CN119870574B - Hot rolled steel plate cutting device - Google Patents

Abstract

The invention relates to the technical field of steel plate cutting, and particularly discloses a hot rolled steel plate cutting device which comprises a machine base, a front positioning module, a rear positioning module, a transverse cutter and a longitudinal cutter, wherein a bearing plate is vertically and horizontally slid on the inner side of the machine base, a movable frame is horizontally and horizontally slid on the machine base, a left positioning module, a right positioning module, a centering module and a pushing module are further arranged on the machine base, the left positioning module and the right positioning module comprise hydraulic oil tanks arranged on the movable frame, and a plurality of hydraulic rods communicated with the hydraulic oil tanks are horizontally arranged on opposite surfaces of the left side and the right side of the movable frame at intervals. The clamping rod has the beneficial effects that the clamping rod clamps the hot-rolled steel plate in the left-right direction, the clamping rod can be abutted against the end surface of the hot-rolled steel plate through the extension of the hydraulic rod for different lengths no matter what the end surface of the hot-rolled steel plate is, the positioning of the hot-rolled steel plate in the left-right direction is completed, the pushing surface of the pushing table is tightly attached to the rear side surface of the hot-rolled steel plate, and the clamping of the clamping plate is matched, so that the deviation during transverse cutting and longitudinal cutting is avoided.

Description

Hot rolled steel plate cutting device

Technical Field

The invention relates to the technical field of steel plate cutting, and in particular to a hot-rolled steel plate cutting device.

Background Art

Hot rolled steel plate is a product that is made by rolling and cooling steel billets at high temperatures into thin or thick plates. The material of hot rolled steel plate is mainly carbon steel, including low carbon steel, medium carbon steel, etc. Low carbon steel has good plasticity, toughness and welding properties, and is often used in steel beams and columns in building structures and some body parts in automobile manufacturing. Medium carbon steel has higher strength and is suitable for occasions that need to withstand larger loads.

The Chinese patent with the authorization announcement number CN113649648B discloses a hot-rolled steel plate cutting device, which belongs to the technical field of hot-rolled steel plate processing equipment, and comprises a conveying roller frame, on which a hot-rolled steel plate is arranged, a plurality of limiting mechanisms are arranged on both sides of the conveying roller frame, a cutting mechanism is arranged on the conveying roller frame, a waste material processing mechanism is arranged on the side of the conveying roller frame away from the cutting mechanism, and the waste material processing mechanism comprises a fixed frame, on which a material guide component and a crushing component are arranged. The beneficial effects of the patent are as follows: the structure is simple and easy to use, the hot-rolled steel plate is supported by a plurality of rollers arranged on the conveying roller frame, the hot-rolled steel plate is kept in the middle of the conveying roller frame by the limiting mechanisms on both sides of the conveying roller frame, the two sides of the hot-rolled steel plate are trimmed by the cutting mechanism, the waste edge is guided to the crushing component by the material guide component of the waste material processing mechanism, and the long strip waste edge is crushed into small pieces of waste edge by the crushing component, which is convenient for collection and processing.

The head and tail of the steel plate are often tongue-shaped and fish-tail-shaped. Since the two ends are uneven, they cannot be clamped and fixed well. During the rapid rotation of the cutting tool, the hot-rolled steel plate is easily offset, resulting in low dimensional accuracy after cutting.

Summary of the invention

The present invention provides a hot-rolled steel plate cutting device, aiming to solve the technical problem that the head and tail of the steel plate in the related art are often tongue-shaped and fish-tail-shaped, and since the two ends are uneven, the two ends cannot be well clamped and fixed, and the hot-rolled steel plate is easily offset during the rapid rotation of the cutting tool, resulting in low dimensional accuracy after cutting.

A hot-rolled steel plate cutting device of the present invention comprises: a machine base, front and rear positioning modules, a transverse cutter and a longitudinal cutter; a bearing plate is slid up and down on the inner side of the machine base, a movable frame is slid horizontally left and right on the machine base, and a left and right positioning module, a centering module and a push module are also provided on the machine base; the left and right positioning modules comprise a hydraulic oil tank arranged on the movable frame, and a plurality of hydraulic rods connected to the hydraulic oil tank are horizontally installed at intervals on the left and right opposite surfaces of the movable frame, and the telescopic parts of the hydraulic rods are fixedly installed with vertically arranged clamping rods, and a pump body is provided on the hydraulic oil tank; The middle module includes a sliding frame that is symmetrical left and right and slides horizontally on the moving frame, a connecting plate located between the two sliding frames and elastically slidably connected to the two sliding frames at the same time, a positioning rod that slides vertically on the connecting plate and has its axis horizontally arranged along the front-to-back direction, and two positioning grooves arranged on the machine base front and back, and the positioning grooves are located on the path of the positioning rod moving left and right; the pushing module includes a pushing platform that slides horizontally front and back on the right side of the machine base, a clamping plate that slides vertically on the pushing platform, a feeding hole is provided on the front side of the machine base corresponding to the pushing platform, and a longitudinal cutter is provided on the machine base near the feeding hole.

