Abstract:
The unit comprises a first grinding wheel (81) and a second grinding wheel (83) acting on a first side (207) and on a second side (209) of the bevel (205) of the blade (19). The first grinding wheel (81) has a finer grain than the second grinding wheel (83). Moreover, the first grinding wheel also has an inclination that is not parallel to the respective first side (207) of the bevel (205) of the blade (19), while the second grinding wheel (83) has an inclination essentially parallel to the second side (209) of said bevel.
Abstract:
The sharpening unit (50) comprises a grinding wheel unit (80) with at least two grinding wheels (51, 53) opposed to act on two sides defining a cutting bevel of the blade (19). The grinding wheel unit is provided with at least a degree of freedom to center the grinding wheels (51, 53) in respect of a lying surface of the portion of the cutting bevel of the blade (19) on which said grinding wheels act.
Abstract:
The invention relates to a machine for producing a tubular product (T) by means of helical winding of strips of web material, comprising a mandrel (4) and a winding member (7) to helically wind the strips (S1, S2) of web material around said mandrel. To improve adhesion between the strips at least one pressure member (31) is provided, cooperating with the mandrel, disposed downstream or upstream of the winding member (7) with respect to the direction of advance (fT) of the tubular product being formed on said mandrel. The pressure exerted by the pressure member promotes adhesion of the strips forming the product.
Abstract:
The cutting machine comprises at least one path for the products to be cut (L); at least one device (3, 5, 9) for feed of the products along said path, according to a direction of feed (fL); an element (17) rotating around a main axis of rotation (A-A); on said rotating element, at least one disk-shaped blade (19A, 19B, 19C) rotating around its own axis of rotation (B-B), said blade being provided with alternate translatory motion, substantially parallel to the direction of feed. The disk-shaped blades moves axially in relation to the rotating element during rotation of said rotating element. Moreover, the translatory movement of the disk-shaped blade is controlled so that it moves in the same direction as the direction of feed of the products to be cut when the blade is engaged in said products to follow the feed of the products during cutting. Motion in the opposite direction to the direction of feed of the products is imparted on the blade in a period of time in which the blade is disengaged from said products.
Abstract:
The device comprises at least a continuous movable flexible member (23) carrying a series of contact members (29, 29A, 29B) for the products (R; R1; RN) aligned with one another. A section of the movable flexible member is devoid of said contact members to allow the trimmings (Rc, Rt) to fall. At least a longitudinal supporting element (21) of the products (R; R1, RN), is also provided, parallel to the movable flexible member, the reciprocal position of said flexible member and of said longitudinal element being such that the products advance in contact with the contact members (29, 29A, 29B) of the flexible member and with the longitudinal element. A pusher (11) inserts the series of products with the respective trimmings between the flexible member and the longitudinal supporting member. The flexible member (23) is controlled with a variable speed to carry the section thereof devoid of contact members time by time to the level of the head and tail trimmings (Rc, Rt) of two consecutive series of products.
Abstract translation:所述装置包括至少一个承载用于产品(R; R 1; RN)彼此对准的一系列接触构件(29,29A,29B)的连续可移动的柔性构件(23)。 可移动柔性构件的一部分没有所述接触构件以允许修剪(Rc,Rt)下降。 产品(R; R 1,RN)的至少一个纵向支撑元件(21)也可平行于可移动柔性构件设置,所述柔性构件和所述纵向元件的往复位置使得产品提前 与柔性构件的接触构件(29,29A,29B)和纵向元件接触。 推动器(11)将具有相应装饰的一系列产品插入柔性构件和纵向支撑构件之间。 柔性构件(23)以可变速度进行控制,以将其没有接触构件的部分随时间运送到两个连续系列产品的头部和尾部装饰(Rc,Rt)的水平。
Abstract:
The device comprises: a path (12) for the products, extending from products and trimmings entry position and a product deliver position, the trimmings being removed between said two positions; along said path, a movable flexible member (3) to retain and move the products and the trimmings and an opposite longitudinal fixed element (13) to retain said trimmings (R) extending along said path parallel to a first branch of said flexible member, at a distance from it to allow the products to advance in contact with said flexible member and with said fixed longitudinal element; at least a pusher (15) movable along a feed trajectory, to feed the series of products with the respective trimmings to said path (12). The pusher feeds the products and the trimmings between the flexible member and the fixed longitudinal element. The feed trajectory of the pusher intersects the path of the products between the flexible member (3) and the fixed longitudinal element (13), overlapping in the final stretch the path of the products in contact with said flexible member and said fixed longitudinal element.