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10

2023-07

How to Use Cold Rolling Mill and Wire Take-up Mill Together

As a commonly used rolling equipment, the cold rolling mill can roll different specifications and shapes. The rolled products include threaded steel bars, flat steel, spiral blades, shaped steel, etc. After rolling out the finished products, the collection of the finished products can also be divided into two types. One is for straightening and cutting, and the other is for winding. The winding and straight strip should be based on the customer's needs, as well as the characteristics of the product. Some can be wound, while others can only be cut into straight strips. Today, we will introduce how to roll the coil after being rolled by a cold rolling mill. To roll up, the first step is to choose a suitable wire winding machine, such as a two rib cold rolling mill and a flat steel cold rolling mill. For these two types of cold rolling mills, after rolling out the product, usually a one ton or two ton wire winding machine is selected. Due to the fast speed of the cold rolling mill, the time required to fully collect a plate of finished products is about half an hour. If a small and heavy coiling mill is used, it will take about ten minutes to close a plate. Therefore, after closing a plate, the machine needs to be shut down and replaced with a new coiling plate. This reciprocating operation not only wastes manpower, but also increases power consumption. Therefore, choosing a one ton or two ton winding machine for winding is an ideal choice.

2023-07-10

10

2023-07

What is the lifespan of the gearbox of an inverted wire drawing machine?

The gearbox of an inverted wire drawing machine is the main part of an inverted wire drawing machine, also known as a reducer. Like commonly used horizontal JZQ reducers or cycloidal pinwheel reducers, it plays a role in reducing speed and increasing torque. Common reducers are mostly national standard models, with corresponding mechanical standards for speed ratios and motor sizes. The gearbox of the inverted wire drawing machine is self-developed and designed according to the operational needs of the equipment. The installation size and speed ratio are determined according to the wire drawing needs. The gearbox of the inverted wire drawing machine is divided into three levels of transmission. The first level is bevel gear transmission, which changes the direction of force. The last two levels of transmission are both cylindrical helical gear transmission. The first stage bevel gear is made of high-quality material, 40 chromium molybdenum, which has good wear resistance and impact resistance. The processed gear is also subjected to gear grinding and heat treatment, making the transmission noise small and the clearance fit good. The secondary and tertiary transmission gears of the gearbox of the inverted wire drawing machine are made of 45 # steel and cast. After being processed and heat treated by a hobbing machine, the gears also meet certain matching requirements. Two thirds of the Gear oil shall be added to the gearbox of the inverted wire drawing machine before use, and the inverted wire drawing machine shall be started for idling to let the gears in the gearbox run in for a period of time, so that the gears at the upper position also have lubricating oil to maintain the lubrication of the entire gearbox. The service life of the gearbox of the inverted wire drawing machine is properly maintained, with a general service life of about ten years. When starting the machine, follow certain steps and do not forcefully start it. Check the gearbox once a month to see if there is any shortage of oil or oil leakage. If it is repaired in a timely manner, if the gearbox of an inverted wire drawing machine is short of oil for a long time, the gears cannot be lubricated, and the friction coefficient between the gears increases. In severe cases, tooth breakage may occur, causing unnecessary trouble.

2023-07-10

10

2023-07

How to choose the take-up frame for an inverted wire drawing machine

The wire winding frame of the inverted wire drawing machine is used for the winding work after wire drawing. The inverted wire drawing machine is a device that integrates drawing and wire winding, which not only reduces the process but also reduces the floor area. Inverted wire drawing machines can be divided into various models based on the size of the drawing drum, including 600, 800, 1000, 1200, etc. The range of raw materials processed by different models of inverted wire drawing machines also varies. Generally, the larger the diameter of the drum, the greater the power of the motor equipped, and the larger the range of raw materials processed. The take-up frame of an inverted wire drawing machine is proportional to the wire drawing drum, and the larger the drum, the larger the diameter of the take-up frame. There are two types of take-up frames for inverted wire drawing machines: active and passive. The active take-up frame is driven by an electric motor, and the speed of the take-up frame is consistent with the speed of the wire drawing drum. The steel bars fall into the take-up frame and rotate together with the frame. The steel bars rotate on the take-up frame from inside out and from low to high, and the collected steel bars are arranged in a staggered manner, making it convenient for wire laying operations with the steel bars. The passive take-up frame is not driven by a motor, but is fixed on a rotating disc. Two follower arms are lowered from the wire drawing drum to fix the inverted take-up frame on it. The wire drawing drum rotates, and the take-up frame rotates accordingly. Both active and passive inverted take-up racks have their own advantages. The active type is driven by a motor and is equipped with a frequency converter. When the diameter of the take-up reel decreases, the speed of the take-up rack can be changed through the frequency converter to accelerate the take-up speed of the reel and make the diameter of the steel bar reel smaller. Conversely, it becomes larger, so that the tension inside and outside of the take-up reel is consistent and convenient for wire laying. The passive pay-off rack works with the wire drawing drum, resulting in lower equipment costs. When the take-up reel becomes loose or too tight, workers need to manually move it.