Beneficial effects: The positioning plate completes the positioning of the hot-rolled steel plate in the front-to-back direction, the hydraulic rods on the left and right sides extend, and the hydraulic rods drive the clamping rods to move inward at the same time. The clamping rods on both sides respectively abut against the left and right end faces of the hot-rolled steel plate, thereby clamping the hot-rolled steel plate on the inside. Multiple clamping rods will abut against different positions of the end face of the hot-rolled steel plate front and back. No matter what shape the end face of the hot-rolled steel plate is, the clamping rod can be abutted against the end face of the hot-rolled steel plate by extending the hydraulic rods to different lengths. The cooperation of multiple clamping rods completes the clamping and positioning of the hot-rolled steel plate in the left and right directions. Since the hot-rolled steel plate is positioned in the front, back, left and right directions, it will not be offset when cut by the transverse cutter, thereby ensuring the cutting accuracy. When the hot-rolled steel plate moves to the right side of the machine base, the positioning rod passes through the positioning groove, and the positioning rod will fall into the positioning groove, thereby completing the positioning of the middle position of the hot-rolled steel plate after transverse cutting. The push cylinder pushes the push table forward, so that the push surface of the push table is close to the rear side of the hot-rolled steel plate. At this time, the front and rear sides of the hot-rolled steel plate have been completely horizontal after cutting, and the push surface can be completely in contact with the rear side of the hot-rolled steel plate to ensure the positioning effect of the hot-rolled steel plate. Then the clamping cylinder drives the clamping plate to descend to clamp the hot-rolled steel plate. The rear side of the hot-rolled steel plate is in close contact with the push surface of the push table, and the clamping plate is pressed in the vertical direction to ensure the positioning and clamping effect of the hot-rolled steel plate, avoiding deviation during longitudinal cutting. It effectively ensures the accuracy of the hot-rolled steel plate during transverse and longitudinal cutting.

Preferably, two groups of lifting cylinders are arranged at the front and rear inner sides of the machine base, and the telescopic parts of each group of lifting cylinders are fixedly mounted with a horizontally arranged bearing plate, and the two bearing plates are arranged at intervals at the front and rear sides, with a vertically penetrating passage between the two.

Preferably, a first screw is rotatably installed on the inner side of the machine base, the axis of the first screw is horizontally arranged in the left-right direction, and the position of the first screw corresponds to the channel between the two supporting plates up and down, and a moving block is screwed on the first screw, the moving block slides with the front and rear supporting plates, and the moving block is fixedly connected to the moving frame.

The effect is that the movable frame can be driven to move left and right to transport the hot-rolled steel plates.

Preferably, a second lead screw is rotatably installed on both sides of the movable frame, and the axis of the second lead screw is horizontally arranged along the front-to-back direction. Two adjustment blocks are installed on the second lead screw, which cooperate with the front-to-back horizontal sliding of the movable frame. The frontmost and rearmost hydraulic rods on each side are respectively fixed to the corresponding adjustment blocks.

The effect is that when the adjusting block moves, it can drive the hydraulic rod to move. By controlling the position of the outermost hydraulic rod, it can adapt to hot-rolled steel plates of different widths, thereby improving the applicability of the device.

Preferably, telescopic rods are fixedly mounted on both opposite left and right sides of the mobile frame, the telescopic rods are composed of two outer rods and an inner rod that slide in cooperation with each other, and one end of the telescopic rod away from the mobile frame is fixedly connected to the sliding frame.

Preferably, the sliding frame is in a T-shaped structure, and the sliding frame is slidably connected to the fixing seat via a spring.

Preferably, the left and right sides of the positioning groove transition to the upper surface of the base through an inclined surface or an arc surface so that the positioning rod can be disengaged from the positioning groove.

The effect is that when the moving frame returns to the left after cutting is completed, it is convenient for the positioning rod to be disengaged from the positioning groove to complete the reset.

