JP2002191285A - Method for removing abdominal meat of fish body and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for easily and accurately remove the abdominal meat of bonito in the form of a single fillet having excellent commercial value without dividing the meat into two. SOLUTION: The transfer starting ends of a pair of right and left clamping belts are placed close to the delivery opening end of a bonito-introducing chute, a rod-liked horizontal lower guide is placed in the middle of the lower ends between these clamping belts, the tip end of the guide is placed close to the delivery opening end of the chute and a pair of right and left semifillet knives are placed in front of the transfer starting end of the clamping belt interposing a small gap therebetween. When the beheaded bonito supplied to the chute is transferred with the clamping belts, the bonito body is thrust with the lower guide from the upper end of the abdominal cavity to the anus of the bonito and the upper ends of both side belly parts of the bonito are cut before removing the guts to obtain a single abdominal meat by transferring the bonito along the lower guide to the semifillet knives while keeping the bonito in a forwardly inclined state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for resection of fish with a head cut, in particular, a fish body for cutting a bonito girdle into two pieces without dividing it into two pieces, and an apparatus for carrying out the method. It is about.

[0002]

2. Description of the Related Art Conventionally, a fillet machine has been widely known as a fish processing apparatus having a head removed. This device has a pair of left and right holding belts that hold and transport the fish,
A lower guide disposed between the holding belts to guide the fish body toward the transport end; a lower cutter for abdominal cavity opening abdominal cavity abdomen arranged sequentially from the transport start end to the transport end of the gripping belt; It is composed of a removal pulley, a semi-fillet knife for resection of a gastric cavity, and a fillet knife for cutting fish into a fillet state.

[0003] The fish body is conveyed along a lower guide while being clamped by a clamping belt, and after the abdominal cavity is opened by a lower cutter for abdominal cavity opening provided during the conveyance, the internal organs are scraped off by an internal organ removing pulley, and then the semi-organ is removed. The fillet knife is used to cut off the belly, and then the spine is removed using a fillet knife and cut into three pieces to separate the left and right body.

[0004]

However, according to the above fish processing apparatus, first, the abdominal cavity of the fish is divided into both sides by a lower cutter for abdominal cavity opening, and the abdominal cavity is cut off from the fish by a semi-fillet knife. because there is,
The abdomen is split into two pieces. When the belly cup is divided into two pieces as described above, there is a problem that not only the time is required when cooking the belly cup as food but also the commercial value is significantly reduced. In particular, when the fish is bonito, unnecessary gullets in the production of bonito are removed, but despite the fact that the gullets of bonito can be cooked as high-fat and tasty food, As a result, there is a problem that the merchandise value is reduced and sales are difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and an object of the present invention is to provide a method for resecting a fish body with a single body without dividing the body into two pieces. It is to provide an apparatus for performing the method.

[0006]

In order to achieve the above object, a method for resecting a ventilated fish according to the present invention is characterized in that a fish body whose head has been cut is fed to a feeding chute. The fish body is carried by the holding belt toward the lower guide having a leading end facing the delivery end of the delivery chute, and the lower guide is pierced into the abdominal cavity of the fish body so that the leading end slides on the upper wall of the abdominal cavity while the anus. The fish body is held in a forward leaning posture by penetrating the lower body, and in this state, the fish body is conveyed to the pair of left and right semi-fillet knives on the lower guide, and the semi-fillet knives are cut off by the semi-fillet knife before removing the internal organs of the fish body. It is characterized by doing.

According to a second aspect of the present invention, there is provided an apparatus for carrying out the above method, wherein a pair of right and left holding belts for holding and transporting the fish body, and a delivery end facing the transport start end of the holding belt. The fish body is held in a forward leaning position by piercing the abdominal cavity of the fish body from the upper end of its front end face to the anus with the tip facing the sending end of the fish feeding chute, which is disposed between the fish feeding chute and the holding belt, and holding the fish body at the forward end. And a pair of right and left semi-filled knives for cutting off the fish vents from both sides of the lower guide holding the forwardly inclined posture.

According to the third aspect of the present invention, in the third aspect of the present invention, the fish feeding chute has a guide groove for receiving the abdominal cavity of the fish, and the fish feeding side faces downward. The bottom of the chute is formed on the inclined portion, and both side guide plates are disposed on both sides of the bottom of the chute and guide both sides of the fish body in a sandwiched state. The interval is adjustable according to the size of the fish body, and the height position of the chute bottom is adjusted in synchronization with the interval adjustment between the guide plates on both sides.

