JP6976563B2 - Fish head cutting device - Google Patents

Description

The present invention relates to a head cutting device for large fish such as yellowtail, amberjack, and amberjack.

When cutting the head of a large fish such as a brim, if the cutting position of the head of the fish by the cutter is set based on the length of the head of the fish, the length of the head of the fish will vary depending on the size. If the length of the head is short, a part of the flesh of the torso will stick to the cut head side, and if the length of the head is long, a part of the head will be part of the torso. A situation will occur in which the head remains on the side and the head cannot be cut accurately.

On the other hand, the distance between the gill lid of the fish and the base of the pectoral fin is almost constant even if the size of the fish varies. The head can be cut with relatively high accuracy. Therefore, as described in Patent Document 1, the applicants of the present application have developed a device for cutting the head based on the pectoral fin of a fish body.

That is, the fish head cutting device described in Patent Document 1 includes a frame-shaped stopper member that receives the tip mouth portion of the fish head and a fish body that is supplied to the stopper member in a lying state. A pectoral fin hooking member made of an elastic plate material arranged above the supply path and the supply path on the supply terminal side (front side) of the fish body supply path, and above the pectoral fin hooking member and the stopper member. A head cutter that is arranged so that it can move up and down and whose lower end is curved in an arc along the eel lid of the fish, and a stopper that presses the tip of the head of the fish that is received by the stopper member. An air cylinder equipped with a head pusher that releases the reception of the head from the member, and the air cylinder is moved backward toward the lower side of the head cutter to push back the fish body by the head pusher, and the pectoral fin is hooked on the pectoral fin. It is provided with a push-back means for hooking on the stop member.

With this configuration, when the fish is laid down and its head is turned forward and sent into the fish supply path, the pectoral fin on the body side facing upward of the fish is the pectoral fin guide member. It passes through this guide member while sliding on the lower surface, and the mouth portion of the head is received by the stopper member and temporarily stops in that state.

Next, the pectoral fin of the fish body is moved by operating the air cylinder equipped with the head pusher to separate the mouth of the fish body from the stopper member rearward by the head pusher and moving the air cylinder equipped with the head pusher rearward. The pectoral fin hooking member is hooked up to the base, and the part between the gill lid and the pectoral fin of the fish is positioned below the head cutter. When the head cutter is moved downward in this state, the head of the fish can be cut along the gill lid by the cutting edge of the head cutter.

Japanese Unexamined Patent Publication No. 2017-85976

However, according to the fish head cutting device described in Patent Document 1, the pectoral fin hooking member is arranged in a fixed state above the supply path on the supply end side (front side) of the fish body supply path. In order to hook the pectoral fin of the fish body to this pectoral fin hooking member and position the head of the fish body at the cutting position, once the pectoral fin is slid against the lower surface of the pectoral fin hooking member, the pectoral fin hooking member is passed through. After the mouth is received by the stopper member, the mouth of the fish is detached rearward from the stopper member by the head busher, and the head pusher itself is moved rearward so that the pectoral fin of the fish is hooked to the base of the fish. Not only does it require a process of hooking to the stop member, which complicates the entire device, but also the time from the supply of the fish to the positioning of the head at the cutting position becomes relatively long, and the efficiency of cutting the head decreases. There is a problem such as.

Furthermore, the distance to push back the fish body by the head pusher or the like from the state where the mouth of the head is received by the stopper member needs to be longer than the length of the pectoral fin. However, there is a problem that the head is displaced from the lower part of the head cutter and the head cannot be cut accurately along the gill lid by the head cutter.

The present invention has been made in view of such problems, and an object of the present invention is to cut the head of a large fish such as yellowtail accurately and efficiently by a simple means. The device is to provide.

In order to achieve the above object, the head cutting device of the fish body of the present invention, as described in claim 1, has the fish body in a lying state and the head is directed in the supply direction to end the front supply. A fish body supply path that slides toward the part and a fish body supply path that is freely arranged back and forth in front of the terminal side of this fish body supply path, and receives the tip of the head of the fish body when the pectoral fin of the fish body reaches the vicinity of the cutting position. A head receiving member that stands by at a fixed position, a driving means of the head receiving member, and a fish body that is movably arranged back and forth along the fish body supply path and is supplied to the fish body supply path. Subsequently, it moves forward and hooks on the base of the pectoral fin of the fish body, and the tip of the head is received by the head receiving member. The head of the fish body is advanced to the head cutting position. A member, a driving means for the pectoral fin hooking member, and a head cutter that is movably arranged above the head cutting position and cuts the head of the fish along its gill lid when it moves down. The head cutter is provided with a driving means and a discharging means for the cut head and the body portion.

