Control method of a welding device, an elastic guiding system, a welding device positioning arrangement and a welding device

Control method of a welding device having an upper tool, a lower tool, a control unit and a welding device positioning arrangement comprising a static first section and a second section movable relative to the static first section, at least one drive system connected at a first end to the first section and at a second end to the second section, and at least one elastic guiding system by means of which the first section and the second section are connected to each other, wherein the first and second sections are movable relative to each other along only one axis due to the at least one elastic guiding system, so that an axial length of the welding device positioning arrangement can be varied, and the at least one drive system of the welding device positioning arrangement comprises:

• i. a moving coil drive, or
• ii. at least one of the group consisting of a piezo motor, a linear motor, an electromagnetic drive system, a coil system or a drive with a field or excitation coil, or
• iii. a rotatory motor which comprises mechanical losses which are less than a force with which, in operation, the first component can be pressed against the second component, wherein the force is ≤1 kN,
• and wherein the control method comprises the following steps:
• a. moving the lower tool and the upper tool relative to each other so that a distance between the lower tool and the upper tool is decreased from an initial first distance to a reduced second distance,
• b. actuating the at least one drive system of the welding device positioning arrangement so that the distance between the static first section and the movable second section is increased whereby a first and a second component are pressed against each other with a force and,
• c. during the actuating of the at least one drive system, measuring a force at the static first section of the welding device positioning arrangement and/or a position of the movable second section of the welding device positioning arrangement relative to the static first section, comparing the measured force and/or position with a predetermined force and/or position, and stopping the actuating after the predetermined force and/or position has been reached, subsequently
• d. welding the first and the second component to each other,
• e. actuating the at least one drive system of the welding device positioning arrangement after welding so that the distance between the static first section and the movable second section is decreased, and
• f. moving the lower tool and the upper tool relative to each other so that a distance between the lower tool and the upper tool is increased.