According to a fourth aspect of the present invention, there is provided a pressing means for pressing the back of the fish body on the cutting head side upward between the delivery end of the delivery chute and the pair of left and right semi-filled knives. It is characterized by being.

[0010]

When the fish body with its head cut is supplied to the feed chute with the head cut surface directed in the transport direction and the back part facing upward, the fish body is transported forward while being clamped by the clamping belt. At this time, when the fish is clamped at the transport start end of the holding belt, the tip of the lower guide pierces the front end surface of the abdominal cavity of the fish, and as the fish is transported forward by the sandwiching belt, the tip of the lower guide moves into the abdominal cavity. After its tip abuts against the upper wall of the abdominal cavity, slides along the upper wall toward the anus of the fish,
The state protrudes from the anus.

The upper wall surface of the abdominal cavity of the fish is gently curved downward from the front end surface of the abdominal cavity on the side of the cut surface of the head toward the anus. Therefore, the tip of the lower guide is moved forward by the clamping belt as the fish is transported forward. As described above, when the upper wall surface of the abdominal cavity is relatively moved from the front end surface of the abdominal cavity toward the anus of the fish body, the cut side of the head of the fish body is displaced downward, so that the lower body is in the forward inclined posture, and the lower guide is in the abdominal cavity front end surface. When the fish penetrates the anus from the upper end of the fish body, the fish body is supported on the lower guide in the forwardly inclined posture.

[0012] The conveying speed of the sandwiching belt for sandwiching and transporting the fish body forward is high, so that the processing step in which the lower guide penetrates from the upper end of the front end face of the abdominal cavity of the fish body to the anus as described above is instantaneously completed. The fish body is conveyed to the semi-fillet knife side by the lower guide while maintaining its forward leaning posture, and the semi-fillet knife cuts the upper ends of both sides of the belly of the fish without dividing the belly into left and right. The abdomen is resected with the flank connected. In this manner, the fish body from which the belly of the fish body has been removed is continuously transported to the processing unit side for removing internal organs by the holding belt and processed.

[0013] The height and thickness of the fish to be subjected to abdominal resection vary depending on its size. Therefore, the fish feeding chute is provided with a guide groove for receiving the abdominal cavity of the fish. Consisting of a chute bottom having both side guide plates that guide both sides of the fish body in a sandwiching state, when processing a large fish body, widen the gap between both side guide plates and simultaneously move the chute bottom downward,
When processing small fish, narrow the gap between the guide plates on both sides and at the same time move the bottom of the chute upward so that the tip of the lower guide always pierces the upper end of the fish's front end face that is in contact with the spine accurately. It is configured as follows.

Further, above the delivery end of the delivery chute and the pair of left and right semi-fillet knives,
As described in the above, there is provided a pressing means for pressing the back of the fish body on the side of the cutting head downward, the pressing means penetrates on the lower guide, the front end side of the spine of the fish body supported by the lower guide. By pressing against the upper end, the upper end of the belly bath of a fish body leaning forward is cut off with a semi-fillet knife with good yield and accuracy.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the present invention will be described with reference to the drawings. In FIG. 1 to FIG. 3, a bonito (hereinafter referred to as fish body B) whose head and tail are cut off at a predetermined interval in the width direction of the machine A at a central portion on the machine A.
A pair of left and right endless holding belts 1 and 1 for holding and transporting the front side are provided, and a fish body is provided on the rear end side of the machine A, that is, on the transport start end side of the holding belts 1 and 1. B
A feed chute 2 is provided for supplying the feed chute between the conveying start ends of the holding belts 1, 1, and the front end of the feed opening of the feed chute 2 faces the conveying start end of the holding belt.

Further, a horizontal lower guide 3 which is long in the front-rear direction and parallel to the lower end edge of the holding surfaces is fixedly provided at the center between the opposing holding surfaces of the holding belts 1 and 1. The horizontal lower guide 3 has a rear-side length portion from a small-diameter round bar material to a bar-shaped portion extending from the front end (rear end) to the vicinity of a pair of left and right semi-filled knives 4 described later.
3a and the front end thereof is formed in a hemispherical convex end surface, and this front end is projected from the space between the conveyance start ends of the holding belts 1 and 1 into the front end of the feed chute 2 at the delivery opening.