In the invention for cutting the head of a fish body configured as described above, the invention according to claim 2 comprises an air cylinder arranged in front of the fish body supply path as a driving means of the head receiving member, and the front and rear of the air cylinder. A head receiving member is attached to the tip of the piston lot that expands and contracts in the direction, and when the head receiving member receives the tip of the head of the fish, the pressure of the air cylinder is increased to a high pressure, and the pectoral fin hooking member It is characterized in that it is configured to change to a low pressure when it is hooked on the base of the pectoral fin.

According to the third aspect of the present invention, the pectoral fin hooking member is made of a rectangular thin plate long in the width direction of the fish body supply path, and the length direction thereof is directed to the width direction of the fish body supply path on the road surface of the fish body supply path. It is characterized in that it is in contact with each other and is slidably arranged in the front-rear direction, and the driving means of the pectoral fin hooking member is from an air cylinder mounted on the outer bottom surface of the fish body supply path as described in claim 4. The air cylinder is characterized in that a pectoral fin hooking member is attached to the tip of a piston rod that expands and contracts in the front-rear direction via a mounting member.

According to the fifth aspect of the present invention, the fish body supply path is inclined downward from the supply start end side toward the supply end portion, and the lower side of the fish lying down in the center of the width direction of the fish body supply path. An opening for receiving the pectoral fin is provided, and guide side plates are provided on both sides of the fish supply path to elastically press the back and abdomen of the fish to guide the fish to the head cutting position. It is characterized by being.

In the invention according to claim 6, a head mounting frame of a fish body is disposed below the head cutter adjacent to the supply end of the fish body supply path, and the cutting edge of the head cutter is passed through the head mounting frame. A cutting edge insertion hole that penetrates in the vertical direction is provided, and the space surrounded by the inner peripheral surface of the head mounting frame is formed as a drop opening for the head cut by the head cutter to drop downward. It is characterized by.

The invention according to claim 7 is a structure of a discharge means for a cut head, and the discharge means is arranged at a drop port provided on the head mounting frame and below the drop port. It is characterized by consisting of a discharge chute.

The invention according to claim 8 is a structure of a discharge means for a body portion of a fish body having a cut head, and the fish body supply path is configured to be tilted downward by an operation of an air cylinder with the rear end as a fulcrum. The fish body supply path is characterized by having the front end of the fish body supply path as the discharge port of the body portion, and the discharge port and the body portion discharge conveyor arranged below the discharge port.

Further, in the invention according to claim 9, when the head of a fish body is received by a head receiving member, the reception is detected and a signal is emitted to an air cylinder which is a driving means of the pectoral fin hooking member. It is characterized in that a sensor that can operate the air cylinder is arranged.

According to the invention according to claim 1, the head receiving member of the fish body, which is arranged so as to be movable back and forth on the supply end side of the fish body supply path, has the fish body lying down on the fish body supply path and the head thereof. When it is sent in a state facing the supply direction, it stands by at a fixed position so as to catch the tip of the head of the fish that has reached the vicinity of the head cutting position of the end of supply, so the fish The pectoral fin can be positioned directly below the head cutter without passing through the head cutting position, and the head is placed in the correct head cutting position without causing delusion due to pushing back of the fish head. The head can be cut quickly by the head cutter in this state, and the head of the fish supplied to the head cutting position through the fish supply path can be sequentially and efficiently cut.

Further, a pectoral fin hooking member is arranged so as to be movable back and forth along the fish body supply path, and this pectoral fin hooking member is forward to the fish head cutting position following the fish body supplied to the fish body supply path. Since it is configured to be moved to the position where the head of the fish is cut and held at the base of the pectoral fin of the fish, the pectoral fin hooking member is hooked on the pectoral fin of the fish and the head is cut. When advancing to, the head receiving member receiving the tip of the head retracts backward according to the length of the head, and the head of the fish is quickly and accurately moved to the cutting position. With a simple structure, the head can be cut with a head cutter along the gill lid with good yield.

According to the second aspect of the present invention, the driving means of the head receiving member comprises an air cylinder arranged in front of the fish body supply path, and the head receiving member catches the tip of the head of the fish body. In some cases, the pressure of this air cylinder is increased to a high pressure, and when the pectoral fin hooking member is hooked to the base of the pectoral fin, the pressure is lowered. The head of the fish can be firmly received by the head receiving member at the position immediately before the cutting position without allowing the pectoral fin of the fish to pass forward from the cutting position below the head cutter.

