JPH02299537A - Roe-collecting device - Google Patents

Abstract

PURPOSE:To surely take out the ovary of a fish without relating to the size of the fish body and further without injuring the ovary by cutting the head of the fish body while applying an abdominal pressure by an abdominal pressure means. CONSTITUTION:The head Fd of a fish body F carried in a state wherein the abdomen of the fish body is directed on the downstream side of the carrying direction R is cut by a cutting means 34 to take out an ovary Fa in the abdominal cavity of the fish body F. Therein, the abdomen near the pectoral fin Fc of the fish body F is pressed with an abdominal pressing 31 disposed on the upstream side of the carrying means R in relation to the cutting means 34 to transfer the ovary Fa on the tail side in the abdominal cavity. Since the head portion Fd of the fish body F is cut while the abdominal pressure is applied by the abdominal pressing means 31, the ovary can be surely taken out without relating to the size of the fish body F and further without injuring the ovary.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to a method for collecting roes of Alaska pollock, for example, in which the head can be cut off and the roe can be continuously taken out without damaging them. Concerning improvements to equipment.

Prior Art A typical prior art egg collection device transports a fish body using a conveyor belt, and midway through the transport, the tip of the head of the fish body is positioned at a fixed position along the cephalad-caudal direction of the fish body. The head of the fish body is cut off, and the abdomen of the fish body, from which the head has been cut off, is pressed by a pressing member to remove the ovary.

Problems to be Solved by the Invention According to the above-mentioned prior art, the length of the head of a fish in the cranio-caudal direction changes depending on the size of the fish, and therefore the cutting position changes or the fish is cut diagonally, causing the ovary to be cut off. There were problems such as the ovaries being damaged and the removal of the ovaries being uncertain.

An object of the present invention is to provide an egg collection device that eliminates the above-mentioned problems and allows ovaries to be removed smoothly and reliably without damaging the ovaries, regardless of the size of the fish.

Means for Solving the Problems The present invention provides an egg collection device configured to remove the ovary in the abdominal cavity by cutting off the head of a fish body transported with the abdomen facing downstream in the transport direction using a cutting means. The egg collection device is characterized in that it includes an abdominal pressure means that is provided upstream in the transport direction with respect to the cutting means and presses the abdomen of the fish near the pectoral fins to displace the ovary caudally within the abdominal cavity.

Further, in the present invention, the abdominal pressure means is provided on the upstream side in the conveying direction immediately before the cutting means, and directs the abdomen near the base of the pectoral fin of the fish body toward the dorsal side of the fish body so as to push down the ovary caudally within the abdominal cavity. The egg collection device is characterized in that it includes an abutment member that is pressed by the user, is swingably supported toward the upstream side or downstream side of the conveyance path, and is elastically biased toward the upstream side in the conveyance direction.

According to the present invention, the fish body is transported with its abdomen toward the downstream side in the transport direction, and the abdomen near the pectoral fin of the fish body being transported is pressed by the abdominal pressure means toward the two-liquid side in the transport direction, Displace the ovary caudally within the abdominal cavity.

While the abdominal pressure means presses the abdomen, the cutting means cuts off the head of the fish near the base of the pectoral fin.

Since the ovary is displaced caudally at this time, the cutting means is prevented from damaging the ovary.

Further, according to the present invention, in the abdominal pressure means, the abdomen near the base of the pectoral fin of the fish body is pressed toward the dorsal side of the fish body by the contact member elastically biased on the upstream side in the transport direction of the fish body. . This allows the ovary in the abdominal cavity to be reliably displaced caudally, regardless of the midbones and gill bones of the fish body that define the abdominal cavity.

