Cold-rolled steel strip slitting equipment

Abstract

The invention relates to the technical field of steel strip cutting and slitting, in particular to cold-rolled steel strip slitting equipment which comprises a cutting mechanism, the cutting mechanism comprises a cutting knife used for cutting a steel strip, a first iron core is arranged on the side wall of the cutting knife in a sliding mode, and a first electromagnetic coil making contact with the first iron core is arranged on the outer gap of the first iron core in a sleeving mode; and the bottom end of the cutting knife is fixedly connected with a second iron core. After a steel belt is placed on the top of the cutting table, the steel belt can push a rotating wheel and a rolling frame to synchronously move upwards, the telescopic end of a first elastic telescopic rod drives a first conducting strip to slide on a first resistance plate, the current of a first sliding rheostat is detected through a current detection module in a PLC, and therefore the thickness of the steel belt is fed back; according to the thickness of the steel belt, the PLC controls current introduced into the first electromagnetic coil and the second electromagnetic coil, so that the cutting knife generates proper frequency to perform high-frequency vibration up and down and left and right.

Description

Technical Field

[0001] The invention relates to the technical field of steel strip cutting and slitting, and in particular to a cold-rolled steel strip slitting device. Background Art

[0002] Cold-rolled steel strip is a steel strip product produced by the cold rolling process. Cold rolling is a metal processing process in which metal is rolled below its recrystallization temperature, usually at room temperature. This process can produce thin steel plates or strips with high strength, hardness and surface quality. In order to meet different requirements for the width of the steel strip in different application scenarios, the cold-rolled steel strip needs to be stripped. The standard width of the cold-rolled steel strip can be cut into the required width to meet the specific needs of various customers and products. For example, a cold-rolled steel strip stripping equipment disclosed in application number CN202221238652.5.

[0003] The existing cold-rolled steel strip slitting equipment usually uses a rated rotating tool or an up and down reciprocating cutting tool to cut and strip the steel strip during the steel strip slitting process. When facing steel strips of different thicknesses, the same cutting rate is still used. If the same rate is used, the thicker steel strip may not be completely cut through, resulting in incomplete slitting. For thinner steel strips, too high a cutting rate may cause the material to overheat, deform or even break. In addition, due to long-term cutting of the steel strip, the knife blade will cause wear or dents, which will cause burrs, irregular edges or protrusions on the cut surface of the cut steel strip. The existing slitting equipment can only detect the cutting tool after the entire steel strip is cut. This means that a part of the steel strip may have burrs, irregular edges or protrusions due to knife wear or dents, resulting in a decrease in the quality of this part of the steel strip, affecting the appearance and performance of the finished product. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a cold-rolled steel strip slitting equipment, which can effectively solve the problems that the prior art cannot adaptively adjust the cutting rate of the steel strip when facing steel strips of different thicknesses and cannot detect the real-time status of the cutting tool in real time.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a cold-rolled steel strip slitting device, comprising: A cutting mechanism, wherein the cutting mechanism comprises a cutting knife for cutting the steel strip, a first iron core is slidably arranged on the side wall of the cutting knife, a first electromagnetic coil is sleeved in the outer gap of the first iron core, a second iron core is fixedly connected to the bottom end of the cutting knife, and a second electromagnetic coil is sleeved in the outer gap of the second iron core; An adaptive cutting adjustment mechanism, the adaptive cutting adjustment mechanism includes a first electric telescopic rod for pushing the cutting knife to move up and down, the adaptive cutting adjustment mechanism also includes a detection component for detecting the cutting condition of the steel strip, the detection component includes a friction block for detecting the friction force of the cutting surface, and a first sliding rheostat is arranged on the top of the friction block.

[0006] Preferably, it also includes an operating panel, the top of the operating panel is fixedly connected to a cutting cover, the inner wall of the cutting cover is fixedly connected to a cutting table, the top of the cutting table is provided with two symmetrical extrusion grooves, the top of the cutting table is fixedly connected to a first limit plate, the two extrusion grooves are slidably connected to sliding blocks, the tops of the two sliding blocks are commonly fixedly connected to a second limit plate, a threaded rod is rotatably provided in one of the extrusion grooves, and the thread of the threaded rod passes through one of the sliding blocks, and the outer wall of the cutting cover is fixedly connected to a first motor for driving the threaded rod.

[0007] Preferably, the inner wall of the cutting cover is rotatably connected to the post-cutting steel bar winding roller and the post-cutting steel strip winding roller, and the outer wall of the cutting cover is fixedly connected to two second motors for driving the post-cutting steel bar winding roller and the post-cutting steel strip winding roller, and the post-cutting steel bar winding roller is closer to the cutting knife than the post-cutting steel strip winding roller, and the inner top wall of the cutting cover is fixedly connected to a plurality of second electric telescopic rods, and the telescopic ends of the second electric telescopic rods are fixedly connected to an extrusion frame, and the inner wall of the extrusion frame is rotatably provided with an extrusion roller for extruding the steel strip.

