Fixed-length cutting device for hot rolling production of medium plate

Abstract

The invention relates to the technical field of steel plate sampling detection, and discloses a fixed-length cutting device for hot rolling production of a medium-thickness plate, which comprises a shell, the interior of the shell is hollow, a guide assembly, a positioning roller and a transmission roller are respectively arranged at the front part, the middle part and the rear part of the interior of the shell, and the guide assembly, the positioning roller and the transmission roller are all located at the center line of the interior of the shell; the number of the positioning rollers is two, the number of the transmission rollers is two, a dividing assembly is arranged between the positioning rollers and the transmission rollers, the dividing assembly comprises a truss, a plurality of water jet cutter heads are arranged on the truss, and the water jet cutter heads are used for conducting cutting and sample separation on a plate, utilizing cutting liquid of a water jet cutter and guiding the cutting liquid into rotating guide rollers. The guide roller is cooled, so that when the guide roller guides a high-temperature plate, the cooling effect on the high-temperature plate is achieved, and the situation that due to the fact that the temperature of the plate is too high, water jet liquid is gasified and even subjected to steam explosion when the water jet works is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of steel plate sampling and detection, in particular to a fixed-length cutting device for medium and thick plate hot rolling production. Background Art

[0002] Steel coils are cut into specific lengths according to order requirements. Sampling and testing are carried out at any time during the hot rolling cutting process. During sampling, the steel plates formed after cutting are cut into samples of fixed lengths, and then the mechanical properties, thickness and surface defects of the samples are tested.

[0003] Chinese patent CN104048846B discloses a flame cutting sampling device for medium and thick plates and a sampling method thereof, comprising a pit provided on the bottom surface of a sampling station, wherein rollers for supporting and rotating steel coils are provided in the pit, and a tensioning steel wire rope is provided on the ground on one side of the pit, perpendicular to the axis of the rollers; a guardrail and a baffle are provided in the pit above the transmission motor of the rollers, and a flame gun, a pneumatic wrench, and a pneumatic baler are hung around the guardrail, and the baffle is coordinated with the pit. The advantages are that the equipment required for sampling is simplified, the entire sampling process is convenient and quick, and work efficiency is improved, while labor intensity is reduced and production costs are saved; after the entire tail plate is cut, the tail plate will slowly tilt to the ground due to the tension of the tensioning steel wire rope, eliminating safety hazards, and then the tail plate of the steel coil will automatically reset under the action of the rollers, and the entire steel coil will not loosen, which provides convenience for subsequent re-binding and packaging, ensuring smooth production.

[0004] With the development of hot rolling technology, steel coils are unwound after being heated and hot rolled through pressure rollers. When hot rolling is completed, the plate, which is still at a high temperature, is directly cut to complete the cutting, and then the formed plate is sampled and tested. Several existing technologies, including the above-mentioned patents, are affected by the cutting method when cutting and sampling the split plate, and the collected sample data is limited. At the same time, the cutting method itself has a great impact on the plate, which is not conducive to subsequent sample testing. For this reason, a fixed-length cutting device for hot-rolled medium and thick plates is proposed. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a fixed-length cutting device for hot-rolled medium and thick plates, which has advantages and solves the problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fixed-length cutting device for hot rolling production of medium and thick plates, comprising a shell, the interior of the shell is hollow, and a guide assembly, a positioning roller and a transmission roller are respectively provided at the front, middle and rear parts of the interior, all of which are located in the center line of the shell, the guide assembly comprises two guide rollers, and two positioning rollers and two transmission rollers are also provided, a splitting assembly is provided between the positioning roller and the transmission roller, the splitting assembly comprises a truss, a plurality of water knife heads are provided on the truss, the water knife heads are used to cut and sample the plates, the guide assembly and the positioning roller guide the plates to the splitting assembly for splitting, and the transmission roller discharges the split plates, the interior of the shell is provided with a bottom bin for recovering the residual liquid after the water knife heads work, the ends of the guide rollers are provided with bellows connected to the bottom bin to guide the residual liquid into the guide rollers to cool the plates just connected to the shell.

[0007] Preferably, an inner tube is provided inside the guide roller, and an outer ring channel is formed between the inner tube and the guide roller. The guide roller is a cylindrical structure, and the inner tube is inserted into the interior of the guide roller from the opening thereof, and both ends of the inner tube are through-hole-shaped, and the port of the inner tube inserted into the guide roller does not contact the bottom end of the guide roller.

