DE202019100151U1 - Storage of a supply roll for a film - Google Patents

Abstract

Storage of a supply roll (2) for a film (3), which is wound on a hollow, tubular core (4) having an inner and an outer diameter, wherein in each case a clamping cone (1) at each end of the supply roll (2 ) is arranged and the storage of the supply roll (2) on a shaft (5),
wherein the clamping cone (1) consists of three successive sections, which are formed as a retaining cone (101), a circumferential collar (102) and a bearing journal (103),
wherein the retaining cone (101) receives the core (4) of the supply roll (2), and the circumferential collar (102) limits the penetration of the retaining cone (101) into the core (4), wherein the circumferential collar (102) in the direction of retaining cone (101) has a circumferential groove (105), and
the bearing pin (103) of the attachment of the supply roll (2) on the shaft (5) is used.

Description

The present invention relates to the storage of a supply roll for a protective film, in particular the invention relates to a clamping cone for fixing receiving film rolls, foam rollers and others with different cores on a dedicated shaft.

Representative film rolls are to be considered here. Such film rolls with or without perforation are needed for example for applying protective films on a surface of a component. The film rolls have a hollow, tubular cardboard or plastic core. On this core, the film is wound up. The core with the protective film is pushed onto a shaft and from there the protective film is unrolled over one or more deflection rollers and brought onto the component. Since the cores can have a different inner diameter, a clamping cone is needed, which is positioned at the ends of the tubular core.

DD 62577 B1 discloses a spreadable paper roll cone which serves to clamp the paper rolls in the roll carrier of a rotary printing press. The paper roll cone consists of a hollow trunnion with an in this located displaceable but non-rotatable control rod. On the control rod spread spreader are under the action of compression springs and press into the hollow core of the paper roll.

When cutting and separating film rolls or supply rolls with a hollow-cylindrical cardboard or plastic core, occasionally unclean cut edges occur at the core. This can only be avoided to a limited extent. As a result, a clean positioning of the supply roll on the shaft is not possible and there is an imbalance in the further processing, for example, when rolling the film.

Presentation of the invention

The invention has for its object to enable an imbalance-free storage of a supply roll by simple means.

The object is achieved by the features of the main claim, wherein the dependent claims describe further embodiments.

According to the invention, the storage of a supply roll for a film, which is wound on a hollow, tubular core, takes place on a shaft by a respective clamping cone at each end of the supply roll. The core of the supply roll has an inner and an outer diameter. The clamping cone consists of three successive sections, which are designed as a holding cone, a circumferential collar and a journal. The holding cone corresponds in its diameter with the inner diameter of the core of the supply roll and receives it. The circumferential collar limits the penetration of the retaining cone into the core and has a circumferential groove in the direction of the retaining cone. The bearing pin serves to attach the supply roll on the shaft.

For an essential embodiment, the collar has a larger diameter than the outer diameter of the core of the supply roll.

For an alternative essential embodiment, the collar has a diameter which corresponds to the diameter of the supply roll.

In a further essential embodiment, the circumferential groove is 1 to 5 mm, preferably 2 to 4 mm wide.

In a further embodiment, a screw threaded bore is introduced into the bearing journal, which receives a threaded bolt for fixing the shaft.

By these simple measures, in particular by the circumferential groove in the collar of the clamping cone, the supply roll is positioned clean and can, for example, be smoothly placed on the component to be applied.

list of figures

• 1 eine eingespannte Vorratsrolle auf einer Welle in einer perspektivischen Darstellung,
• 2 die eingespannte Vorratsrolle auf einer Welle in einer Seitenansicht,
• 3 einen erfindungsgemäßen Spannkonus in einer Seitenansicht und
• 4 den erfindungsgemäßen Spannkonus in einer perspektivischen Darstellung.

The invention will be explained with reference to an embodiment. Show this

• 1 a clamped supply roll on a shaft in a perspective view,
• 2 the clamped supply roll on a shaft in a side view,
• 3 a clamping cone according to the invention in a side view and
• 4 the clamping cone according to the invention in a perspective view.

