Vertical auxiliary winding system for hot-rolled strip steel

Abstract

A vertical auxiliary winding system for hot-rolled strip steel belongs to the field of winding equipment for strip steel production and comprises a guide portion arranged between a winding table and a strip steel conveyor, the guide portion comprises a guide groove formed between two plate-shaped pieces arranged oppositely, and a clamping power roller of a roller pair is arranged at the end, close to the strip steel conveyor, of the guide groove. A water cooling pipe for spraying water to the surface of the strip steel to cool the strip steel and an air spraying pipe for spraying cooling water to the surface of the strip steel and further cooling the strip steel are respectively arranged on two sides of the guide groove along the moving direction of the strip steel in the guide groove; and a strip steel clamping mechanism for clamping the strip steel and guiding the strip steel to the clamping power roller is arranged at the tail end of the strip steel conveyor. According to the vertical auxiliary winding system, a strip steel head is found from disordered strip steel through the unique strip steel clamping mechanism, the speed of the strip steel head is reduced through the guide part, the strip steel head is fully cooled, and then the strip steel head is manually clamped into the clamping groove, so that the operation risk is greatly reduced.

Description

Technical Field

[0001] This utility model relates to coiling equipment for strip steel production in the field of steel products, specifically a vertical auxiliary coiling system for hot-rolled strip steel. Background Technology

[0002] Steel strip is a type of steel product in strip shape, with a width of up to 1300mm and a length that varies slightly depending on the size of each coil. Steel strip is characterized by high strength, good toughness, high dimensional accuracy, and strong machinability, and is widely used in construction, automobile manufacturing, machinery manufacturing, home appliance manufacturing, electronics and information technology, energy and chemical industry, and daily necessities.

[0003] Steel strip is generally produced by hot rolling or cold rolling processes. Hot-rolled steel strip is produced by heating steel billets to a certain temperature and then rolling them into strips of the required thickness and width using a hot rolling mill; cold-rolled steel strip is produced by further cold rolling of hot-rolled steel strip to obtain higher dimensional accuracy, surface quality and better mechanical properties.

[0004] In the existing technology, since cold-rolled strip steel does not involve heating, it is generally coiled horizontally after cold rolling. That is, the strip steel is laid flat on the conveyor rollers and moved, and is coiled into a steel coil by the coiler.

[0005] In the production of hot-rolled strip steel, the steel billet needs to be heated to a certain temperature before being rolled using a hot rolling mill. Throughout the rolling process, the strip steel maintains a relatively high temperature. After rolling, cooling methods are needed to lower the strip steel temperature to a certain level before it can be coiled. To improve cooling efficiency, the hot-rolled strip steel is typically flipped after exiting the hot rolling mill so that its surface is perpendicular to the conveyor rolls. At this time, water-cooling, air-cooling, and other cooling equipment on both sides simultaneously cool both surfaces of the strip steel, enabling the strip steel to be cooled as quickly as possible within a limited production space.

[0006] Since the strip is perpendicular to the conveyor roller at this time, the equipment that winds it into a strip coil is called a vertical coiler. The core of the vertical coiler is a rotating drum with its central axis perpendicular to the ground. At this time, the end of the strip needs to be inserted into the slot on the drum, and then the coiler is started to rotate the drum to complete the winding of the strip.

[0007] Since the strip is vertical at this point, that is, perpendicular to the conveyor roller, the contact friction between the two is very small. Simply relying on the friction between the conveyor roller and the strip is not enough to move the strip forward to the drum. Moreover, the positions of the ends of different strips on the conveyor roller are also different. Furthermore, the entire working area is in a high temperature and humidity environment, and some precision electronic components are not suitable for this environment. For cost considerations, the ends of the strip are usually manually pulled into the slots of the drum. However, because the temperature of the strip is still high at this point, and the initial velocity of the strip after leaving the hot rolling mill is also very high, the operation risk of workers manually pulling the ends of the strip into the slots of the drum is high, and work-related accidents are very likely to occur. Utility Model Content

[0008] To address the high operational risks and potential workplace injuries associated with manually pulling and clamping the strip end into the winding drum when using vertical coiling for hot-rolled strip, this invention provides a vertical auxiliary coiling system for hot-rolled strip. This system utilizes a unique strip clamping mechanism to locate the strip end from disordered strip, and simultaneously cools it by guiding it down. The strip end is then manually clamped into the slot, significantly reducing operational risks. Furthermore, the equipment used in this invention is all conventional equipment from existing technologies, resulting in lower procurement and maintenance costs.

