JPH0259695B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is directed to cutting and removing the dorsal fin and pelvic fin of a frozen fish body at an optimal depth in order to vertically divide the frozen fish body into two parts in a frozen state. The present invention relates to a method and an apparatus for doing so.

(Prior Art) In recent years, catches such as bonito and tuna are frozen on fishing boats immediately after being caught, and sent to the distribution process as frozen fish bodies. The products are then processed for consumers at retail stores, the final stage of the distribution process. The process involves thawing the frozen fish, cutting off unnecessary parts such as the dorsal fin and pelvic fin, and then dividing the fish lengthwise into two. By the way, when selling fish at supermarkets, etc., there are few experienced people who can properly process fish bodies, and it is inappropriate to supply unprocessed frozen fish bodies to supermarkets etc. For this reason, the frozen fish body is once thawed, processed and divided vertically into two, and then frozen again and supplied to supermarkets and the like. However, the frozen fish body is closest to its natural state when it is first thawed, and refreezing it has the disadvantage that its freshness, color, taste, etc. deteriorate significantly.

Therefore, a method and apparatus for processing frozen fish bodies while they remain frozen has been proposed, for example, in JP-A-51-74898. This method and device are excellent in that they can be processed in a frozen state, but the longitudinal dimension of the frozen fish that can be processed is limited, and the frozen fish to be processed must be sorted in advance according to the longitudinal dimension of the fish. I needed to do it.

Therefore, we measured the longitudinal dimension of the frozen fish body.
A device for controlling the movement of a tool for processing fish according to this measured value has been proposed in Japanese Patent Laid-Open No. 75050/1983. This device is advantageous in that it is not necessary to sort fish bodies in advance according to their longitudinal dimensions, unlike the device disclosed in Japanese Patent Application Laid-open No. 74898/1983.

(Problem to be solved by the invention) However, the device of JP-A-56-75050
Control data for adjusting tool movement according to the measured values is stored in a rewritable storage device, and the movement of the tool is controlled appropriately according to this control data as the frozen fish is transported, and the frozen fish whose dimensions have been measured are processed. It is not possible to measure the dimensions of the next frozen fish body before the process is completed. In other words, measuring the dimensions of the next frozen fish before completing the processing of the previously measured frozen fish will rewrite the control data stored in the accumulator, which will result in the control of the frozen fish being processed appropriately. Data will be lost. For this reason, dimension measurement and processing using tools cannot be performed in parallel, and multiple frozen fish bodies cannot be present between the position where dimensions are measured and the final tool that processes the fish bodies. Further improvements in work efficiency were desired.

The present invention has been made to further improve the above-mentioned conventional method and apparatus for processing frozen fish bodies. To provide a method and device for cutting the dorsal and pelvic fins of a frozen fish body, which can easily cut the pelvic fins with a high yield and have good work efficiency.

(Means for Solving the Problems) In order to achieve the above object, the method of cutting the dorsal fin and pelvic fin of a frozen fish body according to the present invention involves positioning the head of a frozen fish body whose tail has been cut in advance and cutting the tail. A contact plate is brought into contact with the cut end, and the longitudinal dimensions of each of the plurality of frozen fish bodies are sequentially measured from the amount of movement of the contact plate, and data for adjusting the movement of the cutting device corresponding to these measured values is stored in a storage device. , and sequentially store them in a shift register, and each time the frozen fish body is transported to a predetermined position in the longitudinal direction, each of the cutting device movement adjustment data corresponding to the transported frozen fish body is sequentially stored in the shift register. While transporting the frozen fish body in the longitudinal direction, the cutting devices disposed vertically with respect to the frozen fish body are vertically adjusted in accordance with the corresponding data for adjusting the movement of the cutting device. The purpose of this method is to cut and remove the dorsal fin and pelvic fin of frozen fish at an optimal depth.

In addition, the device for cutting the dorsal fin and pelvic fin of a frozen fish body of the present invention positions the head of the frozen fish whose tail has been cut in advance and abuts a contact plate against the cut end of the tail, and the amount of movement of this contact plate is a measuring device for sequentially measuring longitudinal dimensions of each of the plurality of frozen fish bodies; a storage device from which cutting device movement adjustment data corresponding to these measured values is sequentially read; a shift register that sequentially stores the cutting device movement adjustment data read out in the order of the fish; a transport device that transports the frozen fish in the longitudinal direction; and a transport device that transports the frozen fish to a predetermined position. A detector detects this, and the data for adjusting the movement of the cutting device corresponding to the transported frozen fish body is read from the shift register each time the detector detects this. The present invention comprises a pair of cutting devices that are vertically adjusted to cut and remove the dorsal fin and pelvic fin of each of the frozen fish bodies at an optimal depth.

