EP0700725B1 - Meat mincing machine - Google Patents

Abstract

A meat mincer assembly incorporates a helical cutter (2) with a delivery unit (1) located in the same plane and arranged either in a straight line or at right angles. An insert (7) is arranged above the helical cutter thus reducing the volume of the space (3) above the helical cutter. The insert (7) used may be of various segment (11) widths, applies a selected pressure to the meat and is located alongside a meat insert funnel (6). The insert (7) is a semi-circular unit consisting of a basic shape (8) with lateral securing tabs (9).

Description

The invention relates to a meat grinder, which preferably designed as an angle grinder or automatic grinder and is equipped with feed and working screw.

In the well-known meat grinders of this genus Feed and work screws in levels and on the right Stored at an angle to each other in the meat grinder. At the transition points from the feed screw to the work screw the snail bodies are particularly constructive designed and executed to make a qualitative transition or transfer of the raw material from the feed screw to the working screw to reach.

The DD-PS 289220 is a feed screw in meat grinders described in the recording area of the wolfend Raw material has a delivery pulse piece, which from there is a 1/4 to 1/2 worm gear, single or multiple is trained and its pitch up to 20% the screw flight height of the feed screw is formed.

This solution has the advantage that the Wolfgut has an axial thrust is granted, on the other hand, however, the working screw a free space in the area of the conveying pulse piece so that undisturbed operation is possible.

A disadvantage of all known burrows of this type is that immediately in the area of the transition from feed screw to the working screw, the handover of the wolf material from the large feed screw to the smaller working screw than from the slow-moving feeder to the fast-moving Working screw, no definite pressure build-up in the processed goods can be achieved, which negatively affects the Affects the quality of the wolf.

Furthermore, this area is very poorly hygienic to control and therefore questionable from a hygienic point of view, which is also caused in particular by the fact that different raw materials and their state of health create additional problems in the transfer between the two screws.
In the case of softer raw materials, the raw material flows back, since the pressure force of the feed screw and the poor removal of raw material by the working screw cause the raw material to swell back into the feed hopper and is constantly squeezed.

With very hard raw materials, for example with deep-frozen Meat, creates the casing, the pipe in which the Feeder screw works due to the size differences to the working screw, a very large raw material jam there here a compression of the raw material with the handover of the raw material goes hand in hand and so often malfunctions due to discontinuous Enter the flow of funding.

The object of the invention is to develop a meat grinder, designed as a straight-angle or automatic grinder, with which Area of raw material transfer from the feed screw (s) to the Working screw, depending on the type of raw material and their state forms and thus the specific transfer conditions Taking into account, a pressure build-up of the raw material is reached and the transfer point can be configured variably is.

According to the invention the object is achieved by the in claim 1 highlighted inventive features solved.

Advantageous designs are the subject of the dependent claims.

The solution according to the invention is characterized in that that in the transfer area of the feed and working screw, in the tub or the hopper, a variable, removable and adjustable pressure chamber is provided, which corresponds to the specific operating conditions in its execution, design and arrangement changeable is trained.

The prevailing pressure cushion in the pressure chamber results from the mass thrust, the kinetic energy, which results from the speed and geometry of the feeder and Derives worm and the preparation material, and ensures a full thrust in the pressure chamber, which is transferred to the working screw and in the Working screw is continued up to the output side provided cutting set. This increases the thrust potential for the knife system and leads to a 30% increase in performance of the meat grinder.

The invention also includes that the pressure chamber in its Execution and arrangement can be trained differently, this depends on the prevailing operating conditions is derived and the individual elements for the pressure room be designed and arranged accordingly.

The principle applies that for soft processed goods a long pressure space is needed while for hard Raw materials a short pressure room in its length the demands for pressure build-up and eligibility justice. On the other hand, this means that the respective Processing goods a lower or stronger support must get on the walls in the pressure chamber.

This is done in the form that in the transfer area, in direct connection to the tub or filling funnel wall, supportive and attached to the side walls, half-shell-shaped trained built-in elements are arranged, the space above the feed screw up and to the side cover to the working auger.

The top cover to the feed screw housing is in their executable length designed so that through the use of so-called segments of the pressure chamber is adapted to the respective operating conditions, by the additional arrangement of segments Length of pressure chamber extended or by removing Segments the pressure chamber length is reduced.

Pneumatic or hydraulic control systems, paired with the machine control system and initiate the actuating processes during the work process and vary.

With the present solution, a pressure maintenance function is assigned to the transfer point of the feed screw - work screw, which is achieved by the design of the pressure chamber in this area, since the diameter of the pressure pipe in the transfer area corresponds to the diameter of the feed screw. is adjusted so that there is a small space between the two parts.
The pressure pipe length is also determined by the types of raw materials and their condition.
The pressure chamber arrangement and design can also be used on meat grinders with two feed screws.

It is also advantageous that the pressure chamber in the transfer area of feeder and working screw in its cross section, in Circumferential volume, can also be changed during the operating state is. This is achieved by using appropriate actuators, for example pneumatic cylinder, the built-in element is moved away or delivered from the transfer area.

This control process is derived from the optimal conditions of the feeding process depending on the to be processed Raw material and the operation of the machine. A computer-aided control and regulation program gives the corresponding Information and impulses for control the actuators.

