Strip steel longitudinal slitting machine

Abstract

The present application relates to the technical field of roll shearing machine, especially to a longitudinal roll shearing machine for steel strips, comprising a processing table, a mounting plate fixedly installed at the center of the surface of the processing table, and a plurality of pairs of mounting shafts evenly arranged on the surface of the mounting plate, each of the mounting shafts being a hollow tubular structure. The present application enables each cutter to contact the initial low-temperature heat-dissipating oil through the single-shaft single-cutter and independent heat-dissipating and oil-supplying mode, avoids the problems of softening of the distal cutter due to high-temperature cutting edge and condensation of the proximal cutter due to over-cooled oil, ensures the consistency of the hardness and cutting performance of the cutting edges of all the cutters, and reduces the risk of deformation of the shaft body, especially suitable for high-precision steel strip processing scenarios.

Description

Technical Field

[0001] This invention relates to the field of roll shearing technology, and in particular to a longitudinal roll shearing machine for steel strips. Background Technology

[0002] In the steel sheet processing industry, longitudinal roll shears have become the mainstream equipment due to their ability to achieve continuous and efficient steel sheet cutting. Currently, most longitudinal roll shears on the market adopt the traditional "multi-blade coaxial" design, that is, multiple cutting blade assemblies are installed at intervals on a single hollow mounting shaft, and the synchronous rotation of the mounting shaft drives all the cutting blades to cut the steel sheet in multiple passes.

[0003] Single-blade coaxial designs are inconvenient for heat dissipation of the blades. The high-speed contact between the blades and the steel plate generates significant heat over time, impacting blade lifespan. Multi-blade coaxial equipment introduces cooling oil into a hollow mounting shaft to dissipate heat from the cutters and shaft. However, due to the structural limitations of a single-shaft multi-blade design, the cooling oil must flow sequentially along the mounting shaft through each cutter assembly, inevitably creating a temperature gradient: cutter assemblies near the oil inlet preferentially contact the initially low-temperature oil, resulting in high cooling efficiency and significant temperature reduction; however, as the oil flows along the mounting shaft, its temperature gradually increases after absorbing heat from the front cutters, and its cooling capacity significantly decreases by the time it reaches the more distant cutter assemblies. Summary of the Invention

[0004] The purpose of this invention is to provide a longitudinal roll shearing machine for steel strips, which solves the problem that the single-blade coaxial method is inconvenient for heat dissipation of the blades, and even the use of internal cooling oil cannot achieve uniform heat dissipation of the blades.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A longitudinal roll shearing machine for steel strips includes: a processing table; a mounting plate, which is fixedly installed at the center of the processing table surface, and the surface of the mounting plate is evenly provided with multiple pairs of mounting shafts, each pair of mounting shafts being a hollow tubular structure, and each mounting shaft surface having only one detachable cutting blade assembly, so that the cutting blade assemblies can be used in pairs to form longitudinal cuts on the steel plate by means of the mounting shafts being arranged in pairs; a position adjustment mechanism, which includes a driving component, an arc plate, and an adapter, the driving component being fixedly installed on the surface of the mounting plate at the position corresponding to each pair of cutting blade assemblies, for driving the mounting shafts to move synchronously horizontally, thereby realizing the position adjustment of the cutting blade assemblies; and a synchronous transmission mechanism, which includes a transmission component, a motor, pulleys, and A belt drives all mounting shafts to rotate synchronously; a heat dissipation system includes a guide component, a nozzle, and a guide sleeve. The guide component includes a sealing block, a first movable plug, a second movable plug, a fixed rod, a sealing ring, and an electric push rod. The sealing block, the first movable plug, and the second movable plug are arranged sequentially along the axial direction of the mounting shaft. The electric push rod drives the fixed rod to move the first and second movable plugs synchronously to switch the movement path of the cooling oil. During cutting, the cooling oil circulates from inside the cutting assembly to dissipate heat. When replacing the steel plate, the cooling oil is sprayed onto the surface of the cutting assembly through the nozzle to dissipate heat. When disassembling the cutting assembly, the internal channel of the mounting shaft is blocked. The guide sleeve is rotatably fitted onto the end of the mounting shaft to form a cooling oil circulation.

