A method for reeling in small and medium-sized coiled snails

Abstract

A method for winding small and medium-sized coiled rebar is disclosed. The rebar is wound using a horizontal coiled rebar winder. A force-driven clamping wheel mechanism is installed on the slider of the winder. When loaded, the force-driven clamping wheel mechanism clamps and conveys the rebar backward. Two limiting wheels are rotatably installed at the tail end of the rebar guide tube. Behind the limiting wheels is a force-driven and release-enabled rebar pressure bending mechanism. When loaded, the rebar after passing the limiting wheels is bent into an arc shape. The rebar does not rotate before reaching the retractable drum. Before the rebar begins to rotate, the retractable drum is in a retracted state. The force-driven clamping wheel mechanism loads and conveys the rebar backward, while the rebar pressure bending mechanism, after passing the limiting wheels, bends the rebar into an arc shape and winds it onto the retracted drum. When the number of turns of the rebar is greater than or equal to 10, the retractable drum expands, and simultaneously, a motor drives the retractable drum to rotate. This invention improves winding efficiency.

Description

[0001] This invention relates to the production of small and medium-sized coiled steel bars, and particularly to a method for winding small and medium-sized coiled steel bars, belonging to the field of cold-rolled steel bar production technology. Background Technology

[0002] In recent years, high-ductility cold-rolled ribbed steel bars have received policy promotion from the National Development and Reform Commission and relevant provincial and municipal departments due to their superior performance and energy-saving, material-saving, and environmentally friendly characteristics, indicating unlimited development prospects. The production line independently developed by the applicant can achieve high-speed, continuous, automated, and large-scale production of φ5~12mm CRB600H and CRB680H cold-rolled ribbed steel bars in coils and straight bars, reaching international leading levels. Currently, the production lines for medium and small coiled rebar use horizontal coiled rebar take-up devices in the receiving section. Existing horizontal coiled rebar take-up devices employ an expanding and contracting drum and a driven baffle that can be simultaneously expanded and contracted during the expansion and contraction process. This equipment is existing, as described in the background art of Chinese Patent Application No. 2018109413722. Chinese Patent Application No. 2014208337357 discloses an expandable and contractible take-up reel, which is an expanding and contracting drum. Before the winding begins, a worker needs to use steel bar pliers to clamp and guide the rebar to the designated position on the take-up device. Then, the take-up device rotates, winding the steel bar onto the drum sheet. During the winding process, the cycloidal device moves left and right to guide the steel bar to be arranged neatly layer by layer until the specified weight is reached. Then, the flying shears cut the steel bar, the take-up device stops rotating, the sheet retracts, and the conveyor trolley sends the coiled rebar to the packaging position, thus completing one take-up process. Currently, in the take-up process, manual labor is required to guide the steel bars into the take-up device. To ensure worker safety, the production line speed needs to be reduced to 0.5-1m / s or lower during the threading process, which seriously affects production efficiency. Moreover, the existing cold-rolled steel bar production line is a continuous automatic production line. When the speed is reduced at the take-up point, the entire production line needs to decelerate synchronously. This frequent deceleration and acceleration can easily lead to instability in the production line. Instability can cause product quality problems and also lead to high energy consumption. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned problems existing in the current production of small and medium-sized coiled snails and to provide a method for collecting small and medium-sized coiled snails.

