JPS6040818B2 - 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 use molds to form triangular-shaped rice balls, such as so-called triangular rice balls, instead of hand-pulling them, and molding machines for this purpose have appeared, but all of them take up space and are time-consuming to clean. In addition, the lower surface side could not be formed, that is, only the molded rice with a flat lower surface side could be obtained.

Therefore, the inventor proposed a method of molding nigiri rice with a rounded bottom surface that looks as if it had been made by hand. The molding molds are arranged radially at equal intervals with respect to the axis and can be rotated intermittently by the arrangement angle, and a lower molding mold of a predetermined shape is vertically placed in the lower part of the mold hole of this main molding mold. They are held next to each other as much as possible, and are also joined in the mold hole above the mold hole of the mold main mold at a stop position after the stop position of the mold main mold, which becomes the rice container, 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 descends to press the rice in the mold cavity, and that the molded rice in the mold cavity is taken out at the next stop position of the main mold. It is.

However, in the above-mentioned nigiri rice forming machine, in order to mold nigiri rice with uniform weight and density, it is necessary to make the rice islands placed in the mold hole of the main mold uniform.
Therefore, in the present invention, at the stop position of the main mold, which serves as the rice container, the lower mold in the mold hole is raised to a predetermined height position by a push-up action from below, and the amount of rice entering the mold hole is quantified. However, in this case, when the push-up action is released after filling the rice, the lower mold may not descend under its own weight due to the viscosity of the rice adhering to the surface of the mold hole, and the molding There is a risk that it may interfere with the continuous operation of the machine.

In view of this, in the present invention, a means for lowering the lower die to a predetermined position is added to the above-mentioned push-up means to avoid the above-mentioned problem. Next, embodiments of the present invention will be described with reference to the drawings.

The embodiment shown in the figure shows a nigiri rice molding machine that envelops odor inside, and 1 is a machine body with a built-in drive source and power transmission mechanism (not shown) for the machine, and 2 is a table 3 on the top of the machine body. A vertical rotating shaft 4 protruding upward from the central portion is a base body with a concave cross section supported by the rotating shaft 2 at a position slightly above the table 3, and this base body 4 is connected to the rotating shaft 2 by an appropriate power transmission mechanism. It is provided so as to rotate intermittently at a predetermined angle at a time. 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 (60o in the case of the figure)
), and each main mold 6 is configured to always stop at a fixed position. As a means for fixing the main molding mold 5, in the figure, the dovetail-shaped end of the main molding mold 5 is iron-fitted to a dovetail groove formed on the outer periphery of the base 4, and is screwed from the inside of the base 4 with bolts or the like. . 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 a lower molding mold 7 of a predetermined shape is held at the lower part of each mold hole 6 so as to be slidable vertically.

The upper surface side of the lower forming mold 7 is recessed leaving a circumferential twill portion 8 so as to correspond to approximately the lower half of the rice ball to be formed, and the periphery of the recessed portion 9 is formed in a rounded curved shape. The lower molding mold 7 is installed via a support shaft 11 on a support plate 10 which is vertically movably suspended from each molding main mold 5, and when the support plate 10 is at the lowest position, it is placed inside the mold hole 6. It is supported so as to be located at the bottom, and is configured to slide up and down within the mold hole 6 as the support plate 10 moves up and down. Various implementations are possible for the hanging structure in which the support plate 10 can be moved up and down, but in the illustrated embodiment, the upper part has a large diameter and the inner part is installed at multiple locations outside the mold hole 6 in the main mold 5. A vertical through hole 12 having a stepped portion 12' at the lower circumference is provided, and a hanging rod 13 having a flange 13' at the upper end is inserted into the through hole 12 from above to form the stepped portion 12' and the flange 13'. The support plate 10 is fixed to the lower end of the hanger 13. The support plate 10 is hung 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. The press-forming part is equipped with a molding upper mold that can be freely lowered into the hole 6, and the next stop position is set as a take-out part for the molded rice, which molds nigiri rice with ingredients wrapped inside. In the illustrated embodiment, among the six stopping positions around the main mold 5, the second stopping position following the first stopping position, which becomes the rice holder part A, is set to the recessed hole for the rice in the mold hole 6. The mouth of the molding part, the third stop position is a part for inserting the ingredients into the concave hole part C, and the fourth stop position is the part 2 for wrapping and forming the ingredients,
The next fifth stop position is set as the press molding part, and the sixth stop position is set as the shaped rice take-out part, and each has the following configuration.

