Device for changing cold shearing roller way from fixed roller way to tipping roller way in bar factory

Abstract

The invention discloses a device for changing a cold shearing roller way from a fixed roller way to a tipping roller way in a bar factory, which relates to the technical field of cold shearing roller ways and is technically characterized by comprising a base, a roller way frame and a hydraulic cylinder, a plurality of rollers are arranged on the roller way frame, one side of the roller way frame is rotationally connected with the base through a first trunnion, the other side of the roller way frame is rotationally connected with a movable part of the hydraulic cylinder, a steel plate is arranged below the hydraulic cylinder and the base, a ground foundation gap below the steel plate is filled with castable after the steel plate is leveled, and a fixed part of the hydraulic cylinder is rotationally connected with the steel plate; when the roller bed frame needs to be tipped over, the hydraulic cylinder shrinks, so that the roller bed frame rotates downwards around the first lug shaft from the horizontal state and is tipped over by a certain angle; the automatic discharging device has the automatic discharging function, the production efficiency can be improved, and good flexibility is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cold shear roller way, in particular to a device for changing the cold shear roller way of a bar mill from a fixed roller way to a tilting roller way. BACKGROUND

[0002] In the complete process flow of steel bar production, the cold shear process occupies a pivotal position, as it is like a precise "cutting line" that undertakes the key task of shearing the long bar after the rolling process according to the pre-set accurate length. The precision and stability of this process are directly related to the quality of the subsequent products and the smoothness of the entire production process.

[0003] In the implementation process of the traditional cold shear process, the cold shear roller way relied on is mostly a fixed roller way. The design structure of this fixed roller way is relatively simple, and its core function focuses on the conveying link of the bar. In the production site, the fixed roller way is like an orderly arranged "conveyor belt", which accurately conveys the rolled bar from the previous process to the cold shear position at a stable speed and direction. During the conveying process, the fixed roller way provides a stable support and movement platform for the bar due to its solid structure and stable operation characteristics, ensuring that the bar can reach the cold shear equipment below with the correct posture and position, laying the foundation for the subsequent precise shearing operation. It is like the "transportation hub" in the entire cold shear process, silently undertaking the important mission of material flow, and guaranteeing the continuity and rhythm of the production process.

[0004] However, this fixed roller way has many obvious defects. On the one hand, after the bar is cut, the fixed roller way cannot automatically separate and unload the unqualified products or bars that need special treatment from the qualified products. Usually, manual assistance or additional equipment is needed to complete these tasks, which not only greatly increases the labor intensity and labor cost, but also leads to reduced production efficiency. Moreover, manual operation is prone to errors, which affects the accuracy and stability of production. On the other hand, the fixed roller way has poor flexibility when dealing with some special conditions, making it difficult to meet the requirements of modern efficient and precise production. SUMMARY

[0005] In order to solve the above technical problems, the purpose of the present application is to provide a device for changing the cold shear roller way of a bar mill from a fixed roller way to a tilting roller way, which has an automatic unloading function, can improve production efficiency and has good flexibility.

[0006] To achieve the above purpose, the present application provides the following technical solutions:

[0007] The application discloses a kind of bar factory cold shear roller way by fixed roller is changed into tilting roller device, including base, roller way frame and hydraulic cylinder;Multiple rollers are provided on the roller way frame, one side of the roller way frame is rotatably connected with the base by first trunnion, the other side of the roller way frame is rotatably connected with the movable part of hydraulic cylinder, the hydraulic cylinder and the base below are equipped with steel plate, the ground foundation gap below after the steel plate is leveled is filled with castable, the fixed part of the hydraulic cylinder is rotatably connected with the steel plate;When the roller way frame needs to be tilted, the hydraulic cylinder is contracted, so that the roller way frame is rotated downward by the first trunnion from horizontal state and is tilted by a certain angle.

[0008] Preferably, it further comprises a trunnion connection mechanism, both sides of the base are provided with trunnion seats, and the first trunnion is arranged at the bottom of the roller way frame and is inserted into the trunnion seat to form a trunnion connection.

[0009] Preferably, it further comprises a programmable controller, and an electromagnetic reversing valve is connected to the liquid inlet of the hydraulic cylinder, and the programmable controller controls the extension and contraction of the hydraulic cylinder by controlling the electromagnetic reversing valve.

[0010] Preferably, a sensor group is arranged on the conveying path of the roller way frame, and the sensor group comprises a position sensor and a proximity sensor.

[0011] Preferably, a reinforcing rib plate is welded between the edge of the steel plate and the ground foundation.

