JPH09224559A - Opening device for bivalve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a successive and speedy shellfish opening process by eliminating the time loss of the forward/backward driving of a shellfish stripping blade. SOLUTION: This device is equipped with an endless conveying means where a shellfish base 30 is fixed, a cutter, and a roller guide 20 which is arranged along the conveying means. The roller guide 20 is equipped with a serpentine part 21 which curves outward on the downstream side of the cutter, and a freely expansible rod 32 which can move forth and back almost at right angles to a general conveyance path is fixed below the shellfish base. The rear end part of a rod 33 is guided by the roller guide 20 and the shellfish stripping blade 35 which faces to behind the rod 33 is fitted to the tip part of the rod 33. At the rear end part of the rod 33, a coil spring 37 is fitted and has the shortest length when the shellfish base 30 is on the general conveyance path to position the rod 33 at the foremost place. When the shellfish base 30 is positioned at the serpentine part, the rod 33 is energized forward associatively with the zigzagging of the roller guide 20 to allow it to move back, thereby inserting the shellfish stripping blade into a shellfish opening part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing apparatus for opening bivalves such as scallops, and more particularly to a mechanical structure for improving processing speed.

[0002]

2. Description of the Related Art The processing of bivalves (typically represented by scallops in the following description) requires the operation of opening the shells and taking out the shells, but mechanization is required to increase the processing speed. For example, a device as shown in FIG. 6 has been proposed (Japanese Patent No. 1588089).

This consists of placing a scallop 2 on a base 1,
Cut off the tip (the side opposite to the hinge) with a cutter, install a shell stripping blade 4 that moves forward and backward by the air piston 3, move this shell stripping blade 4 forward, and place it in the shell opening on the base 1. It is one that plugs in and continuously treats scallops.

[0004]

This proposed apparatus automates the manual shelling process and enables continuous processing, but the problem is that the processing speed is extremely slow. .

This is because the air piston 3 is adopted as a means for inserting the shell peeling blade 4 into the opening cut by the cutter, and the shell peeling blade 4 is driven by the forward and backward movement of the air piston 3. The air piston is suitable for processing equipment such as seafood because it has water resistance and few failures due to salt content, but the response of stop / start switching is poor (slow) and the processing capacity per unit time is naturally high. There is a limit.

In the process of inserting the shell-peeling blade (4) into the opening cut by the cutter and peeling the shellfish, the shell-peeling blade (4) advances, whereupon the blade stops and then moves backward. There is a loss in the time to do it, that is, the time from the stop to the restart. The operation loss of the air piston also slows down the transfer speed of the base (1), and even though it is an automatic device, the process proceeds only slowly as a whole.

Therefore, an object of the present invention is to eliminate the time loss in driving the shell peeling blade back and forth and to enable continuous and speedy shell opening processing.

[0008]

In order to achieve the above object and to achieve the above object, the bivalve shell opening device according to the present invention is an endless transfer means having a plurality of shell rests fixed thereto, and an appropriate transfer means. The cutter means is disposed at a position, and a roller guide arranged along the transfer means, and this roller guide has a meandering portion that bends outwards downstream of the cutter means, and is provided at a position below the shell rest table. Is an expandable rod that can move back and forth in a direction substantially perpendicular to the general transfer path, and guides the rear end of the rod by the roller guide. A shell stripping blade is attached, and a coil spring is attached to the rear end position of the rod. This coil spring has the shortest length when the shell mounting table is on the general transfer path, and positions the rod to the frontmost position. On the other hand, when the shell placing table is located in the meandering portion, the rod retracting in conjunction with the meandering of the roller guide is biased forward while allowing the retracting, and the shell peeling blade is inserted into the shell opening. .

[0009]

The device of the present invention drives rods and blades arranged on each base (shell mounting table) by the guide of the roller guide and the urging force of the coil spring, without using an air piston having poor responsiveness to the forward and backward movement of the blade. However, as long as the rod expands and contracts according to the roller guide, the blade moves forward and backward without time loss, and the shellfish is taken out in synchronization with it. Since no electrical system is used around the processing mechanism, the probability of failure due to seawater salt content can be secured to the same level or higher than that of the air piston.

In this apparatus, a rod having a fixed shell peeling blade is moved forward and backward, so that a curved meandering portion is provided in the transfer path, and when the shell placing table approaches the meandering portion, the rod retracts and the blade tip is pulled back backward. It is designed to be inserted into the opening of a shellfish.