Further, in this way, following the state in which the head of the fish body is received by the head receiving member, the pectoral fin hooking member advances toward the head cutting position and is received by the head receiving member. When the outer circumference of the rim of the eel lid of the fish body was hooked on the pectoral fin of the fish body and moved to the head cutting position just below the head cutter, the air cylinder for driving the head receiving member became low pressure. It acts as an air cushion and retracts elastically according to the length of the fish head, and even if the size of the fish varies, all the heads of the fish are sequentially and automatically moved to the correct cutting position. Can be positioned to.

According to the invention of claim 3, the pectoral fin hooking member is made of a rectangular thin plate long in the width direction of the fish body supply path, and the length direction of the pectoral fin hooking member is directed to the width direction of the fish body supply path. Since it is slidably arranged in the front-rear direction in contact with the road surface, this pectoral fin hooking member should be inserted from the rear into the inner surface of the pectoral fin facing the lower side of the fish body supplied in a lying state on the fish body supply path. The fish can be easily hooked to the base of the pectoral fin, and the whole fish can be easily and smoothly advanced in a stable hooked state, and the fish can be headed while pressing the tip of the head against the head receiving member. It can be positioned at the partial cutting position.

As described in claim 4, the driving means of the pectoral fin hooking member comprises an air cylinder mounted on the outer bottom surface of the fish body supply path, and the mounting member is attached to the tip of a piston rod that expands and contracts in the front-rear direction of the air cylinder. Since the pectoral fin hooking member is mounted via the air cylinder, it is possible to form a simple driving means in which the air cylinder is arranged by utilizing the outer bottom surface of the fish body supply path, and the pectoral fin hooking member is an air cylinder. When the piston rod is moved directly in the expansion / contraction direction and hooked on the pectoral fin of the fish body, the fish body can be pushed forward with a strong force.

According to the invention of claim 5, since the fish supply path is inclined downward from the supply start end side toward the supply end portion side, the fish is supplied by sliding on the inclined fish body supply path. It can smoothly supply to the head receiving member provided on the terminal side, and in addition, an opening for receiving the lower pectoral fin of the lying fish body is provided in the central part in the width direction of this fish body supply path. Therefore, the pectoral fin can be expanded downward from the base of the pectoral fin toward the tip while moving forward in the fish supply path, so that the fish can be moved so as to be in contact with the road surface of the fish supply path. The above-mentioned pectoral fin hooking member can be reliably inserted between the inner surface of the pectoral fin and the body of the fish, and can be easily hooked to the base of the pectoral fin.

Further, on both sides of the fish body supply path, guide side plates are provided to elastically press the back and abdomen of the fish body supplied in a lying state to guide the fish body to the head cutting position. While maintaining a constant supply posture of the fish body, the head of the fish body can be accurately received at the cutting position by the head receiving member of the fish body without causing a deviation in the head cutting position by the head cutter.

According to the invention of claim 6, a frame for mounting the head of the fish is arranged below the head cutter adjacent to the supply end of the fish supply path, and the cutting edge of the head cutter is mounted on the frame on the head of the fish. Since the cutting edge insertion hole that penetrates in the vertical direction is provided, the part of the fish head to be cut, that is, the part along the eel lid is received on the cutting edge insertion hole in the head mounting frame. Then, the head cutter that passes through the cutting edge insertion hole pushes through the portion to be cut, so that the cutting can be performed reliably.

Furthermore, since the space surrounded by the inner peripheral surface of the fish head mounting frame is formed as a drop opening for dropping the head cut by the head cutter downward, the head is cut at the same time as the head cutter is cut. It can be automatically dropped and discharged toward the drop opening with the fish head receiving frame as a fulcrum, and the fish head can be cut and removed efficiently.

According to the invention of claim 7, the cutting means for discharging the cut head is from a drop port provided in the fish head mounting frame and a discharge chute arranged below the drop port. Therefore, the head of the fish cut by the head cutter as described above can be discharged from the drop port to a predetermined place outside through the discharge chute.

According to the invention of claim 8, the fish body supply path is configured to be tilted downward by the operation of the air cylinder with the rear end as a fulcrum, and the means for discharging the body of the fish body from which the head is cut is provided. Since the front end of the fish body supply path is used as the discharge port of the body and consists of this discharge port and the body discharge conveyor arranged below the discharge port, the head is cut by the head cutter and at the same time the head is cut. The body of the fish separated from the head by tilting the supply path downward can be transferred onto the body discharge conveyor from the discharge port inclined toward the bottom of the head supply path, and the head can be discharged. Similarly, the body can be discharged quickly, and the head can be cut efficiently.