In the above-mentioned rice container (Figs. 3 to 5), 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; The rice supply plate is connected to the hopper 15 by the hinge structures 19, 19 and is placed 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. It moves up and down due to the movement of the rod 21 by the cylinder mechanism 20' corresponding to the operation, and is in the upper position when the main mold 5 rotates, and lowers to the upper surface of the molding king mold 5 only when the rotation stops. It is horizontally constructed so that it can be accessed for download.

The rice supply V feed plate 17 is provided with an opening 22 that matches the mold hole 6 when laid on the upper surface of the main mold 5, and the hopper 1
The rice in the mold 5 can be easily fed into the mold hole 6 from the entrance 22 so as to be spread out on the plywood 17. 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, the rice container is provided with a vertical push-up rod 23 whose upper end can protrude through the table 3 at a position below the support plate 10 when the main mold 5 is stopped.

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 during the push-up action of the support plate 10, a hook 24 that engages with the twill portion of the support plate 10 is attached to the molding main mold 5 and the support plate 10 so as to restrict the rise. The hooks 24 are installed mainly at locations on the outside that do not interfere with the rotating movement of the 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 the smallest hole in the vertical direction. 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 26 formed by a concave groove extending at least in the rotational direction, for example, a concave groove 25 continuous in the circumferential direction as shown in the figure.
Further, on the lower surface of each support plate 10, a protrusion 27 having a fishing-shaped engagement portion 27a that can be sequentially fitted into the groove 25 and engaged with the engagement protrusion 26 by intermittent rotation is provided. The support plate 10 and the lower mold 7 are forcibly lowered by the lowering action of the push-up rod 23 in the engaged state.

At the mouth of the concave molding part which is the second stop position of the main mold 5 (FIG. 6), there is a taper whose lower end is tapered above and coaxially with each mold hole 6 at the stop position. A main mold 5 in which a camellia-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 fixedly attached to 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 the corner of the fuselage 1. A rod 33 is connected to the center of the support arm 29 and extends from a cylinder mechanism 32 such as an air cylinder vertically arranged below the support arm 29, and the rod 33 is moved forward and backward by the cylinder mechanism 32. The ridge-like mold 28 moves up and down together with the support arm 29, and when the molding main mold 5 rotates, it is in the upper position, and when the rotation stops, it descends once to a predetermined height suitable for concave hole molding and rises again. It is configured like this. In addition, in the wrapping molding part of the ingredient which is the fourth stop position of the main mold 5 (Figs. 7 and 8), above each mold hole 6 at the stop position there is a planar shape that fits into the mold hole 6. A depression-shaped pressing mold 34, which has a large and concave shape with a slightly curved upward concave shape, is inserted into the mold hole 6 once every time the main mold 5 rotates intermittently. It is equipped so that the drum can descend and push down the peripheral part of the rice in the mold hole 6 inward.

In the case of the figure, similar to the case of the ridge-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 a 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 press die 34 together with the support arm 35 is configured to descend once and rise again when the main mold 5 stops rotating due to the movement of the support arm 35.
In addition, when the depression-shaped pressing mold 34 is triangular and is recessed in the shape of a mortar, it has a shape that rises at the sides of the triangle. Further, in the press molding part E, which is the fifth stop position of the main mold 5 (FIGS. 9 and 10), 40 is an upper mold for molding supported above each mold hole 6 in the stop position, The upper molding mold 40 is vertically symmetrical and identical to the lower molding mold 7 in the mold hole 6, that is, the lower surface side is recessed leaving a peripheral edge 41 corresponding to approximately half of the rice ball to be molded. Recessed part 4
The peripheral edge of the mold 2 is formed into a rounded curved shape, and each time the main mold 5 rotates intermittently, it competitively descends into the mold hole 6 and presses the rice inside the mold hole 6. It is provided so that it can be molded.

