JPS5835056B2 - fish fillet skinning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a rotating skinning roller, a conveyor mechanism for adjusting fillets to the appropriate size for the skinning roller, and a cutting blade provided at a predetermined position from the peripheral edge of the skinning roller.
The present invention relates to a fish fillet skinning machine comprising a skinning blade provided with a pressing surface spaced at equal intervals from the periphery of a skinning roller.

Conventional machines for skinning fish fillets have a skinning roller that is uniformly provided with teeth around its periphery.

The tooth surfaces on the periphery of this roller are very narrow, and the gaps between the teeth are relatively wide and deep.

In order to make it easier to insert the skin at the tip of the fish fillet under the stripping blade of the skinning knife, in accordance with West German Publication No. 2523752, the cutting blade of the skinning knife is set in accordance with the direction of rotation of the peripheral edge of the skinning roller. Surfaces are provided in away and facing directions.

This machine has several advantages.

In other words, this machine has a simple structure, does not require a drive source to vibrate the scalpel, and can remove the skin without wasting the meat at the tip of the fillet.

However, this known machine also has some drawbacks.

In other words, compared to skinning machines with interchangeable skinning knives, this skinning machine has thicker meat attached to the peeling skin, so the meat at the tip of the fillet is not lost and the meat is maximized. The consistency of the fish meat achieved by this skinning machine is not satisfactory, since the quality of fish meat that should be obtained is not the same.

This not only reduces the yield of fish meat, but also makes it very difficult or impossible to preserve the silvery layer on the skin side of the fillet with a protective layer underneath, resulting in a loss of skin on the skinned fillets. The appearance is damaged and the body becomes uncoordinated.

Another major disadvantage of this machine is that fillets with thick or scaly skins cannot be skinned at all or reliably.

Moreover, even if a skinning knife (West German Publication No. 2523752) is used, which has a surface that is oriented in the direction in which the skinning roller rotates, the skin will not be visible under the skinning blade of the scalping knife. cannot be entered correctly.

SUMMARY OF THE INVENTION An object of the present invention is to provide a fish fillet skinning machine that can economically peel thin-skinned, thick-skinned fillets, and fillets with many scales without damaging the fillets. .

According to the present invention, a rotating skinning roller, a conveyor mechanism for advancing the fillets in the skinning roller trench, a cutting blade provided at a certain distance from the peripheral edge of the skinning roller, and a skinning roller are provided. a peeling knife provided with a pressing surface spaced at equal intervals from the peripheral edge of the roller, the peripheral edge of the peeling roller having a flat portion for supporting the skin side of the fillet and feeding the fillet; A fish fillet skinning machine is obtained which is provided with groove elements which are relatively narrower than these flat parts and which separate them from each other.

The advantage obtained by this machine is that the skin is evenly supported on the flat part, and you can get a uniform silver mirror on the fish fillet, which increases the production of fish fillets. That's true.

It also ensures that the skin at the end of the preceding fish fillet passes under the stripping blade of the skinning knife, and without delay for all types of fish.

The reason for this is that in conventional skinning machines, the fillet would dance vertically due to the teeth of the skinning roller, but with the machine of the present invention, this does not occur, and the skinning machine rotating under the fillet Because it rides flat on the flat part of the roller,
The skin at the end of the preceding fillet can be placed in one of the grooves and under the scalpel's cutting blade.

The conveyor mechanism may include an endless belt, and a rotating feed roller may be provided between the belt and the skinning roller.

All these elements are known.

The groove can extend in the axial direction of the skinning roller, thereby making it easier to make the skinning roller.

The groove can extend helically around the skinning roller, thereby increasing the contact length with the skin in the case of narrow grooves.

The grooves can also have helical grooves that intersect with each other.

This increases the number of contact points with the skin.

The groove can be configured with a narrow shape.

Thereby, the skin is stretched outward so that it can lie more flat on the flat part of the skinning roller.