[0008] Preferably, the cutting mechanism also includes a first elastic telescopic rod fixedly connected to the inner top wall of the cutting cover, the telescopic end of the first elastic telescopic rod is fixedly connected to a rolling frame, the inner wall of the rolling frame is rotatably provided with a rotating wheel, the inner top wall of the cutting cover is fixedly connected to a first resistor plate, the outer wall of the first resistor plate slides in contact with a first conductive sheet fixedly connected to the outer wall of the telescopic end of the first elastic telescopic rod, the first conductive sheet and the first resistor plate are electrically connected to a PLC controller to form a detection circuit, the first conductive sheet and the first resistor plate constitute a second sliding rheostat, and during the sliding of the first conductive sheet on the first resistor plate toward the bottom, the resistance of the second sliding rheostat in the detection circuit gradually decreases, and the PLC controller is electrically connected to the second electric telescopic rod to form an extrusion circuit.

[0009] Preferably, a cutting groove is provided at the top of the cutting table, and the cutting knife is in the cutting groove to cut the steel strip, the top of the first electric telescopic rod is fixedly connected to a support plate, the top of the support plate is fixedly connected to a connecting plate, the outer wall of the connecting plate is provided with two upper and lower symmetrical sliding grooves, the two upper and lower sliding grooves are slidably connected with a first moving block, the outer wall of the first moving block is fixedly connected with a moving groove, the inner wall of the moving groove is slidably connected with a second moving block fixedly connected to the back of the cutting groove, a support strip that is in sliding contact with the back of the cutting groove is fixedly connected between the two first moving blocks, the top of the support plate is provided with an adaptation groove, the inner wall of the adaptation groove is slidably connected with a sliding block, the top of the sliding block is fixedly connected to the first electromagnetic coil, and the top of the sliding block is fixedly connected to the first air cylinder that is air-tightly slidably connected to the first iron core.

[0010] Preferably, an adjustment groove is provided on the knife side of the cutting groove, an adjustment block is slidably connected to the inner wall of the adjustment groove, the outer wall of the adjustment block is fixedly connected to the second iron core, a vibration groove is provided on the side wall of the cutting groove, the second electromagnetic coil is fixedly connected to the inner wall of the vibration groove, the inner wall of the vibration groove is fixedly connected to the second air cylinder which is airtightly slidably connected to the second iron core, and the PLC controller is electrically connected to the first electromagnetic coil and the second electromagnetic coil to form a cutting circuit.

[0011] Preferably, the detection assembly includes a second elastic telescopic rod fixedly connected to the outer wall of one side of the first limit block facing the second limit plate, the telescopic end of the second elastic telescopic rod is fixedly connected to a detection frame, the inner wall of the detection frame is slidably connected to the friction block, a spring is fixedly connected between the friction block and the detection frame, and the friction block is in contact with the cutting surface; The first sliding rheostat includes a second conductive sheet fixedly connected to the top of the friction block, a vertical plate fixedly connected to the top of the detection frame, a second resistor plate fixedly connected to the top of the vertical plate in sliding contact with the top of the second conductive sheet, the PLC controller is electrically connected to the second conductive sheet, the second resistor plate, and the first electric telescopic rod to form a regulation loop, and when the second conductive sheet slides on the second resistor plate away from the cutting knife, the resistance of the first sliding rheostat gradually decreases during regulation.

[0012] Preferably, the top of the cutting hood is fixedly connected to a water tank, the inner wall of the cutting hood is fixedly connected to an extension plate, the outer wall of the extension plate is provided with two symmetrical slide grooves, the inner wall of the slide groove is slidably connected to a lifting block, the two lifting blocks are respectively fixedly connected to a water spray plate and an exhaust hood, the inner top wall of the cutting hood is fixedly connected to a water pump, the water pumping end of the water pump is connected to the inside of the water tank, the water discharge end of the water pump is connected to the water spray plate, the outer wall of the cutting hood is fixedly connected to a collecting box, the inner wall of the cutting hood is fixedly connected to a gas-liquid mixing pump, the collecting end of the gas-liquid mixing pump is connected to the exhaust hood, the output end of the gas-liquid mixing pump is connected to the collecting box, the PLC controller is electrically connected to the water pump and the gas-liquid mixing pump to form a cooling circuit.

