Flattening and cutting device for hot-rolled coil plate machining

Abstract

The invention relates to the technical field of metal processing, and provides a decoiler cutting device for hot-rolled coil plate processing, which comprises a workbench and a control panel, a decoiler machine is mounted on one side of the workbench, a moving frame is mounted on one side of the decoiler machine, a cutting frame is mounted on one side of the moving frame, and a stress relief structure is arranged at the top end of the moving frame. Through cooperative use of the fixing columns and the hinge rods, the knocking rods are driven to knock the edge of the hot-rolled coil plate in a reciprocating mode, periodic dynamic stress vibration loads can be applied to the edge of the coil plate through continuous knocking vibration, and after dynamic stress and edge residual stress static stress are superposed, the edge of the coil plate is subjected to dynamic stress vibration; the stress state of the local area exceeds the yield strength threshold value of the material, microcosmic plastic deformation is triggered, and the deformation enables the originally locked residual stress to be released, so that the residual stress at the edge of the rolled plate is eliminated, the cutting quality is not easily influenced by the residual stress at the edge in the subsequent cutting process, and the cutting quality is improved. Therefore, the effect of eliminating stress is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal processing, in particular to a flattening and cutting device for hot-rolled coil processing. Background Art

[0002] Hot rolled coil is an important steel product. It is made from slab (mainly continuous casting slab) through heating, rolling and other processes. It is widely used in the construction field to manufacture steel beams, steel columns, steel sheet piles, etc.; in the machinery manufacturing industry, it is used to manufacture machine tool bodies, crane frames, etc.; in the automotive industry, it can be used to manufacture body structures and chassis components; it can also be used for hull structures in shipbuilding and the shells of refrigerators and washing machines in home appliance manufacturing. During the processing of hot rolled coil, it also needs to be cut flat.

[0003] To this end, the patent with publication number CN118905665B discloses a flattening and cutting device for hot-rolled coils, comprising a flattening machine, a shearing machine, a conveying mechanism, and a travel calibration mechanism, wherein the travel calibration mechanism comprises a calibration support box, a test run assembly is provided on the calibration support box, the test run assembly comprises a test run rod which is provided on the outer wall of the calibration support box, the test run rod is slidably connected to the outer wall of the calibration support box, both sides of the test run rod are fixedly connected with a driving elastic rope, and a positioning ring which is fixedly connected to the test run rod is sleeved on the test run rod, and the travel calibration mechanism is provided so that the travel length of the plate can be verified before cutting, and the plate will be cut only after the verification is passed, thereby ensuring that the cut steel plate strictly meets the requirements, thereby improving the cutting accuracy, and effectively avoiding the adverse consequences such as material waste and unqualified products due to deviation in the travel length of the plate;

[0004] The above technology sets up a travel verification mechanism so that the travel verification mechanism can verify the travel length of the plate before cutting. The plate will be cut only after the verification is passed, thereby ensuring that the cut steel plate strictly meets the requirements, thereby improving the cutting accuracy. However, there are still some problems in the flattening of the hot-rolled coil. During the flattening process of the coil, when the coil passes through the straightening roller of the flattening machine, the edge is subjected to bending and stretching (especially thin-gauge plates), resulting in plastic deformation differences, resulting in higher edge stress than the center area. As a result, the edge stress is released during the subsequent cutting process, which will cause local deformation of the plate after cutting (such as warping, wavy bending). Therefore, a flattening cutting device for hot-rolled coil processing is needed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a hot-rolled coil flattening cutting device for processing, so as to solve the defect of the existing hot-rolled coil flattening cutting device for processing hot-rolled coils, that is, it is inconvenient to eliminate the stress at the edge of the hot-rolled coil after flattening the hot-rolled coil, which affects the subsequent cutting process.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a flattening and cutting device for hot-rolled coil processing, comprising a workbench and a control panel; a flattening machine is installed on one side of the workbench; a movable frame is installed on one side of the flattening machine; a cutting frame is installed on one side of the movable frame; and a stress relief structure is provided on the top of the movable frame;

[0007] The stress relief structure includes a fixed box, which is installed on the top of the mobile frame, a bidirectional screw is installed inside the fixed box, a servo motor is installed at one end of the bidirectional screw, screw sleeves are installed on both sides of both ends of the bidirectional screw, a fixed plate is installed at the bottom end of the screw sleeve, a connecting plate is fixed on one side of the fixed plate, a guide roller is movably installed at the bottom end of the connecting plate, a first gear is installed at the top of the guide roller, a second gear is installed on one side of the first gear, a first bevel gear is installed at the top of the second gear, a second bevel gear is installed on one side of the first bevel gear, a rotating disk is installed on one side of the second bevel gear, and a knocking rod is installed at the bottom end of one side of the rotating disk.

