1. Overview of slitting machine

Slitting machine, also known as slitting line, slitting machine and slitting machine, is a name for metal slitting equipment.

1. Purpose: Suitable for longitudinal shearing of metal strips and rewinding the cut narrow strips into rolls.

2. Advantages: easy operation, high cutting quality, high material utilization, stepless adjustment of cutting speed, etc.

3. Structure: It consists of unwinding (unwinding), material positioning, slitting and coiling (rewinding), etc.

4. Applicable materials: tinplate, silicon steel sheet, aluminum strip, copper, stainless steel plate, galvanized plate, etc.

5. Applicable industries: transformers, motors, home appliances, automobiles, building materials, packaging industries, etc.

2. Adjustment of cutting blade

The adjustment of the slitting cutting edge mainly involves two parameters: the gap and overlap of the cutting edges. Select according to alloy material and thickness. Generally, the gap between the cutting edges is 0.04~0.12 times the thickness of the plate and strip, and the overlap amount can be between 0~4.0mm, which needs to be determined according to different products.

3. Structural composition of slitting line:

1. Storage table: It is used to store raw materials that need to be processed. It is also called the raw material standby area. Generally, 1-2 are customized.

2. Coil transport trolley: The loading trolley transports the waiting raw materials stored in the storage table into the uncoiler, and threads the raw materials into the uncoiler through functions such as rising, falling, and forward and backward movement, usually using visual/manual methods. It can also be made into a fully automatic "V" plane or roller plane.

3. Uncoiler: Usually a single cantilever type is used. If the weight of the raw material is large, an auxiliary support needs to be added to the end of the uncoiler. The uncoiler base usually has the function of moving forward and backward along the parallel direction of the single machine, which can effectively and quickly complete the centering of the raw material. Generally, visual/post-movement method is used, but it can also be made into fully automatic automatic centering, but it requires expensive costs.

A. Conical head uncoiler: The conical head uncoiler is suitable for raw materials with any inner diameter from the cone head to the cone tail. However, since it is easy to cause damage to the edge of the inner ring of the raw material, it is generally suitable for medium-thick raw materials above 3mm.

B. Stepped uncoiler: The uncoiler head of this method is only suitable for multi-standard inner diameter raw materials. It is generally divided into levels 2 to 4. However, the operation is not as intuitive and convenient as the single-head cantilever. Its forward and backward movement is usually driven by an oil cylinder.

4. Pinch feeding, leveling and plate head shearing: The clamping and feeding wheels usually use hydraulic, pneumatic and electric lifting devices. Leveling machines generally use electric lifting and worm gear structures to ensure the stability of lifting and positioning. Hydraulic shears are usually used to ensure that the end of the raw material entering the disc shear is flush. The drive is generally driven by a stepless speed motor to ensure smooth and synchronized line speed of the entire machine.

5. Loop pit: also known as raw material storage buffer pit, usually 2 to 4 meters in depth and 3 to 4 meters in length. It is used as a buffer device to match the speed of the raw material conveying and slitting machine. The looper bridge usually adopts hydraulic and electric, etc. The lifting transition platform feeds the raw materials into the pinch and lateral guide devices. The transition plate generally uses rollers and anti-scratch materials as the raw material contact transition surface.

6. Side guide and clamping device: The side guide is used as a lateral positioning device when the raw material is advancing rapidly. It usually adopts a vertical roller or vertical plate structure to ensure the lateral positioning of the raw material during slitting and prevent it from running away. The edge will cause poor cutting width of the finished product; the clamping device generally adopts a pair of rollers to ensure the flatness of the raw material before shearing.

7. Disc shear: Disc shear, also known as slitting machine, is the core device of this production machine line. It can cut different finished product widths through different combinations of blades and spacers. The precision requirements of its slitting cutter axis are very high. Its longitudinal runout, lateral deflection and mechanical strength all determine the accuracy of the slitting finished product. The accuracy requirements of its auxiliary parts such as circular blades and blade spacers also determine the accuracy of the finished slitting products and the knife arrangement time, which directly affects the processing output. The material withdrawal methods generally include rubber ring withdrawal and pressure plate withdrawal. The positioning of the blade and blade spacer includes nut positioning and the more expensive hydraulic shaft lock.

