WO2017111632A1

WO2017111632A1 - Construction of the self-propelled wrapping machine

Info

Publication number: WO2017111632A1
Application number: PCT/PL2015/000213
Authority: WO
Inventors: Leszek ΚĘΡΑ; Tomasz BREWCZAK
Original assignee: R&D Centre Inventor Sp. Z O.O.
Priority date: 2015-12-24
Filing date: 2015-12-30
Publication date: 2017-06-29
Also published as: PL228922B1; PL415542A1

Abstract

To the chassis (1) along its longitude are mounted the following, in sequence: deck (2), wrapping system (3), receiving rolls (4) and a roller conveyor (5). Sliding to the chassis (1) the disc (6) is mounted, propelled by the motors (7), which are protected by construction of chassis frame (1). The bar (15) is attached to the chassis (1) and holds number of longitudinal bores, in which sensors are placed, and to the disc (6) the flexible reference item is mounted.

Description

C ON S TRUC TION O F THE S ELF -PROPELLED WRAPPING MACHINE

[001] The present invention relates to construction of the self-propelled machine for the in-line forage wrapping designated to wrapping series of bales aligned in single row, and in particular for wrapping bales made of compressed green forage.

[002] Wrapping of compressed green forage allows to obtain the green feed for breeding herd as a soilage. Commonly are known and used single bale wrappers. However, aligning bales in a row, face to face enables to wrap any number of bales, simultaneously saving on labor time and the wrapping film. Wrapping of bales in single line is carried out in an open area is dependent upon weather conditions at the time of operation, and should not be carried out during rain fall. [003] From the description of the polish industrial design, for instance No. Rp- 8275, the in-line wrapping machine is known. The wrapping machine comprises of chassis, which carries the deck inclined towards the wrapping system, and following the wrapping system there is a horizontal roll, followed by roller conveyor. The wrapping system comprises of the fixed guide hoop arranged approximately perpendicularly to the deck, on which there is mounted a rotating ring with two film feeders. And, while from the external deck end, there is a disc sliding towards the wrapping system with the use of centrally positioned motor.

[004] In practice there are also known in-line wrapping machines in which disc is slid by means of two, parallel to each other, guides arranged on the sides of the deck. This design permits to obtain better adherence of the bales wrapped, than would be in case with centrally positioned motor, however a big challenge is an uniformly sliding movement of the disc. In order to reduce the impact of such phenomenon, to the chassis, in the extreme disc positions there are applied inductive proximity sensors, also known as limiting sensors, which are sensitive to fixed to the disc reference items, for which commonly are used metal pins. Usually the face of the proximity sensor protrudes above the face of the item to which it is fixed. Such arrangement enables adjustment of the disc position in the extreme disc positions. In practice, during disc slide, it changes its position relative to the chassis so that the distance between the sensor's face and a pin's face varies, and in most adverse cases the pin interferes with the sensor, and its damage results, which ceases the operation of the bale wrapping machine. Distance between displaced disc and wrapping system is greater than bale width, so it can be positioned on the deck with defined tolerance. The in-line wrapping machines are known, amongst others, from the descriptions as following: GB2192172 A, US 5 596 864, or US 6 089 003.

[005] The core concept of the construction of the self-propelled wrapping machine comprising of the deck placed upon chassis and sliding up to the wrapping system, whereas, following the wrapping system there is a roller conveyor, and along the deck there is fitted a sliding disc propelled by two motors attached to the chassis, and along its sides, and whereas there is a reference item attached to the disc on the bar, and to the chassis, at disc extreme movement position the limiting sensor is attached, and it is arranged that to the chassis there is a bar attached and to that bar the limiting sensors are mounted, and between which, at least one auxiliary sensor is placed, and the reference item is flexible, and face of the sensor aligns with the external face of the bar. The bar preferably carries a number of longitudinally placed bores. And flexible reference item preferably comprises of bundle of metallic wires, and in particular a length of interwoven metallic wires. First auxiliary sensor is located in the position relevant to the location of the disc after completing pressing of the current bale to the previous one. In the primary design, the limiting sensor and auxiliary sensor are the induction sensors.

