JPH0369680B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cutting device for cutting articles such as fish, and more particularly to a cutting device in which a rotary blade cuts while moving along a closed loop track. It is related to.

[Prior Art] Conventionally, as devices for quickly preparing large quantities of fish fillets, etc., there has been an automatic weighing and cutting device described in Japanese Patent Publication No. 14678/1980, and a uniform weight cutting device described in Japanese Patent Publication No. 57-79832. Fillet cutting device or JP-A 1986-
A fish slicer and the like described in Publication No. 199336 have been proposed. Among these, the first example is mainly characterized by the automatic weighing of the object to be cut, but the device specifically for cutting fish or the like has a structure in which a flat blade cutter is lowered. In the second and third examples, a rotary blade is used as the cutting device, but in both cases, the position of the rotary blade is fixed, and the table on which the object to be cut is placed moves. has been done.

[Problems to be Solved by the Invention] When cutting a large amount of frozen fish into fillets, high-speed cutting is required, and the cut fillets are difficult to assemble in order to arouse the desire of general consumers to purchase them.
Good cutting quality is desired. From this point of view, pressing with a flat blade as in the first example is not a suitable method in terms of the appearance of the cut surface. In addition, in the second and third examples, since a rotating blade is used, a good cut can be obtained, but
The problem is that it is difficult to speed up the processing. This is because in the second and third examples, the table on which the object to be cut is placed makes reciprocating motion, but the inertia due to the table mass and the amount of material to be cut is large, and the direction of movement at both ends cannot be reversed. This is because it is difficult to do it quickly. However, even if the rotary blade, which has a smaller mass than the table, is configured to move back and forth in a straight line, if the direction of movement of the rotary blade is rapidly reversed, an impact load will act on each member and each member will become distorted. Because such adverse effects occur, an acceleration/deceleration period is required at the time of reversal. Therefore, with this configuration as well, it is difficult to speed up cutting, as in the case of the table described above.

The present invention solves the problems of the prior art and realizes a cutting device that can cut objects at high speed and with high quality.

[Means for Solving the Problems] The present invention, which has been made to solve the above problems, rotates a rotary blade provided in the track moving body while moving the track moving body in one direction along a closed loop track. The movable rotary blade cutting device intermittently cuts a workpiece on a processing table, and the shape of the track includes: a cutting section trajectory arranged parallel to the upper surface of the processing table; It consists of an evacuation section track arranged above, and a connecting track that connects both ends of the cutting section track and both ends of the evacuation section track with a curve, respectively, and a rack having a similar shape to the track of the track is attached to the track. The track moving body is provided with: a pinion that meshes with the rack; a transmission section that transmits rotational motion of the pinion to the rotary blade; and a drive mechanism that moves the track moving body along the track. The gist of the present invention is a moving rotary blade cutting device characterized by the following features.

Here, the drive mechanism for the track moving body is realized, for example, by a chain mechanism or the like that is driven along the track. In addition, the shape of the track mentioned above has semicircles at both ends and a parallel straight line connecting them, which means that the cutting distance can be longer when the rotary blade moves along the parallel straight line. And, secondly, the semicircular portions at both ends have two functions: the direction of movement of the track moving body can be changed extremely smoothly.

[Operation] The track moving body moves along the track with the drive mechanism,
When moved by, for example, a chain mechanism, a pinion provided on the track moving body is rotated relative to the track moving body by a crack on the truck side. The rotation of the pinion is transmitted via the transmission section to a rotary blade also provided on the track moving body, causing the rotary blade to rotate. Therefore, whenever the track vehicle is moved along the track, the rotary blade also rotates. Therefore, when the track moving body moves along the cutting section trajectory of the track, the rotary blade rotates and passes near the top surface of the processing table to cut the object on the top surface of the processing table. When the track vehicle moves to the end of the cutting section track, the track vehicle is introduced into the connecting track. As the track moving body moves along the connected track, its moving direction is smoothly changed by the curved portion, and the track moving body is introduced into the end of the retreat section track. Since the rotary blade retracts above the processing table while the track moving body moves in the retraction section trajectory and returns, the workpiece can be fed by the processing table during this return period. When the track moving body moves to the end of the retraction section track, the track moving body is introduced into the connecting track, the moving direction is smoothly changed by the curved portion of the connecting track, and the track moving body is introduced into the cutting section track again.

