JPS6232896B2 - - Google Patents

Description

[Detailed description of the invention] Technical field The present invention relates to a fish ovary removal device.

BACKGROUND TECHNOLOGY Conventional equipment for removing ovaries from herring, cod, etc.
The method used was to align the tips of the fish heads and then use a knife placed at a predetermined position to open the abdomen of the fish and remove the ovaries. However, due to variations in the size and posture of the fish and the size of the ovaries, the ovaries could be damaged. The drawback was that the ovary could not be removed and it would swell.

Purpose The purpose of the present invention is to provide a device that allows for extremely smooth removal of the ovary without damaging it.

Means for Solving the Problems The ovary retrieval device of the present invention comprises a hanging transport device that holds the head of a fish body and runs the fish in a hanging position with the tail hanging downward, and a hanging conveyance device that holds the head of a fish body and runs the fish in a hanging position, and the head of the fish that is traveling in this hanging position. a cutter that cuts off the head; a chain conveyance device that runs in the same direction at approximately the same speed as the hanging conveyance device while holding the tail of the fish in the hanging posture before cutting the head; It has an egg retrieval device that is installed on the return path after the direction is changed by a sprocket and extracts the ovary from the fish body by pressing the abdomen of the fish. It is characterized by being configured so that the ovary can be removed.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 shows a front view of the entire embodiment of the present invention.

The conveyor 1 is equipped with a bucket 2...2 on which the fish body F1 is placed laterally, and this bucket 2 has a body part 2.
It is divided into a head part 2b and a head part 2b, and a gap is provided between them to accommodate a clamping belt, which will be described later. The axis of the starting end sprocket 3 of this conveyor 1 is horizontal, but the axis of the ending end sprocket 4 is inclined at about 30 degrees. Therefore, the bucket cart 2 on the conveyor gradually changes its inclination angle from the horizontal position on its outward journey. Drive while increasing. A pair of upper and lower clamping belts 5 and 6 have starting end side sprockets 7 and 8 at the terminal end of the conveyor 1, and clamp the gill cover portions of fish on the conveyor 1. The axes of the start end sprockets 7 and 8 are provided approximately parallel to the end end sprocket 4 of the conveyor 1, but the axes of the end end sprockets 9 and 10 are provided in the vertical direction, and the belts 5 and 6 extend from the start end to the intermediate portion. In the first half, the opposing direction is twisted, and in the second half, the opposing direction is horizontal. A rotary cutter 11 for cutting and removing the fish head is disposed in the rear half thereof so as to cut directly below the clamping belt.

Immediately below the rear half portions of the clamping belts 5 and 6, a clamping chain 12 is provided for grasping and transporting the tail of the cut fish F2. As shown in FIG. 2, this clamping chain 12 consists of a pair of left and right chains 12a, 12b, and has clamping tools 50a, 50b on opposing surfaces, left and right horizontal rails 24a, 24b, a vertical rail 25a, 25b defines its trajectory. The trajectory is such that an outgoing path is formed below the latter half of the clamping belts 5, 6 at a substantially constant distance, and as shown in a plan view of the outgoing path in FIG.
are arranged slightly apart from each other, and the facing distance gradually narrows until reaching the clamping point A, and after that, the direction is changed by the terminal side sprockets 14a and 14b while maintaining a distance suitable for clamping the tail part, This interval is maintained until point B on the return trip, and after that the interval widens and hangs on the sprocket 13. Therefore, the clamping chain is A
The fishtail is pinched and conveyed from point to point B. The clamping chain 12 is driven to run at a speed that is the same as or slightly faster than the running speed of the clamping belts 5 and 6.

After the clamping chain 12 changes direction from the forward route to the return route, an egg collecting device 15 is provided. The front view of this egg collection device is shown in Figure 4, and the cross-sectional view is shown in Figure 5.
As shown in the figure. Back guides 16a and 16b are provided along the chain running track, a horizontal bar 17 that holds down the abdomen of the fish, and a support 26 that elastically supports it.
a, 26b, a guide 2 that defines the displacement of the horizontal bar 17;
7a, 27b, and a saucer 18 for receiving collected ovaries.