The feeding chute 2 is an abdominal cavity B1 of the fish body B.
A chute bottom 2A having a U-shaped cross-sectional guide groove 2a for receiving the lower surface of the chute, and a chute bottom 2A
And two side guide plates 2B, 2B which are arranged on both sides of the fish body B and guide both sides of the fish B in a sandwiched state. Further, the chute bottom 2A has a rear portion which is a feeding side of the fish body B formed in a horizontal portion, and a front portion formed in an inclined portion inclined obliquely downward from the horizontal portion. It is arranged between the center portions of the guide plates 2B, 2B in the height direction, and the front of the inclined portion is projected downward from between the guide plates 2B, 2B on both sides, and the protruding end is located below the tip of the lower guide 3. Are positioned at a predetermined interval.

On the other hand, as shown in FIGS. 3 and 4, the guide plates 2B, 2B on both sides have a rectangular shape having a fixed length in the front-rear direction and disposed on both sides of the chute bottom 2A with the chute bottom 2A at the center. Above the horizontal base plates 5a and 5b, the upper end portions thereof are inclined from the upper end edge to the lower end edge in such a direction as to gradually narrow the opposing surfaces thereof. Specifically, the front and rear support leg pieces 6a and 6b are erected and fixed on the front and rear portions of the horizontal bases 5a and 5b on both sides, respectively.
Horizontal shafts 7a, 7b long in the front-rear direction are rotatably supported between upper ends of 6a, 6b, and upper end edges of both side guide plates 2B, 2B are fixed to the horizontal shafts 7a, 7b.

Furthermore, the central portions of the horizontally long rectangular plate-like rotating rods 8a and 8b are fixed to the rear ends of the horizontal shafts 7a and 7b on both sides, and the opposing inner parts of these rotating rods 8a and 8b are fixed. Pins that are overlapped with each other and protrude from a horizontally long hole 81 provided in one pivoting rod 8a in the overlapping portion at the other pivoting rod 8b.
By slidably inserting and locking the 82, these rotating rods 8a, 8b are combined so as to be tiltable by the same angle in the vertical direction about the horizontal shafts 7a, 7b.

The outer end of one pivoting rod 8a and the one horizontal support base 5a are connected by a tension spring 9 and the lower surface of the outer end of the other pivoting plate 8b is connected to a stopper 10 In the normal state, the pin 82 connecting the both-side rotating rods 8a and 8b to each other by the tension of the tension spring 9 in an engaged state.
Are urged in the direction of moving upward about the horizontal shafts 7a and 7b, and the lower surface of the outer end of the other rotating rod 8b is received by the stopper 10 so that the two rotating rods 8a and 8b The guide plate 2B is kept horizontal, and the distance between the opposing surfaces of the guide plates 2B, 2B is kept to a minimum width.

Further, projecting pieces 11a, 11b are respectively provided on the front and rear lower surfaces of the horizontal base plates 5a, 5b so as to project from the lower ends of the projecting pieces 11a, 11a on the front side of the horizontal base plates 5a, 5b and the feeding chute. The upper and lower ends of connecting rods 12a, 12a formed of turnbuckles are rotatably connected to the lower surface of the front of the chute bottom 2A, respectively.
The upper and lower ends of the connecting rods 12b, 12b formed of turnbuckles are rotatably connected to the lower ends of the rear projecting pieces 11b, 11b and the rear lower surface of the chute bottom 2A of the feeding chute 2 respectively. .

Therefore, when the horizontal base plates 5a, 5b are parallel to each other and the distance between the base plates is reduced, the two side guide plates 2B, 2B attached to the rotating rods 8a, 8b are spaced from each other. At the same time as approaching the narrowing direction, the chute bottom 2A is lifted up through the connection space 12a, 12b, and when the distance between the horizontal base plates 5a, 5b on both sides is reduced, the guide plates 2B, 2B on both sides,
The chute bottom 2A is configured to drop downward in synchronization with the separation of the chute 2B when the chute bottoms 2B are separated from each other in a direction to increase the gap therebetween. That is, in the case of a large fish B, as shown in FIG. 6, the space between the guide plates 2B, 2B is widened, and at the same time, the chute bottom 2A is lowered.
As shown in FIG. 7, when the distance between the guide plates 2B on both sides is reduced, the chute bottom 2A is raised in synchronization with the guide plate 2B, and the fish body B is raised.
The distal end of the lower guide 3 is configured to accurately pierce the upper end of the front end surface of the abdominal cavity in the cut surface of the head.

