DE4241974C1 - Simple welding appts. for use with thermoplastic film - has drive for vertical screw spindle whose ends are oppositely threaded so as to bring together or separate welding and backing blades - Google Patents

Simple welding appts. for use with thermoplastic film - has drive for vertical screw spindle whose ends are oppositely threaded so as to bring together or separate welding and backing blades

Info

Publication number
DE4241974C1
DE4241974C1 DE19924241974 DE4241974A DE4241974C1 DE 4241974 C1 DE4241974 C1 DE 4241974C1 DE 19924241974 DE19924241974 DE 19924241974 DE 4241974 A DE4241974 A DE 4241974A DE 4241974 C1 DE4241974 C1 DE 4241974C1
Authority
DE
Germany
Prior art keywords
welding
welding bar
motor
bar
drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE19924241974
Other languages
German (de)
Inventor
Hans-Georg Berghammer
Frank Pannier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lemo Maschinenbau GmbH
Original Assignee
Lemo Maschinenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lemo Maschinenbau GmbH filed Critical Lemo Maschinenbau GmbH
Priority to DE19924241974 priority Critical patent/DE4241974C1/en
Application granted granted Critical
Publication of DE4241974C1 publication Critical patent/DE4241974C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822—Transmission mechanisms
    • B29C66/8223—Worm or spindle mechanisms
    • 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
    • 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
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • 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
    • B29C66/814—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 design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81417—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 design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled being V-shaped
    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • 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
    • B29C66/851—Bag or container making machines
    • B29C66/8511—Bag making machines
    • 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
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • 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
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • B29C66/9292—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges in explicit relation to another variable, e.g. pressure diagrams
    • B29C66/92921—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges in explicit relation to another variable, e.g. pressure diagrams in specific relation to time, e.g. pressure-time diagrams
    • 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
    • B29C66/93441—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed the speed being non-constant over time
    • 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
    • B29C66/939—Measuring or controlling the joining process by measuring or controlling the speed characterised by specific speed values or ranges
    • B29C66/9392—Measuring or controlling the joining process by measuring or controlling the speed characterised by specific speed values or ranges in explicit relation to another variable, e.g. speed diagrams
    • 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
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • 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
    • B29C66/824—Actuating mechanisms
    • B29C66/8246—Servomechanisms, e.g. servomotors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets

Landscapes

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

Abstract

A device controls the welding tools in equipment for welding film, particularly in the production of bags etc. from thermoplastic sheeting. It has at least one motor-driven reciprocating welding blade and a backing which operates in conjunction with it, plus a control device for the drive, the transmission of which is a screw. Pref. the film (1) is fed in by traction rollers (2). The top welding blade (4) moves vertically to meet and move from the similarly moved backing blade (5). The motor used (7) drives a screw (8) and its spindle (9) which is parallel to the welding movements. The ends of this spindle (9) are threaded in opposite directions (11, 12). These threads (11, 12) hold plates (13, 14) with their guide rods (15, 16) in their bearings (17). The rods (15, 16) hold the welding/backing blades (4, 5). Both the motor mentioned (7) and a second motor (7') are servo or stepped types synchronised by an electronic control (19). ADVANTAGE - The system is simple. It minimises high inertia parts. Consequently it has a relatively high efficiency and its welding pressure can be adjusted extremely finely.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Steuerung von Schweißwerkzeugen an Folienschweißmaschinen, insbesondere bei der Herstellung von Beuteln, Säcken oder dgl. aus thermoplastischen Kunststoffolienbahnen, mit wenigstens einem von einem Servomotor und einem damit verbundenen Antriebsübertragungsorgan hin und her gehend angetriebenen Schweißbalken und einem damit zusammenwirkenden Gegenschweißbalken sowie einer Steuereinrichtung für den Antrieb.The invention relates to a device for controlling welding tools on film welding machines, especially in the production of Bags, sacks or the like made of thermoplastic plastic sheeting, with at least one of a servo motor and an associated drive transmission member back and forth driven welding bar and one counter-welding bar interacting therewith and a control device for the drive.