[0012] Preferably, the tilting angle of the roller way frame is 10 to 20 degrees, and the stroke of the hydraulic cylinder is 300 to 400 mm.

[0013] The application has the following beneficial effects:

[0014] I. Automatic unloading is realized, and labor intensity and cost are reduced: in the traditional fixed roller way, after the bar is cut, the unqualified products or special bars cannot be automatically separated from the qualified products and unloaded, and manual assistance or additional equipment is needed, which increases labor intensity and labor cost and also affects production efficiency and accuracy. When the roller way frame needs to be tilted, the hydraulic cylinder is contracted, the roller way frame is rotated downward by the first trunnion and is tilted by a certain angle, automatic unloading is realized, manual intervention is not needed, labor intensity and labor cost are greatly reduced, and the accuracy and stability of production are improved.

[0015] II. Production efficiency is improved: since the traditional fixed roller way is inefficient in processing unqualified products or special bars, additional operations and time are needed, and the overall production process is blocked. The automatic unloading function of the tilting roller device of the application reduces manual operation steps and waiting time, makes the production process smoother, significantly improves production efficiency, and meets the requirements of modern high-efficiency production.

[0016] Third, enhance the flexibility of the device: the traditional fixed roller table is poor in flexibility when dealing with special conditions, which is difficult to meet the needs of modern precision production. The tilting roller device of the present application can control the tilting of the roller frame through the hydraulic cylinder, and can flexibly adjust the state of the roller frame according to different production needs and conditions, better adapt to various production situations, and improve the flexibility and versatility of the device.

[0017] Fourth, optimize the stability of the device structure: the hydraulic cylinder and the bottom are provided with a steel plate, and the gap between the steel plate edge and the ground foundation is welded with a reinforcing rib plate. These designs enhance the stability of the device as a whole, reduce the shaking and vibration during operation, and provide a more stable platform for the conveying and shearing of the bar, which is conducive to improving the product quality and the safety of production.

[0018] Fifth, precise control of tilting: the device is provided with a programmable controller, and the inlet of the hydraulic cylinder is connected with an electromagnetic reversing valve. The programmable controller controls the extension and retraction of the hydraulic cylinder by controlling the electromagnetic reversing valve, which can precisely control the tilting action and angle of the roller frame, and ensure the accuracy and stability of the unloading process.

[0019] Sixth, a sensor group is arranged on the conveying path of the roller frame, including a position sensor and a proximity sensor. These sensors can monitor the position and state of the bar in real time, provide accurate information for the programmable controller, so that the programmable controller can more accurately control the extension and retraction of the hydraulic cylinder, and thus realize accurate control of the tilting angle and timing of the roller frame, improving the precision of production.

[0020] Seventh, reasonable design of tilting parameters: the tilting angle of the roller frame is 10 to 20 degrees, and the stroke of the hydraulic cylinder is 300 to 400 mm. These parameters are reasonably designed, which can meet the needs of automatic unloading, and ensure the stability and safety of the device operation, avoiding equipment damage or production accidents caused by excessive tilting angle or improper hydraulic cylinder stroke. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0022] Fig. 1 The structure schematic diagram (horizontal state) of the first embodiment of the present application.

[0023] Fig. 2 The structure schematic diagram (tilting state) of the first embodiment of the present application.

[0024] Fig. 3 This is a schematic diagram of the structure of the second embodiment of the present invention.

[0025] In the diagram: 1. Base; 2. Roller conveyor; 201. Roller; 3. Hydraulic cylinder; 401. First trunnion; 402. Trunnion seat; 5. Steel plate; 501. Reinforcing rib plate; 601. Programmable controller; 602. Electromagnetic directional valve; 603. Position sensor; 604. Proximity sensor. Detailed Implementation

[0026] 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.

[0027] First embodiment

[0028] like Figs. 1-2 As shown, a device for converting a fixed roller conveyor to a tilting roller conveyor in a bar mill includes a base 1, a roller conveyor frame 2, and a hydraulic cylinder 3. Multiple rollers 201 are mounted on the roller conveyor frame 2. One side of the roller conveyor frame 2 is rotatably connected to the base 1 via a first trunnion 401, and the other side of the roller conveyor frame 2 is rotatably connected to the movable part of the hydraulic cylinder 3. A steel plate 5 is located below the hydraulic cylinder 3 and the base 1. After the steel plate 5 is leveled, the gaps in the ground foundation below it are filled with refractory material. The fixed part of the hydraulic cylinder 3 is rotatably connected to the steel plate 5. When the roller conveyor frame 2 needs to tilt, the hydraulic cylinder 3 retracts, causing the roller conveyor frame 2 to rotate downwards around the first trunnion 401 from a horizontal position and tilt at a certain angle.