The grooves are arranged so that at least a portion of the groove faces the presser surface for any angular position of the skinning roller, in order to be able to place the end of any fillet that reaches the groove into the groove. can be placed.

Preferably, the groove has a bottom narrower than the mouth and opposite side walls tapering away from the mouth.

The depth of the groove should be as shallow as possible than its narrowest width.

This allows the space for introducing the skin to be appropriately sized without causing any collateral effects on the silver square.

The flat part of the skinning roller can be roughened, and the roughening can be done by mechanical, chemical or electrolytic methods.

By making the flat part rough like this,
It is possible to obtain an appropriate coefficient of friction for conveying the fish fillet in contact with the skin without reducing the amount of processing of the fish fillet.

Fine teeth can also be provided on the flat part of the peeling roller.

This will ensure that the skin of the fish fillet, which exhibits great resistance to peeling, is transported.

In the case of feed rollers, this can be achieved by providing them with fine teeth.

This allows the tip of the fish fillet to be more stable, which was the case in the past when the fish fillet went into the skinning knife.

The presser roller can be placed close to the cutting blade of the scalpel.

This makes it possible to automatically align the tip of the fish fillet and thus to ensure that it is placed under the stripping blade of the skinner.

It is advantageous if the guide surface is arranged above the skinning roller at an acute angle to the tangent drawn from the cutting blade of the scalpel to the circumferential shear of the skinning roller.

The guide surface has an edge near the skinning roller slightly transverse to the scalpel's cutting edge, and the guide surface is placed on the back of the scalpel and is configured to curve upwardly.

This configuration makes it possible to reliably feed the fish fillets, ensuring that even in the case of fairly hard 3-year-old salmon, the tips of the fairly hard fillets are placed in one of the grooves between the flat parts of the rollers. The fibrous tissue between the skin and the fillet can be safely separated at the end of the skinning operation.

The safety surface can be rotated about an axis parallel to the axis of the skinning roller in order to make it easier for very hard fillets to get under the cutting blade of the skinning roller and to make skinning more efficient. vibrate at a small amplitude in the direction of feeding the fillet.

The subsequent side walls of the groove can be tilted in a direction opposite to the direction of rotation of the skinning roller.

This further increases the safety level of the initial skinning operation and eliminates the risk of pieces of skin remaining on the meat.

Hereinafter, the present invention will be described in detail with reference to the drawings.

A deflecting roller 11, a feed roller 3 and a skinning roller 2 are journal-coupled in the frame and are driven counterclockwise as indicated by the arrows.

An endless feed belt 1 is placed over a deflection roller 11 and tensioned by a tension roller (not shown).

The feed roller 3 and the peeling roller 2 rotate at a higher circumferential speed than the feed belt 1.

A scalpel 4 is fixed to the frame above the upper half of the skinning roller 2.

The skinning knife 4 has a holding surface 42 arranged at a certain distance from the circumferential surface 21 of the skinning roller 2.

The distance between the cutting blade 41 of the skinning knife 4 or the pressing surface 42 and the circumferential surface 21 of the skinning roller 2 is several tenths of a millimeter.
It is.

The skinning knife 4 moves against the strong pressure of the spring to the skinning roller 2.
It is advantageous to construct the scalpel 4 in such a way that it can be moved away from the circumferential surface of the skin.

On the cutting blade 41 of the scalpel 4, a pressure roller 5 of a monolithic structure or a multilayer structure is provided.

This presser roller is rotated in the direction of the arrow.

The presser roller 5 is constructed so that it can be biased by the force of a spring.

However, instead of this presser roller 50, a guide surface 7 that can rotate around an axis γ1 parallel to the axis of the peeling roller 2 is used.
can be provided.

The circumferential surface 21 of the skinning roller 2 is divided into flat sections 22 by axial grooves 25 .

The surfaces of these flat parts are roughened.

