SU1243955A1 - Device for ultrasonic welding of thermoplastic materials - Google Patents

Device for ultrasonic welding of thermoplastic materials Download PDF

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Publication number
SU1243955A1
SU1243955A1 SU843825487A SU3825487A SU1243955A1 SU 1243955 A1 SU1243955 A1 SU 1243955A1 SU 843825487 A SU843825487 A SU 843825487A SU 3825487 A SU3825487 A SU 3825487A SU 1243955 A1 SU1243955 A1 SU 1243955A1
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SU
USSR - Soviet Union
Prior art keywords
rollers
welding
welding head
coupled
angle
Prior art date
Application number
SU843825487A
Other languages
Russian (ru)
Inventor
Леонид Александрович Шестель
Раиса Федоровна Ермакова
Валерий Алексеевич Соколов
Владимир Петрович Крысько
Original Assignee
Омский политехнический институт
Украинский Научно-Исследовательский Институт Швейной Промышленности
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Priority to SU843825487A priority Critical patent/SU1243955A1/en
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Publication of SU1243955A1 publication Critical patent/SU1243955A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/086—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using a rotary anvil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8221—Scissor or lever mechanisms, i.e. involving a pivot point
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/845—C-clamp type or sewing machine type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • B29C66/93451—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed by controlling or regulating the rotational speed, i.e. the speed of revolution

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

1 one

Изобретение относитс  к сварке пластмасс,а именно к установкам дл  ультразвуковой сварки преимущественно пленочных термопластичных материалов , и может быть использовано на предпри ти х легкой и химической отраслей промышленности.The invention relates to the welding of plastics, in particular to installations for the ultrasonic welding of mainly film thermoplastic materials, and can be used in light industry and chemical industries.

Цель изобретени  - повьшение качества сварки криволинейных швов за счет устранени  сминани  и деформации материала в зоне шва и получени  фиксированных значений радиуса кривизны сварного шва.The purpose of the invention is to improve the quality of welding of curved seams by eliminating crushing and deformation of the material in the weld zone and obtaining fixed values of the radius of curvature of the weld.

I . I.

На фиг.1 изображена обща  схема .устройства, вид спередиJ на фиг.2 - то же, вид сбоку; на фиг.З - схема креплени  нат жного ролика; на фиг.4 - вид А на фиг.З; на фиг.З - конструкци  и схема согласующих роликов ..Fig. 1 shows a general scheme of the device, front view in Fig. 2 - the same, side view; FIG. 3 is a schematic of fastening the tensioning roller; FIG. 4 is a view A of FIG. 3; fig.Z - designs and scheme of matching rollers ..

Устройство дл  ультразвуковой сварки термопластичных материалов содержит смонтированные на станине 1 сварочную головку 2 с рабочим инструментом 3, .опорный ролик 4 и механизм транспортировани  свариваемого материала, включающий пару об- резиненных прот жных роликов 5 и пару прижимных роликов 6. Прот жные ролики 5 расположены симметрично относительно опорного ролика 4 со- осно ему. Прижимные ролики 6 св заны со сварочной головкой 2. Перед рабочим инструментом 3 в направлении перемещени  материала установлен нат жной ролик 7, выполненньй бочкообразной формы. Нат жной ро- .лик 7 закреплен на кронштейне 8 посредством подпружиненного рычага в виде коромысла 9 с возможностью поворота в вертикальной плоскости, перпендикул рной сварному шву. Кронштейн 8 св зан со сварочной головкой 2 и с прижимными роликами 6. Нат жной ролик 7 выполнен из эластичного материала. Длина коромысла 9 соответствует радиусу кривизны образующей бочкообразного нат жного ролика.A device for ultrasonic welding of thermoplastic materials contains a welding head 2 mounted on the base 1 with a working tool 3, a support roller 4 and a mechanism for transporting the material to be welded, including a pair of pressed rubber rollers 5 and a pair of pressure rollers 6. The rolling rollers 5 are arranged symmetrically with respect to the support roller 4, with it. The pressure rollers 6 are connected to the welding head 2. In front of the working tool 3, a tension roller 7 is installed in the direction of material movement, which is barrel-shaped. The tensioning roller 7 is fixed on the bracket 8 by means of a spring-loaded lever in the form of a yoke 9, which can be rotated in a vertical plane, perpendicular to the weld. The bracket 8 is associated with a welding head 2 and with pressure rollers 6. The tension roller 7 is made of an elastic material. The length of the rocker arm 9 corresponds to the radius of curvature of the generator of the barrel-shaped tensioning roller.