Eine Vorrichtung der eingangs genannten Art ist aus der DE-A1 39 31 967 bekannt. Dort ist zum Antrieb des verstellbaren Schweißbalkens ein um 360° umlaufender Kurbeltrieb vorgesehen, dessen Servomotor so geschaltet werden kann, daß der Schweißbalken gegebenenfalls mit gewünschter Beschleunigung oder Verzögerung angetrieben wird. Die Verstellbewegung des Schweißbalkens entspricht einem entsprechenden ersten Anteil des Drehwinkels des Kurbeltriebs, während der restliche Drehwinkel bis zur Erlangung der vollen Umdrehung entsprechend der aktuellen Drehzahl durchlaufen wird. Dieser kontinuierliche bzw. asymmetrische Schweißbalkenantrieb jeweils über eine volle Umdrehung in Verbindung mit der vergleichsweise hohen trägen Masse des Antriebsübertragungsorgans stellt keine optimale Ausnutzung der Maschinenleistung dar. Außerdem ist eine Anpassung an unterschiedliche Materialien für die Kunststoffbahn und eine variable Einstellung des Schweißbalkens lediglich auf mechanischem Wege möglich. Es ist somit bei einer ansonsten weitgehend automatischen Folienschweißmaschine eine äußerst umständliche und zeitaufwendige Anpassung erforderlich.A device of the type mentioned is from DE-A1 39 31 967 known. There is a 360 ° drive for the adjustable welding bar revolving crank mechanism provided, the servo motor are switched so can that the welding bar, if necessary, with the desired acceleration or Delay is driven. The adjustment movement of the welding bar corresponds to a corresponding first part of the angle of rotation of the Crank drive while the remaining angle of rotation until attaining full Revolution corresponding to the current speed. This continuous or asymmetrical welding beam drive each via one full rotation in connection with the comparatively high inertial mass of the Drive transmission member does not make optimal use of machine performance  is also an adaptation to different materials for the plastic sheet and a variable adjustment of the welding bar only possible mechanically. It is thus largely at an otherwise automatic film sealing machine an extremely cumbersome and time-consuming Adjustment required.

Wesentlich günstigere Bedingungen weist eine Vorrichtung nach einem älteren Vorschlag der Anmelderin (deutsche Patentanmeldung P 42 22 552) auf, da dort der Kurbeltrieb als Reversierantrieb ausgebildet ist. Dadurch kommt man aufgrund der geringeren zurückzulegenden Wege des Antriebsübertragungsorgans zu einer bedeutenden Leistungssteigerung der Schweißmaschine. Außerdem läßt sich der Schweißdruck einfacher und exakter einstellen.A device according to an older one has significantly more favorable conditions Proposal by the applicant (German patent application P 42 22 552) because there the crank mechanism is designed as a reversing drive. This is how you come due to the reduced travel of the drive transmission member to a significant increase in performance of the welding machine. Also lets the welding pressure is easier and more precise.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, mittels der mit besonders einfachen Maßnahmen eine noch weitergehende Reduzierung der trägen Massen des oder der Antriebsübertragungsorgane und damit bei vergleichsweise hoher Maschinenleistung eine äußerst feinfühlige Einstellung des Schweißdrucks gewährleistet wird.The invention has for its object a device of the beginning to create the type mentioned by means of particularly simple measures still further reduction of the inertial masses of the drive transmission elements and thus with a comparatively high machine output extremely sensitive adjustment of the welding pressure is guaranteed.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Antriebsübertragungsorgan von einem Schraubgetriebe gebildet ist. Dieses ist in zweckmäßiger Ausgestaltung von wenigstens einer dem zu verstellenden Schweißbalken zugeordneten Gewindespindel gebildet.This object is achieved in that the drive transmission member is formed by a screw gear. This is in expedient design of at least one of the to be adjusted Welding bar associated threaded spindle formed.

Diese Gewindespindel erstreckt sich im wesentlichen parallel zur Bewegungsrichtung des verstellbaren Schweißbalkens und ist mit letzterem über einen in einem festen Führungselement gleitbeweglich gelagerten Tragkörper verbunden.This threaded spindle extends essentially parallel to the direction of movement of the adjustable welding bar and is connected to the latter via a a fixed guide element connected slidably mounted support body.