Preferably, a pushing cylinder is installed on the rear side of the machine base, and the pushing platform is fixed to the telescopic part of the pushing cylinder. The pushing platform is L-shaped, and a clamping cylinder is installed at the bottom of the pushing platform. The telescopic part of the clamping cylinder extends to above the pushing platform, and the clamping plate is fixed to the telescopic part of the clamping cylinder.

The effect is that the pushing cylinder pushes the pushing platform forward, so that the pushing surface of the pushing platform is in close contact with the rear side of the hot-rolled steel plate. The front and rear sides of the hot-rolled steel plate have been completely horizontal after cutting, and the pushing surface can be completely in contact with the rear side of the hot-rolled steel plate, thereby ensuring the positioning effect of the hot-rolled steel plate.

Preferably, two groups of transverse cutters are provided and are respectively located on the front and rear sides of the machine base, and the transverse cutters are both located on the path of the workpiece moving to the right.

Preferably, a cutting table is installed at the front side of the machine base, the cutting table corresponds to the position of the feeding hole, a longitudinal cutter is installed on the cutting table, and two longitudinal cutters are arranged at intervals on the left and right.

By adopting the above technical solution, the beneficial effects of the present invention are as follows:

1. The positioning plate completes the front-to-back positioning of the hot-rolled steel plate. The hydraulic rods on the left and right sides extend, and the hydraulic rods drive the clamping rods to move inward at the same time. The clamping rods on both sides abut against the left and right end faces of the hot-rolled steel plate, respectively, thereby clamping the hot-rolled steel plate on the inside. Multiple clamping rods will abut against different positions of the end face of the hot-rolled steel plate. No matter what shape the end face of the hot-rolled steel plate is, the clamping rod can be abutted against the end face of the hot-rolled steel plate by extending the hydraulic rods to different lengths. The cooperation of multiple clamping rods completes the clamping positioning of the hot-rolled steel plate in the left and right directions. Since the hot-rolled steel plate is positioned in the front, back, left and right directions, it will not deviate when cut by the transverse cutter, ensuring the cutting accuracy. The push cylinder pushes the push table forward, so that the push surface of the push table is close to the rear side of the hot-rolled steel plate. At this time, the front and rear sides of the hot-rolled steel plate have been completely horizontal after cutting, and the push surface can be completely in contact with the rear side of the hot-rolled steel plate to ensure the positioning effect of the hot-rolled steel plate. Then the clamping cylinder drives the clamping plate to descend to clamp the hot-rolled steel plate. The rear side of the hot-rolled steel plate is in close contact with the push surface of the push table, and the clamping plate is pressed in the vertical direction to ensure the positioning and clamping effect of the hot-rolled steel plate, avoiding deviation during longitudinal cutting. It effectively ensures the accuracy of the hot-rolled steel plate during transverse and longitudinal cutting.

2. When the hot-rolled steel plate moves to the right side of the machine base, the positioning rod will fall into the positioning groove when passing through the positioning groove, thereby completing the positioning of the middle position of the hot-rolled steel plate after transverse cutting, facilitating accurate longitudinal cutting of the hot-rolled steel plate.

BRIEF DESCRIPTION OF THE DRAWINGS

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

FIG. 2 is a top view of the base of the present invention.

FIG. 3 is an exploded schematic diagram of the base and the movable frame of the present invention.

FIG. 4 is a schematic structural diagram of a mobile rack of the present invention.

FIG. 5 is an exploded schematic diagram of the movable frame and the fixed base of the present invention.

FIG. 6 is a schematic structural diagram of a hydraulic rod of the present invention.

FIG. 7 is a schematic structural diagram of the push table of the present invention.

FIG8 is a schematic diagram of the clamping state of the hot-rolled steel plate by the clamping rod of the present invention.

FIG. 9 is a schematic diagram showing the state of the hot-rolled steel plate of the present invention when it is conveyed to the right side.

Reference numerals:

10. Machine base; 11. Lifting cylinder; 12. Loading plate; 13. Supporting platform; 14. Hot-rolled steel plate; 15. Cutting through hole; 20. Driving motor; 21. First lead screw; 22. Moving block; 23. Moving frame; 30. Positioning cylinder; 31. Positioning plate; 40. Hydraulic oil tank; 41. Hydraulic rod; 42. Clamping rod; 43. Second lead screw; 44. Adjusting block; 50. Horizontal cutter; 60. Positioning rod; 61. Connecting plate; 62. Fixed seat; 63. Sliding frame; 64. Telescopic rod; 65. Positioning groove; 70. Pushing cylinder; 71. Pushing platform; 72. Clamping cylinder; 73. Clamping plate; 74. Through hole; 80. Cutting table; 81. Longitudinal cutter.

