JPS6040816B2 - Nigiri rice forming machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a machine for forming rice balls such as triangular rice balls.

In recent years, it has been proposed to form rice balls, such as so-called triangular rice balls, by using a mold rather than by hand.
Molding machines for this purpose have appeared, but in addition to taking up space and requiring a lot of work to clean, they are particularly unable to mold the bottom side, that is, they can only produce molded rice with a flat bottom side.

Therefore, in order to form nigiri rice with a rounded bottom surface that looks as if it had been made by hand, the inventor set up a main mold with a mold hole that passes through and closes from the top and bottom, and rotates it around a vertical rotation axis. A lower mold of a predetermined shape is slid up and down in the lower part of the mold hole of this main mold. It is possible to hold the iron joint as much as possible, and furthermore, it is lowered into the mold hole above the mold hole of the mold main mold at the first stop position after the stop position that becomes the rice holder, and lowers into the mold hole every time the mold main mold rotates. This led to the development of a molding machine that is equipped with a molding upper mold that presses the rice in the mold cavity, and is configured to take out the molded rice in the mold cavity at the next stop position of the main mold. In particular, in the present invention, in the above-mentioned molding machine in which the main mold is rotated, a rice supply plate that matches the mold hole is provided so that the rice filling operation can be easily and reliably carried out into the mold hole. With,
The rice supply plate is designed so as not to impede the rotational movement of the main mold.

Next, embodiments of the present invention will be described based on the drawings.

The embodiment shown in the figure shows a molding machine for nigiri rice in which ingredients are wrapped inside, and 1 is a machine body with a built-in drive source and power transmission mechanism (not shown) for the machine, 2 is a table on the top of the machine body, and 3 4 is a base body with a concave cross section supported by the rotary shaft 2 at a position slightly above the table 3, and this base body 4 is connected to the rotary shaft by an appropriate power transmission mechanism. 2, it is provided so as to rotate intermittently by a predetermined angle. Six molding main molds 5 having the same shape are fixedly arranged radially around the base body 4 at equal angular intervals, that is, 60° intervals with respect to the rotation shaft 2, and each molding main mold 5 is fixed to the rotation shaft 2. and rotates intermittently by a predetermined angle in cooperation with the base body 4.
The above rotation angle is the arrangement angle of the main mold 5 (60 in the case of the figure).
0), and each main mold 5 is configured to always stop at a fixed position. As a means for fixing the main mold 5, in the figure, the dovetail end of the main mold 5 is joined to a dovetail groove formed on the outer periphery of the base 4.
It is fastened with bolts etc. from the inside. Each of the above molding main molds 5 has the same cross-sectional shape corresponding to the planar shape of the rice ball to be molded, for example, in the case of triangular rice ball molding, a triangular shape with rounded corners, etc., with vertically penetrating openings.
A required number of mold holes 6 (three in the case of the figure) are provided, and lower molding molds of a predetermined shape are competitively held in the lower part of each mold hole 6 so as to be movable up and down.

The upper surface side of the lower forming mold 7 is recessed leaving a circumferential twill portion 8 to correspond to approximately the lower half of the rice ball to be formed, and the circumferential green of the recessed portion 9 is formed in a rounded curved shape. . The lower molding mold 7 is mounted via a support shaft 11 on a support plate 10 that is vertically movably suspended from each molding main mold 5, and when the support plate 10 is at the lowest position, it is placed in the mold hole 6. It is supported so as to be located at the lower part, and is configured to slide up and down in the mold hole 6 as the support plate 10 moves up and down. Various implementations are possible for the suspension structure in which the support plate 10 can be moved up and down, but in the illustrated embodiment, the upper part of the main mold 5 has fleas in several places outside the mold hole 6 and the inner part has large fleas. A vertical through hole 12 having a stepped portion 12' at the lower circumference is provided, and a hanging rod 13 having a collar 13' at the upper end is inserted into this through hole 12 from above to form the stepped portion 12' and the golden phrase 13'. A support plate 10 is fixed to the lower end of the hanging rod 13. The support plate 10 is suspended in four positions with a slight distance from the table 3 and rotates intermittently together with the main mold 5. Among the stop positions of the main mold 5 that rotates intermittently, one stop position is set at the rice receptacle into the mold hole 6 of the main mold 5, and the other stop position after this is set at the mold hole 6. A press molding section is provided with a molding upper mold that can freely lower the steel plate into the hole 6,
Furthermore, the next stopping position is configured as a take-out part for the molded rice. Among the stop positions 5, the second stop position following the first stop position, which is the rice container part A, is the recessed hole forming part mouth for the rice in the mold hole 6, and the third stop position is the rice holder A. The odor inlet part C to the recessed hole part, the fourth stop position is the odor enveloping part 2, the next fifth stop position is the press molding part, and the sixth stop position is the part for taking out the molded rice. They are set up as follows, and each has the following configuration.

