A galvanized steel sheet cutting and shearing device and its working method

Abstract

This invention discloses a galvanized steel sheet cutting and shearing device and its working method, belonging to the technical field of shearing devices. The galvanized steel sheet cutting and shearing device and its working method include a shearing machine body, a lower shearing blade disposed on the shearing machine body, and an upper shearing blade vertically disposed on the shearing machine body. A dynamic material support mechanism is provided on the shearing machine body, the dynamic material support mechanism including: two first rotating seats. This invention, through the design of the dynamic material support mechanism, achieves precise dynamic material support of the sheared steel sheet, solving problems such as shear cut size deviation and stress concentration caused by the steel sheet sagging due to gravity during existing shearing processes. The dynamic material support mechanism of the device closely coordinates with the shearing action of the upper shearing blade, and the material support component rises synchronously at the moment of shearing, ensuring that the steel sheet is supported in time, preventing it from sagging and deforming or impacting the equipment.

Description

Technical Field

[0001] This invention relates to the field of shearing device technology, specifically to a galvanized steel sheet cutting and shearing device and its working method. Background Technology

[0002] Galvanized steel sheet refers to a steel sheet with a layer of metallic zinc coated on its surface. The zinc layer can be applied to the steel sheet surface through processes such as hot-dip galvanizing and electro-galvanizing. The zinc layer can effectively protect the steel substrate from corrosion. During the production and processing of galvanized steel sheets, shearing operations are generally required. A galvanized steel sheet cutting and shearing device is a special device used to cut galvanized steel sheets. Its basic function is to cut the whole galvanized steel sheet into small pieces that meet the production requirements according to the preset size and shape, so as to meet the needs of subsequent processing technology.

[0003] In industrial production, shearing thin and long galvanized steel sheets is a technically challenging task. To achieve a more efficient shearing effect, a shearing blade with an inclined cutting edge is usually used for downward shearing. The principle of this shearing method is that by having the inclined cutting edge contact the steel sheet, the long galvanized steel sheet is gradually sheared from one side to the other.

[0004] During the shearing operation, the galvanized steel sheet will sag under its own weight. Although the steel sheet has separated from the shearing blade, the parts that are not completely sheared are still connected and waiting to be pressed down for shearing. At this time, the sagging steel sheet will exert stress on these un-sheared parts. This stress will not only cause deviations in the size of the shear cut, affecting the shearing accuracy and quality, but may also cause deformation and cracking of the galvanized steel sheet in subsequent processing or use, thereby reducing the overall performance and reliability of the product. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a galvanized steel sheet cutting and shearing device and its working method. This solves the problem that during the shearing operation, the sheared galvanized steel sheet sags under its own weight. Although the steel sheet has separated from the shearing blade, the uncut portions remain connected and await further shearing. The sag of the steel sheet exerts stress on these uncut portions, causing deviations in the shear cut dimensions, affecting shearing accuracy and quality. This stress can also lead to deformation and cracking of the sheared galvanized steel sheet during subsequent processing or use, thus reducing the overall performance and reliability of the product.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a galvanized steel sheet cutting and shearing device, comprising a shearing machine body, a lower shearing blade disposed on the shearing machine body, and an upper shearing blade vertically disposed on the shearing machine body; the shearing machine body is provided with a dynamic material support mechanism, the dynamic material support mechanism comprising:

[0007] Two first rotating seats are provided on the shearing machine body, and each of the two first rotating seats has an I-shaped rotating block rotating on it.

[0008] The material support assembly is connected to the lower shearing blade. Both ends of the material support assembly are provided with sliding components, which are rotatably connected to the corresponding I-beam rotating block. The material support assembly is used to lift and lower under the drive of the I-beam rotating block to realize the material support operation of the sheared steel plate.

[0009] The transmission assembly is connected to the I-beam rotating block and is connected to the rack and pinion mounted on the upper shearing blade. When the upper shearing blade presses down relative to the lower shearing blade to shear the steel plate, the rack and pinion drive the transmission assembly to move, thereby causing the I-beam rotating block to move, and thus enabling the material support assembly to dynamically support the sheared steel plate.

[0010] Furthermore, the I-shaped rotating block is I-shaped, and its two sides are rotatably connected to the first rotating seat and the sliding assembly, respectively.

[0011] The side of the I-shaped rotating block closest to the first rotating seat is connected to the transmission assembly.