[006] Unexpectedly it appeared that replacing reference item namely rigid pin with flexible item, in addition to amending the position of the sensors to within the bar, permitted to reduce the number of failures and downtime due to repairs of the wrapping machines, and impact of each failure could be multiplied by accompanying deterioration of weather conditions.

[007] Construction of the self-propelled wrapping machine is shown in the particular embodiment on the sketch drawing, for which:

• fig.l is a perspective view of the in-line wrapping machine, from deck side;

• fig. 2. is a magnified view of the item "A" from figure 1;

• fig. 3 is a perspective view of the in-line wrapping machine from the roller conveyor end;

[008] Figure 1 shows self-propelled machine for the in-line wrapping in perspective view, ready for operation. To the chassis, along its length the following items are mounted, in order: the deck (2), wrapping system (3), receiving rolls (4) and roller conveyor (5). In sliding mode, to the chassis, there is the disc (6) mounted, powered by motors (7), protected by construction of chassis frame (1). The wrapping system (3) comprises of the rigid hoop (8) fixed to the chassis (1) around which the rotating ring (9) circulates propelled by a driving wheel (10). To the side of the rotating ring (9) there are attached two film dispensers. [009] The Figure 2 shows magnified view of the detailed item "A" denoted on the Figure 1. To the side of the disc (6) the ledge (13) is attached and in turn the length of interwoven metallic wire (14) is attached to it, which terminal is located adjacent to the bar (15). The bar (15) is attached to the chassis (1) and carries a range of longitudinal bores (16a, 16b, ...16x), and whereas in the first longitudinal bore (16a) there is a first limiting sensor (17a) placed, and in a second longitudinal bore (16b) there is the auxiliary sensor (18) placed. Second limiting sensor (17b) is mounted from the side of wrapping system (3), however is not visible on the drawing. The face of the first limiting sensor (17a) and the auxiliary sensor (18) are in line with external plane (19) of the bar (15) and therefore even when the face of the ledge (13) will interfere with the bar (15), it will not damage the sensors (17a, 17b, 18) planted in it. And the longitudinal bores (16a, 16b, ... I6x) allow for the placement of the particular sensor relatively to the size and quality of the bale to be wrapped, and also for placement of additional auxiliary sensors, which will follow disc (6) displacement during its operation.

[010] Figure 3 shows a second, the perspective view of the wrapping machine. To the chassis (1), along its length the following are mounted: the deck (2), wrapping system (3), receiving rollers (4) and a roller conveyor (5). The deck (2) has shape similar to spout, and is limited with tubular longitudinal supports (20) aligned for operation with wrapping system (3) and supporting bales during wrapping. The objective of the receiving rollers (4) and roller conveyor (5), which one end is placed on the ground during operation is gentle discharge on to the ground of the sequentially wrapped bales, and simultaneously inflicting travel forward of the wrapping machine. The roller conveyor (5) transportation position is approximately vertical.

Claims

1. Construction of the self-propelled wrapping machine comprising of the deck placed on the chassis and approaching the wrapping system, and whereas following the wrapping system there is a roller conveyor, and along the deck there is a sliding disc propelled by two motors mounted sideways, along the chassis, and whereas to the disc on the bar there is fixed a reference item, and to the chassis, in extreme disc positions the limiting sensor is attached, significant with that, to the chassis (1) the bar (15) is attached, and within it the limiting sensors (17a, 17b) are placed, between which at least one auxiliary sensor (18) is placed, and the reference item is flexible, and the face of the sensor (17a, 17b, 18) aligns with the outer plane (19) of the bar (15).

2. A machine according to Claim 1 is significant with that, the bar (15) contains the number of longitudinal bores (16a, 16b, ...16x).

3. A machine according to the Claim 1 significant with that, the reference item comprises of bunch of interwoven metal wires.

4. A machine according to the Claim 1 or 3 significant with that, the reference item comprises of certain length of interwoven metal wires (14).

5. A machine according to the Claim 1 significant with that, the limiting sensor and the auxiliary sensor comprises of induction sensors.

6. A machine according to the Claim 1 significant with that, the first auxiliary sensor (18) is placed in the position relevant to the location of the disc after pressing a new bale to the former one.