[0004] To achieve the objective of this invention, the following technical solution is adopted: a method for winding small and medium-sized coiled rebar, wherein the small and medium-sized coiled rebar is wound using a horizontal coiled rebar winding device. The expansion and contraction drum of the horizontal coiled rebar winding device is driven by a motor. The horizontal coiled rebar winding device is also equipped with a cycloidal device, which includes a ball screw driven by a motor. A slider is installed on the nut of the ball screw, and a machine base is connected to the slider. A bell-shaped guide tube is installed on the machine base. A vertical guide roller and a horizontal guide roller are installed in front of the bell-shaped guide tube. The rebar passes through the guide rollers and the bell-shaped guide tube. A force-driven clamping wheel mechanism is installed in front of the bell-shaped guide tube. When the force-driven clamping wheel mechanism is loaded, it clamps the rebar and conveys it backward. When the force-driven clamping wheel mechanism is released, it does not generate a force for conveying the rebar backward. Two limit wheels are rotatably installed at the tail end of the rebar guide tube. After the rebar comes out of the rebar guide tube, it enters between the two limit wheels. After the limit wheels, there is a force-driven and releaseable rebar pressure bending mechanism. When the rebar pressure bending mechanism is loaded, the rebar after passing the limit wheel is bent into an arc shape. When the rebar pressure bending mechanism is released, it does not exert any force on the rebar after passing the limit wheel. The expansion and contraction drum does not rotate before the rebar reaches the expansion and contraction drum. Before the expansion and contraction drum starts to rotate, it is in a retracted state. The driving force clamping wheel mechanism loads and clamps the rebar and transports it backward. The rebar pressure bending mechanism loads and bends the rebar after passing the limit wheel into an arc shape and winds it onto the retracted drum. Each time the rebar is wound, the ball screw drives the slider to move by a corresponding wire diameter, so that the rebar is wound around the axial direction of the retracted drum. When the number of rebar wounds is greater than or equal to 10, the expansion and contraction drum expands and the motor drives the expansion and contraction drum to rotate. The driving force clamping wheel mechanism and the rebar pressure bending mechanism are released. The rebar is wound by the drum rotation and the cycloidal device. When the expansion and contraction drum is in a retracted state before it starts to rotate, the driving force clamping wheel mechanism outputs the rebar at a speed greater than or equal to 170m / min.

[0005] Furthermore, the lower part of the machine base is hinged to the slider, and an inclined drive cylinder is connected to the machine base. Before the expansion and contraction drum starts to rotate, the inclined drive cylinder drives the machine base to tilt backward. When the expansion and contraction drum starts to rotate, the inclined drive cylinder drives the machine base to reset until the rebar guide tube is in the horizontal direction. When the expansion and contraction drum is in the retracted state before it starts to rotate, the speed at which the force-driven clamping wheel mechanism outputs the rebar backward is greater than or equal to 200m / min.

[0006] Furthermore, before the expansion and contraction drum begins to rotate, the diameter of the circle formed by the steel bar bent into an arc shape by the steel bar pressure bending mechanism is greater than or equal to the diameter when the expansion and contraction drum retracts, but less than the diameter when the expansion and contraction drum expands.

[0007] The positive and beneficial technical effects of this invention are as follows: This invention can ensure that the winding speed is not less than 200m / min at the beginning of winding, which greatly improves the winding efficiency. Moreover, it does not require manual winding clamping, so there is basically no safety risk. In continuous production, it can ensure the stability of the production line movement, ensure product quality, and also has a certain energy-saving and consumption-reducing effect. Attached Figure Description

[0008] . Figure 1 This is a schematic diagram of the overall cash register used in this invention.

[0009] Figure 2 This is one of the enlarged views of a section of the take-up device.

[0010] Figure 3 yes Figure 2 A magnified view of a portion of the base.

[0011] Figure 4 This is the second enlarged view of one side of the take-up device.

[0012] . Figure 5 This is a magnified view of the other side of the take-up device. Implementation

[0013] To more fully explain the implementation of the present invention, implementation examples are provided. These implementation examples are merely illustrative of the present invention and do not limit the scope of the present invention.

[0014] The labels in the attached diagram are as follows: 1: Expansion / contraction drum; 2: Drum drive motor; 3: Ball screw; 4: Screw drive motor; 5: Linear guide rail; 6: Slider; 7: Machine base; 8: Tilting cylinder; 9: Cantilever; 10: Wheel frame; 11: Motor; 12: Cylinder; 13: Driving wheel; 14: Driven wheel; 15: Vertical guide roller; 16: Bending cylinder; 17: Rebar guide tube; 18: Upper limit wheel; 19: Lower limit wheel; 20: First bending roller; 21: Second bending roller; 22: Third bending roller; 23: Horizontal guide roller; 24: Trumpet-mouth guide tube; 25: Drive arm; 26: Guide block.

[0015] First, the take-up device used in this method will be described. This take-up device is an improvement upon existing take-up machines. The only innovation in the take-up device compared to existing devices is the mechanism of counterweight on the ball screw-driven slider; the other parts of the take-up device are the same as existing take-up machines. The direction of this invention is backwards, with the direction of rebar travel as the reference direction.