[0012] Furthermore, the transmission assembly includes:

[0013] The first transmission wheel is fixed on the I-shaped rotating block, and a chain is connected to the first transmission wheel.

[0014] The linkage structure is mounted on the shearing machine body at one end of the shearing station via a third rotating seat. The linkage structure is used to convert the linear motion of the rack into the oscillating motion of the I-beam rotating block.

[0015] Furthermore, the linkage structure includes:

[0016] The second drive wheel is connected to the chain drive and is used to transmit power to the first drive wheel through the chain.

[0017] A gear is fixed to one side of the second transmission wheel, and the second transmission wheel and the gear are rotatably mounted on the third rotating seat. The gear meshes with the rack.

[0018] Furthermore, the sliding assembly includes a slide rail and a slider, the slide rail being fixedly disposed at the end of the material support assembly, and the slider being slidably disposed on the slide rail;

[0019] The slider is equipped with a second rotating seat that is rotatably connected to the I-shaped rotating block.

[0020] Furthermore, the lower shear blade has a vertical groove at its center, perpendicular to its width direction.

[0021] Furthermore, the material support assembly includes:

[0022] A base plate, with its two ends respectively mounted on the corresponding slide rails, and a guide pin that slides in the vertical groove at the center of the bottom of the base plate;

[0023] A material support plate is slidably connected to the end face of the base plate via a sliding column. A guide hole is provided on the base plate corresponding to the sliding column. A second rotating block is symmetrically fixed on the material support plate. The material support plate and the base plate are connected by a spacing adjustment structure, which is used to adjust the combined thickness of the material support plate and the base plate according to the thickness of the steel plate.

[0024] Furthermore, the spacing adjustment structure includes:

[0025] A sliding frame is symmetrically fixed to the bottom of both ends of the base plate. A screw is rotatably connected to the two sliding frames. The two ends of the screw have opposite helical directions. A rotating shaft is fixed at the center of the screw.

[0026] A movable lifting component is connected between the screw and the second rotating block, and the movable lifting component is used to convert the rotational motion of the screw into the lifting motion of the material support plate.

[0027] Furthermore, the movable lifting member includes:

[0028] A first rotating block slides on the sliding frame and is threadedly connected to the screw.

[0029] A transmission rod, one end of which rotates on the first rotating block and the other end of which rotates on the second rotating block.

[0030] The present invention also provides a method of using a galvanized steel sheet cutting and shearing device, comprising the following steps:

[0031] Step 1: Based on the thickness of the steel plate to be sheared, adjust the combined thickness between the support plate and the base plate using the spacing adjustment structure to ensure that the support plate can stably support the sheared steel plate.

[0032] Step 2: Start the shearing device. Under the action of the drive mechanism, the upper shearing blade moves downward relative to the lower shearing blade to shear the steel plate.

[0033] Step 3: During the shearing process, the rack mounted on the upper shearing blade moves in a straight line as the upper shearing blade is pressed down. The rack meshes with the gear in the transmission assembly, driving the gear to rotate, which in turn drives the I-beam rotating block to swing around the first rotating seat.

[0034] Step 4: The swing of the I-beam rotating block drives the material support assembly to rise through the sliding component, realizing dynamic material support for the sheared steel plate. The rising speed of the material support assembly matches the downward pressing speed of the upper shear blade, ensuring that the steel plate can be supported in time at the moment of shearing.

[0035] Step 5: After the shearing is completed, the upper shearing blade is reset under the action of the drive mechanism, and the rack moves upward until the material support assembly falls back to the initial position, ready for the next shearing cycle.

[0036] The present invention has the following beneficial effects:

[0037] (1) The galvanized steel sheet cutting and shearing device and its working method, through the design of the dynamic material support mechanism, realizes the precise dynamic material support of the sheared steel sheet, which solves the problems of shearing cut size deviation and stress concentration caused by the steel sheet sagging due to gravity during the existing shearing process. The dynamic material support mechanism of the device is closely coordinated with the shearing action of the upper shearing blade. The material support component rises synchronously at the moment of shearing to ensure that the steel sheet is supported in time, avoiding its falling deformation or impact on the equipment, which further improves the shearing quality and yield. At the same time, the device can adapt to steel sheets of different thicknesses and sizes. The combined thickness of the material support plate and the bottom plate can be flexibly adjusted through the spacing adjustment structure to meet diverse production needs and enhance the versatility and flexibility of the device.

