JPH0773835B2 - Frozen fish processing equipment - Google Patents

Description

FIELD OF THE INVENTION The present invention relates to a device for treating frozen fish.

2. Description of the Related Art FIG. 7 is an enlarged side view showing the vicinity of a cutting edge portion 2 of a conventional saw blade-shaped cutting member 1, and FIG. 8 is a saw blade-shaped cutting member 1 seen from below in FIG. FIG. In general, fish such as herring that are caught in the open sea are landed in the frozen state, and when they are processed into a fillet-like shape, they are thawed and then laparotomy is performed to remove the internal organs, and the middle bones are removed to remove two or more pieces. It is dropped into three pieces. Thus, once the frozen fish body is thawed, the drip flows out from the fish body and the freshness is reduced.

Therefore, it is easily conceivable to use the saw blade-shaped cutting member 1 used for sawing such as a saw. The cutting member 1 has a clam formed by alternately bending the cutting edge portions 2 outward in order to reduce friction between the plate-shaped main body 3 and the cutting groove 4 of the cutting edge portion 2. When the frozen fish body is cut using the saw blade-shaped cutting member 1 in a frozen state, there is a clam on the cutting edge portion 2, and therefore, both sides of the main body 3 in the thickness direction on both sides 5a, 5b. The frozen fish body is cut at the width T1 in the thickness direction between the blade edge portions 2 protruding in one direction and connected to each other. Therefore, when a frozen fish body is cut by using such a conventional saw blade cutting member 1, there is a problem that the yield is low.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a frozen fish body processing apparatus which is capable of cutting a fish body in a frozen state and further improving the yield. Is.

MEANS FOR SOLVING THE PROBLEMS The present invention provides a conveying means for holding a frozen fish body and conveying the frozen fish body toward the downstream side in the conveying direction, and a disc-shaped main body which is rotationally driven around a rotation axis, and is rotated. Facing the downstream side in the direction, the first cutting edge extending obliquely toward either one of the two virtual planes as it extends radially outward from the center between the two virtual planes including both side surfaces in the thickness direction of the main body. Saw blade-shaped cutting member in which circumferentially alternating first blade edge portions each having a second blade edge portion and second blade edge portions having a second blade edge that extends obliquely toward the other of the two virtual planes are formed. And a frozen fish body that has been transported to the downstream side in the transport direction by the transport means, using the saw blade-shaped cutting member to cut the frozen fish body.

Action According to the present invention, the first cutting edge having the first cutting edge extending obliquely toward any one of the virtual planes from the center between the virtual planes including both side surfaces in the thickness direction of the main body to the outside in the radial direction A second edge having a blade edge portion and a second blade edge extending obliquely toward the other of the two virtual planes.
A saw blade-shaped cutting member is constituted by the blade tip portion. By cutting the frozen fish body using the saw blade-shaped cutting member, the first cutting edge portion and the second cutting edge portion are formed to have a width in the thickness direction smaller than that of the prior art. Therefore, the yield when the frozen fish body is cut can be improved. Moreover, since the fish can be cut in the frozen state, the fish to be landed in the frozen state in a fishing boat can be generally processed without thawing. When the fish is treated in the frozen state without being thawed as described above, it is possible to prevent the freshness due to the outflow of the drip due to the thawing and the accompanying deterioration of the taste to be prevented, and the labor and time for thawing the frozen fish can be prevented. Since the time can be deleted, the efficiency of fish processing work can be significantly improved.

Embodiment FIG. 1 is a front view showing a simplified overall structure of an embodiment of the present invention, and FIG. 2 is a plan view of the embodiment shown in FIG. A pair of start side pulleys 10a, 10b that are driven to rotate about the rotation axis, and a pair of end side pulleys 11a, 11b having rotation axes parallel to the start side pulleys 10a, 10b, respectively.
The endless conveyor belts 12a and 12b are respectively wound around and stretched over. These pulleys 10a, 10b; 11a,
Conveying means 13 is constituted by 11b and the conveying belts 12a, 12b. An abdominal part cutting rotary blade 14 that is a saw blade-shaped cutting member that is driven to rotate about a horizontal rotation axis is provided in the vicinity of the downstream side in the transport direction A of each of the starting end side pulleys 10a and 10b.
Before the abdomen of the fish F is cut in the head-to-tail direction by the abdominal cutting rotary blade 14, the starting end side pulley 10
The head of the fish body F is cut by the head cutting means 15 provided closer to the upstream side of the conveyance direction A than the a and 10b.

