Coiling Machine Structure Principle

According to the design structure principle, its steel plate winding machine is positioned in the application of steel production line to realize the automatic winding of fixed width products.

In order to meet the requirements of production line automation and winding quality, double-station variable frequency winding is adopted, and the electrical control system adopts industrial grade system.

Combined with the touch screen, the principle of constant voltage control is understood in detail on the basis of the introduction of the operation process of the dual station winding, and the working principle, hardware design and touch screen interface design control system.

At present, winding machines, including frames, are equipped with winders.

The winder includes friction rolls and air lift shafts arranged in parallel, as well as a pressure mechanism for the pressure mechanism. The air lift shafts are located close to or away from the friction rollers.

Smaller diameter winding rolls allow for rapid change of winding rolls by changing the diameter of existing winding rolls.

A temporary storage mechanism and a support roller are provided. The feeding mechanism of the automatic steel strip winder can be placed in the temporary storage mechanism of the preparation roller, even if the speed of the roll change winder is very fast.

In the temporary storage mechanism for support rolls, the support rolls are also fed into the structure of the rewind roller winder.

The temporary storage of support rolls in this mechanism can be prepared in time without manual assistance and can safely increase the production efficiency.

Now it belongs to the production of steel or existing technology mechanical slitting rewinder to solve the problem of prior art unloading mechanism steel, it is difficult to achieve high-speed operation or reciprocating operation, and its high-speed standby unstable technical solutions.

General film roll winding is tight inside and loose outside, in order to achieve this purpose, the winding process, the pressure of the pressure arm acting on both ends of the winding shaft should be gradually reduced, can be achieved by gradually reducing the gas pressure of the cylinder to achieve this purpose.

Proportional pressure valve can be used, input control current to control the amount of pressure, but this approach is more complex.

Another simple method is to directly use the cylinder and the pressure arm of the angle change to achieve. The torque of the cylinder acting on the press arm is T=FLcosα, and as the winding process proceeds, α becomes larger and larger, then the torque T becomes smaller and smaller.

The above winding form only provides a single winding position, so it can‘t realize automatic reel change.

Changing rolls will cause waste of roll material, and the degree of waste depends on the proficiency of the operator. There is another single-roll surface winder configuration that provides two winding positions and allows for non-stop reel change.

The process is to start with the core shaft with the paper core on the swing arm II for winding, when the film roll diameter reaches the requirement, the cylinder 8 drives the swing arm II to swing outward and place the film roll to the unwind position.

At this time, cutter 5 moves to cut off the film.

When cutting off the film material, the spare paper core is lowered to the swing arm I. The paper core is pre-laminated with double-sided tape, and the cut film material is rolled onto the new paper core.

The swing arm II places the film role in the unloading position and then swings back under the action of the cylinder, close to the winding roll. The swing arm I rotates and exchanges the already primed film roll to the swing arm II to continue winding. A cycle is thus realized.

Set up the program, the winder can automatically and continuously move to achieve automatic cut-off and automatic roll change.

Surface winding rolls I and II drive the film roll for winding, and the center of the film roll rises vertically as the roll diameter increases.

In the top of the film roll set pressure roller 6, the roller through the cylinder or cylinder action on the film roll, to increase the friction between the film roll and the surface winding roller, especially in the film roll diameter is very small its role is more important.

With the increasing quality of the film roll, the friction between the film rolls and the winding roller also increases, which will make the film roll tighter and tighter, and thus the film will be pressed out of wrinkles.

In order to avoid this defect, the diameter of the film roll gradually increases, the pressure of the pressure roller should be gradually reduced to maintain the air pressure or liquid pressure and the gravity of the film roll and a constant.

In order to make the winding roller have enough traction force on the film, the film and the surface winding roller I should have a large wrap angle.

In order to roll tightly, the surface linear speed of winding roller II should be slightly larger than that of winding roller I.

Two-roller surface winder can be changed to three-roller or four-roller winder by increasing the winding roll, which serves to increase the work station of winding.

To change the roll, the film roll will be moved to the back of the roll, in the original position on the new paper core, and then the film material can be cut off, rolled into the new core, thus reducing the time taken when changing the roll.

Single-roller surface winder is commonly used for packaging film winding, while double-roller surface winder is commonly used for agricultural film winding.

Advantages of surface winding.

1) Simple structure, the film roll is supported by the surface drive roll, the winding shaft is under small force and does not need large rigidity.

2) Easy to control, the linear speed of the film roll is basically the same as the surface winding roll, and the speed of winding can be achieved by changing the speed of the motor driving the winding roll. The size of the roll diameter has no effect on the speed of winding.

3）Surface winding can be tightly wound for general films.

Disadvantages of surface winding.

1) Not applicable to particularly smooth, easy to rub material.

2) Not suitable for winding films of large thickness.