[0038] The design of the transmission component enables efficient conversion and precise transmission of motion, transforming the linear motion of the rack into the oscillation of the I-beam rotating blocks, which in turn drives the lifting and lowering of the material support assembly. The smooth coordinated operation of all components ensures the efficiency and stability of the shearing operation. In addition, the material support assembly is driven by two I-beam rotating blocks at both ends during operation, which can automatically adjust the material support angle according to the tilt of the upper shearing blade, ensuring that the material support plate fits tightly with the shearing part, providing uniform support force, avoiding vibration or shearing errors in the steel plate during the shearing process, and further improving the shearing accuracy.

[0039] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the galvanized steel sheet cutting and shearing device.

[0041] Figure 2 This is a schematic diagram of the galvanized steel sheet cutting and shearing device from another perspective.

[0042] Figure 3 This is a schematic diagram of the structure of the galvanized steel sheet cutting and shearing device viewed from below.

[0043] Figure 4 This is a partially enlarged structural diagram of the galvanized steel sheet cutting and shearing device.

[0044] Figure 5 This is a schematic diagram of the lower and upper shearing blades in a galvanized steel sheet cutting and shearing device.

[0045] Figure 6 This is a schematic diagram of the lower shearing blade in a galvanized steel sheet cutting and shearing device.

[0046] Figure 7 This is a schematic diagram of the material support assembly in the galvanized steel sheet cutting and shearing device.

[0047] Figure 8 This is a schematic diagram of the dynamic material support mechanism in the galvanized steel sheet cutting and shearing device.

[0048] Figure 9 This is a schematic diagram of the I-beam rotating block in the galvanized steel sheet cutting and shearing device.

[0049] Figure 10 This is a schematic diagram of the structure of the bottom plate in the galvanized steel sheet cutting and shearing device.

[0050] Figure 11 This is a schematic diagram of the material support plate in the galvanized steel sheet cutting and shearing device.

[0051] In the diagram, 1. Shearing machine body; 2. Lower shearing blade; 3. Upper shearing blade; 4. Vertical groove; 5. First rotating seat; 6. I-beam rotating block; 7. Second rotating seat; 8. Slider; 9. Slide rail; 10. First transmission wheel; 11. Chain; 12. Second transmission wheel; 13. Gear; 14. Third rotating seat; 15. Rack; 16. Base plate; 17. Guide pin; 18. Sliding frame; 19. Screw; 20. Rotating shaft; 21. First rotating block; 22. Transmission rod; 23. Material support plate; 24. Second rotating block. Detailed Implementation

[0052] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0054] The following is based on Figures 1-11 This invention describes the galvanized steel sheet cutting and shearing device and its working method provided in an embodiment of the invention.

[0055] On one hand, embodiments of the present invention provide a galvanized steel sheet cutting and shearing device, including a shearing machine body 1, a lower shearing blade 2 disposed on the shearing machine body 1, and an upper shearing blade 3 vertically disposed on the shearing machine body 1. The shearing machine body 1 is provided with a dynamic material support mechanism, which includes: a first rotating seat 5, two of which are disposed on the shearing machine body 1, and each of the two first rotating seats 5 has an I-beam rotating block 6 rotating on it; a material support assembly, which is connected to the lower shearing blade 2, and has sliding components at both ends, which are rotatably connected to the corresponding I-beam rotating block 6. The material support assembly is used to lift and lower under the drive of the I-beam rotating block 6 to realize the material support operation of the sheared steel sheet; and a transmission assembly, which is connected to the I-beam rotating block 6 and is connected to a rack 15 mounted on the upper shearing blade 3. When the upper shearing blade 3 presses down relative to the lower shearing blade 2 to shear the steel sheet, the rack 15 drives the transmission assembly to move, thereby causing the I-beam rotating block 6 to move, and thus enabling the material support assembly to realize the dynamic material support operation of the sheared steel sheet.

[0056] In this embodiment, when performing the shearing operation of galvanized steel sheet, in the initial state, the material support assembly is located at the initial position of the lower shearing blade 2 and is in a standby state, ready to support the steel sheet to be sheared at any time. When the upper shearing blade 3 starts to press down under the drive of external power and shears the steel sheet placed on the lower shearing blade 2, the rack 15 on the upper shearing blade 3 also moves downward accordingly.

[0057] At this point, the transmission component begins to play a crucial role. The linear motion of the rack 15 is closely coordinated with the transmission component. Through its connection with the rack 15, the transmission component converts the linear motion of the rack 15 into the rotational motion inside the transmission component.