DETAILED DESCRIPTION

Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

As shown in Figures 1 to 9, a specific embodiment of a hot-rolled steel plate cutting device of the present invention includes a bearing module, a feeding module, a front and rear positioning module, a left and right positioning module, a transverse cutting module, a centering module, a pushing module and a longitudinal cutting module.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the carrier module includes a base 10 . The base 10 is a rectangular structure. In this embodiment, the length direction of the base 10 is defined as the left-right direction, and the width direction of the base 10 is defined as the front-back direction.

Two sets of lifting cylinders 11 are arranged at the front and back of the inner side of the machine base 10. Both sets of lifting cylinders 11 are fixedly mounted on the machine base 10, and each set is provided with at least two. A bearing plate 12 is fixedly mounted on the telescopic part of each set of lifting cylinders 11. The bearing plate 12 is arranged horizontally. The bearing plate 12 is used to place the hot-rolled steel plate 14. In this embodiment, the left and right ends of the hot-rolled steel plate 14 are tongue-shaped and fish-tail-shaped. The lifting cylinder 11 can drive the bearing plate 12 to rise and fall, thereby driving the hot-rolled steel plate 14 to rise and fall.

The two carrying plates 12 are arranged at intervals in front and back, and a vertically penetrating passage is provided between the two, and the passage is used to ensure that the feeding module can move back and forth left and right to transport the hot-rolled steel plate 14 .

The left ends of the bearing plates 12 are in contact with the left inner wall of the base 10, and there is a certain distance between the right ends of the bearing plates 12 and the right wall of the base 10. Two support platforms 13 are fixedly installed on the right inner wall of the base 10. The two support platforms 13 are arranged horizontally with a front-to-back interval like the bearing plates 12, and in the initial state, the support platforms 13 are flush with the upper surface of the bearing plates 12. When the hot-rolled steel plate 14 moves to the right, the support platforms 13 can play a bearing role on the hot-rolled steel plate 14.

There is a certain distance between the supporting platform 13 and the carrying plate 12 to ensure that the pushing module can push the hot-rolled steel plate 14 .

A rectangular cutting hole 15 is provided on one side of the carrier plate 12 that abuts against the front and rear side walls of the base 10. The cutting hole 15 is used to ensure cutting of the front and rear sides of the hot-rolled steel plate 14 and to ensure the falling of the cut waste.

As shown in FIG. 2 , FIG. 3 and FIG. 4 , the feeding module includes a driving motor 20 , a first lead screw 21 , a moving block 22 and a moving frame 23 .

The first lead screw 21 is rotatably mounted inside the base 10 , the axis of the first lead screw 21 is horizontally arranged in the left-right direction, and the position of the first lead screw 21 corresponds to the channel between the two supporting plates 12 up and down. A driving motor 20 for driving the first lead screw 21 to rotate is installed on the side of the base 10 .

A moving block 22 is screwed onto the first lead screw 21, and the moving block 22 is located in the channel between the two bearing plates 12, and the front and rear side walls of the moving block 22 are respectively slidably matched with the front and rear bearing plates 12, so that when the first lead screw 21 rotates, the moving block 22 can be driven to reciprocate left and right.

A moving frame 23 is fixedly mounted on the moving block 22. In this embodiment, the moving frame 23 is in a U-shaped structure, and the two opposite side panels of the moving frame 23 are distributed in the left and right directions. It is particularly noted that the moving block 22 is located at the bottom of the right side panel of the moving frame 23, so the bottom of the left side panel of the moving frame 23 is suspended to prevent the moving frame 23 from interfering with the hot-rolled steel plate 14 placed on the left side bearing plate 12 when returning from the right side. When the hot-rolled steel plate 14 is clamped and positioned, the hot-rolled steel plate 14 needs to be located inside the moving frame 23.

The left and right positioning modules are installed on the moving frame 23. After the front and rear positioning modules and the left and right positioning modules complete the clamping and positioning of the hot-rolled steel plate 14, the first lead screw 21 rotates to drive the moving block 22 and the moving frame 23 to slide to the right, and the moving frame 23 drives the hot-rolled steel plate 14 to move to the right. During the movement of the hot-rolled steel plate 14, it will pass through the transverse cutting module, and the transverse cutting module completes the cutting of the front and rear sides of the hot-rolled steel plate 14.