T In the rice container part A (Figs. 3 to 6), 15 is a rice supply hopper supported by a support arm 16 attached to the machine body 1, and 17 is a rice supply hopper supported by a support arm 16 attached to the machine body 1; A rice supply plate that is bendably connected by hinge structures 19, 19 and is located above the main mold 5, and is connected to the hopper 15 by the hinge structures 19, 19 and is in a horizontal state. In the case shown in the figure, a rod 21 extending from a cylinder mechanism 20 such as an air cylinder is connected with a pin to the lower surface of the rice supply plate 17, and the main mold 5 is rotated intermittently. Since it moves up and down due to the forward and backward action of the rod 21 by the cylinder mechanism 20 corresponding to the operation, it is in the upper position when the main mold 5 rotates, and descends to the upper surface of the main mold 5 only when the rotation stops. It is configured to obtain.

The rice supply plate 17 is provided with a closure 22 that matches the mold hole 6 when it comes into contact with the upper surface of the main mold 5, and the hopper 15
The rice inside is spread out on the rice supply plate 17 so that it can be easily fed into the mold hole 6 from the entrance 22. Incidentally, side plates 17' and 18' are provided upright at the side ends of the rice supply plate 17 and the chute 18 to prevent rice from spilling. Further, in the rice holder part A, a vertical push-up rod 23 is provided below the support plate 10 when the main mold 5 is at the stopping position, and the push-up rod 23 extends through the table 3 and has its upper end protruded.

This push-up rod 23 is connected to a cylinder mechanism inside the fuselage 1,
A suitable means such as a cam or a crank mechanism moves up and down in response to the intermittent rotation of the main mold 5, and when the main mold 5 stops rotating, it pushes up the support plate 10 and opens the mold hole above it. 6
The lower mold 7 inside the mold is raised and lowered before the rotation starts after the rice filling operation is completed, and the amount of rice that enters the mold hole 6 is determined by the raised height position of the lower mold 7. It is to be determined. When the support plate 10 reaches a certain height when the support plate 10 is pushed up, a hook 24 that engages with the edge of the support plate 10 is attached to the molding main mold 5 and The hooks 24 are installed mainly on the outer side where they do not get in the way of the rotation of the support plate 10, and the engaging action of the hooks 24 keeps the rising height of the lower mold 7 constant and allows a fixed amount of water to be poured into the mold hole 6. It is set up so that food can be supplied. The hook 24 is attached to the material 24a on the fixed side of the table 3 so that its position can be adjusted vertically by using a long hole in the vertical direction, and the position of the rising height of the lower mold is adjusted to the position of the rising height of the nigiri rice to be molded. It is set up so that it can be adjusted accordingly. When the push-up action is released by lowering the push-up rod 23, the lower mold 7 and the support plate 10 may not descend under their own weight due to the viscosity of the rice adhering to the circumferential surface of the mold hole 6. To prevent this, , the upper end of the push-up rod 23 is provided with an engaging protrusion 2 formed by a concave groove running at least in the rotational direction, for example, a concave groove 25 that continues in the intervening direction as shown in the figure.
Further, on the lower surface of each support plate 10, a protrusion 27 having a hook-shaped engagement portion 27a that can be engaged with the protrusion 26 for intermittent rotational movement is provided. established,
The support plate 10 and the lower mold 7 are forcibly lowered by the lowering action of the push-up rods 23 in the platoon engaged state.

At the mouth of the recessed molding part which is the second stop position of the main mold 5 (FIG. 7), there is a tapered bottom portion above the mold hole coaxially with each mold hole 6 at the stop position. A molding main mold 5 in which a comb-shaped pressing mold 28 rotates intermittently.
It descends into the mold hole 6 once every time the rotation stops.
It is provided so that the center of the inner rice can be recessed.