Embodiment FIG. 2 is an overall plan view of an egg collection device 1 according to an embodiment of the present invention, and FIG. 3 is a side view thereof. In these figures, the egg collecting device 1 carries the fish F in a lying position with the head facing forward with respect to the operator M and the abdominal side facing downstream in the transport direction, and the head of the fish F. A four-stage positioning conveyance means 2 for correctly regulating the position in the tail direction; a clamping conveyance means 3 connected to the positioning conveyance means 2 to receive the fish body F from the positioning conveyance means 2 and convey it to the downstream side; an abdominal pressure means 4 which is provided midway and presses the abdomen Fb of the fish body F to bring the ovary Fa in the abdominal cavity toward the caudal side;
a cutting means 5 that is provided midway through the conveyance means 3 and cuts the head Fd near the base of the pectoral fin Fc;
The apparatus includes an egg collection means 6 for extruding the ovary Fa from the fish body F from which the head Fd has been cut and removed. As the clamping and conveying means 3, a pair of upper and lower conveyor belts 18 are formed which clamp and convey the body of the fish F, but in order to prevent the fish F from escaping, the head Fd may be clamped from above and below as necessary. A pair of head conveying belts, which will be described later, are also provided.

The conveyor belt 18 has a pair of start end pulleys 20a, 2 which are rotationally driven in the direction of arrow A around a horizontal axis of rotation.
0b, and a pair of end-side pulleys 2 that rotate following this
1a, 21b, these pulleys 20a, 20b;
Endless belt bodies 22a and 22b made of a visible material such as rubber are wound around the belts 21a and 21b. On the opposing surfaces of each belt body 22a, 22t+,
A large number of locking hooks are installed so that the body area of the fish F is not pinched□
These are clamping surfaces 24a and 24b. Belt body 22
a and 22b are provided as a pair on the back side so that the clamping surfaces 24a and 24b are close to each other, and are applied to a plurality of rollers 25a and 25, respectively, which are biased toward each other by springs not shown. It is being elastically pressed by.

Below the head feed belt 19 is a fish head discharge chute 30.
A is installed at an angle, and a waste conveyor 30b is placed at the end thereof.

The abdominal pressure means 4 and the cutting means 5 are provided close to each other so that abdominal pressure and head cutting can be performed simultaneously. Abdominal pressure means 4
As shown in FIG. 1, is provided just before the cutting means 5 in the conveyance direction, and pushes down the ovary Fa in the fish body F toward the tail side so that the ovary Fa within the fish body F is not damaged when cutting the head. The abdominal pressure means 4 includes a contact member 31 consisting of a thin plate-like upper member 31a and a lower member 31b for pinching the abdomen Fb of the fish F near the base of the pectoral fin Fc from above and below the conveyor belt 18. Each free end is attached close to each other. The abutting members 31 have mutually adjacent ends facing the conveying path of the fish F, are swingable about their respective fixed ends Bl and B2 as fulcrums, and are supported by springs 32a and 32b in the opposite direction to the conveying direction R. The bullet is energized in the direction.

If a rotatable roller is provided at the tip of the contact member 31 that contacts the fish body F, smoother abdominal pressure operation can be expected.

As the cutting means 5, a pair of upper and lower cutters 33 each having a rotary round blade 34 is used.

The egg collecting means 6 is provided on the downstream side of the cutting means 5 in the transport direction R, has a rotational axis substantially perpendicular to the transport path of the fish F, and can be displaced to approach/displace near the anus of the abdomen Fb of the fish F. A pressing member 35 is provided. The pressing member 35 is rotationally driven in a direction opposite to the transport direction R of the fish F, and is biased by a spring 51 in a direction closer to the abdomen of the fish F. Below the position where the pressing member 35 presses the fish F, a piano wire 52 stretched in a direction intersecting the transport path is provided. This piano wire 52 is designed to hook and cut the ovary Fa pushed out from the fish body F if it is connected to the fish body F through the intestinal tract or the like, thereby preventing the ovary Fa from being pulled by the fish body F and being damaged. Make it.

The fish F, which are placed randomly on the feed conveyor 55 shown in FIG. placed on top. The placement of the fish F on the plate-like body 12 is performed so that the cutting position by the cutting means 5 is fixed to the ovary F regardless of the size of the fish F in the cranio-caudal direction.
a is correctly positioned in a position that will not damage it.

Next, the fish F is transferred onto the conveyor belt 18, and conveyed with its trunk held between the upper and lower belt bodies 22a and 22b. The traveling speed of this transport heald 18 is selected to be, for example, 8 m/min. Therefore, the transport interval of the fish F becomes twice as large as the transport interval on the input conveyor 11. This conveyance interval is selected within a range that is sufficient to prevent contact with the following fish F even if the fish F whose head Fd has been cut off is pushed upstream by the suppression member 35 and tilts. .

