JPH0215183B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a dorsal and ventral alignment device for fish bodies, which aligns fish bodies supplied in a horizontal position with their backs down and their bellies up.

BACKGROUND TECHNOLOGY During a certain stage of processing a fish body, it may be necessary for subsequent processing to convert the fish body supplied in a horizontal position to a position with its back facing down and its belly facing up. .

In such cases, conventionally, a complicated mechanism is used to perform dorsal and ventral alignment processing. Therefore, manufacturing costs are high, breakdowns are likely to occur, and maintenance and inspection are required.

Problems to be Solved by the Invention The purpose of the present invention is to solve the above-mentioned technical problems,
To provide a fish body dorsal and ventral alignment device which has a simple configuration and is capable of reliably aligning the dorsal and ventral sides of a fish body.

Means for Solving the Problems According to the present invention, the fish body conveying surface of the supply trough that supplies the fish body with the fish body in a horizontal position is inclined downward as it goes downstream in the direction of conveyance of the fish body, and the cross section perpendicular to the axis is formed roughly in a V-shape, and a notch is formed at the downstream end of the supply trough in the conveyance direction, symmetrical with respect to the axis of the supply trough, opening toward the downstream side, and widening toward the downstream side. The peripheral edge of this notch is inclined inward, and a receiving trough is provided below the notch to receive the fish body, so that when the fish body passes through the notch and falls from the notch to the receiving trough, This is a dorsal-ventral alignment device for a fish body, which is characterized in that the fish body is rotated in the girth direction and converted into a posture with the back down and the belly up.

Effect According to the present invention, fish bodies are conveyed along the V-shaped fish conveyance surface of the supply trough. When this fish body passes through the notch formed at the downstream end of the supply trough in the conveyance direction, the fish body rotates in the girth direction, changes its posture to a posture with its back down and its belly up, and is placed in the receiving trough. Fall into the trough.

Embodiment FIG. 1 is a perspective view of an embodiment of the present invention.
The fish body dorsoventral alignment device 1 includes a supply trough 2 that supplies the fish body F, a receiving trough 3 that is disposed below the downstream end of the supply trough 2 and is formed integrally with the supply trough 2. and a fish body sideways tilting means 4 disposed near the downstream opening of the receiving trough 3. The supply trough 2 has a fish conveyance surface 5 on which the fish F dropped into the supply trough 2 are conveyed, and this fish conveyance surface 5 is formed roughly in a V-shape and has a predetermined angle S. A notch 6 is formed at the downstream end of the fish transport surface 5. This notch 6 is formed to open toward the downstream side and to become wider toward the downstream side. The peripheral edge of the notch 6 is chamfered with guide surfaces 7a and 7b on the side of the transport surface 5, and the guide surfaces 7a and 7b are formed symmetrically with respect to the axis l1 of the fish transport surface. Further, on the downstream side of the supply trough 2, a nozzle 16 is arranged that spouts water at a constant amount into the supply trough 2. As will be described later, the receiving trough 3 is formed with a roughly U-shaped receiving surface 8 that receives the fish F with its back 15 facing downward and supplies the fish body sideways to the means 4. The fish body sideways tilting means 4 includes an L-shaped guide plate 9 provided at the downstream end of the receiving trough 3, one end of which is attached to the downstream end of the receiving trough 3, and the other end directed inward. A curved abdominal pressing piece 10 and a downstream end of the receiving trough 3 and the abdominal pressing piece 1
0, and a plurality of guide protrusions 12 provided on the bottom 9a of the guide plate 9 on the downstream side of the abdominal pressure piece 10 and the back pressure piece 11. The guide protrusions 12 are parallel to each other, and are inclined toward the side 9b of the guide plate 9 toward the downstream side.

FIG. 2 is a simplified plan view of the fish F, and FIG. 3 is a cross-sectional view of the fish F on the fish transport surface 5 in the axial angular direction. The fish body F on which the dorsal and ventral alignment process is performed by this fish body dorsal and ventral alignment device 1 is a so-called asymmetrical fish body in which the width a of the abdomen 14 is larger than the width b of the back part 15. Prior to dropping such a fish body F into the supply trough 2, water is sprayed from the nozzle 16, whereby the dropped fish body F changes from the state shown in FIG. 31 to the state shown in FIG. 32. The fish is transported at high speed on the fish transport surface 5 while sliding sideways in the state shown in FIG. When the fish body F passes through the notch 6, the back part 15 fits into the notch 6 as shown in FIG. It is converted into a downward position and falls into the receiving trough 3. Fish body F dropped into the above-mentioned supply trough 2
was in a posture with its head at the top, but even if it is dropped with its tail at the top, when it falls from the notch 6, it always changes to a posture with its back 15 down and its abdomen 14 up. .