[0016] Figures 1 to 5This invention relates to a method for winding small and medium-sized coiled reels. The reel is wound using a horizontal coiled reel winding device, which includes an expanding drum 1 driven by a drum drive motor 2. The device also features a cycloidal mechanism, comprising a motor-driven ball screw 3 driven by a screw drive motor 4. A slider 6 is mounted on the nut of the ball screw, and the slider is fitted onto a linear guide rail 5. This is the configuration of a conventional winding device. The lower part of the base 7 is hinged to the slider, and the lower end of the tilting cylinder 8 is hinged to the slider. The upper and lower ends are hinged to the machine base. A pair of vertical guide rollers 15 are rotatably mounted on the front end of the machine base. A pair of horizontal guide rollers 23 are rotatably mounted behind the vertical guide rollers. A bell-shaped guide tube 24 is fixedly mounted on the base of the horizontal guide rollers. A steel bar guide tube 17 is fixedly connected to the machine base behind the bell-shaped guide tube. There is a gap between the bell-shaped guide tube and the steel bar guide tube. A clamping wheel mechanism with load-and-release driving force is installed in the gap. The clamping wheel mechanism with load-and-release driving force includes a drive wheel 13 rotatably connected below the gap. The drive wheel 13 is driven by a motor 11. A driven wheel 14 is rotatably mounted on the upper and lower slide plates. The upper and lower slide plates are configured on the upper and lower slide rails and are fixedly connected to the cylinder rod of the cylinder 12. When the motor drives the driving wheel to rotate and the cylinder drives the driven wheel to clamp the steel bar between the driving wheel and the driven wheel, the steel bar is conveyed backward, which drives the clamping wheel mechanism to load. When the cylinder lifts the driven wheel and the motor does not drive the driving wheel to rotate, the clamping wheel mechanism is released. A cantilever 9 is fixedly connected to the rear end of the base. An upper limit wheel 18 and a lower limit wheel 19 are rotatably mounted on the rear end of the cantilever 9. The wheel frame 10 is hinged to the rear end of the cantilever. In this embodiment, the hinge axis of the wheel frame is concentric with the rotation axis of the upper limit wheel. Three curved rotating wheels are installed on the wheel frame in an arc shape. The curved rotating wheels are grooves. The diagram shows three bending wheels: the first bending wheel (shown as 20), the second bending wheel (shown as 21), and the third bending wheel (shown as 22). Guide blocks 26 are fixedly installed between adjacent bending wheels, each with a V-groove for wire passage. The bending cylinder body is hinged to the machine base, and the cylinder rod is hinged to the drive arm 25, which is also hinged to the wheel frame. The bending cylinder, bending wheels, and tilting cylinder constitute a rebar pressure bending mechanism capable of loading and releasing. When the rebar pressure bending mechanism is loaded, the bending cylinder drives the wheel frame to lower, and the bending pressure is controlled by the hydraulic pressure of the cylinder. After passing through two limit wheels, the rebar becomes arc-shaped after passing through the bending wheels and spirals around the retracted drum with the help of the lead screw. When the rebar pressure bending mechanism is released, the bending cylinder drives the wheel frame to retract, and the rebar is no longer bent. Optimally, when the bending cylinder drives the wheel frame to lower, the tilting cylinder can be selected to drive the machine base to tilt backward so that the rebar spirals better onto the drum. When the rebar pressure bending mechanism is released, the tilting cylinder drives the machine base to keep the rebar guide horizontal.

[0017] This invention provides a method for winding small and medium-sized coiled rebar. A force-driven clamping wheel mechanism is installed before the rebar guide tube. When loaded, the force-driven clamping wheel mechanism clamps the rebar and conveys it backward. When released, it does not exert any force on the rebar. Two limiting wheels are rotatably installed at the tail end of the rebar guide tube. After exiting the rebar guide tube, the rebar enters between the two limiting wheels. Behind the limiting wheels is a force-driven and release-enabled rebar pressure bending mechanism. When loaded, the rebar after passing the limiting wheels is bent into an arc shape. When released, the rebar pressure bending mechanism does not exert any force on the rebar after passing the limiting wheels. The expansion and contraction drum does not rotate before the rebar reaches it. When winding a coiled rebar, the expansion and contraction drum is in a retracted state before it begins to rotate. The force-driven clamping wheel mechanism loads and clamps the rebar, conveying it backward. The rebar pressure bending mechanism loads and bends the rebar after passing the limiting wheels, bending it into an arc shape and winding it onto the retracted drum, where it is bent by the rebar pressure bending mechanism. The diameter of the circle formed by the arc-shaped reinforcing bar is greater than or equal to the diameter of the retracted drum, but less than the diameter of the expanded drum. Each time the reinforcing bar is wound, the ball screw drives the slider to move by a corresponding wire diameter, causing the reinforcing bar to wrap around the axial direction of the retracted drum. When the number of turns is greater than or equal to 10, the expanded drum expands, and simultaneously the motor drives the drum to rotate, releasing the force-driven clamping wheel mechanism and the reinforcing bar pressure bending mechanism. The drum rotation, in conjunction with the cycloidal mechanism, retracts the wire (this is the existing wire retraction method). The lower part of the machine base is hinged to the slider, and a tilting drive cylinder is connected to the machine base. Before the expanded drum starts rotating, the tilting drive cylinder drives the machine base to tilt backward. When the expanded drum starts rotating, the tilting drive cylinder drives the machine base to reset until the reinforcing bar guide tube is horizontal. Before the expanded drum starts rotating and is in the retracted state, the force-driven clamping wheel mechanism outputs the reinforcing bar at a speed greater than or equal to 200 m / min.