In the case of the figure, the comb mold 28 is fixed and vertically mounted on a mounting board 30 suspended from a horizontal support arm 29, and the support arm 29 can be moved up and down on a support 31 erected at a corner of the body 1. A rod 33 that can be extended from a cylinder mechanism 32 such as an air cylinder arranged vertically below the support arm 29 is connected to the center of the support arm 29, and the rod 33 is moved forward and backward by the cylinder mechanism 32. The comb-shaped mold 28 moves up and down together with the support arm 29.
When the molding main die 5 rotates, it is in an upper position, and when the rotation stops, it descends once to a predetermined height suitable for molding a recessed hole, and rises again. In addition, at the fourth stop position of the main mold 5, which is the wrapping molding part of the ingredient (Figs. 8 and 9).
(Fig.), above each mold hole 6 at the stop position, there are intermittent depression-shaped pressing molds 34, which have a planar shape that iron-fits into the mold hole 6, and whose lower surface side is slightly curved upward in the shape of a mortar. Each time the main mold 5 rotates to stop, the rice is competitively lowered into the mold hole 6 once, and the peripheral portion of the rice inside the mold hole 6 can be pushed inward.

In the case of the figure, similar to the case of the birch-shaped die 28, the depression-shaped die 34 is attached to a mounting board 3 connected to a horizontal support arm 35.
6, and a support arm 35 is fixed downward to the fuselage 1.
The rod 39 of the cylinder mechanism 38 disposed below is connected to the center of the support arm 35, and the rod 39 of the cylinder mechanism 38 is connected to the center of the support arm 35. The pushing die 34 together with the support arm 35 is configured to descend once and rise again when the molding main die 5 stops rotating due to the movement of the rod 39 back and forth. In addition, when the depression-shaped pressing mold 34 is triangular and is recessed in a mortar shape, it has a shape that rises at the sides of the triangle. Furthermore, in the press molding part which is the fifth stop position of the main mold 5 (FIGS. 10 and 11), 40 is an upper mold for molding supported above each mold hole 6 at the stop position, The upper mold 4 for molding is vertically symmetrical and identical to the lower mold 7 in the mold hole 6, that is, the lower surface side is recessed with the surrounding green part 41 remaining so as to correspond to approximately half of the rice to be molded. , the chat section 42
The periphery of the mold is formed into a rounded surface shape, and the iron bar descends into the mold hole 6 once every time the main mold 5 rotates intermittently to stop the rotation, and presses the rice in the mold hole 6. It is provided so that it can be molded.

In the case of the figure, the upper mold 40' for molding and the horizontal support arm 4
The support arm 43 is fixed downward to a mounting board 44 connected to the fuselage 1, and furthermore, the support arm 43 is movably moved up and down on a support 45 erected on the fuselage 1, and is disposed below the support arm 43 in the center thereof. The rod 4 of the cylinder mechanism 46
7 are connected to each other, and the upper die 40 together with the support arm 43 descends once and rises again when the molding king die 5 stops rotating due to the movement of the rod 47 back and forth by the cylinder mechanism. Furthermore, in order to take out the molded rice which is the sixth stop position of the main mold 5, a vertical pusher is inserted below the support plate 10 at the stop position, penetrating the table 3 and allowing the upper end to protrude. A lifting rod 48 is provided. This push-up rod 48 is moved up and down in response to the intermittent rotation of the main mold 5 by an appropriate means similar to the push-up rod 23 of the food container A, and stops the rotation of the main mold 5. At the same time, the support plate 10 is pushed up and the lower mold 7 for molding is placed above it.
is positioned near the upper part of the mold cavity 6 and is configured to descend before the rotation starts. Next, the operation when molding rice balls using the above-mentioned molding machine will be explained.