Further, according to the invention of claim 9, when the head of the fish body is received by the head receiving member, the reception is detected and a signal is sent to the air cylinder which is the driving means of the pectoral fin hooking member. Since a sensor that activates the air cylinder is arranged, the operation process from the detection of the supply position of the head by this sensor to the cutting position of the pectoral fin pectoral fin hooking member and the operation of the head receiving member The process, the head cutting process by the head cutter, and the discharge process of the separated head and body are set to be performed sequentially according to the time schedule, and the process from the supply of the fish body to the head cutting and discharge is automated. It is possible to cut the head of the fish in sequence efficiently even if the size varies.

The plan view of the head cutting apparatus of the fish body of this invention. The side view. A simplified front view of the whole. Enlarged side view of the main part. A side view of a state in which a fish body is supplied and received by a head receiving member. The plan view. Side view of the state where the fish body is pushed to the head cutting position by the pectoral fin hooking member. The plan view. Longitudinal side view of the main part. Side view of the state where the head is cut by the head cutter. The plan view. Side view of the fish body with the body discharged.

Explaining a specific embodiment of the present invention with reference to the drawings, in FIGS. A fish body supply path 2 that can be supplied while the fish body A is in a lying state and its head A1 is oriented in the supply direction and slid toward a front supply end portion, and a supply end portion of this fish body supply path 2. On the head receiving member 3 which is arranged so as to be movable back and forth on the front side of the head and receives the tip of the head of the fish body A which has reached the supply end portion at a fixed position, and on the fish body supply path 2. A pectoral fin hooking member 4 that is arranged so as to be movable back and forth along the head, moves forward following the supply of the fish body A, and positions the fish body A at the head cutting position while the base of the pectoral fin A3 of the fish body A is stopped. It is provided with a head cutter 5 that cuts the head of the fish body A and separates it from the body A2.

Further, the machine base 1 includes the driving means 6 of the head receiving member 3, the driving means 7 of the pectoral fin hooking member 4, the driving means 8 of the head cutter 5, and the fish body A separated by the head cutter 5. It is equipped with discharge means 9 and 10 for discharging the head A1 and the body A2 to the outside of the machine, respectively, and a head mounting frame 11 for receiving the surface of the fish body A facing the lower side at the cutting position. ..

The fish body supply path 2 has a road surface formed by a flat metal plate having a constant width, and is gently inclined downward from the supply start end side to the supply end portion side of the fish body A, and further, this road surface. A flat rectangular pectoral fin guide opening 12 having a constant width for receiving the downwardly downward pectoral fin A3 of the fish body A supplied in a lying state is provided in the central portion in the width direction in the front half portion of the above. ..

Further, on both sides of the fish body supply path 2, the back and abdomen of the fish body A supplied to the fish body supply path 2 in a lying state with the head A1 facing forward are elastically sandwiched and the fish body A is headed. A pair of left and right guide side plates 13 and 13 that guide the portion to the cutting position are arranged. The rear ends of these guide side plates 13 and 13 are rotatably supported on both side ends of the fixed frame 14 provided above the middle portion of the fish body supply path 2, respectively, and are normally the front ends. The distance between the tips is set to be smaller than the width between the back and the abdomen of the fish body A by inclining toward each other in a direction that narrows the distance between the facing surfaces thereof.

Further, these guide side plates 13 and 13 are configured to rotate in the left-right direction at the same angle at the same time so that the central portion in the width direction of the fish body A passes through the central portion of the distance between the facing surfaces thereof. At the same time, they are urged by a spring (not shown) in a direction in which the distance between the facing surfaces thereof is narrowed so as to elastically hold the fish body A.

The head receiving member 3 is formed in a cup shape that opens rearward so as to receive the tip of the head A1 of the fish body A. The driving means 6 of the head receiving member 3 is composed of an air cylinder 6a arranged in front of the fish body supply path 2 and mounted on the machine base 1 in the front-rear direction, and the piston rod 6b thereof is attached to the air. The head receiving member 3 is integrally attached to the tip of the piston rod 6b so as to extendably project from the rear end of the cylinder 6a toward the rear.

The air cylinder 6a is fixed on the extension line of the central portion in the width direction of the fish body supply path 2 in a state of being gently inclined at the same angle as the fish body supply path 2, and the piston rod 6b is normally extended. The head receiving member 3 is configured to stand by at a fixed position for receiving the head A1 of the fish body A that has reached the top of the head mounting frame 11 provided at the head cutting position of the fish body A. is doing.