A chute 19 is disposed below the release point B at the end of the return path of the clamping chain 12 for receiving the fish body F3 after egg collection and guiding it to the next three-piece grater. The three-sheet grater is a conventionally known device, and includes a pair of left and right holding belts 20 (a, b).
A knife 21 for abdominal opening, a knife 22 for removing viscera, and a knife 23 for cutting three pieces are sequentially provided along the travel trajectory. The three-piece cutting knife 23 cuts and separates the fillet portion F4 and the back bone portion F5.

Next, the action will be explained. First, the fish F1 to be processed is placed on the bucket of the conveyor 1 with its belly facing forward and its back facing backwards, with its head aligned. This state is shown in FIG. At this time, the pectoral fin of the fish is inserted between the body part 2a and the head part 2b. The conveyor 1 gradually inclines, and the fish slides toward the tail. As a result, as shown in FIG. 7, the body stops sliding down with the pectoral fin hanging on the edge of the torso portion 2a.

In this state, the clamping belts 5 and 6 clamp and transport the fish's gill cover. By twisting the clamping belt, the fish is suspended vertically with its tail facing down.
At this time, the clamping chains 12a and 12b clamp the tail portions, resulting in the state shown in FIG. 9. In this state, the ovary is displaced toward the tail from its normal position because the gill cover is pressed by the clamping belt and gravity is acting on the ovary due to the hanging posture.

In this state, the fish F1 is cut by the cutter 11 directly below the clamping belt, that is, at the base of the pectoral fin. By this cutting, the ovary OV is released from the pressing force of the clamping belts 5 and 6, so that the ovary OV slightly protrudes from the cut surface as shown in FIG. Next, when passing through the sprocket 14, the ovary protrudes a little further due to centrifugal force.

The horizontal bar 17 of the egg collecting device 15 first comes into contact with the tail of the abdominal part of the fish, which is conveyed with the tail held between the chains, and then pushes the fish down toward the back as the chain runs. That is, as shown in FIG. 11, the horizontal bar 17 moves from the tail toward the cut surface while pushing the abdomen. As a result, the ovary OV is pushed out together with the body fluid and taken out onto the saucer 18. After the egg collection, the fish body F3 is released from the clamping chain and placed on a three-piece grater.

The present invention is not limited to the above-mentioned embodiments, and can be implemented by partially replacing the known techniques.

Effects As explained above, according to the present invention, the ovary can be easily removed without damaging the ovary, regardless of the variation in the size of the fish body.

[Brief explanation of the drawing]

FIG. 1 is a front view of the entire embodiment of the present invention, FIG. 2 is a cross-sectional view showing the clamping chain shown in FIG. 1, FIG. 3 is a plan view of the clamping chain, and FIG. A front view of the device 15, and FIG. 5 is a cross-sectional view of the egg collection device 15. FIG. 6 to FIG. 11 are operation explanatory diagrams showing the operation of the embodiment shown in FIG. 1 over time. DESCRIPTION OF SYMBOLS 1... Conveyor, 5, 6... Pinching belt (hanging conveyance device), 11... Cutter, 12... Clamping chain (chain conveying device), 13, 14... Sprocket of pinching chain, 15... Egg collecting device.

Claims (1)

[Claims] 1. A hanging transport device that holds the head of a fish and runs it in a hanging position with the tail hanging downward; a cutter that cuts off the head of the fish while it is running in the hanging position; and a cutter that cuts the head of the fish while it is running in the hanging position, and A chain transport device that runs in the same direction at substantially the same speed as the above-mentioned hanging transport device while holding the tail of a fish body; A fish ovary, characterized in that it has an egg collection device that extracts the ovary from the fish body by pressing the ovary, and is configured such that the ovary is removed after the fish head is cut while the fish ovary is displaced toward the tail. Retrieval device.