-coated strip steel, the high-speed rotating disc cutter comes into contact with the adhesive coating. The adhesive softens and melts under the frictional heat and pressure of the cutter body, thus firmly adhering to the cutting edge and surface of the disc cutter. Simultaneously, the adhered adhesive mixes with the cutting debris to form sticky impurities.

[0004] Sticky impurities not only directly damage the sharpness of the disc cutter's edge, leading to burrs, collapsed edges, and dimensional tolerance issues on the strip cut during subsequent cutting, severely affecting cutting quality; at the same time, as the disc cutter continues to rotate, the sticky impurities may also transfer to the strip cutting surface or the surface of the equipment guide rollers, causing strip surface contamination, guide roller jamming, and other malfunctions, increasing equipment maintenance frequency and costs; in addition, frequent machine shutdowns are required to clean the adhesive on the cutter body, significantly reducing production continuity and processing efficiency.

[0005] Currently, most industry solutions to this problem are temporary measures, such as regularly wiping the disc cutter manually and using low-viscosity colloidal coatings. These measures fail to provide a systematic solution from the perspective of the cutting device structure and the cutting process itself, and thus cannot avoid the impact of viscous impurities on cutting quality and production efficiency. Summary of the Invention

[0006] To overcome the above-mentioned defects, embodiments of the present invention provide a cutting device and cutting method for strip steel production, which solves the technical problem of low efficiency in cleaning sticky impurities adhering to the disc cutter when the strip steel slitting cutting device performs slitting cutting operation on coated strip steel.

[0007] According to one aspect, at least one embodiment of the present invention provides a cutting apparatus for strip steel production, comprising:

[0008] frame;

[0009] Two cutting units are vertically spaced on the frame, forming a slitting space between them for the strip steel to pass through. Each cutting unit includes:

[0010] A rotating roller is rotatably connected to the frame, and several axially spaced disc cutters are fitted on the rotating roller;

[0011] The mounting frame is located on the machine frame and on the feed side of the rotating roller. The mounting frame is provided with several guide components that are interleaved with the disc cutter. The guide components have a guide surface for guiding the strip steel on the side near the slitting space.

[0012] The scraping blocks are arranged in several groups, with each group of scraping blocks having two scraping blocks. The two scraping blocks in the same group are slidably connected to two adjacent guide components. The scraping blocks have a fitting groove that can fit with the edge of the disc cutter. The two scraping blocks can slide towards each other until they contact each other, so that a space is formed between the two fitting grooves for the edge of the disc cutter to pass through. The scraping blocks have a scraping surface on the side of the scraping block near the direction of rotation of the disc cutter. The scraping surface is used to scrape off sticky impurities adhering to the edge of the disc cutter when the disc cutter rotates.

[0013] For example, in a cutting device for strip steel production provided in at least one embodiment of the present invention, a telescopic member and a guide plate connected to the extended end of the telescopic member are provided inside the guide member. The telescopic direction of the telescopic member is perpendicular to the axial direction of the rotating roller. Two guide grooves are provided on the guide plate, which are symmetrically located on both sides of the main shaft of the telescopic member. The ends of the two guide grooves away from the telescopic member gradually move away from each other. A push rod that slides with the guide member is connected to the scraping block. The push rod is parallel to the axial direction of the rotating roller. The end of the push rod has a sliding column, which is slidably connected in the guide groove.

[0014] When the telescopic component retracts the guide plate, the sliding column slides along the guide groove, thereby driving the push rod and scraper block to slide synchronously closer to the disc cutter.

[0015] For example, in a cutting device for strip steel production provided in at least one embodiment of the present invention, a receiving groove for accommodating a scraping block is provided on the side of the guide member, and a cleaning plate is provided on the inner wall of the receiving groove below the scraping block. The cleaning plate is used to scrape off the sticky impurities adhering to the scraping surface when the scraping block slides into the receiving groove.

[0016] For example, in a cutting device for strip steel production provided in at least one embodiment of the present invention, a cleaning blade is provided on the outer side of the cleaning plate. When the scraping block slides into the receiving groove, the cleaning blade is used to scrape off the sticky impurities attached to the scraping surface.

[0017] For example, in a cutting device for strip steel production provided in at least one embodiment of the present invention, an installation slot is provided on the bottom wall of the receiving groove, and the cleaning plate is detachably inserted into the installation slot; the guide is also provided with a locking member for limiting the cleaning plate.

