DE631800C - Device for trimming the edges of wallpaper strips - Google Patents

Description

Device for trimming the edges of wallpaper strips for trimming the edges of wallpaper strips have already become known, namely with these, the roll of wallpaper to be unwound is placed in a trough or on one Stick inserted and held between laterally arranged guide discs. It is then unwound, inserted between the cutting knife and then again rolled up. As a result of the friction caused by the large contact surface occurs but here a more or less strong pull of the wallpaper strip from the roll to the Cutting point on, and to compensate for the lateral deviations of each Wrap layers required backward movement of the roll of wallpaper in the axial direction is missing in the known devices. It is known that the one carrying the roll of wallpaper To store the rod in hangers. This creates a pendulum movement; but because the roll, following the law of gravity, always returns to its original position strives back, a lateral pull is exerted on the running wallpaper strip. The consequence of this is a tearing or tearing of thin, soft wallpaper strips and a uneven oblique cut. It is also known that the finished trimmed Roll up wallpaper on a winding rod or by friction on and between rollers. Here, too, a pull is caused, which means that thin wallpaper can easily tear.

According to the invention, these inconveniences are to be eliminated by that to the trough-shaped holding arms freely receiving the roll of wallpaper, in which the roll is mounted on rolls arranged perpendicular to the axis of the roll of wallpaper is, followed by an upwardly extending convex guideway over which an endless driven guide means runs, and that behind the to the guideway subsequent circular knives can be driven approximately at the height of the upper circular knife Friction rollers are arranged, below which an upwardly extending oblique Run level adjoins. So that the roll of wallpaper to be unwound is management and As smoothly as possible free and in the respective conditional position, stored persistently and can - adapt to each side pull. The finished trimmed wallpaper is on an inclined walking plane as a result of one's own rolling ability and by drivable Friction rollers rolled up loosely without pressure or tension.

The drawing illustrates the invention by way of example. Fig. I is a schematic representation of the device, Fig.2 illustrates the adjustable Guide track, and Fig.3 is a plan view of the device without followers.

The roll of wallpaper to be cut off becomes coreless and without any guidance freely arranged on trough-shaped holding arms b perpendicular to the axis of the roll of wallpaper Roller bearings c supported. The roll of wallpaper can be placed on these bearings in its axial direction Slide back and forth as far as needed to adjust to the fixed Guideway during the unwinding of the wallpaper web and their running between the guide strips e and to compensate for existing inequalities individual winding layers of the wallpaper roll is required.

The guideway d has a proof. convex ones extending above Form in order to '' gently guide the wallpaper strip over it 'and around a to create the longest possible guideway. This also means that the Wallpaper in the guide device impossible. The one on their front sides with guide strips provided guide track d is divided transversely .und can be through a threaded spindle Adjust f to the required wallpaper width while using a fine-thread spindle g moveable micrometer setting device adjusts the guideway to the cutting width is adjustable. The fine-thread spindle g is in the frame wall bearing w with a mating thread and stored continuously in the frame wall bearing w1 and carries the guideway. In order to avoid any tension on the wallpaper strip, it also runs over the guide track and around the lower driven draw roller h an endless follower! for the loosely lying Wallpaper. This makes it possible to also-receive-. to cut the most delicate and thin wallpaper.

The pulling device consists of the manually or mechanically driven one Draw roller h and the upper one positioned vertically above it. Counter pressure roller k. As a counter pressure medium Rollers or balls can also be used. On the lower roll h is the lower one S.chneidmesserl attached, while the bearings for the gear drive inevitably driven upper cutting knife m backwards. are relocated. Through this arrangement any pulling action of the cutting device is canceled and therefore an unconditional one. Straight running of the wallpaper is achieved. The cut wallpaper a1 slides loosely on inclined arms. and due to its own rollability: the Wallpaper and through those located behind the Zugvialzenh, k approximately at the level of the upper cutting area drivable rollers o in a known manner, tension-free and gently wound, while the cut edge of the wallpaper falls to the floor.

To make the cutter ineffective when rolling wallpaper rolls To do this, the guideway is set to the side until the wallpaper is outside of the cutting area the cutting knife is running.

The fact that the wallpaper during the entire work process, without tension and pulling effect inevitably run straight through the longest possible guideway a completely straight and clean cut is achieved.

Claims (1)

PATnNT CLAIM Device for trimming the edges of wallpaper strips, in which the web lying in a trough is unwound from a roll, between the cutting knife is introduced and then wound up again, characterized in that to the trough-shaped retaining arms freely receiving the wallpaper rail, in which the Roll is mounted on rolls arranged perpendicular to the axis of the roll of wallpaper, an upwardly extending convex guideway is connected, over which an endless driven guide means runs, and that behind the adjoining the guide track Circular knives approximately at the height of the upper circular knife, drivable pulleys (o) are arranged, below which a .sich upwardly extending inclined running plane joins.