[0008] Preferably, a plurality of heat conducting plates are provided in the outer ring channel, and the plurality of heat conducting plates fix the inner tube inside the guide roller. The heat conducting plates are in contact with the inner wall of the guide assembly, and heat exchange is generated at the same time.

[0009] Preferably, two bellows are provided at one end of the guide roller, one of which is connected to the heat conducting plate, and the other is connected to the inner tube, and the other ends of the two bellows are connected to the bottom bin, and a pump is provided in the bottom bin and is connected to the inner tube through one of the bellows.

[0010] Preferably, the guide assembly also includes a positioning block, which is provided at both ends of the two guide rollers. The positioning block is slidably installed in the inner wall of the shell, and a hydraulic pushing device is provided in the inner wall of the shell to drive the positioning block and control the distance between the upper and lower positioning blocks.

[0011] Preferably, the guide assembly also includes two limiting belts, which are respectively connected to the two ends of the upper and lower guide rollers. The two limiting belts are rotatably connected to the guide rollers. A push wheel is provided on the side of the guide roller, and the push wheel intervenes in the limiting belt from the middle of the two guide rollers.

[0012] Preferably, the truss is placed horizontally in the upper area inside the shell, and a group of electric push rods are provided at both ends of the truss to control the up and down movement of the truss inside the shell. A cross frame is provided inside the truss, and several water jet heads are evenly distributed at the nodes of the cross frame.

[0013] Preferably, a screw rod is provided above the cross frame, and a thread is provided at each end of the screw rod, and the threads on both sides are provided in opposite directions. A motor for driving the screw rod to rotate is provided in the truss, and a ring is provided at each end of the cross frame to connect with the screw rod.

[0014] Preferably, the splitting assembly further comprises a transverse plate, on which a plurality of conduits are provided, the conduits being linked to a plurality of water jet heads in a one-to-one correspondence, and the other end of the conduits being connected to an external pump to input high-pressure spray liquid to the water jet heads.

[0015] Compared with the prior art, the present invention provides a fixed-length cutting device for hot-rolled medium and thick plates, which has the following beneficial effects:

[0016] 1. The splitting assembly includes several evenly arranged water jet heads. Through the vertical movement of the plate and the horizontal movement of each water jet head, multiple test samples can be removed from a plate at the same time;

[0017] 2. Use water jet cutting to cut the hot-rolled plates. Since there is no high-temperature heat output, the HAZ and phase change are avoided. At the same time, the mechanical stress is much lower than sawing and shearing, and there is no tissue coarsening on the cut surface, which has less impact on subsequent material performance testing.

[0018] 3. Utilize the cutting fluid of the water jet and introduce it into the rotating guide roller to cool the guide roller. When the guide roller guides the high-temperature plate, it can cool the high-temperature plate, thus avoiding the situation where the temperature of the plate is too high, causing the water jet liquid to vaporize or even steam explode when the water jet is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall appearance of a fixed-length cutting device for hot-rolled medium and thick plates according to the present invention;

[0020] Figure 2 This is a side structural diagram of a fixed-length cutting device for hot-rolled medium and thick plates according to the present invention;

[0021] Figure 3 This is a schematic structural diagram of a guide assembly of a fixed-length cutting device for hot-rolled medium and thick plates of the present invention;

[0022] Figure 4 This is a schematic diagram of the guide roller structure of a fixed-length cutting device for medium and thick plate hot rolling production according to the present invention;

[0023] Figure 5 This is a schematic diagram of the internal structure of a guide roller of a fixed-length cutting device for hot-rolled medium and thick plates of the present invention;

[0024] Figure 6This is a schematic diagram of the installation position structure of the splitting components of a fixed-length cutting device for hot-rolled medium and thick plates of the present invention;

[0025] Figure 7 This is a schematic structural diagram of a cutting assembly of a fixed-length cutting device for hot-rolled medium and thick plates according to the present invention;

[0026] Figure 8 This is a schematic diagram of the moving structure of the water jet head of a fixed-length cutting device for hot rolling production of medium and thick plates of the present invention.

[0027] In the picture:

[0028] 1. Shell;

[0029] 2. Guide assembly; 21. Guide roller; 22. Limiting belt; 23. Positioning block; 24. Bellows; 25. Push wheel;

[0030] 211, outer ring road; 212, heat conducting plate; 213, inner tube;

[0031] 3. Positioning roller; 4. Partition frame; 5. Bottom bin; 6. Filter plate; 7. Transmission roller;

[0032] 8. Split assembly; 81. Truss; 82. Cross plate; 83. Conduit; 811. Cross frame; 812. Water jet head; 813. Ring; 814. Screw. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] As introduced in the background technology, in order to solve the deficiencies in the prior art and to solve the above technical problems, the present application proposes a fixed-length cutting device for hot-rolled medium and thick plates.