[0007] Preferably, a horizontal bar is also fixedly installed on the surface of the mounting plate. The number of the horizontal bars matches the number of cutter assembly groups and is evenly arranged between each cutter assembly group. The height of the horizontal bar is flush with the gap between the upper and lower annular cutters, which is used to support the steel plate during the cutting process.

[0008] Preferably, the cutter assembly includes a bushing and an annular cutter, and a mounting plate is fixedly sleeved on the surface of the mounting shaft to achieve a fixed connection between the cutter assembly and the mounting shaft.

[0009] Preferably, the mounting shaft surface has a first through hole and a second through hole respectively at the position where the cutter assembly is installed. The first through hole and the second through hole are arranged in a circumferential array. The bushing has an annular cavity inside. The two ends of the annular cavity have a first annular gap and a second annular gap respectively. The first annular gap is connected to the first through hole, and the second annular gap is connected to the second through hole. The cooling oil can enter the annular cavity through the first through hole and the first annular gap in sequence, and then return to the mounting shaft through the second annular gap and the second through hole.

[0010] Preferably, the sealing block is fixedly installed inside the mounting shaft on the side near the adapter. The sealing block has a first circular hole in its center. A second sealing plug is fixedly installed at the center of the end of the first movable plug facing the sealing block. The surface of the first movable plug has a circumferential array of second circular holes. The surface of the sealing block is uniformly fixedly installed with first sealing plugs corresponding to the second circular holes.

[0011] Preferably, the driving component is an electric telescopic rod, the fixed end of which is fixedly connected to the surface of the mounting plate, and the telescopic end of which is fixedly connected to the side wall of the arc-shaped plate. The arc-shaped plate is driven to slide horizontally along the surface of the mounting plate by the telescopic movement of the electric telescopic rod.

[0012] Preferably, the flow guide sleeve has an annular groove inside, and the mounting shaft surface has a third through hole circumferentially opened at the position corresponding to the annular groove. The top of the flow guide sleeve is connected to a fixing pipe, and the surface of the fixing pipe is provided with a mounting block. The mounting block is fixed to the arc plate by bolts, and the fixing pipe is connected to an external hose and a plate heat exchanger.

[0013] Preferably, the surface of the mounting plate is slidably connected with a pair of symmetrical arc-shaped plates corresponding to the position of each set of mounting shafts. The ends of the upper and lower arc-shaped plates are fixedly connected to form a whole by a connecting rod. The adapter is rotatably connected to the end of the mounting shaft and communicates with the inside of the mounting shaft. The adapter is fixedly connected through the connecting rod.

[0014] Preferably, the nozzle circumferential array is disposed on the surface of the mounting shaft and communicates with the mounting shaft, with the open end facing the annular cutter.

[0015] Preferably, the first movable plug and the second movable plug are fixedly connected by a fixing rod. The sealing ring is fixedly installed inside the mounting shaft near the end. The sealing ring has a clearance hole in the center for the fixing rod to pass through. A sealing ring is provided inside the clearance hole. The electric push rod is fixedly installed inside the mounting shaft and located on the side of the sealing ring away from the second movable plug. The output end of the electric push rod is connected to the fixing rod.

[0016] This invention has at least the following beneficial effects:

[0017] To address the temperature gradient issue caused by the sequential flow of cooling oil in traditional multi-blade coaxial systems, this solution utilizes a single-axis, single-blade cooling oil supply method. This ensures that each cutter comes into contact with the initial low-temperature cooling oil, eliminating the impact of oil temperature decay. The resulting small temperature difference among all cutters prevents the softening of the cutting edge at the far end due to high temperatures and the condensation of the oil at the near end due to overcooling, ensuring consistent cutting edge hardness and cutting performance across all cutters. This eliminates the need for frequent downtime and replacement due to premature cutter damage. Stable cutter temperatures prevent burrs caused by high temperatures and kerf misalignment caused by softened cutting edges. Furthermore, it eliminates uneven local stress on the mounting shaft caused by temperature differences, reducing the risk of shaft deformation. This solution is particularly suitable for high-precision steel strip machining applications.