FIG. 4 is a diagram for explaining the basic operation of changing the posture of the fish body F. As shown in FIG. 4, the fish F dropped onto the fish transport surface 5 has its center of gravity G located at the back 15 with respect to the center line L of the supply trough 2.
Even if it is dropped with the object moving away from the object,
Due to its own weight W, the center of gravity G slides sideways in the direction toward the center line L (in the direction of arrow A). When the center of gravity G moves near the center line L due to such side slip, as shown in FIG. 4, the abdomen 14 of the fish F moves away from the center line L, and the abdomen 15 approaches the center line L. As the fish F is transported downstream, it faces the notch 6 with its center of gravity G substantially overlapping the center line L, as shown in FIG. 4. At this time, the fish F is in a state in which the back part 15 faces the notch 6 and the abdomen 14 is supported on the one-side transport surface 5a of the fish transport surface 5, as shown in FIGS. 4 and 4a. Become. When the fish F is transported in this state, the back part 15 fits into the notch 6 first, and the abdomen 14 is placed on one side of the transport surface 5a while adjusting the degree of expansion of the notch 6. The head side of the back part 15 passes through the notch 6 and is in a posture facing the receiving trough 3. In this position, the fish F falls near the opening of the notch 6 and is supplied into the receiving trough 3 with the abdomen 14 up and the back 15 down.

The fish F thus supplied onto the receiving surface 8 of the receiving trough 3 is conveyed to the sideways falling means 4. The fish F fed in the sideways direction 4 is placed on the back 1
In a posture with 5 facing down, the abdomen pressing piece 10 abuts one side of the dorsoventral surface of the abdomen 14, and the back pressing piece 11 abuts and presses the other side of the dorsoventral surface of the back part 15. As a result, the front side (left side in Figure 1) in the transport direction
The abdomen 14 is turned over and the posture is changed to a state where the back 15 faces the side 9b of the guide plate 9. Further, the dorsoventral surface pressed by the abdominal pressing piece 10 is the guide plate 9
When the fish body F is carried on the bottom 9a of the
is transported with the back portion 15 in sliding contact with the side portions 9b. The fish F that passed through the sideways falling means 4 in this way is
The front side is the abdomen 14 and the back side is the back part 15, and the posture is changed in a fixed direction.

The fish F dropped into the above-mentioned supply trough 2 is
Although it was in a head-first posture, even if it was dropped in a tail-first posture, when it fell from the notch 6 according to the above-mentioned principle, it would always have its back 15 facing down and its abdomen 14 facing up. Posture is changed to posture.

FIG. 5 is a diagram for explaining the basic operation of changing the posture of another fish F1. With reference also to FIG.
A so-called symmetrical fish body F1, such as a sardine, in which the width b of the back portion 15 and the width b of the back portion 15 are approximately equal will be described. The behavior of changing the posture of the fish F1 is similar to that in the above embodiment, but since the fish F1 has a symmetrical shape, the dorsal portion 15 is lower than the abdominal portion 14 just before the notch 6, as shown in FIG. If the fish body F is transported onto the supply trough 2 under the same conditions as the fish F, which is difficult to take a downward position and therefore has an asymmetrical shape, when it falls from the notch 6, it will be placed with its back 15 down and its abdomen 14 up. There may be cases where the posture is not converted to the original posture. Therefore, in order to obtain the state shown in FIG. 4, the angle S of the supply trough 2 is made smaller than in the previous embodiment, and the inclination angle of the supply trough 2 in the conveyance direction is made large. Furthermore, the amount of water ejected from the nozzle 16 is increased. This makes it possible to reduce the frictional resistance between the fish body conveyance surface 5 and the fish body F1, and the fish body F1 easily slides sideways while being conveyed on the fish body conveyance surface 5, resulting in the state shown in FIG. 4C. be able to.
Therefore, the fish body F1 begins to fall into the notch 6 from the back 15 and is transformed into a desired posture. In addition,
According to the experimental results of the inventor of the present invention, when the angle S of the fish body F1 was set to 110° to 140° using a sardine, the angle of 100°
% can be converted to the desired sipping posture.

In the above-described embodiment, water is sprayed from a nozzle, but it may also be conveyed by a conveyor.

Effects As described above, according to the present invention, it is possible to reliably align a large number of fish that have been introduced in a horizontal position with a simple configuration and with their backs facing down and their abdomens facing up. .

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a simplified plan view of a fish F, FIG. 3 is a cross-sectional view perpendicular to the axis of the fish F on the fish transport surface 5, and FIG. FIG. 5 is a diagram for explaining the basic motion in which the posture of fish F is changed, and FIG. 5 is a diagram for explaining the basic motion in which the posture of another fish body F1 is changed. 1...Fish body dorsal and ventral alignment device, 2...Supply trough,
3... Receiving trough, 4... Means for turning the fish body sideways, 5
...Fish transport surface, 6...Notch, 7a, 7b...
Guide surface, 8...Reception surface, 14...Abdomen, 15...
Back, 16... nozzle, F, F1... fish body.

Claims (1)

[Claims] 1. The fish transport surface of the supply trough that supplies fish in a horizontally tilted position is inclined downward as it goes downstream in the transport direction of the fish, and has a roughly V-shaped cross section perpendicular to the axis; A notch is formed at the downstream end of the supply trough in the conveyance direction, which is symmetrical with respect to the axis of the supply trough, opens toward the downstream side, and widens toward the downstream side, and the peripheral edge of this notch extends inward. A receiving trough is provided below the notch to receive the fish body, and when the fish passes through the notch and falls from the notch to the receiving trough, it rotates in the direction of the girth and lowers the back. A dorsal-ventral alignment device for a fish body, which is characterized by converting the fish body into a belly-up position.