[0035] Example 1

[0036] like Figure 1-8As shown, a fixed-length cutting device for hot rolling production of medium and thick plates includes a shell 1. The shell 1 is hollow inside, and a guide component 2, a positioning roller 3 and a transmission roller 7 are respectively provided at the front, middle and rear of the shell 1, all of which are located in the center line of the shell 1, wherein the guide component 2 includes two guide rollers 21, and the positioning rollers 3 and the transmission rollers 7 are also provided with two each. A splitting component 8 is provided between the positioning roller 3 and the transmission roller 7, and the splitting component 8 includes a truss 81, on which a plurality of water knife heads 812 are provided. The water knife heads 812 are used to cut and sample the plates, wherein the guide component 2 and the positioning roller 3 guide the plates to the splitting component 8 for splitting, and the transmission roller 7 discharges the split plates. A bottom bin 5 is provided inside the shell 1 for recovering the residual liquid after the water knife heads 812 work, and a bellows 24 is provided at the end of the guide roller 21 to communicate with the bottom bin 5 to guide the residual liquid into the guide roller 21 to cool the plates just connected to the shell 1.

[0037] The cutting and sampling device is in the path of the pressure roller, and its two sides are connected by a manipulator. Since not every cut plate will be sampled, when the plate that has not been sampled passes through the sampling device, the cutting component 8 does not work, and the distance between the two rollers of the guide component 2, the positioning roller 3 and the transmission roller 7 is expanded to facilitate the plate to pass directly from the shell 1 and enter the subsequent processing steps. For the plate that needs to be sampled, when it enters the shell 1 and is between the guided component 2 and the positioning roller 3, the two rollers corresponding to the guide component 2 and the positioning roller 3 clamp the plate, and the manipulator controls the shell 1 to rise and disengage from the path of the pressure roller to avoid affecting the continued movement of other plates on the path. At the same time, the device further cuts and samples the transferred plate to detect its mechanical properties, thickness, surface defects and other data. Before the detection is carried out, The plate first contacts the two guide rollers 21 in the shell 1. Since there is liquid flowing in the guide rollers 21, the guide rollers 21 can maintain a low temperature and contact the plate that has just finished hot rolling, so as to cool the plate that has completed hot rolling. The cooling effect is affected by the temperature of the flowing liquid in the guide rollers 21 and the rotation speed of the guide rollers 21. As for the degree of cooling of the plate, it is not necessary to lower it to room temperature. It only needs to be lowered to below the boiling point of the water jet liquid to avoid the situation where the plate temperature is too high during cutting, causing the water jet liquid to vaporize or steam explosion. Therefore, the installation position of this device on the pressure roller path should be as far away from the hot rolling station as possible, so that the plate dissipates some heat during the movement of the path, reducing the working intensity of the guide rollers 21, so as to achieve a better cooling effect on the plate, ensuring cutting safety while having higher cutting efficiency.

[0038] Example 2

[0039] Furthermore, an inner tube 213 is provided inside the guide roller 21, and an outer ring channel 211 is formed between the inner tube 213 and the guide roller 21. The guide roller 21 is a cylindrical structure, and the inner tube 213 is inserted into the guide roller 21 from the opening thereof. Both ends of the inner tube 213 are through holes. The port of the inner tube 213 inserted into the guide roller 21 does not contact the bottom end of the guide roller 21, so that the inner tube 213 and the outer ring channel 211 are in a connected state. A plurality of heat conducting sheets 212 are provided in the outer ring channel 211, and the heat conducting sheets 212 connect the inner tube 213 to the outer ring channel 211. While being fixed inside the guide roller 21, the heat received by the guide roller 21 when in contact with the plate is transferred to the fluid flowing in the heat conducting sheet 212, thereby achieving a cooling effect on the guide roller 21, so that the guide roller 21 can have a cooling effect on the plate. Two bellows 24 are connected to the end of a single guide roller 21, one of which is connected to the heat conducting sheet 212, and the other is connected to the inner tube 213. The other ends of the two bellows 24 are both connected to the bottom bin 5. A pump is provided in the bottom bin 5 and is connected to the inner tube 213 through a bellows 24.

