CN118254003A - Ultrathin strip steel slitting machine - Google Patents

Abstract

The present invention relates to the technical field of slitting machines, specifically to an ultra-thin strip slitting machine, comprising a slitting machine body and a support frame, a bottom plate is installed between the two sides of the slitting machine body, a long groove matching the cutting knife of the slitting machine body is opened on the top of the bottom plate, a limiting component for limiting the strip and cleaning the burrs on the lower surface of the strip after cutting is fixedly connected to the top of the support frame; the limiting component comprises a supporting component for supporting the strip from multiple points at different heights, an extrapolation component for changing the shape of the strip is installed at one end of the supporting component close to the bottom plate, and a grinding component for removing the burrs of the strip is installed at one end of the extrapolation component away from the bottom plate, the supporting frame comprises a supporting plate, a plurality of rollers are installed at the bottom of the supporting plate, and a supporting rod is fixedly connected to the top of the supporting plate. The problem that the existing slitting machine is difficult to firmly limit thinner materials and the possibility of squeezing and deforming the materials is reduced is solved.

Description

Ultra-thin strip steel slitting machine

Technical Field

The invention relates to the technical field of slitting machines, in particular to an ultra-thin strip steel slitting machine.

Background technique

The longitudinal shearing machine can cut the steel coil into suitable widths and then reel it up. After searching, the patent with application number CN202011364450.0 discloses a longitudinal shearing machine with adjustable feeding width and length of steel sheet coil. The feeding mechanism can transport and fix the steel sheet, and can feed the steel sheet intermittently during shearing. No manual feeding is required, saving time and effort.

The above-mentioned device uses two pressure rods to position the material, passes the material through the two pressure rods, and then transports it to the cutting table for cutting. When fixing, it is necessary to adjust the distance between the two pressure rods according to the thickness of the material. For ultra-thin strip steel, due to the small thickness of the material, in order to ensure the limitation of the material, the distance between the two pressure rods needs to be close enough, which may easily cause the pressure rods to squeeze the material too much. Ultra-thin strip steel is easily squeezed and deformed due to its thinness, which may easily cause material deformation in the process of limiting the material and affect the subsequent cutting process. If the distance between the two pressure rods is slightly far, it is easy to make the gap between the two pressure rods too large, and the range of movement of the thinner strip steel between the two pressure rods may easily exceed the thickness of the strip steel itself, causing the strip steel to have a large displacement during the cutting process.

Summary of the invention

In view of the deficiencies in the prior art, the present invention provides an ultra-thin strip steel longitudinal shearing machine, which solves the problem that the prior longitudinal shearing machine is difficult to firmly limit the thinner material, while reducing the possibility of squeezing and deforming the material.

To achieve the above object, the present invention provides the following technical solutions: an ultra-thin strip steel slitting machine, comprising a slitting machine body and a support frame, a bottom plate is installed between the two sides of the slitting machine body, a long groove adapted to the cutting knife of the slitting machine body is opened on the top of the bottom plate, and a limiting component for limiting the strip steel and cleaning the burrs on the lower surface of the strip steel after cutting is fixedly connected to the top of the support frame;

The limiting assembly includes a supporting assembly for supporting the steel strip from multiple points at different heights, an extrapolation assembly for changing the shape of the steel strip is installed at one end of the supporting assembly close to the base plate, and a grinding assembly for removing burrs of the steel strip is installed at one end of the extrapolation assembly away from the base plate.

Preferably, the support frame comprises a support plate, a plurality of rollers are installed at the bottom of the support plate, a support rod is fixedly connected to the top of the support plate, and the support assembly is installed on the support rod.

Preferably, the support assembly includes a long plate fixed to the support frame, the long plate includes an upper inclined plate close to one end of the bottom plate, the upper inclined plate is fixedly connected to an arc-shaped plate on the side away from the bottom plate, the push-out assembly is installed on the arc-shaped plate, the end of the arc-shaped plate away from the upper inclined plate is fixedly connected to a V-shaped plate, the end of the V-shaped plate away from the arc-shaped plate is fixedly connected to a lower inclined plate, the upper inclined plate, the arc-shaped plate, the V-shaped plate and the lower inclined plate are an integrated structure, and the grinding assembly is installed on the lower inclined plate.