[0008] Preferably, the top end of the knocking rod is hinged with a hinged rod, the top end of the hinged rod is hinged with a fixed column, one end of the fixed column is fixed to one side of the rotating disk, a guide sleeve is installed on the outside of the knocking rod, one side of the guide sleeve is fixed to one side of the connecting plate, and a rubber pad is installed at the bottom end of the guide sleeve.

[0009] Preferably, an upper slitting roller is installed at the top of the slitting machine, a third cylinder is installed at the top of the upper slitting roller, a lower slitting roller is installed at the bottom of the upper slitting roller, a fourth cylinder is provided at the top of the cutting frame, a cutting knife is installed at the bottom of the fourth cylinder, and a cutting seat is installed at the bottom end of the cutting frame.

[0010] Preferably, a tensioning structure is provided at the top of the workbench, and the tensioning structure includes a fixed frame, the fixed frame is installed on one side of the workbench, a second cylinder is installed on one side of the fixed frame, and a movable rotating shaft is installed at the middle position of the top of the workbench, and one end of the movable rotating shaft is movably connected to one end of the second cylinder.

[0011] Preferably, a disc is installed on one side of the top of the workbench, a guide groove is provided inside the disc, a guide block is installed inside the guide groove, a tensioning sleeve is fixed on one side of the guide block, a tensioning block is installed on the inner side of the tensioning sleeve, an extrusion block is installed on the outer side of the movable rotating shaft, a connecting disc is installed on the outer side of one end of the movable rotating shaft, a limiting strip is installed inside the connecting disc, and a limiting groove is provided on the outer side of one end of the movable rotating shaft.

[0012] Preferably, the limiting strips are provided in multiple groups, and the limiting strips and the limiting grooves form a limiting structure.

[0013] Preferably, a mounting bracket is installed on the top of the workbench, a first cylinder is installed on the top of the mounting bracket, a limit plate is installed on the bottom end of the first cylinder, a screw rod is installed inside the workbench, a wire sleeve is installed on the outside of the screw rod, a connecting seat is installed on the top of the wire sleeve, guide plates are installed on both sides of the bottom end of the connecting seat, a height adjustment cylinder is installed on the top of the connecting seat, and a placement seat is installed on the top of the height adjustment cylinder.

[0014] Preferably, a clamping structure is provided on both sides of the cutting knife, and the clamping structure includes a connecting frame, the connecting frame is installed on both sides of the cutting knife, an extrusion plate is fixed on one side of the connecting frame, and a placement frame is fixed on both sides of the inside of the cutting frame, a placement groove is opened inside the placement frame, a clamping block is installed inside the placement groove, a spring is installed on one side of the clamping block, and a movable groove is opened inside the placement groove position at the bottom end of the cutting frame.

[0015] Preferably, one side of the spring is fixed to one side of the interior of the placement slot, and the spring and one side of the interior of the placement slot form a telescopic structure.

[0016] Preferably, two groups of clamping blocks are provided, and the two groups of clamping blocks are symmetrically distributed inside the cutting frame.

[0017] The present invention provides a hot-rolled coil cutting device, which has the following advantages:

[0018] By setting up the stress relief structure, when the hot rolled coil is flattened and moved on the moving frame, the two sets of guide rollers can be driven by the cooperation of the bidirectional screw and the screw sleeve to clamp and guide the hot rolled coil, making the hot rolled coil more stable during the movement.

