SU727472A1

SU727472A1 - Apparatus for welding polymeric tubes

Info

Publication number: SU727472A1
Application number: SU782583849A
Authority: SU
Inventors: Владимир Алексеевич Коновалов; Борис Федорович Виндт; Конкордий Иванович Зайцев; Анатолий Васильевич Чибиков; Сергей Николаевич Фуражкин; Владислав Николаевич Максименко
Original assignee: Всесоюзный научно-исследовательский институт по строительству магистральных трубопроводов
Priority date: 1978-02-22
Filing date: 1978-02-22
Publication date: 1980-04-15

Description

Изобретение относится к области сварки пластмасс, а именно к устройствам для контактной сварки труб из полимерных материалов. gThe invention relates to the field of welding of plastics, and in particular to devices for resistance welding of pipes made of polymeric materials. g

Известно устройство для сварки труб из полимерных материалов, содержащее смонтированный на рычагах зажимные хомуты, динамометр и узел сближения рычагов, выполненный в вид<= поворотного вала с рукояткой, на которой закреплен фиксатор, и свободно установленной на упомянутом валу червячной шестерни, взаимодействующей с фиксатором [1].A device is known for welding pipes made of polymeric materials, comprising clamping clamps mounted on levers, a dynamometer and a lever convergence unit, made in the form <= of a rotary shaft with a handle on which a clamp is fixed, and a worm gear freely interacting with said clamp [ 1].

Недостатком устройства является ’* неточная центровка свариваемых труб из-за расположения хомутов на общих направляющих, что не позволяет перемещать торцы труб относительно друг __п.друга в плоскости стыка. . ⁰ A disadvantage of the device is' * inaccurate centering of welded tubes because of the location of collars on common guides, which prevents pipe ends move relative to each _ _n .Other in the joint plane. . ⁰

Наиболее близким к изобретенйю . по технической сущности является устройство для сварки труб из полимер-, ных материалов, содержащее подвижный и неподвижный зажимные хомуты и узел сближения труб в виде гидроцилиндров [2] .Closest to invention. in technical essence, it is a device for welding pipes made of polymer materials, containing movable and fixed clamping clamps and a unit for converging pipes in the form of hydraulic cylinders [2].

Недостаток указанного устройства заключается в том, 'что оно не позво- 30 пяет перемещать торцы соединяемых труб относительно друг друга в плоскости стыка из-за расположения зажимных хомутов на ; жестко соединенных . между собой горизонтальных штангах, что не обеспечивает точную центровку труб. Качество сварки при этом снижается. ·The disadvantage of this device is' that it does not allow 30 to move the ends of the pipes to be connected relative to each other in the joint plane due to the location of the clamping clamps on; rigidly connected. between each other horizontal rods, which does not provide accurate alignment of the pipes. The quality of welding is reduced. ·

Целью изобретения является повышение качества сварки за счет точного центрирования труб.The aim of the invention is to improve the quality of welding due to the exact alignment of the pipes.

Указанная цель достигается тем, что устройство для сварки труб из полимерных материалов, содержащее подвижный и неподвижный зажимные хомуты, состоящие из полухомутов, и узел сближения труб в виде/ гидроцилйндров, снабжено размещенными на концах одного из полухомутов подвижного хомута направляющими с установленными в них , планками с отверстиями и эксцентриками, расположенными в отверстиях Планок, а гидроцилиндры жестко закреплены на одном из полухомутов неподвижного хомута} причем штоки гидроцилиндров соединены с планками. Полухомуты каждого из хомутов соединены друг с другом посредством установленных с возможностью поворота на концах одного из полухомутов втулок, на которых при помощи винтовой пары подвижно установлены концы другого полухомута. Один из полухомутов каждого хомута выполнен составным из двух соединенных друг с другом пальцами частей.This goal is achieved by the fact that the device for welding pipes made of polymeric materials containing movable and fixed clamping clamps, consisting of half clamps, and the unit for converging pipes in the form of / hydraulic cylinders, is equipped with rails placed on the ends of one of the half clamps of the movable clamp with straps installed in them with holes and eccentrics located in the holes of the Planck, and the hydraulic cylinders are rigidly fixed to one of the half-clips of a fixed clamp} and the rod of the hydraulic cylinders are connected to the strips. The half-clamps of each of the clamps are connected to each other by means of sleeves mounted rotatably at the ends of one of the half-clamps, on which the ends of the other half-clamp are movably mounted using a screw pair. One of the half-clamps of each clamp is made of two parts connected to each other by fingers.

