Back to results
US 2020/0331184 A1Published application
Method and device for producing a cylindrical body
AssigneeArno Friedrichs Hartmetall GmbH & Co. KG
InventorArno Friedrichs
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeArno Friedrichs Hartmetall GmbH & Co. KG
InventorArno Friedrichs
Estimating the term…
The invention relates to a method and a device for producing a circular-cylindrical body (4) which consists of a plastic compound and which has at least one helical inner recess that runs in the interior of the body. The method has the following steps: producing a circular-cylindrical body (4), which consists of a plastic compound and which has at least one linear inner recess that runs in the interior of the body, by means of an extrusion molding die (1), discharging the circular-cylindrical body (4) out of the extrusion molding die (1) via a twisting section (7) onto a holding and transporting device (2) which is designed to hold and transport the circular-cylindrical body (4) and which can be rotated about the longitudinal axis of the holding and transporting device, twisting the circular-cylindrical body (4) on the twisting section (7) in order to form the at least one helical inner recess by rotating the holding and transporting device (2) together with the circular-cylindrical body being held and transported in the holding and transporting device, and discharging the circular-cylindrical body (4), which has at least one helical inner recess running in the interior of the body, out of the holding and transporting device (2) onto a storage device (3).
A method for producing a circular-cylindrical body made of plastics mass, which comprises at least one helical internal recess that extends thereinside, comprising the following steps:
The method as per any one of the preceding claims, characterized in that the conveyor belts (2e, 2f) are mounted on idler pulleys (2a, 2b, 2c, 2d), the running speed of which is set by the feed motor (5) in order to move the circular-cylindrical body (4).
The method as per any one of the preceding claims, characterized in that the feed speed and the rotational speed of the retaining and conveying device (2) is set by a control unit (10), which supplies control signals (st1, st2) to the feed motor (5) and the torque motor (6).
The method as per any one of the preceding claims, characterized in that the speed at which the circular-cylindrical body (4) is pressed out of the extrusion die (1) is measured by means of a speed sensor (14) and/or in that the diameter of the circular-cylindrical body that is discharged from the extrusion die is measured by means of a diameter sensor (15).
The method as per any one of the preceding claims, characterized in that the circular-cylindrical body (4) is cut to a preset length by means of a cutting device (11), the cutting procedure taking place between the extrusion die (1) and the rotary retaining and conveying device (2) or between the rotary retaining and conveying device (2) and the deposition device (3).
A device for producing a circular-cylindrical body made of plastics mass, which comprises at least one helical recess that extends thereinside, comprising
Dependencies are inferred from the claim text.