[0019] Furthermore, due to the movable connection between the guide roller and the connecting plate, when the hot-rolled coil is clamped and guided, the guide roller will be rotated by the hot-rolled coil. At this time, the rotating guide roller will drive the rotating disk to rotate through the cooperation of the first bevel gear and the second bevel gear, thereby driving the knocking rod to knock the edge of the hot-rolled coil back and forth through the cooperation of the fixed column and the hinged rod. The continuous knocking vibration will apply periodic dynamic stress vibration load to the edge of the coil. When the dynamic stress is superimposed on the static stress of the residual stress at the edge, the stress state of the local area exceeds the yield strength threshold of the material, causing micro-plastic deformation. This deformation releases the originally locked residual stress, promotes the stress redistribution and tends to be uniform, thereby eliminating the residual stress at the edge of the coil, making it less likely to affect the cutting quality due to the residual edge stress during the subsequent cutting process, thereby completing the stress elimination effect, and reducing the cost of use without the need for an additional power source.

[0020] By providing a tensioning structure, when processing the hot-rolled coil, the screw rod and the wire sleeve can be used in conjunction to drive the placement seat to move to one side, thereby quickly loading the hot-rolled coil, making it more convenient to load the hot-rolled coil;

[0021] Furthermore, the second cylinder drives the movable rotating shaft to contract to one side, so that the extrusion block on the surface of the movable rotating shaft squeezes the tensioning block and moves upward to open the tensioning sleeve. By using multiple sets of tensioning sleeves, the inner coil of the hot-rolled coil can be tensioned. By tensioning the inner coil, the layers of the coil are tightly fitted together, reducing radial movement during uncoiling and ensuring feeding accuracy. When uncoiling, the first cylinder is started to push the limit plate downward so that its bottom end fits against the outside of the hot-rolled coil. Through the tensioning limits on both the inside and outside, the hot-rolled coil is more stable during loading and will not suddenly disperse, thereby completing the tensioning work. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention when viewed from above;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the tensioning structure of the present invention;

[0025] Figure 4 It is a schematic diagram of a partial cross-section of the tensioning structure of the present invention in a front view of a three-dimensional structure;

[0026] Figure 5 This is a schematic diagram of a three-dimensional structure of a tensioning structure according to the present invention facing a local explosion;

[0027] Figure 6This is a schematic diagram of a partially exploded three-dimensional structure of the tensioning structure of the present invention from a side view;

[0028] Figure 7 This is a schematic diagram of a three-dimensional structure of a tensioning structure of the present invention in a front view and section;

[0029] Figure 8 This is a schematic diagram of the three-dimensional structure of the slitting machine of the present invention;

[0030] Figure 9 It is a rear view three-dimensional structural diagram of the slitting machine of the present invention;

[0031] Figure 10 It is a schematic diagram of the three-dimensional structure of the stress relief structure of the present invention;

[0032] Figure 11 For the present invention Figure 10 A in the middle is a partial enlarged schematic diagram of the three-dimensional structure;

[0033] Figure 12 This is a schematic diagram of the exploded three-dimensional structure of the stress relief structure of the present invention;

[0034] Figure 13 It is a schematic diagram of a three-dimensional structure of a partial cross section of the stress relief structure of the present invention;

[0035] Figure 14 A schematic diagram of a three-dimensional side view of the stress relief structure of the present invention;

[0036] Figure 15 This is a schematic diagram of the three-dimensional structure of the clamping structure of the present invention;

[0037] Figure 16 A schematic diagram of a three-dimensional structure of a partial cross-section of a side view of the clamping structure of the present invention;

[0038] Figure 17 For the present invention Figure 16 A partial enlarged schematic diagram of the three-dimensional structure at point B in the middle.