In the case of the figure, the upper mold 40 has a horizontal support arm 43
Further, a support arm 43 is fixed downward to a mounting board 44 connected to the fuselage 1, and a support arm 43 is freely movable up and down on a support post 45 erected on the fuselage 1, and is arranged below the support arm 43 in the center thereof. Rod 47 of cylinder mechanism 46
are connected to each other, and the lower die 40 together with the support arm 43 descends once and rises again when the main mold 5 stops rotating due to the movement of the rod 47 by the cylinder mechanism. Furthermore, at the sixth stop position of the molding main mold 6, which is the take-out part A for taking out the molded rice, there is a vertical pusher which penetrates the table 3 and whose upper end protrudes below the support plate 10 at the stop position. 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 this time, the support plate 10 is pushed up to position the lower mold 7 thereon near the upper opening of the mold hole 6, and then lowered before the start of spreading. 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 rotational stop position of the main mold 5, the rice supply plate 1 installed above the main mold 5 stops.
7 is lowered onto the upper surface of the main mold 5, and the mold opening 22 and the mold hole 6 are aligned with each other, and in this state, the rice a in the rice supply hopper 15 is placed on the rice supply plate 17. [11th]
Figure A]. At this time, the push-up rod 23 installed below the main mold 5 rises at the same time as the rice supply plate 17 is lowered and loaded, 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 within the mold hole 6. Therefore, if the rice feed is fully cut to the Sekiguchi 22, the lower molding mold 7 is raised to a predetermined height within the mold hole 6. An amount of rice a approximately equivalent to the mold hole space above the mold 7 is fed, and a substantially fixed amount of rice a can be fed into each mold hole 6 without having to be measured. 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 hanging state together with the lower mold 7 thereon, and at the same time the above-mentioned The rice supply plate 17 is removed above the main mold 5 for molding. Therefore, the main mold 5 includes the rice supply plate 17 and the push-up rod 23.
It can be rotated without being disturbed. 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 A ridge-like die 28 provided above the coaxial center of the hole 6 descends into the die hole 6 and dents the center part of the metal a in the die hole 6 [Fig. 11], that is, forms a concave hole b. Thereafter, the main mold 5 returns upward by the time the main mold 5 starts rotating, 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, the rice a in the mold hole 6 is
Pour a pinch of simmered kelp, bonito flakes, umemashi, etc. into the concave hole b formed in the hole b [Figure 11 C].
In this way, when the molding main mold 5 reaches the next fourth rotation stop layer, which is the wrapping molding part 2 of the ingredient, a layer provided above the mold hole 6 corresponds to the wrapping stop action of the molding main mold 5. The depression-shaped pressing mold 34 competitively descends 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 pressing mold 34, and the tool c in the recessed hole b is pushed into the interior of the rice a. It is wrapped up [Figure 11 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 its original position above, and the main mold 5 rotates. At the next press molding part, which is the stopping position of the fifth main mold 5, an upper mold 40 for molding is provided above the mold hole 6 in order to stop the rotation of the main mold 5.
falls into the mold hole 6, and due to this descending action, the mold hole 6
The inner rice a is pressed and pressure-molded between the upper molding mold 40 and the lower molding mold 7, and the upper molding mold 40 and the lower molding mold 7
As shown in the figure, the opposing surface side which becomes the molding surface is the circumferential twill portion 41,
If the recessed portions 42 and 9 are recessed with the remaining portions 8 and 9, and the peripheral edges of the recessed portions 42 and 9 are formed into a curved surface shape and are vertically symmetrical, the food to be pinched by this will have its upper and lower peripheral edges aligned with the radius. Molded into a rounded shape that corresponds to the curved surface [No. 11
Picture tree]. 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 6 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 molding mold 7 on it is pushed up to the vicinity of the upper entrance of the mold hole 6 together with the molding food A thereon, and as a result, the molding food A moves upward. It is in the state of exit (dashed line in Figure 11).
This can be taken out using a magic hand (not shown) or the like, and as the push-up rod 48 descends, the lower mold 7 together with the support plate 10 descends and returns to a predetermined position.

In this way, each molding main mold 5 rotates from the first stop position, which is the rice container part A, to the sixth stop position, which is the molded rice take-out part, while repeating the rotation and stopping of the punching ring. During this time, the action of putting the rice into the mold hole 6, forming the rice in the mold hole 6 into a recessed hole, putting the ingredients into the recessed hole, wrapping the ingredients, forming the ingredients under pressure from above and below, and taking out the molded rice are performed in sequence. Molded rice A, such as triangular rice balls with ingredients wrapped inside the rice
In other words, so-called nigiri rice is formed one after another. In addition, in the above embodiment based on the figures, the case was explained in which a nigiri rice with seasoning ingredients wrapped inside was formed, but when molding nigiri rice without any ingredients wrapped inside, the concave hole forming part opening of the above molding machine can also be used. , the odor chamber C and the ingredients wrapping molding section 2 are mechanically 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 the provided lower mold and upper mold.