[0058] After being transmitted through the transmission component, the motion is transmitted to the I-shaped rotating block 6. The special structure of the I-shaped rotating block 6 allows it to swing around the first rotating seat 5 when driven by the transmission component. This swing is not an irregular swaying, but an orderly movement under the precise control of the transmission component. As the I-shaped rotating block 6 swings, the connection between it and the sliding component is activated.

[0059] The sliding components are installed at both ends of the material support component. When the I-beam rotating block 6 swings, the sliding components are driven to move along a predetermined trajectory through a rotational connection, thereby converting the swing of the I-beam rotating block 6 into the lifting and lowering motion of the material support component. Driven by the sliding components, the material support component moves smoothly upward and accurately reaches the position that can support the sheared steel plate.

[0060] This dynamic material support process is closely coordinated with the shearing action of the upper shearing blade 3. The moment the steel plate is sheared, the material support component rises in time to ensure that the steel plate is steadily supported, avoiding deformation or impact on the equipment due to the steel plate falling due to its own weight. It can also prevent the steel plate from falling due to gravity when shearing thinner and longer steel plates, thus avoiding shearing errors at the shearing cut. At the same time, the dynamic material support mechanism can also adapt to steel plates of different thicknesses and sizes. By precisely controlling the lifting height of the material support component, it can meet diverse shearing needs.

[0061] After the shearing and material support operations are completed, when the upper shearing blade 3 resets, the rack 15 also moves upward. The transmission component transmits the motion in the opposite direction, causing the I-beam rotating block 6 to swing in the opposite direction, which in turn drives the material support component to descend smoothly and return to the initial position, preparing for the next shearing task. Throughout the process, the coordinated operation between the components is smooth, ensuring the efficiency and precision of the shearing operation as well as the quality and integrity of the steel plate.

[0062] Please see Figure 8 and Figure 9 As a further embodiment of the present invention, the I-shaped rotating block 6 is I-shaped, and the two sides of the I-shaped rotating block 6 are respectively rotatably connected to the first rotating seat 5 and the sliding assembly.

[0063] The side of the I-shaped rotating block 6 closest to the first rotating seat 5 is connected to the transmission assembly.

[0064] In this embodiment, the I-beam rotating block 6, as the core component of the dynamic material support mechanism, provides a solid foundation for the stable operation of the entire device with its unique I-beam structure. The two sides of the I-beam rotating block 6 are reliably connected to the first rotating seat 5 and the sliding component, respectively. This design allows the I-beam rotating block 6 to swing flexibly around the first rotating seat 5 and to transmit motion precisely through the sliding component, ensuring the smooth lifting and lowering of the material support component. When the upper shearing blade 3 cuts the steel plate, the side of the I-beam rotating block 6 closest to the first rotating seat 5 receives the driving force from the transmission component, which then drives the entire I-beam rotating block 6 to swing. Through the transmission of the sliding component, the material support component is lifted and lowered, ensuring that the cut steel plate receives timely and stable material support, effectively avoiding deformation or damage to the steel plate that may be caused by gravity falling, while improving the continuity of the shearing operation and the yield rate.

[0065] Please see Figure 9 As a further embodiment of the present invention, the transmission assembly includes: a first transmission wheel 10, which is fixed on the I-beam rotating block 6, and a chain is connected to the first transmission wheel 10; a linkage structure, which is installed on the shearing machine body 1 at one end of the shearing station via a third rotating seat 14, and the linkage structure is used to convert the linear motion of the rack 15 into the oscillating motion of the I-beam rotating block 6.

[0066] The above-mentioned linkage structure includes a second transmission wheel 12, which is connected to the chain 11 for transmission. The second transmission wheel 12 is used to transmit power to the first transmission wheel 10 through the chain 11. A gear 13 is fixed to one side of the second transmission wheel 12. The second transmission wheel 12 and the gear 13 are rotatably mounted on the third rotating seat 14. The gear 13 meshes with the rack 15.

[0067] In this embodiment, the design of the transmission component enables the conversion and precise transmission of motion. The first transmission wheel 10 is steadily fixed on the I-shaped rotating block 6. One end of the chain 11 is connected to the first transmission wheel 10, and the other end is connected to the second transmission wheel 12, providing a key connection and power transmission path for the entire transmission process.

