Rolling equipment capable of recycling roll core of cold rolling reversible mill

Abstract

The invention discloses rolling equipment capable of recycling a roll core of a cold rolling reversible mill, and relates to the technical field of rolling technologies, the rolling equipment comprises a roll feeding trolley, an uncoiler is arranged above the roll feeding trolley, two roll unloading trolleys are arranged on one side of the roll feeding trolley, and a right roll taking machine and a left roll taking machine are arranged on the corresponding roll unloading trolleys; a reversible cold-rolling mill is arranged between the two coil stripping trolleys, a front device is arranged on one side of the reversible cold-rolling mill, a rear device is arranged on the other side of the reversible cold-rolling mill, and an uncoiling support is arranged on the uncoiling machine and corresponds to the uncoiling support. The invention has the following beneficial effects: no personnel is added in the unit during working, the coil core unloading frequency and packaging workload of workers can be reduced, the equipment action frequency is reduced, the service life is prolonged, the potential safety hazard of coil core binding is eliminated, and the transportation cost of a travelling crane and a forklift is reduced; original equipment of the unit is utilized, only welding accessory equipment is added, cost is very low, one roll core is saved for each roll, and benefits are considerable.

Description

Technical Field

[0001] This invention relates to the field of rolling technology, specifically to rolling equipment for reusing cores from cold-rolled reversible mills. Background Technology

[0002] Cold rolling is the process of cold rolling hot-rolled coils into cold-rolled coils of different thicknesses required by customers.

[0003] Reversible rolling involves repeatedly rolling the incoming steel coils back and forth.

[0004] The domestic cold rolling industry is developing rapidly. In order to solve the problem of low yield of reversible rolling mills (related to core production), many companies have started to install continuous rolling mills. The investment in cold continuous rolling mills is huge (cold continuous rolling mills do not produce core production), and not every company can afford to install them. For small companies or existing cold rolling companies that have been producing for many years, this invention is very meaningful for these companies.

[0005] Offline assembly involves leveling and cutting the core, then connecting it with the raw material roll. This requires multiple operators and is very costly. It also requires a large workforce, with each shift needing three rotating workers and three day shift workers. The core requires leveling equipment, and the raw material roll requires hoisting and rotating equipment, resulting in low work efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide rolling equipment for reusing cores from cold-rolled reversible mills, thereby addressing the shortcomings of existing technologies.

[0007] To achieve the above objectives, the present invention provides the following technical solution: It includes an upper winding trolley, an uncoiler mounted above the upper winding trolley, two unwinding trolleys on one side of the upper winding trolley, a right unwinder and a left unwinder mounted on their respective unwinding trolleys, a reversible cold rolling mill between the two unwinding trolleys, a front-end device on one side of the reversible cold rolling mill, a rear-end device on the other side of the reversible cold rolling mill, an unwinding bracket mounted on the uncoiler and corresponding to the unwinding bracket, a starting straightener between the right unwinder and the unwinding bracket, and a hydraulic shear and welding assembly between the reversible cold rolling mill and the unwinder.

[0008] As described above, the cold-rolled reversible rolling mill core reuse equipment includes a welding assembly comprising a welding platform, a welding gantry, and a laser welding head. The laser welding head is connected to the upper part of the welding gantry via a telescopic structure. The welding platform is fixedly installed in the middle of the welding gantry and is located below the uncoiled raw material.

[0009] Compared with the prior art, the beneficial effects of the present invention are: the unit does not increase personnel during operation, and can reduce the frequency of unloading cores and the workload of packaging. The reduced operating frequency of the equipment increases its service life and eliminates the safety hazards of binding cores. It utilizes the original equipment of the unit and only adds welding auxiliary equipment, which is very low cost. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0012] Figure 2 Illustration of raw material connection head Figure 1 ;

[0013] Figure 3 Illustration of raw material connection head Figure 2 ;

[0014] Figure 4 Illustration of raw material connection with tail Figure 1 ;

[0015] Figure 5 Illustration of raw material connection with tail Figure 2 .

[0016] Reference numerals: 1-Workbench, 11-Strip through groove, 12-Through groove, 2-Main rolling mill, 21-U-shaped frame, 22-Main roll, 23-Rotating rod, 3-Cutting assembly, 31-Cutting motor, 32-Cutting blade, 33-Vertical plate, 34-Electric push rod, 35-Protective cover, 4-Winder, 41-Motor, 42-Circular plate, 43-Arc plate, 44-Support plate, 45-Guide groove, 46-Guide rod, 47-Nut, 48-Guide sleeve, 49-Slider, 5-Uncoiler, 51-Fixing plate, 52-Uncoil motor, 53-Uncoil drum, 6-Connecting platform, 7-Left guide roller, 8-Right guide roller. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] like Figures 1 to 4 As shown in the figure, the rolling equipment for reusing cold-rolled reversible cores disclosed in this embodiment includes an upper coil trolley 1, an uncoiler 2 above the upper coil trolley 1, two uncoiling trolleys 5 on one side of the upper coil trolley 1, a right take-up machine 4 and a left take-up machine 11 both mounted on the corresponding uncoiling trolleys 5, a reversible cold rolling mill 7 between the two uncoiling trolleys 5, a front-end device 6 on one side of the reversible cold rolling mill 7, a rear-end device 8 on the other side of the reversible cold rolling mill 7, an uncoiling bracket 9 on the uncoiler 2 and corresponding to the uncoiling bracket 9, a starting straightener 3 between the right take-up machine 4 and the uncoiling bracket 9, and a hydraulic shear and welding assembly between the reversible cold rolling mill 7 and the take-up machine.