[0039] Explanation of reference numerals in the figures: 1. workbench; 2. tensioning structure; 201. fixed frame; 202. mounting frame; 203. first cylinder; 204. limiting plate; 205. second cylinder; 206. movable rotating shaft; 207. guide block; 208. guide groove; 209. tensioning sleeve; 2010. extrusion block; 2011. tensioning block; 2012. connecting disk; 2013. limiting strip; 2014. placing seat; 2015. wire sleeve; 2016. screw rod; 2017. guide plate; 2018. height adjustment cylinder; 2019. connecting seat; 2020. disc; 2021. limiting groove; 3. leveling machine; 4. third cylinder; 5. upper leveling roller; 6. movable frame; 7. cutting frame; 8. clamping structure; 801. extrusion plate; 802, movable groove; 803, connecting frame; 804, clamping block; 805, spring; 806, placement frame; 807, placement groove; 9, lower leveling roller; 10, stress relief structure; 1001, servo motor; 1002, fixed box; 1003, bidirectional screw; 1004, screw sleeve; 1005, connecting plate; 1006, guide roller; 1007, first gear; 1008, second gear; 1009, first bevel gear; 1010, second bevel gear; 1011, rotating disk; 1012, fixed column; 1013, hinged rod; 1014, knocking rod; 1015, guide sleeve; 1016, rubber pad; 1017, fixed plate; 11, cutting knife; 12, cutting seat; 13, control panel; 14, fourth cylinder. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0041] See also Figures 1-17 The present invention provides a flattening and cutting device for hot-rolled coil processing, which includes a workbench 1 and a control panel 13. A flattening machine 3 is installed on one side of the workbench 1, a movable frame 6 is installed on one side of the movable frame 6, a cutting frame 7 is installed on one side of the movable frame 6, and a stress relief structure 10 is provided at the top of the movable frame 6. An upper flattening roller 5 is installed at the top of the flattening machine 3, a third cylinder 4 is installed at the top of the upper flattening roller 5, and a lower flattening roller 9 is installed at the bottom of the upper flattening roller 5. A fourth cylinder 14 is provided at the top of the cutting frame 7, a cutting knife 11 is installed at the bottom end of the fourth cylinder 14, and a cutting seat 12 is installed at the bottom end of the cutting frame 7.

[0042] A tensioning structure 2 is provided at the top of the workbench 1. The tensioning structure 2 includes a fixed frame 201, which is installed on one side of the workbench 1. A second cylinder 205 is installed on one side of the fixed frame 201. A movable rotating shaft 206 is installed at the middle position of the top of the workbench 1. One end of the movable rotating shaft 206 is movably connected to one end of the second cylinder 205. A disc 2020 is installed on one side of the top of the workbench 1. A guide groove 208 is provided inside the disc 2020. A guide block 207 is installed inside the guide groove 208. A tensioning sleeve 209 is fixed on one side of the guide block 207. A tensioning block 2011 is installed on the inner side of the tensioning sleeve 209. An extrusion block 2010 is installed on the outer side of the movable rotating shaft 206. A connecting disc 2012 is installed on the outer side of one end of the movable rotating shaft 206. A limit strip 2013 is installed inside 2012, and a limit slot 2021 is provided on the outer side of one end of the movable rotating shaft 206. There are multiple groups of limit strips 2013, and a limit structure is formed between the multiple groups of limit strips 2013 and the limit slot 2021. A mounting frame 202 is installed on the top of the workbench 1, and a first cylinder 203 is installed on the top of the mounting frame 202. A limit plate 204 is installed on the bottom end of the first cylinder 203. A screw rod 2016 is installed inside the workbench 1, and a wire sleeve 2015 is installed on the outer side of the screw rod 2016. A connecting seat 2019 is installed on the top of the wire sleeve 2015, and guide plates 2017 are installed on both sides of the bottom end of the connecting seat 2019. A height adjustment cylinder 2018 is installed on the top of the connecting seat 2019, and a placement seat 2014 is installed on the top of the height adjustment cylinder 2018.

[0043] Reference Figure 1-Figure 7 As shown: before the hot-rolled coil is leveled, the staff places the hot-rolled coil on the top of the placement seat 2014 by a crane or a forklift. After the placement is completed, the external power supply starts the drive motor to drive the screw rod 2016 to rotate. When the screw rod 2016 rotates, it can drive the placement seat 2014 to move to one side through the cooperation with the wire sleeve 2015, and move the hot-rolled coil to the outside of the tensioning sleeve 209, thereby completing the loading of the hot-rolled coil, making it more convenient to load the material. After the loading is completed, the connecting seat 219 is restored to its original position to prepare for the next loading.