[0018] For example, in a strip steel production cutting device provided in at least one embodiment of the present invention, the guide member is provided with an air suction chamber, and a first air suction channel communicating with the air suction chamber is opened at one end of the guide member near the rotating roller. The first air suction channel is connected to the guide surface, and one end of the first air suction channel connected to the guide surface is arranged towards two adjacent disc cutters and is used to adsorb the flying chips generated when the adjacent disc cutters cut the strip steel.

[0019] For example, in a cutting device for strip steel production provided in at least one embodiment of the present invention, a second suction channel communicating with the suction chamber is provided on the inner bottom wall of the receiving groove. The second suction channel is set lower than the cleaning plate and is used to draw airflow to dry the sticky impurities on the cleaning plate.

[0020] For example, in a cutting device for strip steel production provided in at least one embodiment of the present invention, a rotating drive is provided on the side of the frame, and a rotating roller located above the frame is connected to the output end of the rotating drive and can rotate under the drive of the rotating drive; the two rotating rollers are connected by a transmission structure.

[0021] For example, in a cutting device for strip steel production provided in at least one embodiment of the present invention, a limiting groove is provided on the inner bottom wall of the receiving groove, and a limiting post is provided on the side of the scraping block near the guide member for sliding and limiting cooperation with the limiting groove.

[0022] A method for cutting strip steel during production, using a cutting device for strip steel production, comprising:

[0023] S1. Sliding and fitting of scraping blocks: Adjust the two scraping blocks of each group to slide towards each other on the two adjacent guides until they contact each other, so that a space is formed between the two fitting grooves for the edge of the disc cutter to pass through;

[0024] S2. Strip feeding: The adhesive-coated strip is introduced into the slitting space using the guide surface;

[0025] S3, Strip Cutting: Drive two rotating rollers to rotate so that the disc cutter cuts the strip. When the disc cutter rotates and cuts, the scraping surface can scrape off the sticky impurities attached to the edge of the disc cutter.

[0026] The beneficial effects of the embodiments of the present invention are as follows:

[0027] In this invention, the real-time removal of sticky impurities from the edge of the disc cutter is achieved through the arrangement of the scraping block and its cooperation with other components. Specifically, during the strip cutting process, the rotating roller drives the disc cutter to rotate at high speed, and the disc cutter cuts the strip passing through the slitting space. Since the groove of the scraping block is in contact with the edge of the disc cutter, and the scraping surface is located on the side of the disc cutter's rotation direction, when the disc cutter rotates, the sticky impurities adhering to its edge will come into contact with the scraping surface. The scraping surface forms a blocking effect on the sticky impurities, causing them to detach from the edge of the disc cutter, thereby preventing the sticky impurities from accumulating at the edge of the disc cutter.

[0028] By scraping away sticky impurities in real time, the sharpness of the disc cutter edge can be avoided, ensuring that the disc cutter always maintains a good cutting condition. This guarantees that the strip cut is free of burrs and slag, and that the dimensional tolerances meet the preset requirements, thus improving the cutting quality. Secondly, there is no need to frequently stop the machine to clean the sticky impurities on the disc cutter, which greatly improves the continuity of production and increases processing efficiency. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of a cutting device for strip steel production in one embodiment of the present invention;

[0031] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0032] Figure 3 for Figure 1 A partial structural schematic diagram of the cutting device in the embodiment;

[0033] Figure 4 for Figure 1 A schematic diagram of the guide component structure of the cutting device in the embodiment;

[0034] Figure 5 for Figure 1 A schematic diagram of the second angle structure of the guide component of the cutting device in the embodiment;

[0035] Figure 6 for Figure 1 A schematic diagram of the internal structure of the first cross-section of the guide component of the cutting device in the embodiment;

[0036] Figure 7 for Figure 1A schematic diagram of the internal structure of the guide component of the cutting device in the embodiment;

[0037] Figure 8 for Figure 1 The third cross-section of the guide component of the cutting device in the embodiment is shown as a schematic diagram of its internal structure.