The flat portion 220 surface can be roughened, for example by cutting intersecting knurling 23 or by carving fine teeth 24.

These knurls 23 or teeth 24 hold the skin along the holding surface 42 of the scalpel 4.

The groove 25 has a non-uniform trapezoidal shape, the depth 27 of which is only a fraction of the width 26, and the side wall of the groove opposite to the direction in which the skinning roller 2 rotates. The side wall can be tilted in a direction opposite to the direction of rotation of the roller 2.

The width of the groove 25 can be approximately 5IIIm, and the depth can be approximately 1.5Tr.
rm can be done.

The surface of the feed roller 3 can be provided with fine teeth, and the surface of the presser roller 5 can be provided with shallow depressions.

Next, the operation of this peeling machine will be explained.

The fish fillet, which is placed on the belt 1 so that the skin is in contact with the belt, is sent with its tail in front to the deflection location above the deflection roller 11.

The feed roller 3 then guides the tip of the fillet toward the circumferential surface 21 of the skinning roller 2.

As a result, the thin teeth 31 of the feed roller 3 act to advance the fillet and lift the rear end from the feed belt 1, but since the teeth 31 of the roller are thin and low, the rear end of the fillet moves up and down in the air. It doesn't flop around.

It is assumed that the tip of the fillet guided to the circumferential surface 21 of the roller 20 by the roller 3 comes into contact with the flat portion 22 of this circumferential surface 21.

In this situation, assuming that the feed speeds of rollers 2 and 3 are the same, the tip of the fillet rests in contact with the flat portion 22 and the fillet moves forward.

When the tip of this fillet reaches the front edge 1 of the scalpel 4, the forward edge of the fillet is blocked, but the skinning roller 2 still rotates.

As a result, the tip of the fillet slides relative to the flat portion 22 and falls into the next groove 25.

Therefore, the cutting blade 41 bites into the tip of the fillet that has fallen into the groove 25, and the skin torn off by this blade is delivered between the pressing surface 42 of the skinning knife 4 and the circumferential surface 21 of the roller 2.

Additionally, when the feed speed of roller 2 is faster than the feed speed of roller 3, the tip of the fillet falls into the rotating groove 25 before reaching the front edge of the scalpel 4. Later, it comes into contact with the flat part 22 again, and in this state the fillet is advanced by the flat part 22.

After this, the tip of the fillet falls into the groove 25 that has arrived just before the scalpel, as described above.

For this reason, the cutting blade 41 bites into the tip of the fillet, and the peeled skin is held by the pressing surface 42 provided under the cutting blade 41, so that the cutting blade 41 separates the skin of the fillet from the silver layer. This will allow you to get between the fillets and separate the skin from the fillet.

This operation is ensured when the fish fillet is conveyed forward from the feed belt 1.

The presser roller 5 provided on the cutting blade 41 is
It is especially effective when the fish fillets are placed in individual positions.

When skinning very hard fish fillets, it is advantageous to provide a guide surface 7 instead of the pressure roller 5.

In this case, the skin stripping work can be further improved by vibrating the guide surface in the feeding direction.

As explained above, according to the present invention, the peripheral edge of the skin stripper is divided into a flat portion and a groove element that separates the flat portion from each other, so that the flat portion can be used for skin stripping. The fillet is simply placed and transported just in front of the knife, and the tip of the transported fillet, which is prevented from moving right in front of the scalpel, falls into the groove element of the rotating skinning roller. , the cutting blade can reliably bite into the tip which has sunk into the groove element of this fillet.

According to the present invention, carrying the body does not have to be done on the flat part.

Since the holding and gripping means such as those described above are not required for conveying the fillet with the paring knife 1, the fillet is not damaged, and the cutting blade is designed to bite into the tip of the fillet that has fallen into the groove element. As a result, this cutting blade fits between the skin and the silver layer of the fillet, resulting in a high-quality peeled fillet.

