Presses – With additional treatment of material – Winding or folding sheet – web or strand
Patent
1986-06-11
1987-05-05
Rimrodt, Louis K.
Presses
With additional treatment of material
Winding or folding sheet, web or strand
56341, A01F 1500, A01F 1508
Patent
active
046622756
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a spherical baling press for producing large bales composed of harvested agricultural products. In such a press a folding pressing area, consisting of two pressing area halves, is borded on the periphery by press and conveyor cylinders. These cylinders are positioned and propelled in the housing walls which border the front side of the pressing area, whereby two neighboring press cylinders allow room for a product feed slot. The feed slot extends across the width of the machinery and the rotational axes of the press and conveyor cylinders are located on a circle. The center of this circle is the theoretical rotational axis of the pressing area.
STATE OF THE ART
In the case of known spherical baling presses of this type used today, it has repeatedly been observed that after initial rotation, the large bales being formed are brought to a standstill especially if the product being baled is brittle straw, such as corn stalks. As a result, additional product can no longer be fed and, secondly, the partially or completely formed bales can not be tied with twine. The tractor driver must, therefore, stop, open the press, and pull out the brittle straw (for example, manually) found in the pressing area. The resulting need to stop is very time consuming. Another disadvantage of the known spherical baling presses can be found in the fact that product separates near the entry slot in the case of bales consisting of short blades and stalks and the product falls down. In the case of presses in which the area between the pick-up drum and the press cylinder bordering the entry slot from below is bridged by a straight metal tray, this product falls onto the metal tray and remains there if the pick-up drum does not convey product for a short period of time. When product is once again fed, the materials often congest in front of the entry slot.
A large spherical baling press (see U.S. Pat. No. 4,345,421) is known in which the pressing area profile has an elliptical rather than an essentially round shape and the major axis is vertically positioned. The press is supposed to create a bale with a higher degree of rigidity. However, in order to form a firm round bale, constant high forces must be transferred from the cylinders at the periphery of the bales to the bales, and this is not possible with cylinders which cannot come into contact with the bale.
SUMMARY OF THE INVENTION
The problem facing the present invention, therefore, is to design a spherical baling press of the afore-described type in such a way that the requirements placed on it are satisfactorily fulfilled with respect to the unproblematic formation of bales, even in the case of brittle blades and stalks. According to the invention, this is achieved by the fact that the surface areas facing the pressing area of the press cylinders located in front of the product feed slot--when viewed in the direction of bale rotation--have a slightly smaller clearance to the theoretical rotational axis of the pressing area than the surface areas of the other conveyer elements. As a result, the pressing area is partially narrowed whereby the bale is in part compressed more prior to product feed.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is described below using an embodiment and a single, detailed diagram.
The diagram displays a schematic cross-section through the functionally relevant rear area of a preferred embodiment of a large baling press.
DETAILED DESCRIPTION OF THE INVENTION
The number 1 designates the frame of the large baling press which moves on wheels. Walls are placed on the frame,1, which are separated into two parts. The housing, 4, is hinged onto part 3 of the walls which is rigidly connected to the frame, 1. The press cylinders which are positioned and propelled in the hinged housing part, 4, and which are positioned on a common radius with their rotational axes--seen from the theoretical rotational axis, 15, of the pressing area--are designated with the numbers 5 to 12. The press cylinders, 13, 14
REFERENCES:
patent: 4345421 (1982-08-01), Schwalenberg et al.
patent: 4566380 (1986-01-01), Clostermeyer et al.
patent: 4580398 (1986-04-01), Bruer et al.
Claas OHG
Rimrodt Louis K.
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