Такое выполнение устройства обеспечивает точное центрирование соединяемых труб за счет чего повышается качество сварки.This embodiment of the device provides accurate centering of the connected pipes, thereby improving the quality of welding.

На фиг. 1 изображен общий вид устройства; на фиг. 2 — вид А на фиг. 1.In FIG. 1 shows a General view of the device; in FIG. 2 is a view A in FIG. 1.

Устройство для сварки труб из полимерных материалов содержит хомуты и 2 для зажима труб, которые выполнены из верхних 3 и нижних 4 полухомутов. Нижние полухомуты 4 выполнены составными из двух частей Биб, установленных подвижно при помощи винтовой пары 7 на втулках 8. Втулки 8 установлены с возможностью поворота на верхних полухомутах 3 хомутов 1 и 2 симметрично и диаметрально противоположно относительно продольной оси устройства.A device for welding pipes from polymeric materials contains clamps and 2 for clamping pipes, which are made of the upper 3 and lower 4 half-clamps. The lower half-clamps 4 are made of two parts of the Bib mounted movably with a screw pair 7 on the bushings 8. The bushings 8 are mounted to rotate on the upper half-clamps 3 of the clamps 1 and 2 symmetrically and diametrically opposite to the longitudinal axis of the device.

Верхний полухомут 3 хомута 1 снабжен расположенными симметрично относительно втулок 8 вертикальными направляющими 9, в которых размещены планки 10. В планках 10 имеются отверстия с установленными в них эксцентриками 11, снабженными рукоятками 12. Оси вращения 13 эксцентриков 11 расположены в верхнем полухомуте 3.The upper half-clamp 3 of the clamp 1 is equipped with vertical guides 9 arranged symmetrically relative to the bushings 8, in which the straps are placed 10. The straps 10 have holes with eccentrics 11 installed in them, equipped with handles 12. The axis of rotation 13 of the clowns 11 are located in the upper half-clamp 3.

На верхнем полухомуте 3 хомута жестко закреплены соосно втулкам 8 два гидроцилиндра 14, на штоках 15 которых установлены планки 10. Части 5 и 6 полухомутов 4 соединены посредством пальца 16. Устройство содержит также опоры 17 для труб.On the upper half-clamp 3 clamps are rigidly coaxial to the bushings 8 two hydraulic cylinders 14, on the rods 15 of which the straps are installed 10. Parts 5 and 6 of the half-clamps 4 are connected by means of the pin 16. The device also contains supports 17 for pipes.

Устройство работает следующим образом.The device operates as follows.

В исходном положении части 5 и б полухомутов 4 разведены. Устройство насаживается на предварительно сцентрированные и уложенные на опоры 17 трубы 18 и 19 таким образом, чтобы стык находился между хомутами 1 и 2. Части 5 и 6 сводят и соединяют пальцем 16. Вращая равномерно винты винтовых пар 7, перемещают вверх части 5 и 6 относительно втулок 8, тем самым осуществляется зажим труб 18 и 19 в хомутах 1 и 2. При этом торцы труб 18 и 19 в нижней части стыка будут сцентрированы недостаточно точно, если разница в диаметрах стыкуемых труб очень велика, торец трубы большего диаметра, например трубы 19, будет смещен вниз относительно торца трубы 18.In the initial position, parts 5 and b of the half clamps 4 are divorced. The device is mounted on the pipes 18 and 19 pre-centered and laid on the supports 17 so that the joint is between the clamps 1 and 2. Parts 5 and 6 are brought together and connected by the finger 16. Rotating the screws of the screw pairs 7 evenly, move parts 5 and 6 relatively sleeves 8, thereby clamping the pipes 18 and 19 in the clamps 1 and 2. In this case, the ends of the pipes 18 and 19 in the lower part of the joint will not be centered accurately, if the difference in diameters of the joined pipes is very large, the end face of a pipe with a larger diameter, for example, pipe 19 will be shifted down relative the end of the pipe 18.

