System for adjusting the position between a waste ejector and a cutting cylinder

A system for adjusting relative positions between a waste ejector and a rotating cutting cylinder in a rotary strip cutting machine,

• the cylinder having an axis of rotation, an outer surface and at least one needle that projects radially from the outer surface of the cylinder for retaining cutting waste,
• the ejector having a rectilinear part that extends parallel to the axis of rotation of the cylinder and is traversed by at least one slot through which the needle passes as the cylinder rotates, the system being comprised of:
• a supporting device, the supporting device including:
• a first part securable to a frame of the rotary cutting machine;
• a second part secured to the ejector and connected to the first part by a guide member that defines a transverse trajectory for relative movement between the first and second parts along a line that intersects the cylinder and permits adjustment of the position of an edge of the ejector relative to the surface of the cylinder;
• and
• an adjusting device that permits the second part to be positioned along the transverse trajectory,
• the guide member including an elastic element that prestresses the second part relative to the adjusting device;
• the adjusting device is comprised of a rod having axially spaced first and second screwthreadings of different pitch respectively engaging in two axially aligned internal tappings that extend in the direction of the transverse trajectory and are respectively secured to the first and second parts of the supporting device.

A system for adjusting relative positions between a waste ejector and a rotating cutting cylinder in a rotary strip cutting machine,

• the cylinder having an axes of rotation, an outer surface and at least one needle that projects radially from the outer surface of the cylinder for retaining cutting waste,
• the ejector having a rectilinear part that extends parallel to the axis of rotation of the cylinder and is traversed by at least one slot through which the needle passes as the cylinder rotates, the system being comprised of:
• a supporting device, the supporting device including:
• a first part securable to a frame of the rotary cutting machine;
• a second part secured to the ejector and connected to the first part by a guide member that defines a transverse trajectory for relative movement between the first and second parts along a line that intersects the cylinder and permits adjustment of the position of an edge of the ejector relative to the surface of the cylinder;
• and
• an adjusting device that permits the second part to be positioned along the transverse trajectory,
• the guide member including an elastic element that prestresses the second part relative to the adjusting device,
• the first part of the supporting device is connected to the frame of the rotary cutting machine by a support flange engaging a cross-member parallel to the axis of rotation of the cylinder, and further including a locking device that fixes the supporting device along the cross-member.

A rotary strip cutting machine including:

• a first and a second rotating cutting cylinder,
• the first cylinder having an axis of rotation, an outer surface and at least one needle that projects radially from the outer surface of the cylinder for retaining cutting waste,
• a waste ejector having a rectilinear part that extends parallel to the axis of rotation of the first cylinder and is traversed by at least one slot through which the needle passes as the first cylinder rotates,
• a supporting device for positioning the waste ejector relative to the first cylinder, the supporting device including:
• a first part secured to a frame of the rotary cutting machine;
• a second part secured to the waste ejector and connected to the first part by a guide member that defines a transverse trajectory for relative movement between the first and second parts along a line that intersects the first cylinder and permits adjustment of the position of an edge of the ejector relative to the surface of the first cylinder;
• an adjusting device that permits the second part to be positioned along the transverse trajectory,
• the guide member including an elastic element that prestresses the second part relative to the adjusting device.