Preferably, the grinding assembly includes an outer frame installed on the top of the lower inclined plate, a rotating rod is rotatably connected between the two sides of the outer frame, a grinding wheel corresponding to the cutting knife of the longitudinal shear machine body is fixedly connected to the outer side of the rotating rod, a material leakage groove corresponding to the grinding wheel is opened on the top of the lower inclined plate, both sides of the grinding wheel are chamfered, and a motor for driving the rotating rod to rotate is fixedly connected to one side of the outer frame.

Preferably, both sides of the grinding wheel are fixedly connected with a cylinder sleeved on the outside of the rotating rod, the outer side of the cylinder is fixedly connected with a plurality of elastic plates, the side of the elastic plate away from the cylinder is fixedly connected with a rubber block, and the rubber block is provided with an anti-slip groove in the same length direction as the support assembly.

Preferably, a corner guard plate is slidably connected to the top of the support assembly, elastic arc plates are fixedly connected to both sides of the lower inclined plate, and a traction rope is fixedly connected to one side of the corner guard plate.

Preferably, a triangular block is installed on the support frame, a debris frame is installed on the top of the triangular block, the bottoms of the lower inclined plate and the V-shaped plate are fixedly connected with the triangular frame, and a notch is opened at the bottom of the V-shaped plate.

Preferably, one end of the triangular block is fixedly connected to a side plate, the debris frame is slidably connected to the triangular block, the top of the triangular block is slidably connected to a push plate, a spring is fixedly connected between the side plate and the push plate, and the end of the traction rope away from the corner guard is fixedly connected to the debris frame.

Preferably, the push-out assembly includes an arc frame installed at the bottom of the arc plate, an opening penetrating the arc plate is provided at the top of the arc frame, a pad is fixedly connected to the bottom of the arc frame, a threaded rod with one end movably extending to the inside of the arc frame is provided at the bottom of the pad, a handle is fixedly connected to the bottom of the threaded rod, and a protrusion adapted to the arc frame is installed at the top of the threaded rod, and the protrusion can rotate with the threaded rod as the axis.

Compared with the prior art, the present invention provides an ultra-thin strip steel slitting machine, which has the following beneficial effects:

1. Through the setting of the limit assembly, the higher end of the strip is on the support assembly, and the bottom end of the strip is supported by the bottom plate after the middle of the strip is suspended in the air. The support assembly makes the support point of the bottom of the strip located at the end of the bottom plate close to the support assembly, so that the weight of the strip itself will squeeze the strip on the bottom plate, so that the part of the strip above the bottom plate is close to the bottom plate, and the weight of the strip itself is used to squeeze the strip to achieve the limitation of the strip. For ultra-thin strips, since the weight of the ultra-thin strips is relatively small, the squeezing force on the strip on the bottom plate is also small, so the strip will not bend due to excessive squeezing force.

2. By setting up the support assembly, not only the weight of the strip is used to make the strip close to the bottom plate, thus limiting the position of the strip, but also the weight of the strip can be used to scrape the burrs on the bottom of the strip during cutting.

3. Through the set grinding component, cooperate with the support component to clean the burrs at the bottom of the strip, clean the burrs generated when the strip is cut from multiple directions in two steps, which can prevent the burrs from being pushed to other directions during cleaning and resulting in incomplete cleaning.

4. The elastic plates and rubber blocks are provided to fix the strip during the process of grinding and removing the burrs, preventing the grinding wheel grinding the strip from the side from pushing the strip to move laterally.

5. By setting the corner guard, different positions of the corner guard can be rubbed against the strip steel, so that the corner guard can remove the burrs of the strip steel for a longer time, and prevent the support component from directly rubbing against the strip steel, resulting in the inability to continue to grind the burrs of the strip steel after the support component is smooth.