[0009] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a vertical auxiliary winding system for hot-rolled strip steel. The auxiliary winding system includes a guide part disposed between the winding table and the strip steel conveyor. The guide part includes a guide groove formed between two plate-shaped pieces disposed opposite each other. The end of the guide groove near the strip steel conveyor has a clamping power roller with a pair of rollers. Along the movement direction of the strip steel in the guide groove, water-cooling pipes that spray water onto the surface of the strip steel to cool it down and air-jet pipes that spray cooling water onto the surface of the strip steel to further cool it down are respectively disposed on both sides of the guide groove. The end of the strip steel conveyor is provided with a strip steel clamping mechanism that clamps the strip steel and guides it to the clamping power roller.

[0010] As an optimized solution for the above-mentioned vertical auxiliary winding system for hot-rolled strip steel, the surfaces of the water-cooling pipe and the jet pipe are distributed with nozzles facing the surface of the strip steel, and there is a gap between the water-cooling pipe and the jet pipe.

[0011] As another optimization scheme for the above-mentioned hot-rolled strip vertical auxiliary winding system, the nozzles on the jet pipe are tilted towards the direction of the strip conveyor.

[0012] As another optimized solution for the above-mentioned hot-rolled strip vertical auxiliary winding system, the water-cooling pipe is connected to the water pump through the water inlet pipe, and the jet pipe is connected to the air compressor through the air inlet pipe.

[0013] As another optimized solution for the above-mentioned hot-rolled strip vertical auxiliary winding system, the bottom of the guide groove has a cooling water pool.

[0014] As another optimized solution for the above-mentioned vertical auxiliary winding system for hot-rolled strip steel, the winding table is located in front of the strip steel conveyor, and a lifting drum that can descend and extend from the surface of the winding table is provided at the center of the winding table. At least one slot for locking the end of the strip steel is provided on the lifting drum along its height direction.

[0015] As another optimized solution of the above-mentioned hot-rolled strip vertical auxiliary winding system, the strip clamping mechanism includes lifting and moving components on both sides of the end of the strip conveyor. The lifting and moving components include a horizontal guide rail and a longitudinal slider that slides along the horizontal guide rail. The longitudinal slider is vertically provided with a lifting guide rail, and the lifting guide rail is provided with a lifting slider. A crossbeam is provided between the two lifting sliders. The crossbeam has a transverse screw and two clamping sliders that are driven by the transverse screw to separate and close. Each clamping slider is provided with a rotating shaft driven by a motor, and the bottom of the rotating shaft has a clamping roller for clamping the strip.

[0016] As another optimized solution for the above-mentioned vertical auxiliary winding system for hot-rolled strip steel, the transverse lead screws are two horizontally arranged, and the clamping slider is provided with threaded holes that cooperate with these two transverse lead screws.

[0017] As another optimized solution for the above-mentioned vertical auxiliary winding system for hot-rolled strip steel, limit blocks are provided at both ends of the horizontal guide rail.

[0018] As another optimized solution for the above-mentioned vertical auxiliary winding system for hot-rolled strip steel, the clamping power roller is provided with a gathering plate on both sides, and the two gathering plates are arranged in a V-shape.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1) This utility model uses a vertical auxiliary winding system and a unique strip clamping mechanism to find the strip head from disordered strips. The guide part reduces its speed and cools it thoroughly. Then, the strip head is manually clamped into the slot, which greatly reduces the operational risk. Moreover, the equipment used in this utility model are all conventional equipment of the prior art, and the purchase cost and subsequent maintenance cost are also low.