[0038] In the diagram: 1. Frame, 2. Cutting unit, 3. Slitting space, 21. Rotating roller, 22. Disc cutter, 23. Mounting bracket, 24. Guide component, 241. Guide surface, 25. Scraping block, 255. Adhesion groove, 251. Scraping surface, 252. Push rod, 26. Telescopic component, 27. Guide plate, 271. Guide groove, 253. Sliding column, 242. Receiving groove, 28. Glue removal plate, 281. Cleaning blade, 243. Mounting slot, 244. Suction chamber, 245. First suction channel, 246. Second suction channel, 29. Rotation drive component, 247. Limiting groove, 254. Limiting column. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0040] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0041] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0044] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] In the field of metal processing, strip steel, as an important rolled product, is widely used in automobile manufacturing, home appliance production, construction decoration, and packaging industries. During the production and subsequent processing of strip steel, depending on the different width requirements of downstream applications, wide strip steel is typically cut into narrow strip steel using slitting equipment. Currently, in the field of strip steel slitting, the core cutting component is mostly a disc cutter. This type of cutter, with its high cutting edge sharpness, fast cutting efficiency, and low wear rate, has become the mainstream choice in the industry.

[0046] With the increasing demand for functionalized strip steel, adhesive-coated strip steel with a colloidal coating is becoming increasingly widely used. This coating provides additional functions such as rust prevention, scratch resistance, and easy adhesion. However, in existing slitting cutting equipment, when cutting adhesive-coated strip steel, the high-speed rotation of the disc cutter comes into contact with the colloidal coating. The colloidal coating softens or even melts due to the heat generated by the friction between the cutter and the pressure during cutting, thus firmly adhering to the cutting edge and surface of the disc cutter. This adhesion not only damages the sharpness of the disc cutter edge, leading to burrs and burrs on the cut strip steel, and causing dimensional tolerances to exceed preset ranges, severely affecting cutting quality, but also contains cutting debris, forming sticky impurities on the disc cutter. Removing these sticky impurities requires frequent machine stops for manual cleaning, significantly reducing production continuity and processing efficiency.

[0047] like Figure 1 and Figure 2 As shown, the strip steel production cutting device in this embodiment includes a frame 1. The frame 1 serves as the supporting foundation for the entire device and is used to install various functional components. Its structure must meet the load-bearing and stability requirements of the overall device. Two cutting units 2 are provided on the frame 1, distributed vertically at intervals. A slitting space 3 is formed between the two cutting units 2 for the strip steel to pass through. The height of the slitting space 3 can be adjusted according to the thickness of the strip steel to be cut to ensure that the strip steel can pass smoothly and make full contact with the cutting components.

[0048] Each cutting unit 2 includes a rotating roller 21, a mounting frame 23, and several sets of scraping blocks 25. The rotating roller 21 is mounted on the frame 1 via bearings and other rotating connecting parts, and can rotate freely around its own axis. The axis of the rotating roller 21 is perpendicular to the conveying direction of the strip steel, providing a mounting base and a carrier for the rotational power transmission of the disc cutters. Several disc cutters 22 are fitted onto the outer circumference of the rotating roller 21, and the disc cutters 22 are spaced apart along the axial direction of the rotating roller 21.

[0049] Mounting frame 23 is fixedly mounted on frame 1, and is located on the feed side of rotating roller 21 (i.e., the side where the strip enters the cutting area). The structure of mounting frame 23 can be set as frame type or plate type according to the installation requirements of guide component 24. Mounting frame 23 is provided with several guide components 24, which are staggered with several disc cutters 22, that is, one guide component 24 is set between two adjacent disc cutters 22 to avoid interference between the guide component 24 and the rotating disc cutter 22. The side of the guide component 24 near the slitting space 3 has a guide surface 241, which is a smooth plane. Its function is to guide the strip before it enters the slitting space 3, ensuring that the strip moves along the preset path to the cutting area of ​​the disc cutter 22, and avoiding the cutting position deviation caused by the strip deviating from the feed direction.

[0050] like Figures 2-4As shown, several sets of scraping blocks 25 and several guide members 24 are arranged at intervals. Each set of scraping blocks 25 includes two scraping blocks 25, which are slidably connected to two adjacent guide members 24. That is, one scraping block 25 can be connected to each side of a guide member 24, and two scraping blocks 25 on adjacent sides of adjacent guide members 24 form a set. The scraping blocks 25 are provided with a fitting groove 255. The shape of the fitting groove 255 is adapted to the shape of the edge of the disc cutter 22, and can fit with the edge of the disc cutter 22. When two scraping blocks 25 in the same set slide towards each other along the adjacent guide members 24 until they contact each other, a space is formed between the fitting grooves 255 of the two scraping blocks 25 for the edge of the disc cutter 22 to pass through. The size of this space is adapted to the thickness of the edge of the disc cutter 22, ensuring that the edge of the disc cutter 22 can pass smoothly and remain in contact with the fitting groove 255. In addition, the scraping block 25 is provided with a scraping surface 251 on the side near the rotating direction of the disc cutter 22. The scraping surface 251 is a smooth plane that keeps in contact with the disc cutter 22 and is used to scrape off the sticky impurities adhering to the disc cutter 22 during the rotation of the disc cutter 22.