The above process is smoothly repeated as long as the track moving body moves in one direction, so the moving speed of the track moving body is increased and the object to be cut is cut cleanly and at high speed.

[Example] An example in which the present invention is applied to a cutting device for producing fish fillets will be described below. FIG. 2 is a perspective view schematically showing the entire cutting device. first,
The general configuration of this cutting device will be described below.

This cutting machine is roughly divided into a measuring section 10 and a feeding device 1.
2 and a cutting section 14, which are entirely placed on a table-shaped frame (not shown). The measuring unit 10 is located at one end of the frame, in FIG.
The feeding device 12 includes two chains 16 and 17 which are driven synchronously from one end of the frame toward the metering section 10 to the other end, and these chains 1
6, 17, and consists of a feed rod 18 extending perpendicularly to the direction of movement. The cutting part 14 revolves around a flat back plate 19 which is also placed in the center of the frame at right angles to the direction of movement of the feed rod 18, a track part 20 placed on the back plate 19, and a track part 20 that revolves on the track of the track part 20. Rotating blade 21 and back plate 19 that rotate while
two pillars 22 and 23 that are slidably inserted into both ends of the frame and support the track portion 20 in the space above the frame;
It also consists of two track rotation shafts 24, 25 extending from the lower ends of these supports 22, 23, respectively, at right angles to these supports 22, 23 and also at right angles to the traveling direction of the feed rod 18. These two track rotation axes 27, 25 are naturally on a straight line.

In addition to the above frame, this cutting machine also has a control unit 2.
7 is provided, and this control section 27 controls the cutting section 1 which will be described later.
4 and the motor that performs the feeding operation of the feeding device 12.

Next, the structure of the cutting portion 14, which is a part according to the present invention, will be explained in more detail. FIG. 1 shows the cutting section 14.
FIG. 2 is a perspective view including a partially exploded view, with only a portion taken out. The track portion 20 is placed on the back plate 19, and the track 3 on the loop fixed to the back plate 19 is placed on the back plate 19.
2. A chain 34 and a pair of sprockets 36 forming a loop of the same shape within the track 32;
37, a track moving body 40 comprising a rail 38 and a rack 39 forming a loop of the same shape, and a rotary blade 21 that moves within the track 32 according to the chain 34. Here, track 32
The sprockets 36 and 37 at both ends are semicircular, and the space between them is connected by parallel straight lines.

A more detailed explanation of the structure of the track portion 20 will be given with reference to FIG. 3, which is a sectional view taken along the line C--C in FIG. 1. The truck moving body 40 is
9 and the pinion 4 meshing with the intermediate gear 40a via the intermediate gear 40a.
0b, the rotary blade 2 fixed to this pinion 40b
1. A central shaft 40c attached to this pinion 40b via a bearing, a roller 40d moving on the rail 38 which is also suspended by a bearing behind the pinion 40b of this central shaft 40c, and a roller 40d inside the track 32. It consists of bearings 40e, 40f, etc. that roll on two rails 32a, 32b provided around the entire circumference.
This central shaft 40c is rotatably locked to one location of the chain 34 at the rearmost portion (right side in FIG. 3). In this way, as shown in FIG.
The pinion 40b meshes with the intermediate gear 40a.
mesh together. In addition, as shown in Fig. 1, the intermediate gear 40
The central axis of a is parallel to the central axis 40c,
Two arms extended from c (this kind of arms are not shown because they are self-explanatory; a hook 39, an intermediate gear 40a,
The pinion 40b (the relationship of which is clearly shown) is rotatably supported. Therefore, as described above, the pinion 4 is connected via the rack 39 and the intermediate gear 40a.
0b meshes.

