JPH0654643A - Automatic gill cutter for salmon or other fishes - Google Patents

Abstract

PURPOSE:To cut off fish gills automatically without hands by fixing a fish and rotating the cutter as the fish is opened its mouth and its upper jaw and lower jaw are held on their positions. CONSTITUTION:The fish body on the fish receiver 3A is fixed with the fish holder 3C and its mouth is opened with the opening holder 3B to hold the positions of its upper and lower jaws. The gill cutter in the gill-cutting unit 5 is allowed to move and rotated to cut off the fish gills.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic gill cutting device such as salmon.

[0002]

2. Description of the Related Art Heretofore, in this type, the following has been done. 1) During the distribution of fresh fish with a head, it is inevitable to cut off the gill part because various bacteria are particularly prone to propagate. 2) In main producing areas such as Shinmaki salmon, the process of gill excision is performed by hand using a kitchen knife. 3) Since this work requires skill and is harsh, it is difficult to secure workers.

[0003]

The problems described in the prior art have the following problems. 1) Skills are required for work, and many skilled workers are required. 2) It is difficult to secure necessary personnel because the work is tough (heavy labor). 3) It is a complicated manual work and it has been impossible to mechanize at all.

The present application has been made in view of the above problems of the prior art, and an object of the present application is to provide the following. 1) Processing work can be performed by anyone other than a skilled worker. 2) The labor of workers can be reduced. 3) Labor and labor can be saved by mechanization and automation. 4) Since the blade is not used directly, safety can be achieved. 5) Since it is not manual work, it is possible to prevent occupational accidents such as tendonitis.

[0005]

In order to achieve the above object, the present invention is as follows. That is,
The thing of this application fixes a fish body such as salmon which is desired to be treated, and also holds a gill for a salmon with an open mouth and a fish body fixing part that holds the positions of the lower jaw and the upper jaw with the mouth open. It is an automatic gill cutting device such as salmon that is composed of a gill cutting part to be cut. In this case, a gill pushing part that pushes the gill treated in the gill excision part in the esophageal direction can be provided. Further, the gill excision portion may be configured such that the lower connection portion, which is a connection portion between the gill arch and the lower jaw in the gill, is cut with a lower bone cutter or the like, and then the gill is cut with a rotating gill cutter. Further, the blade portion of the gill cutter is formed with saw-tooth irregularities, and the tip portion can be configured to have a cutting edge shape.

[0006]

EXAMPLES Examples will be described with reference to the drawings. First, the gill 7A of salmon to be processed will be described. Gill 7
A is located in the mouth 7 of the fish and has a pair of slits for water passage in a generally tapered cartilage shell. The upper end of the gills (the back of the fish) is connected to the head 7B. This portion is referred to as the upper connecting portion 7C. Further, the lower end of the gills (the ventral side of the fish) is connected to the cartilage at the rear end of the tongue of the lower jaw 7D. This portion is referred to as the lower connecting portion 7E.

Furthermore, the final end of the gills is connected to the esophagus 7F. This portion is referred to as a rear connecting portion 7G. The outer surface of the gills is covered with an oxygen exchange organ, and the area around the posterior connection 7G is
It is connected to the body with a membrane 7H1 that seals the internal organs. This portion is referred to as an outer connecting portion 7H. The upper connecting portion 7C is relatively strong because each gill arch 7I is connected to the head and jaw 7B.

In the lower connecting portion 7E, the first gill arch is connected to the lower jaw, and the second gill arch is connected to the rear part of the first gill arch. The third and subsequent gill arches are similar to the second gill arch.
That is, the connection point of each of these gill arches is one position on the posterior part of the tongue.

In the rear connecting portion 7G, the end of the gill is directly connected to the esophagus 7F, but it is not necessary to cut it for processing work. The outer connecting portion 7H is located inside the gill and on the outer membrane of the esophagus 7F, and is located between the gill and the body when viewed from the gill lid side. Therefore, by cutting the upper connecting portion 7C, the lower connecting portion 7E, and the outer connecting portion 7H, the gills can be removed from the body.

The gill obtained by cutting the upper connecting portion 7C, the lower connecting portion 7E, and the outer connecting portion 7H is extremely easy to pull out to the mouth side and to remove it together with the internal organs by splitting it in the later step. This device cuts the gills by inserting the cutting blade from the oral cavity and rotating the cutting blade. The basic structure of the cutting blade is a two-leaf cutting blade protruding from the rotation shaft and its shaft end. The cutting blades are arranged point-symmetrically with respect to the center of the rotation axis.
When inserting the cutting blade through the mouth, the direction of the cutting blade needs to maintain a constant angle with respect to the fish body. It cannot be inserted at any angle.

The insertion can be performed at a position where the angle between the center line connecting the upper connecting portion 7C and the lower connecting portion 7E and the center line of the cutting blade is 90 degrees. Therefore, the rotation stop position is controlled. The cutting blade is 7I between the palate and the first gill arch,
Both the left and right sides are inserted from the inside of the oral cavity to the outside of the gill along the gill lid 7J. At that time, there is a joint connecting the upper jaw 7K and the lower jaw 7L inside the palate, but there is a pocket-shaped hole 7M facing the front.
Therefore, the shape of the cutting blade corresponds.