Referring also to FIG. 3, the head cutting means 15 includes a pair of endless conveyor belts 16a, 16b arranged perpendicularly to the extending direction of the conveyor belts 12a, 12b and the conveyor belts 16a, 16b. 1
A rotary round blade 17 for cutting a head that is a saw blade-shaped cutting member that is disposed close to one side of 6b and is driven to rotate around a horizontal rotation axis that is perpendicular to the extending direction of the conveyor belts 16a and 16b. Have. Each of the conveyor belts 16a and 16b is wound around a pair of pulleys (not shown).
The fish body F whose abdomen is directed toward the downstream side in the transport direction B is sandwiched between 16a and 16b, and the fish body F is transported toward the downstream side in the transport direction B, and the fish body F is rotated by the rotary head 17 for cutting the head. The head is cut off. The fish body F with its head removed in this manner is arranged in the vicinity of the upstream side of the starting end side pulleys 10a, 10b in the conveying direction A, and the posture F of the fish body F directs its abdomen toward the conveying direction B downstream side. The posture is changed from the open state to the state of being vertically downward, and is supplied between the starting end side pulleys 10a and 10b.

The fish body F whose head is cut off in this way is frozen at a temperature of, for example, -3 to -10 ° C, and therefore the above-mentioned conveyor belt is used.
In order to prevent the fish F from slipping off between 16a and 16b, a plurality of pins 18a and 18b are planted on the surfaces of the conveyor belts 16a and 16b that face each other. Therefore, when the pins 18a, 18b bite into the fish body F sandwiched by the conveyor belts 16a, 16b and the head is cut by the head cutting rotary blade 17, The fish body F is not displaced, and the head is cut so as to include a predetermined position, for example, near the base of the pectoral fin.

When the fish body F passes through such a head-cutting rotary blade 17, the conveyor belts 16a and 16b are provided by a plurality of pairs of pressing rollers 19a1 to 19a4 and 19b1 to 19b4 provided along the conveying direction B. Then, they are elastically pressed in the directions close to each other. The rollers 19a1 to 19a4; 19b1 to 19b4 are compression springs 20a1 to 20a4; 20b1.
~ 20b4 spring biases towards each other.
Therefore, when the fish F is cut by the rotary head for cutting head 17, the rotational driving force of the rotary blade for cutting head 17 does not displace the fish F unnecessarily. It is possible to reliably maintain the state of being sandwiched by the transport belts 16a and 16b. Moreover, the fish body F is interposed between the respective conveyor belts 16a and 16b.
Is not displaced, there is no possibility that the predetermined cutting position is displaced as described above, and it is possible to accurately cut the desired cutting position and prevent the yield from decreasing. In this way, the frozen fish body F is rotated by the rotary head 17 for cutting the head.
In order to cut the head of the
The peripheral portion of the is formed in the shape of a saw blade.

FIG. 4 is a partially enlarged view showing the vicinity of the cutting edge of the rotary cutting blade 17 for head cutting, and FIG. 5 is a section line V-V of FIG.
6 is a cross-sectional view as seen from FIG. 6, and FIG. 6 is a cross-sectional line VI- of FIG.
FIG. 6 is a sectional view seen from VI. The rotary blade 17 for cutting the head, which is a saw blade-shaped cutting member, is made of, for example, carbon tool steel, high-speed steel or stainless steel, and faces the peripheral portion of the disc-shaped main body 20 in the downstream side in the rotational direction C. In the thickness direction of the main body 20, that is, in the radial direction outward from the central axis line 1 between the two virtual planes including the left and right side surfaces 21a, 21b in FIG. 5 and FIG. That is, in this embodiment, a first cutting edge portion 23 having a first cutting edge 22 that extends obliquely toward a virtual plane including the side surface 21a, and one of the two virtual planes that is closer to the other, that is, a virtual side surface 21b. The second cutting edge 2 that is inclined and extends toward the plane
Second cutting edge portions 25 having 4 are formed alternately in the circumferential direction.

More specifically, the tip edge P1 of the first cutting edge 22 is in an imaginary plane including the one side surface 21a, and the root P2 of the first cutting edge 22 closest to the radial inner side is the center in the thickness direction. It is on line 1. With such a first cutting edge 22, a flank 26 is formed on the virtual plane side including the side surface 21a with respect to the cutting edge 22, and a rake surface 27 is formed on the virtual plane side including the other side surface 21b. The tip portion P3 of the second cutting edge 24 is in an imaginary plane including the other side surface 21b, and the base P4 thereof is on the central axis 1. With such a second cutting edge 24, the rake face 28 is formed on the virtual plane side including the one side face 21a, and the flank face 29 is formed on the virtual plane side including the other side face 21b.