Для достижения более качественного 60 центрирования поднимают хомут Г относительно хомута 2 на величину, равную половине смещения торцов, что достигается равномерным вращением эксцентриков 11 (перемещение ру- 65 коятки 12 вверх). При этом эксцентрики 11 поворачиваются в отверстиях планок 10, а оси вращения 13 эксцентриков 11 увлекают за собой хомут 1, который перемещается только вверх г (при перемещении рукоятки 12 вверх) относительно планок 10, установленных в вертикальных направляющих 9, а так как планки 10 смонтированы на штоке 15 гидроцилиндра '.4, жестко IQ установленного на хомуте 2, то хомут поднимается вмес*ге с трубой 19 относительно хомута 2 и зажатой в нем трубы 18.To achieve a better centering 60, raise the clamp Г relative to the clamp 2 by an amount equal to half the displacement of the ends, which is achieved by uniform rotation of the eccentrics 11 (moving the handle 65 of the handle 12 upwards). In this case, the eccentrics 11 rotate in the holes of the strips 10, and the axis of rotation 13 of the eccentrics 11 carry the clamp 1, which moves only up g (when moving the handle 12 up) relative to the strips 10 installed in the vertical guides 9, and since the strips 10 are mounted on the rod 15 of the hydraulic cylinder '.4, rigidly IQ mounted on the clamp 2, the clamp rises along with the pipe 19 relative to the clamp 2 and the pipe 18 clamped in it.

Если труба большего диаметра будет установлена в хомуте 2, боЛее точная центровка достигается перемещением рукоятки 12 вниз.If a larger pipe is installed in the clamp 2, more accurate alignment is achieved by moving the handle 12 down.

После окончательной центровки производится сварка труб 18 и 19 известным способом. При этом необходимые перемещения труб относительно продольной оси устройства и необходимые усилия создаются гидроцилиндрами 14. По окончании процесса сварки хомуты 1 и 2 разжимают, устройство пе- .· ремещают к следующему стыку.After the final alignment, the pipes 18 and 19 are welded in a known manner. In this case, the necessary movement of the pipes relative to the longitudinal axis of the device and the necessary efforts are created by the hydraulic cylinders 14. At the end of the welding process, the clamps 1 and 2 are opened, the device is transferred. · Move to the next joint.

Устройство согласно изобретению обеспечивает Точное и быстрое центрирование торцов соединяемых труб за счет чего повышается качество и скорость сварки.The device according to the invention provides accurate and quick centering of the ends of the pipes to be connected, thereby increasing the quality and speed of welding.

