Squeegee device and screen printing machine
View Patent ↗A squeegee device includes a squeegee that has a sliding contact portion in sliding contact with a screen mask, and that prints a solder on a circuit board through the screen mask, wherein an attack angle of the squeegee is adjustable. In the squeegee device, when adjusting the attack angle during a tooling change in which the type of circuit board is changed, positions of the sliding contact portion before and after adjustment substantially match.
1. A squeegee device, comprising:
at least one squeegee with an adjustable attack angle, having a sliding contact portion that is in sliding contact with a screen mask, and printing a solder on a circuit board through the screen mask, wherein
when adjusting the attack angle during a tooling change in which a type of the circuit board is changed, positions of the sliding contact portion before and after adjustment substantially match;
a pivot member that holds the squeegee and has a guided portion; and
a fixed member that has a bolt member and a guide portion, wherein
the guide portion 1) forms an arc-shaped track generally centered around the sliding contact portion of the squeegee, and 2) guides the guided portion in the arc-shaped track,
the guide portion has an outer guide piece that guides the guided portion from a radial outer side, and an inner guide piece that guides the guided portion from a radial inner side, generally centered around the sliding contact portion of the squeegee,
the outer guide piece and the inner guide piece are disposed independently of each other,
the bolt member is configured to be manually rotated by an operator and includes a head portion and an axial portion,
the head portion is disposed radially outward of the outer guide piece, and
the axial portion runs through the outer guide piece in a radial direction and is fastened to the inner guide piece.
2. The squeegee device according to claim 1 , further comprising:
a lifting/lowering member that can lift and lower the pivot member and the fixed member.
3. The squeegee device according to claim 2 , wherein
at least one among the pivot member and the fixed member has a scale that one of directly and indirectly shows the attack angle.
4. The squeegee device according to claim 2 , further comprising:
a paste doctor blade that is disposed on the fixed member, and during printing suppresses spreading out of the solder to an outer side from both ends of the squeegee in a lengthwise direction.
5. A screen printing machine, comprising:
a squeegee device according to claim 1 .
6. The squeegee device according to claim 1 , wherein
the outer guide piece has an uneven lower surface and the guided portion has an uneven upper surface.