The lifting and lowering of the refrigerator production line before the forming mold is completed by hydraulic jacking. Due to the hydraulic jacking mechanism, the operating speed is controlled by adjusting the ratio, which is monitored and adjusted in the console, so when the running time is long or the room temperature in winter When it is low, it is easy to cause unstable oil pressure due to the influence of the oil temperature of the hydraulic station, which also has a certain impact on the production environment; the refrigerator production line has no problem with the general shape of the gasket during production, but it is often critical for the gasket with complex shape. The forming of the part is not good. Above the vacuum forming liner, the pressure of a forming box is increased, which greatly improves the forming ability; using upper fan cooling, due to the high ambient temperature in the forming area, the cooling speed is slow, and the cooling time needs to be prolonged. The production beat. These are caused by obsolete equipment.

The vacuum forming type trimming blanking in the refrigerator production line is another kind of equipment that needs to be completed manually. The equipment is quite old, the workers put the refrigerator in a good position to cut the edges, and the resulting waste is subsequently recycled.

Manufacture of insulation layer of refrigerator production line

The foaming process is mainly completed at the mouth of the tube end. The polyurethane foaming agent is used in the space between the storage device and the refrigerator housing. Polyurethane foaming agent is added to the injection molding of thermal insulation products to play a role in thermal insulation.

According to the workshop manager, raw materials such as cyclopentane and propane are relatively cheap, and they are easily available in refrigerator production lines and in industry and laboratories. Therefore, it is an ideal foaming agent that turns liquids into solids and can protect against shocks and heat preservation. effect.

Since hydraulic jacking controls the operating speed of the flow by adjusting the proportional valve, when the operating time is long or the room temperature is low in winter, the oil pressure of the hydraulic station will be affected by the oil temperature, which will easily cause the oil pressure to be unstable, and the mold top speed will be different. The degree of impact also has a certain impact on the production environment; the vacuum forming of the adsorption machine adopts a single vacuum adsorption molding system method, which is no problem for the general shape of the balloon, but for the complex shape of the spherical tank, the key parts are not well formed. A large number of pressure empty boxes are often added to the top of the vacuum-formed spherical tank, and the pressure-formed spherical tank is formed by adsorption in a vacuum. The sheet is vacuum adsorbed under the mold, so that the sheet is quickly formed, which greatly enhances the forming ability; After forming, use the upper 6 fans to blow in cooling air to extend the cooling time and prolong the production cycle. These are caused by obsolete equipment.

The trimming and blanking of the vacuum forming class are additional equipment that is manually operated. The equipment is quite old, the workers put the refrigerator in a good position to cut the edges, and the resulting waste is subsequently recycled.

Manufacture of insulation layer of refrigerator production line

The foaming process is mainly completed at the end of the nozzle. In the gap between the refrigerator storage device and the outer shell, polyurethane and thermal insulation products are used to add foaming agent during injection molding to achieve thermal insulation. In the polyurethane industry, it is only used as a blowing agent for rigid polyurethane foam. Its main components are: cyclopentane, isobutane and so on.