RU176201U1 - DEVICE ASSEMBLY DEVICE - Google Patents

Abstract

The utility model relates to the food industry, as well as to machine tools for such an industry and can be used in the manufacture of dough sheeters. The objective of the utility model is to ensure ease of removal of the drum from the shaft when servicing the machine in conditions of severe contamination of parts and assemblies with dough. The technical result achieved by the implementation of its distinguishing features is the prevention of formation on the shaft and / or on the roller scoring. This result is achieved due to the fact that the roller is made up of at least two parts - from the working sleeve, intended for contact with the dough, and at least one main adapter - the sleeve, designed for contact with the shaft, while the adapter material is chosen softer than with sleeve material.

Description

Technical field

The utility model relates to the food industry, as well as to machine tools for such an industry and can be used in the manufacture of dough sheeters.

The roller assembly directly corresponding to the utility model has been tested on drum-type machines for the production of ravioli, dumplings, etc.

State of the art

A known part of the rolling unit of the dough sheeter, including a shaft with a removable roller mounted on it, between which a key connection is formed (made) (RU 2272410 and 149259). This part is selected as a prototype.

Notes.

1) The roller unit itself includes two such parts (the dough is rolled out by a pair of rollers installed relative to each other with a given gap).

2) By means of a key connection, the shaft drives the roller into rotation, i.e. there is practically no slipping of the drum relative to the shaft, and if it exists (for example, due to wear of the key), it does not have technological significance - it does not perform a useful function from the point of view of rolling the dough.

The shaft and drum are made of various materials. For the manufacture of the shaft using heat-treated steel (for example, St. 30 × 13 or St. 40 × 13), while the roller is made of non-heat-treated steel (for example, St. 14 × 17n2) - from the material most suitable for interaction with the dough.

The roller is removable, which is necessary for sanitization of the dough sheeter, as well as for replacing the roller, for example, in the absence of a mechanism for adjusting the inter-roll gap in an integral unit (rollers of different diameters can be installed to adjust the gap).

The problem is that in real conditions there is a strong contamination of the dough sheeter by the test. Getting into the gap between the shaft and the roller, sticky dough leads to a bite of the roller on the shaft, which prevents the first from the second. This is a rather serious problem, since frequent biting takes the drum, and sometimes the shaft, out of working condition.

Also known adapter, placed between the shaft and the main part.

So, for example, a multilayer insert (sleeve / adapter) is known - a plain bearing insert consisting of layers of various materials (GOST 4378-1-2001, clause 4.5, Fig. 15). A replaceable insert in a sliding bearing is used in order to simplify the repair of the latter, as well as not to carry out its entire body of antifriction material. In technology, as a rule, bimetallic liners are used in which the antifriction layer is deposited on a steel or bronze base.

Technical result

The purpose of the utility model is to improve the prototype.

The objective of the utility model is to ensure ease of removal of the drum from the shaft when servicing the machine in real conditions, in particular, to reduce the effort required for removal of the machine, eliminating the need to use special tools.

The technical result achieved by the implementation of the distinguishing features of the utility model is to prevent the formation of scoring on the shaft and / or on the roller that can bring the roller and shaft out of operation.

Utility Model Essence

The claimed technical result is achieved due to the fact that in the known device part of the rolling unit of the dough sheeter, including a shaft with a removable roller mounted on it, between which a key connection is formed, the following main distinguishing feature is introduced: the roller is made bi- or polymetallic by applying directly or through an underlayer of one or more of several transitional materials on at least one of its inner landing surface, designed to interface with the shaft, more than soft in comparison with the material of that part of the drum, which is intended for contact with the dough.

The utility model is also characterized by a particular distinguishing feature: a roller can be made up of at least two parts - from a working “sleeve” - a roller, the outer cylindrical surface of which is designed for contact with the dough, and from at least one main adapter - “sleeve”, the inner the surface of which is intended for contact with the shaft, while the adapter material is softer than the material of the roller.

Artwork

Description of the utility model is accompanied by figures 1-3.

In FIG. Figures 1 and 2 show a front view of the drum and a view of it on the right.

In FIG. 3 shows a roller with one main adapter.

The drawings are provided to illustrate the relative position of the parts and structural elements of the roller.