As shown in FIG2 , the front and rear positioning modules include positioning cylinders 30 and positioning plates 31. Multiple positioning cylinders 30 are installed at intervals on the front and rear sides of the base 10. Positioning plates 31 are fixedly installed on the telescopic parts of the positioning cylinders 30. The positioning plates 31 are square plate-shaped structures, and the positioning plates 31 are located in the cutting through holes 15 between the bearing plate 12 and the front and rear side walls of the base 10. When the positioning cylinders 30 drive the positioning plates 31 to move inward, the front and rear directions of the hot-rolled steel plate 14 can be positioned.

The front and rear positioning modules are located at the left side of the base 10 , and the hot-rolled steel plate 14 is placed on the left side of the carrier plate 12 , thereby ensuring that the positioning plate 31 positions the front and rear sides of the hot-rolled steel plate 14 .

As shown in FIG. 5 and FIG. 6 , the left and right positioning modules include a hydraulic oil tank 40 , a hydraulic rod 41 and a clamping rod 42 .

A hydraulic oil tank 40 is fixedly installed on the top of the two panels opposite to each other on the left and right sides of the mobile frame 23, and the hydraulic oil tank 40 carries hydraulic oil. A plurality of hydraulic rods 41 are fixedly installed at intervals on the left and right opposite surfaces of the mobile frame 23, and the hydraulic rods 41 on the left and right sides are symmetrically arranged. The axis of the hydraulic rod 41 is arranged horizontally along the left and right directions, and the front and rear hydraulic rods 41 are parallel to each other. The end of the hydraulic rod 41 facing the inside is the telescopic end, and the telescopic end is fixedly installed with a clamping rod 42, which is a rod-shaped structure and is arranged vertically, and the lower end of the clamping rod 42 abuts against the upper surface of the bearing plate 12.

The multiple hydraulic rods 41 on each side are interconnected through oil pipes, and the hydraulic rods 41 on each side are connected to the hydraulic oil tank 40 on that side. A hydraulic pump (not shown in the figure) is installed on the hydraulic oil tank 40. The hydraulic pump can pump out the hydraulic oil in the hydraulic oil tank 40 and transport it to all the hydraulic rods 41, thereby controlling the extension and retraction of the hydraulic rods 41. The extension and retraction of the hydraulic rods 41 can drive the clamping rod 42 to move, thereby clamping and positioning the hot-rolled steel plate 14 on the inside.

When the hot-rolled steel plate 14 is located on the carrier plate 12 and on the inner side of the moving frame 23, the positioning cylinder 30 first drives the positioning plate 31 to move inward to complete the positioning of the hot-rolled steel plate 14 in the front-rear direction. Then the hydraulic pumps on the hydraulic oil tanks 40 on the left and right sides work at the same time, driving the hydraulic rods 41 on both sides to extend, and the hydraulic rods 41 will drive the clamping rods 42 to move inward at the same time. The clamping rods 42 on both sides are respectively abutted against the left and right end surfaces of the hot-rolled steel plate 14, thereby clamping the hot-rolled steel plate 14 on the inside. Since the left and right end surfaces of the hot-rolled steel plate 14 are uneven, tongue-shaped and fishtail-shaped, the telescopic length of the hydraulic rods 41 on each side is also different. When the clamping rods 42 abut against the end surface of the hot-rolled steel plate 14 and clamp it, the hydraulic rods 41 will no longer extend. The multiple clamping rods 42 will abut against different positions of the end surface of the hot-rolled steel plate 14. Since the end surface of the hot-rolled steel plate 14 is not flat, the front and rear directions of the clamping rods 42 are not on the same plane (as shown in Figure 8). Regardless of the shape of the end surface of the hot-rolled steel plate 14, the clamping rods 42 can be abutted against the end surface of the hot-rolled steel plate 14 by extending the hydraulic rod 41 to different lengths. The cooperation of the multiple clamping rods 42 completes the clamping and positioning of the hot-rolled steel plate 14 in both left and right directions.

As shown in FIG6 , the left and right positioning modules are also provided with adjustment units, and two groups of adjustment units are provided, one group being installed on the two left and right opposite panels of the moving frame 23. Each group of adjustment units includes a second lead screw 43 and an adjustment block 44.

The second lead screw 43 is rotatably mounted on the side of the moving frame 23, and the axis of the second lead screw 43 is horizontally arranged in the front-to-back direction. A motor driving the second lead screw 43 to rotate is mounted at the end thereof, and the second lead screw 43 is a forward and reverse lead screw. An adjustment block 44 is mounted at both the front and rear ends of the second lead screw 43, and the adjustment block 44 is horizontally slidably matched with the moving frame 23. When the second lead screw 43 rotates, the adjustment block 44 can be driven to move closer or farther away at the same time.

