Equipment for processing plastic bottle cap by extrusion compression molding

Abstract

Equipment for processing a plastic bottle cap by extrusion compression molding is characterized by comprising a stand, wherein an extrusion mechanism, a scraping and feeding mechanism, a compression molding cap producing mechanism, a demolding mechanism, a cutting ring mechanism and a heat-insulating and dehumidifying mechanism are arranged on the stand; the extrusion mechanism comprises a feeding hopper, a charging barrel and an extrusion port; a reinforced feeding screw is arranged in the feeding hopper; a scraping and capping mechanism comprises a scraping shaft; a scraping disk and a cap toggling disk are arranged on the scraping shaft; a scraping knife is arranged in the scraping disk and is matched with the extrusion port; a compression molding machine comprises a main shaft; a lower mold plate is arranged on the main shaft; an upper mold plate and an upper fixing plate are arranged on the lower mold plate; a lower mold is arranged in the lower mold plate; an upper mold and a push rod are arranged in the upper fixing plate; one side of the cap toggling disk is connected with a cap conveying slideaway; the other end of the cap conveying slideaway is connected with the cutting ring mechanism; a heat-insulating and dehumidifying system comprises an upper mold; a heat-insulating sleeve is arranged outside a cooling water pipe of the upper mold; an air cooler is arranged on the stand; and a blowing port of the air cooler is opposite to the compression molding cap producing mechanism.

Description

technical field [0001] The invention relates to a device for processing plastic bottle caps by extrusion molding, which is mainly used for producing bottle caps such as mineral water bottles and edible oil plastic bottles, and belongs to the field of plastic machinery. Background technique [0002] The equipment for producing bottle caps such as mineral water bottles and edible oil plastic bottles is mainly composed of a plastic extruder, a molding machine, and a scraping and feeding mechanism. Because the plastic bottle caps are small in size and light in weight, the feeding mechanism is extruded from the plastic every time. The amount of extruded material scraped by the extrusion port of the molding machine is relatively small, but the molding machine has many stations and the speed is fast. Therefore, it is required to feed the material evenly. The bottle cap is scrapped due to insufficient material, but the hopper of the existing plastic extruder has uneven feeding, and ...

AI Technical Summary

Problems solved by technology

[0002] The equipment for producing bottle caps such as mineral water bottles and edible oil plastic bottles is mainly composed of a plastic extruder, a molding machine, and a scraping and feeding mechanism. Because the plastic bottle caps are small in size and light in weight, the feeding mechanism is extruded from the plastic every time. The amount of extruded material scraped by the extrusion port of the molding machine is relatively small, but the molding machine has many stations and the speed is fast. Therefore, it is required to feed the material evenly. The bottle cap is scrapped due to insufficient material, but the hopper of the existing plastic extruder has uneven feeding, and there will be reverse material, and the extrusion port has the disadvantage of uneven extrusion. At the same time, the plastic extruder still has The heating energy loss of the barrel is large; when the scraper of the feeding mechanism scrapes the material from the extrusion port of the plastic extruder, whether the material can be completely pushed into the cavity of the mold of the molding machine is also related to the quality of the cap making One of the elements, but in the existing technology, the scraper only relies on blowing to remove the material on the scraper, lacking a mandatory mechanism, resulting in incomplete stripping; the molding machine has many stations, relying on the rotation and feeding mechanism In cooperation, the feeding mechanism also relies on rotation to scrape the material from the extrusion port and then send it into the mold cavity, so the scraper disc and the turntable of the molding machine must be synchronized. The existing equipment generally uses gear transmission, which has high energy consumption, loud noise, and synchronization accuracy. Low disadvantages; when molded into a plastic bottle cap product, the demoulding must be fast and completely removed. The existing technology only relies on mechanical demoulding to have disadvantages such as sticking to the mold; the plastic bottle cap is equipped with anti-theft teeth and anti-theft rings. When the anti-theft tooth is pulled off after the bottle cap is opened, the anti-theft ring is separated from the main bottle cap. When producing the bottle cap, it is necessary to use a ring cutting machine to cut a circle on the bottle cap to leave the anti-theft tooth. The existing technology cuts the ring and presses the cap. Unlike a machine, the molded bottle caps are put into the turnover box, and then transported to the side of the ring cutting machine, and the bottle caps are fed into the ring cutting machine by the conveying mechanism. Since the molded bottle caps have cooled to room temperature, they will , The bottle cap will be cut and collapsed when cutting the ring, so the ring cutting knife must be heated, which has the disadvantages of handling links, waste of artificial equipment and energy, and secondary pollution caused by the product; the location and season of producing plastic bottle caps are different. Different, the existing molding machine has no corresponding measures, and condensation will be formed in a large temperature difference and humid environment, and the dew will drip into the molding machine or the mold, causing the whole machine to be wet and the mold to be polluted

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