[0013] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: 1. After the steel strip is placed on the top of the cutting table, the steel strip will push the rotating wheel and the rolling frame to move upward synchronously, so that the telescopic end of the first elastic telescopic rod drives the first conductive sheet to slide on the first resistor plate, and the current detection module in the PLC controller detects the current of the first sliding rheostat, thereby feeding back the thickness of the steel strip. According to the thickness of the steel strip, the PLC controller controls the current passed into the first electromagnetic coil and the second electromagnetic coil, so that the cutting knife generates a suitable frequency for high-frequency vibration up and down and left and right. For example, for thin steel strips, the vibration frequency is reduced and cut in a gentle manner to avoid excessive deformation of the steel strip; for thick steel strips, the vibration frequency is increased, the number of impact cutting times per unit time is increased, and the cutting efficiency is improved. In addition, the high-frequency vibration of the cutting knife up and down makes the cutting amount of each cutting very small, reduces burrs and unevenness, and makes the cutting surface smoother, thereby improving the uniformity of the cutting surface.

[0014] 2. The detection frame and the friction block are driven forward by the second elastic telescopic rod, so that the friction block is tightly attached to the cut surface of the steel strip after cutting. As the cutting knife wears, the cut surface of the steel strip becomes rough, and the friction force increases. The friction block drives the second conductive plate to move forward on the second resistor plate, changing the current of the second sliding rheostat. The current detection module in the PLC controller detects the current. When the current reaches the threshold value at which the cutting knife is about to need to be replaced according to the pre-tested current, the PLC controller controls the first electric telescopic rod to push the support plate and the connecting plate to move upward synchronously, driving the cutting knife to move upward, changing the cutting position, and ensuring the cutting effect of the steel strip.

[0015] 3. There are many benefits to the up and down, left and right high-frequency vibration of the cutting knife, as follows: the up and down high-frequency vibration makes the cutting knife move with a small amplitude when it contacts the material, which can reduce the force required for each cut and reduce the overall cutting force. The cutting amount of each cut is small, which can reduce burrs and unevenness, make the cutting surface smoother, and improve the uniformity of the cutting surface; the left and right high-frequency vibration can speed up the material removal speed, especially when the cutting path is long, it can help the tool complete the cutting task more quickly, and it can also quickly remove the debris and residue generated during the cutting process to avoid chip accumulation and material adhesion, which helps to keep the cutting area clean and improve the cutting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of a partially sectional three-dimensional structure of another angle of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the detection frame of the present invention; Figure 5 It is a partial three-dimensional structural schematic diagram of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the cutting mechanism of the present invention; Figure 7 For the present invention Figure 6 The enlarged structural diagram of part A in the middle; Figure 8 For the present invention Figure 3 The enlarged structural diagram of part B is shown in the figure.

[0018] 1. Operation panel; 2. Cutting cover; 3. Cutting table; 4. Cutting mechanism; 41. Cutting knife; 42. First iron core; 43. First electromagnetic coil; 44. Second iron core; 45. Second electromagnetic coil; 46. First elastic telescopic rod; 47. Rolling frame; 48. Rotating wheel; 49. First resistor plate; 410. First conductive sheet; 411. Cutting groove; 412. Support plate; 413. Connecting plate; 414. Up and down sliding groove; 415. First moving block; 416. Moving groove; 417. Second moving block; 418. Support bar; 419. Adaptive groove; 4110. Sliding block; 4111. First air cylinder; 4112. Adjusting groove; 4113. Adjusting block; 4114. Vibrating groove; 4115. Second air cylinder; 5. Self Adapt to cutting adjustment mechanism; 51, first electric telescopic rod; 52, detection component; 521, friction block; 522, second elastic telescopic rod; 523, detection frame; 524, spring; 525, second conductive sheet; 526, vertical plate; 527, second resistor plate; 6, extrusion groove; 7, first limit plate; 8, sliding block; 9, second limit plate; 10, threaded rod; 11, first motor; 12, steel strip winding roller after cutting; 13, steel strip winding roller after cutting; 14, second motor; 15, second electric telescopic rod; 16, extrusion frame; 17, extrusion roller; 18, water storage tank; 19, extension plate; 20, slide; 21, lifting block; 22, water spray plate; 23, exhaust hood; 24, water pump; 25, collection box; 26, gas-liquid mixing pump. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The present invention will be further described below in conjunction with the embodiments.

[0021] Example: Refer to Figures 1 to 8 , a cold-rolled steel strip slitting equipment, comprising: An operating panel 1, the top of the operating panel 1 is fixedly connected with a cutting cover 2, the inner wall of the cutting cover 2 is fixedly connected with a cutting table 3, the top of the cutting table 3 is provided with two symmetrical extrusion grooves 6, the top of the cutting table 3 is fixedly connected with a first limit plate 7, the two extrusion grooves 6 are slidably connected with sliding blocks 8, the tops of the two sliding blocks 8 are commonly fixedly connected with a second limit plate 9, a threaded rod 10 is rotatably arranged in one of the extrusion grooves 6, and the threaded rod 10 threadably penetrates one of the sliding blocks 8, and the outer wall of the cutting cover 2 is fixedly connected with a first motor 11 for driving the threaded rod 10.