[0051] By setting the scraping block 25, the sticky impurities on the edge of the disc cutter 22 are scraped off in real time. Specifically, during the strip cutting process, the rotating roller 21 drives the disc cutter 22 to rotate at high speed, and the disc cutter 22 cuts the strip passing through the slitting space 3. Since the contact groove 255 of the scraping block 25 is in contact with the edge of the disc cutter 22, and the scraping surface 251 is located on the side of the disc cutter 22 from which it rotates, when the disc cutter 22 rotates, the sticky impurities adhering to its edge will come into contact with the scraping surface 251. The scraping surface 251 forms a blocking effect on the sticky impurities, causing the sticky impurities to detach from the edge of the disc cutter 22, thereby preventing the sticky impurities from accumulating on the edge of the disc cutter 22.

[0052] The advantages are that real-time scraping of sticky impurities can prevent impurities from damaging the sharpness of the disc cutter 22, ensuring that the disc cutter 22 always maintains a good cutting state, thereby ensuring that the strip cut is free of burrs and collapsed edges, and that the dimensional tolerance meets the preset requirements, thus improving the cutting quality; secondly, there is no need to frequently stop the machine to clean the sticky impurities on the disc cutter 22, which greatly improves the continuity of production and increases processing efficiency.

[0053] Furthermore, to achieve automatic adjustment of the position of the scraper block 25 and improve adjustment accuracy and efficiency, in this embodiment, the guide component 24 is also provided with a telescopic component 26 and a guide plate 27, such as... Figures 2-6As shown. The telescopic component 26 is fixedly installed inside the guide component 24. The telescopic direction of the telescopic component 26 is perpendicular to the axial direction of the rotating roller 21. The telescopic component 26 can be a linear drive component such as a cylinder, hydraulic cylinder, or electric push rod. Its extended end is fixedly connected to the guide plate 27, which can drive the guide plate 27 to move in a direction perpendicular to the axial direction of the rotating roller 21. Two guide grooves 271 are formed on the guide plate 27. The two guide grooves 271 are symmetrically distributed on both sides of the main shaft of the telescopic component 26, and the ends of the two guide grooves 271 away from the telescopic component 26 extend in a mutually distancing direction, forming an inclined groove structure.

[0054] A push rod 252 is fixedly connected to the scraping block 25, and the push rod 252 and the guide member 24 form a sliding fit, that is, the guide member 24 has a sliding hole for the push rod 252 to pass through, and the push rod 252 can slide freely along the sliding hole. The end of the push rod 252 away from the scraping block 25 is provided with a sliding post 253. The sliding post 253 is set perpendicular to the push rod 252, and the sliding post 253 is embedded in the guide groove 271, forming a sliding fit with the guide groove 271, that is, the sliding post 253 can slide freely along the extension direction of the guide groove 271.

[0055] When it is necessary to adjust the scraper block 25 to be closer to the disc cutter 22, the telescopic component 26 is activated. The extended end of the telescopic component 26 drives the guide plate 27 to retract (i.e., move towards the telescopic component 26). During the retraction of the guide plate 27, the inner wall of the guide groove 271 generates a thrust on the sliding column 253 along the extension direction of the guide groove 271, causing the sliding column 253 to slide along the guide groove 271 to the side away from the telescopic component 26. Since the ends of the guide groove 271 away from the telescopic component 26 are far apart, the sliding column 253 will drive the push rod 252 to move when it slides. The push rod 252 then pushes the scraper block 25 to slide synchronously, realizing the adjustment of the scraper block 25 to be closer to the disc cutter 22.

[0056] This structure provides power through the telescopic component 26, and in conjunction with the transmission cooperation between the guide groove 271 and the sliding column 253, it converts the vertical movement of the telescopic component 26 into the axial movement of the scraper block 25 parallel to the rotating roller 21, thus achieving automatic adjustment of the scraper block 25's position. This further ensures the scraping effect of the scraping surface 251 on sticky impurities. Simultaneously, the symmetrical distribution of the two guide grooves 271 ensures balanced force on the push rod 252, preventing tilting or jamming of the scraper block 25 during sliding and ensuring smooth sliding of the scraper block 25.