Specifically, when the pectoral fin A3 of the fish body A whose head should be cut reaches a position directly under the head cutter 5, that is, a position where there is a small interval behind the head cutting position, the head of the fish body A is reached. The part is received and the fish body A is made to stand by at a position where it can be prevented from moving forward any further.

Further, in a state where the head receiving member 3 is waiting at a fixed position to receive the head of the fish body A, the air cylinder 6a which is the driving means of the head receiving member 3 becomes high pressure. The head A1 of the fish body A that is held and supplied on the fish body supply path 2 is configured to be firmly received at that position without retracting the head receiving member 3.

Further, a sensor (not shown) for detecting the reception of the fish body A when it is received by the head receiving member 3 is arranged on the side of the machine base 1, and the sensor is used to detect the reception. A signal is sent to the air cylinder 6a to reduce the pressure of the air cylinder 6a, and at the same time, the fish body A is hooked to the pectoral fin A3 by the pectoral fin hooking member 4, and the process of pushing the fish body A to the cutting position in that state, and the head by the head cutter 5. The cutting process of A1 and the rising / returning process of the head cutter 5 to the original position, the retreat of the head receiving member 3, the discharge of the cut fish body A from the head A1 and the body A2, and the head receiving member 3 It is set so that the head cutting processing operation for the next fish body A such as returning to the standby position is automatically performed according to a predetermined time schedule.

The pectoral fin hooking member 4 is made of a rectangular metal thin plate long in the width direction of the fish body supply path 2, and as shown in FIG. 1, the length direction thereof is directed toward the width direction of the fish body supply path 2. It is arranged so as to be slidable in the front-rear direction in contact with the road surface of the front half of the fish body A, and when the fish body A is supplied, it is provided in the front half of the fish body supply path 2 and is an opening for the pectoral fin guide. A position on the rear end of the portion 12, specifically, when the head A1 of the fish body A is received by the head receiving member 3, there is a small distance from the tip of the pectoral fin A3 of the fish body A. I'm waiting at the position where I did.

As shown in FIG. 4, the driving means 7 of the pectoral fin hooking member 4 is composed of an air cylinder 7a mounted in the center of the outer bottom surface in the latter half of the fish body supply path 2 in the front-rear direction, and the piston rod 7b thereof. Is telescopically projected toward the front, and a pectoral fin hooking member 4 is attached to the tip of the piston rod 7b via a mounting member 15.

Specifically, the mounting member 15 includes a mounting plate material 15a having an L-shaped cross section in which the central portion of the back surface is fixed to the tip of the piston rod 7b of the driving means 7, and pectoral fin hooking members at both end portions of the mounting plate material 15a. The mounting shafts 15b and 15b are composed of mounting shafts 15b and 15b to which both end portions of 4 are fixed. It is inserted into 16 and 16 so that it can be moved in the front-back direction.

The lower end cutting edge 5a of the head cutter 5 for cutting the head A1 of the fish body A is formed in a curved shape along the mouth edge of the eel lid A4 of the fish body A, and the head A1 of the fish body A is cut at the cutting position. The head mounting frame 11 to be mounted is formed in a planar shape curved in the same shape as the cutting edge 5a of the head cutter 5, and is adjacent to the supply end of the fish body supply path 2 and directly below the head cutter 5. The head mounting frame 11 is provided with a slit-shaped cutting edge insertion hole 25 for passing the cutting edge 5a of the head cutter 5. The cutting edge insertion hole 25 is formed in a slit-shaped through hole having a constant width curved in the same shape as the cutting edge 5a of the head cutter 5.

The head mounting frame 11 has its upper surface flush with the road surface of the fish body supply path 2 or slightly above the road surface of the fish body supply path 2 and its both end portions are fixed on the machine base 1. At the same time, the space portion surrounded by the arcuate inner peripheral surface of the head mounting frame 11 is formed in the drop port 9a where the head A1 cut by the head cutter 5 is dropped downward.

The upper end opening of the discharge chute 9b faces below the drop port 9a, and the head discharge means 9 for discharging the head A1 cut by these drop ports 9a and the discharge chute 9b to the outside is provided. It is composed.