Fig. 1:

eine Schnittdarstellung des Übergabebereiches von Zubringer- und Arbeitsschnecke

Fig. 2:

eine weitere Schnittdarstellung des Übergabebereiches

Fig. 3:

eine Stirnansicht auf den Übergabebereich

Fig. 4:

ein Einbauelement

Fig. 5:

ein Einbauelement-Segment

With the following embodiment, the invention will be explained in more detail. The accompanying drawing shows in

Fig. 1:

a sectional view of the transfer area of feeder and working screw

Fig. 2:

another sectional view of the transfer area

Fig. 3:

an end view of the transfer area

Fig. 4:

a built-in element

Fig. 5:

a built-in element segment

The assignment of feeder and working screw 1; 2 in the transfer area and the arrangement of the pressure chamber 3 are shown in principle in Figure 1.
The housing 4 of the worm screw 2 is arranged directly on the end wall 5 of the hopper 6 and on the inside of the hopper 6 there are built-in elements 7, laterally supported against the side parts of the hopper 6, which surround the feed screw 1 above and in the inserted state Form pressure chamber 3.

The built-in elements 7 can be entirely or individually also consist of individual sections and accordingly be arranged in the hopper 6.

A preferred design option for a built-in element 7 results from FIG. 4, which consists of a bowl-shaped base body 8, the lateral Has support and holding tabs 9 and their shell-shaped Base body 8 has a radius that is larger the feed screw is 1.

The inner surface of the half-shell has support elements 10, that the processed goods have sufficient support and Secures dwell time in the pressure room 3, so that the necessary Axial thrust can be built up and on the material to be processed can work.

The variability of the total length of the base body 8 and thus that of the pressure chamber 3, adapted or derived from the prevailing operating conditions is given by that this consists of individual segments 11 which, arranged together, give the necessary pressure chamber length or justify.

Another interchangeable built-in element 7 and its Arrangement in the hopper 6 is shown in Figure 2.

This installation element 7 is a means Bolted segment 12, which is triangular is formed and, on the end wall 13 of the Filling funnel 6 arranged, the feed screw. 1 encloses upwards, whereby the pressure chamber 3 is formed becomes. Because of its inclined side wall 14 Feeding the material to be processed in the hopper 6 positively influences what cakes the processed goods excludes.

The new solution can also be used in automated wolves two feed screws arranged in parallel 1.

Also with this design and embodiment of the transfer area is achieved through the use of built-in elements 7, created a pressure chamber 3, which in analog and above Design and arrangement described in the hopper 6 is arranged.

A corresponding arrangement is shown in FIG. 3, in which designated 15 the housing of the worm 2 is.

FIG. 5 shows in the installation element segment 11, which in its basic structure the built-in element 7 in external form and corresponds to geometric design.

By lining up individual segments 11 the pressure chamber 3 can be designed differently in length in order to meet the respective processing goods to give sufficient support in the pressure chamber 3 and the to secure the necessary dwell time.

The installation elements 7 described so far are designed that they are either in part or as segments 11 lined up, used and in the guides locked in the hopper 6 and by means of clamping elements 16 be attached.

A further embodiment of the built-in elements 7 is possible in such a way that the built-in elements 7 are designed such that they can slide into one another and are controlled via separate devices, for example hydraulic elements and a corresponding control system, in order to displace the individual segments 11.
This shifting can take place during operation and can be adapted to the prevailing operating conditions.

A major advantage of the invention is that the the elements forming the pressure chamber 3 are not conventional Materials, such as gray cast iron, are made from materials with steel quality, which has a positive effect on the sliding properties affects and is also advantageous in terms of cost.

The interchangeability is also advantageous because the Transfer point of feeder and worm screw 1; 2 exposed by removing the individual elements and thus meets the hygiene requirements future cleaning is possible.

Claims (6)

1. Meat mincing machine with a feed and working screw, located to each other in one plane or offset at 90 degrees, whereby the feed screws are arranged individually or with two feed screws parallel to each other and where a charging funnel is foreseen above the feed screws, wherein

   replaceable and adjustable built-in elements (7), forming a pressure chamber (3) towards the feed screw (1) are arranged in the delivery area of the feed and working screw (1; 2) above the feed screw (1) and on the inner surfaces of the front and side walls of the charging funnel (6).
2. Meat mincing machine according to claim 1, wherein

   the built-in elements (7) are designed of differing shape, preferably as a shell-shaped built-in element (7) consisting of a structure (8) with lateral holding clips (9).
3. Meat mincing machine according to claims 1 to 2, wherein

   the built-in element (7) is designed as a replaceable steel construction segment (12), arranged on the inner surface of the front wall (13), and where its inclined side wall (14) is designed as a feed chute.
4. Meat mincing machine according to claims 1 to 3, wherein

   the built-in element (7) can be composed of individual built-in element segments (11), which when fitted correspond to the requisite length of the pressure chamber (3).
5. Meat mincing machine according to claims 1 to 4, wherein

   the shell-shaped structure (8) has supporting elements (10) on its inner wall, which are preferably designed as grooves.
6. Meat mincing machine according to claims 1 to 5, wherein

   the variable pressure chamber (3), depending on the raw material and the required operating conditions as well as the way the machine works, is also designed to be adjustable when in operation and the adjustment stems from a control element.

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