In the drawings, the following notation:

1 - drum;

2 - the working surface of the roller, intended for contact with the dough;

3 - free (not mating with the surfaces of other parts) roll surface;

4 - keyway - when the dough sheeter is operating, the roller rotates along with the shaft;

5 - input chamfer (simplifies the installation of the drum on the shaft);

6 - inner seating surfaces of the drum (at least part of these surfaces, the roller mates with the shaft), in the particular case, preferably these surfaces should be made of different diameters, and in the direction of removal of the roller from the shaft, the larger diameter should first follow (so, in accordance with the drawing, the right the landing surface of the drum has a larger diameter than the left);

7 - material deposited on the right landing surface of the drum (for example, copper deposited directly with a layer with a thickness of 0.04 mm or through a sublayer with a thickness of 0.5-1.0 mm);

8 - the main adapter made of a relatively soft material compared to the material of the part of the drum that is intended for contact with the dough (for example, from BrAZh9-4, BrAZhMts, BrAZhN - preferably or from BrOF10-1, BrOTsS5-5-5);

9 - working sleeve of a prefabricated roller, intended for contact with the dough;

D is the diameter of the landing surface located on the drum from the right with the direction of removal of the drum from right to left;

d is the diameter of the seating surface located on the drum on the left with the direction of removal of the drum from right to left (d <D);

L is the distance by which the inner landing surfaces of the drum are spaced;

- bold horizontal arrow A, directed to the left, - the direction of removal of the drum from the shaft.

Information about the feasibility of implementing a utility model

The part of the rolling unit of the dough sheeter corresponding to the presented utility model should include a shaft with a removable roller mounted on it with a working surface 2, between which a key connection should be formed.

In this case, the roller should be bi- or polymetallic by applying directly or through a sublayer of one or several transition materials to at least one of its inner seating surface (for example, to one of the surfaces 6), designed to interface with the shaft, material 7 more soft in comparison with the material of that part of the drum, which is intended for contact with the dough.

At the same time, the roller can be made up of at least two parts - from the working sleeve 9, intended for contact with the dough, and at least one main adapter 8 - the sleeve, intended for contact with the shaft.

Moreover, the material of the adapter should be softer compared to the material of the sleeve.

A roller may include at least two main adapters if it has more than two seating surfaces.

So, for example, the roller may have three seating surfaces - two from the edges and one in the middle (along the axis). In this case, it is advisable to put copper on the inner landing, while external should be performed in the adapter.

The roller may include at least one additional adapter located between the sleeve and the main adapter.

The roller may include at least one fastener providing a connection between the sleeve and the main adapter.

The main adapter can be made of bronze.

The main adapter can be pressed into the sleeve.

The roller may have two intended for mating with the shaft spaced apart by a distance L (it is desirable that L is more than 10 mm less than the length of the drum) along its axis, internal seating surfaces 6, between which there may be an internal free surface 3 of the roller, which is not mated with any other details.

The diameters of the seating surfaces D and d of the roller may be different.

Note. It is assumed that the seating surfaces of the roller need not be cylindrical.

For example, they may be square in cross section. In this case, the landing surface should be located on the left, the cross-sectional diagonal of which is smaller than that of the right landing surface (in accordance with Fig. 1).

A keyway 4 can be made on one of the seating surfaces.

A larger diameter may have one of the seating surfaces of the roll on which the keyway is made.

At least one of the seating surfaces can be made in a material deposited on the roller.

At least one of the landing surfaces of the drum may have a chamfer 5 from the side opposite to the direction of removal of the drum from the shaft.

The best embodiment of the utility model is shown in FIG. 3.

The relationship of distinctive features with the claimed technical result

As already noted above, during operation, the roller rotates along with the shaft. In this regard, the materials presented are not talking about the selection of an antifriction pair of materials.

The utility model solves the problem of progressive removal of the drum from the shaft, when the friction forces of one against the other are not important.

In the process of rolling, the dough (though insignificant) between the drum and the shaft gets (dragged) the dough, flour microparticles, which (as disassembly shows) under the influence of vibrations inherent in a working machine, extend to the entire contact area of the drum and roller.

Subsequently, like micro wedges, they interfere with the removal of the drum from the shaft - after all, the landing of one on the other should be with small gaps (referring to the orientation on the two landing surfaces), since they affect the gap between the rollers, which determines the thickness and thickness of the rolled test tape.

The use of a coating of the landing surface of the drum from a relatively soft material eliminates jamming of the drum on the shaft during its removal, which avoids biting.

Claims (2)

1. Part of the rolling unit of the dough sheeter, including a shaft with a removable roller mounted on it, between which a key connection is formed, characterized in that the roller is bi- or polymetallic by applying directly or through a sublayer of one or more of several transition materials to at least one of it the inner landing surface, designed to interface with the shaft, the material is softer compared to the material of the part of the drum, which is intended for contact with the dough. 2. A part of the rolling unit of the dough sheeter according to claim 1, characterized in that the roller is made up of at least two parts - from a working “sleeve” - a roller, the outer cylindrical surface of which is designed to contact with the dough, and from at least one main adapter - "Sleeves", the inner surface of which is intended for contact with the shaft, while the adapter material is softer compared to the material of the roller.

Images