In the fish body supply path 2, the front end, which is the supply end portion of the fish body A, is formed at the discharge port 10a of the body portion A2 from which the head A1 of the fish body A is cut, and the lower surface of the rear end portion of the fish body supply path 2. Is rotatably supported in the vertical direction by a shaft 18 at the rear end of the machine base 1. Further, an air cylinder 17 for tilting the fish body supply path 2 is arranged on the machine base 1 below the fish body supply path 2 in a state of being pivotally supported so as to be rotatable in the front-rear direction on the base end side thereof. By connecting the tip of the piston rod 17a of the air cylinder 17 to the central portion of the lower surface of the fish body supply path 2 and contracting the piston rod 17a, the fish body supply path 2 is tilted downward with the shaft 18 as a fulcrum. The body A2 of the fish body A whose head A1 has been cut is discharged, and the piston rod 17a is extended to return it to its original position.

Below the body discharge port 10a of the fish body supply path 2, the conveyor 10b that discharges the body A2 to the outside of the machine.
Is arranged, and the body discharge port 10a and the body discharge conveyor 10b constitute the body discharge means 10. A discharge chute 10c is provided on the discharge start end of the body discharge conveyor 10b to temporarily receive the body A2 discharged from the body discharge port 10a of the fish body supply path 2 and send it to the body discharge conveyor 10b. However, it is not always necessary to provide this discharge chute 10c.

As shown in FIGS. 2 and 3, the driving means 8 of the head cutter 5 arranged above the head cutting position of the fish body A is a pair of upper and lower guide cylinders arranged on both sides of the machine base 1, respectively. 19a, 19a; The left and right rods 20a and 20b that are movably inserted and supported in 19b and 19b are connected to the upper ends of these rods 20a and 20b, and the above head is placed on the lower surface of the central part in the length direction. The upper horizontal rod 21a to which the upper end of the cutter 5 is attached, the lower horizontal rod 21b connecting the lower ends of the rods 20a and 20b, the lower center of the lower horizontal rod 21b, and the machine base 1. It consists of a crank mechanism 23 connected to the rotating shaft of the drive motor 22 installed on the bottom surface, and by rotating the rotating shaft of the drive motor 22 once, the head cutter 5 attached to the lower surface of the upper horizontal rod 21a is moved up and down. It is configured to reciprocate once in the direction.

Above the fish body supply path 2, a fish body holding plate 24 that elastically presses the surface of the upward-facing body of the fish body A supplied in a lying state is arranged on the fish body supply path 2. However, this holding plate 24 is provided to more reliably prevent the delicate delusion of the fish body A when cutting the head of the fish body A, and even without this holding plate 24, the holding plate 24 is provided. , The head A1 of the fish body A can be cut accurately and efficiently by the head cutter 5.

Next, to explain the operation of the head cutting device of the fish body A configured in this way, a large fish body A such as a yellowtail or amberjack is placed on the fish body supply path 2 with its head A1 facing forward and the head A1 is directed forward. The fish is supplied from the supply start end side to the end side of the fish body supply path 2 in a lying state with the back portion facing one guide side plate 13 side and the abdomen facing the other guide side plate 13 side.

The fish body A is supplied to the fish body supply path 2 one by one by the worker, but the fish body is behind the start end of the fish body supply path 2 in the machine stand 1 without the worker. Even if a conveyor that travels in a direction orthogonal to the supply path 2 is arranged and the large fish A conveyed by this conveyor is sequentially supplied onto the fish body supply path 2 by a pushing means or the like. good.

The fish body A supplied on the fish body supply path 2 slides on the upper surface of the ramp of the fish body supply path 2 which is inclined downward from the rear end side toward the front end, and is predetermined in front of the end portion of the fish body supply path 2. It moves toward the head receiving member 3 waiting at the position. At this time, the fish body A is elastically sandwiched by the guide side plates 13 and 13 on both sides in which the distance between the facing surfaces is narrowed toward the front end, and the center of the fish body A in the width direction supplies the fish body. It is sent toward the head receiving member 3 in a state of being positioned on the center of the road 2, and as shown in FIGS. 5 and 6, when the supply end portion is reached, the head A1 of the fish body A becomes the head. It is located on the head drop opening 9a formed by the space surrounded by the arcuate inner peripheral surface of the upper frame 11, and the tip of the head A1 of the fish body A is the head receiving member. It is accepted by 3.

At this time, the inside of the air cylinder 6a, which is the driving means 6 of the head receiving member 3, is held at a high pressure, the piston rod 6b is greatly extended, and the head receiving member 3 is immobile at a fixed position. The fish body A is made to stand by at, and the tip of the head is firmly received by the head receiving member 3, and the fish body A does not advance any further, and the rim of the eel lid A4 of the head to be cut is pressed. The head is stopped in a state where it is positioned at a position where there is a small gap behind the head cutting position directly under the head cutter 5.