[0021] 2) This utility model creatively uses two clamping rollers that can separate and close to clamp any part of the strip steel. Then, the forward and reverse rotation of the clamping rollers is used to find the head of the strip steel and send the head of the strip steel into the guide section. This realizes the automatic head finding and alignment operation in disordered strip steel. At the same time, the strip steel is decelerated and cooled in the guide section, which greatly improves the safety of workers. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the cooling guide section;

[0024] Figure 3 A schematic diagram of the lifting and moving assembly, crossbeam, and clamping slider;

[0025] Reference numerals: 1. Winding table; 2. Lifting drum; 201. Slot; 3. Strip conveyor; 4. Lifting and moving assembly; 401. Horizontal guide rail; 402. Longitudinal slider; 403. Lifting guide rail; 404. Lifting slider; 405. Limit block; 5. Crossbeam; 501. Transverse lead screw; 502. Lead screw motor; 6. Clamping slider; 601. Rotating shaft; 602. Clamping roller; 7. Guide cooling section; 701. Guide groove; 702. Clamping power roller; 703. Gathering plate; 704. Water cooling pipe; 705. Water inlet pipe; 706. Jet pipe; 707. Air inlet pipe; 708. Cooling water pool. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts of this utility model not described in the following embodiments, such as the selection and installation control of the motor for controlling the reciprocating movement of the longitudinal slider along the horizontal guide rail, the selection and installation control of the motor for controlling the lifting slider to rise and fall on the lifting guide rail, the cooperation between the transverse screw and the two clamping sliders, and the selection and installation control of the screw motor for controlling the rotation of the transverse screw, the selection and control of the strip conveyor model, the structure and control method of the winding table and the lifting drum, etc., are all considered to be prior art known or should be known by those skilled in the art.

[0027] Example 1

[0028] A vertical auxiliary winding system for hot-rolled strip steel, such as Figure 1 and Figure 2As shown, the auxiliary winding system includes a guide section 7 disposed between the winding table 1 and the strip conveyor 3. The length of the guide section 7 is designed according to the actual situation. The guide section 7 includes a guide groove 701 formed between two oppositely arranged plate-shaped pieces. The plate-shaped pieces can be straight plates or curved plates, so that the guide groove 701 forms a variable diameter groove with a wider end and a narrower middle. The depth of the guide groove 701, i.e., the height of the plate-shaped pieces, is generally 20-80% of the strip width. The width of the guide groove 701 is selected according to the actual situation, generally 3-10cm. The end of the guide groove 701 near the strip conveyor 3 has a clamping power roller 702. The clamping power roller 702 is driven to rotate by an existing power source, and during the rotation, it uses friction to move the strip forward. The movement speed of the strip head is controlled by controlling the rotation speed of the clamping power roller 702, and the movement of the strip along the guide groove 701 is controlled. The direction of movement is from the strip conveyor 3 to the coiling table 1. Water-cooling pipes 704 and jet pipes 706 are respectively installed on both sides of the guide trough 701 to spray water onto the strip surface to cool it down. The water-cooling pipes 704 can be installed on both sides inside the guide trough 701, in which case the water spraying direction is multi-directional, that is, simultaneously spraying water diagonally upwards, directly in front, and diagonally downwards, and the spacing of the guide troughs 701 is relatively wide. Alternatively, the water-cooling pipes 704 can be installed on both sides of the top of the guide trough 701, in which case the water spraying direction is diagonally downwards. Similarly, the jet pipes 706 are installed in the same way as the water-cooling pipes 704. Both the jet pipes 706 and the water-cooling pipes 704 are pipes closed at both ends, and their shape can be round, square, or a flat, plate-like hollow structure. The end of the strip conveyor 3 is equipped with a strip clamping mechanism that clamps the strip and guides it to the clamping power roller 702.