The frontmost and rearmost hydraulic rods 41 on each side are fixedly mounted on the corresponding adjustment blocks 44 (as shown in FIG. 6 ), so that when the adjustment blocks 44 move, the hydraulic rods 41 can be driven to move. By controlling the position of the outermost hydraulic rods 41, the hot-rolled steel plates 14 of different widths (lengths in the front-to-back direction) can be adapted, thereby improving the applicability of the device.

As shown in FIG2 , the transverse cutting module is a transverse cutter 50 installed on the machine base 10. Two groups of transverse cutters 50 are provided, and are respectively located on the front and rear sides of the machine base 10. The transverse cutters 50 are all located in the cutting through hole 15 between the carrier plate 12 and the machine base 10, and are located on the path of the hot-rolled steel plate 14 moving to the right. When the hot-rolled steel plate 14 is positioned in the front and rear directions and the left and right directions and moves to the right, the front and rear sides of the hot-rolled steel plate 14 will pass through the front and rear two transverse cutters 50, thereby completing the cutting of the front and rear sides of the hot-rolled steel plate 14. Since the hot-rolled steel plate 14 is positioned in the front and rear directions and the left and right directions, no deviation will occur when it is cut by the transverse cutter 50, thereby ensuring the cutting accuracy.

The transverse cutter 50 can be adjusted in the front-to-back direction to adjust the cutting width. The adjustment of the transverse cutter 50 can be achieved by driving a cylinder. This technology belongs to the prior art and will not be described in detail here.

The feeding module will drive the hot-rolled steel plate 14 to move to the right side of the machine base 10. The supporting platform 13 will bear the hot-rolled steel plate 14 so that the hot-rolled steel plate 14 is sent to the pushing module. Then the left and right positioning modules will release the positioning of the hot-rolled steel plate 14. After the pushing module re-clamps the hot-rolled steel plate 14, it will push the hot-rolled steel plate 14 forward, so that the hot-rolled steel plate 14 passes through the longitudinal cutting module and is cut on the left and right sides.

In order to ensure that the center point of the hot-rolled steel plate 14 is at the cutting center of the longitudinal cutting module when the hot-rolled steel plate 14 is cut on the left and right sides, so as to more accurately cut the two sides of the hot-rolled steel plate 14, a centering module is set, which will be explained in detail below.

As shown in FIG. 4 and FIG. 5 , the centering module includes a telescopic rod 64 , a sliding frame 63 , a fixing seat 62 , a positioning rod 60 and a positioning slot 65 .

Telescopic rods 64 are fixedly installed on the two opposite sides of the mobile frame 23. The telescopic rods 64 are composed of two outer rods and an inner rod that slide with each other. Two telescopic rods 64 are arranged at the front and back of each side. A sliding frame 63 is fixedly installed on the end of the telescopic rod 64 on each side away from the mobile frame 23. The sliding frame 63 has a T-shaped structure, and the sliding frames 63 on both sides are symmetrically arranged with each other.

A fixed seat 62 is arranged between the sliding frames 63 on both sides, and the two ends of the fixed seat 62 are respectively connected to the sliding frames 63 on both sides by springs. A connecting plate 61 is slidably matched with the center position of the fixed seat 62, and a positioning rod 60 is fixedly connected to the upper end of the connecting plate 61. The axis of the positioning rod 60 is arranged horizontally along the front-back direction. The positioning rod 60 is located on the upper surface of the machine base 10.

In the initial state, the clamping rods 42 on both sides are in contact with the sliding frame 63 on that side. When the clamping rods 42 on both sides clamp the hot-rolled steel plate 14, the clamping rods 42 on both sides will move inward at the same time, thereby pushing the sliding frames 63 on both sides to slide toward the middle. Since the sliding frames 63 on both sides are connected to the fixed seat 62 through spring sliding, no matter which side of the sliding frame 63 moves, the springs on both sides of the fixed seat 62 will be subjected to the same force. In other words, no matter how the sliding frames 63 on both sides move, the sliding distances of the sliding frames 63 on the fixed seat 62 are the same, so the positioning rod 60 is always located at the center of the sliding frames 63 on both sides.

Because the end surface of the hot-rolled steel plate 14 is uneven, the clamping rods 42 on each side move at different distances, so only the clamping rod 42 with the longest movement distance will push the sliding frame 63 to the limit position. The clamping rod 42 with the longest movement distance will be at the lowest point of the concave portion of the end of the hot-rolled steel plate 14. Therefore, the positioning rod 60 will always be at the middle position between the front and rear extension lines of the lowest point of the concave portions on both sides of the hot-rolled steel plate 14.