[0057] Meanwhile, to facilitate the storage of the scraping block 25 and the cleaning of the scraping surface 251, a receiving groove 242 is provided on the side of the guide member 24, such as... Figures 3-6As shown. The cavity size of the receiving groove 242 is adapted to the shape of the scraper block 25. When no cutting operation is required or when maintenance of the scraper block 25 is needed, the scraper block 25 can be slid into the receiving groove 242 to store the scraper block 25 and prevent the scraper block 25 from being exposed to the outside and damaged by collision.

[0058] A cleaning plate 28 is provided on the inner wall of the receiving groove 242. The height of the cleaning plate 28 is lower than that of the scraping block 25, that is, the top surface of the cleaning plate 28 is lower than the bottom surface (or the surface where the scraping surface 251 is located) of the scraping block 25. When the scraping block 25 slides into the receiving groove 242, the scraping surface 251 will contact the top surface of the cleaning plate 28. As the scraping block 25 continues to slide, the cleaning plate 28 will scrape off the sticky impurities attached to the scraping surface 251, peeling the sticky impurities off the scraping surface 251, thus cleaning the scraping surface 251.

[0059] Optionally, to improve the scraping effect of the cleaning plate 28 on the sticky impurities of the scraping surface 251, a cleaning blade 281 is provided on the outer edge of the cleaning plate 28, such as... Figure 4 As shown. The cleaning blade 281 extends along the length of the cleaning plate 28, and the cutting edge of the cleaning blade 281 faces the sliding direction of the scraping block 25. When the scraping block 25 slides into the receiving groove 242, the cutting edge of the cleaning blade 281 contacts the scraping surface 251. Through the shearing action of the cutting edge, the sticky impurities attached to the scraping surface 251 can be scraped off more efficiently, especially for stubborn impurities accumulated after long-term scraping. This prevents impurities from forming a hardened layer on the scraping surface 251, ensuring that the scraping surface 251 remains clean at all times, thereby maintaining the scraping surface 251's ability to remove sticky impurities from the edge of the disc cutter 22.

[0060] To facilitate the replacement and maintenance of the adhesive removal plate 28, an installation slot 243 is provided on the bottom wall of the receiving groove 242, such as... Figure 4 and Figure 5 As shown. The mounting slot 243 extends in a direction perpendicular to the sliding direction of the scraper block 25. One end of the cleaning plate 28 is embedded in the mounting slot 243, forming a detachable insertion fit. The guide member 24 is also provided with a locking member (not shown in the figure). The locking member can be a bolt structure, with one end penetrating through the side wall of the guide member 24 and extending into the mounting slot 243. When the cleaning plate 28 is inserted into the mounting slot 243, the locking member is tightened, and the end of the locking member will abut against the side wall of the cleaning plate 28, thereby limiting and fixing the cleaning plate 28 and preventing the cleaning plate 28 from shifting or coming out of the mounting slot 243 during operation.

[0061] When the cleaning plate 28 wears down due to long-term use or the cleaning blade 281 becomes dull, the locking mechanism can be loosened, the old cleaning plate 28 can be pulled out of the mounting slot 243, and the new cleaning plate 28 can be inserted into the mounting slot 243 and secured with the locking mechanism to complete the replacement of the cleaning plate 28. This detachable structure eliminates the need to replace the entire guide component 24 due to wear of the cleaning plate 28, reducing the maintenance cost of the device, shortening maintenance time, and improving maintenance efficiency.

[0062] To address the issue of flying debris generated during various strip cutting processes, the guide component 24 is equipped with an air suction chamber 244, such as... Figure 6 , Figure 7 As shown. The suction chamber 244 extends along the length of the guide member 24, and the suction chamber 244 can be connected to an external negative pressure source (such as a vacuum pump) through a pipe to create a continuous negative pressure environment inside the suction chamber 244.

[0063] A first suction channel 245 is provided at one end of the guide component 24 near the rotating roller 21. One end of the first suction channel 245 is connected to the suction chamber 244, and the other end extends through to the guide surface 241 of the guide component 24, forming an opening. The opening of the first suction channel 245 faces the area between two adjacent disc cutters 22, that is, the opening corresponds to the cutting area of ​​the disc cutter 22. When the disc cutter 22 cuts the strip steel, metal shavings are generated. If these shavings fall on the cutting edge of the disc cutter 22 or the surface of the strip steel, they will affect the cutting quality or cause contamination of the strip steel surface. At this time, the negative pressure in the suction chamber 244 is transmitted to the opening of the guide surface 241 through the first suction channel 245, forming an adsorption airflow around the opening. The shavings are captured by the adsorption airflow and enter the suction chamber 244 through the first suction channel 245. Then, they are transported to an external collection device through a pipe connected to the suction chamber 244 to achieve centralized collection of the shavings.

