DE2823878C3 - Device for filleting fish - Google Patents

Description

The invention relates to a device for filleting decapitated and gutted fish, existing «Us conveyors and guides for the input and orientation of the fish, from behind the Circular knives arranged in guides for cutting out a strip of meat on the side of the stream Fish and two filleting knives arranged symmetrically to the main axis of symmetry of the fish, whereby ! between the circular knives and the filleting knives a roof-shaped spreader is provided and the Distance between the surface of the spreader and the cutting edge of the filleting knife approximately the thickness of the corresponds to the largest pancreas of the fish.

Such a device is shown in DE-AS 16 791. However, this construction is proportionate expensive and not suitable for all types of fish.

Also known is a device for filleting fish (GB-PS 9 73 213), the guide flaps for Input and orientation of the fish conveyed in the course of the processing process, circular knife for Abdominal and backward cutting along the fish's trunk up to the spine, a plate-shaped one Includes support (spreader), as well as two FÜetiermesser designed as an endless band. These endless ones Band knives are arranged opposite on both sides of the fish body and for cutting off the both divided from each other by the circular knife

Fillet halves determined

In the work of the establishment, a previously decapitated and gutted fish is cut with the head to the front and the belly down in guide flaps and from there the behind the Guide flaps fed to circular knives arranged one after the other. The circular knives cut the body of the fish along the belly and back up to the spine, and then the fish is iuf the

ίο Put the spreader on and go to the endless filleting hoops further promoted. The two ventral lobes of the fish become at the moment of its passage pressed by this knife close to the spreader, so that the side bones in the zone between the endless Filleting band knives, which separate the fish fillet from the bone structure.

The known device allows the fillet of fish z. B. Herring with the maximum amount of meat win and ensure that all herringbones are cut out. However, this facility is of complicated and bulky construction. The endless filleting band knives are unreliable in the Operation because of frequent belt breaks. In addition, this filleting device is only for a limited number of people Species of fish, e.g. B. for herring, suitable. Due to the complicated structure of the device for pressing the belly flap of the fish against the spreader cannot be sufficiently reliable can be guaranteed with consistent filleting quality. But if the profile of the fish hull If adapted pressure rollers are used, one has to rely on a narrow fish size range. A Disadvantage of the known device is also that the cutting of the fish belly with a As a result, circular knives do not guarantee the removal of thin side bones in the abdominal area.

The invention has for its object to provide a device for filleting fish which a good quality filleting with complete removal of the backbones, the stite bones and the Dorsal fins and with reliable economical cutting out of the fillets made possible and the at simple construction and reliable operation for an extended range of fish sizes and for many types of fish is suitable.

This object is achieved according to the invention in that the filleting knives are designed as hollow cylinders, which are mounted and driven on their inside on support rollers and their longitudinal axis parallel to

so the conveying direction of the fish lies, with the spreader at the points where he touches the filleting knives cooperates, has a cylindrical surface, d'e coaxial with the cutting edges of the filleting knives are trained.

With such a construction and arrangement of the filleting knives and the spreader, the The skeletal structure of the fish in their cross-section takes more account of what offers the possibility of the fish to be centered and oriented more reliably during filleting and thus safely and completely deboned To win fish fillets with maximum meat yield - on the other hand The design of the filleting knives as rings simplifies the construction and increases the Operational reliability.

It is useful to have a bead on the inside of each ring knife for placing the ring knife to be provided on the support rollers. In this way the ring knives can easily be attached to the support rollers

are placed, which in turn are attached to the frame of the facility. Furthermore, through the bead, which represents an increase in the cross section of the ring knife in its rear part, the rigidity of the Ring knife increased

The support rollers can be connected to one another by a console and one of the support rollers can be used to Be cushioned to maintain constant contact between the bead of the ring knife and the support rollers. This will prevent the ring knife from hitting eliminated and a secure contact of the ring knife with the support rollers is guaranteed, which in turn is a ensures reliable transfer of rotary motion from the drive roller to the ring knife.

The invention is described below using an exemplary embodiment with reference to the drawing explained in more detail It shows

F i g. 1 a schematic representation of the device for filleting fish,

Fig. 2 is a section H-II in Fig. 1, which explains the filleting process,

F i g. 3 shows a section IH-HI in FIG. 1 showing the location of the Fish in the guide flaps and the start of cutting out a strip of meat from the bottom the fish belly explained by circular knives,

F i g. 4 shows a section IV-IV in FIG. 1, which shows the position of the fish during its transport and the cutting out a strip of meat from the underside of the fish belly explained,

F i g. 5 shows a section V-V in FIG. 1 of placing the fish on a spreader and transporting it explained along the spreader,

Fig.6 shows a section VI-VI in Fig. 1, the Transport and pressing the belly flap of the fish on the spreader explained,