2023-07-10

10

2023-07

How to adjust the speed of the steel wire winding machine

The steel wire winding machine is used for collecting cold drawn wire and is usually used in conjunction with other equipment, placed in the final process. The finished product processed by a wire drawing machine or a cold rolling machine is finally closed, bundled, and stored using a steel wire winding machine. The steel wire winding machine and other equipment should be used together to form a production line with consistent speed matching. The speed of the winding machine should be faster than the previous one, and there should be enough tension to make the harvested disc firm and compact. A conventional steel wire winding machine consists of a machine body, a winding disc, a wire arranger, and a control system. The motor is a torque motor with high torque and adjustable speed, and the appropriate torque motor is selected according to the different closing weights. The torque motor of the steel wire winding machine is connected by a variable speed controller. When the wire winding machine first rotates, the speed is adjusted to the minimum, and then slowly accelerates until the speed increases to be close to the output speed of the previous process. At this time, the steel wire can be seen to be tense. The wire arrangement device of the steel wire winding machine is used to organize the steel bars, so that the steel bars are evenly wrapped layer by layer on the winding wheel. The speed of the wire winding device and the speed of the I-shaped wheel should match well. The speed ratio should be adjusted to the appropriate parameters through sprocket and chain transmission in the middle. Finally, the wire winding wheel should rotate once, and the wire winding device should just go from one side of the wire winding wheel to the other. During operation, the steel wire winding machine should match the running speed of other equipment, such as flat steel mills, steel wire drawing machines, etc. The finished products produced must use the steel wire winding machine. The speed of the steel wire winding machine should be slightly faster than the speed of the previous equipment, so that the steel bars are in a tight state between the two equipment. This way, the steel bars will be tightly wound on the I-shaped wheel, arranged in an orderly manner, and convenient for subsequent bundling work. When the steel wire winding machine is started, the speed is at its lowest. Slowly rotate the knob on the torque controller to increase the speed. When the steel wire reaches tension, stop adjusting and observe the operation for a few minutes. If the current does not exceed the standard, it can continue to operate; If the current is overloaded, the speed can be appropriately reduced. The steel wire winding machine is controlled by a torque controller for speed regulation, making it convenient and easy to operate.

2023-07-10

10

2023-07

How to Make the Takeup Tighter with an Inverted Wire Drawing Machine

After drawing, the inverted wire drawing machine can take up the wire at the bottom. Generally, the steel bars drawn by the inverted wire drawing machine can be folded into a two ton disc. The inverted wire drawing and winding process can save more processing time and also save space. The take-up of an inverted wire drawing machine is different from that of an I-shaped wheel take-up machine. This type of take-up involves the automatic dropping of steel bars, and the diameter of the drawing disc on top is equal to that of the falling disc. And the H-wheel winding machine is used to wind up the coil through a wire arrangement device under tension, and the resulting coils are arranged neatly. The diameter of the take-up reel of the inverted wire drawing machine is about 1000mm, which is slightly smaller than the diameter of the wire drawing reel. This advantage can make the wire drop smoother and avoid the phenomenon of jamming. To make the winding of an inverted wire drawing machine tighter, a motor needs to be installed at the bottom to change the winding speed through variable frequency control. When the equipment is running, the operator should carefully observe. At the beginning of the winding, the winding speed should be appropriately increased to make the speed of the closing trolley faster than the speed of the wire drawing disc. This way, the steel bars will be wound around the inner circle of the closing trolley for winding. When the inner circle is wound to a certain position, the speed of the closing trolley is reduced by the frequency converter, and the steel bar falls naturally without being pulled by the closing trolley, falling on the outer circle of the closing trolley. Operate in sequence, and the final collected steel plate is tight and solid.

2023-07-10

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