Пр.от жные ролики 5 механизма, транспортировани  снабжены индивидуальными приводами 10 и 11 и парой подпружиненных друг относительно друга пружиной 12 согласующих роликов 13. Согласующие ролики 13 свободно установлены на оси 14 с возможностью контакта с рабочей по439552The pivotal rollers 5 of the transport mechanism are equipped with individual drives 10 and 11 and a pair of spring 12 matching rollers 13 relative to each other. The matching rollers 13 are freely mounted on the axis 14 with the possibility of contact with the working Po 439552

верхностью прот жных роликов 5 и имеют между собой фрикционное эацеп- ление. Опорный ролик 4 свободно установлен на оси. Сварочна  головкаthe surface of the rolling rollers 5 and have a frictional engagement between them. The support roller 4 is freely mounted on the axis. Welding head

5 2 расположена под углом от О до 10 к вертикальной оси устройства в направлении расположени  нат жного ролика 7 с вершиной угла в точке пере- . сечени  вертикальной оси устройства5 2 is located at an angle from 0 to 10 to the vertical axis of the device in the direction of the location of the tension roller 7 with the apex of the angle at the point of section of the vertical axis of the device

9 и рабочей поверхно.сти опорного ролика 4. 9 and the working surface of the support roller 4.

Расположение сварочной головки 2 под указанным углом обеспечивает возможность создани  угла встречи,The location of the welding head 2 at the specified angle provides the possibility of creating a meeting angle,

5 при наличии которого создаютс  услови  дл  течени  вход щих в контакт между собой поверхностных слоев пленок и удалени  из зоны сварки загр знений и инородных включений. 5 in the presence of which conditions are created for the flow of the surface layers of the films that come in contact with each other and the removal of contaminants and foreign inclusions from the welding zone.

20 Устройство работает следующим образом .20 The device operates as follows.

При включении ультразвуковых колебаний сварочной головки и электричес25 кой схемы (не показано) приводом механизма транспортировани  свари- ваемьй материал., помещенный в зазор между опорным и прот жными роликами с одной стороны и инструментом и при30 жимньгми роликами с другой стороны, начинает перемещатьс  вдоль рабочей поверхности инструмента, разогреваетс  энергией ультразвуковых колебаний и свариваетс . При этом ра сполоWhen the ultrasonic vibrations of the welding head and the electrical circuit (not shown) are activated by the drive of the transport mechanism, the welding material, placed into the gap between the support and extension rollers on one side and the tool and the near-press rollers on the other side, begins to move along the working surface the tool is heated by the energy of the ultrasonic vibrations and is welded. In this case, pa

женныи впереди инструмента по ходуwife ahead of the tool along the way

транспортировани  материала подпружиненный нат жной ролик о казьшает распр мл ющее и раст гивающее.действие на материал, вход щий в зазор между инструментом и опорным роликом за счет взаимодействи  через свариваемый материал с парами прот жных и прижимных роликов.The material is transported by a spring-loaded tensioning roller that indicates a spreading and stretching effect on the material entering the gap between the tool and the support roller due to interaction through the material being welded with pairs of extension and pressure rollers.

При подаче одинакового напр жени  на приводы прот жных роликов проис- ходит сварка пр молинейных швов, при зтом согласующие ролики, прижатые друг к другу действием пружины сглаживают отклонени  напр женийWhen the same voltage is applied to the drives of the sliding rollers, the welding of the straight seams takes place, at the same time, the matching rollers pressed against each other by the action of the spring smooth out the voltage deviations

отдельных приводов или сопротивлений их кинематической части. При взаимном изменении напр жений, с достижением уровн  рассогласовани , при котором преодолеваетс  фрикционна individual drives or resistances of their kinematic part. With the mutual change of stresses, with the achievement of the level of mismatch, at which the friction

св зь между согласующими роликами, один из прот жных роликов, получив большую скорость, начинает поворачивать свариваемый материал,причемthe connection between the matching rollers, one of the sliding rollers, having a high speed, begins to rotate the material being welded, and

312439554312439554

нат жной ролик, следу  за сваривав- нат жению материала впереди инстру- мьп. материалом отклон етс  от вер- мента. Таким образом, производитс  тикальной оси,сохран  .способность к сварка криволинейных швов.tension roller, followed by welding the material in front of the tool. material deviates from the vertex. Thus, a ticking axis is produced, which preserves the ability to weld curved seams.

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фиг.1figure 1

фиг. 2FIG. 2

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фаг.Зphage.Z

фиг Аfig a

Составитель Н. Елисеева Редактор И. Сегл ник Техред Н.Бонкало Корректор Compiled by N. Eliseeva Editor I. Segl nik Tehred N. Bonkalo Proofreader

Заказ 3753/16 Тираж 640Подписное .Order 3753/16 Circulation 640 Subscription.

