Conveying roller device and method for solving adhesion problem after casting blank cutting

Abstract

The invention belongs to the technical field of casting blank cutting, and particularly relates to a conveying roller device and method for solving adhesion of a casting blank after cutting. The lifting roller is arranged between the conveying roller and the flame cutting area, due to the fact that the lifting roller rotates by one circle, the highest point of the upper end of the lifting roller is higher than the upper end of the conveying roller, and the lowest point of the upper end of the lifting roller is lower than the upper end of the conveying roller. Therefore, one end of the cut casting blank can be lifted up through the lifting roller, displacement in the vertical direction of the casting blank to be cut is achieved, then the adhesion position is snapped through the lifting force of the lifting roller and the gravity of the casting blank, and the cutting efficiency and safety of the casting blank are effectively guaranteed. The device is simple in structure, can effectively solve the problem of casting blank adhesion, reduces the labor of workers, and avoids production accidents caused by untimely treatment.

Description

Technical Field

[0001] This invention belongs to the field of continuous casting billet cutting technology, specifically a conveying roller device and method for solving the problem of billet adhesion after cutting. Background Technology

[0002] Currently, in the continuous casting production of small square (rectangular) billets, the primary method for billet cutting is flame cutting. Flame cutting is performed according to the fixed length of the billet, with only a small number of cutting machines using gas purging to remove cutting slag. However, the purging effect varies depending on the billet size; moreover, most small square (rectangular) billet flame cutting machines lack slag removal devices. Therefore, in winter or when the ambient temperature is low, the cutting slag tends to cool rapidly and adhere to the cut of the billet, easily causing billet adhesion and requiring manual cutting.

[0003] Chinese patent document CN219402246U (202320072061.3) discloses a device for preventing sticking after billet cutting. The flame cutting machine described in this invention incorporates a gas slag blowing device for slag removal. However, this device has a gas storage tank, requiring regular gas replenishment, making equipment maintenance cumbersome.

[0004] Chinese patent document CN114289822A (202111562720.3) discloses a method for controlling the adhesion of cast billets after cutting. This invention compares the actual distance traveled by the cutting machine during production with the cutting distance corresponding to the cross-section of the cast billet to determine if the billet is completely cut, and promptly activates the roller conveyor to remove the billet, thus avoiding adhesion accidents. However, this technical solution does not consider how to solve the adhesion caused by cutting slag before the billet is completely cut, which has limitations. Summary of the Invention

[0005] This invention addresses the shortcomings of existing equipment, specifically the tendency for cast billets to stick together during cutting, by providing a device to resolve this issue. The device has a simple structure, effectively solves the problem of cast billet sticking, reduces worker workload, and prevents production accidents caused by delayed handling.

[0006] The technical problem to be solved by the present invention is achieved by the following technical solution: a conveying roller device for solving the problem of adhesion after billet cutting, comprising a conveying roller, a lifting roller, a conveying roller drive mechanism, a lifting roller drive mechanism, a flame cutter and a control module; The conveying roller is located at the end of the flame cutting zone, and the lifting roller is located between the conveying roller and the flame cutting zone. When the lifting roller rotates one revolution, the highest point of the upper end of the lifting roller is higher than the upper end of the conveying roller, and the lowest point of the upper end of the lifting roller is lower than the upper end of the conveying roller. The conveyor roller drive mechanism is used to control the rotation of the conveyor roller; The lifting roller drive mechanism is used to control the rotation of the lifting roller; The control module is connected to the conveyor roller drive mechanism, the lifting roller drive mechanism, and the flame cutter, respectively.

[0007] Preferably, the lifting roller of this invention has an elliptical cross-section. The difference in length between the major and minor axes of the elliptical structure is used to lift and avoid the casting billet. The lifting roller has an elliptical cross-section, and its major axis is slightly longer than the diameter of other circular conveyor rollers on the roller conveyor. During billet cutting, the billet tends to stick together, which can cause dislocations in the vertical direction, thereby breaking off the sticky cutting slag.

[0008] Preferably, the lifting roller of this invention has an eccentric wheel structure in its cross-section. The lifting and avoidance of the casting billet is achieved by utilizing the difference in distance from the periphery of the eccentric wheel structure to the center of rotation.