[0018] Through the synergistic design of internal circulation and surface spraying, the annular cutter achieves efficient and precise cooling. During cutting, the cooling oil enters the annular cavity of the cutter bushing through the mounting shaft through hole, circulates along the inside of the cutter, and acts directly on the bushing, quickly removing the concentrated heat generated by cutting and preventing the cutter from softening due to internal overheating. When changing the steel plate, the cooling path is switched so that the oil is sprayed directionally onto the cutter surface through the nozzle, quickly cooling the cutter body. The two methods can be switched as needed and complement each other, solving the problems of incomplete coverage by internal heat dissipation and lag in surface spraying cooling, while ensuring that the overall temperature of the cutter is uniform and stable. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 Side view;

[0022] Figure 3 This is a schematic diagram of the driving component structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the rotating sleeve structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the connecting rod structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the adapter structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the flow guide structure of the present invention;

[0027] Figure 8 This is a schematic diagram of the cutter assembly structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the nozzle structure of the present invention;

[0029] Figure 10 This is a schematic diagram of the first movable plug structure of the present invention.

[0030] In the diagram: 1. Processing table; 2. Conveyor belt; 3. Conveyor roller; 4. Mounting plate; 5. Horizontal bar; 6. Drive component; 7. Transmission component; 71. Drive gear; 72. Rotating sleeve; 73. Pulley; 74. Connecting gear; 8. Arc plate; 81. Connecting rod; 9. Mounting shaft; 91. Protruding rib; 92. Adapter; 93. Nozzle; 94. Mounting plate; 95. First through hole; 96. Second through hole; 97. Third through hole; 10. Cutter assembly; 101. Bushing; 102. Annular cutter; 103. Restricting block; 104. First annular gap; 105. Second annular gap; 106. Annular cavity; 11. Guide sleeve; 111. Fixing pipe; 112. Mounting block; 12. Guide component; 121. Sealing fixing block; 1211. First sealing plug; 1212. First round hole; 122. First movable plug; 1221. Second round hole; 1222. Second sealing plug; 123. Second movable plug; 124. Fixing rod; 125. Sealing ring; 126. Electric push rod. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0033] Reference Figure 1-10A longitudinal roll shearing machine for steel strips includes: a processing table 1, on which conveyor belts 2 are provided near both ends; and conveyor rollers 3 are provided on the surface of the processing table 1 relative to the two conveyor belts 2, driving the steel strip to move longitudinally through the cooperation of the conveyor rollers 3 and the conveyor belts 2; and a mounting plate 4, which is fixedly installed at the center of the surface of the processing table 1. Multiple pairs of mounting shafts 9 are evenly arranged on the surface of the mounting plate 4, each pair of mounting shafts 9 being a hollow tubular structure, and each mounting shaft 9 having only one detachable cutting head. The blade assembly 10 is arranged in pairs via mounting shafts 9, allowing for longitudinal cutting of steel plates. A position adjustment mechanism includes a drive component 6, arc-shaped plates 8, and an adapter 92. Pairs of symmetrical arc-shaped plates 8 are slidably connected to the surface of the mounting plate 4 corresponding to the positions of each set of mounting shafts 9. The ends of the upper and lower arc-shaped plates 8 are fixedly connected as a whole via connecting rods 81. The adapter 92 is rotatably connected to the end of the mounting shaft 9 and communicates with the interior of the mounting shaft 9. The adapter 92 is fixedly inserted through the connecting rod 81. The driving component 6 is fixedly installed on the surface of the mounting plate 4 at the position corresponding to each group of cutter assemblies 10, and is used to drive the arc plate 8 to move horizontally, thereby driving the mounting shaft 9 to move horizontally synchronously through the adapter 92, realizing the position adjustment of the cutter assembly 10; the synchronous transmission mechanism includes a transmission component 7, a motor, a pulley 73 and a belt, the transmission component 7 includes a rotating sleeve 72 corresponding to the mounting shaft 9, the rotating sleeve 72 rotatably passes through the mounting plate 4, the surface of the mounting shaft 9 is provided with four protrusions 91 arranged in an array, and the inner wall of the rotating sleeve 72 A groove adapted to the protrusion 91 is provided so that the mounting shaft 9 is slidably connected in the rotating sleeve 72. Each rotating sleeve 72 is fixedly fitted with a drive gear 71 at its end. A connecting gear 74 rotatably connected to the mounting plate 4 is provided between the upper and lower drive gears 71. The connecting gear 74 meshes with the upper and lower drive gears 71 respectively. The motor is fixedly installed on the side wall of the mounting plate 4. The output shaft port of the motor and the surface of the connecting gear 74 are both fixed with pulleys 73. Adjacent pulleys 73 are connected by belt drive to drive all mounting shafts 9 to rotate synchronously.The heat dissipation system includes a flow guide 12, a nozzle 93, and a flow guide sleeve 11. The nozzle 93 is arranged in a circumferential array on the surface of the mounting shaft 9 and communicates with the mounting shaft 9, with its open end facing the annular cutter 102. The flow guide 12 includes a sealing fixing block 121, a first movable plug 122, a second movable plug 123, a fixing rod 124, a sealing ring 125, and an electric push rod 126. The sealing fixing block 121, the first movable plug 122, and the second movable plug 123 are arranged sequentially along the axial direction of the mounting shaft 9. The electric push rod 126 drives the fixing rod 124 to move the first movable plug 122 and the second movable plug 123 synchronously to switch the movement path of the cooling oil. During cutting, the cooling oil circulates from inside the cutting blade assembly 10 for heat dissipation. When replacing the steel plate, the cooling oil is sprayed onto the surface of the cutting blade assembly 10 through the nozzle 93 for heat dissipation. When disassembling the cutting blade assembly 10, the internal channel of the mounting shaft 9 is blocked. The guide sleeve 11 has a rotating sleeve 72 located at the end of the mounting shaft 9. The guide sleeve 11 has an annular groove inside. The mounting shaft 9 has a third through hole 97 on its circumference corresponding to the annular groove. The top of the guide sleeve 11 is connected to a fixed pipe 111. The surface of the fixed pipe 111 is provided with a mounting block 112, which is fixed to the arc plate 8 by bolts. The fixed pipe 111 is connected to an external hose and a plate heat exchanger to form a cooling oil circulation.