БНИИПИ Государственного комитета СССРBNIIPI USSR State Committee

по делам изобретений и открытий 113035, Москва, Ж-35, Раушска  наб., д. 4/5for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

. Производственно-полиграфическое предпри тие, г. Ужгород, ул. Проектна ,4. Production and printing company, Uzhgorod, st. Project, 4

фиг. 5FIG. five

Claims (4)

1. УСТРОЙСТВО ДЛЯ УЛЬТРАЗВУКОВОЙ СВАРКИ ТЕРМОПЛАСТИЧНЫХ МАТЕРИАЛОВ, содержащее смонтированные на станине сварочную головку с рабочим инструментом, установленный на оси опорный ролик и механизм транспортирования свариваемого материала, включающий расположенные симметрично относительно опорного ролика и соосно с ним пару обрезиненных протяжных роликов и пару связанных со сварочно.й» головкой прижимных роликов, отличающееся тем, что, с целью повышения качества сварки криволинейных швов за счет устранения сминания и деформации материала в зоне шва и получения фиксированных значений радиуса кривизны сварного шва, устройство снабжено расположенным пе- ред рабочим инструментом в направлении перемещения материала натяжным роликом, выполненным бочкообразной формы и смонтированным на сварочной' головке с возможностью поворота в вертикальной плоскости, а протяжные ролики механизма транспортирования снабжены индивидуальными приводами и парой подпружиненных друг относительно друга согласующих роликов, свободно установленных на оси с возможностью контакта с рабочей поверхностью протяжных роликов, причем опорный ролик свободно установлен на оси, а сварочная головка рас- β положена под углом к вертикальной 1S оси устройства.1. DEVICE FOR ULTRASONIC WELDING OF THERMOPLASTIC MATERIALS, comprising a welding head mounted on a bed with a working tool, an support roller mounted on the axis and a mechanism for transporting the welded material, including a pair of rubberized coupled coupled rubber-coated coupled splices and coaxially coupled to it and connected with it to the welding rollers. th ”by the head of the pressure rollers, characterized in that, in order to improve the quality of welding of curved seams by eliminating creasing and deformation of the material and in the weld zone and obtaining fixed values of the radius of curvature of the weld, the device is equipped with a tension roller located in front of the working tool in the direction of movement of the material, made in a barrel-shaped shape and mounted on the welding head with the possibility of rotation in the vertical plane, and the transport mechanism’s broaching rollers are provided individual drives and a pair of matching rollers spring-loaded relative to each other, freely mounted on the axis with the possibility of contact with the working surface rhnostyu pinch rolls, the support roller is freely mounted on the shaft, and welding head distribution laid at an angle β to the vertical axis of the device 1S. 2. Устройство по п.1, о т л и- чающееся тем, что натяжной ролик смонтирован на сварочной головке посредством подпружиненного рычага .2. The device according to claim 1, wherein the tension roller is mounted on the welding head by means of a spring-loaded lever. 3. Устройство по п.1, о т л ичающееся тем, что согласующие ролики имеют между собой фрикционное зацепление.3. The device according to claim 1, wherein the matching rollers have friction engagement between themselves. 4. Устройство по п.1, отличающееся тем, что сварочная головка расположена под углом 0-13° к вертикальной оси устройства в направлении расположения натяжного ролика с вершиной угла в точке пересечения вертикальной оси устройства и рабочей поверхности опорного ролика .4. The device according to claim 1, characterized in that the welding head is located at an angle of 0-13 ° to the vertical axis of the device in the direction of the location of the tension roller with the apex of the angle at the intersection of the vertical axis of the device and the working surface of the support roller. SU 1243955 А1SU 1243955 A1 1 243'9551 243'955
SU843825487A 1984-12-17 1984-12-17 Device for ultrasonic welding of thermoplastic materials SU1243955A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006029835A1 (en) * 2004-09-14 2006-03-23 Jentschmann Ag Zürich A welding device
WO2009019723A1 (en) * 2007-08-03 2009-02-12 S.M.R.E. Engineering Di Mazzini S.& C. S.N.C. Device for ultrasonic welding, in particular of layered elements

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Волков С.С. и др. Сварка пластмасс ультразвуком. М.: Хими , 1974, с. 200. Клеткин И.Д. и др. Ультразвукова сварка пр изготовлении одежды. М.: Легка индустри , 1979, с. 20-22. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006029835A1 (en) * 2004-09-14 2006-03-23 Jentschmann Ag Zürich A welding device
WO2009019723A1 (en) * 2007-08-03 2009-02-12 S.M.R.E. Engineering Di Mazzini S.& C. S.N.C. Device for ultrasonic welding, in particular of layered elements

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