JP2002126546A - Automatic milling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic milling machine with a light weight, an easy handling, and an interchangeability. SOLUTION: An upper mortar 37 and a lower mortar 36 of which a lower surface and an upper surface slide-contact are coaxially arranged. The upper mortar 37 is unrotatably fixed and the lower mortar 36 is rotatably supported by a driving source 4 through speed-reduction means 30, 31a-31c, 32a, 32b. The upper mortar 37 is forcedly press-contacted with the lower mortar 36 by a resilient means 57 appropriately.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic milling machine that can easily and easily mill cereals and the like using a millstone at home.

[0002]

2. Description of the Related Art Conventionally, farmers use a pair of millstones, one above the other, for milling grains such as wheat and corn. The mill is placed on the upper surface of the lower mill with the upper mill placed on top of each other, and the upper mill is manually turned with the handle and rotated horizontally to make powder. However, it was very heavy and required a great deal of labor to rotate the upper mill with the handle. In addition, the rotation speed of the upper mill must be reduced due to human power, and not only productivity is extremely low, but also when moving the upper mill, it is difficult to handle it because the weight is increased and it is difficult. On the other hand, there is an automatic mill that automatically rotates a millstone using a drive source such as a motor.

[0003]

However, although the above-mentioned automatic milling machine does not require much labor, it is not only difficult to handle due to the large size of the apparatus, but also the number of persons who can use it is expensive. .

[0004] In recent years, there has been an increasing demand for handmade tastes by people. For example, there is a strong tendency and desire to eat homemade udon and soba noodles at home. There is a growing desire, and there has been a strong demand for an automatic flour mill that can be easily used without requiring much labor at home.

The present invention has been made to solve the above-mentioned problems, and has as its object to provide an automatic flour mill that can be reduced in size and weight, and that is easy and easy to handle.

[0006]

In order to achieve the object, an automatic milling machine according to the present invention comprises an upper mill and a lower mill in which a lower surface and an upper surface are in sliding contact with each other, and which is coaxially arranged. The lower mill is fixed so as not to be rotatable, and the lower mill is rotatably supported by a drive source via a speed reduction means, and the upper mill is forcibly pressed against the lower mill by a suitable elastic means. By forcibly pressing the upper mill to the lower mill by means of the resilient means, the original weight can be reduced, the weight can be reduced, and the handling becomes easier.

An upper mill and a lower mill whose lower and upper surfaces are in sliding contact with each other are coaxially arranged, the upper mill is fixed so as not to rotate, and the lower mill is rotatable by a drive source via a speed reduction means. The upper surface of the lower mill is formed in a conical convex portion, and the lower surface of the upper mill is formed in a conical concave portion facing the conical convex portion. A plurality of striated grooves extending radially so that the crossing part moves toward the outer peripheral edge with the rotation of the lower mill are engraved, and the upper mill is forcibly pressed against the lower mill by a suitable resilient means. As described above, the upper surface of the lower mill is formed as a conical convex portion, and the lower surface of the upper mill is formed as a conical concave portion facing the conical convex portion. Since a plurality of linear grooves whose crossing parts move to the outer peripheral edge side with the rotation of the lower mill are cut, the ground powder is easily discharged to the outer peripheral edge with the rotation of the lower mill, thereby improving productivity. .

At this time, if the contact pressure of the resilient means can be freely and strongly converted, an appropriate contact pressure suitable for the type of grain can be set, and the grinding condition is always good. Thereby, the taste of the food can be brought out.

If the drive source is separable and an existing drive source can be used, it can be used, for example, by using a motor such as a commercially available cooking mixer used at home. That is, if an automatic milling machine without a drive source is mounted on the motor of the cooking mixer and the drive shaft of the motor is linked to the speed reduction means, the machine can be used as it is, and the use is expanded and it is extremely convenient. It is.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of an automatic flour mill according to the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of the automatic flour mill, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a longitudinal sectional view of the essential parts. In the figure, reference numeral 1 denotes a machine base, and a motor 4 as a drive source with a drive shaft 3 facing upward is mounted inside a cylindrical protrusion 2 protruding from the upper surface thereof. The drive shaft 3
Project upward from the upper surface of the raised portion 2,
A stepped cylindrical cap body 5 is fitted and fixed to the upper end of the cap. A plurality of locking projections 6 are provided on the upper end surface of the cap body 5 so as to project radially from the center thereof in order to cooperate with a speed reduction means described later. A switch 7 for turning on / off the operation of the motor 4 is provided near the upper surface of the machine base 1.