[0040] Furthermore, the guide assembly 2 also includes a limiting belt 22 and a positioning block 23. The positioning blocks 23 are provided at both ends of the two guide rollers 21. The positioning blocks 23 are slidably installed in the inner wall of the shell 1. A hydraulic pushing device is provided in the inner wall of the shell 1 to control the spacing between the upper and lower positioning blocks 23 to achieve the effect of controlling the spacing between the upper and lower guide rollers 21 and then clamping the plate. Two limiting belts 22 are provided, which are respectively connected to the two ends of the upper and lower guide rollers 21. The two limiting belts 22 are rotatably connected to the guide rollers 21. A push wheel 25 is provided on the side of the guide roller 21. The push wheel 25 intervenes in the limiting belt 22 from the middle of the two guide rollers 21. By pushing the limiting belt 22, the effect of assisting in controlling the spacing between the upper and lower guide rollers 21 is achieved. The rotation of the upper and lower guide rollers 21 is connected to the drive motor at the end of the guide roller 21 that is not connected to the bellows 24 through gear transmission.

[0041] As for the positioning roller 3 and the transmission roller 7 that also play the role of controlling the plate, similarly to the guide roller 21, a structure similar to the positioning block 23 is used to control the upper and lower spacings.

[0042] Example 3

[0043] Furthermore, the truss 81 is placed horizontally in the upper area inside the shell 1, and a group of electric push rods are provided at both ends of the truss 81 to control the up and down movement of the truss 81 inside the shell 1. A cross frame 811 is provided inside the truss 81, and several water knife heads 812 are evenly distributed at the nodes of the cross frame 811. A screw 814 is provided above the cross frame 811, and a section of thread is opened at both ends of the screw 814, and the thread is opened in opposite directions. A motor for driving the screw 814 to rotate is provided in the truss 81, and a ring 813 is provided at both ends of the cross frame 811 to connect with the screw 814. The rotation of the screw 814 can drive the ring 813 to open and contract.

[0044] The dividing assembly 8 also includes a transverse plate 82 , on which a plurality of conduits 83 are provided. The conduits 83 are connected to a plurality of water cutter heads 812 in a one-to-one correspondence. The other end of the conduit 83 is connected to an external pump to input high-pressure spray liquid to the water cutter heads 812 .

[0045] When the guide assembly 2 and the positioning roller 3 push the plate to be split and sampled to the cutting area, the electric push rods on both sides of the truss 81 work to push the truss 81 to move toward the plate. At the same time, the internal motor of the truss 81 works to control the separation or contraction of the cross frame 811 to achieve the effect of controlling the spacing between several water jet heads 812, and at the same time, according to the size of the plate, thereby achieving the effect of controlling the cutting size of the plate.

[0046] When cutting, the water cutter head 812 is started in advance, the guide roller 21 and the positioning roller 3 rotate, pushing the plate to move toward the dividing component 8, and contacting with the water flow sprayed by the water cutter head 812, and the cutting work begins. The plate movement speed is controlled according to the thickness of the plate to ensure a good cutting effect. When it moves to a predetermined length, the guide roller 21 and the positioning roller 3 stop rotating. At the same time, the internal motor of the truss 81 works and drives 815 to rotate, so as to drive the water cutter head 812 to move horizontally, and continue to cut the plate that was originally cut vertically horizontally to cut small pieces of uniform size, that is, to complete the cutting sampling of the plate. The transmission roller 7 at the end of the shell 1 rotates to transfer the cut sample out of the shell 1 for subsequent specific testing.

[0047] Furthermore, a partition frame 4 is provided inside the shell 1, and a bottom bin 5 is formed below the partition frame 4. The partition frame 4 separates the bottom bin 5 from the internal area of ​​the shell 1, and the partition frame 4 is provided with two vertical plates in the area below the dividing component 8 to separate the cutting area from other areas to guide the cutting fluid sprayed by the water jet head 812 to flow to the partition frame 4. A filter plate 6 is provided below the vertical plate to filter the cutting fluid flowing out from the bottom of the cutting area. Since the cutting fluid will be filled with some abrasive particles when working to improve the cutting effect, the abrasive particles and debris generated during cutting are filtered out with the cutting fluid by providing the filter plate 6, so that the cutting fluid flows into the bottom bin 5 to obtain pure cutting fluid to act on the guide roller 21.

