JPS608093B2 - Fish posture alignment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for aligning the ventro-dorsal direction of a fish body as a pretreatment step for various processing such as cutting, dissection, skinning, and packaging of fish bodies.

Conventionally, such a process was performed manually, but the present invention aims to provide an apparatus that can perform this process automatically and continuously at high speed.

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

FIG. 1 shows an external perspective view of an embodiment of the present invention.

The first chute 1 has a vertical cross-sectional shape that allows the fish to pass through with its belly or back facing up, and is installed at an angle of about 30 degrees, and an optical detection device 3 is disposed on its upper side 2. A cage 4 is provided at the lower end that serves as the exit, and fish body biasing rollers 5 are provided on both left and right sides. The optical detection device 3 is equipped with a light emitter such as an LED and a light receiver such as a photodiode, and the light emitter and receiver are arranged so as to receive the light irradiated by the light emitter and reflected by the fish body skin, and the received electric signal is transmitted through an intensifier, It is processed by an arithmetic intensifier, and is configured to output a detection signal by determining whether it is the abdomen with white skin or the back with blue skin. This detection is carried out when the fish body is in contact with the gate 4, and when a detection signal is output, the fish moves in response to open the gate 4, and the rollers 5 are driven to send the fish forward at high speed. The second chute 6 is connected to the lower end of the first chute 1 and installed with the same slope as the first chute, and the cross-sectional shape at least at the lower part is horizontally medium enough to allow a fish to pass sideways. A fish volume changing direction switching device 7 is disposed at the connection portion with the first chute, that is, at the upper end portion.

This switching device 7 responds to the detection signal of the detection device 3 by changing the falling fish body to a predetermined direction and turning it sideways to keep the ventral dorsal direction constant. This can be done, but if you apply a very small amount of force to a fish falling at high speed to slightly upset its left and right balance, it will definitely roll over due to gravity, so it is preferable to have a structure with simple moving parts. . The illustrated one has a structure in which a contact plate 9 with a horizontal axis 8 as a fulcrum tilts in both left and right directions. Other examples include, for example, a method in which the vertical axis is used as a fulcrum for rotational displacement in both left and right directions, a method in which the gate 4 operates in conjunction with the opening and closing of the gate 4, a method in which a part of the lower side is tilted, and a method in which the second chute itself is tilted. Furthermore, there is a method in which the neutral state is shifted to the first state or the second state, and a method in which one state is always in one state, for example, the first state, and is switched to the other state, for example, the second state, if necessary. There is. The standby chute 10' is a chute connected to the lower end of the second chute 6, and has a slope that is approximately half that of the first and second chutes, and has a gate 11 at the exit and a fish body biasing point on the upper and lower sides. A roller 12 for use is provided. The fish body conveyor 13 is
A bucket 13 that engages with the lower end of the standby chute 10 and accommodates fish one by one moves in the direction of the arrow. The gate 11 is opened in response to a signal to detect the arrival of an empty bucket, and at the same time the roll 12 is displaced inward to send the fish into the bucket 13. In the above-mentioned apparatus, when the fish sent head first is introduced into the entrance of the first chute, the ventral dorsal direction is aligned in the longitudinal direction.

Then, it is determined whether the belly is up or the back is up, and the rollover direction switching device 7 is set based on the output signal, so that the orientation of the fish body after rollover is, for example, belly to the left and back to the right when facing the direction of travel. It can be arranged as follows. To facilitate the movement of the fish body,
Water can be flowed from above the chute and fish bodies can be processed under running water. According to the present invention, the ventral or dorsal direction of the fish body is first aligned vertically, and then the direction of the ventral or dorsal direction is determined, and then the desired manipulation is given to the fish body to cause it to roll over, so the energy of gravity can be utilized. This has the effect of being able to align the posture of the fish body quickly and reliably with an extremely simple device.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a practical example of the present invention. FIG. 2 is a longitudinal sectional view thereof. In the figure, 1 is the first chute, 3 is the optical detection device, 6 is the second chute, and 7 is the first chute.
is a fish body turning direction switching device. Figure 2 Figure 1

Claims (1)

[Claims] 1. A first chute having a longitudinally elongated cross-sectional shape through which a fish body can pass with its belly or back facing upward; a projector and a light receiver disposed on the upper side or lower side of the first chute;
a second chute connected to the lower end of the chute and having a cross-sectional shape that allows the fish body to pass through with its back sideways; The device is equipped with a fish body turning direction switching device that can selectively take two states based on the light reception signal of the light receiver. A posture alignment device for fish bodies configured to align the fish bodies in the same direction.