[0068] The linkage structure is installed on the shearing machine body 1 at one end of the shearing station. It achieves stable support and reliable rotation performance through the third rotating seat 14. The second transmission wheel 12 not only closely cooperates with the chain 11 to ensure efficient and accurate power transmission, but is also fixed together with the gear 13. The two rotate coaxially on the third rotating seat 14. This integrated design greatly enhances the stability and transmission accuracy of the linkage structure. The gear 13 meshes with the rack 15. When the upper shearing blade 3 drives the rack 15 to make linear motion, the gear 13 begins to rotate precisely under the drive of the rack 15.

[0069] This rotational motion, transmitted through the second transmission wheel 12 and chain 11, ultimately drives the first transmission wheel 10 to rotate, causing it to swing the I-beam rotating block 6. The entire process begins with the linear motion of the rack 15, and after conversion by the linkage structure, it is finally transformed into the swing of the I-beam rotating block 6, which in turn drives the material support assembly to complete the precise material support operation of the sheared steel plate. This series of actions is smooth and continuous, with each component cooperating with the others, ensuring the efficiency, precision and stability of the shearing operation, and greatly improving the performance and reliability of the galvanized steel plate cutting and shearing device.

[0070] Please see Figure 9 and Figure 11 As a further embodiment of the present invention, the sliding component includes a slide rail 9 and a slider 8. The slide rail 9 is fixedly disposed at the end of the material support component, and the slider 8 is slidably disposed on the slide rail 9.

[0071] A second rotating seat 7 is mounted on the slider 8 and is rotatably connected to the I-shaped rotating block 6.

[0072] In this embodiment, the design of the sliding component fully reflects the pursuit of precision and stability. The slide rail 9 is firmly fixed to the end of the material support component, providing reliable sliding guidance. The slider 8 is installed on the slide rail 9, and the two work closely together, allowing the slider 8 to slide smoothly and reciprocally along the slide rail 9. To ensure that the slider 8 can accurately convert the swing of the I-beam rotating block 6 into the lifting and lowering motion of the material support component, a second rotating seat 7 is specially installed on the slider 8. This second rotating seat 7 establishes a flexible rotational connection with the I-beam rotating block 6, so that the swing of the I-beam rotating block 6 can be accurately transmitted to the slider 8 through the second rotating seat 7. In this way, the slider 8 can slide stably up and down along the slide rail 9, thereby driving the material support component to achieve precise lifting and lowering actions, ensuring the stability and reliability of the material support process, and providing reliable support for the sheared steel plate.

[0073] It is worth noting that, since the cutting edge of the upper shearing blade 3 is generally designed to be inclined when the steel plate is sheared, this inclined design means that when the steel plate is pressed down and sheared, it will be gradually sheared from one side to the other. In response to the inclined design of the cutting edge of the upper shearing blade 3, the material support assembly of this solution is driven by two I-beam rotating blocks 6 at both ends when it is in motion. Through the coordinated action of the two I-beam rotating blocks 6, after the steel plate is fully supported by the material support assembly, the entire material support assembly is in an inclined state, which is parallel to the inclined cutting edge of the upper shearing blade 3, thereby ensuring the smooth progress of the shearing process.

[0074] In the initial state, the two I-beam rotating blocks 6 have different tilt angles. The I-beam rotating block 6 located at the lower end of the upper shearing blade 3 is set at the initial position with a forward tilt angle, while the other I-beam rotating block 6 is set at the initial position with a reverse tilt angle. When the upper shearing blade 3 begins to press down to perform the shearing operation, the transmission component drives the two I-beam rotating blocks 6 to rotate according to the tilt angle of the blade and the shearing sequence. The I-beam rotating block 6 located on the lower side rotates forward, causing the material support component on that side to rise. When the edge of the I-beam rotating block 6 rotates beyond a 90-degree perpendicular position to the ground, the I-beam rotating block 6 continues to rotate forward, which causes the end of the material support component on that side to descend, ensuring that the blade of the upper shearing blade 3 can fall normally. The I-beam rotating block 6 on the other side rotates in the reverse direction, causing the end of the material support component on that side to rise, performing a material support operation on the sheared steel plate.

[0075] It is worth mentioning that the transmission components connected to the two I-beam rotating blocks 6 rotate at different speeds. Specifically, the transmission component on the forward-rotating side of the I-beam rotating block 6 rotates at a relatively faster speed, while the transmission component on the reverse-rotating side rotates at a relatively slower speed. This differentiated rotation speed design is to achieve the motion effect of one end of the material support assembly rising and then falling, while the other end continues to rise, thereby achieving precise dynamic control of the material support assembly and ensuring that it can closely fit the inclined cutting edge of the upper shear blade 3.

