摘要:
A mobile strapping device for strapping packaged goods with wrap-around strap comprises a tensioner (6) for applying a strap tension to a loop of a wrapping strap, and a friction welder (10) for producing a friction weld connection by way of a friction welding element at two areas of the loop of the wrapping strap disposed one on top of the other, and a chargeable energy storage means (15) for storing electrical energy that can be released as drive energy for motorized drive motions at least for the friction welder for producing a friction weld connection. In order for such a strapping device to have high functional reliability and ease of handling, despite the possibility of automated production of wrapped straps, at least to a large extent, it is proposed for the strapping device to comprise a planetary gear system (35, 37, 38) for transferring and changing the rotational speed of a drive motion provided by an electrical drive of the friction welder.
摘要:
The invention relates to a mobile strapping device for strapping packed goods using a strap, said device comprising a tightening mechanism for applying tension to a loop of a strap, a friction welding element (5) for producing a friction welding connection for two overlapping regions of the loops of the strap, and a rechargeable energy accumulator (10) for storing energy, especially mechanical, elastic or potential energy that can be released as drive energy for the friction welding element (5) for producing a friction welding connection. Such a mobile strapping device can be used without a battery, with the highest level of efficiency. To this end, the energy accumulator (10) can be charged by means of a manually actuatable actuating element, and when energy stored in the energy accumulator (10) is released therefrom, a movement is carried out without reversing the direction of the movement.
摘要:
A control system for a weld motor for a strapping machine is based upon the number of rotations of the weld motor. The system is used in a strapping machine of the type having a body, an anvil mounted to and movable relative to the body, a sealing member disposed for oscillating movement relative to the anvil and a motor operably connected to the sealing member to provide oscillating movement to the sealing member. Movement of the sealing member seals overlying courses of strapping material to one another. The control system includes a sensed element located on a rotating portion of the motor, a sensor for generating a signal at each instance of sensing the sensed element, a counter operably connected to the sensor for counting the instances of the sensed element and a controller for controlling operation of the motor based upon the counting of the instances of the sensed element. A method for controlling a motor is also disclosed.
摘要:
An electric strapping tool has an electric motor (10) with an output shaft (12) coupled to a feed wheel (20) and a modulator circuit (40) coupled to a power input of the motor (10) for controlling strap tension. A magnet (14) is disposed on an end of the motor armature and offset from the rotation axis thereof, and a magnetic field detector (52) is disposed near the magnet (14) to detect rotation of the armature. The motor (10) rotates the feed wheel (20) and vibrates a welding jaw (80) when the shaft (12) rotates in one direction, and tool parameter adjustment potentiometers (70,72) are isolated from abuse by the tool user by corresponding control knobs coupled thereto.
摘要:
A strap welding tool (100) and method therefor including a first cam member (60) for moving a sealing gripper (30) toward a first support member (32) to engage and retain tensioned strap (3) disposed therebetween, a second cam member (62) for enabling a vibrator motor (48) to vibrate a welding pad (40), and a third cam member (64) for moving the welding pad (40) toward a second support member (42) to engage and weld overlapping strap portions (2,3) disposed therebetween. The tool (100) includes a relatively small base plate (110) to reduce loss of strap tension upon removal of the tool from between strap tensioned about small and irregular loads. A columnar strength of a strap portion (3) engaged by the vibrating welding pad (40) is reduced by deforming or bending the strap portion (3) over a vertex (120), and preferably forming a gap between upper and lower strap portions (2,3).
摘要:
Die Erfindung betrifft eine Vorrichtung zum Umreifen von Packstücken mit einem thermoplastischen Band, welches von einem Bandvorrat (55) in einen das Packstück umgebenden Bandführungskanal (12) ein- und durch diesen hindurch einem Bandverschlußaggregat (15) zugeführt wird, welches in der Bandumreifungsebene einander überlappende Bandabschnitte (43,44) mittels Reibschweißen miteinander verbindet, wobei vor und hinter dem Überlappungsbereich jeweils eine Klemmbacke (25',41') zum Andrücken eines Bandabschnitts gegen ein Widerlager vorgesehen ist und im Überlappungsbereich der Bandabschnitte ein parallel zur Bandebene oszillierend angetriebener Schwinger (22) den ihm zugekehrten Bandabschnitt relativ zu dem anderen in hochfrequente, Reibungshitze erzeugende, Schwingungen versetzt und dadurch die Bandabschnitte miteinander verschweißt, und wobei die Klemmbacke (25') desjenigen Bandabschnitts, an dem der Schwinger angreift, in und entgegen wenigstens einer zur Bandebene parallelen Richtung beweglich angeordnet ist. Mit dem Ziel einer apparativ einfachen Ausführung ist eine Scherbeanspruchungen des vom Schwinger bewegten Bandendes vermeidende Vorrichtung dadurch geschaffen, daß der Schwinger um eine Achse (29) oszilliert, die durch die bewegliche Klemmbacke verläuft und daß diese um dieselbe Achse gleichsinnig mit dem Schwinger oszilliert, jedoch lediglich vom schwingenden Bandabschnitt mitgeführt wird.
摘要:
Es ist eine Vorrichtung zum Verbinden der Enden von beim Abbinden von Gütern verwendeten Bändern aus thermoplastischem Material offenbart, die eine als Auflage für die aufeinanderliegenden Enden der Bänder dienende entfernbare Platte (3) und einen über der Platte (3) bewegbaren und gegen die auf der Platte (3) liegenden Enden der Bänder anstellbaren Kopf (13) aufweist. Die Hinterlege-Platte (3) ist zweiteilig ausgebildet, und der Kopf (13) ist ein Drehkörper, der um seine Längsachse hin- und herschwenkbar gelagert ist, oder ein Druckstempel, der die erwärmten Enden der Bänder zum Verschweißen derselben aufeinanderdrückt.