8. Waste edge coiler: The waste edge coiler uses a disk-type collection device to roll the waste edges after shearing the material into bundles to facilitate the storage and transportation of the waste edge wires. It is usually supplemented by a screw-type guide device. Or a cam linkage guide device, which is driven by a continuously variable speed and tension control motor, supplemented by an emergency stop brake, and has two methods of manual unloading and automatic unloading.

9. Finished product buffer pit: The length is about 3 to 4 meters. The depth is usually about 4 to 7 meters depending on the thickness of the material, the number of strips and the diameter of the raw material roll. When slitting and cutting multiple thin plate materials, the thickness tolerance of the raw material and the uneven tension of the tension production station will cause uneven lengths of the finished products. The looper has functions such as speed buffering and sleeve volume storage.

10. Front separation device: The front separation device is to pre-separate the finished products before entering the tension production station, so that the finished belts will not overlap or overlap when they are squeezed by tension. Generally, it consists of two separate positions and anti-jumping belts. It consists of a pressing wheel. The front section adopts a lifting separation shaft, which can prevent the plastic deformation of the pressed plate caused by the pressing wheel. The separation shaft adopts a movable guide rail to facilitate the sliding and pulling out of the separation shaft to facilitate the arrangement of spacers.

11. Tension generation station: Tension production station is divided into traditional plate tension station, better belt tension station and roller tension station. Adjustable oil pressure is usually used to raise and lower pressure to achieve the function of generating tension. Belt type and roller type Then sliding friction resistance is used to generate tension.

12. The traditional tension station may cause scratches and scratches on the surface of the board due to the relative sliding between the initial tension pad and the strip. The tension generated by the traditional tension station is suitable for almost all materials with a thickness that is not easy to damage the surface or non-bright mirror panels.

13. The belt-type tension station is generated by the sliding resistance difference between the belt and the inner tension roller, and is suitable for surface protection of bright mirror panels. Due to belt gaps and other reasons, material damage may be caused to individual thickness and narrow belts.

14. The roller tension station is suitable for tension generation of thin plates below 0.5. Its working principle is to generate tension through the resistance of the roller or the speed difference between the roller and the belt. For thicker plates, it may cause damage to the roller surface and cannot ensure its use. performance.

The traditional tension generating station is favored by the majority of users because of its uniform tension, simple tension adjustment, simple structure, and easy maintenance. It can easily cause scratches on the finished product and can be solved by attaching a film to the surface. It is also economical and affordable, so it is favored by the majority of users.

15. Clamping and shearing machine: The clamping machine is used as a power supply device when the finished belt enters the winding machine or the power supplying device for feeding the finished material into the winding machine after being cut by the slitting and shearing machine. It is generally used. Gas, oil, electricity and other driving methods are used to complete its due functions. The shearing machine usually uses a hydraulic shearing machine, which has a cross-cutting function when the finished product is divided into rolls, and is equipped with a finished product guide and a flattening wheel.

16. Rewinder: The rewinder is also called the finished product rewinder. It is a device that rewinds the cut finished products into rolls. The rewinding drum adopts an expandable and contractible structure to facilitate the smooth exit of the finished products. A separation device is attached to prevent the finished products from being rolled. The tape crossing, stacking and end-face winding of the finished product are smooth. Hydraulic lift is used, supplemented by a counterbalance valve, which can automatically rise against the resistance when the finished product becomes larger and larger. The push plate device is hydraulically driven to lift the finished tape from the winding drum. Smooth rollout. When collecting heavier finished rolls, an auxiliary supporting device is provided. The driving motor is driven by a constant power DC motor to ensure the coiling power when coiling large rolls of material and to ensure that the tape does not become tower-shaped. There is a quick braking device to prevent pulling the broach.

17. Unloading trolley: It adopts hydraulic lift and "V" structure design to ensure that the finished product coils

4. Related Chinese-English comparisons

1. Steel Coil Saddle Coil Storage

2. Loading Car

4. Coil Opener

5. Pre-leveler

6. Hydraulic shear Shear

7. Transition Roll Table

8. Side Guider

9. Slitter

10. Looper

11. Pre-separator Separation

12. Tension

13. Recoiler

14. Hyd-station

15. Scrap Winder