[0076] As the upper shearing blade 3 continues to press down, the two I-beam rotating blocks 6 continue to rotate, and the height difference between the two ends of the material support assembly gradually forms, eventually causing the entire material support assembly to be in an inclined state, parallel to the inclined cutting edge of the upper shearing blade 3. This design ensures that the material support assembly can closely fit the part of the steel plate being sheared, providing uniform support force and preventing the steel plate from deforming or vibrating due to uneven material support during the shearing process, thereby ensuring the shearing quality.

[0077] When the I-beam rotating block 6 swings to a certain angle, the material support assembly reaches a suitable tilt angle, which is consistent with the cutting edge of the upper shearing blade 3. This ensures that the upper shearing blade 3 can move along the normal motion trajectory during the downward pressing process and smoothly complete the shearing operation. After the shearing is completed, the upper shearing blade 3 resets, and the transmission assembly drives the I-beam rotating block 6 to rotate in the opposite direction, so that the material support assembly falls back smoothly, preparing for the next shearing operation.

[0078] Please see Figure 6 , Figure 8 , Figure 11 As a further embodiment of the present invention, the lower shearing blade 2 has a vertical groove 4 perpendicular to its width direction at the center.

[0079] The material support assembly includes: a base plate 16, with both ends of the base plate 16 mounted on corresponding slide rails 9, and a guide pin 17 that slides in the vertical groove 4 at the center of the bottom of the base plate 16; a material support plate 23, which is slidably connected to the end face of the base plate 16 via a sliding column, with a guide hole on the base plate 16 corresponding to the sliding column, and a second rotating block 24 symmetrically fixed on the material support plate 23; the material support plate 23 and the base plate 16 are connected by a spacing adjustment structure, which is used to adjust the combined thickness of the material support plate 23 and the base plate 16 according to the thickness of the steel plate.

[0080] The spacing adjustment structure includes: a sliding frame 18, which is symmetrically fixed at the bottom of both ends of the base plate 16. Screws 19 are rotatably connected to the two sliding frames 18. The threads at both ends of the screws 19 are in opposite directions. A rotating shaft 20 is fixed at the center of the screws 19. A movable lifting component is connected between the screws 19 and the second rotating block 24. The movable lifting component is used to convert the rotational motion of the screws 19 into the lifting motion of the material support plate 23.

[0081] The movable lifting component includes: a first rotating block 21, which slides on the sliding frame 18 and is threadedly connected to the screw 19; and a transmission rod 22, one end of which rotates on the first rotating block 21 and the other end of which rotates on the second rotating block 24.

[0082] In this embodiment, a vertical groove 4 is provided at the center of the lower shear blade 2. The direction of the vertical groove 4 is perpendicular to the width direction of the lower shear blade 2. This structural design provides a precise guiding path for the movement of the material support assembly. The two ends of the bottom plate 16 of the material support assembly are respectively mounted on the corresponding slide rails 9 to ensure that the bottom plate 16 can slide stably along the slide rails 9. A guide pin 17 is installed at the center of the bottom of the bottom plate 16. The guide pin 17 is tightly engaged with the vertical groove 4 on the lower shear blade 2, so that the bottom plate 16 always maintains a stable posture during the lifting process, avoiding the problem of affecting the material support accuracy due to the offset or shaking of the bottom plate 16.

[0083] The material support plate 23 is slidably connected to the end face of the base plate 16 via a sliding column. A guide hole is provided on the base plate 16 at the position corresponding to the sliding column. This design allows the material support plate 23 to be flexibly adjusted in the vertical direction to adapt to steel plates of different thicknesses. A second rotating block 24 is symmetrically fixed on the material support plate 23 and connected to the base plate 16 through a spacing adjustment structure. The spacing adjustment structure can precisely adjust the combined thickness between the material support plate 23 and the base plate 16 according to the thickness of the steel plate, thereby ensuring that the material support plate 23 can fit tightly against the bottom of the steel plate and provide reliable support.

[0084] In the spacing adjustment structure, the sliding frames 18 are symmetrically fixed at the bottom of both ends of the base plate 16. The two sliding frames 18 are rotatably connected to the screws 19. The two ends of the screws 19 are designed with opposite thread directions. This design allows the moving lifting parts at both ends to move synchronously in opposite directions when the screws 19 rotate, thereby precisely controlling the lifting height of the material support plate 23. The center of the screws 19 is fixed with a rotating shaft 20. By rotating the rotating shaft 20, the rotation angle of the screws 19 can be easily adjusted, thereby achieving precise adjustment of the position of the material support plate 23.