[0044] After the hot rolled coil is loaded, the second cylinder 205 is started to drive the movable rotating shaft 206 to shrink to one side. When the movable rotating shaft 206 shrinks to one side, it drives the extrusion block 2010 to move to one side. Since the contact surface of the extrusion block 2010 and the tensioning block 2011 is provided with a matching slope, when the extrusion block 2010 moves to one side, the tensioning block 2011 is lifted up. When the tensioning block 2011 is lifted up, the guide block 207 on one side of the tensioning sleeve 209 moves inside the guide groove 208, thereby tightening the tensioning block 2011. The sleeve 209 is guided to open the tensioning sleeve 209. Since there are multiple sets of tensioning sleeves 209, the inner diameter of the hot-rolled coil can be tensioned. By tensioning the inner coil, the coil layers are closely fitted together, reducing radial movement during uncoiling and ensuring feeding accuracy. When uncoiling, the first cylinder 203 is started to push the limit plate 204 downward so that its bottom end is fitted to the outside of the hot-rolled coil. Through the tensioning and limiting on both sides of the inside and outside, the hot-rolled coil is more stable during loading and will not suddenly spread out.

[0045] The stress relief structure 10 includes a fixed box 1002, which is mounted on the top of the mobile frame 6. A bidirectional screw 1003 is installed inside the fixed box 1002, and a servo motor 1001 is installed at one end of the bidirectional screw 1003. Screw sleeves 1004 are installed on both sides of both ends of the bidirectional screw 1003. A fixed plate 1017 is installed at the bottom end of the screw sleeve 1004. A connecting plate 1005 is fixed to one side of the fixed plate 1017. A guide roller 1006 is movably installed at the bottom end of the connecting plate 1005. A first gear 1007 is installed at the top of the guide roller 1006. A second gear 1008 is installed on one side of the first gear 1007. The top of the second gear 1008 is fixed to the bottom end of the second gear 1008. A first bevel gear 1009 is installed at the end, a second bevel gear 1010 is installed on one side of the first bevel gear 1009, a rotating disk 1011 is installed on one side of the second bevel gear 1010, a knocking rod 1014 is installed at the bottom end of one side of the rotating disk 1011, the top of the knocking rod 1014 is hinged with a hinged rod 1013, the top of the hinged rod 1013 is hinged with a fixed column 1012, one end of the fixed column 1012 is fixed to one side of the rotating disk 1011, a guide sleeve 1015 is installed on the outside of the knocking rod 1014, one side of the guide sleeve 1015 is fixed to one side of the connecting plate 1005, and a rubber pad 1016 is installed at the bottom end of the guide sleeve 1015.

[0046] Reference Figure 10-14As shown: when flattening the hot-rolled coil, one end of the hot-rolled coil is pulled into the interior of the flattening machine 3, and then the third cylinder 4 is started to push the upper flattening roller 5 to move downward, so as to adjust the distance between the upper flattening roller 5 and the lower flattening roller 9 according to the thickness of the hot-rolled coil. After the adjustment is completed, the motor on the fixed frame 201 is started. After the motor is started, the connecting disk 2012 is driven to rotate through the belt. When the connecting disk 2012 rotates, it drives the movable rotating shaft 206 to rotate through the cooperation of the limit bar 2013 and the limit groove 2021. Since one end of the movable rotating shaft 206 is movably connected to one end of the second cylinder 205, it can The rotating shaft 206 rotates and drives the hot rolled coil to be fed. When feeding, the upper flattening roller 5 and the lower flattening roller 9 are started synchronously, so that the hot rolled coil is flattened by multiple sets of flattening rollers. The flattened hot rolled coil moves to the top of the mobile rack 6. At this time, the servo motor 1001 is started. After starting, the servo motor 1001 drives the bidirectional screw 1003 to rotate. When the bidirectional screw 1003 rotates, it drives the two sets of screw sleeves 1004 to move to the middle position. When the screw sleeve 1004 moves, it drives the two sets of fixed plates 1017 to move to the middle position, so that the two sets of guide rollers 10 06 fits both sides of the rolled plate after opening and provides a centering guide to it so that the rolled plate will not be offset in the process of moving, thereby completing the clamping and guiding work. The guide roller 1006 and the connecting plate 1005 are movably connected. In the process of clamping and guiding the rolled plate, it will rotate with the movement of the rolled plate, so as not to affect the movement of the rolled plate. The guide roller 1006 will drive the first gear 1007 to rotate during the rotation process. The first gear 1007 will drive the first bevel gear 1009 to rotate through the cooperation with the second gear 1008 when rotating. The first bevel gear 1009 is rotated by the first bevel gear 1009. When 009 rotates, it drives the rotating disk 1011 to rotate through cooperation with the second bevel gear 1010. When the rotating disk 1011 rotates, it drives the knocking rod 1014 to move back and forth inside the movable guide sleeve 1015 through the cooperation of the fixed column 1012 and the hinge rod 1013, so that the bottom end of the knocking rod 1014 continuously knocks on the edge of the roll. The continuous knocking vibration will apply periodic dynamic stress vibration load to the edge of the roll. When the dynamic stress is superimposed on the static stress of the residual stress at the edge, the stress state of the local area exceeds the yield strength threshold of the material, causing micro plastic deformation. This deformation releases the originally locked residual stress, promotes the stress redistribution and tends to be uniform, thereby eliminating the residual stress at the edge of the roll, making it less likely to affect the cutting quality due to the residual edge stress during the subsequent cutting process.