[0029] like Figs. 1-2As shown, the device is mainly composed of a base 1, a roller frame 2 and a hydraulic cylinder 3. A plurality of rollers 201 are arranged on the roller frame 2 for carrying and conveying the bars, which is the basic component to realize the bar conveying function. The base 1 provides stable support for the entire device, ensuring a solid foothold during operation. The hydraulic cylinder 3 is the key power element to realize the tilting action of the roller frame 2. The roller frame 2 is rotatably connected to the base 1 through a first trunnion 401, which allows the roller frame 2 to rotate around the first trunnion 401, providing a structural possibility for subsequent tilting action. The hydraulic cylinder 3 and the base 1 are provided with a steel plate 5 below, which is filled with grouting material after leveling. The steel plate 5 plays a role in evenly distributing the device pressure and enhancing the overall stability. The leveling treatment ensures the levelness of the device installation, and the grouting material filling the gap further enhances the load-bearing capacity of the ground foundation, preventing problems during operation due to uneven ground settlement. The fixed part of the hydraulic cylinder 3 is rotatably connected to the steel plate 5, and the other side of the roller frame 2 is rotatably connected to the movable part of the hydraulic cylinder 3. This connection allows the hydraulic cylinder 3 to smoothly transmit power to the roller frame 2 when it is extended or retracted, while allowing the hydraulic cylinder 3 and the roller frame 2 to rotate freely within a certain angle range to adapt to the tilting action of the roller frame 2. When the roller frame 2 needs to be tilted, the hydraulic cylinder 3 is retracted. Since the movable part of the hydraulic cylinder 3 is rotatably connected to the roller frame 2, and the fixed part is rotatably connected to the steel plate 5, a pulling force is generated during the retraction of the hydraulic cylinder 3, which acts on the roller frame 2, causing the roller frame 2 to rotate downward around the first trunnion 401, thereby realizing the transition from the horizontal state to the tilted state. By controlling the retraction degree of the hydraulic cylinder 3, the tilting angle of the roller frame 2 can be accurately controlled to meet different production needs, such as automatic unloading of defective or special bars.

[0030] As shown in Figs. 1-2 , it also includes a trunnion connection mechanism, the two side edges of the base 1 are respectively provided with trunnion seats 402, and the first trunnion 401 is arranged at the bottom of the roller frame 2. The first trunnion 401 is inserted into the trunnion seat 402 to form a trunnion connection. The trunnion connection provides the roller frame 2 with the freedom to rotate around the trunnion. During operation of the device, when the roller frame 2 needs to perform tilting or other rotating actions, due to the cooperation of the trunnion and the trunnion seat 402, the roller frame 2 can stably and flexibly rotate within a certain angle range around the first trunnion 401, without being excessively constrained in other directions, ensuring the smoothness and accuracy of the rotating action of the roller frame 2, and laying a structural foundation for subsequent realization of automatic unloading and other functions.

[0031] As shown in Figs. 1-2As shown, the system also includes a programmable controller 601. An electromagnetic directional valve 602 is connected to the inlet of the hydraulic cylinder 3. The programmable controller 601 controls the extension and retraction of the hydraulic cylinder 3 by controlling the electromagnetic directional valve 602. The electromagnetic directional valve 602 is a valve that uses electromagnetic force to control the flow direction of hydraulic oil. When the electromagnet of the electromagnetic directional valve 602 is energized, it generates electromagnetic force, attracting the valve core to move, thereby changing the hydraulic oil passage and causing the hydraulic oil to flow in a set direction. When the electromagnet is de-energized, the valve core returns to its initial position under the action of spring force, and the flow direction of the hydraulic oil also changes accordingly. The programmable controller 601 is a programmable memory used to store programs internally and execute user-oriented instructions such as logical operations, sequential control, timing, counting, and arithmetic operations. In this technical solution, the programmable controller 601 sends electrical signals to the electromagnet of the electromagnetic directional valve 602 according to a pre-written program.