When the fish body A is laid down and supplied on the fish body supply path 2 toward the head receiving member 3, the downward pectoral fin A3 of the fish body A is located in the center of the front half of the fish body supply path 2. It moves forward along the opening 12 so as to face downward from the provided opening 12 (see FIGS. 1 and 9).

When the head of the fish body A reaches the head receiving member 3, the sensor detects the supply of the fish body A and simultaneously reduces the pressure of the air cylinder 6a, which is the driving means of the head receiving member 3, to a low pressure. Immediately after the air cylinder 6a, which is the driving means of the pectoral fin hooking member 4, is activated, the piston rod 6b is extended, and the pectoral fin A3 facing the lower side of the fish body A on the pectoral fin hooking member 4 has passed. Following the pectoral fin A3, the pectoral fin hooking member 4 advances and hooks on the base of the pectoral fin A3 along the inner surface of the pectoral fin A3 of the fish body A supplied to the head receiving member 3 side, and hooks the pectoral fin hooking member 4. Move forward until the part between the pelvic lid A4 of the head and the base of the pectoral fin A3 where the entire fish body A should be cut through the stopping force reaches the head cutting position just below the head cutter 5 (FIGS. 7 to 7). 9).

This forward movement distance varies depending on the length of the head to be cut, but the low pressure driving air cylinder 6a of the head receiving member 3 acts as an air cushion to receive the head. With the stop member 3 receiving the tip of the head of the fish body A, the driving piston rod 6b of the head receiving member 3 elastically retracts according to the length of the head of the fish body, and the pectoral fin is stopped. The member 4 moves forward to the position where the head A1 between the pectoral fin A3 and the gill lid A4 of the fish body A to be cut, that is, the outer peripheral portion of the rim of the gill lid A4 reaches directly under the head cutter 5, as described above. The head A1 of the fish body A can be accurately positioned at the cutting position on the head mounting frame 11 while eliminating the deviation of the cutting position due to the length of the head.

In this way, when the pectoral fin hooking member 4 is advanced to a certain position and the head A1 to be cut of the fish body A is positioned, the cut between the gill lid A4 of the fish body A and the pectoral fin A3 of the head A1 is performed. The portion of the eel lid A4 to be sewn along the rim is located on the cutting edge insertion hole 25 provided in the head mounting frame 11.

Next, after the operation of the pectoral fin hooking member 4, the drive motor 22 which is the driving means of the head cutter 5 is operated, and the head cutter 5 is moved via the crank mechanism 23 and the like as shown in FIGS. 9 and 10. By moving the cutting edge 5a, the head A1 of the fish body A is pushed off along the outer peripheral portion of the mouth edge of the eel lid A4 of the fish body A, and the cutting edge 5a protrudes downward from the cutting edge communication port 25 of the head mounting frame 11 and the fish body. After dividing A into the head A1 and the body A2, the head cutter 5 immediately rises to the original position and waits for the next fish body A to cut the head.

The lower end cutting edge 5a of the head cutter 5 is oriented in a direction away from the central portion of the cutting edge curved in an arc shape along the mouth edge of the gill lid A4 of the fish body A and both ends of the central portion of the arc-shaped cutting edge. The head A1 is cut along the gill lid A4 by the central portion 5a of the cutting edge curved in an arc shape, and the gill lid A4 in the fish body A is cut by the both side cutting edges of the straight shape. The head A1 can be cut so that the frontmost flesh of the back in contact with the gill and the frontmost flesh of the abdomen called "gill" are left on the body A2 side.

Following the rise of the head cutter 5 that cuts the head A1 of the fish body A, the driving air cylinder 6a of the head receiving member 3 operates to contract the piston rod 6b, and the head A1 of the fish body A is received. At the same time, the driving air cylinder 7a of the pectoral fin hooking member 4 operates to contract the piston rod 7b and return it to its original position.

When the head receiving member 3 retracts, the cut head A1 falls through the drop port 9a of the head discharging means 9 as shown in FIG. 11, and the machine passes through the discharging chute 9a arranged below. While being discharged to the outside, the air cylinder 17 for downward rotation of the fish body supply path 2 operates at the same time as the head cutter 5 rises to contract the piston rod 17a, and the fish body supply path 2 becomes as shown in FIG. , Tilt downward with the axis 18 as a fulcrum, and slide the body A2 of the fish body A on the fish body supply path 2 on the inclined road surface from the front end discharge port 10a of the fish body supply path 2 to the conveyor 10b through the chute 10c. It is transferred to the machine and discharged to the outside of the machine by this conveyor 10b.