[0009] This invention also discloses a method for solving the problem of billet adhesion after cutting, using the above-mentioned conveying roller device for solving the problem of billet adhesion after cutting, including the following steps: During the billet cutting process, the upper surface of the lifting roller is lower than the upper surface of the conveying roller; Once the billet is cut, the flame cutting machine sends a cutting end signal. When the control module receives the cutting end signal, it controls the lifting roller drive mechanism to drive the lifting roller to rotate. The lifting roller lifts the billet, causing the billet after cutting to be displaced perpendicularly to the billet to be cut, thereby breaking the cutting slag adhering to the billet. The control module controls the conveyor roller drive mechanism to drive the conveyor roller to rotate, and transport the cut billet away.

[0010] Preferably, the conveying speed of the conveying rollers is greater than the conveying speed of the corresponding conveying roller track below the flame cutting zone. To avoid direct interference and collision between the cast billets, the conveying speed of the conveying rollers is greater than the conveying speed of the corresponding conveying roller track below the flame cutting zone, so as to facilitate the rapid removal of the cut cast billets.

[0011] Compared with the prior art, the beneficial effects of the present invention are: This invention incorporates a lifting roller between the conveying roller and the flame cutting zone. As the lifting roller rotates one revolution, its highest point is higher than the top of the conveying roller, and its lowest point is lower. Therefore, the lifting roller can elevate one end of the cut billet, achieving vertical displacement with the billet to be cut. The lifting force of the roller and the weight of the billet itself then break any adhesions, effectively ensuring both cutting efficiency and safety. This invention features a simple structure, effectively solving the problem of billet adhesion, reducing worker workload, and preventing production accidents caused by delayed handling.

[0012] This invention utilizes a control module to achieve coordinated control of the conveyor roller drive mechanism, the lifting roller drive mechanism, and the flame cutting machine, ensuring safety and continuity during the cutting process.

[0013] Furthermore, compared with the prior art, the present invention has a simple structure, logic, and operation, and is easy to maintain in the later stages, without the need to add an additional pressure tank for storing dangerous gases. Attached Figure Description

[0014] Figure 1 A schematic diagram of the conveyor roller device for solving the problem of billet adhesion after cutting; Figure 2 This is a schematic diagram of the elliptical roller in Example 1; Figure 3 This is a schematic cross-sectional view of the elliptical roller in Example 1; Figure 4 This is a block diagram illustrating the judgment of the anti-adhesion control method for the completed billet cutting according to the present invention, as described in Example 1. In the diagram, 1 is the conveying roller and 2 is the lifting roller. Detailed Implementation

[0015] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings: Example 1 like Figures 1-3 As shown, a conveying roller device for solving the problem of billet adhesion after cutting includes a conveying roller 1, a lifting roller 2, a conveying roller drive mechanism, a lifting roller drive mechanism, a flame cutter, and a control module.

[0016] The conveying roller 1 is located at the end of the flame cutting zone, and the lifting roller 2 is located between the conveying roller 1 and the flame cutting zone. A safe distance is provided between the lifting roller 2 and the corresponding conveying roller track of the flame cutting zone to avoid interference with the uncut billet during the lifting process.

[0017] When the lifting roller 2 rotates one revolution, the highest point of the upper end of the lifting roller 2 is higher than the upper end of the conveying roller 1, and the lowest point of the upper end of the lifting roller 2 is lower than the upper end of the conveying roller 1.

[0018] The conveyor roller drive mechanism is used to control the rotation of the conveyor roller 1.

[0019] The lifting roller drive mechanism is used to control the rotation of the lifting roller 2.

[0020] The control module is connected to the conveyor roller drive mechanism, the lifting roller drive mechanism, and the flame cutter, respectively.

[0021] like Figure 2 and Figure 3 As shown, the cross-section of the lifting roller is an elliptical structure.

[0022] The core invention of this embodiment is the design of a roller conveyor with an elliptical cross-section, i.e., an elliptical roller. Compared to other circular conveyor rollers on the conveyor, the major axis of its ellipse is longer than the diameter of the circular conveyor roller, and the minor axis of its ellipse is shorter than the diameter of the circular conveyor roller. Furthermore, a separate elliptical roller control and drive unit, i.e., a lifting roller drive mechanism, is provided for individual control of the elliptical roller.

[0023] In this embodiment, the elliptical roller can achieve the separation of the slab adhesion by rotating half a turn. This is achieved by using the different roller diameters to create a height difference during rotation, and using gravity to break and cut the adhesion.

