Press-forming device for depositing solder and producing individual solder bodies
A press-forming device for forming individual solder bodies from a wire of soldering material includes a press-forming mechanism and a separation means. The press-forming mechanism forms a continuous strand of preformed solder sections from the wire by using two notched rollers that rotate in opposite directions and that press opposite notches into the wire. The preformed solder sections are disposed equidistantly along the strand and are connected to each other by connecting links disposed at the notches. The separation means forms individual solder bodies by separating the preformed solder sections one by one at the connecting links. The separation means separates individual preformed solder sections using a cutting mechanism that moves in a direction perpendicular to the length direction of the strand. Individual solder bodies are transported to a solder jetting section where they are liquefied by a laser beam and jetted from the solder jetting section by gas pressure.
1 . A press-forming device for forming individual solder bodies from a wire of soldering material, comprising:
a press-forming mechanism configured to form a continuous strand of preformed solder sections from the wire, wherein the press-forming mechanism is configured to press radially opposite notches into the wire, thereby forming ball-shaped preformed solder sections, wherein the preformed solder sections are disposed equidistantly along the continuous strand, wherein the preformed solder sections are connected to each other by connecting links disposed at notches pressed into the wire by the press-forming mechanism, wherein the press-forming mechanism includes a first notched roller and a second notched roller that rotate in opposite directions, wherein the first notched roller and the second notched roller radially press the radially opposite notches into the wire, wherein the first notched roller has a first peripheral groove, and the second notched roller has a second peripheral groove, and wherein the first peripheral groove and the second peripheral groove guide the wire through the press-forming mechanism in an advancing direction planar with the first notched roller and the second notched roller; and
a separation cutter configured to form individual solder bodies by separating the preformed solder sections one by one at the connecting links.
2 . The device of claim 1 , wherein the press-forming mechanism is configured to press profiled notches into the wire.
3 . The device of claim 1 , wherein the first notched roller and the second notched roller have parallel rotational axes, and wherein the wire is guided perpendicularly to the rotational axes of the first notched roller and the second notched roller.
4 . The device of claim 1 , wherein each of the first notched roller and the second notched roller has a tooth profile, and wherein the preformed solder sections have shapes determined by the tooth profile.
5 . The device of claim 1 , wherein the separation cutter includes a cutting mechanism that separates individual preformed solder sections from the strand to form the individual solder bodies, and wherein the cutting mechanism moves in a direction perpendicular to a length direction of the strand.
6 . The device of claim 1 , wherein the separation cutter includes a cutting mechanism that has a movable element, and wherein the movable element moves linearly in a direction perpendicular to a length direction of the strand.
7 . The device of claim 1 , wherein the separation cutter includes a cutting mechanism that has a movable element, and wherein the movable element moves rotationally in a plane perpendicular to a length direction of the strand.
8 . The device of claim 1 , wherein the separation cutter includes a cutting mechanism that has a movable element, and wherein the movable element includes a receiving hole configured to receive a preformed solder section.
9 . A laser-assisted soldering apparatus, comprising:
a press-forming mechanism configured to form a continuous strand of preformed solder sections from a wire of soldering material, wherein the press-forming mechanism is configured to press radially opposite notches into the wire, thereby forming ball-shaped preformed solder sections, wherein the preformed solder sections are disposed equidistantly along the continuous strand, and wherein the preformed solder sections are connected to each other by connecting links disposed at notches pressed into the wire by the press-forming mechanism, wherein the press-forming mechanism includes a first notched roller and a second notched roller that rotate in opposite directions, wherein the first notched roller and the second notched roller radially press the radially opposite notches into the wire, wherein the first notched roller has a first peripheral groove, and the second notched roller has a second peripheral groove, and wherein the first peripheral groove and the second peripheral groove guide the wire through the press-forming mechanism in an advancing direction planar with the first notched roller and the second notched roller;
a separation cutter configured to form individual solder bodies by separating the preformed solder sections one by one at the connecting links; and
a solder jet that holds individual solder bodies while the individual solder bodies are being liquefied by a laser beam, wherein upon being liquefied the individual solder bodies are jetted from the solder jet.
10 . The apparatus of claim 9 , wherein the separation cutter includes a movable element that separates the preformed solder sections from the strand to form the individual solder bodies, and wherein the movable element transports the individual solder bodies to a solder body holding capillary of the solder jet.
11 . The apparatus of claim 10 , wherein the individual solder bodies are jetted from the solder jet by gas pressure applied into the solder body holding capillary.
12 . The apparatus of claim 10 , further comprising:
a laser generating device that directs a laser beam towards individual solder bodies disposed in the solder body holding capillary.
13 . The apparatus of claim 10 , further comprising:
a laser generating device that emits a laser beam axially through the solder body holding capillary.
14 . The apparatus of claim 10 , further comprising:
an infrared temperature sensor adapted to measure a temperature of individual solder bodies in the solder body holding capillary.
15 . The apparatus of claim 9 , wherein the first notched roller and the second notched roller have parallel rotational axes, and wherein the wire is guided perpendicularly to the rotational axes of the first notched roller and the second notched roller.
16 . A method for producing individual solder bodies from a wire of soldering material, comprising:
press-forming the wire so as to obtain a continuous strand of preformed solder sections, wherein radially opposite notches are pressed into the wire, thereby forming ball-shaped preformed solder sections, wherein the preformed solder sections are disposed equidistantly next to each other along the continuous strand and are connected to each other by connecting links disposed at notches pressed into the wire, wherein the press-forming mechanism includes a first notched roller and a second notched roller that rotate in opposite directions, wherein the first notched roller and the second notched roller radially press the radially opposite notches into the wire, wherein the first notched roller has a first peripheral groove, and the second notched roller has a second peripheral groove, and wherein the first peripheral groove and the second peripheral groove guide the wire through the press-forming mechanism in an advancing direction planar with the first notched roller and the second notched roller; and
separating individual solder bodies from the continuous strand of preformed solder sections by separating the individual preformed solder sections one by one at the connecting links.
17 . The method of claim 16 , wherein the first notched roller and the second notched roller have parallel rotational axes, and wherein the wire is guided perpendicularly to the rotational axes of the first notched roller and the second notched roller.
18 . The method of claim 16 , further comprising:
transporting individual solder bodies to a solder body holding capillary; and
jetting individual solder bodies from the solder body holding capillary using gas pressure applied into the solder body holding capillary.