Sheet feeding or delivering – Feeding – Multiple supplies
Patent
1993-06-07
1994-06-28
Schacher, Richard A.
Sheet feeding or delivering
Feeding
Multiple supplies
271117, B65H 526
Patent
active
053240154
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a device for feeding sheet material in single sheet form or web form to a downstream processing station in a machine, for example a printer, comprising a plurality of friction roller sets which are each allocated to a sheet material magazine station and are each able to be coupled via an associated clutch to a common drive motor.
The machines in question may be printers which for example are to print different types of paper, or else automatic cash dispensers which are to dispense different banknotes.
2. Description of the Related Art
From German Patent Application 39 07 146 A1 a device for feeding sheet material in single sheet form or web form to a downstream processing station in a machine, for example a printer, comprising a plurality of friction roller sets which are each allocated to a sheet material magazine station and are each able to be coupled via an associated clutch to a common drive motor is already known for a printer having a plurality of paper wells. Each paper well is allocated a friction roller set which is brought into engagement when required in order to convey a sheet through the appertaining feed channel into the sheet transport system leading downstream. The sheet transport system leading downstream comprises a plurality of friction roller pairs continuously coupled to a transport motor. Since the friction roller sets allocated to the individual paper wells should each be operated only singly and intermittently, they cannot be continuously connected for rotation to the drive motor. Consequently, they have their own clutches, each of which is connected to its own drive and which are intermittently operated by a control means. In a machine having a plurality of magazine stations the number of drives required is thereby increased, so that a complicated construction, large overall dimensions and high cost of the machine result.
SUMMARY OF THE INVENTION
The problem underlying the invention is that of providing a device for feeding sheet material in single sheet form or web form to a downstream processing station in a machine, for example a printer, comprising a plurality of friction roller sets which are each allocated to a sheet material magazine station and are each able to be coupled via an associated clutch to a common drive motor which needs a number of drives which is smaller than that in the known solution and is independent of the number of magazine stations provided, so that all in all smaller overall dimensions and lower construction costs are achieved.
According to the invention, this problem is solved by providing clutches each with a clutch actuator which cooperates with a control cam arrangement common to all the actuators, the friction roller sets are each able to be moved, with the aid of an associated shift member, between a pressure position and a liftoff position, the shift members cooperating with a common control cam arrangement, and the control cam arrangements for the actuators and the shift members are combined in a single control cam member which is connected to a drive motor whose direction of rotation is preferably reversible.
The friction roller sets of the individual magazine stations can each be connected selectively to a common drive motor with the aid of mechanical clutches. This motor may for example also be the drive motor for the sheet transport system leading downstream, because whenever sheet material is fed from one of the magazine stations the sheet transport system leading downstream must also always be put into operation. The clutches can be selectively controlled by associated clutch actuators. In order to give the clutch actuators the simplest possible construction and, in accordance with the problem posed, to achieve the greatest possible reduction of overall dimensions and construction costs, according to one feature of the invention provision is made for the clutch actuators of all the friction roller sets to cooperate with a single control cam member common to
REFERENCES:
patent: 4570919 (1986-02-01), Huang
patent: 4744687 (1988-05-01), Nukaya
Schacher Richard A,.
Siemens Aktiengesellschaft
LandOfFree
Device for feeding sheet material to a sheet transport system le does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for feeding sheet material to a sheet transport system le, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for feeding sheet material to a sheet transport system le will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2373091