(Function) First, the head is positioned and a contact plate is brought into contact with the tail cut portion, and the longitudinal dimension of the frozen fish body is measured from the amount of movement of this contact plate, so the measurement accuracy is high. Then, data for adjusting the movement of the cutting device corresponding to the measured values in the longitudinal direction of each frozen fish body are sequentially stored in a shift register, and the movement of the cutting device is adjusted according to the transportation of the frozen fish body to a predetermined position. Adjustment data is sequentially read out in the stored order and the cutting device is moved up and down to adjust, making it possible to measure the dimensions of the next frozen fish before the measured frozen fish is processed by the cutting device. It is.

In addition, the detector detects that the frozen fish body has been transported to a predetermined position, and at each detection, data for adjusting the movement of the cutting device corresponding to the transported frozen fish body is read from the shift register, and the cutting device is moved up and down. Since the adjustment is made, it is possible to properly cut the frozen fish bodies in the order of dimension measurement, regardless of the time required for transporting the frozen fish bodies or the distance between the measuring device that measures the dimensions and the cutting device that processes the fish bodies.

(Example) Hereinafter, an example of the present invention will be described based on the attached drawings. FIG. 1 is an overall schematic diagram showing an embodiment of the cutting device for dorsal and pelvic fins of a frozen fish body according to the present invention.

In FIG. 1, a frozen fish body 1 whose tail has been cut at a predetermined position based on biological laws is positioned on a fixing device 3 provided on a horizontal conveyance device 2 with the tip of the head as a reference. Let them grasp it. This lateral transport device 2 transports the frozen fish body 1 in a lateral direction perpendicular to the longitudinal direction of the fish body. Then, when the detection device 4 detects that the frozen fish bodies 1 have been transported, the dimension measuring device 5 is activated to individually measure the frozen fish bodies 1.
The longitudinal dimension of is measured. Frozen fish body 1 is
It is further transported laterally and inserted into the head cutting device 6. In this head cutting device 6, the head is placed in a position suitable for the longitudinal dimension of the frozen fish body 1 according to head cutting device movement adjustment data read out from a storage device to be described later based on the measurement value of the dimension measuring device 5. The frozen fish body 1 is transported by moving the blade of the cutting device 6.
Cut off the head and remove it. The frozen fish body 1 from which the head has been cut and removed falls from the horizontal conveyance device 2, but is caught above by the receiving device 7, and is arranged so as to go directly below the horizontal conveyance device 2. It is lowered to the transport position of the vertical transport device 8. This vertical transport device 8 transports the frozen fish body 1 in the longitudinal direction of the fish body, and is configured to transport the frozen fish body 1 while being sandwiched between roll rows 9 from both sides. The frozen fish body 1 in the receiving device 7 is transferred to the insertion device 1 in synchronization with the roll row 9 at the same speed as the conveyance speed of the vertical conveyance device 8.
0, it is inserted into the vertical conveyance device 8. Then, while being transported, the upper and lower dorsal fins and pelvic fins of the frozen fish body 1 are vertically adjusted in accordance with the data for adjusting the movement of the dorsal and pelvic fin cutting device, which is read from the storage device based on the measurement values of the dimension measuring device 5. The frozen fish body 1 is cut and removed by the dorsal and pelvic fin cutting device 11 at an optimal depth corresponding to its size. The frozen fish body 1 from which the head, dorsal fins, and pelvic fins have been cut and removed is
The paper is pressed and inserted into the cutting blade 12 by the vertical conveyance device 8, and is vertically divided into two parts. This cutting blade 12 is arranged on the conveyance line of the vertical conveyance device 8 with the vertical direction of the frozen fish body 1 as its longitudinal direction.

Next, details of each device will be explained.