[0034] Furthermore, a horizontal bar 5 is fixedly installed on the surface of the mounting plate 4. The number of horizontal bars 5 matches the number of cutter assembly 10 groups and is evenly arranged between each group of cutter assembly 10. The height of the horizontal bar 5 is flush with the gap between the upper and lower annular cutters 102, and is used to support the steel plate during the cutting process.

[0035] Furthermore, the cutter assembly 10 includes a bushing 101 and an annular cutter 102. The annular cutter 102 is sleeved on the surface of the bushing 101 and integrally formed with the bushing 101. The bushing 101 has a circumferential array of limiting blocks 103 at its end. The mounting shaft 9 has a mounting plate 94 fixedly sleeved on its surface. The mounting plate 94 has a limiting groove that matches the limiting block 103 at one end near the bushing 101. After the limiting block 103 is inserted and positioned into the limiting groove, it is fastened with bolts through the bolt holes at the top of the mounting plate 94, thereby achieving a fixed connection between the cutter assembly 10 and the mounting shaft 9.

[0036] Furthermore, the surface of the mounting shaft 9 is provided with a first through hole 95 and a second through hole 96 at the position where the cutter assembly 10 is installed. The first through hole 95 and the second through hole 96 are arranged in a circumferential array. The bushing 101 is provided with an annular cavity 106 inside. The two ends of the annular cavity 106 are provided with a first annular gap 104 and a second annular gap 105, respectively. The first annular gap 104 is connected to the first through hole 95, and the second annular gap 105 is connected to the second through hole 96. The cooling oil can enter the annular cavity 106 through the first through hole 95 and the first annular gap 104 in sequence, and then return to the interior of the mounting shaft 9 through the second annular gap 105 and the second through hole 96.