Der Tragkörper kann beispielsweise von einer auf der Gewindespindel sitzenden Tragplatte und einer damit fest verbundenen, den Schweißbalken tragenden Führungsstange gebildet sein.The support body can be, for example, of a seated on the threaded spindle Support plate and a firmly connected, supporting the welding beam Guide rod be formed.

Grundsätzlich ist es auch denkbar und unter Umständen vorteilhaft, daß außer dem Schweißbalken auch der damit zusammenwirkende Gegenschweißbalken durch ein Schraubgetriebe angetrieben wird. Basically, it is also conceivable and possibly advantageous that except the welding bar and the counter-welding bar interacting with it Screw gear is driven.  

In diesem Fall ist es vorteilhaft, wenn der Schweißbalken und der Gegenschweißbalken von einer gemeinsamen Gewindespindel mit gegenläufige Steigungen aufweisenden Gewindeabschnitten angetrieben werden.In this case, it is advantageous if the welding bar and the counter welding bar from a common threaded spindle with opposite slopes having threaded sections are driven.

Als besonders zweckmäßig hat es sich gezeigt, daß die Gewindeabschnitte in den Endbereichen der Gewindespindel angeordnet sind und der eine Gewindeabschnitt unmittelbar dem zugehörigen Servomotor verbunden ist. Hierdurch lassen sich die zu bewegenden Massen weiter reduzieren. Bei entsprechender Ausbildung des Motors ist es im Rahmen der Erfindung möglich, daß der zwischen dem Schweißbalken und dem Gegenschweißbalken erzeugte Schweißdruck unmittelbar durch die Stromaufnahme des Motors einstellbar ist.It has been shown to be particularly expedient that the threaded sections in the End regions of the threaded spindle are arranged and the one threaded section is directly connected to the associated servo motor. Let her through the masses to be moved are further reduced. With appropriate training of the engine, it is possible within the scope of the invention that the between the Welding bar and the counter-welding bar generated welding pressure immediately is adjustable by the current consumption of the motor.

Zweckmäßigerweise ist zum Antrieb des Schweißbalkens und/oder des Gegenschweißbalkens ein über die Steuereinrichtung einstellbarer und mit dem Motor synchronisierbarer weiterer Motor vorgesehen. Hierdurch läßt sich der Bewegungsablauf der Schweißbalken/Gegenschweißbalken noch feinfühliger steuern.It is expedient to drive the welding bar and / or the counter-welding bar an adjustable via the control device and with the motor synchronizable further motor provided. This allows the Control the movement sequence of the welding bars / counter-welding bars even more sensitively.

Vorzugsweise erfolgt die Synchronisierung der Motoren der Schweißbalken bezüglich deren Taktzahl und/oder hinsichtlich des Schweißdrucks durch eine elektronische Steuerung. Mit den Mitteln nach der Erfindung wird die gestellte Aufgabe nach einer Schweißvorrichtung mit hoher Produktionsleistung sowie einfachem und exakt einstellbarem Schweißdruck in optimaler Weise gelöst.The motors of the welding bars are preferably synchronized with regard to their number of cycles and / or with regard to the welding pressure by a electronic control. With the means according to the invention, the posed Task for a welding device with high production output as well simple and precisely adjustable welding pressure solved in an optimal way.

Ein bevorzugtes Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher erläutert.A preferred embodiment of the invention is in the drawing shown and is explained in more detail below.

Es zeigtIt shows

Fig. 1 eine Folien-Schweißeinrichtung mit Schweißbalkenantrieb und mit in einer Parkposition befindlichen verstellbarem Schweißbalken und Gegenschweißbalken, Fig. 1 is a film-welding device with welding bars drive and located in a parking position adjustable welding bar and counter-welder bar,

Fig. 2 den Schweißbalken und den Gegenschweißbalken in einer einen Transport der Kunststoffolienbahn zulassenden Arbeitsposition, Fig. 2 shows the welding bar and the counter-welding bar in a transport of the plastic film permitting working position,

Fig. 3 den Schweißbalken und den Gegenschweißbalken in der Schweißposition, Fig. 3 shows the welding bar and the counter-welding bars in the welding position,

Fig. 4 eine schematische Darstellung der Antriebs- und Steuerungseinrichtung für die Schweißwerkzeuge und Fig. 4 is a schematic representation of the drive and control device for the welding tools and

Fig. 5 Weg-Zeit- bzw. Weg-Geschwindigkeit-Schaubilder für den Schweißbalken und den Kunststoffolientransport. Fig. 5 path-time or path-speed diagrams for the welding bar and the plastic film transport.