Claims

The invention relates to the field of welding plastics, namely to devices for contact; 1st welding of pipes made of polymeric materials. A device for welding pipes made of polymeric materials, comprising clamping clamps mounted on levers, a dynamometer and a lever lever assembly, made in the form of a rotary shaft with a handle on which a retainer is attached, and freely mounted on the shaft of an black gear that interacts with a clamp 1. A disadvantage of the device is the inaccurate centering of the pipes being welded due to the location of the clamps on the common guides, which does not allow to move the ends of the pipes relative to each other in the plane of the joint. The closest to the invention to the technical essence is a device for welding of pipes from polymer. materials containing movable and stationary clamping clamps and a unit for the approach of pipes in the form of hydraulic cylinders 2. The disadvantage of this device is that it does not allow the ends of the connected pipes to be moved relative to each other in a plane. the bones of the junction due to the location of the 4 clips on the back; rigidly connected. between each horizontal rod that does not provide accurate centering of pipes. Welding quality is reduced. . The aim of the invention is to improve the quality of welding due to precise centering of the pipes. This goal is achieved by the fact that a device for welding pipes from polymeric materials, containing movable and fixed clamping clamps consisting of half shafts, and a knot for bringing together pipes in the form | hydraulic cylinders are fitted with guides with mounted in them at the ends of one of the semi-collars of the movable yoke, straps with holes and eccentrics located in the holes of the planks, and the hydraulic cylinders are rigidly fixed on one of the sleeves of the fixed clamp with the hydraulic cylinders connected to the planks. The half clamps of each of the clamps are connected to each other installed with the possibility of rotation at the ends of one of the half sleeves of the sleeves. on which, with the help of a pair of screws, set the ends of the other bent yoke. One of the half-sleeves of each yoke is made of composite parts with two fingers connected to each other. Such an embodiment of the device provides an accurate centering of the connected pipes, thereby improving the quality of welding. FIG. 1 shows a general view of the device; Fig. 2 is a view A of Fig. 1; A device for welding pipes of dimensional materials comprises clamps 1 and 2 for clamping pipes which are made from the top 3 and bottom 4 hems. The lower half-sleeves 4 are made of two parts 5 and b, which are movably mounted with the aid of a screw pair 7 on the sleeves 8, the sleeves 8 are installed rotatably on the upper half-sleeves 3 clamps 1 and 2 symmetrically and diametrically opposite to the longitudinal axis of the device. Upper semi-yoke 3 yokes 1 are provided with vertical guides 9 arranged symmetrically relative to the sleeves 8, in which the laths 10 are placed. In the yokes 10 there are holes with centered 11 mounted on them, provided with handles 12 Axes of rotation 13 eccentric 11 placed in upper semi-slide 3, On the upper half-clamp 3, the collar 2 is rigidly fixed coaxially to the sleeves 8 two hydraulic cylinders 14, on the rods 15 of which strips 10 are installed. Parts 5 and 6 of the half-sleeves 4 are connected by means of a finger 16. The device also contains pipe supports 17. The device works as follows. In the initial position, parts 5 and 6 of semi-cranks 4 are divorced. The device is mounted on pre-centered and laid on the supports 17 pipes 18 and 19 so that the joint is between clamps 1 and 2. Parts 5 and 6 are brought together and connected with a finger 16, rotating the screws of the screw pairs 7 evenly, move the parts upwards. 5 and b relative to the sleeves 8, the caMbDvi clamping pipes 18 and 19 in clamps 1 and 2, while the ends of the pipes 18 and 19 in the lower part of the junction will not be centered sufficiently accurately, if the difference in diameters of the joined pipes is very large, the end of the pipe larger diameter, such as pipe 19, will be shifted downward relatively end of the pipe 18, in order to achieve better centering, raise the collar G relatively the collar 2 by an amount equal to half the displacement of the ends, which is achieved by uniform rotation of the eccentrics 11 (moving the handle 12 upwards). At the same time, the eccentrics 11 rotate in the holes of the slats 10, and the axes of rotation 13 of the eccentrics 11 carry the yoke 1, which moves only upwards (when the handle 12 is moved upwards) relative to the slats 10 installed in the vertical guides 9, along with the slats 10 are mounted on the rod 15 of the hydraulic cylinder .14 fixed on the collar 2, the collar 1 rises together with the pipe 19 relative to the collar 2 and the pipe 18 clamped in it. If the larger diameter pipe is installed in the collar 2, more accurate centering is achieved by moving handles 12 down. After the final alignment, the pipes 18 and 19 are welded in a known manner. The required movements of the pipes relative to the longitudinal axis of the device and the necessary forces are created by hydraulic cylinders 14. At the end of the welding process, the clamps 1 and 2 are unclenched, the device is moved to the next joint. The device according to the invention provides an accurate and rapid centering of the ends of the pipes to be joined, thereby improving the quality and speed of welding. Claim 1. Device for welding pipes made of polymeric materials, containing movable and fixed clamping clamps consisting of half-sleeves, and a unit for drawing pipes in the form of hydraulic cylinders, in order to improve the quality of welding due to precise centering of pipes, the device is equipped with guides with strips with holes and eccentrics located in the holes of the slats installed at the ends of one of the semi-collars of the movable yoke, and the hydraulic cylinders are rigidly fixed on one of the uhomutov stationary yoke, wherein the rods of the hydraulic cylinders are connected to the slats.

2. Device PO.P.1, with tl and ayu1eses that the half-sleeves of each of the clamps are connected to each other by means of installed sleeves on the ends of the bottom of the half-sleeves of plugs, which are at. the help of the SCREW pair is fitted with the ends of the other half-muta.