[0037] Furthermore, the sealing block 121 is fixedly installed inside the mounting shaft 9 on one side near the adapter 92. The sealing block 121 has a first circular hole 1212 at its center. A second sealing plug 1222 is fixedly installed on the end center of the first movable plug 122 facing the sealing block 121. The surface of the first movable plug 122 has a circumferential array of second circular holes 1221. The surface of the sealing block 121 is uniformly fixed with first sealing plugs 1211 corresponding to the second circular holes 1221. In the cutting state, the first movable plug 122 is located at the connection point between the nozzle 93 and the mounting shaft 9 (blocking the nozzle 93). The second movable plug 122... The movable plug 123 is located between the first through hole 95 and the second through hole 96. The cooling oil enters the annular cavity 106 through the first round hole 1212, the second round hole 1221, and the first through hole 95 in sequence. When the steel plate is replaced, the first movable plug 122 is misaligned with the nozzle 93 (releasing the nozzle 93 from the blockage), and the second movable plug 123 is aligned with the second through hole 96 (blocking the second through hole 96). The cooling oil is sprayed onto the surface of the annular cutter 102 through the nozzle 93. When disassembled, the first sealing plug 1211 is inserted into the second round hole 1221, and the second sealing plug 1222 is inserted into the first round hole 1212, thereby sealing the internal channel of the mounting shaft 9.

[0038] Furthermore, the driving component 6 is an electric telescopic rod. The fixed end of the electric telescopic rod is fixedly connected to the surface of the mounting plate 4, and the telescopic end of the electric telescopic rod is fixedly connected to the side wall of the arc-shaped plate 8. The telescopic rod drives the arc-shaped plate 8 to slide horizontally along the surface of the mounting plate 4. The electric telescopic rod is an industrial-grade servo electric telescopic rod, and its model parameters meet the following requirements: rated thrust 500-1000N, maximum stroke 50-200mm, positioning accuracy ±0.1mm, and it has a built-in absolute encoder. The precise movement control of the electric telescopic rod is achieved through a PLC. The control module is implemented by pre-storing the position parameters of the cutter assembly 10 corresponding to steel strips of different widths. At the same time, it is connected to the grating ruler on the surface of the mounting plate 4 (the grating ruler is fixedly connected to the arc plate 8) to collect the actual displacement data of the arc plate 8 in real time and feed it back to the PLC. According to the deviation signal of "preset position - actual displacement", the PLC sends a pulse control command to the electric telescopic rod to drive the servo motor of the electric telescopic rod to rotate forward / reverse. After the arc plate 8 and the mounting shaft 9 are moved to the preset position, the electric telescopic rod automatically locks, realizing the precise positioning of the cutter assembly 10.

[0039] Furthermore, it also includes a conductive slip ring device, which includes a rotating end and a fixed end. The rotating end is fixedly connected to the end of the mounting shaft 9 away from the adapter sleeve and electrically connected to the electric push rod 126. The fixed end is fixed relative to the external frame and connected to an external power source. The electric push rod 126 is powered by the conductive slip ring device when the mounting shaft 9 is rotating. The conductive slip ring device uses industrial slip ring transmission technology to power the electric push rod 126. This technology is a direct application of existing technology and will not be described in detail here.

[0040] Furthermore, it also includes a conductive slip ring device, which includes a rotating end and a fixed end. The rotating end is fixedly connected to the end of the mounting shaft 9 away from the adapter sleeve and electrically connected to the electric push rod 126. The fixed end is fixed relative to the external frame and connected to an external power source. The electric push rod 126 is powered by the conductive slip ring device when the mounting shaft 9 is rotating.

[0041] Furthermore, the sealing block 121 is made of alloy structural steel with a galvanized surface; the first sealing plug 1211 and the second sealing plug 1222 are preferably made of nitrile rubber; the first movable plug 122 and the second movable plug 123 are made of reinforced polytetrafluoroethylene; and the sealing ring 125 is made of filled polytetrafluoroethylene.