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 molding lower mold which also serves as the bottom of the mold hole, and removal of the molded rice can be performed semi-automatically and efficiently.
Furthermore, since not only the upper mold for molding but also the lower mold for molding are separate from the molding main body, for example, as shown in the figure, the opposing molding surfaces are recessed with the peripheral twill remaining, and the recessed part is The periphery can be formed into a rounded surface shape, making it possible to obtain molded rice with rounded peripheries on both the top and bottom sides, and producing uniformly shaped nigiri rice that looks as if it was actually made by hand by molding. can. In the case of the present invention, at the bottom of the support slope at the stop position of the molding main mold in the above-mentioned container, a support plate is pushed up when the molding main mold stops rotating in response to the intermittent rotation of the molding main mold. Since it is equipped with a push-up rod that raises the lower mold in the upper mold hole, when feeding rice into the mold hole, the lower mold for molding in the mold hole is raised to a predetermined height by the pushing up action of the push-up rod. Therefore, a substantially constant amount of rice can be constantly fed into the mold hole space above the lower mold, which in turn facilitates the rice pouring work and can form nigiri rice with uniform density etc. Not only that, the upper end of the push-up rod is provided with an engaging protrusion formed by a concave groove that extends at least in all directions of rotation of the molding main mold, and the lower surface of each support plate is provided with an engaging protrusion for intermittent rotation. Since the top of A is provided with a protrusion having a conical engagement part that irons into the groove and can engage with the engagement protrusion, the push-up rod's push-up action is released. As the plate descends and returns to its original position, the support plate is forcibly pulled down together with the lower mold on it due to the engagement between the engagement protrusion and the brocade-shaped engagement part, and is brought into a predetermined suspended state. Therefore, subsequent operations can be performed smoothly without any hindrance.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Fig. 1 is a plan view of the entire molding machine, Fig. 2 is a perspective view of the same part, and Fig. 3 is a partially cut-out front view of the rice holder part A. 4 is an enlarged perspective view from below, FIG. 5 is a sectional view of the same, FIG. 6 is a perspective view of the mouth of the recessed hole molding part, and FIG. 7 is a perspective view of the two parts of the enveloping molding part. Figure 8 is a cross-sectional view of the same, Figure 9 is a perspective view of the press forming part E, Figure LO is a cross-sectional view of the same, Figure 11 A, opening 'C', and '2' wood are molded from the rice holder part A. FIG. 12 is a cross-sectional view of each part showing the forming process up to the rice take-out part, and a perspective view showing an example of the rice ball formed according to the present invention. 1... Airframe, 2... Rotation axis, 3...
・Table, 5... Main mold for molding, 6... Mold hole for molding, 7... Lower mold for molding, 10... Support plate, 15... Food Supply hopper, 23... Push-up rod, 25... Concave groove, 26...
Engagement protrusion, 27...Protrusion, 27a...
Pot-shaped engaging portion, 28... Twill-shaped press mold, 34...
・・Concave pressing die, 40... Upper mold for molding, I...
・・Food container part, opening ・・concave hole molding part, ・・・・・・filling container part, 2 ・・・wrapping molding part, ・・・・press molding part, ・・・・Kidashi part of molded rice. Figure 1 Figure 3 Figure 2 Figure 11 Figure 4 Figure 5 Figure 8 Figure 6 Figure 7 Figure 9 Figure 10 Figure 1. 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 lower molding mold having a predetermined shape is fitted into the lower part of the mold hole of the molding main mold so as to be vertically slidable, and the lower mold is suspended from the molding main mold so as to be vertically movable. One stop position of the main mold, which is placed on a support plate provided and rotated intermittently, is used as a rice container for storing rice into the mold hole, and the main mold at the second stop position after this Above the mold hole is a molding upper mold of a predetermined shape that fits and descends into the mold hole once every time the molding main mold stops rotating, and presses the rice in the mold hole. In a molding machine in which the molded rice in the mold hole is pushed upward by a lower mold and taken out at the stop position of the mold,
At the stop position of the molding main mold in the rice holder section, the support plate below is used for intermittent rotation of the molding main mold. A push-up rod is provided for temporarily raising the mold, and the upper end of the push-up rod is provided with an engaging protrusion formed by a groove communicating at least in the rotating direction of the main mold, and the lower surface of each support plate is provided with a protrusion having a hook-shaped engaging portion that can be engaged with the groove and the engaging protrusion in sequence by intermittent rotation, and the support plate and the lower die are moved by the lowering action of the push-up rod. A nigiri rice forming machine characterized by being capable of descending.