A supply roll 2 for a slide 3 as they are in the 1 and 2 is shown, usually has a hollow, tubular cardboard or plastic core, further than the core 4 designated. To the core 4 with the foil 3 on a wave 5 being able to store it clean becomes the core 4 on two clamping cones 1 stored, which at the ends of the tubular core 4 be positioned. For different cores 4 with different inner diameters can different, corresponding clamping cones 1 or with a cone-shaped section provided clamping cones 1 be used. This is the supply roll 2 clamped and on the shaft 5 ready for unwinding. In 2 is the clamped supply roll on the shaft 5 seen in a side view with hidden lines.

3 and 4 show a clamping cone according to the invention 1 , which is divided into three contiguous and interconnected, usually made in one piece, sections. The first section serves to accommodate the supply roll 2 and will continue as a holding cone 101 designated. The second section is a circumferential collar 102 , which directly to the holding cone 101 follows and the penetration of the holding cone 101 in the core 4 limited. The surrounding collar 102 has a larger diameter than the holding cone 101 , Advantageously, corresponds to the height of the collar 102 from the holding cone 101 seen from the thickness of the core 4 the supply roll 2 , The collar 102 but may also have a diameter which of the supply roll 2 corresponds, if this makes sense technologically. The third section is a journal 103 , which directly to the collar 102 borders. The journal 103 serves to attach the supply roll 2 on the wave 5 , Therefore, in the journals 103 for example, a screw threaded hole 104 introduced, which is a threaded bolt 6 receives. Through the threaded bolt 6 becomes the clamping cone 1 fixed on the shaft. For fastening the supply roll 2 on the wave 5 are two clamping cones 1 , at each end of the supply roll 2 one, necessary.

The surrounding collar 102 has in the direction of the retaining cone 101 a circumferential groove 105 , The groove 105 is about 1 to 5mm, in an advantageous way 2 up to 4mm, wide. An unclean cutting edge of the core 4 the supply roll 2 disappears into the groove 105 so that the supply roll 2 can be positioned clean.

Since the above-described storage of a supply roll for a film is an exemplary embodiment, it can be modified in a customary manner by a person skilled in the art to a large extent, without departing from the scope of the invention. In particular, other fixing recordings of film rolls, paper rolls, foam rolls and others with different cores on a shaft provided for this purpose are also included. Further, the use of the indefinite article "on" does not preclude that the features in question may also be duplicated.

LIST OF REFERENCE NUMBERS

1

Spannkonus

101

holding cone

102

collar

103

pivot

104

screw threaded bore

105

circumferential groove

2

supply roll

3

foil

4

core

5

wave

6

threaded bolt

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DD 62577 B1 [0003]

Claims (5)

Storage of a supply roll (2) for a film (3), which is wound on a hollow, tubular core (4) having an inner and an outer diameter, wherein in each case a clamping cone (1) at each end of the supply roll (2 ) is arranged and the storage of the supply roll (2) on a shaft (5), wherein the clamping cone (1) consists of three successive sections, which are formed as a retaining cone (101), a circumferential collar (102) and a bearing journal (103), wherein the retaining cone (101) receives the core (4) of the supply roll (2), and the circumferential collar (102) limits the penetration of the retaining cone (101) into the core (4), wherein the circumferential collar (102) in the direction of retaining cone (101) has a circumferential groove (105), and the bearing pin (103) of the attachment of the supply roll (2) on the shaft (5) is used. Storage of a supply roll (2) after Claim 1 , characterized in that the collar (102) has a larger diameter than the outer diameter of the core (4) of the supply roll (2). Storage of a supply roll (2) after Claim 1 , characterized in that the collar (102) has a diameter which corresponds to the diameter of the supply roll (2). Storage of a supply roll (2) after Claim 1 . 2 or 3 , characterized in that the circumferential groove (105) 1 to 5mm, preferably 2 to 4mm wide. Storage of a supply roll (2) according to one of the preceding claims, characterized in that in the bearing journal (103) a Schraubgewindebohrung (104) is introduced, which receives a threaded bolt (6) for fixing the shaft (5).

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