In addition, the fish body F has its head Fd held between the head feed conveyor 19, and according to each order of FIG. 4(1) to FIG. 4(4) and FIG. 5(1) to FIG. 5(4), The upper part of the abdomen Fb is pressed from the left and right sides of the fish body F from the ventral side to the dorsal side by the abutment member 31 of the abdominal pressure means 4, and the pectoral fin Fc is cut by the cutting means 5 while the ovary Fa is pushed down toward the tail side.
is cut near the base of the head Fd side. The cut head Fd is fed by one head feeding belt, conveyed from the fish head discharge chute 30a via the fish head discharge conveyor 30b, and then discarded.

The body of the fish F is conveyed while being held between the conveyor belts 18 and reaches the egg collecting means 6 downstream.

In the egg collecting means 6, the abdomen Fb of the fish F whose head Fd has been cut is kept in a horizontal state so that the end of the fish F on the cut side does not hang down, and the abdomen Fb abuts against the pressing member 35. At this time, the pressing member 35 is elastically biased in the direction of the arrow mark (see FIG. 2) by the spring force of the spring 51. In this state, the fish F is transported in the transport direction A by the transport belt ]8. When the ovary Fa is pushed out or the ovary Fa is partially pushed out, the receiving surface 4 temporarily
3, and the whole thing can be pulled out smoothly without being crushed.

This pulling action is also facilitated by the rotation of the pressing member 35, and the rotating suppressing member 35 cuts organs such as the intestinal tract that connect the ovary Fa and the fish body F. Moreover, even if the ovary Fa is connected to the intestinal tract, it will be caught on the piano wire 52 and divided, and the ovary Fa will be connected to the fish body F.
The eggs can be easily separated from the eggs and collected reliably and in a short time.

After the egg collection, the pressing member 35 is pushed by the fish F as the fish F advances against the spring force of the spring 51, swings away in the direction opposite to the D direction, and does not obstruct the passage of the fish F.

The removed ovary F a falls into the egg collection jug I~53/ and is stored, and the remaining fish F? At the terminal end of the J transport heald 18, the fish is discharged out of the machine through a fish discharge chute 54.

According to the egg collection device 1 of the present invention, the head F d is cut by applying abdominal pressure with the contact member 31 while the fish F is positioned in the cranio-caudal direction, so that the ovary Fa is not damaged. It can be taken out without fail.

In the above-mentioned embodiment, the fish F was transported with its head and tail in a horizontal position for egg collection. However, in another embodiment of the present invention, the head Fd of the fish F is placed upward and the tail is turned upward. Transport the fish downward, and place the ovary Fa in this posture.
Furthermore, the eggs may be collected by transporting them in an inclined position at an angle other than horizontally or vertically.

Effects of the Invention According to the present invention, since the head is cut while applying abdominal pressure by the abdominal pressure means, the ovary can be reliably collected without damaging the ovary, regardless of the size of the fish.

[Brief explanation of drawings]

FIG. 1 is a side view of an embodiment of the present invention, FIG. 2 is a plan view showing the overall configuration of the egg collection device 1 of the present invention, and FIG. 3 is a side view of the embodiment shown in FIG. FIG. 4 is a plan view showing the operating state of the abdominal pressure means, and FIG. 5 is a side view of the abdominal pressure means.

Claims (2)

[Claims] (1) In an egg collection device configured to remove the ovary in the abdominal cavity by cutting off the head of a fish body transported with the abdomen facing downstream in the transport direction using a cutting means, the upstream side in the transport direction with respect to the cutting means 1. An egg retrieval device, which is installed in a fish body and includes an abdominal pressure means for pressing the abdomen near the pectoral fins of a fish to displace the ovary caudally within the abdominal cavity. (2) The abdominal pressure means is provided on the upstream side in the transport direction just before the cutting means, and presses the abdomen near the base of the pectoral fin of the fish toward the dorsal side of the fish so as to push the ovary down caudally within the abdominal cavity. 2. The egg collection device according to claim 1, further comprising an abutment member that is swingably supported toward the upstream side or the downstream side of the conveyance path and resiliently biased toward the upstream side in the conveyance direction.