[0085] The movable lifting component is connected between the screw 19 and the second rotating block 24. Its function is to efficiently convert the rotational motion of the screw 19 into the lifting motion of the support plate 23. The first rotating block 21 in the movable lifting component is slidably mounted on the sliding frame 18 and threadedly connected to the screw 19. When the screw 19 rotates, the first rotating block 21 moves up and down along the sliding frame 18. One end of the transmission rod 22 is rotatably connected to the first rotating block 21, and the other end is rotatably connected to the second rotating block 24 on the support plate 23. This connection method allows the movement of the first rotating block 21 to directly drive the support plate 23 to achieve a smooth lifting action, ensuring the accuracy and stability of the material support process. The design of the entire material support assembly fully considers various needs in actual shearing operations. Through the fine structural design and close cooperation between components, it achieves efficient and stable material support for sheared steel plates, effectively improving the practicality and reliability of the galvanized steel plate unloading shearing device.

[0086] The method of using the above-described galvanized steel sheet cutting and shearing device includes the following steps:

[0087] Step 1: Based on the thickness of the steel plate to be sheared, adjust the combined thickness between the support plate 23 and the base plate 16 using the spacing adjustment structure to ensure that the support plate 23 can stably support the sheared steel plate.

[0088] Step 2: Start the shearing device. Under the action of the drive mechanism, the upper shearing blade 3 moves downward relative to the lower shearing blade 2 to shear the steel plate.

[0089] Step 3: During the shearing process, the rack 15 mounted on the upper shearing blade 3 moves in a straight line as the upper shearing blade 3 is pressed down. The rack 15 meshes with the gear 13 in the transmission assembly, driving the gear 13 to rotate, which in turn drives the I-beam rotating block 6 to swing around the first rotating seat 5.

[0090] Step 4: The swing of the I-beam rotating block 6 drives the material support assembly to rise through the sliding component, realizing dynamic material support of the sheared steel plate. The rising speed of the material support assembly matches the downward pressing speed of the upper shearing blade 3, ensuring that the steel plate can be supported in time at the moment of shearing.

[0091] Step 5: After the shearing is completed, the upper shearing blade 3 is reset under the action of the drive mechanism, and the rack 15 moves upward until the material support assembly falls back to the initial position, ready for the next shearing cycle.

[0092] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0093] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A galvanized steel sheet blanking and shearing device, comprising a shearing machine body (1), a lower shearing cutter (2) arranged on the shearing machine body (1), and an upper shearing cutter (3) arranged vertically on the shearing machine body (1), characterized in that, The shearing machine body (1) is provided with a dynamic material supporting mechanism, which comprises: A first rotating seat (5) is provided on the shearing machine body (1), and two first rotating seats (5) are provided on the shearing machine body (1), and a I-shaped rotating block (6) is rotatably arranged on each of the two first rotating seats (5); A material supporting assembly is connected with the lower shearing cutter (2), and both ends of the material supporting assembly are provided with sliding assemblies, the sliding assemblies are rotatably connected with the corresponding I-shaped rotating blocks (6), and the material supporting assembly is used for lifting under the driving of the I-shaped rotating blocks (6) to realize the material supporting operation on the sheared steel plate; A transmission assembly is connected with the I-shaped rotating block (6), the transmission assembly is in transmission connection with a rack (15) installed on the upper shearing cutter (3), when the upper shearing cutter (3) is pressed downward relative to the lower shearing cutter (2) to shear the steel plate, the transmission assembly is driven by the rack (15) to move, so that the I-shaped rotating block (6) moves, and then the material supporting assembly realizes the dynamic material supporting operation on the sheared steel plate.

2. The galvanized steel sheet blanking and shearing device according to claim 1, characterized in that: The I-shaped rotating block (6) is in the shape of I, and the two sides of the I-shaped rotating block (6) are rotatably connected with the first rotating seat (5) and the sliding assembly, respectively; The side of the I-shaped rotating block (6) close to the first rotating seat (5) is connected with the transmission assembly.