The lowest point of the depression at the end of the hot-rolled steel plate 14 is the best position for cutting off the left and right ends of the hot-rolled steel plate 14 , so the positioning rod 60 will always be in the middle of the best cutting positions on both sides of the hot-rolled steel plate 14 .

The upper surfaces of the front and rear side walls of the base 10 are respectively provided with positioning grooves 65, which are located in the middle of the push module and the longitudinal cutting module. The left and right sides of the positioning groove 65 transition with the upper surface of the base 10 through an inclined surface or an arc surface, so that the positioning rod 60 can be separated from the positioning groove 65.

When the feeding module drives the hot-rolled steel plate 14 to move to the right side of the machine base 10 , the positioning rod 60 will fall into the positioning groove 65 when passing through the positioning groove 65 , thereby completing the positioning of the middle position of the hot-rolled steel plate 14 after transverse cutting.

It is particularly emphasized that after the feeding module drives the hot-rolled steel plate 14 to move to the right side of the machine base 10, the new hot-rolled steel plate 14 to be processed is placed on the carrier plate 12 to complete the loading operation. This method is the loading method of the device. The loading operation can only be performed when the feeding module moves to the right side. When the feeding module returns, the lifting cylinder 11 will drive the carrier plate 12 to descend, so that the hot-rolled steel plate 14 drops to a certain height to ensure that the clamping rod 42 on the left passes through the hot-rolled steel plate 14. Since the lower end of the clamping rod 42 abuts against the upper surface of the carrier plate 12, the hot-rolled steel plate 14 is lowered to avoid interference with the movement of the clamping rod 42. Until the hot-rolled steel plate 14 is located on the inner side of the movable frame 23.

As shown in FIG. 1 and FIG. 7 , the push module includes a push cylinder 70 installed at the rear side of the machine base 10, and a push platform 71 is fixedly installed on the telescopic portion of the push cylinder 70. In this embodiment, the push platform 71 is an L-shaped structure, and its vertical surface is a push surface. Its horizontal surface is a clamping surface. A clamping cylinder 72 is installed at the bottom of the push platform 71, and the telescopic portion of the clamping cylinder 72 extends above the clamping surface of the push platform 71, and a clamping plate 73 is fixedly installed on the telescopic portion of the clamping cylinder 72.

The push table 71 is located between the support table 13 and the bearing plate 12, and when the hot-rolled steel plate 14 moves to the right, the clamping plate 73 is in an open state. When the hot-rolled steel plate 14 reaches the right side, it is just located between the push table 71 and the clamping plate 73, and then the push cylinder 70 pushes the push table 71 forward, so that the push surface of the push table 71 is close to the rear side of the hot-rolled steel plate 14. At this time, the front and rear sides of the hot-rolled steel plate 14 have been completely horizontal after cutting, and the push surface can be completely in contact with the rear side of the hot-rolled steel plate 14 to ensure the positioning effect of the hot-rolled steel plate 14. Then the clamping cylinder 72 drives the clamping plate 73 to descend and clamp the hot-rolled steel plate 14. The rear side of the hot-rolled steel plate 14 is in close contact with the push surface of the push table 71, and is pressed by the clamping plate 73 in the vertical direction to ensure the positioning and clamping effect of the hot-rolled steel plate 14, and avoid offset during longitudinal cutting. Then the left and right positioning modules release the positioning of the hot-rolled steel plate 14 .

A material penetration hole 74 is opened at the front side of the machine base 10 , and the pushing cylinder 70 pushes the hot-rolled steel plate 14 toward the front side, so that the hot-rolled steel plate 14 passes through the material penetration hole 74 and enters the longitudinal cutting module.

As shown in FIG1 , the longitudinal cutting module includes a cutting table 80 installed on the front side of the machine base 10, and the cutting table 80 corresponds to the position of the material penetration hole 74. Two longitudinal cutters 81 are arranged at intervals on the left and right sides of the cutting table 80 near the material penetration hole 74. When the hot-rolled steel plate 14 moves forward, the longitudinal cutters 81 on both sides complete the cutting of the left and right sides of the hot-rolled steel plate 14.

Similarly, the longitudinal cutters 81 on the left and right sides can also be adjusted left and right to adjust the cutting position as needed.

When the moving frame 23 returns to the left after cutting, the positioning rod 60 will be disengaged from the positioning groove 65 and the reset is completed because the left and right sides of the positioning groove 65 and the upper surface of the machine base 10 are transitioned through an inclined surface or an arc surface.