[0064] This structure removes flying debris generated during the cutting process in real time through negative pressure adsorption, preventing it from adhering to the cutting edge of the disc cutter 22 and causing accelerated edge wear. It also prevents flying debris from contaminating the strip surface, further improving the cutting quality and surface cleanliness of the strip. Furthermore, the opening of the first suction channel 245 faces the cutting area, ensuring precise coverage of the source of flying debris, improving adsorption efficiency and avoiding wasted airflow.

[0065] Furthermore, a second suction channel 246 is provided on the inner bottom wall of the receiving groove 242, such as... Figures 6-8 As shown. One end of the second suction channel 246 is connected to the suction chamber 244, and the other end extends through to the inner bottom wall surface of the receiving groove 242, forming an opening. The opening of the second suction channel 246 is set at a height lower than the setting height of the cleaning plate 28, that is, the opening is located below the cleaning plate 28.

[0066] After the cleaning plate 28 removes the sticky impurities from the scraping surface 251, some impurities will adhere to the surface of the cleaning plate 28. If not cleaned in time, these impurities will accumulate on the cleaning plate 28, affecting the subsequent cleaning effect on the scraping surface 251. At this time, the negative pressure in the suction chamber 244 is transmitted to the opening of the bottom wall of the receiving groove 242 through the second suction channel 246, forming a suction airflow around the opening. The airflow flows from the space in the receiving groove 242 to the opening of the second suction channel 246. When it flows through the surface of the cleaning plate 28, it will carry away the moisture or solvent on the surface of the sticky impurities on the cleaning plate 28, causing the impurities to dry quickly and fall off the surface of the cleaning plate 28. The fallen impurities will be sucked into the second suction channel 246 by the suction airflow, and then into the suction chamber 244, and transported to the external collection device along with the flying debris.

[0067] This structure shares a negative pressure source with the suction chamber 244, eliminating the need for an additional power unit, simplifying the device structure and reducing equipment costs. Simultaneously, through the dual action of airflow drying and suction, some sticky impurities on the cleaning plate 28 can be removed, ensuring the cleaning plate 28 remains as clean as possible and maintaining the cleaning effect on the scraping surface 251.

[0068] To achieve synchronous rotation of the two rotating rollers 21, a rotation drive component 29 is provided on the side of the frame 1, such as... Figure 1 As shown. The rotation drive component 29 can be a motor structure, and its output end is connected to one end of the rotating roller 21 located above the frame 1 through a coupling or other connecting component, which can drive the upper rotating roller 21 to rotate around its own axis. The two rotating rollers 21 are connected by a transmission structure ( Figure 1 The left side of the structure is connected, and the transmission structure can be in the form of chain drive or belt drive, etc., to transmit the power of the upper rotating roller 21 to the lower rotating roller 21, so that the two rotating rollers 21 can rotate synchronously and in opposite directions (that is, when the upper rotating roller 21 rotates clockwise, the lower rotating roller 21 rotates counterclockwise) to adapt to the conveying direction of the strip steel and form a shearing force on the strip steel.

[0069] When the rotating drive component 29 is activated, it drives the upper rotating roller 21 to rotate. The upper rotating roller 21 transmits torque to the lower rotating roller 21 through the transmission structure, causing the lower rotating roller 21 to rotate synchronously. When the two rotating rollers 21 rotate synchronously, they drive the disc cutter 22 on them to rotate synchronously, and together cut the strip steel passing through the slitting space 3. This avoids the problem of the strip steel being stretched and deformed or the cutting trajectory being deviated due to the difference in the rotation speed of the two rotating rollers 21, and further ensures the cutting quality of the strip steel.

[0070] To ensure the accuracy of the sliding trajectory of the scraper block 25, a limiting groove 247 is provided on the inner bottom wall of the receiving groove 242, such as... Figure 6 , Figure 7As shown. The limiting groove 247 extends along the sliding direction of the scraping block 25. The scraping block 25 is provided with a limiting post 254 on the side near the guide member 24. The limiting post 254 is set perpendicular to the sliding direction of the scraping block 25, and one end of the limiting post 254 is embedded in the limiting groove 247, forming a sliding fit with the limiting groove 247. That is, the limiting post 254 can slide freely along the extending direction of the limiting groove 247.