The operation of the above configuration will be explained below.

In the above configuration, when the chain 34 rotates, the central shaft 40c is pulled by the chain 34. As shown in FIG. 3, the bearings 40e and 40f of the central shaft 40c and the roller 40d roll on the rails 32a and 32b of the track 32 and on the rail 38, respectively, so that the chain 34 rotates as described above. When the central shaft 40c is pulled by the chain 34, the central shaft 40c is connected to the intermediate gear 40a.
Move while pulling. As the gear moves, the intermediate gear 40a meshes with the rack 39 and rotates, transmitting the rotation to the pinion 40b. Therefore, the rotary blade 21 rotates while moving along the track 32.

Note that the "rack" in the claims corresponds to the above-mentioned rack 39, and refers to "a pinion that meshes with the rack".
corresponds to the intermediate gear 40a, and "a transmission section that transmits the rotational motion of the pinion to the rotary blade" corresponds to the pinion 40b.

Note that the track portion 20 has both support columns 2 above it.
2 and 23, and can be moved vertically by a screw 31 inserted into a screw hole in the upper part of the track section 20. This is to adjust the height of the cutting edge when the diameter of the rotary blade 21 changes due to wear or the like.

Returning to FIG. 1, the locus of the blade surface when the rotary blade 21 moves along the lower straight portion of the track 32 is as follows:
It passes through the track rotation axis center line B--B, which will be described later, and protrudes slightly from it. In addition, the object to be cut 26
The surface on which the is placed and moved includes the track rotation axis centerline B--B.

Two pillars 22 and 23 fixed to the back plate 19 pass through both ends of the track portion 20, and L-shaped arms 42 and 43 are fixed to the lower ends thereof, respectively. Each column 22, 2 of each L-shaped arm 42, 43
Both supports 22 and 23 are attached to the arms separate from the attachment part 3.
The track rotation axis 2 is directed outward at right angles to the direction of movement of the workpiece 26 (arrow A).
4 and 25 (25 is hidden by the L-shaped arm 43 in FIG. 1) are extended. The track rotation axes 24, 25 are arranged on a straight line B--B. Each truck rotating shaft 24, 25 has a gear 4.
4, 45 are fixed, and those gears 44, 45
is the center line B- of the track rotating shafts 24, 25.
The gears 4 at both ends of the connecting shaft 46 extend parallel to B and below the plane of movement of the object to be cut 26 (not shown).
8 and 49, respectively. Further, rotational power is applied to one of the connecting shaft gears 48 (on the near side in FIG. 1) by a motor 50 and a gear 52.

In addition, in FIG. 1, the truck rotating shaft 24 on the near side is hollow, and the motor 60 and gear 6
2, 64 and a shaft 66 passing through its hollow portion, rotary power is transmitted to a bevel gear 68 provided inside the L-shaped arm 42. This rotational power is turned at right angles by a pair of bevel gears 68, 70, passes through the L-shaped arm 42, and then passes through the pulley 72, the belt 74, and an intermediate pulley and belt (not shown) to the track portion 20. The sprocket 36 is used to rotate one of the sprockets 36. In this intermediate pulley (not shown), a mechanism is adopted in which a straight line connecting the center of the intermediate pulley and the center of the sprocket 36 can swing with respect to a straight line connecting the center of the pulley 72 and the center of the intermediate pulley. This makes it possible to absorb the vertical movement of the track portion 20 for adjusting the height of the cutting edge of the rotary blade 21 described above.

Incidentally, the power transmission between the motor 50 and the connecting shaft 46 and between the motor 60 and the shaft 66 may be performed by a belt or a chain, etc., instead of the gear mechanism as shown in FIG. 1.