3. The galvanized steel sheet blanking and shearing device according to claim 1, characterized in that: The transmission assembly comprises: A first transmission wheel (10) is fixed on the I-shaped rotating block (6), and a chain (11) is in transmission connection with the first transmission wheel (10); A linkage structure is installed on the shearing machine body (1) at one end of the shearing station through a third rotating seat (14), and the linkage structure is used for converting the linear motion of the rack (15) into the swing motion of the I-shaped rotating block (6).

4. The galvanized steel sheet blanking and shearing device according to claim 3, characterized by: The linkage structure comprises: A second transmission wheel (12) is in transmission connection with the chain (11), and the second transmission wheel (12) is used for realizing the power transmission with the first transmission wheel (10) through the chain (11); A gear (13) is fixed on one side of the second transmission wheel (12), the second transmission wheel (12) and the gear (13) are rotatably installed on the third rotating seat (14), and the gear (13) is in meshing connection with the rack (15).

5. The galvanized steel sheet blanking and shearing device according to claim 1, characterized in that: The sliding assembly comprises a sliding rail (9) and a sliding block (8), the sliding rail (9) is fixedly arranged on the end of the material supporting assembly, and the sliding block (8) is slidably arranged on the sliding rail (9); A second rotating seat (7) is installed on the sliding block (8) and is rotatably connected with the I-shaped rotating block (6).

6. The galvanized steel sheet blanking and shearing device according to claim 5, characterized by: A vertical groove (4) is vertically arranged at the central part of the lower shearing cutter (2) and perpendicular to the width direction of the lower shearing cutter (2).

7. The galvanized steel sheet blanking and shearing device according to claim 6, characterized by: The material supporting assembly comprises: A bottom plate (16) is installed on the corresponding sliding rail (9) at both ends of the bottom plate (16), and a guide pin (17) is installed on the bottom center of the bottom plate (16) and slides in the vertical groove (4). A supporting plate (23) is slidably connected to the end face of the bottom plate (16) through a sliding column, a guide hole is formed in the bottom plate (16) corresponding to the sliding column, and a second rotating block (24) is symmetrically fixed to the supporting plate (23), wherein a spacing adjusting structure is arranged between the supporting plate (23) and the bottom plate (16) and used for adjusting the combined thickness of the supporting plate (23) and the bottom plate (16) according to the thickness of the steel plate.

8. The galvanized steel sheet blanking and shearing device according to claim 7, characterized by: The spacing adjusting structure comprises: Two sliding frames (18) are symmetrically fixed to the bottom of the two ends of the bottom plate (16), a screw rod (19) is rotatably connected to the two sliding frames (18), the screw rod (19) is provided with a rotating shaft (20) at the central part thereof, and the screw threads of the two ends of the screw rod (19) are in opposite directions. A moving jacking piece is connected between the screw rod (19) and the second rotating block (24) and used for converting the rotating movement of the screw rod (19) into the lifting movement of the supporting plate (23).

9. The galvanized steel sheet blanking and shearing device according to claim 8, characterized by: The moving jacking piece comprises: A first rotating block (21) is slidably arranged on the sliding frame (18) and threadedly connected to the screw rod (19). A transmission rod (22) is rotatably arranged at one end of the first rotating block (21) and at the other end of the second rotating block (24).

10. A method of operating a device for cutting-to-length a zinc-coated steel sheet, suitable for use in a device for cutting-to-length a zinc-coated steel sheet according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step one: according to the thickness of the steel plate to be cut, the combined thickness between the supporting plate (23) and the bottom plate (16) is adjusted by the spacing adjusting structure, so that the supporting plate (23) can stably support the cut steel plate; Step two: the cutting device is started, the upper cutting knife (3) moves downward relative to the lower cutting knife (2) under the action of the driving mechanism, and the steel plate is cut; Step three: in the cutting process, the rack (15) installed on the upper cutting knife (3) moves linearly with the downward pressing of the upper cutting knife (3), the rack (15) is engaged with the gear (13) in the transmission assembly, the gear (13) is driven to rotate, and then the I-shaped rotating block (6) is driven to swing around the first rotating seat (5); Step four: the swinging of the I-shaped rotating block (6) drives the supporting plate assembly to rise through the sliding assembly, so that the cut steel plate is dynamically supported, the rising speed of the supporting plate assembly matches the downward pressing speed of the upper cutting knife (3), and the steel plate can be timely supported at the cutting moment; Step five: after the cutting is completed, the upper cutting knife (3) is reset under the action of the driving mechanism, the rack (15) moves upward, and the supporting plate assembly falls back to the initial position, so that the next cutting cycle is prepared.

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