[0042] Furthermore, the cooling oil uses hydrogen-refined mineral oil as the base oil, with added antioxidants and rust inhibitors. It does not corrode high-speed steel or carbide cutting tools, and has no swelling or aging effects on nitrile rubber, fluororubber seals, equipment sealing rings 125, and adapter 92 seals, thus avoiding seal failure.

[0043] In summary, the conveyor belts 2 at both ends of the processing table 1 are started, and the conveyor rollers 3 are driven to rotate (the conveyor rollers 3 are in contact with the surface of the conveyor belt 2 to help press the steel plate); one end of the whole roll / plate of steel to be cut is placed into the conveyor belt 2, and the steel plate is transported longitudinally to the "working area of ​​the cutting assembly 10" on the surface of the mounting plate 4 by the friction between the conveyor belt 2 and the conveyor rollers 3, until the front end of the steel plate reaches the preset cutting starting point; at this time, the lower surface of the steel plate initially contacts the horizontal bar 5 on the surface of the mounting plate 4 (the height of the horizontal bar 5 is adapted to the thickness of the steel plate and does not affect the transport of the steel plate).

[0044] Based on the width of the steel strips to be cut, determine the number of cutting blade assemblies 10 to be used (e.g., to cut 3 steel strips 10cm wide, 4 cutting blade assemblies 10 are required, distributed in pairs on both sides and in the middle of the steel strip); activate the "drive unit 6" of the corresponding cutting blade assembly 10: the drive unit 6 pushes the arc plate 8 to slide horizontally on the surface of the mounting plate 4 (the arc plates 8 are arranged in pairs symmetrically and connected as a whole by the connecting rod 81); the arc plate 8 drives the mounting shaft 9 to move through the adapter 92. Since the mounting shaft 9 has 4 protrusions 91 on its surface and matching grooves on the inner wall of the rotating sleeve 72, the mounting shaft 9 can slide horizontally within the rotating sleeve 72 without disengaging from the rotating connection, ultimately driving the cutting blade assembly 10 to the preset cutting position; the horizontal rod 5 is still precisely positioned between each set of cutting blade assemblies 10 and is flush with the gap between the upper and lower annular cutting blades 102 (without interfering with the rotation of the cutting blades), preparing for subsequent cutting support.

[0045] The motor on the side wall of the mounting plate 4 is started. The motor output shaft drives the connecting gear 74 to rotate via pulley 73 and belt. The connecting gear 74 simultaneously meshes with the upper and lower drive gears 71, which drive the rotating sleeve 72 to rotate. The rotating sleeve 72 drives the mounting shaft 9 to rotate synchronously via the convex rib 91 and groove structure. The mounting shaft 9 then drives the cutter assembly 10 to rotate at high speed. At the same time, the conveyor belt 2 continuously transports the steel plate. The horizontal bar 5 provides stable support for the steel plate. The horizontal bar 5 is in close contact with the lower surface of the steel plate. Because the horizontal bar 5 is flush with the gap between the upper and lower annular cutters 102, it does not interfere with the rotation of the annular cutter 102 and can cover the cutting area of ​​the steel plate, preventing the steel plate from sagging or shifting due to the cutting pressure of the annular cutter 102, thus ensuring the cutting width accuracy of multiple sets of steel strips. The rotating annular cutter 102 performs longitudinal continuous cutting on the steel plate to form multiple sets of parallel steel strips.

[0046] The external cooling oil system is activated, and cooling oil is injected into the hollow interior of the mounting shaft 9 through the adapter 92. The guide 12 switches to the "cutting cooling mode," that is, the electric push rod 126 pushes the fixing rod 124, causing the first movable plug 122 to block the inlet of the nozzle 93, and the second movable plug 123 to be located between the first through hole 95 and the second through hole 96, preventing the cooling oil from flowing directly out of the mounting shaft 9. The cooling oil path is from the external hose → adapter 92 → interior of the mounting shaft 9 → first round hole 121 of the sealing fixing block 121. 2→ Second circular hole 1221 of the first movable plug 122→ First through hole 95→ First annular gap 104 of the bushing 101→ Annular cavity 106 of the bushing 101 (absorbs the cutting heat of the annular cutter 102)→ Second annular gap 105→ Second through hole 96→ Inside the mounting shaft 9→ Third through hole 97→ Annular groove of the guide sleeve 11→ Fixed pipe 111→ External hose→ Plate heat exchanger (cooling)→ Re-injected into the mounting shaft 9, forming a closed-loop circulation heat dissipation to avoid wear of the cutter due to high temperature.