7 shows a section VII-VII in FIG. 1, showing the position of the fish in relation to filleting ring knives and the arrangement of support rollers explained,

8 shows a part of the section VII-VII in FIG. 7 in enlarged scale,

Fig.9 eh. at section IX-IX in Fig. 7, which shows the Figure 10 shows a cross section of a filleting ring knife (its bead) and a drive roller

The device shown for filleting fish contains guide flaps 1 for input and Orientation of the fish. A fish is transported and centered during processing promoted. These elements consist of two pairs of profiled spring-loaded and corrugated drive rollers 2.3 from pressure strips 4, which a snug fit of the belly flap of the fish on the side surfaces of a Ensure spreader 5, from a spring-loaded pusher 6 zjm pressing the spine of the fish to the upper edge of the spreader 5 (F i g. 1,5,6) and out Toothed washers 7 and 8 for promoting the fish during the filleting process. A knife system includes behind that Guide flaps arranged one after the other and at an angle of 8 to 10 ° to one another Circular knife 9 for cutting out a strip of meat from the underside of the fish belly and two filleting knives 10 arranged opposite one another, between their cutting edges 11 and the circular knives 9 the spreader 5 is attached. The filleting knives 10 are hollow-cylindrical and open Support rollers 12 mounted. The outer surface of the filleting knife 10 has a taper of, for. B. 4 to 6 ° to a Avoid jamming of the bone structure to be cut out. The cutting edges 11 of the knife 10 are against the movement of the fish body and are equiaxed or concentric to the Side faces 16 of the spreader 5 are arranged. The side surfaces 16 of the spreader 5 are in the area of Cutting edges 11 cylindrical. The distance between the cylindrical surfaces 16 of the spreader 5 and the The cutting edge 11 of the filleting knife 10 corresponds essentially to the maximum thickness of the side bones of the fish to be processed. On the inside of each filleting knife 10 is a bead 13 (Fig. 9) provided, which is intended for mounting the filleting knife 10 on the support rollers 12

The support rollers 12 are supported by the console 14 connected to each other. One of the support rollers 12 is for Ensuring their constant contact between the support rollers and the knife bead 13 of the filleting knife 10 loaded with a spring 15 (Fig. 7) guides 17 guide the cut fish fillets into (not shown) Abführnnnen.

All mechanisms of the device are mounted on a frame 18

The operation of the device for filleting fish is as follows:

A previously decapitated and gutted fish with the tail fin removed becomes with the tail part or the top cut is entered in the guide flaps 1 (in the drawing, the entry of the Fish shown with the tail part ahead), after which the fish is grasped by the transport rollers 2 and in Direction on the spreader 5 is shifted. In front of the spreader 5, from the underside of the Cut a strip of meat off the fish belly with the circular knife 9, which causes the fish to stand up when it is casserole on Jen spreader 5 with the spine resting on this. Furthermore, the fish is fed by the feed rollers 3 detected and fed to the filleting knives 10, the belly flaps of the fish from the pressure strips 4 printed close to the side surfaces 16 (FIG. 8) of the spreader 5. In order to increase the reliability of the Fish transport in the area of action of the filleting knife 10 is the bone structure to be cut out Fish grasped on both sides by toothed washers 7 and 8.

When the fish is pushed through between the support rollers 12 placed on the support rollers 12 with the bead 13 Filleting knives 10, the two fillet halves of the fish are cut free by the cutting edges 11 and separated from the back and the side bones. The cut fish fillets are with the guides 17 in the space between the on the Console 14 arranged support rollers 12 guided and discharged from the device.

For this purpose 2 sheets of drawing a

Claims (3)

Patent claims: 1. Device for filleting decapitated and gutted fish, consisting of conveyor devices and guides for entering and orienting the fish, from behind the guides arranged circular knives for cutting out a strip of meat on the belly of the fish and two filleting knives arranged symmetrically to the main axis of symmetry of the fish, wherein a roof-shaped spreader is provided between the circular knives and the filleting knives and the Distance between the surface of the spreader and the cutting edge of the filleting knife about the Thickness corresponds to the largest pancakes of the fish, characterized in that the filleting knife (10) is designed as a hollow cylinder are mounted and driven on their inside on support rollers (12) and their longitudinal axis parallel to the conveying direction of the fish, with the spreader (5) on the slopes where it is with the Filleting knives cooperating, has a cylindrical surface that is coaxial with the cutting Edges of the filleting knives are formed. 2. Device according to claim 1, characterized in that each fillet knife (10) on the Inner wall a concentric circumferential bead (13) for placing the filleting knife (10) on the support rollers (12). 3. Device according to claim 1 or 2, characterized gekennzeicl. .et that the support rollers (12) by a Console (14) connected to one another and one of the Support rollers (12) to ensure their constant contact between the support rollers (12) and the Bead (13) of the filleting knife \ 10) in the console (14) is resiliently mounted.