As shown in FIG. 2, the horizontal conveyance device 2 is a slat conveyor provided with a fixing device 3. This fixing device 3 is configured to open at the upstream portion of the horizontal conveyance device 2, close at the intermediate portion, and open again at the downstream end, and grips the frozen fish body 1 with the tip of the head of the frozen fish body 1 as a position reference. When the detection device 4 detects the frozen fish body 1 transported by the horizontal conveyance device 2, the air cylinder 51 of the dimension measuring device 5 extends and brings the contact plate 52 into contact with the cut end of the tail section of the frozen fish body 1. let A measuring plate 53 is provided on the contact plate 52 to protrude in the direction of expansion and contraction of the air cylinder 51, and the amount of movement is measured by a plurality of pairs of phototransistors 54 and photodiodes 55 arranged with the measuring plate 53 in between. The longitudinal dimension of the frozen fish body 1 is measured. Depending on this measured value, the amount of movement adjustment of the blades of the head cutting device 6 and the dorsal and pelvic fin cutting devices 11 is determined, as will be described later.

In the head cutting device 6 , a rotary blade 62 is spline-fitted to a rotary shaft 61 in the longitudinal direction of the frozen fish body 1 so as to be movable in the axial direction, and the rotary shaft 61 is rotationally driven by a motor 63 . The rotary blade 62 is adjusted to move in the axial direction by a servo motor 64 using data for adjusting the movement of the head cutting device corresponding to the measurement value of the dimension measuring device 5, and the head of the frozen fish body 1 being transported is adjusted at an appropriate position. Cut and remove. 65 is a detector that detects when the frozen fish body 1 is transported.

Furthermore, as shown in FIG. 3, the frozen fish body 1 with its head cut off and removed is transported to the end of the horizontal transport device 2 and rotated approximately 90 degrees as the fixing device 3 is rotated and opened. When dropped, the receiving device 7
As the air cylinder 71 expands, the frozen fish body 1 is received by the receiving part 72 in the raised position, and as the air cylinder 71 contracts, the frozen fish body 1 is lowered to the conveyance line of the vertical conveyance device 8 without disturbing its posture. 73 is a guide for stabilizing the posture of the frozen fish body 1.

Further, as shown in FIG. 4, the frozen fish body 1 is inserted into the vertical transport device 8 in the longitudinal direction by the expansion of the air cylinder 101 of the insertion device 10. The air cylinder 101 is extended at the same speed as the vertical conveyance device 8 and in synchronization with the roll row 9.

By the way, the roll row 9 is composed of a plurality of rolls 91 arranged in parallel in the longitudinal direction of the frozen fish body 1. As shown in FIGS. 5 and 6, each roll 91 is connected to the frozen fish body by a compression spring 92.
The frozen fish body 1 is elastically biased towards the frozen fish body 1 and is held between both sides and transferred by the chain 93. Further, the roll 91 is shaped like a drum, consisting of a curve 94 with a large curvature and a curve 95 with a smaller curvature, and this curvature is the curve of the cross section of the two frozen fish bodies 1 to be processed, one large and one small. The structure is such that various types of frozen fish bodies 1 of different sizes can be reliably held.

Furthermore, as shown in FIG. 7, the dorsal fin cutting device 111 and the pelvic fin cutting device 112 are placed above and below the frozen fish body 1 being transported, respectively.
are arranged, and both cutting devices are equipped with motors 113 and 11.
Two rotary blades 115 and 116 arranged in a V-shape and driven by a rotary blade 4 are provided. The dorsal fin cutting device 111 and the dorsal fin cutting device 112 include
Servo motors 117 and 118 are provided, respectively, so that the rotary blades 115 and 116 can be moved and adjusted in the vertical direction. This movement adjustment amount is determined by adjusting the movement of the dorsal and pelvic fin cutting device according to the measurement values of the dimension measuring device 5, and as shown in FIG.
Cut and remove the pelvic fins to the optimal depth, and cut the pelvic fins to the caudal part to approx.
Adjustment is made in relation to the transport speed of the frozen fish body 1 so that the cutting is performed at a depth of 1.0 cm and at a depth of about 4.5 cm at the abdomen. Note that the dorsal and pelvic fin cutting device 11 is provided with a detector 119 that detects when the frozen fish body 1 is being transported. This detector 119
Each time it is detected that the frozen fish body 1 has been transported, data for adjusting the movement of the dorsal and pelvic fin cutting devices is read out in sequence according to the measurement values measured by the dimension measuring device 5, and the dorsal and pelvic fin cutting devices 111 and The movement of the pelvic fin cutting device 112 is adjusted.

