CONTROL METHOD AND SYSTEM AND ADJUSTMENT OF OPERATION VARIABLE OF HIGH-FREQUENCY WELDING AND CUTTING EQUIPMENT

Abstract

A system and method to control and adjust operation variables of high frequency welding and cutting equipment is described that allows to adjust the operation frequency and pressure of high-frequency welding and cutting equipment, with the possibility to perform automatic variations to increase or decrease the power based on historical data stored in memory, to promote the welding and cutting of leather, synthetic and plastic laminated materials.

Claims

1. CONTROL AND ADJUSTMENT SYSTEM OF OPERATION VARIABLES OF HIGH-FREQUENCY WELDING AND CUTTING EQUIPMENT comprising a generator (10) that transforms electrical energy into high-frequency energy, a tuner (20) which regulates the high-frequency energy transfer to the material to be welded (100), as to transfer the power required for welding within the specification, a press (30) which completes the material welding, such press (30) that vertically moves towards a mold (electrode) (40) provided with knives, such electrode (40) suffers pressure on a table (50) where the workpiece is positioned (100) to be welded that is submitted to uniform heating with the passage of the high-frequency current generated in the resonant cavity (60) where a high-frequency electric field is generated via capacitive and inductive circuits, comprising a quadrangular resonant cavity (60), such cavity (60) provided with a capacitor (61) connected to a tuner (20) which, in turn, is connected to the controller (cont) of the equipment adjusted through an interface (HMI).

2. CONTROL AND ADJUSTMENT SYSTEM OF OPERATION VARIABLES OF HIGH-FREQUENCY WELDING AND CUTTING EQUIPMENT comprising an interface (HMI) to adjust the variables: a) input data related to the pressure informed in the interface (HMI) and sent to the controller (Cont) where processing is performed that includes the power conversion calculation in pressure as to send the obtained data to the pressure regulating valve (32) of the cylinder (31) of the press (30), being the input data and output data stored in the memory (MEM) of the controller (Cont); b) Input data related to the working frequency informed in the interface (HMI) and sent to the controller (Cont) where processing is performed that includes the current conversion calculation to an analog signal to adjust the tuner (20) that performs capacitor adjustment (61) of the resonant cavity (60) to control the power released on the workpiece (100), being the input data and output data stored in the memory (MEM) of the controller (Cont).

Description

BRIEF DESCRIPTION OF THE FIGURES

[0015] FIG. 1 shows a schematic representation of the construction elements of high-frequency welding equipment.

[0016] FIG. 2 shows a perspective view of the quadrangular resonant cavity of the high-frequency welding equipment.

[0017] FIG. 3 shows the adjustment flowchart of the pressure and flow variables.

DETAILED DESCRIPTION OF THE INVENTION

[0018] Conventional high-frequency welding and cutting equipment consists of a generator (10) that transforms electrical energy into high-frequency energy, a tuner (20) which regulates the high-frequency energy transfer to the material to be welded (100), as to transfer the power required for welding within the specification, a press (30) which complete the welding of the material, such press (30) that moves vertically towards a mold (electrode) (40) under pressure on a table (50) where the workpiece is positioned (100) to be welded which is submitted to uniform heating due to dielectric losses that develop with the passage of the high-frequency current generated in the resonant cavity (60) where a high-frequency electric field is generated through capacitive and inductive circuits.

[0019] The electrode (40) has knives fastened on a plate to cut the welded workpiece (100), facilitating the removal of such workpiece (100).

[0020] The resonant cavity (60) has a quadrangular shape, such cavity (60) provided with a capacitor (61) connected to a tuner (20) in turn connected to the controller (cont) of the equipment.

[0021] In the high-frequency welding and cutting equipment, an interface (HMI) is foreseen, where the operator adjusts the pressure and the frequency of work, with the possibility to perform automatic variations to increase or decrease the power based on historical data stored in the controller's memory.

[0022] In the interface (HMI) of the high-frequency welding and cutting equipment the user adjusts the process variables, informing the high-frequency current, the time of high-frequency application, the high-frequency cycle interval, the number of cycles, the cooling time, the cutting time, the pressure during high-frequency application, the pressure for the cutting and the sequence of the cutting process.

[0023] Input data entered by the operator in the interface (HMI) are sent to the controller (Cont), where processing is made that includes the power conversion calculation in pressure as to send the obtained data to the pressure regulating valve (32) of the cylinder (31) of the press (30), and the current conversion calculation in analog signal as to adjust the tuner (20) that adjusts the capacitor (61) of the resonant cavity (60) to control the power released on the workpiece (100).

[0024] Input data entered by the operator in the interface (HMI) of the equipment are stored in the memory (Mem) of the controller (Cont) associated with the data processed by the controller (Cont) (output data).