Transformer winding machine is used to wind transformer coil special equipment, in the process of transformer coil production, according to the transformer voltage level or capacity to divide the winding equipment, there are high and low voltage distribution transformer winding machine and foil coil winding machine; There are vertical winding machines and horizontal winding machines for winding large power transformer coils. Choosing the right transformer winding equipment is the key to the production of high-performance transformers, according to different needs to choose, transformer winding machine can be divided into the following types, automatic wire winding machine rn automatic wire winding machine is a special equipment for winding high-voltage coils of distribution transformers. The coil made by this equipment has the advantages of compact structure, small volume and high strength. In order to further improve production efficiency, the speed of the new winding machine is increased from 300rad/min to 500rad/min. The wiring mechanism is increased from a single head to two or three heads, that is, three coils can be wound at the same time. At the same time, multiple wires (4) are used and wound; Add radial pressing mechanism; The tension of each pay-off coil is controlled, so that the winding wires are arranged neatly, the turns are tight and uniform, and the current density is evenly distributed.

At the same time, it is equipped with end insulation unwinding mechanism and wire tensioning mechanism, and the computer can set a variety of parameters, which can make the coil winding complete once, greatly improve the degree of automation, and reduce the labor intensity of workers. rn Foil coil winding machine Foil coil winding machine is the key equipment for winding low-voltage foil coils. Tension control and foil tape correction are the key technologies of foil coil winding machine. The foil tension of the existing domestic or imported foil coil winding machine is generated by mechanical friction, and its tension is not stable enough, which will cause defects such as uneven tightness of the wound coil, inconsistent DC resistance between the coils, and excessive outside diameter of the coil. rn domestic manufacturers have developed a new digital foil winding machine, the machine uses DC motor to generate foil tension, which is characterized by convenient tension adjustment, accurate, good stability, the whole process of winding tension remains unchanged, so as to ensure the winding quality of the coil. In particular, its wide tension adjustment range is more suitable for thin foil tape winding, and will not cause damage to the end of the foil tape. Moreover, the tension motor is in a power generation state when it is in a tension state, and the electricity generated can be fed back to the winding motor or the power grid, and the friction energy consumption of the frictionless braking tension mode is significant in energy saving. Moreover, the control system will automatically calculate the coil diameter of the uncoiler, so as to adjust the output torque of the motor at any time to ensure the constant tension during the entire winding process, which plays a key role in ensuring the quality of the coil. At the same time, the deviation adjustment system of the equipment adopts photoelectric analog sensor to detect the edge of the foil strip without contact, and dynamically corrects the deviation through the servo motor. The system has high precision, fast response, high reliability and high deviation adjustment precision. According to the available data, the technology of the equipment has been at a high level.

The larger the transformer capacity used by the transformer winding machine now, the greater the impact on the power grid, and the requirements for its safety are getting higher and higher. The manufacturing quality performance of the transformer not only requires reliable electrical performance, but also more reliable mechanical stability and short-circuit resistance. The stability is mainly reflected in the manufacturing process control of the coil, that is, the electromagnetic balance of the high and low voltage coil is required, and the axial turns are tight and evenly distributed. Therefore, it is required that the coil winding process should be axially compressed and radial coiled. The vertical winding machine is used to make use of the self-weight of the wire cake, and the axial compression is natural, and the radial tension device is used to control the tension. Therefore, the winding of high-voltage coils in large transformers is generally used in vertical winding machines, and even low-voltage spiral coils are also produced by vertical winding machines. The current vertical winding machine has been further developed to large scale. The original vertical winding airborne weight is only 20t, now it has been increased to 40t, the coil diameter is large to 3500mm, and the height is large to 4000mm. The tension control is more accurate, stable and reliable with the use of airbag plate tensioning device and digital display of tension. In order to improve the dimensional accuracy of the winding coil, the radial runout of the vertical winding machine is controlled, and the shaft head fixing device of the winding die is added. In order to control axial runout, high-precision double-row roller type large bearings are used. Therefore, by using special equipment for coil winding, the winding production has reached a new level. Thus, it is possible for the transformer to further reduce the loss, reduce the local discharge, reduce the weight and reduce the cost. Horizontal winding machine, from the perspective of transformer winding structure design, not all the coils can be produced by vertical winding machine. Such as layer structure, multi-helix structure type coil. If the coil is wound by an ordinary horizontal winding machine, the axial winding is done without any pressure, and the line gap is very large, like a compression spring. The diameter of the coil becomes larger after compression, and the gap between the coil and the paper tube will cause the axial instability of the coil. In case of axial electric force, the coil may cause damage. Therefore, the horizontal winding machine with axial and radial compression has been widely used in the production of large transformer coils. With the increasingly high performance requirements of transformers, the production of general small and medium-sized transformers has gradually begun to use compression horizontal winding machines. In order to control the compression force more accurately, the torque motor or cylinder used in the original compression mechanism to generate pressure has been replaced by a servo motor. In order to control the dimension tolerance of winding coil, grating ruler is added to measure the dimension of winding coil online. The pay-off tension of each reel on the multi-axis pay-off car is controlled. According to the length of the winding coil, the pay-off car follows up to avoid new stress caused by the distortion of the wire and reduce the eddy current loss of the winding.

Transformer winding machine is an important core production equipment in the production process of transformer, its winding performance determines the electrical characteristics of the transformer and whether the coil is beautiful, transformer winding machine is mainly divided into three categories: Horizontal winding machine, vertical winding machine, automatic winding machine they are used in the production of transformers in different fields, with the development of technology, the progress of the winding machine is also great, mainly reflected in the function and winding performance.

First, the correct setting of the parameters of the transformer winding machine whether the winding machine can work properly plays a key role, the transformer winding machine is different from other winding machine is a slow running equipment, because the production process of the transformer determines the frequent start and constant torque requirements of the equipment, the general transformer winding machine needs to set the parameters are: The number of turns is the number of turns that the equipment needs to run according to the production process, which is divided into the total number of turns and the number of turns corresponding to each step, and the setting is that the total number of turns is equal to the sum of the number of turns of each step. The setting of the local function is also a commonly used parameter, which is mainly to control the slow running of the equipment when starting and stopping, to play the role of soft start and parking buffer, the correct setting can allow the operator to have a process to adapt to the tension when starting the winding machine, and when the equipment stops, the buffer can stop more accurately; The running speed is used to control the speed of the equipment during operation, and the setting of the speed needs to be combined with the production process and the actual working conditions of the winding. Too fast and too slow are not conducive to the forming of the coil. Fast running will not be conducive to the control of the operator, and increase the vibration and noise of the equipment. It will also affect the torque output of the equipment spindle; Step function is used to control the order of equipment operation, it is generally determined according to the production process, the forming of a coil winding is not only the winding of enameled wire, there are many other steps such as wrapping paper layer, wrapping insulation cloth, etc., so the correct setting of step function will effectively play the efficiency of the equipment.

Second, the correct loading and unloading mold and shaping winding machine only the correct use of the winding mold can work normally, the correct loading and unloading mold plays a key role in the formation of the coil, the loading and unloading process of the mold is generally to loosen the fastening device, and then remove the thimble tail frame of the equipment, and then use the shifting device to remove the coil. During installation, it should be noted that the mold should be installed on the fixed device of the winding machine first, and the thimble tail frame should be adjusted to support the winding mandrel, and then it should be locked; When shaping the coil during winding, the thimble should not be loosened and the equipment should be in a stopped state. Only when handled properly can the efficiency of the equipment be better played.