In den Fig. 1 bis 3 ist schematisch ein Teil einer im einzelnen nicht dargestellten Folienschweißmaschine gezeigt, wie sie beispielsweise zur Herstellung von Schlauch- oder Halbschlauchbahnen aus thermoplastischem Kunststoff abgeschweißten Beuteln, Säcken oder dgl. verwendet wird. Im dargestellten Ausführungsbeispiel wird eine Kunststoffolienbahn 1 in der angegebenen Pfeilrichtung von einem durch einen nicht dargestellten Servomotor angetriebenen Vorzugswalzenpaar 2 schrittweise transportiert. Hinter dem Vorzugswalzenpaar 2 ist eine Schweißeinrichtung 3 mit einem oberen, hin und her gehend angetriebenen Schweißbalken 4 und einen unteren, gleichfalls hin und her angetriebenen Gegenschweißbalken 5 angeordnet. Eine Antriebseinrichtung 6 für die Schweißeinrichtung 3 weist einen Motor 7 sowie ein Antriebsübertragungsorgan in Gestalt eines Schraubgetriebes 8 auf. Zum Schraubgetriebe 8 gehört eine Gewindespindel 9, die sich im wesentlichen parallel zur Bewegungsrichtung des Schweißbalkens 4 und des Gegenschweißbalkens 5 erstreckt. In den Endbereichen der Gewindespindel 9 sind Gewindeabschnitte 11, 12 mit gegenläufiger Steigung angeordnet. Auf den Gewindeabschnitten 11, 12 sitzen Tragkörper in Gestalt von sich im wesentlichen horizontal erstreckenden Tragplatten 13, 14 und jeweils einer damit fest verbundenen Führungsstange 15, 16. Die Führungsstangen sind unter Zwischenschaltung von Lagerelementen 17 in fest angeordneten Führungselementen 18 gleitbeweglich geführt. Jede Führungsstange 15, 16 ist als Träger entweder des Schweißbalkens 4 oder aber des Gegenschweißbalkens 5 ausgebildet.In Figs. 1 to 3 a part of a film sealing machine, not shown in detail is shown schematically as it is, for example, abgeschweißten for the production of tubular or semi-tubular webs of thermoplastic plastic bags, sacks or the like is used.. In the exemplary embodiment shown, a plastic film web 1 is transported step by step in the indicated arrow direction by a preferred roller pair 2 driven by a servo motor, not shown. A welding device 3 with an upper, reciprocally driven welding bar 4 and a lower, likewise back and forth counter welding bar 5 is arranged behind the pair of preferred rollers 2 . A drive device 6 for the welding device 3 has a motor 7 and a drive transmission element in the form of a screw gear 8 . The screw mechanism 8 includes a threaded spindle 9 which extends essentially parallel to the direction of movement of the welding bar 4 and the counter-welding bar 5 . In the end regions of the threaded spindle 9 , threaded sections 11, 12 are arranged with opposite pitch. On the threaded sections 11, 12 there are supporting bodies in the form of essentially horizontally extending supporting plates 13, 14 and in each case a guide rod 15, 16 firmly connected thereto. The guide rods are slidably guided with the interposition of bearing elements 17 in fixedly arranged guide elements 18 . Each guide rod 15, 16 is designed as a support for either the welding bar 4 or the counter welding bar 5 .