By cutting the frozen fish body F by such first and second cutting edge portions 23, 25, only the portion corresponding to the thickness T2 is cut off as, so to speak, the above-mentioned prior art. As mentioned above, the yield can be improved by the difference in the thickness (T1-T2) of the cutting edge portion 2 having the clams. Moreover, since the tip portions P1 and P3 of the first and second blade edges 22 and 24 of the present invention do not project outward from the virtual plane including the side surfaces 21a and 21b, when the frozen fish body is cut, The cutting surface can be cut into a flat shape as compared with the cutting surface having the saw blade-shaped cutting member 1 having a hook as in the prior art, and the quality of the cut meat can be improved. . It is conceivable that the tip portions P1 and P3 of the first and second cutting edges 22 and 24 are formed inward of a virtual plane including the side surfaces 21a and 21b. In this way, the width P2 between the side surfaces 21a, 21b is larger than the width cut by the cutting edges 22, 24, and thus each side surface 2
1a, 21b not only needs a large torque to drive the rotary blade 17 for head cutting by biting with a large frictional force between the head and the body of the fish body, and each side surface 21a, Since 21b slides on the end surface of the cut surface with a large amount of friction, the end surface of the cut surface becomes rough, which may deteriorate the quality of the cut. However, when cutting a relatively small fish body, such as a sardine, there is practically no hindrance even when the tip portions P1 to P3 are inward of a virtual plane including the side surfaces 21a and 21b. The yield can be improved by cutting with a narrow cutting width.

Referring again to FIG. 1 and FIG. 2, the head is cut by the saw blade-shaped rotary cutting blade 17 having the first and second cutting edge portions 23 and 25 as described above. Frozen fish body F
Is sandwiched between the conveyor belts 12a and 12b between the starting end side pulleys 10a and 10b, and the abdomen is cut in the head-to-tail direction by the abdominal part cutting rotary blade 14. The rotary blade 14 for cutting the abdomen is also formed with first and second cutting edge portions 23, 25 similarly to the rotary blade 17 for cutting the head. The frozen fish body F whose abdomen has been incised by the rotary abdominal cutting rotary blade 14 has a conveyor belt 12a,
In the state of being sandwiched by the 12b, further in the transport direction A.
It is transported to the downstream side, the internal organs in the abdominal cavity are forcibly scraped off by the gating pulley 30, the internal organs are removed, and further transported to the downstream side in the transport direction A, and a pair of rotary bone cutting blades for removing the middle bones. The middle bones are cut off by 31a and 31b, and are processed into a fillet shape in the frozen state. The rotary bone cutting blades 31a and 31b for removing the inner bone also have the first and second cutting edge portions 23 and 25, respectively, similarly to the rotary cutting blade 17 for cutting the head and the rotary cutting blade 14 for cutting the abdomen. Has been formed. Therefore, the fish body F can be processed into a fillet shape while being frozen.

As described above, the fish can be cut in the frozen state, so that it is not necessary to thaw it, and thus it is possible to prevent the outflow of the drip due to thawing and the deterioration of the taste associated therewith, and the time and labor required for thawing. Can be reduced, and the fish body processing work can be efficiently performed.

As described above, according to the present invention, since the fish body is cut by the saw blade-shaped cutting member having the first and second blade tip portions, the yield can be improved, and The end surface of the cutting opening can be smoothly cut to improve the product quality of the fillet. Moreover, since the fish can be processed in a frozen state, the labor required for thawing is not required, and the efficiency of fish processing can be improved.

[Brief description of drawings]

FIG. 1 is a front view showing a simplified overall structure of an embodiment of the present invention, and FIG. 2 is a plan view of the embodiment shown in FIG.
FIG. 3 is an enlarged view showing the vicinity of the rotary cutting blade 17 for head cutting,
FIG. 4 is an enlarged view showing the vicinity of the cutting edge of the rotary cutting blade 17 for head cutting, FIG. 5 is a sectional view taken along the section line V-V in FIG. 4, and FIG. 6 is shown in FIG. Sectional view seen from the cutting plane line VI-VI,
FIG. 7 is a view showing a conventional saw blade-shaped cutting member 1, and FIG. 8 is a bottom view seen from below in FIG. 13 ... Conveying means, 14 ... Rotating blades for cutting abdomen, 16a, 16b ... Conveying belts, 17 ... Rotating blades for cutting head, 20 ... Main body, 21a, 21
b ... side surface, 22 ... first cutting edge, 23 ... first cutting edge portion, 24 ... second cutting edge portion, 25 ... second cutting edge portion, 30 ... gutting pulley, 31a, 31b ... rotary bone cutting blade for removing inner bone

Claims (1)

[Claims] 1. Conveying means for sandwiching and conveying a frozen fish body toward the downstream side in the conveying direction, and a peripheral portion of a disk-shaped main body which is driven to rotate about a rotation axis, and faces the downstream side in the rotating direction. A first cutting edge portion having a first cutting edge that extends obliquely toward either one of the two virtual planes from the center between two virtual planes that respectively include both side surfaces in the thickness direction of the main body, as going outward in the radial direction. And a saw blade-shaped cutting member in which second blade edge portions having second blade edges that are inclined and extend toward the other of the two virtual planes are alternately formed in the circumferential direction, An apparatus for processing frozen fish bodies, characterized in that the frozen fish bodies transported to the downstream side in the transport direction by means are cut by the saw blade cutting member.