A needle roller device comprises a first cover, a second cover, several needle pieces and several separation elements. The needle pieces are disposed between the first cover and the second cover, and each needle piece comprises several needles and a plate. The needles are connected to an edge of the plate, wherein the needles and the plate are integrated into one piece. The separation elements are disposed between the first cover and the second cover. The separation elements and the needle pieces are staggered.滾針裝置包括一第一擋蓋、一第二擋蓋、數個滾針片及數個分隔件。此些滾針片設於第一擋蓋與第二擋蓋之間,且各滾針片包括數根針體及板體,此些針體連接於板體的邊緣,其中該些針體及板體係一體成形。此些分隔件設於第一擋蓋與第二擋蓋之間,且與此些滾針片交錯配置。
