JPH0567271U - Fish demolition equipment - Google Patents

Abstract

(57) [Summary] [Purpose] Conventionally, the work of cutting off the head and removing internal organs of tuna and bonito fish has been done manually. And since these fish are large and heavy, workers have been forced to perform harsh and dangerous work. The present invention aims to provide a device for automating such dismantling work. [Construction] The present invention relates to a fish dismantling device for disassembling fish based on head length with good retention. A cutter for belly cutting that operates along a preset reference line with respect to the processing table, a means for measuring the head length of the fish on the processing table, and a half of the head length according to the output of the measuring means.
It consists of a cutter for head cutting that moves to the position of and moves across the head at that position, basically only a sensor that detects the position of a predetermined part of the fish, and does not require an image recognition device. To do.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fish dismantling device for automating the work of cutting off fish heads and removing built-in fish which is carried out in the early stages of the manufacturing process of canned foods such as tuna and skipjack.

[0002]

[Prior Art]

 Traditionally, the work of cutting off the heads of tuna and bonito fish and removing the internal organs has been done manually. And since these fish are large and heavy, workers are forced to perform harsh and dangerous work. The present invention aims to provide a device for automating such dismantling work.

[0003]

[Problems to be solved by the invention]

 The size of fish used as a raw material for canning always varies. Therefore, it is inconvenient to process them uniformly from the standpoint of product yield, and for automation, it is necessary to use an image recognition device to recognize the size of the fish body and perform processing according to this. Was generally thought to be. However, the system including the image recognition device is expensive and has a drawback that handling is complicated.

[0004]

[Means for Solving the Problems]

 The present invention relates to a fish dismantling apparatus for disassembling fish based on head length with good retention, a processing table on which a fish body positioned by a head and a tail pedestal is placed, and the processing based on fish species and the like. A belly-cutting cutter that operates along a preset reference line with respect to the table, a means for measuring the head length of the fish on the processing table, and a position approximately 1/2 of the head length according to the output of the measuring means. It consists of a head-cutting cutter that moves and operates across the head at that location, and is basically a sensor that detects the position of a predetermined part of the fish, and does not require an image recognition device.

[0005]

Embodiment In the illustrated embodiment, reference numeral 1 is a processing table on which a fish body positioned by the anterior maxilla and caudal pedicle is placed. The treatment table is inclined as a whole so that one end in the longitudinal direction is on the upstream side and the other end is on the downstream side, and the cross-sectional shape is a substantially U-shaped water channel. A groove Xo is provided obliquely along a reference line, which will be described later, in the central portion of the processing table so that the blade of the cutter does not hit the processing table. Downstream of the processing table, a head-supporting metal fitting 11 for catching the head of the fish based on the maxillary front bone is used as a standard for positioning, and a tail-supporting metal fitting 12 for catching the tail of the fish is installed on the upstream side of the river. ing. The head receiving fitting is composed of two piece members 11a and 11b which are erected on both sides of the pillow member 11c, and each piece member has a substantially truncated cone shape in which the upper bottom is larger than the lower bottom, Each has an eccentric rotation center axis. Both of the piece members are independently rotatable around the respective rotation center axes in the direction in which the distance between them is narrowed, and one piece member 11a precedes the other piece member 11b. It is pivotally driven from the rest position to project a predetermined amount above the pillow member, and then the other piece member 11b is also pivotally driven above the pillow member to tension the remaining amount necessary to sandwich the fish head. put out. The tail pedestal metal fitting 12 is composed of two locking pieces 12a and 12b that are erected on a carriage 12c that is installed in a guide rail 12d and travels on the processing table in the longitudinal direction. The stopper has a columnar shape with a substantially semicircular cross section, and each has a eccentric rotation center axis. The rotation center axes are urged by a belt means (not shown) via a gear mechanism so as to rotate in synchronization with each other around the rotation center axes in a direction in which the spaces between them are narrowed, and A large number of ridges are provided on the opposite curved surface parts of the piece to increase the frictional resistance with the tail part of the fish. By the way, the shape of the fish body is almost similar depending on the fish species.In particular, if a half-line that passes through the anterior maxillary bone to the anus is set as the reference line, those reference lines are almost the same for the same fish species regardless of size. To do. The present embodiment is configured to utilize such knowledge in the removal of the built-in body, that is, in the laparotomy work. That is, a guide base 2b for an electric cutter 2 for belly cutting is provided on the side of the processing base 1, and the belly cutting cutter 2 has two upper and lower rotary shafts projecting from the main body 2a toward the processing base. 2c and 2d, the two rotary shafts are slightly deviated from each other in the front and rear direction, and corresponding circular saws 2e and 2f are fixed to their tips. The guide table guides the cutter body so that the pair of upper and lower circular saws move along a reference line preset on the processing table based on fish species information. 3 is a gill hole sensor provided adjacent to the circular saw at the tip of the two rotary shafts, and is supported by them via bearings so as to be independent of the rotation of each rotary shaft. There is. An arithmetic processing unit (not shown) calculates the value of the head length of the fish based on the value of the position of the gill hole on the processing table detected by the sensor. The gill hole sensor has a large-diameter traveling roller 3c axially mounted on the tip of a supporting rod 3b which is urged downward by a torsion coil spring (not shown), and extends outside the outer diameter of the traveling roller. It is composed of four small-diameter detection rollers 3d that can rotate freely, and a switching means (not shown) that detects a rotational displacement of the detection roller at a revolution angle of 90 degrees in a predetermined traveling area and outputs a detection signal. Furthermore, an electric cutter 4 for head cutting, which is another cutter, is provided above the processing table 1 and the appropriate head cutting position is set by the arithmetic processing device. Is pointed to and the head cut is performed at that position. The body 4a of the cutter for head cutting is provided with two parallel mounting plans extending in the longitudinal direction above the processing table downstream of the processing table. The main body 4a is rotatable and slidable with respect to inner shafts 4b and 4c. In order to construct a four-bar rotary chain mechanism in which two pairs of hanging rods 4d and 4e, which are freely and axially attached in parallel and have the same length, are used as a master and a follower, and the cutter main body is a connecting rod thereof. It is hung at. A circular saw 4f is provided at the tip of the cutter body, and the circular saw is operated at about 1/2 of the measured head length, preferably 14/30 to 20/30 from the maxillary front bone position. According to the output of the processing device, it can be moved in parallel in the longitudinal direction of the processing table by being driven by a driving screw shaft 4g provided in parallel with the two mounting guide shafts. The cutter body is driven by a driving device (not shown) at the position where the cutter body has moved in parallel to swing forward in a direction traversing the processing table, and at that time, the circular saw 4f operates (rotates). It should be noted that the present invention is not limited to the above-described embodiment, and for example, each circular saw is replaced with a water jet type cutter, or body length and weight are measured using a measuring means separately provided on the processing table, It is also possible to use the result of the above as not only the determination of the head cutting position but also the fish species fish body information when determining the abdominal cutting position, and to select one appropriate one from the plurality of reference lines. Further, the gill hole sensor is not limited to the contact type, but can be replaced with a non-contact type such as an optical type.