The means 20 for adjusting the distance between the guide plates 2B, 2B in the feeding chute 2 in accordance with the size of the fish B and adjusting the height of the chute bottom 2A in synchronization with the distance adjustment is shown in FIG. As shown in FIG. 5, the right screw 21a and the left screw 21b are set on the machine A with their lengths directed in the width direction of the machine A.
Are rotatably supported, and the moving tables 22a, 22b are screwed into the left and right screws 21a, 21b of the screw rod 21, respectively, and are erected on these moving tables 22a, 22b. The upper ends of the fixed support members 23a and 23b (shown in FIG. 1) are integrally fixed to the lower surfaces of the horizontal base plates 5a and 5b, respectively. By rotating, the movable tables 22a and 22b screwed to the left and right screws 21a and 21b are moved in a direction of coming and going from each other,
The chute bottom portion 2A of the feeding chute 2 and the guide plates 2B, 2B on both sides are configured to be adjustable as described above via the horizontal base plates 5a, 5b supported on the moving tables 22a, 22b, respectively.

On the other hand, the horizontal lower guide 3 has a front half portion continuous with the rear half bar portion 3a and a horizontal plate portion having a rectangular shape having a vertically long section.
3b (shown in FIG. 12), a slit penetrating between both side surfaces at the tip of this horizontal plate portion 3b connected to the rod portion 3a.
13 are provided. A pair of right and left semi-filled knives 4 and 4 are provided on both sides of the horizontal plate portion 3b provided with the slits 13 and are combined in a front C-shape to cut off the abdominal cavity b1 of the fish B from both sides. The upper peripheral ends of these semi-fillet knives 4 and 4 are inserted into both sides of the slit 13 in abutting condition.

In the upper part between the feeding chute 2 and the semi-fillet knives 4, 4, the spine of the cutting head side of the fish B is pressed downward as shown in FIG.
Pressing means 30 for pressing the front end side of b3 onto lower guide 3
Are arranged. The pressing means 30 supports the upper end of an inclined rod 31 inclined obliquely forward toward the semi-fillet knives 4, 4 above the machine base A so as to be rotatable by a shaft 32, and is connected to the shaft 32. Pulleys 33 and 34 are attached to the lower end of the inclined rod 31 and
Is rotatably supported, and a presser belt 35 wrapped endlessly between these pulleys 33 and 34 can be circulated along the outer peripheral end surface of a guide plate 36 fixed to the inclined rod 31. The inclined rod 31 is biased by a spring or other means in a direction in which the lower end approaches the lower guide 3 side.

The apparatus B for resection of fish B, which is constructed as described above, is an apparatus for resection of only the gastrointestinal b1 as a single piece without dividing it into two pieces. A machine integrated with the pre-partitioning machine will be briefly described. FIG. 8 is a simplified vertical cross-sectional side view of the machine, in which the internal organ removing pulleys 14 are provided at predetermined intervals from the semi-fillet knives 4, 4 from the transport start end side to the end side (front side) of the sandwiching belts 1, 1. A slitting knife 15 that cuts the abdomen along the lower end of the spine to the tail cutting end, and a pair of left and right side line cutting cutters 16 and 16 that slit between the back and the abdomen of the fish B from both sides toward the spine. They are arranged sequentially.

Further, the lower guide 3 is used as a first lower guide along the space between the opposing holding surfaces of the holding belts 1, 1, from the end (front end) of the lower guide 3 to the upper front edge of the split knife 15. A second lower guide 17 which is inclined upward toward the front end while reaching is provided.
A third horizontal lower guide 18 is provided from the upper front peripheral edge of the second lower guide 17 to the discharge end. In addition,
The pair of left and right sandwiching belts 1 and 1 can be circulated and operated in a horizontal direction between a driving pulley 19a pivotally supported on both sides of the front end of the machine frame A and a driven pulley 19b pivotally supported on both sides of the rear end. Has been passed over. The holding belts 1, 1
Are divided into upper and lower clamping belt portions, and the side line cutting cutters 16 and 16 are separated through gaps between these belt portions.
Are projected into the space between the holding belts 1 and 1.

