SU919898A2

SU919898A2 - Gun for welding thermoplastic materials

Info

Publication number: SU919898A2
Application number: SU802907616A
Authority: SU
Inventors: Петр Тарасович Чеча; Николай Владимирович Масленников; Евгений Дмитриевич Кремлин
Original assignee: Проектный и научно-исследовательский институт "Донецкий ПромстройНИИпроект"
Priority date: 1980-03-05
Filing date: 1980-03-05
Publication date: 1982-04-15

Description

{5) ПИСТОЛЕТ ДЛЯ СВАРКИ ТЕРМОПЯАСТ08{5) GUN FOR WELDING THERMOPAAST08

II

Изобретение относитс к сварке пластмасс, а именно к устройствам дл сварки термопластов газообразным теплоносителем с использованием присадочного прутка.The invention relates to the welding of plastics, in particular to devices for welding thermoplastics with a gaseous heat carrier using a filler rod.

По основному авт. св. № 810508 известен пистолет дл сварки термопластов , содержащий корпус с распо ложенными в нем обогреваемыми кан алами дл подачи в зону сварки присадочного прутка и газообразного теплоносител , механизм подачи присадочного прутка, включающий электродвигатель , подающий и прижимной подпружиненный ролики, шовоформующую головку и расположенный в корпусе вентил тор , вал которого кинематически св зан с механизмом подачи присадочного прутка tП.According to the main author. St. No. 810508 is well-known gun for welding thermoplastics, comprising a housing with heated channels located therein for supplying a welding rod and a gaseous heat carrier to the welding zone, a filing rod feeding mechanism including a motor, supplying and pressing spring-loaded rollers, a roll-forming head and a valve located in the body torus, the shaft of which is kinematically connected with the feeder of the filler rod tP.

Недостатком этого пистолета вл ет то, что увеличиваетс нагрузка на электродвигатель механизма подачи прутка и он перегреваетс .The disadvantage of this gun is that the load on the bar feeder motor increases and it overheats.

Цель изобретени - обеспечение устойчивой работы электродвигател .The purpose of the invention is to ensure stable operation of the motor.

Указанна цель достигаетс тем, что пистолет дополнительно снабжен расположенным между вентил тором и электродвигателем механизмом дл направлени воздушного потока между обмотками статора электродвигатеп , выполненными в виде неподвижно установленной на валу последнего крыльto чатки, лопасти которой расположены против обмоток статора электродвигател , примем количество допастей рав; но числу обмоток статора.This goal is achieved by the fact that the gun is additionally equipped with a mechanism for directing the air flow between the stator windings of an electric motor arranged between the fan and the electric motor, made in the form of a fixed wing fixed to the shaft, the blades of which are located opposite the electric motor stator windings; but the number of stator windings.

Такое конструктивное выполнение Such constructive performance

15 пистолета обеспечивает, устойчивую работу электродвигател при длительной эксплуатации.15 pistol ensures stable operation of the electric motor during long-term operation.

На фиг. 1 изображен пистолет, общий вид-, на фиг. 2 - разрез А-А на FIG. 1 shows a pistol, a general view; FIG. 2 - section AA

20 фиг. 1;.на Фиг. 3 - разрез Б-Б на фиг. 2.20 of FIG. 1;. FIG. 3 shows a section BB in FIG. 2

Claims

A gun for welding thermoplastics contains a housing 1 inside which a channel k is heated by electric heaters 2 and 3 for melting the thermoplastic rod and channel 5 for heating a gaseous heat carrier. The body has a molding head 6 and a bar feed mechanism that includes a motor 7, a gear 8, on the output shaft 9 of which a feed roller 10 is installed and a spring-loaded | Q nip roller 11 mounted on the top hinged lid 12. On the rotor shaft 13, an impeller 1 is installed on the impeller fan 15. The electric motor and the fan are installed in a common housing 16. The blade wheel is driven by a belt drive 17. Between the stator 18 the electric motor and the paddle wheel ntil torus placed mechanism for directing air flow between the stator windings of the motor 18 configured in the form of fixedly mounted on the shaft of the last impeller 19, the blades 20 which are installed directly on the stator windings, wherein the number of vanes equals the number of windings. Through the transition duct 21, the outlet port 22 of the fan is communicated with channel 5. For ease of maintenance, the pistol is provided with a handle 23, on the KOTORA there is a 2k switch to turn off the electric motor. The gun works as follows. Channels i and 5 are heated to the required temperature by electric heaters 2 and 3. By turning on the toggle switch 2C, an electric motor 7 is put into operation, which through gearbox 8 begins to rotate the feed roller 10, and through a belt drive 17 the impeller 14 of the fan 15. Between the supply 10 and 11 rollers are injected with an additive rod, which, due to friction forces, is fed into channel A. Spatula wheel H through impeller 19. Gaps between: windings 9 8 of stator 18, exhaust port 22 and transition duct 21 inject air into channel 5 Methods and material and air are heated to a desired temperature and fed to the forming head 6. The hot air heats the edges to be welded, and then on this place in the weld zone is fed to a heated WKR-flowable state prisadochnyi rod. The presence of an impeller motor between the blade wheel of the fan and the stator allows the air flow to be directed directly into the gaps between the stator windings, thereby reducing the input resistance, which ensures the required performance of the fan while simultaneously cooling the ignitor. Such constructive execution of the gun for welding thermoplastics ensures the performance of high-quality welds without the use of an additional source of gas — the heat transfer medium. Claim 1 Inventory gun for welding thermoplastics auth.St. No. 810508, characterized in that, in order to ensure stable operation of the electric motor, the pistol is provided with a located one. between the fan and the motor, a mechanism for guiding the air flow between the stator windings of an electric motor, made in the form of the last impeller fixedly mounted on the yyl, whose blades are located opposite the electric motor stator windings, the number of blades being equal to the number of stator windings. Sources of information taken into account during the examination 1. USSR author's certificate No. 810508, cl. In 29 C 27/02, 1979 (prototype).