In other embodiments, infrared sensors or distance sensors can be installed at the ends of the sliding frames 63 on both sides, which can automatically detect the lowest point of the depressions at both ends of the hot-rolled steel plate 14. The lowest point of the depressions at the ends of the hot-rolled steel plate 14 is the best position for cutting the left and right ends of the hot-rolled steel plate 14, and then the position of the longitudinal cutter 81 is adjusted to avoid cutting too much waste, which can minimize the waste of materials.

Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims (8)

1. The hot rolled steel plate cutting device comprises a stand, a front positioning module, a rear positioning module, a transverse cutter and a longitudinal cutter, and is characterized in that a bearing plate is vertically slid on the inner side of the stand, a moving frame is horizontally slid on the stand left and right, and the stand is also provided with a left positioning module, a right positioning module, a centering module and a pushing module;

The left and right positioning modules comprise hydraulic oil tanks arranged on the movable frame, a plurality of hydraulic rods communicated with the hydraulic oil tanks are horizontally arranged on opposite surfaces of the left and right sides of the movable frame at intervals, clamping rods which are vertically arranged are fixedly arranged on telescopic parts of the hydraulic rods, and a pump body is arranged on the hydraulic oil tanks;

The centering module comprises sliding frames which are bilaterally symmetrical and horizontally slide on the moving frames, a fixed seat which is positioned between the two sliding frames and is simultaneously in elastic sliding connection with the two sliding frames, a positioning rod which is vertically slid on the fixed seat and the axis of which is horizontally arranged along the front-back direction, and two positioning grooves which are arranged on the machine base in the front-back direction, wherein the positioning grooves are positioned on the path of the left-right movement of the positioning rod;

The pushing module comprises a pushing table horizontally sliding on the right side of the machine base back and forth, and a clamping plate vertically sliding on the pushing table, a material penetrating hole is formed in the front side of the machine base and corresponds to the pushing table, and the longitudinal cutter is arranged on the machine base and close to the material penetrating hole;

the telescopic rods are fixedly installed on the left side surface and the right side surface of the movable frame, each telescopic rod consists of two outer rods and two inner rods which are in sliding fit with each other, and one end, away from the movable frame, of each telescopic rod is fixedly connected with the sliding frame.

2. The hot rolled steel plate cutting device according to claim 1, wherein two groups of lifting cylinders are arranged in front of and behind the inner side of the stand, the telescopic part of each group of lifting cylinders is fixedly provided with a horizontally arranged bearing plate, the two bearing plates are arranged at intervals in front of and behind, and a channel which penetrates up and down is arranged between the two bearing plates.

3. The hot rolled steel plate cutting device according to claim 2, wherein a first screw is rotatably installed on the inner side of the machine base, the axis of the first screw is horizontally arranged along the left-right direction, the position of the first screw corresponds to the channel between the two bearing plates up and down, a moving block is screwed on the first screw, the moving block is in sliding fit with the front bearing plate and the rear bearing plate, and the moving block is fixedly connected with the moving frame.

4. The hot rolled steel plate cutting device according to claim 1, wherein the second screw is rotatably mounted on both left and right sides of the movable frame, and an axis of the second screw is horizontally arranged in a front-rear direction, and two adjusting blocks horizontally slidably engaged with the movable frame are mounted on the second screw, and a foremost hydraulic rod and a rearmost hydraulic rod of each hydraulic rod are respectively fixed to the corresponding adjusting blocks.

5. The hot rolled steel sheet cutting apparatus as claimed in claim 1, wherein the left and right sides of the positioning groove are transited with the upper surface of the stand by means of inclined planes or cambered surfaces so that the positioning rod is separated from the positioning groove.

6. The hot rolled steel sheet cutting device according to any one of claims 1 to 5, wherein a pushing cylinder is mounted on the rear side of the stand, the pushing table is fixedly arranged on a telescopic part of the pushing cylinder, the pushing table is of an L-shaped structure, a clamping cylinder is mounted on the bottom of the pushing table, the telescopic part of the clamping cylinder extends to the upper part of the pushing table, and the clamping plate is fixedly arranged on the telescopic part of the clamping cylinder.

7. The hot rolled steel sheet cutting apparatus as claimed in claim 6, wherein the transverse cutters are provided in two groups and are respectively located at front and rear sides of the stand, and the transverse cutters are located on a path along which the workpiece moves to the right.

8. The hot rolled steel plate cutting device according to claim 7, wherein a cutting table is installed at the front side of the stand, the cutting table corresponds to the threading hole, the longitudinal cutters are installed at the cutting table, and two longitudinal cutters are arranged at left and right intervals.