RU2057015C1 - Device for continuous production of polymeric films of laminated shock-absorbers - Google Patents

Abstract

FIELD: chemical engineering. SUBSTANCE: device for continuous production of polymeric films of laminated shock-absorbers is equipped with vacuum chamber mounted in internal cavity of molding cylinder. The vacuum chamber is in communication with forming jacks. Guide roller of smooth film is disposed behind pressure roll to ensure during the film unreeling its direction around pressure roll. Second infra-red heater is located above pressure roll surface. EFFECT: enhanced quality of reprocessing. 1 dwg

Description

 The invention relates to the processing of plastics and may find application in the chemical, food, glass, electronic and pharmaceutical industries.

 A device is known for the continuous production of layered shock absorbers from polymer films, including two films interconnected, one of which has molded depressions, containing unwinding devices, guide rollers for films, a forming cylinder with forming slots, infrared heaters for heating the films and a pressure roller for connecting films with molded recesses and a smooth film, the infrared heater for heating the forming film being located above the surface of the forming about the cylinder.

 However, the known device is distinguished by a large consumption of thermal energy for heating both films and the need to have the air required to form the cells. Compressed air is heated and exits through leaks and areas of film inlet and outlet on the forming cylinder, taking a large amount of heat to the surrounding space from the first heater. The second heater heats another film from the side opposite the welded side, therefore, to bring this film into a plastic state, the heater needs to bring more heat, since it is necessary to heat the entire mass of the film, and not its welded surface.

 The technical result of the invention is the reduction of heat loss.

 To this end, a device for the continuous production of layered shock absorbers from polymer films, including two films interconnected, one of which has molded recesses containing unwinding devices, guide rollers for films, a forming cylinder with forming slots, infrared heaters for heating the films and a pressure roller for the connection of the film with molded recesses and a smooth film, and an infrared heater for heating the formed film is located above the surface formatively about the cylinder, according to the invention is equipped with a vacuum chamber installed in the inner cavity of the forming cylinder, in communication with the forming sockets, and the guide roller of the smooth film is located behind the pressure roller to ensure, when the film is unwound, its direction around the pressure roller, while the second infrared heater is located above the surface of the pressure roller .

 The proposed device provides heating only the welded surface of a smooth film. The exclusion of compressed air to form the cells also reduces heat loss.

 The drawing shows the proposed device.

 A device for the continuous production of layered shock absorbers from polymer films comprises unwinding devices 1 and 2, guide rollers 3 for films, a forming cylinder 4 with forming slots (not shown), infrared heaters 5 and 6 for heating the films, and a pressure roller 7 for connecting the film to the formed recesses and smooth film. An infrared heater 5 for heating the forming film is located above the surface of the forming cylinder 4. In the inner cavity of the forming cylinder 4, a vacuum chamber 8 is connected with the forming nests. The guide roller 3 of the smooth film is located behind the pressure roller 7. The second infrared heater 6 is located above the surface of the pressure roller 7. The device also contains an additional roller 9 and a receiving device 10.

 The device operates as follows.

 One of the polymer films comes from the unwinding device 1 to the forming cylinder 4 and heats up when it passes under the infrared heater 5 to a plastic state. Under the action of the vacuum created in the vacuum chamber 8, this film is formed. The second polymer film comes from the unwinding device 2 and through an additional roller 9 is sent to the cylindrical surface of the pressure roller 7, where it is heated from an infrared heater 6 to a plastic state. The roller 9 provides passage under the heater 6 of that side of the film to be welded, increases the area of its heating, thereby increasing the efficiency of using the heat of the heater 6. When the forming cylinder 4 and the roller 7 are mutually rotated, both films are connected, forming a layered shock absorber entering the receiving device 10.

Claims (1)

 DEVICE FOR CONTINUOUS PRODUCTION OF POLYMERIC FILMS OF LAMINATED SHOCK ABSORBERS, including two films interconnected, one of which has formed recesses containing unwinding devices, guide rollers for films, a forming cylinder with forming nests, infrared heaters for heating films for connecting films and with formed recesses and a smooth film, and an infrared heater for heating the formed film is located above the surface of the forming c hindra, characterized in that the device is equipped with a vacuum chamber installed in the inner cavity of the forming cylinder in communication with the forming sockets, and a smooth film guide roller is located behind the pressure roller to ensure its direction around the pressure roller when the film is unwound, while the second infrared heater is located above the surface pressure roll.

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