A drive motor 40 is provided at an appropriate position of the machine frame A, and the drive motor 18 appropriately drives an endless belt or an endless chain and a pulley or a wheel passing over the endless belt or the endless chain. The pair of left and right sandwiching belts 1, 1 via a rotation transmission mechanism
And the semi-filly knives 4 and 4, the internal organ removing pulley 14, the split knife 15 and the side line cutting cutters 16 and 16 are simultaneously rotated at a constant rotation speed. .

Next, a description will be given of the operation of the fish B resection device for fish B constructed as described above and the pre-partitioning machine for fish B provided with this device. 1 and the processing means from the semi-filly knives 4 and 4 to the side line cutting cutters 16 and 16 are simultaneously driven. The fish body (bonito) B has its head and tail cut off in advance, and the fish body B is inserted into the feeding chute 2 with the cut surface of the head facing the transport direction (forward) and the back part facing upward.

At this time, the fish body B is fed by grasping the cut tail side of the fish body B by hand, and the chute bottom 2A of the chute 2 is sent.
When the fish is fed forward while sliding its abdomen from above the horizontal portion onto the guide groove 2a of the inclined portion, the fish body is directed obliquely downward on the inclined portion of the feed chute 2 by the inclined surface. The feeding chute 2 is held in a tilted posture, and the sides of the feeding chute 2 are sandwiched between the opposing surfaces of the guide plates 2B, 2B so that the back is vertically upward.

In this state, when the fish B is fed into the conveying start end of the holding belts 1 and 1 by hand, the fish B is held by the holding belts 1 and 1 and at the same time, is drawn forward and the feeding chute 2 is moved. Immediately before leaving the front end opening, the spine at the upper end of the front end surface of the abdominal cavity opened by the cut surface of the head of the fish B as shown in FIG.
The distal end of the lower guide 3 pierces the lower vicinity portion of b3.

A stopper 61 having a bifurcated upper end is provided below the distal end of the lower guide 3 so as to be able to move up and down freely, and the bifurcated upper end 61a is connected to the distal end of the lower guide 3. It is located on both sides, and when fish B is sent at intervals of a certain time (for example, 1 second) or more,
The stopper piece 61 is moved down to pass the fish B, and if the feeding interval is within the above-mentioned time, the fish B is maintained in the standing state and the feeding is stopped until the time elapses. .

The fish body B to which the tip of the lower guide 3 pierces
The position of the front end face of the abdominal cavity, that is, the distance between the tip of the lower guide 3 and the downward inclined end of the chute bottom 2A is determined in advance according to the size of the fish B in the chute bottom of the feeding chute 2 in advance.
The lower guide 3 pierced at the upper end of the front end face of the abdominal cavity of the fish body B is set by adjusting the vertical position of the upper and lower guides 2A and the distance between the guide plates 2B and 2B. As the fish B is transported forward, it relatively rushes into the abdominal cavity b2, and its tip abuts on the upper wall surface b4 of the abdominal cavity b1 and slides on the upper wall surface b4 as shown in FIG. Penetrate into.

At this time, the upper wall surface b4 of the abdominal cavity b2 of the fish B is curved in a gentle convex arc shape inclined downward from the front end face of the abdominal cavity b2 toward the anus b5. Even if the size is large and the piercing part of the lower guide 3 is shifted downward from the upper end of the front end face of the abdominal cavity, the tail side of the fish body B is moved until the tip of the lower guide 3 slides on the upper wall surface b4 and reaches the anus b5. The upper part of the front end face of the abdominal cavity, which is lifted upward, that is, the spine b3 exposed on the cut surface of the head comes into contact with the lower guide 3, or comes into a very close state.

As described above, the lower guide 3 penetrates from the upper end of the front end face of the abdominal cavity of the fish B to the anus b5, and the fish B holds the whole abdominal cavity in a predetermined forward leaning posture in which it is suspended downward from the lower guide 3. Then, the fish B is instantaneously sent to the semi-fillet knives 4 and 4 while penetrating the lower guide 3. At this time, the back of the cutting head side of the fish B is pressed downward by the distal end surface of the pressing belt 35 in the pressing means 30 disposed above the semi-fillet knives 4 and 4, and the spine b3 The front end side is pressed onto the lower guide 3, and the lower guide 3 retains a state in which the lower guide 3 accurately penetrates from the front end of the upper wall surface (the lower surface of the spine b 3) to the anus b 5 in the front end surface of the abdominal cavity of the fish B, 1 to the semi-fillet knives 4 and 4, and as shown in FIG.

