RU2411734C1 - Device for removal of meat from poultry leg bones - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention is intended for usage in poultry processing shops as well as at farming enterprises and in individual households. The device contains a base, two hollow movable cylinders, mounted coaxially so that to enable relocation and having conic grooves on adjacent ends for muscular tissue shear towards the knee-joint, and a cutting element for removal of meat during one hollow cylinder relocation towards the other one, the cutting element positioned concentrically relative to one of the hollow movable cylinders. The cutting element is represented by a cylinder with one or multiple cutting edge(s). Each edge is formed by the cylinder intersection with a plane at an acute to the cylinder axial line. Apart from boning the invention enables epiphysis cutoff.

EFFECT: reliable and handy device with an extended interval of service life between the blade sharpening instances.

6 dwg

Description

The invention relates to mechanical engineering, in particular to devices for removing meat (deboning) from the thighs and thighs of poultry legs, and can be used in poultry processing workshops, as well as in farms, in the private sector.

A device for removing meat from chicken legs, including a base, two hollow coaxially mounted movable cylinder with tapered grooves, a cutting tool in the form of a fixed sleeve and a drive (RF patent No. 2043724, MKI A22C 21/06).

However, the disadvantage of this device is the limited ability of the cutting element (knife), which provides only for cutting meat (muscle tissue), and cutting off the final joints (epiphyses) is performed on auxiliary equipment.

The closest in technical essence and the achieved effect to the invention is a device for removing meat from the bones of chicken legs, including a base, two hollow coaxially mounted movable cylinders with conical grooves at adjacent ends to move (cut) muscle tissue (meat) to the knee joint and concentrically a cutting element located relative to one of the hollow movable cylinders for removing meat when moving one hollow movable cylinder towards the other, while the cutting element is fixed to W The rum cylinder is stationary relative to the base, and a plate knife with a V-shaped smooth cutting edge is fixed to the body of the first movable cylinder to cut the pineal glands, and the second cylinder is equipped with a counter element with a straight smooth cutting edge (RF patent No. 2184456, MKI A22C 31/06) .

The disadvantage of this device is that the plate knife for cutting epiphyses has a complex structure, high metal consumption, is located in an area that is inconvenient for operation, and also inconvenient for maintenance (during sanitization and sharpening).

The technical task of this invention is to simplify the design, increase reliability, ease of use and maintenance, reduce metal consumption and overall dimensions.

The solution to this problem is achieved by the fact that instead of two cutting elements for removing meat and cutting the pineal glands, one universal cutting element is installed for removing meat and for cutting the pineal glands. The cutting element is made in the form of a cylinder with a sharp sharp edge (one, two or more), formed by the intersection of the cylinder with a plane at an acute angle to the axial line of the cylinder.

The technical result is that the claimed device is distinguished by the constructive implementation of the cutting element, which allows to significantly simplify its design, reduce metal consumption, functionally combine the process of cutting epiphyses and removing meat from the bones of the legs and simplify the maintenance process (sanitation and sharpening of the cutting element).

Thus, the claimed device meets the criterion of "novelty."

Comparison of the claimed solution not only with the prototype, but also with other technical solutions in this technical field did not allow us to identify signs that distinguish the claimed solution from the prototype, which allows us to conclude that its criterion is “significant differences”.

The invention is illustrated by drawings, where figure 1 shows a device for removing meat from poultry bones, General view.

Figure 2 is a section aa in figure 1, a cross section in the area of the latch.

Figure 3 is a section bB in figure 1, a cross section in the area of the drive shaft.

Figure 4 - universal cylindrical knife for cutting epiphyses and removing meat from bone:

a) with one cutting edge,

b) with two cutting edges.

Figure 5 - schematic representation of the main stages of cutting of the pineal glands:

Stage A - Fixing the legs with cut epiphysis near the cutting edge of the knife,

Stage B - Cutting off the pineal gland,

Stage B - Removal of cut epiphyses.

Figure 6 - schematic representation of the main stages of removing meat from bone:

Stage A - The initial position of the hollow cylinders when laying the legs,

Stage B - Displacement of meat from the ends of the legs to the knee joint (there are tendon ligaments with the joint)

Stage B - Displacement of meat from the knee joint (rupture of tendon ligaments),

Stage D - Removing meat from the first hollow cylinder and pushing the bone from another cylinder.

