Fish bone removal device

Abstract

To provide a fish bone removal device capable of removing bones efficiently and surely.SOLUTION: A fish bone removal device 1 includes bone removal means 12 including a pair of discs 10a, 10b rotating in the state where a V-shape is formed, after forming the V-shape by allowing mutual circumferential end parts to abut or approach at each bottom edge.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a fish bone removing device.

Background Art

[0002] Conventionally, the work of removing bones from fish fillets and the like has been to remove the bones one by one by hand using forceps-type (hair-removing type) or pliers-type bone-removing tools. This places a heavy burden on the operator and takes a huge amount of time and effort. Therefore, a fish bone removing device that reduces the burden on the operator and can efficiently remove bones is desired, and various proposals have been made regarding such a fish bone removing device.

[0003] For example, there has been proposed a fish bone removing device having a belt conveyor for conveying fish fillets and a pin bone removing means for removing the pin bones of the fillets. The device includes a belt guiding member that is disposed in contact with the back surface of the belt of the belt conveyor and guides and supports the belt that is deformed into a mountain shape by pushing it upward toward the pin bone removing means below the pin bone removing means, and a pin bone removing means support mechanism that supports the pin bone removing means and presses it against the surface of the fillet placed on the belt conveyor (see Patent Document 1).

[0004] However, the fish bone removing device described in Patent Document 1 has problems such as small bones breaking and remaining.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The present invention has been made in view of such circumstances, and an object of the present invention is to provide a fish bone removal device that can efficiently and reliably remove bones.

Means for Solving the Problems

[0007] As a result of intensive research to solve the above problems, the present inventor has found that by forming a V-shape by abutting or approaching the circumferential ends of a pair of disks at the lower end and rotating the pair of disks in this V-shaped state to remove bones at the V-shaped part at the lower end, fish bones can be removed efficiently and reliably, and the present invention has been completed.

[0008] That is, the present invention is as follows. [1] A fish bone removal device characterized by comprising bone removal means having a pair of disks whose circumferential ends abut or approach each other at the lower end to form a V-shape and rotating in the state where the V-shape is formed. [2] The fish bone removal device according to [1] above, characterized in that the pair of disks of the bone removal means rotate continuously. [3] The fish bone removal device according to [1] or [2] above, characterized in that inclined surfaces are respectively formed at the circumferential ends of the opposing surfaces of the pair of disks of the bone removal means, and vertical portions that abut or approach each other are formed at the lower end where the pair of disks abut or approach each other. [4] The fish bone removal device according to [3] above, characterized in that the length of the vertical portion is 5 mm or more. [5] The fish bone removal device according to any one of [1] to [4] above, characterized in that the diameter of the disks of the bone removal means is 40 to 140 mm.

[0009] [6] The fish bone removal device according to any one of [1] to [5] above, characterized in that the arrangement angle forming the V-shape of the pair of disks of the bone removal means is 15° to 30°. [7] The fish bone removal device according to any one of [1] to [6] above, characterized in that the bone removal means is provided below the pair of disks and includes a fish pressing plate in which a groove or an opening in which the circumferential ends of the pair of disks protrude is formed. [8] Further, a bone removal means support base that supports the bone removal means in a suspended state, a fish placement table provided below the bone removal means for placing fish, The fish bone removal device according to any one of the above [1] to [7], characterized by comprising the above. [9] The fish bone removal device according to the above [8], characterized in that the fish placement table is a movable type that can move in the horizontal direction.

[10] The fish bone removal device according to the above [9], characterized in that the fish placement table includes a plurality of ball casters and a fish placement plate.

Effect of the Invention

[0010] The fish bone removal device of the present invention can efficiently and reliably remove the bones of fish.

Brief Description of the Drawings

[0011]

Figure 1

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Figure 8

Best Mode for Carrying Out the Invention

[0012] The fish bone removing device of the present invention is characterized by comprising bone removing means having a pair of disks whose circumferential ends abut or are close to each other at the lower end to form a V shape and rotate in the V-shaped state.

[0013] The fish bone removing device of the present invention is suitable for removing small bones (pin bones) present in fish fillets. Examples of fish to which the bone removing device of the present invention can be applied include horse mackerel, mackerel, sardine, salmon, etc.

[0014] In the fish bone removing device of the present invention, the circumferential ends of the pair of disks abut or are close to each other at the lower end to form a V shape, and the pair of disks rotate in the V-shaped state. Thus, at the V-shaped part at the lower end, the fish bones can be surely caught and removed. Further, since the fish bones are removed by the rotation of the disks, the burden on the operator is small, and the bone removal can be performed easily and efficiently. Furthermore, when the pair of disks rotate continuously, the work can be carried out continuously, and a large amount of fish can be processed efficiently.