Reference numeral 8 denotes a lower cover having an open upper surface for accommodating a lower mill 36, an upper mill 37, and a speed reduction means, which will be described later.
Is an upper cover attached to the upper surface of the lower cover 8. The lower cover 8 is formed in a cylindrical shape from a peripheral side wall 10 and a bottom wall 11. At the center of the bottom wall 11, a cylindrical portion 12 into which the cap body 5 fitted to the drive shaft 3 is inserted from the lower surface is integrally erected, and a support member 18 described later is provided on the outer peripheral surface of the cylindrical portion 12. Four fitting grooves 13 into which a plurality of locking wing pieces 23 vertically provided on the lower surface are fitted in a drop-down manner are provided radially around the cylindrical portion 12.
In addition, three positioning pieces 14 are projected radially and equidistantly from the lower surface of the bottom wall 11 for riding on the outer peripheral shoulder 2a of the raised portion 2 and fixing the lower cover 8 immovably. Fifteen
Is a take-out tube which communicates with the inside on one side near the outer periphery of the bottom wall 11 and has a tip opening protruding outward, from which various ground powders are taken out. Peripheral side wall 1 of lower cover 8
0 has four engaging pieces 16 projecting from the upper edge at equal intervals, and a locking claw 17 is provided on the inner surface of each engaging piece 16.

Reference numeral 18 denotes a substantially disk-shaped support member disposed in the lower cover 8 and comprises a bottom disk 19 and an annular thrust bearing plate 20 mounted and fixed on the upper surface thereof. Through hole 2 in which the upper edge of cylindrical portion 12 faces the center of bottom disk 19
1 is established. Further, spur gears 31a to 31c, 3 constituting a speed reducing means to be described later at predetermined positions on the upper surface of the bottom disk 19.
Three support shafts 22 for rotatably supporting 2a and 32b, respectively
a, 22b, and 22c are provided upright, and locking wing pieces 23 that fit into the respective fitting grooves 13 are vertically provided at corresponding positions on the lower surface.

Reference numeral 24 denotes the power of the motor 4 for each spur gear 31a-31.
31c, 32a, and 32b are connecting shaft members for transmitting the small disc portion 25 to the radial bearing 2 in the through hole 21.
6 is attached. On the lower surface of the small disk portion 25, a short column portion 27 interposed in the cylindrical portion 12 is protruded, and each locking projection 6 of the cap body 5 is engaged with the lower surface of the short column portion 27. An engagement groove 28 is provided. A shaft 29 is projected from the center of the upper surface, and a spur gear 30 is fixed to the upper end of the shaft 29 so as to be located on the same axis as the drive shaft 3 of the motor 4.

Reference numerals 31a, 31b, and 31c denote spur gears having substantially the same outer diameter and constituting reduction means. Of these,
As shown in FIG. 4, the spur gear 31 meshed with the spur gear 30
a is inserted into and supported by the support shaft 22a, and a small spur gear 32a is integrally provided on the lower surface thereof. The spur gear 31b is fitted and supported by the support shaft 22b and is engaged with the small spur gear 32a. The small spur gear 32b is integrally provided on the upper surface thereof. Further, the spur gear 31c is inserted into the support shaft 22c to be axially supported so as to mesh with the small spur gear 32b.

Reference numeral 33 denotes a rotating member which is fixed on the upper surface of the support member 18, ie, the thrust bearing plate 20, by superposition.
The lower surface is formed in a short cylindrical shape whose upper surface is closed while the lower surface is opened. The outer peripheral end surface of the lower surface is pressed against the upper surface of the thrust bearing plate 20, and speed reduction means such as the spur gears 31a to 31c are provided therein. The spur gear 31c is provided on the inner peripheral surface.
An annular thread groove 34 that meshes with is provided. Also, four dowels 3 are provided on the upper surface of the rotating member 33 at equal intervals on the outer peripheral edge.
5 are projected.

Reference numeral 36 denotes a lower mill which rotates integrally with the rotating member 33, and 37 denotes an upper mill which is fixed to the upper cover so as not to rotate. These are all made of, for example, granite and have a diameter of about 30 cm and a thickness of about 3 to 5 cm.
Of approximately disk shape.

The upper surface of the lower mill 36 is formed as a substantially conical convex portion 38 descending toward the periphery except for a flat central portion, and its inclined surface 38a has a direction opposite to the rotation direction of the lower mill 36. A plurality of curved linear grooves 39 are provided radially and at equal intervals so as to extend from the center of the lower mill 36. A shaft hole 4 having a large diameter on the lower side is provided in the center of the lower mill 36.
A radial bearing 41 is provided at the inner end of the large-diameter shaft hole 40a. Then, a bolt 42 is inserted and fixed from below into the shaft hole 40 via the radial bearing 41. A dowel hole 43 into which each of the dowels 35 is fitted is provided on the flat bottom surface of the lower mill 36.