6. By setting up the debris frame and traction rope, the debris that continues to increase during the strip cutting process can be used to drive the corner guard to move automatically, so that different positions of the corner guard can rub against the burrs of the strip, preventing a certain position of the corner guard from being rubbed smooth by the burrs of the strip for a long time and then unable to remove the burrs on the strip, so that the corner guard can remove the burrs on the strip for a longer time.

7. Through the setting of the push-out assembly, the position of the bottom support point of the strip can be adjusted, so that the bottom of the strip of different thicknesses can be limited on the bottom plate for easy cutting, while reducing the possibility of the strip being squeezed and bent, and adapting to the longitudinal shearing requirements of strips of different specifications.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

FIG1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a schematic structural diagram of a support frame and a limiting assembly of the present invention;

FIG3 is a schematic structural diagram of a limit assembly and a bottom plate of the present invention;

FIG4 is a schematic structural diagram of a grinding assembly according to the present invention;

FIG5 is a schematic diagram of the structure of the corner guard plate and the debris frame of the present invention;

FIG6 is a partial cutaway view of the corner guard and the support assembly of the present invention;

FIG7 is a schematic diagram of the structure of the triangular block and the debris frame of the present invention;

FIG8 is a schematic diagram of the structure of the support assembly and the extrapolation assembly of the present invention;

FIG. 9 is a schematic diagram of the structure of the extrapolation assembly of the present invention.

In the figure: 1. longitudinal shearing machine body; 2. supporting frame; 3. bottom plate; 4. limiting assembly; 41. supporting assembly; 411. upper inclined plate; 412. arc plate; 413. V-shaped plate; 414. lower inclined plate; 42. push-out assembly; 421. arc frame; 422. pad; 423. threaded rod; 424. bump; 43. grinding assembly; 431. outer frame; 432. rotating rod; 433. grinding wheel; 5. cylinder; 6. elastic plate; 7. rubber block; 8. corner guard plate; 9. elastic arc plate; 10. traction rope; 11. triangular block; 12. debris frame; 13. triangular frame; 14. side plate; 15. spring.

Detailed ways

The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

The longitudinal shear is a device used to cut the steel strip into suitable width and rewind it. During the working process, the steel strip is first transported to the cutting position, and then the strip at the cutting position is limited to prevent the strip from moving during the cutting process. Then a tool is used to cut the steel strip into suitable width, and finally the cut strip is transported and rolled up. When limiting the steel strip, the steel strip is generally passed between two round bars, which requires controlling the distance between the two round bars. Neither can the gap between the two round bars be too large to cause the steel strip to move during the cutting process, nor can the gap between the two round bars be too small to cause the steel strip to be squeezed and deformed. For materials with a smaller thickness such as ultra-thin strip, the control of the gap size needs to be more strict, because the smaller thickness also causes the steel strip to deform more easily. Therefore, the method of using two round bars to limit the steel strip is more difficult to use. The present invention proposes to use other methods to limit the steel strip, which can prevent the steel strip from being deformed due to excessive force while applying force to the steel strip to limit it.

Embodiment 1

Since the positioning requirements of ultra-thin steel strip are relatively high, neither a large extrusion pressure can be generated on the steel strip, nor a large space for movement can be left for the steel strip. Therefore, this embodiment uses the weight of the steel strip itself to limit the steel strip, so that the cut position of the steel strip is close to the cutting table, and at the same time, it also prevents the problem of excessive force on the steel strip from deforming. Referring to Figures 1 to 3, an embodiment of the present invention is provided, which provides an ultra-thin steel strip longitudinal shearing machine, which is composed of a longitudinal shearing machine body 1 and a support frame 2. Both sides of the longitudinal shearing machine body 1 A base plate 3 is installed in between, and a long groove compatible with the cutting knife of the longitudinal shear machine body 1 is opened on the top of the base plate 3. A limiting component 4 is fixedly connected to the top of the support frame 2 for limiting the strip and cleaning the burrs on the lower surface of the strip after cutting. The limiting component 4 is composed of a supporting component 41 for supporting the strip from multiple points at different heights. An extension component 42 for changing the shape of the strip is installed at one end of the support component 41 close to the base plate 3, and a grinding component 43 for removing burrs on the strip is installed at the end of the extension component 42 away from the base plate 3.