The cutting device of this embodiment is configured as described above and operates as follows. Note that all of the following operations are executed based on commands from the control section 27 described above. First, the explanation will proceed with reference to FIG.
In the initial state, the feed rod 18 is stopped at the starting end (left end in FIG. 2) of the frame. Here, the object to be cut 26, for example, frozen fish, is placed on the weighing section 10, and after its weight is measured, it is pushed toward the cutting section 14 by the feed rod 18. When one end of the object to be cut 26 reaches the cutting part 14, the feed rod 18 is stopped, and thereafter the feed rod 18 is moved intermittently at predetermined intervals based on the initially measured weight and predetermined data and procedures. The object to be cut 26 is pushed forward.

Next, the explanation of the operation will be continued with reference to FIG. As mentioned above, the object to be cut 26 is intermittently moved in the direction of arrow A at predetermined intervals.
The circular movement on the track 32 is performed continuously in synchronization with the intermittent movement of 6. That is, the motor 60 is driven to rotate, and its rotational power is transmitted to the right sprocket 36 by the shaft 66, bevel gears 68, 70, pulley 72, belt 74, intermediate pulley and belt (not shown) as described above. This sprocket 36
The chain 34, which is stretched over the other sprocket 37, is thereby driven within the track 32 in a predetermined direction (counterclockwise in FIG. 1), and the track rotatably locked at one point on the chain 34 A moving body 40 also orbits within the track 32.

As mentioned above, during this circular movement of the track moving body 40, the pinion 40b of the track moving body 40 is rotationally driven by the rack 39 via the intermediate gear 40a, so that the rotary blade 21 fixed to the pinion 40b rotates ( rotation). Therefore, when the track moving body 40 moves under the track 32, the rotary blade 21 cuts the object 26. At this time, bearings 40e and 40f are
2 rails 32a, 32b, and the roller 4
By rolling the blade 0d on the rail 38, the rotating blade 21 is prevented from wobbling, ensuring the accuracy of the cutting position, and improving the quality of the cut of the object 26.

When the track moving body 40 moves along the lower straight line of the track 32, the intermittent movement of the workpiece 26 is synchronously adjusted to correspond to the stop period, and the track moving body 40 moves along the lower straight line of the track 32. At the same time as the movement of the section is finished, feeding of the workpiece 26 is started, and the workpiece 26 is moved a predetermined distance in the direction of arrow A while the track moving body 40 moves along the upper straight section. Here, in order to adjust the timing with the feeding device 12, the structure may be such that the track moving body 40 is stopped at a predetermined position above the track 32.

Next, the tilting operation of the cutting section 14 while the object to be cut 26 is being moved will be explained. This time motor 50
is rotationally driven, and the rotational power is transmitted through gears 52, 48.
The connecting shaft 46 is rotated through the . This connecting shaft 4
The rotational power of 6 is transmitted to gear 4 from gears 48 and 49 at both ends.
4, 45, both track rotation shafts 24, 2
5 (not shown). As a result, the L-shaped arms 42, 43, the pillars 22, 23, and the back plate 19 are fixed to the truck rotation shafts 24, 25.
The track portion 20 also tilts. When the tilt angle reaches a predetermined value, the motor 50 is stopped and the track portion 20 is maintained at a predetermined angle. after that,
As described above, the cutting of the object 26 is repeated.

At this time, the rotary blade 21 is tilted by a predetermined angle due to the above-mentioned tilting, and diagonal cutting at a predetermined angle is possible. Further, since the locus of the blade surface of the rotary blade 21 passes through the line B--B which is the center of rotation of the track section 20, the cutting location of the object to be cut 26 does not change regardless of the tilting of the track section 20. At the same time, since the cutting edge protrudes below the surface on which the object to be cut 26 is placed, the object to be cut 26 can be reliably cut and separated.