[0071] When the scraper block 25 slides along the guide member 24, the limiting post 254 slides synchronously along the limiting groove 247. The inner wall of the limiting groove 247 constrains the limiting post 254, preventing it from moving to either side perpendicular to the sliding direction. This limits the offset of the scraper block 25, ensuring that the scraper block 25 always slides along a preset trajectory parallel to the axis of the rotating roller 21. This avoids misalignment between the edge of the fitting groove 255 and the disc cutter 22 due to the offset of the scraper block 25. Simultaneously, the cooperation between the limiting post 254 and the limiting groove 247 disperses the force on the scraper block 25 during sliding, reducing the sliding friction between the scraper block 25 and the guide member 24, lowering the wear rate of both, extending the service life of the components, and preventing the scraper block 25 from jamming due to excessive friction, ensuring smooth sliding of the scraper block 25.

[0072] In addition to the aforementioned apparatus, this application also provides a method for cutting strip steel during production. This method uses a cutting apparatus for strip steel production and specifically includes the following steps:

[0073] The first step is the sliding contact of the scraping blocks 25. The telescopic component 26 is activated, causing the guide plate 27 to retract. Through the cooperation of the guide groove 271 and the sliding column 253, the push rod 252 moves. The push rod 252 pushes the two scraping blocks 25 in each group to slide towards each other along the two adjacent guide components 24 until the two scraping blocks 25 contact each other. At this point, a space is formed between the contact grooves 255 of the two scraping blocks 25 for the edge of the disc cutter 22 to pass through, and the scraping surface 251 remains in contact with the disc cutter 22.

[0074] The second step is strip feeding. The coated strip to be cut is conveyed to the mounting frame 23. The edge of the strip contacts the guide surface 241 of the guide component 24. Under the guidance of the guide surface 241, the strip gradually enters the slitting space 3 between the two cutting units 2 along the preset path until the cutting position of the strip is aligned with the disc cutter 22.

[0075] The third step is strip cutting. The rotating drive unit 29 is activated, which drives the upper rotating roller 21 to rotate. The upper rotating roller 21, through a transmission structure, drives the lower rotating roller 21 to rotate synchronously in the opposite direction. The two rotating rollers 21 drive the disc cutter 22 on them to rotate synchronously. The disc cutter 22 slits the strip passing through the slitting space 3. During the rotation of the disc cutter 22, the scraping surface 251 of the scraping block 25 continuously contacts the edge of the disc cutter 22, scraping away the sticky impurities adhering to the edge of the disc cutter 22. Simultaneously, the negative pressure in the suction chamber 244 adsorbs the cutting debris through the first suction channel 245, and dries and removes the sticky impurities on the cleaning plate 28 through the second suction channel 246.

[0076] After the cutting operation is completed, turn off the rotating drive 29 and the negative pressure source, and slide the scraper block 25 into the receiving groove 242 for storage. At this time, the cleaning plate 28 will clean the scraping surface 251. If the cleaning plate 28 is worn, the locking part can be loosened to replace the new cleaning plate 28 for subsequent use.

[0077] This cutting method, through its coordinated operation with the device structure, achieves high-quality and high-efficiency cutting of coated steel strips, while solving the problem of adhesive adhesion. Compared with existing cutting methods, it not only improves cutting quality and production efficiency but also reduces equipment maintenance costs, demonstrating good practicality and economy.