The strip steel passes between the cutting blade of the longitudinal shear body 1 and the bottom plate 3, then moves along the support assembly 41, and finally passes between the support assembly 41 and the grinding assembly 43. The push-out assembly 42 pushes the strip steel away from one end of the support assembly 41. The higher end of the strip steel is on the support assembly 41, and the bottom end of the strip steel is supported by the bottom plate 3 after the middle of the strip steel is suspended. The support assembly 41 makes the support point of the bottom of the strip steel located at the end of the bottom plate 3 close to the support assembly 41, so that the weight of the strip steel itself will squeeze the strip steel on the bottom plate 3, so that the strip steel The portion of steel above the bottom plate 3 is all pressed against the bottom plate 3, and the weight of the strip is used to squeeze the strip to limit the position of the strip. For ultra-thin strips, since the weight of the ultra-thin strips is relatively small, the squeezing force on the strip on the bottom plate 3 is also small, so the strip will not bend due to excessive squeezing force. After the slitting machine body 1 is started, it drives the strip to move from the slitting machine body 1 to the grinding assembly 43. The cutting knife of the slitting machine body 1 cuts the strip into a suitable width, and the cut strip is grinded to remove burrs when passing through the grinding assembly 43.

In order to limit the strip so that it does not move when being cut, the present embodiment proposes a support assembly 41, which is composed of a long plate fixed to the support frame 2, and the long plate includes an upper inclined plate 411 close to one end of the bottom plate 3, and the upper inclined plate 411 is fixedly connected to an arc plate 412 on the side away from the bottom plate 3, and the push-out assembly 42 is installed on the arc plate 412, and the end of the arc plate 412 away from the upper inclined plate 411 is fixedly connected to a V-shaped plate 413, and the end of the V-shaped plate 413 away from the arc plate 412 is fixedly connected to a lower inclined plate 414, the upper inclined plate 411, the arc plate 412, the V-shaped plate 413 and the lower inclined plate 414 are an integrated structure, and the grinding assembly 43 is installed on the lower inclined plate 414. 1, and then slides over the top of the upper inclined plate 411, the curved plate 412, the V-shaped plate 413 and the lower inclined plate 414 in turn. Due to the large slope of the curved plate 412, after the upper half of the strip is placed on the curved plate 412 and the lower inclined plate 414, a distance below the curved plate 412 is suspended in the air, and then the bottom of the strip falls on the bottom plate 3. The weight of the suspended part of the strip presses one end of its bottom on the bottom plate 3, so that the strip is relatively flat within a length on the bottom plate 3. At the same time, the weight of the strip itself is used to limit the strip, which can prevent the strip from moving when being cut. Since the weight of the suspended part of the strip is limited, the strip will not be squeezed and bent, thus completing the limitation of the strip and preventing the strip from being squeezed and deformed.

Due to the existence of the V-shaped plate 413, the upper part of the strip is placed on the arc plate 412 and the lower inclined plate 414, while the strip located between the arc plate 412 and the lower inclined plate 414 is suspended in the air. The weight of this part of the strip pulls the strip on the lower inclined plate 414 downward, causing the strip to generate a force to press the lower inclined plate 414 downward. Since the connection between the V-shaped plate 413 and the lower inclined plate 414 is an acute angle, the strip pulled downward is scraped when passing through the acute angle, which can clean the burrs under the strip when the strip is squeezed downward by the cutting knife for cutting, and scrape off the burrs under the strip after the strip is cut.