[0047] After a batch of steel plates is cut, the conveyor belt 2 stops conveying, and a new steel plate is replaced manually or mechanically. The guide component 12 switches to the "intermittent heat dissipation mode", that is, the electric push rod 126 pulls the fixed rod 124, so that the first movable plug 122 leaves the inlet of the nozzle 93, releasing the nozzle 93 from the blockage. The second movable plug 123 blocks the second through hole 96, blocking the heat dissipation oil from passing directly through the mounting shaft 9. The heat dissipation oil path is switched, and the heat dissipation oil inside the mounting shaft 9 is sprayed directly onto the surface of the annular cutter 102 through the nozzles 93 (opening towards the cutter assembly 10) of the circumferential array on the surface of the mounting shaft 9, so as to achieve rapid cooling. After the new steel plate is installed, the conveyor belt 2 restarts, the electric push rod 126 resets, and the guide component 12 returns to the "cutting heat dissipation mode" to enter the next round of cutting.

[0048] When the cutter assembly 10 needs to be replaced due to wear, first shut off the cooling oil system and stop all power; switch the guide 12 to "blocking mode", and the electric push rod 126 pushes the fixing rod 124 to the limit position, so that the first sealing plug 1211 is inserted into the second round hole 1221 of the first movable plug 122, and the second sealing plug 1222 is inserted into the first round hole 1212 of the sealing fixing block 121, completely sealing the internal channel of the mounting shaft 9 to prevent excessive leakage of residual cooling oil; disassemble the cutter assembly 10, unscrew the bolt at the top of the mounting plate 94, and pull the limiting block 103 at the end of the bushing 101 out of the limiting groove of the mounting plate 94 (the limiting block 103 is engaged with the limiting groove). Once the bushing 101 (with the annular cutter 102) is removed from the mounting shaft 9, the bushing 101 can be removed from the mounting shaft 9 after the new cutter assembly 10 is replaced and installed in reverse to leave the nozzle 93 inlet, thus releasing the nozzle 93 blockage. The second movable plug 123 blocks the second through hole 96, preventing the cooling oil from directly passing through the mounting shaft 9. The cooling oil path is switched, and the cooling oil inside the mounting shaft 9 is sprayed directly onto the surface of the annular cutter 102 through the nozzles 93 (opening towards the cutter assembly 10) of the circumferential array on the surface of the mounting shaft 9, achieving rapid cooling. After the new steel plate is installed, the conveyor belt 2 restarts, the electric push rod 126 resets, and the guide component 12 returns to the "cutting and cooling mode" to enter the next round of cutting.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A longitudinal roll shearing machine for steel strips, characterized in that, include: Processing table; The mounting plate is fixedly installed at the center of the processing table surface. Multiple sets of paired mounting shafts are evenly arranged on the surface of the mounting plate. Each set of mounting shafts is a hollow tubular structure, and only one cutting blade assembly can be detachably installed on the surface of each mounting shaft. The pairing of mounting shafts allows the cutting blade assemblies to be used in pairs to make longitudinal cuts on the steel plate. The cutter assembly includes a bushing and an annular cutter, and a mounting plate is fixedly sleeved on the surface of the mounting shaft to achieve a fixed connection between the cutter assembly and the mounting shaft; The mounting shaft surface has a first through hole and a second through hole respectively at the position where the cutter assembly is installed. The first through hole and the second through hole are arranged in a circumferential array. The bushing has an annular cavity inside. The two ends of the annular cavity have a first annular gap and a second annular gap respectively. The first annular gap is connected to the first through hole, and the second annular gap is connected to the second through hole. Cooling oil can enter the annular cavity through the first through hole and the first annular gap in sequence, and then return to the inside of the mounting shaft through the second annular gap and the second through hole. The position adjustment mechanism includes a drive component, an arc plate, and an adapter. The drive component is fixedly installed on the surface of the mounting plate at the position corresponding to each group of cutter assemblies, and is used to drive the mounting shaft to move horizontally synchronously to realize the position adjustment of the cutter assemblies. A synchronous transmission mechanism, comprising a transmission component, a motor, pulleys, and a belt, to drive all mounting shafts to rotate synchronously; The heat dissipation system includes a flow guide, a nozzle, and a flow guide sleeve. The flow guide includes a sealing and fixing block, a first movable plug, a second movable plug, a fixing rod, a sealing ring, and an electric push rod. The sealing and fixing block, the first movable plug, and the second movable plug are arranged sequentially along the mounting shaft. The electric push rod drives the fixing rod to move the first movable plug and the second movable plug synchronously to switch the movement path of the heat dissipation oil. During cutting, the heat dissipation oil circulates from inside the cutting blade assembly to dissipate heat. When replacing the steel plate, the heat dissipation oil is sprayed onto the surface of the cutting blade assembly through the nozzle to dissipate heat. When disassembling the cutting blade assembly, the internal channel of the mounting shaft is blocked. The guide sleeve is rotatably fitted onto the end of the mounting shaft to form a cooling oil circulation.