[0078] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A cutting device for strip steel production, characterized in that, The utility model relates to a cutting device for strip steel, which comprises: a rack (1); two cutting units (2) vertically spaced apart on the rack (1), a slitting space (3) for passing strip steel being formed between the two cutting units (2), each cutting unit (2) comprising: a rotating roller (21) rotatably connected to the rack (1), a plurality of disc knives (22) axially spaced apart being sleeved on the rotating roller (21); a mounting rack (23) provided on the rack (1) and located on the feeding side of the rotating roller (21), a plurality of guide members (24) being provided on the mounting rack (23) and staggered with the disc knives (22), the guide members (24) being provided with guide surfaces (241) for guiding strip steel on the side close to the slitting space (3); a plurality of groups of scraping blocks (25), each group of scraping blocks (25) being spaced apart from the guide members (24), each group of scraping blocks (25) comprising two scraping blocks (25), the two scraping blocks (25) in the same group being slidably connected to two adjacent guide members (24), respectively, the scraping blocks (25) being provided with abutting grooves (255) capable of abutting the edges of the disc knives (22), the two scraping blocks (25) being capable of sliding towards each other to contact each other to form a space between the two abutting grooves (255) for the edges of the disc knives (22) to pass through, the scraping blocks (25) being provided with scraping surfaces (251) on the side close to the rotating direction of the disc knives (22), the scraping surfaces (251) being used for scraping off sticky impurities adhered to the edges of the disc knives (22) when the disc knives (22) rotate; the guide members (24) being provided with retractable members (26) and guide plates (27) connected to the extending ends of the retractable members (26), the retractable direction of the retractable members (26) being perpendicular to the axial direction of the rotating roller (21), the guide plates (27) being provided with two guide grooves (271) symmetrically located on both sides of the main shaft of the retractable members (26), the two guide grooves (271) gradually moving away from each other at the ends away from the retractable members (26), the scraping blocks (25) being provided with push rods (252) slidably connected to the guide members (24), the push rods (252) being parallel to the axial direction of the rotating roller (21), the push rods (252) being provided with sliding columns (253) at the ends, and the sliding columns (253) being slidably connected to the guide grooves (271); when the retractable members (26) retract the guide plates (27), the sliding columns (253) slide along the guide grooves (271) to drive the push rods (252) and the scraping blocks (25) to synchronously slide close to the disc knives (22).

2. The cutting device for strip steel production according to claim 1, characterized in that, The side of the material guide piece (24) is provided with a containing groove (242) for containing the scraping block (25), and the inner wall of the containing groove (242) is provided with a glue removing plate (28) arranged below the scraping block (25), which is used for scraping off the sticky impurities adhered to the scraping surface (251) when the scraping block (25) slides into the containing groove (242).

3. The cutting device for strip steel production according to claim 2, characterized in that, The outer side of the glue removing plate (28) is provided with a removing blade (281), which is used for scraping off the sticky impurities adhered to the scraping surface (251) when the scraping block (25) slides into the containing groove (242).

4. The cutting device for strip steel production according to claim 2, characterized in that, The bottom wall of the containing groove (242) is provided with a mounting slot (243), and the glue removing plate (28) is detachably inserted into the mounting slot (243); and the material guide piece (24) is further provided with a locking piece for limiting the glue removing plate (28).

5. The cutting device for strip steel production according to claim 3, characterized in that, The material guide piece (24) is internally provided with an air suction cavity (244), and the end of the material guide piece (24) close to the rotating roller (21) is provided with a first air suction channel (245) in communication with the air suction cavity (244), the first air suction channel (245) is in communication with the material guide surface (241), and the end of the first air suction channel (245) in communication with the material guide surface (241) is arranged towards the adjacent two disc cutters (22) and is used for sucking the flying chips generated when the adjacent disc cutters (22) cut the strip steel.

6. The cutting device for strip steel production according to claim 5, characterized in that, The inner bottom wall of the containing groove (242) is provided with a second air suction channel (246) in communication with the air suction cavity (244), the second air suction channel (246) is arranged below the glue removing plate (28) and is used for sucking air flow to dry the sticky impurities on the glue removing plate (28).

7. The cutting device for strip steel production according to claim 1, characterized in that, The side of the rack (1) is provided with a rotating driving piece (29), the rotating roller (21) located above the rack (1) is connected with the output end of the rotating driving piece (29) and can rotate under the driving of the rotating driving piece (29); and the two rotating rollers (21) are drivingly connected through a transmission structure.

8. The cutting device for strip steel production according to claim 2, characterized in that, The inner bottom wall of the containing groove (242) is provided with a limiting groove (247), and the scraping block (25) is provided with a limiting column (254) on the side close to the material guide piece (24) and used for sliding limiting cooperation with the limiting groove (247).

9. A method of cutting a strip steel product using a cutting device as claimed in any one of claims 1 to 8, characterised in that, The method comprises the following steps: S1, sliding and abutting of the scraping block (25): adjusting two scraping blocks (25) of each group to slide and abut close to each other on the adjacent two material guide pieces (24) to form a space for the edge of the disc cutter (22) to pass through between the two abutting grooves (255); S2, strip steel feeding: introducing the coated strip steel into the slitting space (3) through the material guide surface (241); S3, strip steel cutting: driving the two rotating rollers (21) to rotate to make the disc cutter (22) cut the strip steel, and the scraping surface (251) can scrape off the sticky impurities adhered to the edge of the disc cutter (22) when the disc cutter (22) rotates and cuts.

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