The present embodiment also improves the structure of the support frame 2 so that the support frame 2 can be easily moved. The support frame 2 is composed of a support plate, a plurality of rollers are installed at the bottom of the support plate, a support rod is fixedly connected to the top of the support plate, and a support assembly 41 is installed on the support rod. When the longitudinal shearing machine needs to be equipped with a limit assembly 4, the staff manually pushes or uses a forklift to push the limit assembly 4 to the side of the longitudinal shearing machine body 1, and then fixes the support frame 2 for use, so as to facilitate the limit assembly 4 to be moved to a suitable position.

Embodiment 2

Since the weight of the ultra-thin strip is relatively light, only the gravity of the strip above the V-shaped plate 413 is used to scrape the burrs, which has limited effect on removing the burrs. At the same time, part of the burrs at the bottom of the strip will be pushed to the side of the strip. Therefore, it is necessary to strengthen the ability to clean the burrs after the strip is cut. Referring to Figures 1 to 4, on the basis of Example 1, this embodiment proposes a grinding assembly 43, which consists of an outer frame 431 installed on the top of the lower inclined plate 414, and a rotating rod 432 is rotatably connected between the two sides of the outer frame 431. A grinding wheel 433 corresponding to the cutting knife of the longitudinal shearing machine body 1 is fixedly connected to the outer side of the rotating rod 432. A leakage groove corresponding to the grinding wheel 433 is provided on the top of the lower inclined plate 414, and both sides of the grinding wheel 433 are chamfered. One side of the outer frame 431 is fixedly connected to The motor is used to drive the rotating rod 432 to rotate, and the motor drives the rotating rod 432 and the grinding wheel 433 to rotate. When the strip steel passes through the sharp angle between the V-shaped plate 413 and the lower inclined plate 414 and is scraped, the burrs on the bottom of the strip steel are partially scraped off, and partially pushed to the side of the strip steel. Since both sides of the grinding wheel 433 are chamfered, the thickness of the outer ring of the grinding wheel 433 is reduced, so that the outer side of the grinding wheel 433 can enter the gap between the two strip steels after being cut, and the burrs in the gap between the two strip steels will not be pushed downward. The rotating grinding wheel 433 grinds the burrs on the side of the strip steel, and cooperates with the support component 41 to clean the burrs on the bottom of the strip steel. The burrs generated when the strip steel is cut are cleaned from multiple directions in two steps, which can prevent the burrs from being pushed to other directions when cleaning the burrs, resulting in incomplete cleaning.

Since the grinding wheel 433 grinds the burrs of the steel strip on the side of the steel strip, it may push the steel strip to move laterally, resulting in the strip being unable to be wound to the correct position after deburring. Therefore, it is necessary to fix the steel strip when deburring it. In this embodiment, cylinders 5 are installed on the outside of the rotating rod 432 on both sides of the grinding wheel 433. A plurality of elastic plates 6 are fixedly connected to the outer side of the cylinder 5. A rubber block 7 is fixedly connected to the side of the elastic plate 6 away from the cylinder 5. The rubber block 7 is provided with an anti-skid groove in the same length direction as the support assembly 41. During the rotation of the grinding wheel 433, the cylinder 5, the elastic plate 6 and the rubber block 7 are driven to rotate synchronously. When the rubber block 7 rotates to a position close to the lower inclined plate 41, 4, the rubber block 7 contacts with the lower inclined plate 414, and then the elastic plate 6 and the rubber block 7 are driven to continue rotating. In this process, the elastic plate 6 gradually approaches the lower inclined plate 414, causing the elastic plate 6 to be squeezed and bent, and the rubber block 7 squeezes the strip steel onto the lower inclined plate 414. The anti-slip groove prevents the strip steel squeezed on the lower inclined plate 414 from moving along the width direction of the lower inclined plate 414 until the elastic plate 6 and the rubber block 7 are driven away from the lower inclined plate 414. The multiple rubber blocks 7 on the outside of the cylinder 5 are squeezed onto the strip steel in turn by the elastic plate 6, which can fix the strip steel during the process of grinding and removing the burrs of the strip steel, preventing the grinding wheel 433 that grinds the strip steel from the side from pushing the strip steel to move laterally.