[0019] By adding shearing and welding platforms to the existing equipment, there are two welding methods: First, lap welding: the raw material strip from the uncoiler is overlapped and welded to the coil core, which can be done using resistance welding or laser welding. Second, butt weld: the raw material has already been sheared into straight ends on the uncoiler side; after the strip passes through, it is butt welded to the sheared coil core. This method must use laser welding.

[0020] The welding assembly includes a welding platform, a welding gantry, and a laser welding head. The laser welding head is connected to the upper part of the welding gantry via a telescopic structure. The welding platform is fixedly installed in the middle of the welding gantry and is located below the uncoiled raw material.

[0021] Cutting components: Includes hydraulic shears for cutting strip steel, producing straight cuts. The welding platform has up / down and left / right adjustment functions.

[0022] The winding machine is used to wind up the strip, establish the pre-tension, and assist the unwinding trolley in unwinding the strip.

[0023] The winding machine consists of main components such as a drum, body, expansion and contraction hydraulic cylinder, main drive device, push plate, and movable support.

[0024] The drum consists of three expansion and contraction sector plates, one expansion and contraction jaw sector plate, a four-sided pyramidal shaft, a hollow shaft, an expansion and contraction cylinder, and a rotary joint. The expansion and contraction cylinder pulls (pushes) the four-sided pyramidal shaft, which drives the sector plates to expand and contract the drum. The jaw sector plate has a jaw cylinder, which clamps the strip by supplying oil through the oil port of the hollow shaft. The jaw cylinder and the expansion and contraction cylinder are supplied with oil by the rotary joint.

[0025] The main reducer housing is a welded structure with two-stage reduction. The gears are made of alloy forged steel with hardened tooth surfaces (5-level precision), and the input shaft and intermediate shaft bearings are NSK.

[0026] The movable support consists of a swing arm, a fixed support, a tapered sleeve, and a hydraulic cylinder. The swing arm is a welded structure, and the tapered sleeve is made of steel section. During the rolling process, it swings to the end of the drum spindle to support the drum. The support center and the center line of the unit remain fixed.

[0027] The transmission device consists of an AC variable frequency motor, a coupling, and a brake.

[0028] The push plate consists of a welded push plate, a hydraulic cylinder, and a guide column.

[0029] Working principle:

[0030] The process of reversible rolling mill: The steel coil is placed on the uncoiler 53 of the uncoiler 5 and then threaded onto the coiler 4 at the rear of the mill. The coiler 4 clamps the strip steel with its jaws, and it is wound around once. The strip is rolled to form a sheet. When the strip reaches the tail, the tail is threaded onto the coiler jaws at the front of the mill, clamped, and wound around once. The rolling process is repeated until the finished product is produced.

[0031] From the center line of the roll to the coiler 4 behind the machine, plus the previous winding, when the finished product is unwound at the front of the machine, this part behind the machine is called the core. The core weighs about 160-250 kg. One core is produced for each roll. This core is unloaded from the coiler 4 behind the machine and sold as a semi-finished product. This invention is the reuse of this core, and the reversible rolling mill no longer has cores.

[0032] Process: Finished product is produced at the front of the machine; the strip steel sent by the uncoiler 5, after being sheared, stops at the joint. Then, the core left from the previous coil (for reuse) is jogged to the joint and joined with the strip head. After joining, the uncoiler 5 is jogged in the opposite direction to move the interface to the center line of the roll and start rolling. This is called strip head joining.

[0033] Finished product output after the machine: When rolling the first pass and then turning the tail, after stopping the machine, jog the tail section to the docking point, and connect the core head left from the previous pass with the tail of the raw material strip to start production, which is called strip tail connection.

[0034] It should be noted that the above embodiments are only specific and clear descriptions of the technical solutions and features of this application. Solutions or features that are prior art or common knowledge to those skilled in the art will not be described in detail in the above embodiments.

[0035] Furthermore, the technical solutions of this application are not limited to the above-described embodiments. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other implementation methods that can be understood by those skilled in the art. 。

Claims

1. A rolling plant for the reuse of the cores of cold reversible rolling mills, characterized in that it comprises: The system includes an upper coil trolley (1), an uncoiler (2) above the upper coil trolley (1), two unwinding trolleys (5) on one side of the upper coil trolley (1), a right unwinder (4) and a left unwinder (11) on the corresponding unwinding trolleys (5), a reversible cold rolling mill (7) between the two unwinding trolleys (5), a front-end device (6) on one side of the reversible cold rolling mill (7), a rear-end device (8) on the other side of the reversible cold rolling mill (7), an unwinding bracket (9) on the uncoiler (2) and corresponding to the unwinding bracket (9), a starting straightener (3) between the right unwinder (4) and the unwinding bracket (9), and a hydraulic shear and welding assembly between the reversible cold rolling mill (7) and the unwinder.

2. The rolling plant for the reuse of the cores of cold reversible rolling mills according to claim 1, characterized in that: The welding assembly includes a welding platform, a welding gantry, and a laser welding head. The laser welding head is connected to the upper part of the welding gantry via a telescopic structure. The welding platform is fixedly installed in the middle of the welding gantry and is located below the uncoiled raw material.

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