[0015] First, the bone removing means in the fish bone removing device of the present invention will be described. The bone removing means of the present invention comprises a pair (two) of disks that rotate in an erected state, and in such a pair of disks, the circumferential ends of each other abut or are close to each other at the lower end and are formed in a V shape when viewed from the circumferential end side. That is, in the pair of disks, the distance between the circumferential ends of each other is the shortest at the lower end where the circumferential ends of each other abut or are close to each other, and with the point where the distance between the circumferential ends of each other is the shortest as a base point, the distance between the circumferential ends of each other increases as it moves away from the base point in the circumferential direction, and the distance between the circumferential ends of each other is the longest at the position 180° from the base point. In the present invention, the circumferential ends of each other being close means being arranged at an interval shorter than at least the width of the bone to be removed.

[0016] It is preferable that inclined surfaces are provided at the circumferential ends of the opposing surfaces of the pair of disks. Thereby, at the V-shaped lower ends where the pair of disks abut or approach each other, vertical portions that abut or approach each other can be formed (see Fig. 5). Specifically, in the mode where the circumferential ends of each other abut, a vertical abutting portion (vertical abutting line) is formed, and in the mode where the circumferential ends of each other approach, a vertical approaching portion (vertical approaching parallel line) where the circumferential ends of each other approach in parallel with a predetermined interval therebetween is formed. Thereby, when bringing the pair of rotating disks into contact with the bone, the bone can be grasped by a line instead of a point, and it can be surely removed without breaking the bone.

[0017] As the length of the vertical abutting portion or the vertical approaching portion (the length of the inclined surface), 3 mm or more is preferable, 4 mm or more is more preferable, and 5 mm or more is even more preferable. By the length of the vertical abutting portion or the vertical approaching portion being equal to or greater than a predetermined length, the impact when the disk hits the bone and the load applied when removing the bone can be reduced, and it can be surely removed without breaking the bone. Further, although it depends on the type of fish to be processed and the thickness of the sliced fish, the upper limit side length of the inclined surface is preferably 15 mm or less, and more preferably 10 mm or less. By being within the range of this upper limit side length, it is possible to prevent removing more fish body than necessary together with the bone.

[0018] The diameter of the disk is not particularly limited. For example, 20 to 300 mm is preferable, 30 to 200 mm is more preferable, and 40 to 140 mm is even more preferable. Further, in the case of a tabletop type where the fish bone removing device of the present invention does not need to consider the installation space, a relatively large one with a diameter of about 100 to 200 mm is preferable, and in the case of a gripping type, a relatively small one with a diameter of about 40 to 100 mm is preferable so as to be lighter.

[0019] The arrangement angle (V-angle) forming a V-shape of the pair of disks is not particularly limited. For example, 10° to 45° is preferable, 12° to 35° is more preferable, and 15° to 30° is even more preferable. When the arrangement angle of the pair of disks is within this range, the desired length of the vertical contact portion or the vertical proximity portion can be ensured, and the position of the fish bone can be easily confirmed between the upper disks. In consideration of the arrangement angle of the pair of disks, by setting the inclination angle of the inclined surface of the circumferential end portion of the disk, a vertical portion is formed at the V-shaped portion at the lower end.

[0020] The pair of disks maintains a V-shape and each rotates in the same direction, preferably at the same rotational speed. Specifically, for example, there can be mentioned a mode in which the pair of disks rotate by their respective powers, a mode in which the disks are fixed to each other, and the other disk rotates in conjunction with the power acting on one of the disks.

[0021] The rotational speed of the pair of disks is not particularly limited as long as the speed can remove the bones. 50 to 250 rpm is preferable, 80 to 200 rpm is more preferable, and 120 to 180 rpm is even more preferable. Note that the pair of disks may rotate intermittently when the power is ON, but it is preferably rotating continuously.

[0022] The rotational direction of the pair of disks can remove the bones in any rotational direction. However, at the portion where the disk and the fish come into contact (the lower end), the direction of rotational movement in the same direction as the moving direction of the fish (relative to the disk) is preferable. Thereby, the bones can be removed while smoothly advancing the fish. Specifically, when the fish is introduced from the front side of the bone removal means to the bone removal means and discharged to the far side of the bone removal means, the direction of rotating downward on the front side of the disk is preferable.

[0023] By this rotation, bones can be removed at the V-shaped end having the vertical portions of the pair of disks. At this time, since the flesh around the bones is continuously removed linearly, the small bones existing on the straight line can be surely removed. Note that the amount of flesh removed is extremely small, and the yield will not decrease.

