Positive-negative pressure self-cutting integral machine

Abstract

The invention belongs to the technical field of plastic sheet molding equipment, mainly relates to a positive-negative pressure self-cutting integral machine, and aims to solve the problems that in the prior art a great deal of equipment is used, a large field is needed, a great number of operators are needed, a prepared product is long in transferring process and the prepared product can be easily deformed and contaminated. The positive-negative pressure self-cutting integral machine comprises a rack, wherein the rack comprises a conveying beam which is arranged in the extension direction of the rack; a heating device, a molding device, a cutting device and a push device are sequentially arranged in the conveying direction of the conveying beam. By adopting the positive-negative pressure self-cutting integral machine, the space is saved, the labor is saved, the product transferring time is shortened, and a molded product is uniform in thickness and excellent in quality.

Description

technical field [0001] A self-cutting all-in-one machine belongs to the technical field of plastic sheet forming equipment, and mainly relates to a positive and negative pressure self-cutting all-in-one machine. Background technique [0002] Plastic packaging sheets are mainly used to produce thermoformed products such as disposable plastic cups, plates, bowls, plates, boxes, etc., and are widely used in the packaging of food, vegetables, fruits, beverages, dairy products, industrial parts, etc. With the increasing domestic demand, the use of packaging plastic thermoforming sheets is becoming more and more extensive, and the consumption is also increasing year by year. The prospect is promising. [0003] At present, most of the plastic sheet production equipment on the market is designed separately from the heating forming station and the cutting station. After the product is heated and formed, it is cut into a single semi-finished product together with the edge material, an...

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Problems solved by technology

[0003] At present, most of the plastic sheet production equipment on the market is designed separately from the heating forming station and the cutting station. After the product is heated and formed, it is cut into a single semi-finished product together with the edge material, and then to independent multiple cutting equipment. Cutting off leftovers on the machine, this process takes up a lot of equipment, a large space, a lot of personnel, and a long turnover process of finished products, which is easy to cause deformation and pollution of finished products, thus increasing the number of scrapped products;

[0004] At present, most of the similar products on the market adopt the cylinder to drive the upper and lower mold tables to form, and adopt the method of applying negative pressure to the mold to absorb the heated and softened plastic sheet to the mold. After forming, the product is cooled and shaped by external water spray and cold air. , the disadvantages of this method are: the shape of the product is limited, and the narrower shape is not easy to form; the product needs to be heated to a mature state, and the heating time is long and difficult to master; Strict requirements, easy to produce defective products; thicker products are difficult to form; there are generally many side materials, resulting in waste of materials, etc.;

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