[0022] The inner wall of the cutting cover 2 is rotatably connected with a post-cut steel strip winding roller 12 and a post-cut steel strip winding roller 13. The outer wall of the cutting cover 2 is fixedly connected with two second motors 14 for driving the post-cut steel strip winding roller 12 and the post-cut steel strip winding roller 13. The post-cut steel strip winding roller 12 is closer to the cutting knife 41 than the post-cut steel strip winding roller 13. The inner top wall of the cutting cover 2 is fixedly connected with a plurality of second electric telescopic rods 15. The telescopic ends of the second electric telescopic rods 15 are fixedly connected with an extrusion frame 16. The extrusion frame 16 The inner wall is rotatably provided with squeezing rollers 17 for squeezing the steel strip. After the two second motors 14 are started, they will run at the same power. The steel strip before cutting can be limited by multiple squeezing rollers 17 to ensure the normal cutting. The remaining two squeezing rollers 17 respectively squeeze the cut steel bars and steel strips so that the cut steel bars and steel strips can be normally wound into the cut steel bar winding rollers 12 and the cut steel strip winding rollers 13, so that the cut steel bars and steel strips do not affect the normal operation of other components.

[0023] The steel strip is cut by the cutting mechanism 4, referring to Figure 1 , Figure 2 , Figures 5 to 7 The cutting mechanism 4 includes a cutting knife 41 for cutting the steel strip, a first iron core 42 is slidably provided on the side wall of the cutting knife 41, a first electromagnetic coil 43 is sleeved in the outer gap of the first iron core 42, a second iron core 44 is fixedly connected to the bottom end of the cutting knife 41, a second electromagnetic coil 45 is sleeved in the outer gap of the second iron core 44, wherein the cutting knife 41 is made of a cobalt-based alloy, has high hardness and wear resistance, can withstand high-frequency vibration and can effectively cut the steel strip; Among them, the cutting mechanism 4 also includes a first elastic telescopic rod 46 fixedly connected to the inner top wall of the cutting cover 2, the telescopic end of the first elastic telescopic rod 46 is fixedly connected to a rolling frame 47, the inner wall of the rolling frame 47 is rotatably provided with a rotating wheel 48, the inner top wall of the cutting cover 2 is fixedly connected to a first resistor plate 49, the outer wall of the first resistor plate 49 slides in contact with a first conductive sheet 410 fixedly connected to the outer wall of the telescopic end of the first elastic telescopic rod 46, the first conductive sheet 410 and the first resistor plate 49 are electrically connected to a PLC controller by signals to form a detection circuit, the first conductive sheet 410 and the first resistor plate 49 constitute a second sliding rheostat, when the first conductive sheet 410 slides downward on the first resistor plate 49, the resistance of the second sliding rheostat in the detection circuit gradually decreases, and the PLC controller is electrically connected to the second electric telescopic rod 15 by signals to form an extrusion circuit.

[0024] Among them, a cutting groove 411 is opened at the top of the cutting table 3, and the cutting knife 41 is in the cutting groove 411 to cut the steel strip, the top of the first electric telescopic rod 51 is fixedly connected to a support plate 412, the top of the support plate 412 is fixedly connected to a connecting plate 413, the outer wall of the connecting plate 413 is opened with two upper and lower symmetrical sliding grooves 414, the two upper and lower sliding grooves 414 are slidably connected with a first moving block 415, the outer wall of the first moving block 415 is fixedly connected to a moving groove 416, the inner wall of the moving groove 416 The wall is slidably connected to a second movable block 417 fixedly connected to the back of the cutting groove 411, and a support bar 418 is fixedly connected between the two first movable blocks 415 and is in sliding contact with the back of the cutting groove 411. An adaptation groove 419 is provided at the top of the support plate 412, and a slider 4110 is slidably connected to the inner wall of the adaptation groove 419. The top of the slider 4110 is fixedly connected to the first electromagnetic coil 43, and the top of the slider 4110 is fixedly connected to the first air cylinder 4111 which is airtightly slidably connected to the first iron core 42.

[0025] Among them, an adjusting groove 4112 is opened on the knife side of the cutting groove 411, and the inner wall of the adjusting groove 4112 is slidably connected with an adjusting block 4113, and the outer wall of the adjusting block 4113 is fixedly connected to the second iron core 44. A vibration groove 4114 is opened on the side wall of the cutting groove 411, and the second electromagnetic coil 45 is fixedly connected to the inner wall of the vibration groove 4114, and the inner wall of the vibration groove 4114 is fixedly connected with a second air cylinder 4115 which is airtightly slidably connected to the second iron core 44. The PLC controller is electrically connected to the first electromagnetic coil 43 and the second electromagnetic coil 45 to form a cutting circuit.