[0047] A clamping structure 8 is provided on both sides of the cutting knife 11, and the clamping structure 8 includes a connecting frame 803, which is installed on both sides of the cutting knife 11, and an extrusion plate 801 is fixed on one side of the connecting frame 803, and a placement frame 806 is fixed on both sides of the inside of the cutting frame 7, and a placement groove 807 is provided inside the placement frame 806, and a clamping block 804 is installed inside the placement groove 807, and a spring 805 is installed on one side of the clamping block 804, and a movable groove 802 is provided inside the placement groove 807 at the bottom end of the cutting frame 7, and one side of the spring 805 is fixed to one side of the inside of the placement groove 807, and the spring 805 and one side of the inside of the placement groove 807 form a telescopic structure, and two groups of clamping blocks 804 are provided, and the two groups of clamping blocks 804 are symmetrically distributed inside the cutting frame 7.

[0048] Reference Figure 15-17 As shown: when the coil moves to the bottom end of the cutting frame 7 for cutting, before the cutting frame 7 is processed, a linear grating ruler with an accuracy of ±0.01mm is installed at the rear of the cutting frame 7 to scan the edge of the plate in real time and feedback the actual length through the photoelectric signal. When the cutting frame 7 needs to be cut, the flattening work and the rotation of the hot-rolled coil are stopped, and the fourth cylinder 14 is started to push the cutting knife 11 downward to cut the coil. When the cutting knife 11 moves downward, it will drive the connecting frame 803 to move downward. When the connecting frame 803 moves downward, it will drive the extrusion plate 801 to move downward. Since the bottom end of the extrusion plate 801 is set with the clamp The holding block 804 has a matching inclined surface on one side, so when the connecting frame 803 moves downward, it will drive the extrusion plate 801 to move downward and squeeze the clamping block 804 to move to one side, so that one side of the clamping block 804 is in contact with both sides of the coil to clamp it. When the clamping block 804 moves to one side, it will pull the spring 805 for stretching. When the clamping block 804 completes the clamping, as the cutting knife 11 falls, the cutting work of the coil is completed. When the cutting knife 11 moves upward, the clamping block 804 will return to its original position under the pull-back of the spring 805, and perform the next clamping, thereby completing the flat cutting of the hot-rolled coil.

[0049] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hot rolled coil cutting device, characterized in that: The invention comprises a workbench (1) and a control panel (13); a leveling machine (3) is installed on one side of the workbench (1); a movable frame (6) is installed on one side of the leveling machine (3); a cutting frame (7) is installed on one side of the movable frame (6); and a stress relief structure (10) is provided at the top end of the movable frame (6); The stress relief structure (10) comprises a fixed box (1002), the fixed box (1002) being mounted on the top of the mobile frame (6), a bidirectional screw (1003) being mounted inside the fixed box (1002), a servo motor (1001) being mounted on one end of the bidirectional screw (1003), screw sleeves (1004) being mounted on both sides of both ends of the bidirectional screw (1003), a fixed plate (1017) being mounted on the bottom end of the screw sleeve (1004), a connecting plate (1005) being fixed on one side of the fixed plate (1017), and the connecting plate (1005) being mounted on both sides of the bidirectional screw (1003). A guide roller (1006) is movably mounted on the bottom end of the guide roller (1006), a first gear (1007) is mounted on the top end of the guide roller (1006), a second gear (1008) is mounted on one side of the first gear (1007), a first bevel gear (1009) is mounted on the top end of the second gear (1008), a second bevel gear (1010) is mounted on one side of the first bevel gear (1009), a rotating disk (1011) is mounted on one side of the second bevel gear (1010), and a knocking rod (1014) is mounted on the bottom end of one side of the rotating disk (1011).