The lower surface of the upper mill 37 is formed in a conical concave portion 44 facing the conical convex portion 38 of the lower mill 36. More specifically, a portion corresponding to the inclined surface 38a of the lower mill 36 is formed as an inclined surface 44a having substantially the same inclination angle except for a part of the center side, and the central portion has a larger inclination angle than the inclined surface 44a. It is formed on the large inclined surface 44b. Thereby, when the lower mill 36 and the upper mill 37 are overlapped, a substantially frustoconical space S is formed between the central portion of the lower mill 36 and the large inclined surface 44b of the upper mill 37. Also, a linear groove 45 that curves in the opposite direction when viewed in plan from the linear groove 39 of the lower mill 36 extends from the center of the upper mill 37 on the inclined surface 44 a of the conical recess 44. Also, a plurality of them are provided at equal intervals. The intersection of each of the linear grooves 45 and each of the linear grooves 39 of the lower mill 36 moves toward the outer peripheral edge with the rotation of the lower mill 36. This is because the powder ground between the two inclined surfaces 38a and 44a, which are the sliding contact surfaces, can be efficiently discharged. A shaft hole 46 through which the bolt 42 is inserted extends through the center of the upper mill 37, and a supply hole 47 that communicates with the space S extends through one side thereof. Furthermore, four dowel holes 4 are formed at equal intervals on the outer peripheral edge of the upper surface.
8 are drilled.

The upper cover 9 is formed by providing a peripheral side wall 50 around the periphery of a disk-shaped top plate 49, and a central cylindrical portion of the top plate 49 has a covered cylindrical portion 51 for accommodating the tip end of the bolt 42. An input port 52 is provided to protrude and communicate with the supply hole 47 near the covered cylindrical portion 51. On the lower surface of the top plate 49, dowels 53 fitted into the dowel holes 48 of the upper mill 37 are provided in a protruding manner. An engagement recess 54 for receiving a plurality of engagement protrusions 16 protruding from an upper end edge of the peripheral side wall 10 of the lower cover 8 is engaged with a lower end edge of the peripheral side wall 50 and an engagement claw 17 is engaged. The holes 55 are provided corresponding to each other.

Next, the procedure for assembling these components will be briefly described. First, each locking wing piece 23 is placed in the lower cover 8.
Into the respective fitting grooves 13 so that the support members 18
Place. Next, the spur gears 31a to 31c are supported by the support shafts 22a to 22c, respectively.
a to 31c and the small spur gears 32a and 32b are meshed with each other. Next, the rotating member 33 is placed on the upper surface of the thrust bearing plate 20 of the support member 18 and overlapped, and the spur gear 31c is meshed with the annular screw groove 34. Next, the dowel holes 43 are fitted into the dowels 35, and the lower mill 36 is placed on the upper surface of the rotating member 33. As a result, the rotational driving force of the drive shaft 3 of the motor 4 is transmitted via the connecting shaft member 24 to the spur gears 30, 31a to 31c,
The reduced speed is transmitted via the small spur gears 32a and 32b and the annular thread groove 34, and the lower mill 37 is rotated at a low speed.

An upper mill 37 is mounted coaxially on the upper surface of the lower mill 36, and is disposed on a bolt 42 which is inserted into the shaft holes 40 and 46 and projects upward from the upper surface of the upper mill 37.
And a compression coil spring 57 as a spring means thereon
And further bolts 4 on the
2 is screwed with a nut 58. Therefore, this nut 58
The contact pressure of the upper mill 37 with respect to the lower mill 36 can be adjusted by adjusting the tightening force. Further, the respective dowels 53 are fitted into the respective dowel holes 48, the upper cover 9 is attached to the upper mill 37, and the supply holes 47 and the input ports 52 are aligned with each other.
The upper cover 9 and the lower cover 8 are engaged by engaging the respective engagement projections 16 and the respective engagement claws 17 with the respective engagement recesses 54 and the respective engagement holes 55.
Are tightly coupled.

Next, the positioning pieces 14 protruding from the lower surface of the lower cover 8 are placed on the shoulders 2a of the raised portions 2 of the machine base 1. As a result, the engaging protrusion 6 of the cap body 5 and the engaging groove 28 of the connecting shaft member 24 are engaged, and the drive shaft 3 of the motor 4 is driven to rotate. The mortar 36 is decelerated and rotates in a horizontal plane. On the other hand, since the upper mill 37 is non-rotatably fixed and pressed against the lower mill 36 from above, the inclined surfaces 38a and 44a are in sliding contact with each other. Although the motor 4 operates electrically, a control device or a wiring cord therefor is omitted in the drawing.