Die Antriebseinrichtung 8 ist auf der einen Seite der Kunststoffolienbahn 1 angeordnet. Auf der gegenüberliegenden Seite der Kunststoffolienbahn 1 ist eine identisch ausgebildete, im einzelnen nicht dargestellte Antriebseinrichtung angeordnet, die einen eigenen Motor 7′ aufweist. Die beiden Motoren 7, 7′, die z. B. als Servomotor oder aber auch als Schrittmotor ausgebildet sein können, sind durch eine elektronische Steuerung 19 (Fig. 1) miteinander synchronisiert. Mit 21 ist angedeutet, daß entsprechend der jeweiligen Stromaufnahme der Motoren 7, 7′ der Schweißdruck an der Kunststoffolienbahn 1 einstellbar ist.The drive device 8 is arranged on one side of the plastic film web 1 . On the opposite side of the plastic sheet 1 , an identically designed, not shown in detail drive device is arranged, which has its own motor 7 ' . The two motors 7, 7 ', the z. B. can be designed as a servo motor or as a stepper motor are synchronized with each other by an electronic controller 19 ( Fig. 1). With 21 is indicated that the welding pressure on the plastic sheet 1 is adjustable according to the respective current consumption of the motors 7, 7 ' .

In Fig. 4 ist eine mit Multicontrol Steuerungssystem-Positionierelektronik bezeichnete Steuerungseinrichtung 22 mit einer als elektronisches Getriebe bezeichneten Steuersignalverarbeitungsanlage 23 (Rechner) schematisch dargestellt. Die Steuersignalverarbeitungsanlage steht über Servoverstärker 24, 24′ mit den jeweils zugehörigen, in Abhängigkeit von Impulsgebern 25, 25′ sowie Rotorlagegeber 26, 26′ gesteuerten Motoren 7, 7′ zum Antrieb des Schweißbalkens 4 und des Gegenschweißbalkens 5 in Verbindung. Über einen Sollwertgeber 27 können die jeweils gewünschten Sollwerte für die Taktzahl und den Schweißdruck der Schweißeinrichtung 3, mit denen das Schweißbackenpaar 4, 5 arbeiten soll, eingegeben werden.In FIG. 4 is a designated multi-control control system positioning electronics controller 23 (computer) shown schematically with a called electronic transmission control signal processing device 22. The control signal processing system is connected via servo amplifiers 24, 24 ' to the associated motors 7, 7', which are controlled as a function of pulse generators 25, 25 ' and rotor position sensors 26, 26' , for driving the welding bar 4 and the counter welding bar 5 . The respectively desired setpoints for the number of cycles and the welding pressure of the welding device 3 , with which the welding jaw pair 4 , 5 is to work, can be entered via a setpoint generator 27 .

Die Zusammenhänge zwischen der Schweißbalkenposition, der Schweißbalkengeschwindigkeit sowie der Transportbewegung der Kunststoffolienbahn (Folientransport) ergeben sich im einzelnen aus den in Fig. 5 dargestellten Schaubildern. Im oberen Schaubild sind die Parkposition, die Arbeitsposition, in der eine Vorschubbewegung der Kunststoffolienbahn 1 möglich ist sowie die Schweißposition dargestellt.The relationships between the welding bar position, the welding bar speed and the transport movement of the plastic film web (film transport) result in detail from the diagrams shown in FIG. 5. The upper diagram shows the parking position, the working position in which a feed movement of the plastic film web 1 is possible, and the welding position.

Im übrigen gilt für Fig. 5 die folgende Legende:The following legend also applies to FIG. 5:

T1 Schweißbalken von Parkposition in Arbeitsposition Folientransport verfahren (V-)
T2 Verweilzeit für optimalen Folientransport
T3 Schweißbalken von Arbeitsposition Folientransport in Schweißposition verfahren (Vmax.-)
T4 Schweißzeit
T5 Schweißbalken von Schweißposition in Arbeitsposition Folientransport verfahren (Vmax.+)
T6 Zeit aus (T5+T2+T3+T4) für einen kompletten Arbeitsablauf
T7 FolientransportT1 Move the welding bar from the parking position to the working position of the film transport (V-)
T2 dwell time for optimal film transport
T3 Move the sealing bar from the working position film transport to the sealing position (Vmax.-)
T4 welding time
Move T5 welding bar from welding position to working position film transport (Vmax. +)
T6 time out (T5 + T2 + T3 + T4) for a complete workflow
T7 film transport

Unter Berücksichtigung obiger Erläuterungen ergibt sich für die erfindungsgemäße Schweißvorrichtung folgende Funktion:Taking into account the above explanations, the following applies to the invention Welding device the following function:

Ausgehend von der in Fig. 1 dargestellten Parkposition werden die Gewindespindeln 9, 9′ über die Motoren 7, 7′ drehsinnrichtig umlaufend angetrieben, so daß die Schweißeinrichtung 3 die in Fig. 2 dargestellte Arbeitsposition einnimmt. In dieser Stellung ist eine Transportbewegung der Kunststoffolienbahn 1 möglich. Erst nach weiterem Verdrehen der Gewindespindeln bis in die in Fig. 3 dargestellte Stellung, wird die Schweißposition erreicht. In dieser werden die Motoren 7, 7′ entsprechend der gewünschten Schweißzeit und des Schweißdrucks angehalten. Die Verweilzeit und der Schweißdruck in dieser Position sind variabel, so daß die Schweißzeit und/oder Schweißdruck in gewünschtem Sinne verlängert oder verkürzt werden können. Nach Ablauf der vorgegebenen Schweißzeit öffnen der Schweißbalken 4 und der Gegenschweißbalken 5, was dadurch erreicht wird, daß die Gewindespindeln 9, 9′ in entgegengesetztem Uhrzeigersinn verdreht werden und somit die Schweißeinrichtung in die in Fig. 2 gezeigte Arbeitsposition zurückbewegen. Ab einem bestimmten Öffnungsweg der Schweißbalken kann der Folientransport erfolgen. In Abhängigkeit von der Vorschublänge und der gewünschten Produktionsgeschwindigkeit wird schließlich durch die Steuereinrichtung ein Schließbefehl ausgelöst und die Schweißbalken fahren wieder in die Schweißposition zurück, so wie dies in Fig. 3 gezeigt ist. Bei Maschinenstopp läßt sich die Schweißeinrichtung 3 in die in Fig. 1 gezeigte Parkposition verfahren.Starting from the parking position shown in Fig. 1, the threaded spindles 9, 9 'are driven by the motors 7, 7' rotating in the correct direction, so that the welding device 3 assumes the working position shown in Fig. 2. In this position, a transport movement of the plastic sheet 1 is possible. The welding position is only reached after the threaded spindles have been turned further into the position shown in FIG. 3. In this, the motors 7, 7 ' are stopped according to the desired welding time and the welding pressure. The dwell time and the welding pressure in this position are variable, so that the welding time and / or welding pressure can be lengthened or shortened as desired. After the specified welding time, the welding bar 4 and the counter-welding bar 5 open, which is achieved in that the threaded spindles 9, 9 ' are rotated in the counterclockwise direction and thus move the welding device back into the working position shown in FIG. 2. The film can be transported from a certain opening distance of the welding bars. Depending on the feed length and the desired production speed, a closing command is finally triggered by the control device and the welding bars move back into the welding position, as shown in FIG. 3. When the machine stops, the welding device 3 can be moved into the parking position shown in FIG. 1.

Insgesamt gesehen ergibt sich eine Folienschweißeinrichtung, die sich durch einen einfachen Aufbau, eine hohe Dynamik, infolge reduzierter Massenkräfte, einen elektrisch einstellbaren Schweißdruck sowie eine hohe Produktionsleistung auszeichnet. Seen overall, there is a film welding device that is characterized by a simple structure, a high dynamic, due to reduced mass forces, an electrically adjustable welding pressure and high production output distinguished.  

Die Vorrichtung kann grundsätzlich auch bei mehreren mit Abstand hintereinander angeordneten Schweißeinrichtungen angewendet werden. Schließlich können als Motore auch Schrittmotore vorgesehen sein, die über eine elektronische Antriebssteuerung steuerbar sind, die ihrerseits über die Schrittimpulse die Laufzeiten der Schrittmotore steuert. Die Schrittmotore können dabei mit Positionskontrolleinrichtungen versehen sein, die die jeweiligen Positionen an einen Zentralrechner zurückmelden. Schrittmotore sind nur ein weiteres Beispiel für in Frage kommende Motore. Grundsätzlich können als Antriebsmotore alle Motore verwendet werden, die steuerbar sind.In principle, the device can also be used with several Welding devices arranged one behind the other can be used. Finally, stepper motors can also be provided as the motors an electronic drive control can be controlled, which in turn via the Stepping impulses controls the running times of the stepping motors. The stepper motors can be provided with position control devices that report the respective positions back to a central computer. Stepper motors are just another example of possible engines. Basically you can all motors that can be controlled are used as drive motors.