[0024] The fish bone removing device of the present invention preferably includes a fish pressing plate provided below the pair of disks. The fish pressing plate is formed with a groove or an opening for protruding the circumferential ends of the pair of disks. The protruding amount of the circumferential ends (V-shaped portions) of the pair of disks depends on the type of fish to be processed and the thickness of the fillet, but is preferably about 2 to 10 mm, more preferably about 3 to 8 mm, below the fish pressing plate. Note that it is preferable that at least the fish-introducing side end of the fish pressing plate is provided with a curved return portion that curves upward so that the fish can be introduced more smoothly.

[0025] By providing the fish pressing plate, the flesh of the fish around the bones can be pressed on its lower surface to suppress large movement of the fish, and it becomes possible to control more easily and accurately so that the V-shaped portion is positioned on the straight line where the bones exist, and the fish bones can be removed more surely.

[0026] The fish bone removing device of the present invention may be a grip type that is gripped and operated by hand, but is preferably an installation type that is installed on a table or a floor surface. Specifically, for example, when the fish bone removing device of the present invention is of the installation type, an aspect can be cited in which it includes a bone removing means support base that supports the bone removing means in a suspended state, and a fish placing table that is provided below the bone removing means and on which the fish is placed (see FIG. 1).

[0027] In the case of the setting type, it is preferable that the bone removing means and / or the fish placing table are movable in the horizontal direction so that the V-shaped part of the bone removing means can be more easily aligned with the part where the fish bone exists. Since it can be manufactured more simply, it is preferable that the fish placing table is movable. Specifically, an embodiment in which the fish placing table includes a plurality of ball casters and a fish placing plate (cutting board) can be cited. Further, when the bone removing means is movable, for example, it can be configured such that a conveyor for conveying fish is provided with a bone detecting means, the position of the bone of the fish being conveyed is detected, and the bone removing means moves in the lateral direction (a direction perpendicular to the conveying direction).

[0028] Next, an example of the usage method (operation) of the fish bone removing device of the present invention will be described. First, the pair of disks of the bone removing means are continuously rotated in the direction of rotating downward on the front side of the disks. In this rotating state, the part where the bone of the fish fillet exists is brought into contact with the V-shaped part at the lower end of the pair of disks of the bone removing means from the front side and gradually moved to the far side. At this time, the bone of the fish fillet is removed together with the surrounding flesh at the V-shaped part of the bone removing means.

[0029] Hereinafter, embodiments of the fish bone removing device of the present invention will be specifically described with reference to the drawings, but the present invention is not limited to these embodiments.

[0030] Here, FIG. 1 is a perspective view of a fish bone removal device according to an embodiment of the present invention. FIG. 2 is a schematic perspective view of the bone removal means of the fish bone removal device shown in FIG. 1. FIG. 3 is a schematic front view of the bone removal means of the fish bone removal device shown in FIG. 1. FIG. 4 is an explanatory view of a pair of disks of the bone removal means shown in FIGS. 2 and 3, where (a) shows a schematic side view and (b) shows a cross-sectional view taken along line A-A. FIG. 5 is a schematic enlarged front view of the vertical contact portion of the pair of disks shown in FIG. 4. FIG. 6 is an explanatory view of the fish placement table of the fish bone removal device shown in FIG. 1, where (a) shows a schematic perspective view of the fish placement table, (b) shows a bottom view of the ball caster of the fish placement table, and (c) shows a side view of the ball caster of the fish placement table. FIG. 7 is a perspective view of a fish bone removal device according to another embodiment of the present invention. FIG. 8 is a photograph of a fillet of horse mackerel with bones removed using the fish bone removal device shown in FIG. 1.

[0031] As shown in FIG. 1, a bone removal device 1 according to an embodiment of the present invention removes the bones 3 from a fillet 2 of fish.

[0032] As shown in FIG. 1, the bone removal device 1 includes a bone removal means 12 having a pair of disks 10a and 10b and a power source 20 for the disks 10a and 10b. The disks 10a and 10b are connected by a connecting member (not shown) such as a universal joint that connects the rotation axes, and the disks 10a and 10b rotate at the same rotational speed in the downward rotational direction on the front side.

[0033] The bone removal device 1 also includes a bone removal means support base 14 that supports the bone removal means 12 in a suspended state, and a fish placement table 16 that is provided below the bone removal means 12 and on which the fish 2 is placed. The bone removal means support base 14 includes a length-variable support rod 18 that enables vertical adjustment of the bone removal means 12.

