MXPA01006179A - Rotary conveyor tine stripper - Google Patents

Abstract

A stripper for lifting crop off flat rigid tines of a rotary conveyor is molded of ultra high molecular weight polyethylene. The stripper is oval-shaped in side view and is constructed of identical halves which each include a pair of spaced apart, parallel side walls that have marginal portions defined by rims which have a thickness greater than that of the side walls. An intermediate, concave wall extends between and is joined to the bases of the rims, which have a height measured from the respective base that is approximately twice the thickness of the associated side walls.

Description

IMPROVED ROTARY CONVEYOR TIP SEPARATOR The present invention relates to a rotary conveyor for a long round packer and more specifically refers to a separator for the rigid tips of a conveyor.

BACKGROUND OF THE INVENTION The United States patent application d America series No. 09 / 436,329, filed November 8, 1999, discloses a rotary conveyor including rigid tips that are formed of a flat plate, and with the tips each rotating between a pair of oval shaped plastic spacers, closely separated which act to separate the material.1 from the tips. These plastic separators are not completely satisfactory because their life of use is not as long as it is desired and also because when they are separated they are used excessively, their profile changes to such a degree that a cutting action occurs between the separator and the tips. of a more desirable scissor action.

Synthesis of the invention In accordance with the present invention, it provides a spacer design which represents a better one over the above-mentioned known spacers.

An object of the invention is to provide a plastic separator which has a greatly improved life of use compared to that of the prior art separator.

A more specific object of the invention is to provide a spacer constructed to have one or more of the characteristics of: (a) being of increased cross-section in high-use areas, (b) being concave in the cross-section for guide or channel cut before the cut between the packing chamber, (c) is built of a plastic having a relatively long life, and (d) be constructed of identical halves that can be inverted to double life of the halves.

These and other objects may be apparent after reading the description that follows along with the attached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a front elevational view, a schematic showing a wide pick-up together with a rotating conveyor with which the separators constructed in accordance with the present invention are associated.

Figure 2 is an elevated view of the left side of the rotating conveyor.

Figure 3 is a perspective view of the upper half of the separator.

Figure 4 is a side elevational view of the half of the separator shown in Figure 2.

Figure 5 is a side elevational view of the half of the separator shown in Figure 4.

Figure 6 is a left end view of the middle of the separator shown in Figure 4.

Figure 7 is an enlarged vertical cross-sectional view taken on line 7-7 of Figure 4.

Description of the Preferred Incorporation Referring now to Fig. 1, there is shown a trimming conveyor arrangement 10 which, for example is used as part of a packer for making large cylindrical bales, the conveyor arrangement 10 functions to pick up to supply trimming hay to the bale chamber. packaged packer The transport arrangement 10 includes a picker 12 d of a conventional structure that includes a plurality of spring toothed tips (not shown) which are rotated about a transverse axis so as to lift hay trimming material from the ground and supply it to the user. rotary conveyor 14. The rotary conveyor 14 e supplied with left and right hand trimming centering bits 16 and 18, respectively, which narrow the trimming current, for example, to the width of the packed chamber. Referring also to Figure 2, it can be seen that a plurality of rigid tip structures 22 are mounted on the shaft 20 between the bits 16 and 18. Each of the tip structures 22 is in the form of a plac configured to define a pair of diametrically opposed tips 24 and 26 that have arched front edges. A plurality of oval-shaped tip separators 28 are mounted in a separate side-by-side relationship to define the respective slots for the passage of the tips 26 and 28 of the respective tip structures 22 during rotation of the ej 20.

The separators 28 are each constructed of lower and upper halves 30 and 32. Preferably, the halves of the separator 30 and 32 are identical and molded of ultra high molecular weight polyethylene (UHM), such material has a high wear tolerance. A support wall d separator 32 extends transversely backward of rotating conveyor 14 and terminates in a plurality of transversely spaced fins 36 that include forward and downwardly inclined mounting portions 38 which are located approximately midway between the two positions. and three of clock around the axis 20 of the rotary transport 14. Each fin mounting part 38 is received in a slot defined in the back of each of the respective spacers 28 by the upper lower halves 30 and 32.

Referring also to FIGS. 3 to 7, there is shown half of identical top 30. From this, it may be understood that the halves 30 and 32 each are provided with or mounting hole 40, with the holes aligned and they receive a mounting bolt (not shown) which embrace the separator halves 30 and 32 together in the mounting portion d fin 38. The forward ends of the separator halves 3 and 32 each include a pair of projections in the form of 42 which are interspersed to define a bisagr seal around which the halves can relatively pivote with one another. The front parts of the separator halves 30 and 32 each are provided with a semi-inductive recess 44 which cooperates to define a cylindrical aperture through which the rotary conveyor shaft 2 extends when the spacers are mounted to the fins 36. part of the halves of the separators 30 and 32 that are in the back part of the recess 44 includes parallel, flat, opposite side walls 46 and 48 having thick marge portions which, viewed laterally, define respective rings 50 and 52 that they are arcuately curved at a fixed radi. As best seen in Figure 7, the rings 50 and 52 are approximately one third thicker than, and have a radial height h approximately equal to twice the thickness of the remaining wall of the side walls 46 and 48. Joining the inner part radially or base of each of the rings 50 and 52 is a concave, intermediate wall 54 extending radially inward from the base by an equal distance d approximately the radial height of the rings 50 and 52 so as to form a cut-out guide channel 56 that functions to orient and cut in a back-and-forth direction that is transported to the rear by a rotary transport 14.

In a satisfactory embodiment of the invention, the radius of the rings is 120 millimeters while the thickness of the walls 46 and 48 is a constant 4.6 millimeters except that the rings 50 and 52 which are approximately 8 millimeters in thickness and have a radial height of millimeters beyond the junction with the intermediate wall 54. The concavity of a main part of the wall 54 is such that in the transverse middle part of the wall 54 it is radially located inwardly from the outer radius of the rims 50. 52 for a distance d of about 15 millimeters. These dimensions, together with the use of ultrahigh molecular weight polyethylene (UHMW) material, result in a separator 28 having a use life of about ten times that of the one achieved by the prior art separator and with the wall 54 acting to orient the trim in the back-to-front direction. In addition, because the separator halves 30 and 32 are identical, the separator 28 may be inverted when the upper half s wear too much for satisfactory operation.

Claims (4)

1. In a separator, for rigid flat points d a rotating conveyor, which includes identical halves coupled together so as to define an oval shape when viewed from the side, each half of the separator has a pair of parallel flat side walls separated by marginal portions that the arched rings and an intermediate wall extending between and joining at a base location of said arched rings, the improvement comprises: the rings of each half d separator having a thickness greater than said side walls and having a height above of said intermediate wall l which is approximately twice the thickness of said lateral walls.

2. The separator, as claimed in clause 1, characterized in that said intermediate wall is concave in vertical cross section over most of the length between said side walls.

3. The separator, as claimed in clause 2, characterized in that the concavity of said intermediate wall is such that it results in half of said intermediate wall being separated from a line that extends between the respective locations where the intermediate wall joins the rings in an opposite direction from the peripheral portions of said rings by an amount greater than the distance between said peripheral portions of said line.

4. The separator, as claimed in clause 1, characterized in that the separator is constructed of ultra high molecular weight polyethylene.