Claims (12)

1. Vorrichtung zur Steuerung von Schweißwerkzeugen an Folienschweißmaschinen, insbesondere bei der Herstellung von Beuteln, Säcken oder dgl. aus thermoplastischen Kunststoffolienbahnen, mit wenigstens einem von einem Motor und einem damit verbundenen Antriebsübertragungsorgan hin und her gehend angetriebenen Schweißbalken und einem damit zusammenwirkenden Gegenschweißbalken sowie einer Steuereinrichtung für den Antrieb, dadurch gekennzeichnet, daß das Antriebsübertragungsorgan von einem Schraubgetriebe (8) gebildet ist.1. Device for controlling welding tools on film welding machines, in particular in the manufacture of bags, sacks or the like from thermoplastic plastic sheeting, with at least one welding bar driven to and fro by a motor and an associated drive transmission element and a counter welding bar interacting therewith and a control device for the drive, characterized in that the drive transmission member is formed by a screw gear ( 8 ). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Schraubgetriebe (8) von wenigstens einer dem zu verstellenden Schweißbalken (4) zugeordneten Gewindespindel (9) gebildet ist.2. Device according to claim 1, characterized in that the helical gear ( 8 ) is formed by at least one of the welding bar to be adjusted ( 4 ) associated threaded spindle ( 9 ). 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Gewindespindel (9) im wesentlichen parallel zur Bewegungsrichtung des verstellbaren Schweißbalkens (4) angeordnet und mit letzterem über einen in einem festen Führungselement (18) gleitbeweglich gelagerten Tragkörper (13, 15) verbunden ist. 3. Apparatus according to claim 1 or 2, characterized in that the threaded spindle ( 9 ) is arranged substantially parallel to the direction of movement of the adjustable welding bar ( 4 ) and with the latter via a supporting body ( 13, 15 ) which is mounted so as to be slidably movable in a fixed guide element ( 18 ). connected is. 4. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Tragkörper von einer auf der Gewindespindel (9) sitzenden Tragplatte (13) und einer damit fest verbundenen, den Schweißbalken (4) tragenden Führungsstange (15) gebildet ist.4. The device according to one or more of claims 1 to 3, characterized in that the supporting body is formed by a support plate ( 13 ) seated on the threaded spindle ( 9 ) and a guide rod ( 15 ) which is firmly connected to it and carries the welding bar ( 4 ) . 5. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß außer dem Schweißbalken (4) auch der damit zusammenwirkende Gegenschweißbalken (5) durch ein Schraubgetriebe angetrieben ist.5. The device according to one or more of claims 1 to 4, characterized in that in addition to the welding bar ( 4 ) and the counter-welding bar ( 5 ) cooperating therewith is driven by a screw gear. 6. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Schweißbalken (4) und der Gegenschweißbalken (5) von einer gemeinsamen Gewindespindel (9) mit gegenläufige Steigungen aufweisenden Gewindeabschnitten (11, 12) angetrieben sind.6. The device according to one or more of claims 1 to 5, characterized in that the welding bar ( 4 ) and the counter-welding bar ( 5 ) are driven by a common threaded spindle ( 9 ) with opposing pitches ( 11, 12 ). 7. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Gewindeabschnitte (11, 12) in den Endbereichen der Gewindespindel (9) angeordnet sind und daß der eine Gewindeabschnitt (11) unmittelbar mit dem zugehörigen Motor (7) verbunden ist.7. The device according to one or more of claims 1 to 6, characterized in that the threaded sections ( 11, 12 ) are arranged in the end regions of the threaded spindle ( 9 ) and that the one threaded section ( 11 ) directly with the associated motor ( 7 ) connected is. 8. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der zwischen dem Schweißbalken (4) und dem Gegenschweißbalken (5) erzeugte Schweißdruck unmittelbar durch die Stromaufnahme des Motors (7) einstellbar ist.8. The device according to one or more of claims 1 to 7, characterized in that the welding pressure generated between the welding bar ( 4 ) and the counter-welding bar ( 5 ) is directly adjustable by the current consumption of the motor ( 7 ). 9. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß zum Antrieb der Schweißeinrichtung (3) ein durch die Steuereinrichtung (22) einstellbarer und mit dem Motor (7) synchronisierbarer weiterer Motor (7′) mit zugeordnetem Schraubgetriebe (Gewindespindel 9′) vorgesehen ist.9. The device according to one or more of claims 1 to 8, characterized in that for driving the welding device ( 3 ) by the control device ( 22 ) adjustable and with the motor ( 7 ) synchronizable further motor ( 7 ' ) with an associated screw gear ( Threaded spindle 9 ' ) is provided. 10. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Synchronisierung der Motoren (7, 7′) der Schweißeinrichtung (3) bezüglich der Taktzahl und/oder des Schweißdruckes durch eine elektronische Steuerung erfolgt.10. The device according to one or more of claims 1 to 9, characterized in that the synchronization of the motors ( 7, 7 ' ) of the welding device ( 3 ) with respect to the number of cycles and / or the welding pressure is carried out by an electronic control. 11. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß als Motore Servomotore vorgesehen sind.11. The device according to one or more of claims 1 to 10, characterized characterized in that servomotors are provided as motors. 12. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß als Motore Schrittmotors vorgesehen sind.12. The device according to one or more of claims 1 to 10, characterized characterized in that stepper motors are provided as motors.
DE19924241974 1992-12-12 1992-12-12 Simple welding appts. for use with thermoplastic film - has drive for vertical screw spindle whose ends are oppositely threaded so as to bring together or separate welding and backing blades Expired - Fee Related DE4241974C1 (en)