The device consists of a base 1 with guide sleeves 2 and 3 mounted on it, with guide holes 4 and 5 made in them for mounting movable hollow cylinders: the first 6 and second 7, with inner conical grooves 8 and 9 available at their adjacent ends.

In the end part of the sleeve 2, a fixed cylindrical knife 10 is fixed with a sharp cutting edge formed by the intersection of the cylinder with a plane at an acute angle to the axial line of the cylinder.

The first cylinder 6 is driven by a gear 11 and a gear rack 12 through a shaft 13 and a flywheel 14 (in the particular case of a manual drive). If necessary, the drive can be mechanized if torque is transmitted to the shaft 13 from a special drive.

The second cylinder 7 is fixed in its original position using the lever 15 and the groove 16, made in the sleeve 2 in cross section relative to the axis of the cylinder.

The device operates as follows. Initially, preparatory work is performed - cutting off the pineal glands. Chicken leg 17, as shown in Fig. 5 (step A), is fixed with a cut-off pineal gland 18 near the cutting edge 19 of the knife 10. When the gear 11 is rotated counterclockwise, the first cylinder 6 starts moving toward the second cylinder 7. When the pressure of the first cylinder 6 is the pineal gland 18 is cut off by its cutting edge 19 (step B and C). Further, the legs with cut epiphyses are to be deboned. Boning (removing meat from the bone) is as follows. Leg 17 manually, as shown in FIG. 6 (step A), is fixed by the ends of the bones 20 into the internal cavities of the cylinders of the first 6 and second 7. When the gear 11 is rotated counterclockwise, the first cylinder 6 starts moving towards the second cylinder 7 (step B) . In this case, the bones 20 enter the cavity of the cylinders until the knee joint 21 is in contact with the conical grooves 8 and 9, and the muscle tissue 22 is displaced from the ends of the bones 20 to the knee joint 21. The conical grooves 8 and 9 facilitate convenient entry of the bones into the cylinders and, when closed, form a cavity for the location of the knee joint 21. The inner diameter of the cylinders 6 and 7 corresponds to the maximum size of the cross-section of the bones 20, and the outer diameter corresponds to the knee joint 21. With the cylinders 6 and 7 fully converging, the muscle tissue 22 is completely displaced from the braids Tei 20 and is concentrically formed around cylinders 6 and 7 (Fig. 6, step B). After that, the latch 15 is rotated from a horizontal position to a vertical, and the cylinder 7 is unlocked (figure 3). With further rotation of the gear 11 and the movement of the cylinder 6, through its pressure through the knee joint 21, the second cylinder 7 and a leg with muscle tissue 22 begin to move, and after contact with the cylindrical knife 10, tendon ligaments connecting the muscle tissue 22 with the knee joint 21 are cut and torn (FIG. 6, step B).

The reverse rotation of the gear 11 (clockwise) moves the cylinder 6 to its original position, and the cylinder 7 is manually shifted to its original position. The muscle tissue thus moves from the cylinder 7 in contact with the end surface of the sleeve 3 (stage D), and the bones 20 are pushed out with special pushers 23 located in the cavities of the cylinders 6 and 7.

This design of the device allows you to use one knife for two purposes: for cutting pineal glands and cutting meat from bones. In addition, the knife compared to a similar knife in the prototype is much simpler and more reliable, since it consists of only one simple part (cylinder) - the prototype has six. The knife is easily removed during sanitation and sharpening. This knife can have not only one cutting edge (Fig. 4a), but two (Fig. 4b) or more, which significantly increases the time resource between sharpening the knife and its service life.

Claims (1)

A device for removing meat from the bones of chicken legs, containing a base coaxially mounted to move the first and second hollow movable cylinders with conical grooves at adjacent ends to move muscle tissue to the knee joint, and a cutting element for concentrating meat concentrically relative to the second hollow movable cylinder when moving the first hollow movable cylinder towards the second, while the cutting element is fixed motionless relative to the base, characterized in that the cutting lement is formed as a cylinder with one, two, three or more cutting edges.

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