First, when the main mold 5 stops at the first rotation stop position of the main mold 5, the equipped rice supply plate 1 at the upper position
7 descends onto the upper surface of the main mold 5 and makes contact with the opening 22 of the main mold 5 and the mold hole 6, and in this state, the rice a in the rice supply hopper 15 is poured onto the rice supply plate 17. The 12th
Figure A]. At this time, the push-up rod 22 installed below the main mold 5 rises simultaneously with the downward movement of the rice supply plate 17, and the support plate 10 of the lower mold 7 engages with the hook 24. The lower molding mold 7 above it is raised to a predetermined height in the mold hole 6, and therefore, if the rice feed is opened to the full extent of □22,
An amount of rice a approximately equivalent to the mold hole space above the lower mold 7
is fed into each mold hole 6 without having to measure it.
This means that approximately a certain amount of rice a can be supplied within the same period. After this rice filling work is completed, the push-up rod 23 descends and returns to its original position, and along with this, the support plate 10 returns to the predetermined suspended state together with the lower mold 7 thereon, and at the same time The rice supply plate 17 is removed above the main mold 5. Therefore, the main mold 5 includes the rice supply plate 17 and the push-up rod 2.
It can be rotated without being hindered by 3. When the main mold 5 into which a predetermined amount of rice a has been fed as described above reaches the mouth of the concave molding part, which is the next stop position, each mold After the ridge-shaped die 28 provided above the coaxial hole 6 descends into the die hole 6 and dents the center part of the metal a in the die hole 6 [Fig. 12], that is, forms the concave hole b. By the time the main mold 5 starts rotating, it returns upward and the main mold 5 rotates. Then, at the filling part C, which is the next stop position of the main mold 5, while the main mold 5 is stopped,
Put a pinch of odor c of Tsukudani konfuku, bonito flakes, umeboshi, etc. into the concave hole b formed in the rice a in the mold hole 6.
Figure 12 C]. In this way, when the main mold 5 reaches the next fourth rotation stop position, the wrapping molding part 2 of the ingredient, the depression provided above the mold hole 6 corresponds to the rotation stop action of the main mold 5. The concave mold 34 falls into the mold hole 6, and due to this descending action, the peripheral part of the rice a is pushed inward by the mortar shape of the mold 34, and the odor c in the concave hole b flows into the interior of the rice a. It is wrapped up [Figure 12, 2].

Thereafter, by the time the main mold 5 starts rotating, the press mold 34 rises and comes out of the mold hole 6 and returns to the upper position, and the main mold 5 rotates. In the press molding section E, which is the stopping position of the next fifth main mold 5, the molding guide mold 40 provided above the mold hole 6 is moved in response to the rotation stopping action of the molding king mold 5. The iron alloy descends into the hole 6, and this descending action presses the metal a inside the mold hole 6, which is then pressure-formed between the upper mold 40 and the lower mold 7. The facing surfaces of the mold 40 and the lower mold 7, which are the molding surfaces, are recessed with peripheral green parts 41 and 8 remaining as shown in the figure, and the peripheral green parts of the recessed parts 42 and 9 are formed in a rounded curved shape. If the rice is vertically symmetrical and the same shape, the rice that is pressed by this will be formed into a rounded shape with the upper and lower peripheral edges corresponding to the radius curved surface.

[Figure 12 E]. Thereafter, by the time the main mold 5 starts rotating, the upper mold 40 rises and comes out of the mold hole 6 and returns to its original position above, and the main mold 5 rotates. Then, at the next stop position of the sixth molding king mold 5, the push-up rod 48 provided below the stop position rises in response to the rotation stopping action of the molding main mold 5, and the molding lower mold 5 The support plate 10 is pushed up, and the lower mold 7 on it is pushed up to the vicinity of the upper entrance of the mold hole 6 together with the molded rice A thereon, and the molded rice A comes out upwards accordingly. The state is reached [shown by the chain line in FIG. 12], and it can be taken out using a magic hand (not shown), etc. After that, as the push-up rod 48 descends, the lower mold 7 for molding along with the support plate 10 is moved to a predetermined position. Descend and return to the position.

In this way, each of the forming king molds 5 rotates from the first stop position, the rice holder A, to the sixth stop position, the formed rice take-out part, while repeating the cresting rotation and stopping. During this time, the action of putting rice into the mold hole 6, the recessed hole forming part for the rice in the mold hole 6, the filling into the recessed hole part, the wrapping molding of the filling,
Formed rice A, such as a triangular rice ball, in which ingredients are wrapped inside the rice, where wisteria pressure forming from the top and bottom and taking out of the formed rice are performed sequentially.
In other words, so-called nigiri rice is formed one after another. In addition, in the above-mentioned embodiment shown in the figure, a case was explained in which nigiri rice is molded with seasoning odors wrapped inside, but when molding nigiri rice that does not contain ingredients, the concave hole molding part of the molding machine described above can also be used. Mechanically, the opening, the filling part C, and the odor enveloping molding part 2 are omitted, and the present invention can be carried out by omitting the stopping position of these parts. It can be molded into a predetermined shape using a lower molding mold and an upper molding mold provided in the.