[0024] like Figure 4 As shown, a method for solving the problem of billet adhesion after cutting, using the aforementioned conveying roller device for solving the problem of billet adhesion after cutting, includes the following steps: During the billet cutting process, the upper surface of the lifting roller 2 is lower than the upper surface of the conveying roller 1.

[0025] Once the billet has been cut, the flame cutting machine sends a cutting end signal.

[0026] When the control module receives the cutting end signal, it controls the lifting roller drive mechanism to drive the lifting roller 2 to rotate. The lifting roller 2 lifts the billet, causing the billet after cutting to be displaced perpendicularly to the billet to be cut, thereby breaking the cutting slag adhering to the billet.

[0027] The control module controls the conveyor roller drive mechanism to drive the conveyor roller 1 to rotate, transporting the cut billet away. This invention does not change the existing billet operation mode; the billet to be cut moves according to the original mode.

[0028] The conveying speed of conveyor roller 1 is greater than the conveying speed of the corresponding conveyor roller below the flame cutting zone.

[0029] In this embodiment, the elliptical roller is in its initial position when its major axis is horizontal, and in its working position when its major axis is vertical. During the billet conveying and cutting process on the roller conveyor, the elliptical roller is in its initial position and does not rotate. Because the minor axis of the elliptical roller is shorter than the diameter of the other circular rollers (conveyor roller 1), the elliptical roller does not contact the billet, thus preventing billet contact friction.

[0030] After the billet is cut, the flame cutter sends a cutting end signal. The elliptical roller control unit receives the billet cutting signal and controls the elliptical roller to rotate to the working position. Since the major axis of the elliptical roller is longer than the diameter of the circular roller (conveying roller 1), the elliptical roller lifts the billet, causing vertical dislocation of the billet and breaking off the cutting slag adhering to the billet.

[0031] Example 2 The difference from Embodiment 1 is that the cross-section of the lifting roller is an eccentric wheel structure (not shown in the figure), and the lifting roller as a whole is cylindrical (or can be other shapes), with the center of rotation offset from the axis. Unlike Embodiment 1, this embodiment requires one full rotation to complete the separation process of the adhered billet.

Claims

1. A conveying roller device for solving the problem of billet adhesion after cutting, characterized in that: Includes a conveyor roller (1), a lifting roller (2), a conveyor roller drive mechanism, a lifting roller drive mechanism, a flame cutter, and a control module; The conveying roller (1) is located at the end of the flame cutting zone, and the lifting roller (2) is located between the conveying roller (1) and the flame cutting zone; When the lifting roller (2) rotates one revolution, the highest point of the upper end of the lifting roller (2) is higher than the upper end of the conveying roller (1), and the lowest point of the upper end of the lifting roller (2) is lower than the upper end of the conveying roller (1). The conveyor roller drive mechanism is used to control the rotation of the conveyor roller (1); The lifting roller drive mechanism is used to control the rotation of the lifting roller (2); The control module is connected to the conveyor roller drive mechanism, the lifting roller drive mechanism, and the flame cutter, respectively.

2. The conveyor roller device for solving the problem of billet adhesion after cutting according to claim 1, characterized in that: The lifting roller has an elliptical cross-section.

3. The conveyor roller device for solving the problem of billet adhesion after cutting according to claim 1, characterized in that: The lifting roller has an eccentric wheel structure in its cross-section.

4. A method for solving the problem of billet adhesion after cutting, comprising the conveying roller device for solving the problem of billet adhesion after cutting as described in any one of claims 1 to 3, characterized in that, Includes the following steps: During the billet cutting process, the upper surface of the lifting roller (2) is lower than the upper surface of the conveying roller (1); Once the billet is cut, the flame cutting machine sends a cutting end signal. When the control module receives the cutting end signal, it controls the lifting roller drive mechanism to drive the lifting roller (2) to rotate. The lifting roller (2) lifts the billet, causing the billet after cutting to be displaced in the vertical direction with the billet to be cut, thereby breaking the cutting slag adhering to the billet. The control module controls the conveyor roller drive mechanism to drive the conveyor roller (1) to rotate, and transport the cut billet away.

5. The method for solving the adhesion problem after billet cutting according to claim 4, characterized in that: The conveying speed of the conveying roller (1) is greater than the conveying speed of the corresponding conveying roller track below the flame cutting zone.

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