Double-gripper for the application of teat cups to an animal to be milked, rinse cup for this and milking machine provided therewith, and a method for milking

Abstract

This invention is related to a double grab, its rinsing cup and milking machine provided therewith, and the method for automatically applying test cups to the teats of an udder of an animal to be milked. The double grab according to the invention includes: a first housing part provided with a first magnet designed to hold a first teat cup; a second housing part, installed substantially in a horizontal plane next to the first housing part, provided with a second magnet designed to hold a second teat cup; whereby each housing part is provided with separate pivoting means that can be activated and is designed to make the related housing part pivot around a pivoting axis which in use, extends substantially in a horizontal direction, substantially in a widthwise direction of the arm.

Claims

1. A double grabber mounted on an arm of a robotic attacher, the double grabber comprising: a first housing part operable to hold a first teat cup; and a second housing part operable to hold a second teat cup and positioned side-by-side with the first housing part; wherein the first housing part is operable to retract longitudinally in relation to the arm of the robotic attacher in conjunction with the second housing part attaching the second teat cup to a dairy livestock; and wherein the second housing part is operable to retract longitudinally in relation to the arm of the robotic attacher in conjunction with the first housing part attaching the first teat cup to the dairy livestock.

2. The double grabber of claim 1, further comprising a cylinder to pivot the first housing part.

3. The double grabber of claim 1, wherein: the first housing part is operable to pivot downwardly in relation to the second housing part in conjunction with the second housing part attaching the second teat cup to the dairy livestock; and the second housing part is operable to pivot downwardly in relation to the first housing part in conjunction with the first housing part attaching the first teat cup to the dairy livestock; wherein the first housing part is operable to pivot independently of the second housing part.

4. The double grabber of claim 1, wherein: the first housing part is provided with a first magnet designed for holding the first teat cup; and the second housing part is provided with a second magnet designed for holding the second teat cup.

5. The double grabber of claim 4, wherein the first magnet is installed in a movable fashion in the first housing part.

6. The double grabber of claim 5, wherein the first magnet is movable substantially in the lengthwise direction of the arm.

7. The double grabber of claim 6, wherein the first magnet is operable to extend to grab the first teat cup and retract to release the first teat cup.

8. The double grabber of claim 5, wherein the first magnet is a permanent magnet.

9. The double grabber of claim 1, wherein the first housing part is operable to retract in the lengthwise direction of the arm.

10. The double grabber of claim 1, wherein the first housing part is operable to extend in the lengthwise direction of the arm.

11. The double grabber of claim 1, further comprising a contact member installed between the first and second housing parts and designed to make contact with a rinsing cup.

12. The double grabber of claim 11, whereby the contact member is designed such that the rinsing cup is substantially positioned in the extension of the arm.

13. The double grabber of claim 1, further comprising a cleansing tool.

14. The double grabber of claim 1, wherein the first housing part further comprises a moon-shaped contact member.

Description

(1) Other benefits, features and details of the invention are explained by means of the preferred modes of embodiment, whereby reference is made to the attached drawings, in which:

(2) FIGS. 1 and 2 show views of a double grab according to the invention;

(3) FIGS. 3 and 4 show views of positioning the teat cups with the double grab from FIGS. 1 and 2; and

(4) FIGS. 5 A and B, show a view of the arm with the double grab with a rinsing cup.

(5) Milking facility 2 with an animal to be milked 4 is provided with a double grab 6 (FIGS. 1 and 5). Double grab 6 is installed at an arm 8 which is connected with frame 10 of milking machine 2. In the embodiment shown, arm 8 is positioned between the hind legs 12 of the animal to be milked 4 for applying the teat cups 14, as well as optionally, also for removing the teat cups 14 from teats 16 of udder 18 of the animal to be milked 4.

(6) Double grab 2 (FIG. 2) is provided with a first housing part/holder 20 and a second housing part/holder 22 with first magnet 24 and second magnet 26, respectively.

(7) When applying a first teat cup 14a with arm 8, double grab 2 (FIG. 2) is positioned between the hind legs 12 of the animal to be milked 4. First teat cup 14a is connected to one of the teats 16 of the animal to be milked 4, whereby first teat cup 14a is held in first housing part 20 of double grab 6. In the embodiment shown, second holder 22 with second teat cup 14b has been brought in a downward pivoted position in order to simplify connection of the first teat cup 14a.