Then, the frozen fish body 1 from which the dorsal fin portion and the pelvic fin portion have been cut and removed is further conveyed to the vertical conveyance device 8 and is pressed by the cutting blade 12 to be vertically divided into two pieces. The bone remains attached to one meat side of this vertically divided frozen fish body 1, but it can be removed by an appropriate method.

Here, a head cutting device 6 and a dorsal and pelvic fin cutting device 1 are used.
A control circuit for controlling the movement adjustment of 1 will be explained.
FIG. 10 is a block circuit diagram of the control circuit.
Head cutting device movement adjustment data for cutting the head read out from the storage device 13 in accordance with the measurement value measured by the phototransistor 54 of the dimension measuring device 5 is input to the first shift register 14. , data for adjusting the movement of the dorsal and ventral fin cutting devices for cutting the dorsal and ventral fins are input to the second and third shift registers 15 and 16, respectively.
These first, second and third shift registers 1
4, 15, and 16, a plurality of pieces of data are sequentially inputted in the order in which they were measured by the dimension measuring device 5. Therefore, each time the frozen fish body 1 is detected by the detector 65 of the head cutting device 6, data for adjusting the movement of the head cutting device is sequentially read out from the first shift register 14, and the data for adjusting the movement of the head cutting device is sequentially read out from the first shift register 14. 1
7 to control the movement adjustment of the servo motor 64. In addition, the detector 1 of the dorsal and pelvic fin cutting device 11
Every time a frozen fish body is detected in 19, the second and third
Data for adjusting the movement of the dorsal and pelvic fin cutting devices is sequentially read out from the shift registers 15 and 16, and is applied to the second and third servo motor drive circuits 18 and 19, respectively, to control the movement adjustment of the servo motors 117 and 118. Ru.

Incidentally, frozen fish bodies 1 of different sizes are loaded one after another on the horizontal conveyance device 2, and their dimensions are sequentially measured by the dimension measuring device 5.
In the dorsal and pelvic fin cutting device 11, the detectors 65 and 119
detects that the frozen fish body 1 has been transported,
Data for adjusting the movement of the head cutting device and data for adjusting the movement of the dorsal and pelvic fin cutting devices are sequentially read out in the order measured by the dimension measuring device 1. That is, 1
When the first frozen fish body 1 is transferred to the head cutting device 6 and the dorsal and pelvic fin cutting device 11, data for adjusting the movement of the cutting device corresponding to the measurement value obtained for the second frozen fish body 1 is read out, Similarly, the cutting device movement adjustment data corresponding to the measurement value obtained for the nth frozen fish body 1 is read out when the nth frozen fish body 1 is conveyed to the head cutting device 6 and the dorsal and pelvic fin cutting device 11. It will be done. This makes it possible to measure and cut the dimensions of multiple frozen fish bodies 1 with different dimensions in parallel, which eliminates the need to measure the dimensions of the next frozen fish body after the cutting process is completed. In comparison, a plurality of frozen fish bodies can be efficiently processed continuously, rapidly and reliably. Moreover, the head, dorsal fin, and pelvic fin can be cut and removed at the optimal position and depth according to the dimensions of the frozen fish body 1, improving yield.

Note that the conveying devices such as the vertical conveying device 8 in the horizontal conveying device 2 are not limited to those in the above-mentioned embodiments, and may be configured with an automatically controlled robot mechanism such as a manipulator. Further, the dorsal fin portion and the pelvic fin portion of the frozen fish body 1 are not limited to being cut and removed simultaneously by the two rotary blades 115 and 116 arranged in a V-shape as in the above embodiment. Then, the dorsal fin portion and the pelvic fin portion of the frozen fish body 1 may be sequentially cut and removed in the transport direction.