When the fish B is cut at the upper end of the belly vent on both sides thereof by the semi-fillet knives 4 and 4, the belly vent b1 is formed as a single body in which both sides are integrally connected via the lower abdomen. It falls downward and is accommodated in an accommodation box (not shown) arranged below. On the other hand, the fish body B from which the abdominal cavity b1 has been removed is conveyed to the viscera removal pulley 14 side by the holding belts 1, 1 while riding on the plate portion 3b of the lower guide 3,
The internal organs in the abdominal cavity b1 are scraped off by the internal organ removing pulley 14.

In this way, the fish body B from which the abdominal cavity b1 and the internal organs have been removed continues to maintain the forward leaning posture.
1, the lower guide 3 is used as a first lower guide and reaches the next second lower guide 17. The second lower guide 17 is configured to be rotatable in the vertical direction, and a back holder 51 of the fish B is disposed above the second lower guide 17 so as to be able to move up and down. The fish B passes over the second lower guide 17. At this time, the second lower guide 17 rotates downward until it is horizontal, and the back retainer 51 moves down, so that the fish B passes over the split knife 15 while being corrected from the forward inclined posture to the horizontal posture. I do.

While the fish B passes over the split knife 15, the abdomen after the anal part of the fish B is cut open along the lower edge of the spine b3 to the left and right by the split knife 15, thereby forming a third horizontal lower guide. The lower edge of the spine b3 is slid on the second horizontal guide 18 while the lower edge of the spine b3 is slid thereon. , 16, the fish B is cut horizontally at both sides of the boundary between the back and the abdomen, and is subjected to preparatory processing for obtaining male and female knots of bonito, and then the transporting end of the clamping belts 1, 1 Is discharged from

In the above embodiment, a method of performing a pre-partitioning process for dividing the fish (bonito) from which the belly plant b1 has been removed into male and female knots, which are the raw materials of the bonito, as described above, will be described. However, after excision of the fish body belly b1 as one piece, processing other than such pre-partitioning processing may be performed continuously, or the processing may be shifted to another processing step.

[0040]

As described above, according to the first or second aspect of the present invention, the fish body whose head has been cut is supplied to the feeding chute, and the tip end is attached to the feeding end of the feeding chute by the holding belt. The fish body is carried toward the lower guide facing, and by penetrating the lower guide into the abdominal cavity of the fish body, the tip is slid into contact with the upper wall surface of the abdominal cavity so as to penetrate to the anus and hold the fish body in a forward leaning posture, In this state, the fish is transported to the pair of left and right semi-fillet knives on the lower guide, and before the viscera is removed by the semi-fillet knife before removing the viscera of the fish, the fish are sent at regular intervals. By feeding to the chute, the upper ends of both sides of the fish are cut off by a pair of left and right semi-filled knives at the conveyance start end side of the sandwiching belt, and the belly cups on both sides are lowered. In which it is possible to obtain the ventral mandatory superior piece of commercial value continuous integral in parts.

Furthermore, at the time of resection of the above-mentioned fish body,
When the tip of the lower guide is pierced into the abdominal cavity from the upper end portion of the front end surface of the abdominal cavity of the fish, the upper wall surface of the abdominal cavity is gradually curved downward from the front end surface of the cut side of the head toward the anus. Therefore, it is possible to positively correct the fish body to a predetermined forward leaning posture while abutting the tip of the lower guide on the upper wall of the abdominal cavity and slidingly contacting the upper wall surface, so that the size of the fish body is slightly larger or smaller. Even if it occurs, the lower guide can correct and hold the upper end of the abdominal cavity in a forwardly inclined posture that can be cut accurately, and the semi-fillet knife can cut off the abdominal cavity with good yield.