Since the cutting blade cuts the outer connecting portion 7H at the tip portion, it has a tip-like shape. In addition, the cutting part of the gill part is serrated so as to bite into the gill arch. The fish body size may differ greatly depending on the sex and age. In rotary gill cutting, the outer diameter of the cutting blade is determined by the size of the oral cavity. By providing a difference between the tip diameter and the root diameter of the cutting blade (for example, tip diameter Φ30, root diameter Φ45), it becomes possible to cope with each size.

When the cutting blade is rotated and cut without the above-mentioned treatment, the upper connecting portion 7C is firmly connected to the fish body, so that the displacement (deformation) is small, but the lower connecting portion 7E is cut. Is not cut due to its low rigidity on the fish side. Therefore, first, the lower connection portion 7E with the lower jaw must be cut. The lower connecting portion 7E is present close to the mouth when opened, and can be easily cut with a tool or the like. For automatic insertion of the cutting blade, the target center line of the fish body and the moving center line of the cutting blade must be aligned. Therefore, automatic cutting can be performed by also using the fish body fixing device.

The fish body is streamlined when viewed from above, and the thickness (width) of each part is different. The fixing device has a structure that holds the mouth and the body so that the center line of the fish body becomes a straight line. Since the insertion is performed with the mouth open, the purpose of maintaining this state is satisfied. In addition, it is important to hold down the displacement of the fish body in the horizontal direction and the displacement of the rotation direction. Further, since the surface of the fish body is so-called slimy, the fish body receiver (for example, a ticker plate or the like) and the pressing belt (for example, a rough top or the like) are provided with an uneven surface for preventing slippage.

1 is an automatic gill cutting device such as salmon according to the present invention. Reference numeral 2 is a base composed of a side wall 2A having a predetermined size and a top plate 2B stretched over the side wall. Reference numeral 3 denotes a fish body fixing portion arranged on the left side portion of this table, and 4 denotes a gill treatment portion arranged on the right side portion of this table.

The gill treating section 4 is composed of a gill cutting section 5 arranged at the rear and a gill pushing section 6 arranged at the front. Therefore, the fish body fixing part 3 includes a fish body receiver 3A provided on the top plate 2B in the left-right direction, and the fish body receiver 3A.
It is composed of an opening holding portion 3B arranged at the right end portion of A and a fish body retainer 3C which moves up and down with respect to the fish body receiver 3A. The fish receiver 3A is formed by bending a horizontally long plate in the left and right planes into a gentle U-shape when viewed from the side, and the fish receiver is placed in a lying state.

The opening holding portion 3B has a plate 3B1 extending rightward from the fish receiver 3A and a pair of front and rear support frames 3B2 and 3B3 having a predetermined distance D planted on the plate 3B1.
It consists of and. Therefore, the front support frame unit 3B2
Is composed of an upright vertical bar 3B21 and two upper and lower horizontal bars 3B22 and 3B22 projecting forward from the vertical bar 3B21. Further, the rear supporting frame unit 3B3 is upright vertical bar 3B31. And one horizontal bar 3B32 projecting rearward above the vertical bar 3B31.

The fish body retainer 3C includes front and rear left and right columns 3C1 that are planted behind the fish body receiver 3A, an elevating frame 3C3 that is moved up and down by a cylinder 3C2 along the column 3C1, and to the fish body receiver 3A in the elevating frame 3C3. The lower surface of the facing portion of the rubber belt 3 is pressed at a predetermined distance from the lower surface.
C4 is stretched. Therefore, the fish body 3A has a fish body 7
Place the mouth and open the mouth 7A, lower jaw 7D front support frame unit 3
After locking to B2, the upper jaw 7B is the rear support frame unit 3B3
Lock on. After that, the elevating frame 3C3 can be lowered by the cylinder 3C2, and the fish body 7 can be pressed and fixed from the upper surface by the rubber belt 3C4. The pressing rubber belt 3C4 has a structure that is not easily affected by the slime of fish.

On the other hand, the gill treating portion 4 is arranged on a table 4B which is movable on the top plate 2B by a cylinder 4A in the front-rear direction. The gill cutting portion 5 is arranged on the table 5B which is movable on the table 4B by the cylinder 5A in the left-right direction, and the supporting leg 5C planted on the table 5B.
And a gill cutter 5D supported by the supporting leg toward the inside of the space D in the opening holding portion 3B. The gill cutter 5D includes a gap in the opening holding portion 3B and the fish receiving portion 3D.
It moves without interfering with the gap formed by A and the pressing rubber belt 3C4.