[0034] As shown in FIGS. 2 and 3, the disks 10a and 10b are configured such that their circumferential end portions 22a and 22b abut against each other at one point and are formed in a V shape when viewed from the front, and are rotatable in a standing state forming the V shape. Further, a fish pressing plate 26 is provided below the disks 10a and 10b, and a groove 24 for protruding the V-shaped portions of the circumferential end portions 22a and 22b of the pair of disks 10a and 10b is formed in the fish pressing plate 26. Return portions 28 are provided at the front-side and rear-side ends of the fish pressing plate 26.

[0035] As shown in FIG. 4(a), the disks 10a and 10b each have an outer diameter (D) of about 114 mm and are provided with inclined surfaces 30 having a width (d) of about 7 mm. By abutting the inclined surfaces 30 against each other, a vertical abutting portion 32 having a length (X) of about 7 mm is formed as shown in FIGS. 4(b) and 5. Further, the arrangement angle (θ) of the disks 10a and 10b is 25°.

[0036] As shown in FIG. 6, the fish placement table 16 is disposed on a table (not shown) and includes a cutting board 36 provided with a plurality of ball casters 34 on its lower surface, and is configured to be movable freely with a fish placed on the cutting board 36.

[0037] Next, a fish bone removing device according to another embodiment of the present invention will be described. Note that members having the same configuration as those of the bone removing device 1 are denoted by the same reference numerals and the description thereof is omitted. In the present embodiment, it is different from the above-described embodiment in that it is configured to be a gripping type.

[0038] As shown in FIG. 7, a bone removing device 4 according to another embodiment includes a bone removing means gripping member 38 that supports the bone removing means 12, and is configured such that the bone removing means gripping member 38 can be gripped by hand to manually remove bones. The disks 40a and 40b of the bone removing device 4 according to the present embodiment are each formed to have an outer diameter (D) of about 60 mm, a width (d) of about 5 mm, and a length (X) of the vertical abutting portion 32 of about 5 mm.

[0039] Using the bone removing device 1 according to an embodiment of the present invention, a bone removing operation was performed. Sliced horse mackerel (thickness: approximately 1.2 cm) with the skin removed was used. The rotational speed of the disk was set to 160 rpm, and the sliced horse mackerel was passed from the near side to the far side to remove the bones. As shown in Fig. 8, the part where the small bones of the sliced horse mackerel existed was smoothly removed linearly, and all the existing small bones could be removed. Note that the flesh part of the horse mackerel was not excessively shaved off.

Industrial Applicability

[0040] Since the bone removal device of the present invention can be used for removing bones from fish, it is industrially useful.

Explanation of Reference Numerals

[0041] 1 Bone removal device (bone removal device according to one embodiment) 2 Sliced fish (fish) 3 Bone 4 Bone removal device (bone removal device according to another embodiment) 10 Disk 12 Bone removal means 14 Support base for bone removal means 16 Fish placement table 18 Support rod 20 Power 22 Circumferential end 24 Groove 26 Fish pressing plate 28 Return part 30 Inclined surface 32 Vertical contact part 34 Ball caster 36 Cutting board 38 Gripping member for bone removal means 40 Disk

Claims

1. Bone removing means comprising a pair of disks whose circumferential ends abut or are close to each other at the lower end to form a V shape and rotate in the state of forming the V shape, wherein the bone removing means is provided below the pair of disks and includes a fish pressing plate formed with a groove or an opening in which the circumferential ends of the pair of disks project. A fish bone removing device characterized by the above.

2. The fish bone removing device according to claim 1, wherein the pair of disks of the bone removing means rotate continuously.

3. The fish bone removing device according to claim 1 or 2, wherein inclined surfaces are respectively formed at the circumferential ends of the opposing surfaces of the pair of disks of the bone removing means, and vertical portions that abut or are close to each other are formed at the lower ends where the pair of disks abut or are close to each other.

4. The fish bone removing device according to claim 3, wherein the length of the vertical portion is 5 mm or more.

5. The fish bone removing device according to any one of claims 1 to 4, wherein the diameter of the disks of the bone removing means is 40 to 140 mm.

6. The fish bone removing device according to any one of claims 1 to 5, wherein the arrangement angle for forming the V shape of the pair of disks of the bone removing means is 15° to 30°.

7. Furthermore, a bone removing means support base for supporting the bone removing means in a suspended state, and a fish placing table provided below the bone removing means for placing a fish. The fish bone removing device according to any one of claims 1 to 6, characterized by comprising the above.

8. The fish bone removing device according to claim 7, wherein the fish placing table is a movable type that can move in the horizontal direction.

9. The fish bone removing device according to claim 8, wherein the fish placing table includes a plurality of ball casters and a fish placing plate.

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