초록 ▼

A device and a method for applying elastic film sleeves to containers, including a plurality of revolving stretching units for receiving and stretching the film sleeves so that the containers can be slid into the film sleeves. The stretching units include spreading fingers driven by servo motors, su

A device and a method for applying elastic film sleeves to containers, including a plurality of revolving stretching units for receiving and stretching the film sleeves so that the containers can be slid into the film sleeves. The stretching units include spreading fingers driven by servo motors, such that the stretching of the film sleeves can be optimized independently of a circulation speed of the stretching units and flexibly adapted to different film types and container sizes.

대표청구항 ▼

1. A device for applying elastic film sleeves to containers, comprising: a plurality of revolving stretching units for receiving and stretching the film sleeves in such a way that the containers can be slid into the film sleeves, each of the stretching units comprising a container area for receiving

1. A device for applying elastic film sleeves to containers, comprising: a plurality of revolving stretching units for receiving and stretching the film sleeves in such a way that the containers can be slid into the film sleeves, each of the stretching units comprising a container area for receiving a container as well as a plurality of movable spreading fingers that are distributed around the circumference of the container area and that are for stretching the film sleeves away from one another, and, for producing at least a relative movement of the film sleeve and container with respect to one another in a radial direction, at least one servo motor drive is provided per stretching unit, the at least one servo motor driving the spreading fingers;at least one label dispenser for equipping the stretching units with the film sleeves; anda control device for activating the at least one servo motor in such a way that the spreading fingers are moved between an inner receiving position (S1) for receiving the film sleeves and an outer spreading position (S2) for spreading the film sleeves, and for coordinating the time sequence of a spreading movement of the spreading fingers with the transfer of the label sleeves from the label dispenser to the stretching units. 2. The device according to claim 1, and a control device for activating the at least one servo motor in such a way that at least one of a switching-on time, a positioning speed, and a combination thereof of the at least one servo motor can be adjusted with the help of the control device. 3. The device according to claim 2, wherein the adjustment of the at least one servo motor with the help of the control device is to move the spreading fingers away from one another. 4. The device according to claim 1, and positioning units revolving below the stretching units for positioning the containers in the container areas. 5. The device according to claim 4, wherein an upper end position of the positioning units can be adjusted for aligning the containers with respect to the label sleeves. 6. The device according to claim 5, wherein the upper end position is adjusted in steps of not more than 1 mm. 7. The device according to claim 4, and wherein each of the positioning units comprises lifting devices driven by a servo motor for lifting the containers into the container areas. 8. The device according to claim 1, and removal units revolving above the stretching units for removing the containers from the container areas. 9. The device according to claim 8, and wherein each of the removal units comprises lifting devices driven by a servo motor for lifting the containers out of the container areas. 10. The device according to claim 8, and revolving valve units for switching in an alternating manner a negative pressure or a positive pressure to the spreading fingers in order to suction in the film sleeves or repel them from the spreading fingers, wherein the valve units are formed to supply the negative pressure or the positive pressure to the stretching units independently of one another. 11. The device according to claim 10, wherein the switching times of one of the positive pressure, the negative pressure, and a combination thereof are adjustable. 12. The device according to claim 11, and wherein a switching-on time of the negative pressure can be synchronized with the activation of the at least one servo motor of the assigned stretching unit. 13. The device according to claim 8, wherein a switching-on time of the positive pressure can be synchronized with the removal units. 14. The device according to claim 10, wherein the valve units comprise Venturi nozzles for producing the negative pressure. 15. The device according to claim 1, and an exchangeable fitting section is provided on each stretching unit and wherein the fitting section comprises at least the stretching fingers and a guide plate for guiding the stretching fingers. 16. The device according to claim 1, and exchangeable adapter pieces are provided on the outer sides of the spreading fingers. 17. The device according to claim 16, and wherein the adapter pieces adapt the spreading fingers to film sleeves of the stipulated length. 18. The device according to claim 1, and guide plates are provided on the stretching units in order to counteract a rotation of the film sleeves with respect to the stretching units. 19. A method for applying elastic film sleeves to containers with a device according to claim 1, comprising: a) Receiving the film sleeves with the stretching units;b) Stretching the film sleeves in such a way that the containers can be slid into the film sleeves; andc) Sliding the containers into the film sleeves, wherein the spreading fingers are moved in at least one of the Steps a) to c) depending on an adjustable time interval, the beginning of which is coupled to a time of the dispensing of the film sleeves. 20. The method according to claim 19, wherein Step a) comprises an alignment Step a1) in which the spreading fingers are moved away from one another and then back towards one another at least one time in order to align the position of the film sleeves with respect to the spreading fingers. 21. The device according to claim 1, and wherein one of the inner receiving positions, the outer spreading position, and a combination thereof can be adjusted with the help of the control device.