[0032] When hydraulic cylinder 3 needs to extend, programmable controller 601 sends a corresponding electrical signal, energizing one electromagnet of solenoid directional valve 602. Hydraulic oil flows in the direction that extends hydraulic cylinder 3, pushing its movable part outward. When hydraulic cylinder 3 needs to retract, programmable controller 601 sends different electrical signals, energizing or changing the energizing state of another electromagnet in solenoid directional valve 602. This changes the flow direction of hydraulic oil, causing the movable part of hydraulic cylinder 3 to retract inward. In this way, programmable controller 601 can precisely control the movement of solenoid directional valve 602, thereby precisely controlling the extension and retraction of hydraulic cylinder 3. Ultimately, this achieves precise control of the tilting angle and timing of the roller conveyor 2, meeting the automation operation requirements of different production scenarios.

[0033] like Figs. 1-2 As shown, the steel plate 5, measuring 500mm × 600mm, is positioned below the hydraulic cylinder 3 and the base 1. Firstly, it evenly distributes the pressure applied to the ground foundation by the entire device. During operation, the extension and retraction of the hydraulic cylinder 3 and the tilting of the roller conveyor 2 generate significant forces. If these forces were directly applied to the ground foundation, they could lead to excessive localized pressure and damage. The presence of the steel plate 5 disperses these forces over a larger area, reducing localized pressure and protecting the ground foundation. Secondly, the steel plate 5 provides a stable mounting surface for the hydraulic cylinder 3 and the base 1, ensuring the levelness and stability of the device during operation, thus improving the overall working accuracy and reliability of the tilting roller conveyor system.

[0034] A reinforcing plate 501 is welded between the edge of the steel plate 5 and the ground foundation. The reinforcing plate 501 plays a role in enhancing the structural strength and stability. During the operation of the device, especially when the roller stand 2 is tilted, a large vibration and stress will be generated. The reinforcing plate 501 can increase the connection stiffness between the steel plate 5 and the ground foundation, preventing the steel plate 5 from deforming or separating from the ground foundation due to stress. It more firmly connects the steel plate 5 and the ground foundation together to form an integral structure, effectively resisting various stresses generated during the operation of the device, further improving the stability and safety of the device.

[0035] As shown in Figs. 1-2 , the tilting angle of the roller stand 2 is set to 10 to 20 degrees, with 15 degrees being the best. This angle range is determined after considering various factors. When the tilting angle is too small, it may not be able to effectively achieve the automatic unloading function, for example, for some special-shaped or high-friction rod materials, a smaller tilting angle may not be able to make the rod material slide smoothly. When the tilting angle is too large, although it can ensure unloading, it may require higher structural strength and stability of the device, increasing the manufacturing cost and operation risk of the equipment, and may also pose a safety hazard to the surrounding environment and operators. The best tilting angle of 15 degrees takes into account the structural stability, safety and economic efficiency of the device under the premise of ensuring effective unloading. At this angle, when the roller stand 2 is tilted, the rod material can slide under the action of its own gravity at a suitable speed and trajectory, achieving the purpose of automatic unloading.

[0036] The stroke of the hydraulic cylinder 3 is set to 300 to 400 mm, with 350 mm being the best. The stroke of the hydraulic cylinder 3 is closely related to the tilting angle of the roller stand 2. When the hydraulic cylinder 3 extends and retracts, it pulls or pushes the roller stand 2 to rotate around the ear shaft to achieve tilting. The stroke of the hydraulic cylinder 3 determines the amplitude of the rotation of the roller stand 2, which in turn affects the tilting angle. If the stroke of the hydraulic cylinder 3 is too small, it may not be able to make the roller stand 2 reach the required tilting angle, and the automatic unloading function may not be achieved. Conversely, if the stroke is too large, it will not only increase the manufacturing cost and space occupation of the hydraulic cylinder 3, but also may cause the roller stand 2 to tilt excessively, adversely affecting the structure and operation safety of the device. The best stroke of 350 mm is determined by considering the performance of the hydraulic cylinder 3, the spatial layout of the device, and the running stability of the device, etc. under the requirement that the roller stand 2 reaches the best tilting angle of 15 degrees. At this stroke, the hydraulic cylinder 3 can work stably and reliably, accurately control the tilting action of the roller stand 2, and achieve the function of automatic unloading.

[0037] Second embodiment

[0038] As shown in Fig. 3As shown, a sensor group is arranged on the conveying path of the roller bed 2, which includes a position sensor 603 and a proximity sensor 604. The position sensor 603 can monitor the specific position information of the bar on the roller bed 2 in real time. During the conveying of the bar along the roller bed 2, the position sensor 603 continuously senses the position of the bar and converts the position signal into an electrical signal to be transmitted to the programmable controller 601. The programmable controller 601 analyzes and judges the received position signal according to the preset program and parameters. For example, when the position sensor 603 detects that the bar reaches a specific position (such as a position close to the cold shears or a position where it is necessary to judge whether it is a substandard product, etc.), the programmable controller 601 can make corresponding control decisions according to this signal to provide accurate position basis for subsequent processing of the bar (such as shearing or tilting unloading operations, etc.).