(Effects of the Invention) As explained above, according to the present invention, the longitudinal dimension of a frozen fish body whose tail has been cut in advance is determined by positioning the head and abutting a contact plate against the cut end of the tail. Since it is measured by the amount of movement of the plate, it can be accurately and reliably measured. Then, the cutting device movement adjustment data corresponding to this measured value is read out from the storage device and stored in the shift register in sequence, and when the frozen fish body is transported to a predetermined position, it is stored in the shift register corresponding to the fish body. Data for adjusting the movement of the cutting device is read out in order, and the cutting device is adjusted to move up and down according to the data for adjusting the movement of the cutting device to cut and remove the dorsal fin and the pelvic fin, so the frozen fish bodies are sorted in advance according to their dimensions. Frozen fish bodies of different sizes can be reliably processed without any effort. Furthermore, dimension measurement and cutting processing can be performed on multiple frozen fish bodies in parallel, and multiple frozen fish bodies may be present during transportation between the measuring device and the cutting device, and the cutting process can be carried out in parallel. Compared to the conventional apparatus, which requires measuring the dimensions of the next frozen fish body after the completion of the process, this method has excellent effects such as being able to process a large amount of frozen fish bodies continuously and efficiently.

[Brief explanation of drawings]

FIG. 1 is an overall schematic diagram of an embodiment of an apparatus for implementing the present invention, FIG. 2 is a schematic diagram of a horizontal conveyance device, a dimension measuring device, and a head cutting device, and FIG. FIG. 4 is a schematic diagram of the receiving device, FIG. 4 is a schematic diagram of the insertion device and the roll row, FIG. 5 is a plan view of the roll row, and FIG. 6 is a diagram showing the shape of the rolls. , FIG. 7 is a schematic diagram of the dorsal and pelvic fin cutting device, FIG. 8 is a diagram showing the depth at which the frozen fish body is cut with the dorsal and pelvic fin cutting device, and FIG. 9 is a diagram showing the depth at which the frozen fish body is cut vertically. This is a diagram illustrating the division into two parts.
FIG. 10 is a block circuit diagram of the control circuit of the apparatus of the present invention. 1: Frozen fish body, 2: Horizontal transport device, 3: Fixing device, 4: Detection device, 5: Dimension measuring device, 8: Vertical transport device, 11: Back and pelvic fin cutting device, 12: Cutting blade, 13: Memory device, 15: second shift register, 16: third shift register, 18: second servo motor drive circuit, 19: third servo motor drive circuit, 51: air cylinder, 52: contact plate,
53: Measuring plate, 54: Phototransistor, 5
5: Photodiode, 113, 114: Motor, 115, 116: Rotating blade, 117, 118:
Servo motor, 119: Detector.

Claims (1)

[Scope of Claims] 1. Positioning the head of a frozen fish whose tail has been cut off in advance, abutting a contact plate against the cut end of the tail, and determining the longitudinal direction of each of the plurality of frozen fish from the amount of movement of this contact plate. The dimensions of the frozen fish body are sequentially measured, data for adjusting the movement of the cutting device corresponding to these measured values is read out from the storage device and sequentially stored in the shift register, and each time the frozen fish body is transported to a predetermined position in the longitudinal direction. The data for adjusting the movement of the cutting device corresponding to each frozen fish body that has been received is sequentially read from the shift register, and the cutting device is arranged vertically with respect to the frozen fish body while conveying the frozen fish body in the longitudinal direction. The dorsal fin portion of the frozen fish body is characterized in that the dorsal fin portion and the pelvic fin portion of each frozen fish body are cut and removed at an optimum depth by adjusting the vertical movement of the cutting device according to the corresponding data for adjusting the movement of the cutting device. and how to cut the pelvic fin. 2. Positioning the head of the frozen fish whose tail has been cut in advance, abutting a plate against the cut end of the tail, and sequentially measuring the longitudinal dimensions of each of the plurality of frozen fish from the amount of movement of this plate. a measuring device, a storage device from which cutting device movement adjustment data corresponding to these measured values are sequentially read out, and a storage device that sequentially reads out the cutting device movement adjustment data that have been read out in the order of the frozen fish bodies whose dimensions have been measured. a shift register for storing; a transport device for transporting the frozen fish body in the longitudinal direction; a detector for detecting that the frozen fish body has been transported to a predetermined position by the transport device; Data for adjusting the movement of the cutting device corresponding to the frozen fish body that has been received is read from the shift register, and the vertical movement is adjusted according to the data for adjusting the movement of the cutting device to cut the dorsal fin and pelvic fin of each frozen fish body. A device for cutting the dorsal fin and ventral fin of a frozen fish body, comprising: a pair of cutting devices for cutting and removing fish at an optimum depth;