Cell of a brush making device

A cell of a brush-making device for making at least a part of a toothbrush, comprising:

• a pin unit comprising at least one pin, a pin holding sub-unit, and a pin guiding sub-unit;
• the pin having a first section having a first end and a second section having a second end, the first section comprising a holding structure, and at least one spring section arranged between the first section and the second section;
• the pin holding sub-unit comprising a holding structure that is engaged with the holding structure of the pin for fixedly holding the pin, the pin holding sub-unit and the pin guiding sub-unit being arranged for being movable along a first direction towards and away from each other;
• and
• the pin guiding sub-unit having a channel for guiding at least a portion of the second section of the pin, the channel being inclined against the first direction,
• wherein the cross-sectional area and the cross-sectional shape of the pin in the spring section is essentially constant over the extension length of the spring section and the cross-sectional shape of the spring section is essentially rectangular, wherein a rectangle has a short side and a long side.