Embodiment 3

Since the sharp angle between the V-shaped plate 413 and the lower inclined plate 414 is constantly rubbing against the burrs on the bottom of the strip, the sharp angle wears faster. When the sharp angle is smooth, it cannot play the role of grinding the burrs on the bottom of the strip. In order to ensure the grinding ability of the support assembly 41 on the bottom of the strip, this embodiment sets a protective structure above the support assembly 41. Referring to Figures 1 to 7, on the basis of Example 1, it is specifically composed of a corner guard plate 8 slidably connected to the top of the support assembly 41, and both sides of the lower inclined plate 414 are fixedly connected with elastic arc plates 9. One side of the corner guard plate 8 is fixedly connected with a traction rope 10. The elastic arc plates 9 are on both sides of the corner guard plate 8 to limit the corner guard plate 8. When the strip moves along the support assembly 41, the strip The burrs at the bottom rub against the corner guard 8. Since the cutting position of the steel strip is fixed, the contact position between the burrs of the steel strip and the corner guard 8 is also fixed. After the steel strip rubs against the corner guard 8 for a period of time, the traction rope 10 is pulled, thereby driving the corner guard 8 to a certain distance along the width of the support component 41. At this time, the corner guard 8 squeezes and bends the elastic arc plate 9. Only by pulling the traction rope 10, different positions of the corner guard 8 can be rubbed against the steel strip, so that the corner guard 8 can deburr the steel strip for a longer time. When most areas of the corner guard 8 are rubbed smooth, only the corner guard 8 on the support component 41 needs to be replaced. When the traction rope 10 is no longer pulled, the squeezed and bent elastic arc plate 9 pushes the corner guard 8 to the starting point.

Since debris is generated when the strip is polished for burrs, the debris needs to be collected. The present embodiment provides a structure for collecting the debris, which is composed of a triangular block 11 installed on a support frame 2. A debris frame 12 is installed on the top of the triangular block 11. The bottoms of the lower inclined plate 414 and the V-shaped plate 413 are fixedly connected with the triangular frame 13. A notch is provided at the bottom of the V-shaped plate 413. The debris of the strip scratched by the corner guard plate 8 slides to the notch, and then slides from the notch along the triangular frame 13 to the debris frame 12. The debris polished by the polishing assembly 43 of the strip falls from the leakage groove of the lower inclined plate 414, and then also slides along the triangular frame 13 to the debris frame 12. The debris generated by polishing the burrs can be automatically collected during the strip cutting process.

In order to automatically drive the corner guard 8 to move during the strip cutting process, so that the degree of friction between the corner guard 8 and the strip is more uniform, the present embodiment is provided with a structure for moving the corner guard 8 by utilizing the weight change of the collected debris, which is specifically composed of a side plate 14 installed at one end of the triangular block 11, a debris frame 12 is slidably connected to the triangular block 11, a push plate is slidably connected to the top of the triangular block 11, a spring 15 is fixedly connected between the side plate 14 and the push plate, and the end of the traction rope 10 away from the corner guard 8 is fixedly connected to the debris frame 12. When the debris frame When there is no debris inside 12, the spring 15 pushes the debris frame 12 to slide along the triangular block 11 to the highest point. As the debris on the strip is scraped and falls into the debris frame 12, the weight inside the debris frame 12 gradually increases. The debris frame 12 gradually squeezes and bends the spring 15 and slides downward along the triangular block 11 until the debris frame 12 is full and slides to the lowest point. During this process, the bottom of the triangular frame 13 is always above the debris frame 12, so the debris on the support assembly 41 can be guided into the debris frame 12.