A coil spring is attached to the rod, and the coil spring is normally in the shortest state to position the rod forward (pull the blade away from the shell). On the other hand, when the shell placing table approaches the curved meandering portion and the rod is pulled backward, the coil spring is also extended in conjunction with the rod, and the blade is retracted while urging the rod to separate the shell. When the shell rest passes through the curved meandering portion and returns to the general transfer path, the coil spring returns the rod to the original position (the most front position) and returns to the shell replacement processing position.

[0012]

[Embodiment] This device is characterized by a telescopic method of a rod fixed to a shell rest. Since the rod is driven to expand and contract by being guided by the roller guide, the positional relationship between the transfer means and the roller guide will be described first.

FIG. 2 shows a chain belt 1 as a transfer means.
0 illustrates the positional relationship between 0 and the roller guide 20. The chain belt 10 is driven by the sprocket wheels 11 and 12 on both ends. The sprocket wheel 12 (11) is rotationally driven by a motor 14 via a drive chain 13 as shown in FIG. 3, for example.

On the chain belt 10, a plurality of shell mounting bases 30 are arranged at appropriate intervals. On the other hand, reference numeral 15 is a rotary cutter, which is arranged at an appropriate position on the chain belt 10 and cuts out the bivalves placed on the shell placing table to form an opening.

Further, roller guides 20 are arranged substantially parallel to the side portions of the chain belt 10. This guide roller 20
Is a curved meandering portion 21 at a position downstream of the rotary cutter 15.
Is provided.

Next, referring to FIG. 1, the structure of the member (shell shelling blade, etc.) fixed to the shell placing table 30 will be described.

The shell rest 30 is provided horizontally on the upper end of the base 31 standing up from the chain belt 10.
A cylinder 32 is fixed to the cylinder 1, and a rod 33 having a predetermined length is inserted into the cylinder 32 so as to be movable back and forth. The cylinder 32 and the rod 33 are arranged on each shell mounting table 30.

On the other hand, a shell peeling blade 35 is fixed to the tip of each rod 33 provided on each shell placing table 30 via a mounting member 34. The shell peeling blade 35 is arranged so as to face the rear end direction of the rod 33 (cylinder 32 direction).

At the rear end of the rod 33, a roller member 36 which is loosely fitted and guided by the roller guide 20 is arranged.

On the rear side of the cylinder 32, a coil spring 37 for urging the rod 33 is arranged. Reference numerals 38 and 3
Reference numeral 9 denotes a mounting member for the coil spring 37. The front mounting member 38 is fixed to the base 31, and the rear mounting member 39 is fixed to the rod 33. As a result, the coil spring 37 has the shortest length in a normal state and continues to urge the rod 33 to the frontmost position. Here, the normal state means a state in which the base 30 (roller member 36) is on a general conveyance path other than the curved meandering portion 21 of the roller guide.

On the other hand, when the base 30 (roller member 36) reaches the curved meandering portion 21 of the roller guide, as shown in FIG. 4, the coil spring 37 is pulled by the rod 33 and extends, so that the rod 33 is retracted. Tolerate. As a result, the shell peeling blade 35 moves backward and is inserted into the opening of the shell S on the shell mounting table 30 to peel off the shellfish.

As a matter of course, when the base 30 returns to the general conveying path again, the shell-peeling blade 35 also returns to the foremost position, and waits at the basic position for the subsequent processing.

When the shell placing table 30 reaches the terminal in the traveling direction, that is, the sprocket wheel 12, the shell placing table 30 is inverted downward so that the shell S that has been processed is dropped at that position. Therefore, for example, by disposing the belt conveyor B (FIG. 3) at this dropping position, the shellfish separated from the shell can be appropriately processed at a free place.

By the way, when the shell peeling blade 35 is inserted into the opening of the shell S, the shell S cannot be reliably peeled unless the shell S is supported and fixed so as not to move. This is because the shell moves when the blade enters. Further, when the peripheral edge of the shellfish S is cut off by the rotary cutter 15, the shellfish S must be fixed similarly.

Therefore, in order to apply a tension from above to the shell S to fix its position (to prevent it from moving), for example, as shown in FIG. Distribute. The pressing means P is composed of a flat belt 42 that is transferred and driven by the rotation of the belt pulleys 40 and 41, and a plurality of pressing rollers 43 arranged in the space of the flat belt 42. In addition, each pressing roller 4
3 is provided with a spring (not shown) for urging each roller downward so that a constant tension is always applied to the shell S. In FIG. 3, the number of the pressing rollers 43 is omitted for simplicity of the drawing, but in reality, the pressing rollers 43 are also arranged at the front and rear positions of the rotary cutter 15 to regulate the movement of the shell S. Reference numeral 46 is a motor for driving the rotary cutter 15, and 47 is a V belt.