[0039] The proximity sensor 604 is mainly used to detect whether the bar approaches a certain specific area or object. When the bar moves on the roller bed 2 and gradually approaches the detection range set by the proximity sensor 604, the proximity sensor 604 senses the approach of the bar and quickly converts the approach signal into an electrical signal to be transmitted to the programmable controller 601. After receiving the proximity signal, the programmable controller 601 judges whether the approach of the bar meets the specific production requirements in combination with the preset logic and instructions. For example, when the proximity sensor 604 detects that the bar approaches the cold shears, the programmable controller 601 can control the cold shears to make shearing preparations according to this signal; or when it is necessary to judge whether the bar reaches the tilting unloading area, the signal of the proximity sensor 604 can help the programmable controller 601 accurately grasp the timing to control the hydraulic cylinder 3 to extend and retract to make the roller bed 2 tilt, thereby realizing automatic unloading operation.

[0040] The position sensor 603 and the proximity sensor 604 complement each other. The position sensor 603 provides accurate position information of the bar, so that the programmable controller 601 can fully understand the dynamic position of the bar on the entire conveying path; the proximity sensor 604 focuses on quickly sensing the approach state of the bar to a specific area or object to provide a timely trigger signal for the programmable controller 601. The programmable controller 601 comprehensively analyzes the signals transmitted by the two sensors, can more accurately control the extension and retraction of the hydraulic cylinder 3, and then accurately control the tilting angle and timing of the roller bed 2, thereby ensuring the efficient and accurate performance of the production links such as bar conveying, shearing and unloading, and improving the automation degree and production quality of the entire production process.

[0041] The above is only a specific embodiment of the present application, but the technical features of the present application are not limited thereto. Any simple change, equivalent replacement or modification made on the basis of the present application to solve basically the same technical problem and achieve basically the same technical effect is also covered by the protection scope of the present application.

Claims

1. A device for converting a fixed bar mill shear table into a tilting bar mill shear table, characterized in that: It includes base (1), roller frame (2) and hydraulic cylinder (3); The roller frame (2) is provided with a plurality of rollers (201), one side of the roller frame (2) is rotatably connected with the base (1) through the first trunnion (401), the other side of the roller frame (2) is rotatably connected with the movable part of the hydraulic cylinder (3), the hydraulic cylinder (3) and the base (1) are provided with a steel plate (5) below, the ground foundation gap below the steel plate (5) is filled with castable after leveling, the fixed part of the hydraulic cylinder (3) is rotatably connected with the steel plate (5); When the roller frame (2) needs to be tilted, the hydraulic cylinder (3) is contracted, so that the roller frame (2) is rotated downward around the first trunnion (401) to a certain angle from the horizontal state.

2. A device for converting a fixed roller table into a tilting roller table for a cold shear roller table in a bar mill, according to claim 1, characterized in that: It also includes a trunnion connection mechanism, both sides of the base (1) are provided with trunnion seats (402), the first trunnion (401) is arranged at the bottom of the roller frame (2), the first trunnion (401) is inserted into the trunnion seat (402), forming a trunnion connection.

3. A device for converting a fixed roller table into a tilting roller table for a cold shear of a bar mill according to claim 1, characterized in that: It also includes a programmable controller (601), the liquid inlet of the hydraulic cylinder (3) is connected with an electromagnetic reversing valve (602), the programmable controller (601) controls the extension and contraction of the hydraulic cylinder (3) by controlling the electromagnetic reversing valve (602).

4. A device for converting a stationary table of a bar mill cold shear into a tilting table according to claim 3, characterized in that: The conveying path of the roller frame (2) is provided with a sensor group, the sensor group includes a position sensor (603) and a proximity sensor (604).

5. A device for converting a fixed roll table into a tilting roll table for a cold shear of a bar mill according to claim 1, characterized in that: The edge of the steel plate (5) and the ground foundation are welded with a reinforcing rib plate (501).

6. A device for converting a fixed table of a bar mill cold shear into a tilting table, according to claim 1, characterized in that: The tilting angle of the roller frame (2) is 10 to 20 degrees, and the stroke of the hydraulic cylinder (3) is 300 to 400 mm.

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