[0048] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fixed-length cutting device for hot-rolled medium and heavy plates, comprising a housing (1), characterized in that: The interior of the shell (1) is hollow, and a guide assembly (2), a positioning roller (3) and a transmission roller (7) are respectively provided at the front, middle and rear of the shell (1), and all three are located at the center line of the shell (1). The guide assembly (2) includes two guide rollers (21), and the positioning rollers (3) and the transmission rollers (7) are also provided with two each. A splitting assembly (8) is provided between the positioning roller (3) and the transmission roller (7), and the splitting assembly (8) includes a truss (81), and a plurality of water knife heads (812) are provided on the truss (81). The water knife head (812) is used to cut and sample the plate, the guide assembly (2) and the positioning roller (3) guide the plate to the cutting assembly (8) for cutting, and the transmission roller (7) discharges the cut plate. The shell (1) is provided with a bottom bin (5) inside for recovering residual liquid after the water knife head (812) works, and the end of the guide roller (21) is provided with a bellows (24) connected to the bottom bin (5) to guide the residual liquid into the guide roller (21) to cool the plate just connected to the shell (1).

2. The cut-to-length device for hot-rolled medium and heavy plates according to claim 1, characterized in that: An inner tube (213) is provided inside the guide roller (21), and an outer ring channel (211) is formed between the inner tube (213) and the guide roller (21). The guide roller (21) is a cylindrical structure, and the inner tube (213) is inserted into the guide roller (21) from the opening thereof, and both ends of the inner tube (213) are through-hole-shaped, and the port of the inner tube (213) inserted into the guide roller (21) does not contact the bottom end of the guide roller (21).

3. The cut-to-length device for hot-rolled medium and heavy plates according to claim 2, characterized in that: A plurality of heat-conducting sheets (212) are provided in the outer ring channel (211), and the plurality of heat-conducting sheets (212) fix the inner tube (213) inside the guide roller (21). The heat-conducting sheets (212) are in contact with the inner wall of the guide assembly (2), and heat exchange is generated at the same time.

4. The device for cutting to length for hot-rolled medium and heavy plates according to claim 2, characterized in that: Two bellows (24) are provided at one end of the guide roller (21), one of the bellows (24) is connected to the heat conducting plate (212), and the other bellows (24) is connected to the inner tube (213), and the other ends of the two bellows (24) are both connected to the bottom bin (5), and a pump is provided in the bottom bin (5) and is connected to the inner tube (213) through one of the bellows (24).

5. The device for cutting to length for hot-rolled medium and heavy plates according to claim 2, characterized in that: The guide assembly (2) further comprises a positioning block (23), the positioning block (23) being provided at both ends of the two guide rollers (21), the positioning block (23) being slidably mounted on the inner wall of the shell (1), and a hydraulic pushing device being provided in the inner wall of the shell (1) to drive the positioning block (23) and control the spacing between the upper and lower positioning blocks (23).

6. The cut-to-length device for hot-rolled medium and heavy plates according to claim 5, characterized in that: The guide assembly (2) further comprises two limiting belts (22) respectively connected to the two ends of the upper and lower guide rollers (21); the two limiting belts (22) are rotatably connected to the guide rollers (21); a push wheel (25) is provided on the side of the guide roller (21); the push wheel (25) intervenes in the limiting belt (22) from the middle of the two guide rollers (21).

7. The cut-to-length device for hot-rolled medium and heavy plates according to claim 1, characterized in that: The truss (81) is placed horizontally in the upper area inside the shell (1), and a group of electric push rods are respectively provided at both ends of the truss (81) to control the up and down movement of the truss (81) inside the shell (1). A cross frame (811) is provided inside the truss (81), and a plurality of water jet heads (812) are evenly distributed at the nodes of the cross frame (811).

8. The cut-to-length device for hot-rolled medium and heavy plates according to claim 7, characterized in that: A screw rod (814) is provided above the cross frame (811), and a section of thread is respectively provided at both ends of the screw rod (814), and the threads on both sides are provided in opposite directions. A motor for driving the screw rod (814) to rotate is provided in the truss (81), and a collar (813) is respectively provided at both ends of the cross frame (811) to connect with the screw rod (814).

9. The device for cutting to length for hot-rolled medium and heavy plates according to claim 7, characterized in that: The dividing assembly (8) further comprises a transverse plate (82), on which a plurality of conduits (83) are provided. The conduits (83) are linked to a plurality of water cutter heads (812) in a one-to-one correspondence, and the other end of the conduit (83) is connected to an external pump to input high-pressure spray liquid to the water cutter heads (812).

Images