[0029] In this embodiment, the surfaces of the water-cooling pipe 704 and the jet pipe 706 are distributed with nozzles facing the surface of the strip steel. The size, shape, and distribution of the nozzles are adjusted according to the installation position, and there is a gap between the water-cooling pipe 704 and the jet pipe 706. Generally, the length of the water-cooling pipe 704 is 30-50% of the length of the guide groove 701, and the length of the jet pipe 706 is 20-30% of the length of the guide groove 701. The jet pipe 706 and the water-cooling pipe 704 are respectively set from both ends of the guide groove 701, so that the two are not connected and a gap is formed in the middle.

[0030] In this embodiment, the nozzles on the jet pipe 706 are tilted toward the direction of the strip conveyor 3, that is, toward the direction of the water cooling pipe 704, to spray compressed air, thereby blowing the surface cooling water back and improving the cooling efficiency.

[0031] In this embodiment, the water-cooling pipe 704 is connected to the water pump through the water inlet pipe 705, thereby pumping cooling water into the water-cooling pipe 704 and spraying it out. The jet pipe 706 is connected to the air compressor through the air inlet pipe 707. The air compressor draws in air, compresses it, and blows it onto the surface of the strip steel, which not only blows away the cooling water on the surface of the strip steel, but also promotes the cooling of the strip steel.

[0032] In this embodiment, the bottom of the guide groove 701 has a cooling water pool 708, and the surface of the cooling water pool 708 is distributed with through holes. The guide groove 701 is opened above the cooling water pool 708. The cooling water sprayed from the water-cooling pipe 704 flows from the surface of the strip steel into the cooling water pool 708. The cooling water pool 708 is connected to other cooling water pools in the outside world through ditches, pipes, water pumps and other equipment to fully cool the water. Then, the thoroughly cooled water is introduced into the water-cooling pipe 704 by a high-pressure water pump to complete the circulation.

[0033] In this embodiment, the clamping power roller 702 is provided with a gathering plate 703 on both sides. The gathering plate 703 is a flat steel plate and is placed vertically with its surface perpendicular to the ground. The two gathering plates 703 are arranged in a V-shape, forming a gathering area between them. The clamping power roller 702 is located at the V-shaped end of the gathering area. The opening width of the gathering area generally corresponds to 30-50% of the length of the middle position of the strip conveyor 3.

[0034] In this embodiment, the coiling table 1 is located in front of the strip conveyor 3, which is a conventional chain conveyor. The hot-rolled strip is placed vertically on the strip conveyor 3. "Vertical" means that its surface is in a vertical position. A lifting drum 3, capable of descending and extending from the surface of the coiling table 1, is located at the center of the coiling table 1. When the lifting drum 3 descends to its limit position, the entire lifting drum 3 is below the position of the coiling table 1, thus not affecting the movement of the coiled strip. When the lifting drum 3 rises to its limit position, the entire lifting drum 3 is above the surface of the coiling table 1. It can be locked and fixed with the winding table 1, and the two rotate synchronously, so that the strip steel can be wound around its side surface. The lifting drum 3 is provided with at least one slot 301 along its height direction to hold the end of the strip steel. The slot 301 is long and vertically arranged on the side of the lifting drum 3. Its length is greater than the width of the strip steel, so that the end of the strip steel can be easily inserted into the slot 301. The width of the slot 301 is greater than the width of the free end of the guide plate 8, so that when the free end of the guide plate 8 is locked on one side wall of the slot 301, the remaining part of the slot 301 can still easily hold the strip steel in it.