[0026] The cutting position of the cutting knife is adaptively adjusted according to the cutting condition of the steel strip by the adaptive cutting adjustment mechanism 5. Figure 4The adaptive cutting adjustment mechanism 5 includes a first electric telescopic rod 51 for pushing the cutting knife 41 to move up and down. The adaptive cutting adjustment mechanism 5 also includes a detection component 52 for detecting the cutting condition of the steel strip. The detection component 52 includes a friction block 521 for detecting the friction force of the cutting surface. The top of the friction block 521 is provided with a first sliding rheostat; The cut surface of the steel strip is inspected through the following specific structure, refer to Figure 4 The detection assembly 52 includes a second elastic telescopic rod 522 fixedly connected to the outer wall of one side of the first limit block toward the second limit plate 9, the telescopic end of the second elastic telescopic rod 522 is fixedly connected to a detection frame 523, the inner wall of the detection frame 523 is slidably connected to the friction block 521, a spring 524 is fixedly connected between the friction block 521 and the detection frame 523, and the friction block 521 is in contact with the cutting surface; Among them, the first sliding rheostat includes a second conductive sheet 525 fixedly connected to the top of the friction block 521, a vertical plate 526 fixedly connected to the top of the detection frame 523, and a second resistor plate 527 fixedly connected to the top of the vertical plate 526 in sliding contact with the top of the second conductive sheet 525. The PLC controller is electrically connected to the second conductive sheet 525, the second resistor plate 527, and the first electric telescopic rod 51 to form an adjustment loop. During the sliding process of the second conductive sheet 525 on the second resistor plate 527 toward and away from the cutting knife 41, the resistance of the first sliding rheostat gradually decreases during adjustment.

[0027] The top of the cutting hood 2 is fixedly connected with a water storage tank 18, the inner wall of the cutting hood 2 is fixedly connected with an extension plate 19, the outer wall of the extension plate 19 is provided with two symmetrical slide grooves 20, the inner wall of the slide groove 20 is slidably connected with a lifting block 21, the two lifting blocks 21 are respectively fixedly connected with a water spray plate 22 and an exhaust hood 23, the inner top wall of the cutting hood 2 is fixedly connected with a water pump 24, the water pumping end of the water pump 24 is connected with the inside of the water storage tank 18, the drainage end of the water pump 24 is connected with the water spray plate 22, the outer wall of the cutting hood 2 is fixedly connected with a collecting box 25, the inner wall of the cutting hood 2 is fixedly connected with a gas-liquid mixing pump 26, the collecting end of the gas-liquid mixing pump 26 is connected with the exhaust hood 23, the output end of the gas-liquid mixing pump 26 is connected with the collecting box 25, the PLC controller is connected with the water pump 24 and the gas-liquid mixing pump 26 by electrical signals to form a cooling circuit; The PLC controller is provided with a current detection module for detecting current.

[0028] The working principle of the present invention is as follows: First, a cold-rolled steel strip (hereinafter referred to as the steel strip) is placed on the top of the cutting table 3. Due to the thickness of the steel strip, the rotating wheel 48 and the rolling frame 47 are pushed to move upward synchronously, and then the telescopic end of the first elastic telescopic rod 46 is pushed to drive the first conductive sheet 410 to slide upward on the first resistor plate 49, thereby changing the current passing through the first sliding rheostat. Then, the current passing through the first sliding rheostat is detected by the current detection module in the PLC controller, and then the thickness of the steel strip is fed back. Then, the first motor 11 is started, and the threaded rod 10 is driven to rotate by the first motor 11. Then, the sliding block 8 is limited by the extrusion groove 6, and then the two sliding blocks 8 drive the second limiting plate 9 to squeeze the side of the steel strip to limit the steel strip. Then, the PLC controller controls the second electric telescopic rod 15 according to the calculated thickness of the steel strip to drive the squeezing frame 16 and the squeezing roller 17 to squeeze on the top of the steel strip to limit the position of the steel strip. At the same time, the cutting knife 41 is temporarily started to run, and then the steel strip is cut for a distance (by manually pushing the steel strip), and then the cut steel strip is wound on the cut steel strip winding roller 12, and the remaining steel strip is wound on the cut steel strip winding roller 13, and then the formal cutting begins.

