RU28842U1 - Device for cutting into strips of pieces of material - Google Patents

Description

a rectangular shape containing a table, a vehicle for moving the product on the table, made in the form of an endless chain with leads for gripping pieces from the sides, parallel cutting elements located above the table on a horizontal shaft in the form of circular saws with spacers between them and a clamping device product to the table with spring-loaded brackets located in the gaps between the saws (USSR patent No. 1542405, publ. 07.02.90).

The disadvantage of this device is the limited technological capabilities, since it can be used to cut only products moving on a fixed table with little friction, for example, layers of frozen fish. When pressed against a fixed table of slices of bread, the friction force creates resistance to the movement of the product, leading to the destruction of slices of lateral grabs. In addition, since the piece cut into strips is caught by the feed mechanism on the sides, only pieces of a given size and shape can be cut. Therefore, flat pieces of products of different thicknesses, sizes and shapes, including slices of bread loaves of different sizes or slices of loaves, cannot be cut into strips using this device.

The disadvantages of this device are also large dimensions, due to the use of a chain conveyor and the complexity of the design of the clamping bracket, made in the form of a rigidly mounted articulated comb.

Closest to the proposed device is a device for cutting into narrow strips of sheet material, containing a shaft installed in the housing with a set of disc knives separated by bushings and a shaft with a drum equipped with annular grooves for the entry of knives, a drive for rotating the knives and

the drum in one direction in the cutting zone, the brackets installed in the gaps between the knives, the convex sides facing the drum and located at their ends Outside the knives, two crossbars connecting the brackets to the body (author's certificate No. 333036, publ. 21.03.72).

The disadvantage of this device is the lack of a vehicle capable of pulling pieces of food of different thicknesses and shapes — pieces of fat, potatoes, fruits, layers of frozen fish, and slices of bread through the cutting zone into strips.

The present invention solves the problem of obtaining the ability to cut into narrow strips of food pieces of different thicknesses and with different degrees of elasticity. As for cutting slices of bread, the invention solves the problem of cutting into narrow strips of 4 mm wide or less from a slice of a standard loaf at a high speed of up to 1 m / min, that is, solves the problem of creating a large effort to pull the strips between the knives, necessary to overcome the friction between stripes and knives and resistance to cutting.

To solve these technical problems, in a device for cutting into strips of pieces of material containing a shaft with a set of disc knives separated by bushings and a shaft with a drum equipped with annular grooves for the knives to enter, a drive that rotates the knives and drum in one direction in the cutting zone , the brackets installed in the spaces between the knives, the convex sides facing the drum and located at their ends outside the knives, two cross members connecting the brackets to the body, according to the invention, the drum is equipped with wives protrusions to capture the material, and the staples are made in width.

overlapping gaps between knives.

In addition, according to the invention, the brackets are mounted on one cross member rotatably, and the second cross member are bushes between the knives.

The difference from the prototype, consisting in the implementation of a drum with protrusions, allows you to capture the product by introducing protrusions into it, which creates a pulling force applied on one side of the piece of product.

Due to the implementation of staples in width, overlapping the gaps between the knives, the staples are not pressed into the product strips, but pressed into the depressions between the protrusions of the drum, which creates a deep grip of the product by the drum on one side of the piece.

Due to the implementation of the staples in width, overlapping the gaps between the cutting elements, the product strips are compressed in the space between the drum, the walls of the knives and staples in the pull zone. Due to the elastic properties of the product, it is pressed against the walls of the knives. Since the knives rotate in the cutting and pulling zone in the same direction as the drum, the pulling force is applied by the walls of the knives to the bread strip to its entire depth. As a result, in the case of cutting slices of bread into strips, there is a pulling force that overcomes at high speed (up to 1 m / min) the resistance on the cutting edges of the knives (the number of knives can be 20 pieces per slice of a standard loaf of bread), as well as friction during movement stripes in brackets.

The execution of staples in width, overlapping the gaps between the knives, is also necessary to clean the walls of the knives from the sticking mass of the product.

The installation of brackets on one of the rails allows you to rotate the distance between the brackets and the drum.

The installation of brackets based on sleeves allows you to change the distance between the brackets and the drum, changing the diameter of the sleeves, and thereby configure the device to cut the product with different elastic properties and with different piece thickness.

In FIG. 1 shows the proposed device in a section, a view along the axes of the shafts; in FIG. 2 is a top view without a casing.