2. The hot rolled coil cutting device according to claim 1, characterized in that: The top end of the knock rod (1014) is hinged to a hinge rod (1013), the top end of the hinge rod (1013) is hinged to a fixed column (1012), one end of the fixed column (1012) is fixed to one side of the rotating disk (1011), a guide sleeve (1015) is installed on the outer side of the knock rod (1014), one side of the guide sleeve (1015) is fixed to one side of the connecting plate (1005), and a rubber pad (1016) is installed at the bottom end of the guide sleeve (1015).

3. The hot rolled coil cutting device according to claim 1, characterized in that: An upper slitting roller (5) is installed at the top end of the slitting machine (3), a third cylinder (4) is installed at the top end of the upper slitting roller (5), a lower slitting roller (9) is installed at the bottom end of the upper slitting roller (5), a fourth cylinder (14) is provided at the top end of the cutting frame (7), a cutting knife (11) is installed at the bottom end of the fourth cylinder (14), and a cutting seat (12) is installed at the bottom end of the cutting frame (7).

4. The hot rolled coil cutting device according to claim 1, characterized in that: A tensioning structure (2) is provided at the top of the workbench (1), and the tensioning structure (2) includes a fixed frame (201), the fixed frame (201) is installed on one side of the workbench (1), a second cylinder (205) is installed on one side of the fixed frame (201), and a movable rotating shaft (206) is installed at the middle position of the top of the workbench (1), and one end of the movable rotating shaft (206) is movably connected to one end of the second cylinder (205).

5. The hot rolled coil cutting device according to claim 4, characterized in that: A disc (2020) is installed on one side of the top of the workbench (1), a guide groove (208) is provided inside the disc (2020), a guide block (207) is installed inside the guide groove (208), a tensioning sleeve (209) is fixed on one side of the guide block (207), a tensioning block (2011) is installed inside the tensioning sleeve (209), an extrusion block (2010) is installed on the outside of the movable rotating shaft (206), a connecting disc (2012) is installed on the outside of one end of the movable rotating shaft (206), a limiting strip (2013) is installed inside the connecting disc (2012), and a limiting groove (2021) is provided on the outside of one end of the movable rotating shaft (206).

6. The hot rolled coil cutting device according to claim 5, characterized in that: The limiting strips (2013) are provided in multiple groups, and a limiting structure is formed between the multiple groups of limiting strips (2013) and the limiting grooves (2021).

7. The hot rolled coil cutting device according to claim 1, characterized in that: The top of the workbench (1) is equipped with a mounting frame (202), the top of the mounting frame (202) is equipped with a first cylinder (203), the bottom of the first cylinder (203) is equipped with a limit plate (204), the inside of the workbench (1) is equipped with a screw rod (2016), the outside of the screw rod (2016) is equipped with a wire sleeve (2015), the top of the wire sleeve (2015) is equipped with a connecting seat (2019), the two sides of the bottom of the connecting seat (2019) are equipped with guide plates (2017), the top of the connecting seat (2019) is equipped with a height adjustment cylinder (2018), and the top of the height adjustment cylinder (2018) is equipped with a placement seat (2014).

8. The hot rolled coil cutting device according to claim 3, characterized in that: A clamping structure (8) is provided on both sides of the cutting blade (11), and the clamping structure (8) includes a connecting frame (803), the connecting frame (803) is installed on both sides of the cutting blade (11), an extrusion plate (801) is fixed on one side of the connecting frame (803), and a placement frame (806) is fixed on both sides of the interior of the cutting frame (7), a placement groove (807) is provided inside the placement frame (806), a clamping block (804) is installed inside the placement groove (807), a spring (805) is installed on one side of the clamping block (804), and a moving groove (802) is provided inside the placement groove (807) at the bottom end of the cutting frame (7).

9. The hot rolled coil cutting device according to claim 8, characterized in that: One side of the spring (805) is fixed to one side inside the placement groove (807), and the spring (805) and one side inside the placement groove (807) form a telescopic structure.

10. The hot rolled coil cutting device according to claim 8, characterized in that: The clamping blocks (804) are provided in two groups, and the two groups of clamping blocks (804) are symmetrically distributed inside the cutting frame (7).

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