[0029] First, the second motor 14 is started, and the two second motors 14 are used to drive the cut steel bar winding roller 12 and the cut steel strip winding roller 13 to rotate respectively, so as to wind up the cut steel strip and the cut steel bar, and then pull the whole steel strip forward. At the same time, according to the thickness of the steel strip detected by the PLC controller, the current passed into the first electromagnetic coil 43 and the second electromagnetic coil 45 is controlled. When the first electromagnetic coil 43 and the second electromagnetic coil 45 are connected with alternating current, the alternating magnetic field generated by the first electromagnetic coil 43 and the second electromagnetic coil 45 will cause the first iron core 42 and the second iron core 44 to be periodically magnetized. Due to the hysteresis effect and eddy current effect, induced current is generated inside the first iron core 42 and the second iron core 44 and is affected by the Lorentz force, resulting in the first iron core 42 and the second iron core 44 being subjected to periodic mechanical stress, thereby generating high-frequency vibration. After preliminary testing, the left and right, up and down high-frequency vibrations of the cutting knife 41 can be well matched without affecting each other.

[0030] The high-frequency vibration is transmitted to the cutting knife 41 through the iron core, so that the cutting knife 41 vibrates up and down and left and right at high frequency to cut the steel strip. In the process of the cutting knife 41 vibrating up and down, the cutting knife 41 drives the second moving block 417, the moving groove 416, and the first moving block 415 to slide in the upper and lower sliding grooves 414, and the upper and lower sliding grooves 414 are limited to ensure the normal path of the up and down vibration of the cutting knife 41. Then, in the process of the cutting knife 41 vibrating left and right, the cutting knife 41 drives the second moving block 417 to slide in the moving groove 416, and the moving groove 416 is limited to ensure the normal path of the left and right vibration of the cutting knife 41. By vibrating up and down at high frequency, the cutting blade 41 moves with a small amplitude when in contact with the material, reducing the force required for each cutting, thereby reducing the overall cutting force. The up and down vibration makes the cutting amount of each cutting very small, reducing burrs and unevenness, and making the cutting surface smoother. This fine cutting method helps to reduce cutting marks and improve the uniformity of the cutting surface. The left and right vibration of the cutting knife 41 can speed up the material removal speed, especially when the cutting path is long. The left and right vibration can help the tool complete the cutting task more quickly. The left and right vibration helps to quickly remove the debris and residues generated during the cutting process and keep the cutting area clean. If there is no vibration, the chips may accumulate between the cutting knife 41 and the steel belt. When the chips accumulate, the newly generated chips will be in close contact with the steel belt and the cutting knife 41 under pressure, and the power generated by the left and right vibration can throw the chips away from the cutting area, avoiding the accumulation of chips between the cutting knife 41 and the steel belt, thereby reducing the chance of adhesion and When cutting steel strips, chips may originally be generated in a continuous manner. Vibration causes periodic external force interference during the formation of chips, making them more likely to break into smaller fragments. Compared with continuous chips, smaller chip fragments have reduced contact area and contact time with the tool and steel strip. For example, continuous chips may have a long contact length along the tool surface, and are prone to adhesion due to high temperature and high pressure during this contact process, while small fragments are less likely to produce this situation. At the same time, vibration can prevent chips from forming a stable adhesion layer on the tool surface, because the chips are carried away by the vibration force before they have time to adhere stably.

[0031] The reasons for adaptively adjusting the cutting frequency according to the thickness of the steel strip are: When cutting thinner cold-rolled steel strips, the material is relatively fragile. If the vibration frequency is too high, the cutting knife 41 vibrates too violently up and down or left and right, which may cause excessive impact on the steel strip. This excessive impact will cause additional deformation of the steel strip and may even cause the steel strip to break or crack during the cutting process. For example, for a steel strip with a thickness of only 0.1-0.2mm, a vibration frequency that is too high may cause the steel strip to be bent repeatedly, causing its mechanical properties to deteriorate. Therefore, for thin steel strips, it is usually necessary to appropriately reduce the vibration frequency and cut in a more gentle manner to ensure the cutting quality of the steel strip; on the other hand, the chips generated when cutting thin steel strips are relatively small and easy to remove. The lower vibration frequency can effectively remove the chips from the cutting area to avoid chip accumulation and material adhesion. Because the amount of chips is small, high-frequency vibration is not required to quickly clean the chips; For thicker steel strip cutting, such as steel strip with a thickness greater than 2 mm, it is more difficult to cut because the thick steel strip has higher strength and toughness and requires greater cutting force to cut. A higher vibration frequency can enable the cutting knife 41 to perform more impact cuts on the steel strip per unit time, which helps to improve the cutting efficiency. At the same time, the amount of chips generated by thick steel strip cutting is large, and high-frequency vibration can remove a large amount of chips from the cutting area more quickly. If the vibration frequency is too low, the chips may accumulate in the cutting area, hindering the cutting process and increasing the risk of material adhesion; Furthermore, since the cutting knife 41 cuts the steel strip for a long time, the cutting knife 41 will become blunt. When the cutting knife 41 becomes blunt, the cutting surface will become rough, and even burrs will appear on the edge of the steel strip after cutting. Therefore, it is necessary to detect the quality of the cutting knife 41 in real time to adjust the cutting state of the cutting knife 41 in real time. The second elastic telescopic rod 522 drives the detection frame 523 and the friction block 521 to move forward, so that the friction block 521 is tightly attached to the cutting surface of the cut steel strip. Since the cutting surface of the cut steel strip is relatively rough, the friction block 521 is driven to move forward, and then the second conductive sheet 525 is driven to move forward on the second resistor plate 527. As the cutting knife 41 wears, the cutting surface of the steel strip gradually becomes rough, which increases the friction between the friction block 521 and the cutting surface of the steel strip, so that the friction block 521 gradually drives the second conductive sheet 525 to move forward on the second resistor plate 527, thereby changing the current passing through the second sliding rheostat. Then, the current detection module in the PLC controller detects the current passing through the second sliding rheostat. When the detected current is too large (the current reaches the threshold value of the pre-tested cutting knife 41 that is about to be replaced), the PLC controller controls the first electric telescopic rod 51 to push the support plate 412 and the connecting plate 413 to move upward synchronously, thereby driving the cutting knife 41 to move upward, and then changing the cutting position to ensure the cutting effect of the steel strip.