Therefore, the structure of the gill cutter 5D is as follows. A ring-shaped pin guide 5C1 whose opening is supported on the upper end of the supporting leg 5C with its opening facing the opening holding portion 3B, and a groove 5C2 formed in the inner circumferential surface of this pin guide in the circumferential direction
A drive tube 5C3 rotatably pierced through the pin guide 5C1 and an opening holding portion 3B at the tip of the drive tube.
Tip tube 5C4 continuously provided for the spring tube, a spring retainer 5C5 that is rotatably fitted to a substantially central portion of the drive tube 5C3, and a shaft retainer 5C5 is planted toward the opening holding portion at the axial center of the spring retainer 5C5. And a main rod 5C6 configured so that the tip reaches near the tip of the tip tube
A drive pin 5C7 loosely fitted in a groove 5C2 protruding outward from the root of the main rod, a coil spring 5C8 arranged to act back and forth between the tip of the drive tube and the spring retainer, and a main rod 5C6. Link mechanism 5 at the tip of
Lower bone cutter 5C1 connected up and down freely via C9
0, and a pair of left and right gill cutters 5C11 projecting from the tip of the tip tube 5C4 toward the opening holding portion.

In this case, the tip portion 5 of the gill cutter 5C11
The C12 is formed in a cut-point shape in order to cut the outer connecting portion 7H. Further, the blade portion of the gill cutter 5C11 is formed with saw-tooth unevenness 5C13 so as to be bitten into the gill bow. The insertion of the gill cutter 5C11 is configured to align the target center line of the fish body with the movement center line of the cutting blade.

The gill pushing portion 6 has left and right supporting legs 6A planted on the base 4B, a cylinder 6B supported by the supporting legs toward the opening holding portion 3B, and the opening holding portion 3B at the tip of the cylinder. It is composed of a piston 6C supported toward the inside of the space D.

The operation and effects will be described.

[0024]

Since the present invention is configured as described above, it has the following effects. 1) In the main work of gill excision, automatic gill excision is possible without requiring human power. 2) Since it is possible to deal with variations in fish size, there is no need to perform work such as selecting only the same size. 3) It is safe because the fish is never touched during the excision process. 4) Since the process can be speeded up, manpower can be saved. 5) No skilled work is required.

[Brief description of drawings]

FIG. 1 is an overall perspective view.

FIG. 2 is a perspective view of a part of a fish body fixing portion.

FIG. 3 is a plan view in which a part of the above is cut away.

FIG. 4 is a perspective view of a gill cutting portion.

FIG. 5 is an explanatory view in which a part of the above is cut away.

FIG. 6 is an enlarged explanatory view of a main part in which a part of a gill cutting part is cut away.

FIG. 7 is an explanatory diagram of a locus of a cam groove in a gill cutting portion.

FIG. 8 is a vertical sectional view for explaining the operation of the lower bone cutter.

FIG. 9 is a vertical sectional view for explaining the operation of the lower bone cutter.

FIG. 10 is a plan view with a part cut away for explaining the action of the gill cutting part.

FIG. 11 is a plan view with a part cut away for explaining the action of the gill pushing part.

FIG. 12 is a vertical sectional view for explaining the action of the gill cutter.

FIG. 13 is a vertical sectional view for explaining the action of the lower bone cutter.

FIG. 14 is a plan view with a part cut away for explaining the operation of the gill cutter and the lower bone cutter.

FIG. 15 is a plan view with a part cut away for explaining the action of the gill cutter.

FIG. 16 is a side view with a part cut away for explaining the gills.

FIG. 17 is a plan view of a part of the gill part that is crossed.

FIG. 18 is a cross-sectional view taken along the line AA.

FIG. 19 is a perspective view of the entire salmon.

FIG. 20 is a perspective view with the left outer gill lid portion removed.

FIG. 21 is a perspective view with the central portion of the gill arch and the gill lobe portion removed.

FIG. 22 is a perspective view in which the gills are cut and removed.

FIG. 23 is a side view with the gill lid portion removed.

FIG. 24 is an explanatory diagram showing a cut portion.

[Explanation of symbols]

 1 Automatic gill cutting device such as salmon 2 units 3 Fish body fixing part 4 Gill processing part 5 Gill cutting part 6 Gill pushing part

Claims (4)

[Claims] 1. A fish body fixing part for fixing a fish body such as a salmon which is desired to be treated, and holding the positions of the lower jaw and the upper jaw with the mouth opened, and a gill for the salmon etc. with the mouth opened. An automatic gill excision device such as salmon, which is composed of a gill excision part to be cut. 2. The automatic gill cutting device for salmon or the like according to claim 1, further comprising a gill pushing part that pushes the gill treated by the gill cutting part in the esophageal direction. 3. The gill excision part is configured such that the lower connection part, which is a connection part between the gill arch and the lower jaw in the gill, is cut with a lower bone cutter or the like, and then the gill is cut with a rotating gill cutter. Alternatively, an automatic gill excision device such as salmon according to claim 2. 4. The automatic gill cutting device for salmon or the like according to claim 3, wherein the blade portion of the gill cutter is formed with saw-like irregularities, and the tip portion is formed in a cutting shape.