In the process of the debris frame 12 sliding along the triangular block 11, the debris frame 12 pulls the corner guard plate 8 to move through the traction rope 10, so that different positions of the corner guard plate 8 rub against the burrs on the strip steel, preventing the contact position between the corner guard plate 8 and the strip steel from being rubbed smooth and unable to remove the burrs on the strip steel, so that the corner guard plate 8 can grind the burrs on the strip steel for a longer time. Since the weight of the debris in the debris frame 12 increases slowly, the speed at which the debris frame 12 pulls the corner guard plate 8 to move is also slow. Since the debris keeps falling into the debris frame 12, the debris frame 12 can even be filled up, making the debris frame 12 full. The weight of the body is increased to a large extent, so it can be ensured that the debris frame 12 will pull the corner guard 8 to move until the debris inside the debris frame 12 is cleared away. At this time, the spring 15 pushes the debris frame 12 to move to the starting point, and the elastic arc plate 9 also pushes the corner guard 8 to move to the starting point. The debris that continues to increase during the strip cutting process can be used to drive the corner guard 8 to move automatically, so that different positions of the corner guard 8 rub against the burrs of the strip, preventing a certain position of the corner guard 8 from being rubbed smooth by the burrs of the strip for a long time and then unable to remove the burrs on the strip, so that the corner guard 8 can remove the burrs on the strip for a longer time.

Embodiment 4

In order to adjust the center of gravity of the steel strip so that the support point of the steel strip falls on the bottom plate 3, so that the weight of the steel strip squeezes the steel strip on the bottom plate 3 for easy cutting, this embodiment proposes an extrapolation assembly 42, which is used to adjust the position of the support point at one end of the bottom of the steel strip. Referring to Figures 1 to 9, on the basis of Example 1, the extrapolation assembly 42 is composed of an arc frame 421 installed at the bottom of the arc plate 412, and an opening penetrating the arc plate 412 is provided at the top of the arc frame 421. A cushion block 422 is fixedly connected to the bottom of the arc frame 421, and a threaded rod 423 with one end movably extending to the inside of the arc frame 421 is provided at the bottom of the cushion block 422. A handle is fixedly connected to the bottom of the threaded rod 423, and a protrusion 424 adapted to the arc frame 421 is installed at the top of the threaded rod 423. The protrusion 424 can rotate with the threaded rod 423 as the axis, and the protrusion 424 is embedded in the arc frame 421. When When it is necessary to adjust the support position of the bottom of the strip, the staff turns the handle, thereby driving the threaded rod 423 to rotate, and then pushing the protrusion 424 to the outside of the arc frame 421. After the protrusion 424 protrudes to the outside of the arc plate 412, the strip originally resting on the arc plate 412 is now resting on the protrusion 424, so that the strip extends a distance in the direction close to the longitudinal shear machine body 1, and then the support point at the bottom of the strip is also moved a distance in the direction of the longitudinal shear machine body 1, until the support point at the bottom of the strip is located at the end of the bottom plate 3 close to the upper inclined plate 411. At this time, the weight of the strip itself squeezes one end of its bottom onto the bottom plate 3, so that a section of horizontal strip is formed on the bottom plate 3 for easy cutting, and the position of the support point at the bottom of the strip can be adjusted, so that the bottom of strips of different thicknesses can be limited on the bottom plate 3 for easy cutting, while reducing the possibility of the strip being squeezed and bent, to meet the longitudinal shearing needs of strips of different specifications.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (9)