A fork 3 is installed in the horizontal guides 1 of the device housing 2, the bearing shaft 4 with a set of disk knives 5 separated by interchangeable sleeves 6. A bolt 7, which enters the hole of the fork 3, is rigidly attached to the housing 2. The nuts 8 fix the fork 3 relative to the housing 2.

A shaft 9 is installed in the housing 2 with a support drum 10 mounted on it. The axes of the shafts 4 and 9 are mutually parallel and are located in the horizontal plane P.

The drum 10 has protrusions in the form of triangular teeth And and annular noses 12. The vertices of the teeth are made on a circular cylindrical surface C, coaxial to the drum. The depth of the grooves 12 exceeds the depth of the depressions between the teeth of I. The knives 12 are included in the grooves 5. The drum is drawn from rings 13 with grooves forming grooves 12 and intermediate interchangeable rings 14.

The shafts 4, 9 are connected with the drive, including the gearbox 15. The drive provides the rotation of the shafts, in which the sides of the knives 5 and the drum 10 facing each other rotate one side down (according to the drawing) along arrows A and B.

A cross member 16 is attached to the housing 2 parallel to the shafts above the knives, on which brackets 17 are attached, convex sides facing the drum. Convex sections of staples 17

located between the knives 5. The brackets 17 are made on a cord, providing overlapping gaps between the knives in the cutting and pulling zone. The brackets 17 are based on the second cross member connected with the housing, namely the bushings 6. The distance h between the brackets and the cylindrical surface C of the drum is less than the thickness hi of the slice 18 being cut.

The brackets 17 are mounted on the crossbars with the possibility of lateral movement, that is, there are no stops restricting the displacement of the springs along the crossbars. This provides a self-installation of staples between the knives and uniform minimum gaps between their edges and knives, which improves the quality of cleaning knives staples.

A removable protective casing 20 is attached to the body, having a through guide box 21 located above the cutting zone for supplying slices 18 to the cutting zone.

The device operates as follows.

When the rotating shafts 21 are inserted, a cut product, a loaf of bread, is inserted into the box 21. When the end of the slice of the brackets 17 and the teeth 11 of the drum 10 are touched, the operator’s hand or mechanical feed means (not shown) creates a starting pressure on the product in the direction of arrow D, sending it to the wedge-shaped space staples and drum and overcoming the resistance of the cutting edges of the knives. Further, the rotation of the drum 10 during the introduction of the product into the recesses between the teeth 11, as well as the rotation of the knives 5 while pressing the bread strips against them, allows the strips of the slice to be pulled down along the brackets 17, in which the chunk passes through the cutting zone. The ends of the staples extending beyond the knives prevent the knives from seizing the strips and direct them down to the next position or into the tray.

O.M language

17 having a width overlapping new inter-knife spaces.

When switching to cutting pieces of larger thickness, put sleeves 6 of smaller diameter.

When the blades are dull or after regrinding, their diameter decreases, which leads to the formation of circular gaps between the cutting edges of the knives and the tooth cavities, and this gives an incomplete cut. In this case, the plug 3 is shifted to the left (according to the drawing) and fixed with nuts 8.

The proposed device can be located in a line for the manufacture of small crackers between a machine for cutting loaves of bread into slices (for example, a bread-slicing machine KhRP) and a device for the transverse cutting of strips of bread into cubes; the device can be placed in one housing with the specified device. When this is used, the movement of the strips from the zone of pulling the proposed device for feeding into the device for transverse cutting.

Compared with the prototype device, the proposed device allows you to cut into strips of various products: layers of frozen fish, pieces of fat and slices of bread of different thicknesses, potatoes, fruits.

Author / uKychakov A.A.

Claims (2)

1. A device for cutting into strips of pieces of material, containing a shaft installed in the housing with a set of disc knives separated by bushings and a shaft with a drum equipped with annular grooves for the entry of knives, a drive that rotates the knives and drum in one direction in the cutting zone, brackets installed in the intervals between the knives, the convex sides facing the drum and located at their ends outside the knives, two cross members connecting the brackets to the body, characterized in that the drum is equipped with protrusions for gripping the material, and It is made across the width overlapping the gaps between the blades. 2. The device according to claim 1, characterized in that the brackets are mounted on one cross member rotary, and the second cross serves as a hub between the knives.