Cutting – Tool with either work holder or means to hold work supply – Rotatable wound package supply
Patent
1998-01-12
1999-12-28
Rachuba, M.
Cutting
Tool with either work holder or means to hold work supply
Rotatable wound package supply
83650, B26D 700
Patent
active
060066423
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to the technical field of machines for dispensing and cutting strips of coiled material made of wadding or other material in order to ensure the dispensing of paper hand-wipes, general-purpose paper wipes, napkins, handkerchiefs and other articles. In particular, the invention relates to twin-roll dispensing machines, i.e. a machine that includes a first dispensing roll that is being unreeled and a spare roll that can be transferred to replace the former when the first roll is exhausted or nearly exhausted.
The Applicant has already developed such twin-roll machines, especially in French Patent. In this type of twin-roll machine, the reels of material have end fittings that are inserted into the reel holder, said end fittings being designed with a protruding stub capable of being used as a means to guide the reels along vertical slide rails formed on the body of the lateral sides of the machine as shown in U.S. Pat. No. 2,364,838. According to U.S. Pat. No. 2,599,726, the stubs are gripped by an articulated connecting-rod transfer mechanism capable of allowing the spare roll to be fitted instead of the roll that is nearly completely unwound.
With this technique, the reels of material include the reel holders and associated end fitting which permit and facilitate the actual transfer operation.
However, it appears that a very large number of reels of material do not have any end fitting and, as a result, as far as the Applicant is aware, there is no twin-roll machine for these types of reels. The difficulty is the ability to control a very large number of parameters including, in particular, the weight of the spare reel which, as it drops down into the bottom of the machine, is likely to exert a relatively large force. Consequently, this force must be controlled if one wishes to prevent the machine from being damaged at an early stage.
SUMMARY OF THE INVENTION
The object sought after by the invention is therefore to design a twin-roll dispensing machine for strips of paper that includes a spare roll where the reels do not have any end fitting and which ensures reliable, prolonged operation without damage to the various components thanks to complete control of the operation of transferring the spare roll into position to replace the roll that is in use e.g. a (service roll).
Another object sought after by the invention is to design a machine that can be adapted to dispense any type of reel of paper.
Another object sought after is for the machine to be capable of operating with both automatic and semi-automatic cutting.
Another object sought after by the invention is to produce a machine which, despite its complex operation, is straightforward and inexpensive to produce and is of a design which allowed its various components to be assembled without using any special tool.
Another object sought after by the invention is to produce removable lateral sides which made it possible to manufacture the various components of the machine by moulding them and allowed their quick assembly.
According to a first aspect of the invention, the dispensing machine for strips of called wadding paper using automatic or semi-automatic traction of the twin-roll type including a service roll and a spare roll comprising, in a housing accommodating a protective cover, lateral sides devised to accommodate, in the upper part, the spare roll, in the middle part, the service roll and in the lower part, a drum associated with a cutting device and a pressure component that presses against the drum and between which the strip of paper to be cut is inserted, and is distinctive in that the sides are devised in the form of flat plates and are arranged from the top towards the bottom with a first upper area to accommodate the spare roll, a middle area to retain the service roll and a lower area to accommodate the drum and associated cutting device, the separation between these areas being obtained by a separately mounted profiled plate that ensures removal of the service roll when it is used u
REFERENCES:
patent: 3160047 (1964-12-01), Malloy et al.
patent: 3183752 (1965-05-01), Mews
patent: 4427144 (1984-01-01), Macgrory et al.
patent: 4432261 (1984-02-01), DeLuca
patent: 4844361 (1989-07-01), Granger
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