[0018] Compared with the prior art, the method of the present invention has made improvements and innovations to the cycloidal device. Traditional cycloidal devices do not have the steel bar pressure bending mechanism of this method, and the base is directly fixed to the slider.

[0019] The winding method of the present invention has been tested and can achieve a winding speed of 200m / min when the roll is retracted at the beginning of winding.

Claims

1. A method for winding up small and medium-sized coiled reels, wherein the coiled reels are wound up using a horizontal coiled reel winding device, the expansion and contraction drum of the horizontal coiled reel winding device is driven by a motor, the horizontal coiled reel winding device is also equipped with a cycloidal device, the cycloidal device includes a ball screw driven by a motor, a slider is installed on the nut of the ball screw, a base is connected to the slider, a rebar guide tube is installed on the base, a guide wheel is installed in front of the rebar guide tube, and the rebar passes through the guide wheel and the rebar guide tube, characterized in that: A force-driven clamping wheel mechanism is installed before the rebar guide tube. When loaded, the force-driven clamping wheel mechanism clamps the rebar and transports it backward. When released, it does not exert any force on the rebar. Two limiting wheels are rotatably installed at the tail end of the rebar guide tube. After exiting the rebar guide tube, the rebar enters between the two limiting wheels. Behind the limiting wheels is a force-driven rebar pressure bending mechanism. When loaded, the rebar after passing the limiting wheels is bent into an arc shape. When released, the rebar pressure bending mechanism does not exert any force on the rebar after passing the limiting wheels. The expansion and contraction drum does not rotate before the rebar reaches it; it is in a retracted state before it begins to rotate. The power-driven clamping wheel mechanism loads and clamps the reinforcing bar, which is then conveyed backward. The reinforcing bar pressure bending mechanism loads the reinforcing bar, which, after passing through the limit wheel, is bent into an arc and wound onto the retracted drum. Each time the reinforcing bar is wound around, the ball screw drives the slider to move by a corresponding wire diameter, so that the reinforcing bar wraps around the circumference of the retracted drum. When the number of reinforcing bar wraps is greater than or equal to 10, the expansion drum expands and the motor drives the expansion drum to rotate, releasing the power-driven clamping wheel mechanism and the reinforcing bar pressure bending mechanism. Through the rotation of the drum and the cooperation of the cycloidal wire take-up, the speed at which the power-driven clamping wheel mechanism outputs the reinforcing bar backward is greater than or equal to 180 m / min when the expansion drum is in the retracted state before it starts to rotate.

2. The method for winding up small and medium-sized coiled snails according to claim 1, characterized in that: The lower part of the machine base is hinged to the slider, and an inclined hydraulic cylinder is connected to the machine base. Before the expansion and contraction drum starts to rotate, the inclined hydraulic cylinder drives the machine base to tilt backward. When the expansion and contraction drum starts to rotate, the inclined hydraulic cylinder drives the machine base to reset until the rebar guide tube is in the horizontal direction. When the expansion and contraction drum is in the retracted state before it starts to rotate, the speed at which the clamping wheel mechanism driven by the driving force outputs the rebar backward is greater than or equal to 200m / min.

3. The method for taking in small and medium-sized coiled snails according to claim 1, characterized in that: Before the expansion and contraction drum starts to rotate, the diameter of the circle formed by the steel bar bent into an arc shape by the steel bar pressure bending mechanism is greater than or equal to the diameter when the expansion and contraction drum retracts, but less than the diameter when the expansion and contraction drum expands.

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