(8) After connecting first teat cup 14a (FIG. 1) onto a teat 16 of the animal to be milked 4, second teat cup 14b (FIG. 2) is connected. For that purpose, the second housing part 22 is pivoted upward and the first housing part 20 is pivoted downward in order to obtain sufficient space for applying second teat cup 14b onto teat 16. For that, arm 8 is positioned with respect to the second teat 16. In the embodiment shown, first holder 20 is provided with a first permanent magnet 24 which after positioning first teat cup 14a is placed somewhat withdrawn in first housing part 20. Magnet 26 of second housing part 22 has in the shown embodiment just been moved forward to make contact with second teat cup 14b so that the latter can be brought in the desired position onto teat 16 of the animal to be milked 4.

(9) In the embodiment shown, detector 26 (FIGS. 3 and 4) has been installed on top of arm 8 with double grab 6 so that positioning of teat cups 14a, 14b with respect to teats 16 of the animal to be milked 4 can be simplified. First housing part 20 can pivot around pivoting axis 28 using cylinder 30. By retracting in cylinder 30, the first housing part 20 is pivoted downward and in the shown embodiment, it is rotated around axis 28. Second housing part 22 can be pivoted around axis 32 using a second cylinder 34. In the shown embodiment, sliding mechanism 36 is also provided with which first housing part 20 is movable in the lengthwise direction of arm 8, in direction A. In the shown embodiment, because of retracting cylinder 30, first housing part 20 will pivot around pivoting axis 28 and will also slide backward in the direction of A with the help of a guide 38 which is movable in slot 40.

(10) In the shown embodiment, second housing part 22 is only pivotable around axis 32 and is not provided with a sliding mechanism 36. Consequently, cylinder 34 for the second housing part 22 can be provided with a shorter stroke and can thus be performed shorter in comparison with cylinder 30 for first housing part 20. Furthermore, this permits that the cylinders seen in lengthwise direction A of arm 8 are mounted in full or in part behind each other to arm 8 so that the width in direction B of grab 6 and arm 8 can remain limited. Moving of magnets 24, 26 is in the shown embodiment provided by a separate drive 42 installed in housing parts 20, 22.

(11) Grab 6 (FIGS. 5 A and B) is also suitable for picking up and positioning of rinsing cup 44 with contact means 46 and contact member 48. In the shown embodiment, rinsing cup 46 is positioned in the extension of arm 8 with the help of contact means 46 provided between first and second housing parts 20, 22. Furthermore, in the shown embodiment, rinsing cup 44 is provided with moon-shaped contact member 48 that can be positioned in one of housing parts 20, 22. Keeping the moon-shaped contact member 48 in housing parts 20, 22 takes place in a manner similar to the one with which teat cups 14 are held in housing part 20, 22.

(12) Prior to actual milking, during the milking process, first a rinsing process is carried out. For that, arm 8 is used to which grab 6 is secured to pick up rinsing cup 44 and for instance, to bring it between the hind legs 12 of the animal to be milked 4 towards teats 16 and to carry out the rinsing process. After the rinsing process, grab 6 can remove rinsing cup 44 in a similar manner. After the rinsing process, actual milking of the animal to be milked 4 can be carried out. For that, in the shown embodiment, double grab 6 is used to pick up first teat cup 14a and second teat cup 14b and to position it for instance between the hind legs 12 of the animal to be milked 4 with respect to teats 16 of the animal to be milked 4. For applying first teat cup 14a, second housing part 22 is pivoted somewhat downward around pivoting axis 32 with the help of retracting second cylinder 34. First teat cup 14a is then applied on a teat 16. After correctly positioning of the first teat cup 14a, magnet 24 is moved backward in direction A so that first teat cup 14a is released by grab 6. Then, first housing part 20 is pivoted downward around pivoting axis 28 and slid backward via sliding mechanism 36 in direction A by retracting first cylinder 30. Second housing part 22 is pivoted upward so that second teat cup 14b can be positioned with respect to another teat 16 of the animal to be milked 4. After teat cup 14 is correctly positioned, magnet 26 on second housing part 22 is slid backward in direction A so that second teat cup 14b is released from second housing part 22. Arm 8 with grab 6 is then moved again and if so desired, two other teat cups 14 are positioned. After completing the actual milking process, for removing teat cups 14, the movements can, if so desired, be carried out in the opposite sequence.

(13) In the shown embodiment, teat cups 14 are mostly manufactured from a coated steel material and magnets 24, 26 are installed in plastic housing parts, which are movable with the help of air cylinders 42 (FIG. 5B) for instance. In the shown embodiment of double grab 6, housing parts 20, 22 is slidable independently from each other around their respective pivoting axis 28, 32, whereby first housing part 20 is slidable in a direction A in the lengthwise direction of arm 8.

(14) The present invention is not limited in any way to the embodiments described above. The requested rights are determined by the following claims within the scope of which many modifications may be considered. For example, it is part of the possibilities to provide additional teat cups or to supply them in another manner so that arm 8 does not have to be brought back fully.