Introduction and operation method of plastic sheet production line

Plastic sheet production line is a kind of plastic machinery.

How to operate

1. Preheating of the PVC plastic sheet production line at startup: this is the action of heating the mold before starting the machine, and it needs to be preheated to close the mold.

2. Mold closing: Reasonable adjustment of mold opening and closing stroke is beneficial to improve product demoulding and product feeding effect.

3. Preheating of PVC plastic sheet production line: The steam enters the fixed mold to preheat the mold, so that the condensed water and cold air during the retention period are discharged while the mold is preheated. Function: increase the mold temperature and strengthen the apparent fusion degree of the product.

4. Penetration heating: Improve the core and internal fusion of the product. The penetration heating consumption and waste of steam are more serious.

5. Heating on both sides: further enhance the heating effect and improve the surface quality of the product.

6. Warming up (heat preservation): All valves are closed to make full use of the waste heat of the mold to keep the product warm. Conducive to product surface fusion, can save energy (steam).

7 Vacuum cooling: The vacuum valve is opened and the vacuum pump is evacuated. All the waste heat and moisture in the mold and product are evacuated, and part of the foaming agent is removed to prevent the product from swelling. The negative pressure is formed in the mold, which is conducive to the demoulding of the product.

Introduction

1. Horizontal three-roller single-machine sheet machine production line:

( 1 ) The unit is mainly composed of a main engine, a screen changer, a mold, a tablet press, a conveying table, a tractor, a cutting machine, a stacker or a winder, etc.;

( 2 ) The reduction box body is made of steel castings, the gears are made of alloy steel and processed by grinding teeth, each lubrication point in the box body adopts the forced lubrication method, and the lubricating oil is equipped with a high-efficiency water cooling system.

( 3 ) The screw material is made of 38CrMOA1A high-quality nitrided steel, which is treated with nitriding and sprayed with alloy on the surface.

( 4 ) The barrel material is made of 38CrMOA1A high-quality nitrided steel, which is treated with nitriding and sprayed with alloy on the surface.

( 5 ) The raw materials that can be processed are: PP, PE, PVC, PS, ABS, etc.;

( 6 ) This unit is mainly suitable for: the field of stationery (such as folders, etc.) the field of plastic products (such as plastic cups, plastic biscuit boxes, etc.) the field of advertising (such as billboards, etc.)

2. Horizontal three-roller twin-machine co-extrusion sheet production line:

( 1 ) The unit is mainly composed of main engine, screen changer, mold, three-layer distributor, tablet press, conveying table, tractor, cutting machine or rolling machine, etc.;

( 2 ) The reduction box is made of steel castings, the gears are made of alloy steel and processed by grinding. All lubrication points in the box are forced to be lubricated, and the lubricating oil is equipped with a high-efficiency water cooling system.

( 3 ) The screw material is made of 38CrMOA1A high-quality nitrided steel, which is treated with nitriding and sprayed with alloy on the surface.

( 4 ) The barrel material is made of 38CrMOA1A high-quality nitrided steel, which is treated by nitriding and sprayed with alloy on the surface.

( 5 ) The raw materials that can be processed are: PP, PE, PS, etc.

( 6 ) Hierarchical structure: AB, ABA.