[0032] During the cutting process, the clean water in the water tank 18 is pumped out by the water pump 24, and then the clean water is sprayed on the surface of the cutting knife 41 through the water spray plate 22 to cool the cutting knife 41 and the cutting part. At the same time, the cooled clean water and impurities are pumped out by the exhaust hood 23 through the gas-liquid mixing pump 26 and then discharged into the collection box 25.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cold-rolled steel strip slitting equipment, characterized in that: include: A cutting mechanism (4), the cutting mechanism (4) comprising a cutting knife (41) for cutting a steel strip, a first iron core (42) being slidably disposed on a side wall of the cutting knife (41), a first electromagnetic coil (43) being sleeved in an outer gap of the first iron core (42), a second iron core (44) being fixedly connected to a bottom end of the cutting knife (41), and a second electromagnetic coil (45) being sleeved in an outer gap of the second iron core (44); An adaptive cutting adjustment mechanism (5), the adaptive cutting adjustment mechanism (5) comprising a first electric telescopic rod (51) for pushing the cutting knife (41) to move up and down, the adaptive cutting adjustment mechanism (5) further comprising a detection component (52) for detecting the cutting condition of the steel strip, the detection component (52) comprising a friction block (521) for detecting the friction force of the cutting surface, the top end of the friction block (521) being provided with a first sliding rheostat.

2. The cold-rolled steel strip slitting equipment according to claim 1, characterized in that: The invention also comprises an operating panel (1), the top of the operating panel (1) being fixedly connected to a cutting cover (2), the inner wall of the cutting cover (2) being fixedly connected to a cutting table (3), the top of the cutting table (3) being provided with two symmetrical extrusion grooves (6), the top of the cutting table (3) being fixedly connected to a first limit plate (7), the two extrusion grooves (6) being slidably connected to sliding blocks (8), the tops of the two sliding blocks (8) being fixedly connected to a second limit plate (9), a threaded rod (10) being rotatably arranged in one of the extrusion grooves (6), and the threaded rod (10) threadably passes through one of the sliding blocks (8), and the outer wall of the cutting cover (2) being fixedly connected to a first motor (11) for driving the threaded rod (10).

3. The cold-rolled steel strip slitting equipment according to claim 2, characterized in that: The inner wall of the cutting cover (2) is rotatably connected to a post-cut steel bar winding roller (12) and a post-cut steel strip winding roller (13); the outer wall of the cutting cover (2) is fixedly connected to two second motors (14) for driving the post-cut steel bar winding roller (12) and the post-cut steel strip winding roller (13); the post-cut steel bar winding roller (12) is closer to the cutting knife (41) than the post-cut steel strip winding roller (13); the inner top wall of the cutting cover (2) is fixedly connected to a plurality of second electric telescopic rods (15); the telescopic ends of the second electric telescopic rods (15) are fixedly connected to an extrusion frame (16); the inner wall of the extrusion frame (16) is rotatably provided with an extrusion roller (17) for extruding the steel strip.

4. The cold-rolled steel strip slitting equipment according to claim 2, characterized in that: The cutting mechanism (4) further comprises a first elastic telescopic rod (46) fixedly connected to the inner top wall of the cutting cover (2); the telescopic end of the first elastic telescopic rod (46) is fixedly connected to a rolling frame (47); the inner wall of the rolling frame (47) is rotatably provided with a rotating wheel (48); the inner top wall of the cutting cover (2) is fixedly connected to a first resistor plate (49); the outer wall of the first resistor plate (49) is in sliding contact with a first conductive sheet (410) fixedly connected to the outer wall of the telescopic end of the first elastic telescopic rod (46); the first conductive sheet (410) and the first resistor plate (49) are electrically connected to a PLC controller to form a detection circuit; the first conductive sheet (410) and the first resistor plate (49) constitute a second sliding rheostat; when the first conductive sheet (410) slides downward on the first resistor plate (49), the resistance of the second sliding rheostat in the detection circuit gradually decreases; the PLC controller is electrically connected to the second electric telescopic rod (15) to form an extrusion circuit.