After discharging the body A2 of the fish body A, the piston rod 17a of the air cylinder 17 extends and rotates upward to the original position of the fish body supply path 2 to prepare for the supply of the next fish body A and to prepare for the supply of the next fish body A. Immediately after the head A1 is discharged, the piston rod 6b of the driving air cylinder 6a of the stop member 3 extends and stands by at the predetermined position for the next head cutting of the fish body A.

1 Machine stand 2 Fish supply path 3 Head catching member 4 Pectoral fin hooking member 5 Head cutter 6 Head catching member driving means 7 Pectoral fin hooking member driving means 8 Head cutter driving means 9 Head discharging means
10 Body discharge means
11 Head mounting frame
13, 13 Guide side plate

Claims (9)

A fish body supply path in which the fish is laid down and its head is turned toward the supply direction and slid toward the front supply end portion, and a fish body supply path that is freely arranged back and forth in front of the end side of this fish body supply path. A head receiving member that stands by at a fixed position to catch the tip of the head of the fish when the pectoral fin of the fish reaches the vicinity of the cutting position, a driving means of the head receiving member, and the above-mentioned fish body. Arranged so as to be movable back and forth along the supply path, it moves forward following the fish body supplied to the fish body supply path, hooks on the base of the pectoral fin of the fish body, and the tip of the head is the above-mentioned head receiving member. A pectoral fin hooking member that advances the head of the fish body received by the fish to the head cutting position, a driving means for this pectoral fin hooking member, and a vertically movable arrangement above the head cutting position. It is characterized by being provided with a head cutter that cuts the head of the fish along its groin when it moves down, a driving means for this head cutter, and a discharge means for the cut head and the body. A device for cutting the head of a fish. The driving means of the head receiving member consists of an air cylinder arranged in front of the fish body supply path, and the head receiving member is attached to the tip of a piston lot that expands and contracts in the front-rear direction of the air cylinder. The pressure of the air cylinder should be increased to a high pressure when the tip of the head of the fish is received by the head receiving member, and the pressure should be changed to a low pressure when the pectoral fin hooking member is hooked to the base of the pectoral fin. The fish head cutting device according to claim 1. The pectoral fin hooking member consists of a rectangular thin plate that is long in the width direction of the fish body supply path, and its length direction is directed toward the width direction of the fish body supply path and is in contact with the road surface of the fish body supply path so as to be slidable in the front-rear direction. The fish head cutting device according to claim 1, wherein the fish body is arranged. The driving means of the pectoral fin hooking member consists of an air cylinder mounted on the outer bottom surface of the fish body supply path, and the pectoral fin hooking member is mounted on the tip of the piston rod that expands and contracts in the front-rear direction of the air cylinder via the mounting member. The fish head cutting device according to claim 1 or 3, wherein the head cutting device is characterized by the above. The fish supply channel is inclined downward from the supply start end side to the supply end end side, and an opening for receiving the lower pectoral fin of the lying fish body is provided in the center of the width direction of this fish body supply channel. Further, there is a claim characterized in that guide side plates are provided on both sides of the fish body supply path to elastically press the back and abdomen of the fish body to guide the fish body to the head cutting position. Item 1. The fish head cutting device according to Item 1. A frame for mounting the head of the fish is arranged below the head cutter adjacent to the supply end of the fish body supply path, and a cutting edge insertion hole penetrating in the vertical direction is provided in the frame on the head to allow the cutting edge of the head cutter to pass through. The first aspect of claim 1, wherein the space portion surrounded by the inner peripheral surface of the head mounting frame is formed as a drop opening for dropping the head cut by the head cutter downward. Head cutting device for fish. The first or sixth aspect of the present invention is characterized in that the discharge means of the cut head includes a drop port provided on the head mounting frame and a discharge chute arranged below the drop port. The described fish head cutting device. The fish body supply path is configured to be tilted downward by the operation of the air cylinder with the rear end as a fulcrum, and the front end of the fish body supply path is used as the discharge port of the body, and the discharge means of the body of the fish is the discharge port. The head cutting device for a fish according to claim 1, further comprising a body discharge conveyor arranged below the discharge port. When the head of the fish is received by the head receiving member, a sensor is provided to detect the reception and send a signal to the air cylinder, which is the driving means of the pectoral fin hooking member, to operate the air cylinder. The fish head cutting device according to claim 1 or 5, wherein the head cutting device is characterized by the above.

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