[0035] Example 2

[0036] This embodiment is a limitation on the structure of the strip clamping mechanism based on Embodiment 1. The strip clamping mechanism of this utility model can adopt any existing design, as long as it can achieve the effect of this utility model. It can also adopt the following structure:

[0037] like Figure 3 As shown, the strip clamping mechanism includes lifting and moving components 4 located on both sides of the end of the strip conveyor 3. Each lifting and moving component 4 includes a horizontal guide rail 401 extending along the transmission direction of the strip conveyor 3 and beyond its end to the gathering area, and a longitudinal slider 402 sliding along the horizontal guide rail 401. In practice, the longitudinal slider 402 is powered by a motor, for example, to control its back-and-forth movement. A lifting guide rail 403 is vertically mounted on the longitudinal slider 402. In practice, the lifting guide rail 403 is typically a lead screw, and the drive motor for the lead screw is generally located in the longitudinal section. A lifting slider 404 is mounted on the lifting guide rail 403 and mounted on the slider 402. The lifting slider 404 and the lifting guide rail 403 form the existing screw-slider mechanism. A crossbeam 5 is provided between the two lifting sliders 404. The crossbeam 5 is located above the strip conveyor 3 and perpendicular to its transmission direction. Both ends are fixed to the two lifting sliders 404, so that the lifting sliders 404 drive the crossbeam 5 to rise and fall as a whole. The longitudinal slider 402 drives the crossbeam 5 to move along the horizontal guide rail 401 as a whole. The crossbeam 5 has a transverse screw 501 and a transverse screw 501 belt. The two clamping sliders 6 are moved to achieve separation and retraction. There are generally two transverse lead screws 501, driven by a lead screw motor 502. The transverse lead screws 501 are divided into left and right parts with opposite thread directions. This ensures that when the transverse lead screw 501 rotates in one direction, the distance between the two clamping sliders 6 gradually decreases (retraction), and when it rotates in the other direction, the distance between the two clamping sliders 6 gradually increases (retraction). Each clamping slider 6 has a rotating shaft 601 below it, driven by a motor. The clamping rollers 602, which are placed on the clamping sliders 6 and have clamping rollers 602 at the bottom of the rotating shaft 601, are metal rollers that can clamp and convey strip steel in the prior art. They are small in size. When the two clamping sliders 6 are closed, the two clamping rollers 602 below them can clamp the strip steel. When the rotating shaft 601 rotates in one direction, such as clockwise, the two clamping rollers 602 roll against each other and drive the strip steel forward. When the rotating shaft 601 rotates in another direction, such as counterclockwise, the two clamping rollers 602 roll against each other and drive the strip steel backward.

[0038] In this embodiment, there are two horizontal lead screws 501 arranged horizontally, and the clamping slider 6 is provided with threaded holes that cooperate with these two horizontal lead screws 501.

[0039] In this embodiment, limit blocks 405 are provided at both ends of the horizontal guide rail 401. The purpose of the limit blocks 405 is to prevent the longitudinal slider 402 from falling off when it slides on the horizontal guide rail 401.

[0040] In this embodiment, the steps for winding the strip are as follows:

[0041] 1) Start the lifting and moving assembly 4 to move the crossbeam 5 to the position above the strip. Then, the lifting slider 404 drives the crossbeam 5 to descend until the clamping roller 602 below the clamping slider 6 is on the side of the strip. Then start the transverse screw 501 to make the two clamping sliders 6 gradually move towards the middle of the crossbeam 5 until the two clamping rollers 602 clamp the two sides of the strip.

[0042] 2) Start the motor to make the two rotating shafts 601 drive the two clamping rollers 602 to rotate. Due to the existence of friction, the strip moves relative to the clamping rollers 602 until the strip moves from the head position to between the two clamping rollers 602.

[0043] 3) Start the lifting and moving assembly 4 to move the crossbeam 5 to the clamping power roller 702. Start the motor again to make the clamping roller 602 rotate, so as to drive the strip steel to move forward and enter the clamping power roller 702. At this time, start the transverse lead screw 501 to move the two clamping sliders 6 in opposite directions to both sides of the crossbeam 5. Then, the lifting slider 404 drives the crossbeam 5 to rise. At the same time as the crossbeam 5 rises, the lifting and moving assembly 4 moves along the horizontal guide rail 401 to the initial position.