2. The longitudinal roll shear for steel strips according to claim 1, characterized in that, A horizontal bar is also fixedly installed on the surface of the mounting plate. The number of the horizontal bars matches the number of cutter assembly groups and is evenly arranged between each cutter assembly group. The height of the horizontal bar is flush with the gap between the upper and lower annular cutters, which is used to support the steel plate during the cutting process.

3. The longitudinal roll shear for steel strips according to claim 1, characterized in that, The sealing block is fixedly installed inside the mounting shaft on the side near the adapter. The sealing block has a first circular hole in its center. A second sealing plug is fixedly installed at the center of the end of the first movable plug facing the sealing block. The surface of the first movable plug has a second circular hole arranged in a circumferential array. The surface of the sealing block is uniformly fixedly installed with first sealing plugs corresponding to the second circular holes.

4. The longitudinal roll shearing machine for steel strips according to claim 1, characterized in that, The driving component is an electric telescopic rod. The fixed end of the electric telescopic rod is fixedly connected to the surface of the mounting plate, and the telescopic end of the electric telescopic rod is fixedly connected to the side wall of the arc-shaped plate. The arc-shaped plate slides horizontally along the surface of the mounting plate by the extension and retraction of the electric telescopic rod.

5. The longitudinal roll shearing machine for steel strips according to claim 1, characterized in that, The flow guide sleeve has an annular groove inside, and the mounting shaft has a third through hole on its circumference corresponding to the position of the annular groove. The top of the flow guide sleeve is connected to a fixed pipe, and the surface of the fixed pipe is provided with a mounting block. The mounting block is fixed to the arc plate by bolts. The fixed pipe is connected to an external hose and a plate heat exchanger.

6. The longitudinal roll shearing machine for steel strips according to claim 1, characterized in that, The mounting plate surface is slidably connected with a pair of symmetrical arc-shaped plates corresponding to the position of each set of mounting shafts. The ends of the upper and lower arc-shaped plates are fixedly connected to form a whole by a connecting rod. The adapter is rotatably connected to the end of the mounting shaft and communicates with the inside of the mounting shaft. The adapter is fixedly connected through the connecting rod.

7. The longitudinal roll shear for steel strips according to claim 1, characterized in that, The nozzle circumferential array is disposed on the surface of the mounting shaft and communicates with the mounting shaft, with the open end facing the annular cutter.

8. The longitudinal roll shearing machine for steel strips according to claim 1, characterized in that, The first movable plug and the second movable plug are fixedly connected by a fixing rod. The sealing ring is fixedly installed inside the mounting shaft near the end. The sealing ring has a clearance hole in the center for the fixing rod to pass through. A sealing ring is provided inside the clearance hole. The electric push rod is fixedly installed inside the mounting shaft and located on the side of the sealing ring away from the second movable plug. The output end of the electric push rod is connected to the fixing rod.

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