Electrically-operated opening/closing device

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 45/66 (2006.01) B29C 45/68 (2006.01)

Patent

CA 2405006

Means for advancing and retreating a movable die plate 9 toward and from a fixed die plate 5 includes a moving base 17 in which the upper surface thereof is connected integrally with the movable die plate 9 and a slide unit 21 is installed on the lower surface thereof; a pair of track rails 23 which are provided on the base 1 and form a linear guide by engaging with the slide unit 21; a ball screw shaft 35 which is supported in parallel with the track rails 23 by a bearing provided on the base 1 and in which axial direction is restrained rotatably; a servomotor 45 for driving the ball screw shaft 35; and a ball screw nut 37 which is installed on the lower surface of the moving base 17 so as to threadedly engage with the ball screw shaft 35, and the ball screw shaft 35 and the ball screw nut 37 are provided at an arbitrary position between the paired track rails 23 for linear guide.

La présente invention concerne un dispositif de fermeture électrique qui peut déplacer un plateau-matrice mobile (9) vers l'avant et vers l'arrière par rapport à un plateau-matrice fixe (5). Le système comprend une table mobile (17) sur la surface supérieure de laquelle est installé le plateau-matrice mobile (9) et une unité de coulisseau (21) installée sur ses deux côtés inférieurs, deux rails (23) qui sont montés sur une base (1) et qui se trouvent en contact avec l'unité de coulisseau (21) pour former des guides linéaires, un axe avec vis à billes (35) supporté rotatif et axialement non mobile, sur des paliers installés à demeure sur la base (1) parallèlement aux rails (23), un servomoteur (45) qui commande l'axe avec vis à billes (35) et un écrou (37) vissé sur l'axe avec vis à billes (35) et installé sur la surface inférieure de la table mobile (17), ledit axe avec vis à billes (35) et son écrou (37) étant installés entre les rails (23) des deux guides linéaires, à n'importe quel endroit.

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