According to such an apparatus, each shell placing table 30 is transferred by the chain belt 10, and while the pressing means P holds down the shell S on the shell placing table from above, the peripheral edge is cut off by the rotary cutter 15. Next, when the shell placing table 30 approaches the curved meandering portion 21 of the roller guide 20, the rod 33 retracts as the movement position of the roller member 36 changes, and at the same time, the shell peeling blade 35 projects into the opening of the shell S and shell Instantly peels off. Since the shell table 30 is only moving according to the transfer speed of the chain belt 10,
The movement speed of the shell peeling blade 35 at this time also depends on the speed of the chain belt 10.

That is, the time required for the roller member 36 to pass through the curved meandering portion 21 and return to the general transfer path, this short time determines the advancing / retreating speed (processing speed) of the shell peeling blade 35.
This timing is 1 second or less on average for each shell 30. Since it took 2-3 seconds with the conventional air piston,
Processing speed is dramatically increased.

The shell opening device according to the present invention is not limited to the embodiment described above. For example, the transfer means for driving the shell placing table endlessly is not limited to the so-called caterpillar type driving method, but may be a so-called rotary sushi type driving method for endlessly driving a two-dimensional plane. Space is wasted, but processing speed is the same.

In the case of adopting the so-called caterpillar system as in the above embodiment, two devices are arranged adjacent to each other as shown in FIG. By advancing, it is possible to prevent work-related accidents and reduction in efficiency.

The cutting position of the shellfish by the rotary cutter 15 is
It is desirable to make it on the side of the shellfish (the side position of the hinge). This is because the shellfish is the easiest to peel off.

Further, in the drawings of the above-mentioned embodiment, the shell peeling blade 35
However, the shell peeling blade 35 may be moved forward and backward at an oblique angle from the upper side to the lower side. No matter what the angle
This is because the blade reciprocating speed and processing efficiency are the same.

Further, in FIG. 4, the cylinder 32 and the rod 33 are arranged on both the left and right sides so as to minimize the blur when the shell-peeling blade 35 is moved at a high speed.
When the advance / retreat timing of 5 exceeds 1 second, there is almost no blurring, so only one cylinder and one rod are sufficient.

[0033]

As described above, according to the shell-opening device of the present invention, there is no time loss for driving the shell-peeling blade back and forth,
It enables continuous and speedy processing.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a configuration of a shell-peeling blade according to the present invention.

FIG. 2 is a diagram illustrating a configuration of a roller guide according to the present invention.

FIG. 3 is a diagram illustrating a driving method of a shell-mounting table according to the present invention.

FIG. 4 is a diagram illustrating a movement relationship between a roller guide meandering portion and a rod according to the present invention.

FIG. 5 is a diagram illustrating an example of efficient arrangement of the device of the present invention.

FIG. 6 is a view showing a conventional shell opening device.

[Explanation of symbols]

 10 chain belt 11, 12 sprocket wheel 13 drive chain 14 motor 15 rotary cutter 20 roller guide 21 curved meandering part 30 shell plate 31 base 32 cylinder 33 rod 35 shell peeling blade 36 roller member 37 coil spring 38, 39 mounting member 40, 41 belt Pulley 42 Flat belt 43 Pressing roller S Shell

Claims (1)

[Claims] 1. An endless transfer means having a plurality of shell mounting bases fixed thereto, a cutter means arranged at an appropriate position of the transfer means, and a roller guide arranged along the transfer means, the roller guide comprising: It is provided with a meandering portion that curves outwards downstream of the cutter means, and at the lower position of the shell placing table, a retractable rod that can move back and forth in a direction substantially perpendicular to the general transfer path is fixed, and The end portion is guided by the roller guide, and a shell-peeling blade that faces the rear of the rod is attached to the tip portion of the rod, and a coil spring is attached to the rear end position of the rod. When it is on the general transfer route, it becomes the shortest length to position the rod to the frontmost position, while when the shell placing table is located on the meandering part, it moves backward in conjunction with the meandering of the roller guide. A bivalve shell opening device characterized by allowing the rod to retract while allowing the rod to be urged forward and inserting a shell stripping blade into the shell opening.