Priority Applications (1)

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DE19924241974 DE4241974C1 (en) 1992-12-12 1992-12-12 Simple welding appts. for use with thermoplastic film - has drive for vertical screw spindle whose ends are oppositely threaded so as to bring together or separate welding and backing blades

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DE19924241974 DE4241974C1 (en) 1992-12-12 1992-12-12 Simple welding appts. for use with thermoplastic film - has drive for vertical screw spindle whose ends are oppositely threaded so as to bring together or separate welding and backing blades

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006006601A1 (en) * 2006-02-10 2007-08-16 Edmund Mundorf Device for processing a material web
EP2497621A2 (en) 2011-03-09 2012-09-12 Rische + Herfurth GmbH Method for operating a welding device, in particular a thermal pulse controlled and/or continuously heated film welding and/or heat sealing device with preselected electronic process-controlled pressure and temperature control and device therefor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931967A1 (en) * 1989-09-25 1991-04-04 Windmoeller & Hoelscher DEVICE FOR CONTROLLING MACHINES FOR PRODUCING BAGS OR BAGS
DE4026711A1 (en) * 1990-08-24 1992-02-27 Ulrich Grosser Welding machine for plastic components - moves them to heated blade and then butt welds them together using feed system which moves them very precisely

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931967A1 (en) * 1989-09-25 1991-04-04 Windmoeller & Hoelscher DEVICE FOR CONTROLLING MACHINES FOR PRODUCING BAGS OR BAGS
DE4026711A1 (en) * 1990-08-24 1992-02-27 Ulrich Grosser Welding machine for plastic components - moves them to heated blade and then butt welds them together using feed system which moves them very precisely

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006006601A1 (en) * 2006-02-10 2007-08-16 Edmund Mundorf Device for processing a material web
EP2497621A2 (en) 2011-03-09 2012-09-12 Rische + Herfurth GmbH Method for operating a welding device, in particular a thermal pulse controlled and/or continuously heated film welding and/or heat sealing device with preselected electronic process-controlled pressure and temperature control and device therefor
DE102011001167A1 (en) 2011-03-09 2012-09-13 Rische + Herfurth GmbH Method for operating a welding device, in particular a heat pulse-controlled and / or permanently heated foil welding and / or heat-sealing device with preselectable electronic, processor-controlled contact pressure and temperature control and device for this purpose
DE102011001167B4 (en) * 2011-03-09 2017-11-02 Rische + Herfurth GmbH Method for operating a welding device, in particular a heat pulse-controlled and / or permanently heated foil welding and / or heat-sealing device with preselectable electronic, processor-controlled contact pressure and temperature control and device for this purpose

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