[0006]

[Action]

 In the illustrated embodiment, the dismantling process is performed as follows. That is, with the locking pieces 12a and 12b, with the head down and the abdomen in the foreground, the wire stalk (not shown) connected to the cart 12c is driven to catch the tail sill 12 of the fish. When the fish is moved in the downstream direction, the fish move on the treatment table 1 from the upstream side to the downstream side. Then, the tip of the head of the fish body is detected by a sensor (not shown) provided on the pillow member 11c at a position where the head protrudes from the processing table 1 by a predetermined amount, and thereby the wire driving device is stopped. At the same time, one of the piece members 11a is rotated clockwise by a predetermined amount about the eccentric rotation center axis, and the fish head is positioned at the substantially maxillary front bone position. After that, the other piece member 11b rotates counterclockwise to catch the head between the piece members 11a and 11b. At that time, the head is pressed against the pillow member 11c by the action of the frustoconical piece member to open the gill hole of the fish. Next, the circular saws 2e, 2f for belly cutting are operated (rotated) from the anus side to the central region of the head along the reference line selected based on the fish type information given in advance from the anus side to the maxillary front bone. Move forward and make a notch to remove the belly part. At that time, together with the circular saw, the gill hole sensor 3 also runs on the body side of the fish body from the anus side to the maxillary front bone side to detect the position of the gill hole, and based on this, an arithmetic processing unit (not shown) Calculate the head length of the fish and then indicate the appropriate cutting position. According to the instruction of the arithmetic processing unit, the head cutting cutter 4 is driven by the drive screw shaft 4g to move in parallel in the longitudinal direction of the processing table, and the head cutting circular saw 4f operates (rotates) at that position. While swinging forward in a direction traversing the processing table, the fish head is cut, and at the same time, the built-in portion connected at the central portion of the head is cut off. After that, the wire driving device is reversely driven to return the tail pedestal metal fitting 12 to the initial position, and the fish body is taken out to the upstream side of the processing table. On the other hand, the head and the built-in part remaining on the processing table fall to the downstream side of the processing table under its own weight.

[0007]

[Effect of the device]

 Since the present invention is configured as described above, it is possible to inexpensively provide a device for determining the size of a fish by measuring the head length using a sensor and automating the dismantling work with good yield. You can

[Brief description of drawings]

FIG. 1 is a simplified view of an essential part of an embodiment of the fish-disassembling apparatus according to the present invention (the inclined surface is shown as a plane).
It is a schematic plan view represented by.

2 is a similarly simplified schematic cross-sectional side view of the embodiment of FIG.

FIG. 3 is an enlarged plan view of a tail handle receiving member.

FIG. 4 is an enlarged side view corresponding to FIG.

FIG. 5 is an enlarged side sectional view of a gill hole sensor.

[Explanation of symbols]

 1 Processing table 2e, 2f Circular saw for belly cutting 3 Gill hole sensor 4f Circular saw for head cutting

Claims (1)

[Scope of utility model registration request] 1. A processing table 1 on which a fish body positioned by a head and a tail is placed, and a belly cutting cutter that operates along a reference line preset for the processing table based on the fish species and other factors. 2, means 3 for measuring the head length of the fish on the processing table, and a head-cutting cutter that moves to a position of about 1/2 of the head length according to the output of the measuring means and operates across the head at that position. A fish dismantling device consisting of 4.