RU2326576C2 - Device for cross-cutting of product layers - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention concerns the food-processing industry and can be used to cube or to slice layers of bakery goods for manufacturing of small rusks. The device contains two shafts 2, 3 with cutters 4, 5 for slitting, executed in the form of splines, having tops joined with each other. One of shafts 3 that has cutters posseses annular grooves 6. Cutters of a shaft 3 have dredgings at their tops penetrated by cutters cutting edges of shaft 2. There is shaft 8 with circular knives 10 for a crosscutting installed below shaft 2. Edges of circular knives are included into flutes 6 of shaft 3 that has cutters. There are cutoff plates 11 between circular knives on the basis of bushes 9 dividing them are installed. Shafts are connected with a drive of their rotation.

EFFECT: possibility to carry out cutting by three shafts using one of slitting cut shafts for the product pulling while crosscutting and thus making the design of the device simple.

2 cl, 3 dwg

Description

The invention relates to the food industry, in particular to equipment for dividing food into parts, and can be used for cutting layers of bakery products into cubes or slices for the production of small crackers.

A known machine for the cross cutting of layers of fibrous tissue of animals, containing mounted one above the other blocks of transverse and longitudinal cutting, of which the upper has a shaft with circular knives and a shaft for pulling the formation with protrusions and ring grooves, which include the cutting edges of circular knives, and the lower has a shaft with cutting protrusions running along its axis and a shaft with recesses for the cutting edges of the protrusions, a shaft rotation drive in one direction in the cutting zones and cutters installed in the spaces between the circular knives (US No. 4782729, 11/08/1988).

This machine has four shafts with cutting, pulling and supporting elements, in addition, the upper block has a shaft with gripping protrusions on only one side of the formation, as a result of which, as practice has shown, it does not capture the loaded formation without applying force to it, which requires manual loading formations or using a loading mechanism.

Closest to the claimed invention is a device for the cross cutting of product layers, for example bread, containing mounted one above the other blocks of longitudinal and transverse cutting, of which the upper one has two shafts with cutters made in the form of splines having cutting vertices joined to each other, moreover one of these shafts is equipped with annular grooves with cutters located in them, and the lower block has a shaft with circular knives with cutters located between them and a grooved shaft for gripping and pulling m Therians provided with annular grooves, in which cutting edges are circular blades, and the rotational drive shaft in one direction into the cutting zone (RU №2214905, 2003.10.27, prototype).

This device does not require the application of force to load each formation into a slitting unit, since a formation running under its own weight is captured on two sides by mating teeth of slot-shaped cutters. However, it has a separate corrugated shaft connected to the drive for pulling the formation during transverse cutting, which complicates the design.

The technical result obtained by using the claimed invention is to enable the cutting of three shafts with the exception of the fourth - corrugated shaft and simplification due to this design, reducing the size and metal consumption of the device.

To achieve the specified result in a device for cross cutting of product layers containing two shafts with cutters for longitudinal cutting, made in the form of splines having vertices joined to each other, one of the shafts with cutters having annular grooves, a shaft with circular knives for transverse cutting mounted below the shaft with cutters, cutters located between the circular knives, and the shaft rotation drive, according to the invention, the shaft with circular knives is installed so that the edges of the knives enter the grooves of the shaft with the cutters.

In addition, the cutters of one of the shafts of longitudinal cutting are made with recesses at the vertices, which include the cutting edges of the cutters of the opposite shaft.

The installation of a shaft with circular knives, providing the location of the edges of these knives in the grooves of the shaft with cutters, allows you to use the shaft with cutters and grooves as a means for pulling the formation when cutting with circular knives.

Making recesses on the tops of the cutters of one of the shafts with the cutting edges of the opposing shaft cutting into these recesses avoids undercutting of the formation when it is difficult to make skewing of the joined vertices of the cutters of two shafts, which is especially noticeable with elongated shafts.

Figure 1 shows the inventive device with a cut in a plane perpendicular to the axes of the shafts; figure 2 - remote element In figure 1; in Fig.3 is a diagram with a section aa of Fig.1.

A device for cross cutting product layers, for example bread, contains a housing 1, in the walls of which are installed horizontally and parallel to each other shafts 2, 3 with cutters 4, 5 for longitudinal cutting of the layers into strips made in the form of triangular slots that are joined together during the rotation of the top shafts. The tops of the cutters of each shaft are made on a round cylindrical surface, coaxial to the shafts. The axis of the shaft 3 can be located lower, above the axis of the shaft 2 or at the same level with it. The shaft 3 has annular grooves 6. Their radius is greater than the height of the tooth of the cutter 5. The cutters 5 of the shaft 3 can be made with triangular or radius recesses 7 with a depth of 0.3-0.6 mm at the vertices that include the cutting edges of the cutters 4 of the shaft 2.

In the walls of the housing 1 below the shaft 2 and parallel to it there is a shaft 8 carrying disc knives 10 separated by bushings 9, the cutting edges of which enter the grooves 6 of the shaft 3 to a depth exceeding the height of the tooth of the cutter 5. In between the disc knives 10 are installed with a minimum clearance from the walls of the knives, the cut-offs 11, made in the form of curved plates hung on a rod 12, mounted in the walls of the housing. The cutters 11 are based on the bushings 9 on their side facing the shaft 3 with grooves. In the grooves 6 of the shaft 3 can be installed on the rod 13 with a minimum clearance from the walls of the grooves of the scraper 14, they are pressed with their ends to the bottom of the grooves 6 and are designed to clean them from sticking to their surface of the bread mass.

The device has a drive 15, providing rotation of the shafts along the arrows C, D, E.

The housing has a loading window with an inclined tray 16 and an unloading window 17.

The device operates as follows.

The shafts rotate in the direction indicated by the arrows C, D, E; shafts 2, 3 rotate synchronously. Layers 18 of bread are fed into the loading hole by a belt conveyor (not shown) and rolled along the tray 16 into the zone between the cutters 5 and 4, which are inserted into the layer from two sides to half its thickness, while at the locations of the annular grooves 6 in the cutters 5 remain jumper nodorez going from top to bottom. Next, a layer with longitudinal cuts, remaining between the cutters 5, is fed when the shaft 3 is rotated down (according to the drawing) to circular knives that cut strips into cubes or elongated slices, while cutting the jumpers. The cutters 11 prevent the capture of cubes or slices by the walls of the disk knives 10, clean their surfaces from sticking bread mass and direct the chopped product into the discharge window 17.

The claimed invention is industrially applicable and gives the specified technical result.

Claims (2)

1. A device for cross-cutting product layers, containing two shafts with cutters for longitudinal cutting, made in the form of splines having vertices joined to each other, one of the shafts with cutters having annular grooves, a shaft with circular knives for transverse cutting, mounted below shaft with cutters, cutters located between circular knives, and a shaft rotation drive, characterized in that the shaft with circular knives is installed so that the edges of the knives enter the grooves of the shaft with the cutters. 2. The device according to claim 1, characterized in that the cutters of one of the shafts of longitudinal cutting are made with recesses at the vertices, which include the cutting edges of the cutters of the opposite shaft.

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