In this embodiment, as described above, the truck moving body 4
When the rotary blade 21 rotates around the track 32, the rotary blade 21 automatically rotates. Therefore, there is no need to place a motor for rotating the rotary blade 21 on the track moving body 40, and the mass of the moving part can be reduced. This is truck moving body 4
When rotating the 0 at high speed and performing high-speed cutting processing,
This is a very advantageous point. Further, since the track 32 is in a closed loop, the track moving body 40 only needs to move in one direction, which is also advantageous for high-speed cutting, and since the track moving body 40 always moves under the same conditions, Accurate cutting without cracking is possible. Furthermore, in this case, since the cutting direction is constant, the rotational direction of the rotary blade 21 and the transport direction of the rotary blade 21 can always be optimally combined. Having both ends of the track 32 in a semicircular shape is also advantageous for the high-speed rotation of the track moving body 40. Furthermore, since the lower side of the track 32 is straight, the cutting distance can be long, and even relatively wide objects can be cut. Further, as described above, since the workpiece 26 is moved while the track moving body 40 moves in the upper straight section, continuous high-speed movement is possible.

In the above embodiment, the movement of the track moving body 40 along the track 32 is driven by the chain 34, but this may be a belt or the like, or the track moving body 40 itself has a motor and drives it by the rotary blade 21. It may also be used as a driving source for the rotation of the track moving body 40 and the revolution of the track moving body 40 (track rotation). In this case, although the weight of the track moving body 40 increases somewhat, it is still lighter than the table on which the object to be cut is placed, and it does not depend on the weight of the object to be cut. It is still possible to move at high speed by changing direction. Furthermore, the effect that the transmission mechanism (for example, bevel gears 68, 70, pulley 72, belt 74, etc.) for supplying power from the outside of the above embodiment becomes unnecessary is obtained.

The shape of the track is not limited to the shape of the above embodiment, and the effects of the present invention will still be achieved even if it is, for example, circular or elliptical.

[Effects of the Invention] According to the movable rotary blade cutting device of the present invention, by simply moving the track moving body in one direction, it is possible to perform cutting with the rotary blade and to retract the rotary blade to the upper side of the processing table and return it back. Since this can be repeated smoothly at high speed, the rotary blade can be moved at high speed and the object to be cut on the processing table can be cut cleanly and at high speed.

[Brief explanation of drawings]

FIG. 1 is a perspective view including a partially exploded view of the cutting section of a movable rotary blade cutting device according to an embodiment of the present invention, and FIG. 2 is a perspective view schematically showing the entire movable rotary blade cutting device.
FIG. 3 is a sectional view taken along line CC in FIG. 1. 14... Cutting section, 20... Track section, 21...
...Rotary blade, 32...Truck, 32a, 32b...
...Rail, 34...Chain, 37...Sprocket, 38...Rail, 39...Rack, 40...
...Truck moving body, 40a...Intermediate gear, 40b
...Pinion, 40c...Center shaft, 40d...Roller, 40e, 40f...Bearing.

Claims (1)

[Scope of Claims] 1. Movement rotation in which a track moving body is moved in one direction along a closed loop track while rotating a rotary blade provided on the track moving body to intermittently cut a workpiece on a processing table. In the blade cutting device, the shape of the track includes: a cutting section trajectory arranged in parallel near the upper surface of the processing table; a retraction section trajectory arranged above the processing table; both ends of the cutting section trajectory; It consists of a connecting track that connects both ends of the evacuation section track with a curved line, a rack having a similar shape to the track of the track is attached to the track, and the track moving body includes a pinion meshing with the rack; A movable rotary blade cutting device comprising: a transmission section that transmits rotational motion of a pinion to the rotary blade; and a drive mechanism that moves the track moving body along the track. 2. A movable rotary blade cutting device according to claim 1, wherein said drive mechanism comprises a chain mechanism driven along said track. 3. The movable rotary blade cutting device according to claim 2, wherein the shape of the track is comprised of semicircles at both ends and parallel straight lines connecting the semicircles.