[Brief explanation of drawings]

The accompanying drawing is a schematic perspective view of the skinning machine of the present invention. 2... Peeling roller 3... Feed roller, 4...
... Skin stripper, 5... Presser roller, 7... Guide surface, 11... Deflection roller, 22... Flat part, 2
5... Groove, 41... Cutting blade, 42... Pressing surface.

Claims (1)

[Claims] 1. A rotary stripping roller, a conveyor mechanism for advancing the fillets on the skinning roller 1, a cutting blade provided at a certain distance from the peripheral edge of the skinning roller, and a A peeling blade is provided with a pressing surface spaced at equal intervals from the peripheral edge of the peeling roller, and the peripheral edge of the peeling roller includes a flat part for supporting the skin side of the fillet and feeding the fillet. , relatively narrower than these flat parts;
and a groove element separating their flat parts from each other. 2. The machine according to claim 1, wherein the conveyor mechanism includes an endless belt, and a rotating feed roller is provided between the endless belt and the skinning roller. 3. The machine according to claim 1 or 2, characterized in that the width of the flat portion measured in the direction of the circumference of the skinning roller is a multiple of the width of the groove. A machine that does. 4. A machine according to claim 1, 2 or 3, characterized in that the groove extends in the axial direction of the skinning roller. 5. A machine according to claim 1, 2 or 3, characterized in that the groove extends helically around the skinning roller. 6. The machine according to claim 5, characterized in that the grooves include mutually intersecting spiral grooves. γ A machine according to claim 1 or 2, characterized in that the grooves are grooved. 8. By pressing the button on the machine according to claim 1, 2, 3, 4, 5, 6 or 7,
A machine characterized in that a groove is arranged such that at least a part of the groove faces a presser surface at any angular position of the peeling roller. '9 In the machine according to claim 1, 2, 3, 4, 5, 6, 7 or 8, the groove is narrower than the mouth. A machine having a bottom and opposing side walls tapering towards each other from the mouth, characterized in that the depth of the groove is narrower than its minimum width. 10 The machine according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, A machine characterized by the flat part of the peeling roller being rough. 11. Machine according to claim 10, characterized in that the textured flat portion is produced mechanically. 12 The machine according to claim 10 has a button,
A machine characterized by the fact that the rough and flat parts are created by electrolysis. 13 The machine according to claim 10 has a button,
A machine characterized by the fact that the rough and flat parts are made chemically. 14 Claims 1, 2, 3, 4,
A machine according to item 5, item 6, item 7, item 8, or item 9, characterized in that the flat part of the peeling roller is provided with fine teeth. . 15 Claims 1, 2, 3, 4,
Section 5, Section 6, Section 7, Section 8, Section 9, Section 10,
15. A machine according to claim 11, 12, 13 or 14, characterized in that the feed roller is provided with fine teeth. 16 Claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, Item 12, Item 13, Item 14 Dimensions or Item 1
The machine according to item 5, characterized in that the presser roller is provided in close proximity to the cutting blade of the scalpel. 17 Claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, In the machine according to item 12, item 13, item 14, item 15 or item 16, the circumferential portion 1 of the skinning roller is placed on the skinning roller from the cutting blade of the skinning knife to the circumferential part 1 of the skinning roller. A guide surface is provided at an acute angle to the drawn tangent, the guide surface having an edge adjacent to the cutting edge of the skinning roller, this edge slightly transverse to the cutting edge of the skinning knife. , a machine characterized by being located on the back of the scalpel and curved upwards. 18. The machine according to claim 17, wherein the guide surface is rotatable about an axis parallel to the axis of the skinning roller and is capable of generating small-amplitude vibrations in the direction in which the fish fillets are conveyed. A machine that is characterized by 19 Claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, In the machine according to paragraphs 12, 13, 14, 15, 16, 17, or 18, the rear side of the groove corresponds to the direction of rotation of the skinning roller. is a machine characterized by being tilted backwards in the opposite direction.