[0044] 4) The clamping power roller 702 clamps and drives the strip steel to move forward along the guide groove 701. During the forward movement in the guide groove 701, the strip steel is cooled by the cooling water sprayed from the water cooling pipe 704 and dried by the compressed air sprayed from the jet pipe 706. After passing through the guide groove 701, the speed and temperature of the strip steel have been reduced. At this time, the worker uses the existing traction tool to clamp the strip steel head and insert it into the slot 301, and then starts the coiling table 1 to coil it.

Claims

1. A vertical auxiliary coiling system for hot-rolled strip, comprising a guide (7) arranged between a coiling station (1) and a strip conveyor (3), characterized in that: The guide section (7) includes a guide groove (701) formed between two plate-shaped pieces arranged opposite to each other. The guide groove (701) has a clamping power roller (702) with opposite rollers at one end near the strip conveyor (3). Along the movement direction of the strip in the guide groove (701), a water-cooling pipe (704) for spraying water onto the surface of the strip to cool it down and an air-jet pipe (706) for spraying cooling water onto the surface of the strip to further cool it down are respectively provided on both sides of the guide groove (701). The end of the strip conveyor (3) is provided with a strip clamping mechanism that clamps the strip and guides it to the clamping power roller (702).

2. A vertical auxiliary coiling system for hot rolled strip steel as claimed in claim 1, characterized in that: The surfaces of the water-cooling pipe (704) and the jet pipe (706) are distributed with nozzles facing the surface of the strip steel, and there is a gap between the water-cooling pipe (704) and the jet pipe (706).

3. A vertical auxiliary coiling system for hot rolled strip steel as claimed in claim 2, characterized in that: The nozzle on the jet pipe (706) is tilted toward the direction of the strip conveyor (3).

4. A vertical auxiliary coiling system for hot rolled strip steel as claimed in claim 1, wherein: The water-cooling pipe (704) is connected to the water pump through the water inlet pipe (705), and the jet pipe (706) is connected to the air compressor through the air inlet pipe (707).

5. A vertical auxiliary coiling system for hot rolled strip steel as claimed in claim 1, wherein: The bottom of the guide groove (701) has a cooling water pool (708).

6. The vertical auxiliary winding system for hot-rolled strip steel according to claim 1, characterized in that: The winding table (1) is located in front of the strip conveyor (3). A lifting drum (3) capable of descending and extending from the surface of the winding table (1) is provided at the center of the winding table (1). At least one slot (301) for locking the end of the strip is provided on the lifting drum (3) along its height direction.

7. A vertical auxiliary coiling system for hot rolled strip steel as claimed in claim 1, wherein: The strip clamping mechanism includes lifting and moving components (4) located on both sides of the end of the strip conveyor (3). The lifting and moving components (4) include a horizontal guide rail (401) and a longitudinal slider (402) that slides along the horizontal guide rail (401). A lifting guide rail (403) is vertically arranged on the longitudinal slider (402). A lifting slider (404) is arranged on the lifting guide rail (403). A crossbeam (5) is arranged between the two lifting sliders (404). The crossbeam (5) has a transverse screw (501) and two clamping sliders (6) that are driven by the transverse screw (501) to separate and close. Each clamping slider (6) is provided with a rotating shaft (601) driven by a motor to rotate below it, and a clamping roller (602) for clamping the strip is located at the bottom of the rotating shaft (601).

8. A vertical auxiliary coiling system for hot rolled strip steel as claimed in claim 7, characterized in that: The horizontal lead screws (501) are two horizontally arranged, and the clamping slider (6) is provided with threaded holes that cooperate with these two horizontal lead screws (501).

9. A vertical auxiliary coiling system for hot rolled strip steel as claimed in claim 7, characterized in that: Limiting blocks (405) are provided at both ends of the horizontal guide rail (401).

10. A vertical auxiliary coiling system for hot rolled strip steel as claimed in claim 1, characterized in that: The clamping power roller (702) is provided with a gathering plate (703) on both sides, and the two gathering plates (703) are arranged in a V-shape.

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