1. An ultra-thin strip steel slitting machine, comprising a slitting machine body (1) and a support frame (2), characterized in that: a bottom plate (3) is installed between the two sides of the slitting machine body (1), a long groove adapted to the cutting blade of the slitting machine body (1) is opened on the top of the bottom plate (3), and a limiting component (4) for limiting the strip steel and cleaning the burrs on the lower surface of the strip steel after cutting is fixedly connected to the top of the support frame (2); The limiting assembly (4) comprises a supporting assembly (41) for supporting the steel strip from a plurality of points at different heights, an extrapolating assembly (42) for changing the shape of the steel strip is installed at one end of the supporting assembly (41) close to the base plate (3), and a grinding assembly (43) for removing burrs from the steel strip is installed at one end of the extrapolating assembly (42) away from the base plate (3). 2. The longitudinal shearing machine according to claim 1 is characterized in that: the support frame (2) includes a support plate, a plurality of rollers are installed at the bottom of the support plate, a support rod is fixedly connected to the top of the support plate, and the support assembly (41) is installed on the support rod. 3. The longitudinal shearing machine according to claim 1 is characterized in that: the support assembly (41) includes a long plate fixed to the support frame (2), the long plate includes an upper inclined plate (411) close to one end of the bottom plate (3), the upper inclined plate (411) is fixedly connected to an arc-shaped plate (412) on the side away from the bottom plate (3), the arc-shaped plate (412) is fixedly connected to one end away from the upper inclined plate (411) with a V-shaped plate (413), the V-shaped plate (413) is fixedly connected to one end away from the arc-shaped plate (412) with a lower inclined plate (414), and the upper inclined plate (411), the arc-shaped plate (412), the V-shaped plate (413) and the lower inclined plate (414) are an integrated structure. 4. The longitudinal shearing machine according to claim 1 is characterized in that: the grinding assembly (43) includes an outer frame (431) installed on the top of the lower inclined plate (414), a rotating rod (432) is rotatably connected between the two sides of the outer frame (431), and a grinding wheel (433) corresponding to the cutting knife of the longitudinal shearing machine body (1) is fixedly connected to the outer side of the rotating rod (432), a material leakage groove corresponding to the grinding wheel (433) is opened on the top of the lower inclined plate (414), both sides of the grinding wheel (433) are chamfered, and a motor for driving the rotating rod (432) to rotate is fixedly connected to one side of the outer frame (431). 5. The longitudinal shearing machine according to claim 4 is characterized in that: both sides of the grinding wheel (433) are fixedly connected with a cylinder (5) sleeved on the outside of the rotating rod (432), and the outer side of the cylinder (5) is fixedly connected with a plurality of elastic plates (6), and the side of the elastic plate (6) away from the cylinder (5) is fixedly connected with a rubber block (7), and the rubber block (7) is provided with an anti-slip groove in the same length direction as the support assembly (41). 6. The longitudinal shearing machine according to claim 3 is characterized in that: a corner guard plate (8) is slidably connected to the top of the support assembly (41), elastic arc plates (9) are fixedly connected to both sides of the lower inclined plate (414), and a traction rope (10) is fixedly connected to one side of the corner guard plate (8). 7. The longitudinal shearing machine according to claim 6 is characterized in that: a triangular block (11) is installed on the support frame (2), a debris frame (12) is installed on the top of the triangular block (11), the bottoms of the lower inclined plate (414) and the V-shaped plate (413) are fixedly connected with the triangular frame (13), and a notch is opened at the bottom of the V-shaped plate (413). 8. The longitudinal shearing machine according to claim 7 is characterized in that: one end of the triangular block (11) is fixedly connected to a side plate (14), the debris frame (12) is slidably connected to the triangular block (11), the top of the triangular block (11) is slidably connected to a push plate, a spring (15) is fixedly connected between the side plate (14) and the push plate, and the end of the traction rope (10) away from the corner guard plate (8) is fixedly connected to the debris frame (12). 9. The longitudinal shearing machine according to claim 1 is characterized in that: the push-out assembly (42) includes an arc frame (421) installed at the bottom of the arc plate (412), the top of the arc frame (421) is provided with an opening that passes through the arc plate (412), the bottom of the arc frame (421) is fixedly connected with a cushion block (422), the bottom of the cushion block (422) is provided with a threaded rod (423) with one end movably extending to the inside of the arc frame (421), the bottom of the threaded rod (423) is fixedly connected with a handle, and the top of the threaded rod (423) is provided with a protrusion (424) that matches the arc frame (421).