5. The cold-rolled steel strip slitting equipment according to claim 4, characterized in that: The cutting table (3) has a cutting groove (411) at the top, and the cutting knife (41) is in the cutting groove (411) to cut the steel strip. The top of the first electric telescopic rod (51) is fixedly connected to a support plate (412). The top of the support plate (412) is fixedly connected to a connecting plate (413). The outer wall of the connecting plate (413) has two upper and lower symmetrical sliding grooves (414). The two upper and lower sliding grooves (414) are both slidably connected to a first moving block (415). The outer wall of the first moving block (415) is fixedly connected to a moving groove (416). The moving groove (416) The inner wall of the support plate (412) is slidably connected to a second moving block (417) fixedly connected to the back of the cutting groove (411); a support bar (418) is fixedly connected between the two first moving blocks (415) and is in sliding contact with the back of the cutting groove (411); an adaption groove (419) is provided at the top of the support plate (412); a slider (4110) is slidably connected to the inner wall of the adaption groove (419); the top of the slider (4110) is fixedly connected to the first electromagnetic coil (43); and the top of the slider (4110) is fixedly connected to a first air cylinder (4111) airtightly slidably connected to the first iron core (42).

6. The cold-rolled steel strip slitting equipment according to claim 5, characterized in that: The cutting groove (411) is provided with an adjustment groove (4112) on the blade side, an adjustment block (4113) is slidably connected to the inner wall of the adjustment groove (4112), an outer wall of the adjustment block (4113) is fixedly connected to the second iron core (44), a vibration groove (4114) is provided on the side wall of the cutting groove (411), a second electromagnetic coil (45) is fixedly connected to the inner wall of the vibration groove (4114), a second air cylinder (4115) airtightly slidably connected to the second iron core (44) is fixedly connected to the inner wall of the vibration groove (4114), and the PLC controller is electrically connected to the first electromagnetic coil (43) and the second electromagnetic coil (45) to form a cutting circuit.

7. The cold-rolled steel strip slitting equipment according to claim 4, characterized in that: The detection assembly (52) comprises a second elastic telescopic rod (522) fixedly connected to an outer wall of a side of the first limit block facing the second limit plate (9); the telescopic end of the second elastic telescopic rod (522) is fixedly connected to a detection frame (523); the inner wall of the detection frame (523) is slidably connected to a friction block (521); a spring (524) is fixedly connected between the friction block (521) and the detection frame (523); and the friction block (521) is in contact with the cutting surface; The first sliding rheostat comprises a second conductive sheet (525) fixedly connected to the top of the friction block (521); a vertical plate (526) is fixedly connected to the top of the detection frame (523); a second resistor plate (527) is fixedly connected to the top of the vertical plate (526) and is in sliding contact with the top of the second conductive sheet (525); the PLC controller is electrically signal-connected to the second conductive sheet (525), the second resistor plate (527) and the first electric telescopic rod (51) to form a regulation loop; and during the sliding process of the second conductive sheet (525) on the second resistor plate (527) away from the cutting knife (41), the resistance of the first sliding rheostat gradually decreases during regulation.

8. The cold-rolled steel strip slitting equipment according to claim 4, characterized in that: The top of the cutting cover (2) is fixedly connected to a water storage tank (18), the inner wall of the cutting cover (2) is fixedly connected to an extension plate (19), the outer wall of the extension plate (19) is provided with two symmetrical slide grooves (20), the inner wall of the slide groove (20) is slidably connected to a lifting block (21), the two lifting blocks (21) are respectively fixedly connected to a water spray plate (22) and an exhaust cover (23), the inner top wall of the cutting cover (2) is fixedly connected to a water pump (24), the water pumping end of the water pump (24) is connected to the water storage tank ( 18) are internally connected, the drainage end of the water pump (24) is connected to the water spray plate (22), the outer wall of the cutting hood (2) is fixedly connected to a collecting box (25), the inner wall of the cutting hood (2) is fixedly connected to a gas-liquid mixing pump (26), the collecting end of the gas-liquid mixing pump (26) is connected to the exhaust hood (23), the output end of the gas-liquid mixing pump (26) is connected to the collecting box (25), and the PLC controller is electrically connected to the water pump (24) and the gas-liquid mixing pump (26) to form a cooling circuit.

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