According to the third aspect of the present invention, the fish feeding chute has a guide groove for receiving the abdominal cavity of the fish and is formed in an inclined portion in which the fish feeding side is inclined downward. It consists of a chute bottom and both side guide plates arranged on both sides of the chute bottom to guide both sides of the fish in a sandwiched state, and the distance between the both side guide plates is adjustable according to the size of the fish. In addition, since the height position of the bottom of the chute is adjusted in synchronization with the adjustment of the distance between the guide plates on both sides, when processing a large fish body, the distance between the guide plates on both sides may be increased. At the same time, move the bottom of the chute downward, and when processing small fish, narrow the gap between the guide plates on both sides and simultaneously move the bottom of the chute upward so that the tip of the lower guide is always It can be adjusted to penetrate exactly into the upper end portion in contact with the spine in the ventral 須前 end face of the body.

Furthermore, according to the fourth aspect of the present invention, the pressing means for pressing the back of the cutting head side of the fish body downward above the sending end of the feeding chute and the pair of right and left semi-fillet knives. Since the fish body is disposed, the pushing means pushes the front end side of the spine of the fish body penetrating and supported on the lower guide against the upper end of the lower guide, thereby correcting the fish body to a more accurate forward leaning posture, and maintaining this posture. While the semi-fillet knife is used, it is possible to make accurate and good yield.

[Brief description of the drawings]

FIG. 1 is a simplified side view of an abdominal resection device;

FIG. 2 is a simplified plan view thereof,

FIG. 3 is a simplified perspective view thereof,

FIG. 4 is a simplified rear view of a feed chute position adjusting means,

FIG. 5 is a simplified plan view showing a mechanism for adjusting the interval between the left and right horizontal bases,

FIG. 6 is a simplified rear view showing a state where a large fish has been sent in;

FIG. 7 is a simplified rear view showing a state in which a small fish has been sent in;

FIG. 8 is a simplified vertical side view of the entire pretreatment machine,

FIG. 9 is a simplified vertical cross-sectional front view showing a state where a fish body is fed to a chute;

FIG. 10 is a simplified side view immediately before the tip of the lower guide pierces the abdominal cavity of the fish,

FIG. 11 is a simplified side view showing a state penetrating the abdominal cavity;

FIG. 12 is a simplified longitudinal front view of a state in which the abdomen is cut off as a single object;

FIG. 13 is a simplified side view showing a state immediately before the resection.

[Explanation of symbols]

1 sandwich belt 2 infeed chute 2A chute bottom 2B on both sides guide plate 3 lower guide 4 Semi fillet over the knife 14 gutting pulley B fish b1 Hara須b2 intraperitoneal b3 spine b4 upper wall surface b5 anal B ₂ backbone

Claims (4)

[Claims] 1. A fish body whose head has been cut is supplied to a feed chute, and the fish body is carried by a holding belt toward a lower guide having a tip end facing the feed end of the feed chute, and the lower guide is abdominal cavity of the fish body. By piercing inside, the tip is penetrated to the anus while sliding the tip against the upper wall of the abdominal cavity to hold the fish in a forward tilted posture, and in this state the fish is transported to the pair of left and right semi-filled knives on the lower guide. A method for resecting a gastric respiratory tract comprising removing the viscera with the semi-fillet knife before removing the viscera of the fish. 2. A pair of left and right sandwiching belts for sandwiching and transporting a fish body, a fish feeding chute having a delivery end facing a transport start end of the sandwiching belt, and a tip disposed between the sandwiching belts and having a leading end. A lower guide that holds the fish in a forward leaning position by piercing the abdominal cavity of the fish from the upper end of its front end face toward the anus while facing the delivery end of the fish feeding chute, and a fish belly on the lower guide that holds the forward leaning posture And a pair of right and left semi-fillet knives for cutting fish from both sides. 3. A fish feeding chute having a guide groove for receiving an abdominal cavity of a fish body and a chute bottom formed on an inclined portion having a fish feeding side inclined downward, and a chute bottom formed on both sides of the chute bottom. A guide plate is provided which guides both sides of the fish body in a sandwiched state. The distance between the guide plates can be adjusted according to the size of the fish body, and the space between the guide plates is provided. 3. The apparatus according to claim 2, wherein the height position of the chute bottom is adjusted in synchronization with the adjustment. 4. A pressing means for pressing a back of a fish body on a cutting head side downward between a delivery end of a delivery chute and a pair of left and right semi-filled knives is provided. The apparatus for resecting a ventricle of a fish body according to claim 1.