The present invention is constructed as described above. In use, the machine base 1 is placed on the table or the upper surface of the floor, the switch 7 is turned on, the motor 4 is operated, and the lower mill 36 is rotated at a low speed. Then, in this state, for example, a desired raw material (wheat) is supplied from the input port 52 in an appropriate amount. This raw material falls from the supply hole 47 to the upper surface of the lower mill 36 and accumulates in the space S. Then, with the rotation of the lower mill 36, the wheat intervenes between the two inclined surfaces 38 a and 44 a slidably contacting the upper and lower mills 36 and 37, where the wheat is crushed and crushed, and the outer peripheral edge side is rubbed by the linear grooves 39 and 45. It is milled and extruded. As described above, the upper surface of the lower mill 36 is formed in the conical convex portion 38 and the upper mill 3
The lower surface of 7 is formed in a conical concave portion 44 facing the conical convex portion 38. The conical concave portion 44 extends radially to the sliding contact surface of the conical concave and convex portions 38, 44, and the intersection of the lower mill 36 with the outer peripheral edge side. Since the plurality of moving linear grooves 39 and 45 are engraved, the milled powder that is ground with the rotation of the lower mill 36 is easily discharged to the outer peripheral edge thereof, thereby improving the productivity. The flour falls from the outer peripheral edge of the lower mill 36 to the upper surface of the bottom wall 11 of the lower cover 8, and is discharged outward from the extraction tube 15. Usually, the flour is moved by the vibration of the motor 4. And
The extracted flour may be stored in a desired container (not shown) or the like.

The automatic milling machine of the present invention configured as described above is capable of milling not only grains such as rice, wheat, buckwheat, millet and millet, but also various beans, tea leaves, herbs and the like. There is. Therefore, by adjusting the amount of tightening of the nut 58 and adjusting the resilience of the compression coil spring 57 in accordance with the size and hardness of the raw material, the contact pressure of the upper and lower dies 36 and 37 is appropriately set. In addition, any of the raw materials always has a good grinding condition and can bring out the taste of food.

Further, the drive source can be separated, that is, the engagement groove 28 at the lower end of the connecting shaft member 24 is engaged with the locking projection 6 at the upper end of the drive shaft 3 of the motor 4. For example, in the case of a commercially available cooking mixer already possessed at home and in which the motor portion as a driving source can be separated, the lower surface of the single column portion 27 of the connecting shaft member 24 is attached to the motor. If the shape is such that it can be engaged with the connecting portion of the drive shaft, the upper and lower covers 8 and 9 can be used as they are by replacing them. Therefore, it is not necessary to purchase a drive source, and accordingly, the purchase cost can be reduced and the cost can be easily obtained.

[0026]

As described above, in the automatic milling machine according to the present invention, the upper mill is fixed so as not to rotate, the lower mill is rotatably supported by the drive source, and the upper mill is appropriately lowered by a resilient means. Since it is forcibly pressed against the mortar, a load greater than the weight of the upper mortar is applied, and the weight of the upper and lower mortars can be reduced and the weight can be reduced. This also facilitates handling.

The upper surface of the lower mill is formed as a conical convex portion, and the lower surface of the upper mill is formed as a conical concave portion opposed thereto. Since the plurality of linear grooves that move toward the outer peripheral edge are formed, the milled powder that is ground with the rotation of the lower mill is easily discharged to the outer peripheral edge, thereby improving productivity.

At this time, if the contact pressure of the resilient means can be freely and strongly converted, an appropriate contact pressure suitable for the type of grain can be set, and the grinding condition is always good.

Further, if the drive source is separable and an existing drive source can be used, for example, it can be used by using a motor such as a cooking mixer that is commercially available and used at home. This is not only very convenient because it is expanded, but also has the effect of reducing the economic burden on the user.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an automatic flour mill according to the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a longitudinal sectional view of the main part.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

[Explanation of symbols]

Reference Signs List 4 drive source (motor) 30, 31a to 31c reduction means (spur gear) 32a, 32b reduction means (small spur gear) 36 lower mill 37 upper mill 38 conical convex part 39 linear groove 44 conical concave part 45 linear groove 57 Resilient means (compression coil spring)

Claims (4)

[Claims] 1. An upper mill and a lower mill whose lower surface and upper surface are in sliding contact with each other are coaxially arranged, the upper mill is fixed so as not to rotate, and the lower mill is rotatable by a drive source via a speed reduction means. , And the upper mill is forcibly pressed against the lower mill by a suitable resilient means. 2. An upper mill and a lower mill in which a lower surface and an upper surface are in sliding contact with each other are coaxially arranged, the upper mill is fixed so as not to rotate, and the lower mill is rotatable by a drive source via a speed reduction means. The upper surface of the lower mill is formed in a conical convex portion, and the lower surface of the upper mill is formed in a conical concave portion facing the conical convex portion. A plurality of linear grooves are provided in which the cross section moves radially and moves to the outer peripheral edge side with the rotation of the lower mill, and the upper mill is forcibly pressed against the lower mill by a suitable resilient means. Automatic milling machine. 3. The automatic flour mill according to claim 1, wherein the contact pressure of the resilient means can be freely changed. 4. The automatic milling machine according to claim 1, wherein the driving source is separable and an existing driving source can be used.