As described above, according to the molding machine of the present invention, each molding main mold rotates from the rice container position to the molded rice take-out position while repeating successive rotations and stops, and during that time, the rice is poured into the mold hole. Input, pressure forming by the lower mold and upper mold, which also serve as the bottom of the mold hole, and removal of the molded rice can be performed semi-automatically and efficiently.
Moreover, since the upper mold for molding and the lower mold for molding are separate from the main mold, for example, as shown in the figure, the peripheral edge remains and is recessed, and the surrounding green of the recessed part is rounded. To obtain molded rice that can be formed into a curved shape and have rounded peripheral edges on both upper and lower sides, and to produce uniformly shaped nigiri rice that looks as if it was actually made by hand by molding. In particular, in the case of the present invention, the rice supply means in the rice container is provided with a rice supply plate that is connected to the rice supply hopper through a hinge part and is movable up and down, and the rice supply plate is moved intermittently into the molding main mold. It is provided so that it can be lowered and placed on the upper surface of the main mold only when the rotation is stopped according to the rotational movement of the main mold, and has a seal opening that matches the mold hole when inserted into the upper surface of the main mold. Therefore, when the rice supply plate is lowered onto the upper surface of the main mold, the rice in the hopper can be fed by simply letting it spread out on the rice supply plate and dropping it into the mold hole from the closed opening. The rice, which is relatively soft and viscous and is difficult to handle due to the collection of granules, can be easily and reliably fed into the mold hole without much effort, and the rice filling work is extremely easy to perform, and it is easy to spread and form. Efficiency can be further increased.

In addition, there is no risk of rice grains spilling or adhering to the table or other places, so the work area is kept clean and sanitary. Furthermore, after the above-mentioned rice filling operation, the rice supply plate separates upward from the main mold, so the main mold can rotate without coming into sliding contact with the rice supply plate, and even if the worker's finger is inserted into the entrance, Even in this state, there is no risk of fingers getting caught, and there is no problem in rotating the main mold.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and Fig. 1 is a plan view of the entire molding machine, Fig. 2 is a perspective view of the main parts, and Fig. 3 is a front view of a part of the molding machine. Figure 4 is a schematic perspective view of the rice supply plate portion, Figure 5 is an enlarged perspective view from below, and Figure 6 is a schematic perspective view of the rice supply plate portion.
The figure is a sectional view of the same, FIG. 7 is a perspective view of the mouth part of the recessed hole molding part, FIG. 8 is a perspective view of two parts of the enveloping molding part, FIG. Fig. 11 is a sectional view of the same part, Fig. 12 is a sectional view of each part showing the forming process from the rice container to the shaped rice take-out part, and Fig.
FIG. 3 is a perspective view showing an example of rice balls formed according to the present invention. 1...Body, 2...Rotating shaft, 3...Tafle, 5...
・Molding main mold, 6... Molding hole, 7... Lower mold for forming, 10... Support plate, 15... Hopper for general food service, 1
7... Rice supply plate, 19, 19... Hinge part, 22... Sekiguchi, 28... Twisted press mold, 34... Concave press mold, 40...
Upper mold for molding, A...rice container part, opening...concave hole molding part, c.
・Ingredients storage section, 2. Wrapping molding section, E. Pressing molding section, H. Molded rice take-out section. Figure 1 Figure 3 Figure 4 Figure 2 Figure 13 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12

Claims (1)

[Claims] 1. A plurality of molding main molds each having a predetermined cross-sectional shape and an appropriate number of mold holes with vertical openings are arranged radially at equal angular intervals with respect to a vertical axis of rotation, and a molding mold having a predetermined shape is fitted and held in a lower part of the mold hole of the molding main mold so as to be able to slide vertically;
In addition, one stop position of the main mold, which rotates intermittently, is used as a rice holder for putting rice into the mold hole, and at the second stop position after this, the main mold is placed above the mold hole. A molding upper mold of a predetermined shape is provided, which fits and descends into the mold hole once for each rotation stop action to press the rice in the mold hole, and the upper mold in the mold hole presses the rice in the mold hole at the next stop position of the molding main mold. In a molding machine in which the molded rice is pushed upward by a lower mold to be taken out, the rice container has a rice supply hopper connected to a rice supply hopper through a hinge part, and is movable up and down in a connected state. The food supply plate is provided so that it can be lowered and placed on the upper surface of the molding main mold only when the rotation of the molding main mold stops in response to the intermittent rotational movement of the molding main mold, and the food supply plate is placed on the upper surface of the molding main mold. A nigiri rice molding machine characterized by having an opening that matches a mold hole when the rice is molded.