JPH01235535A - Screw type kneading and extruding machine - Google Patents

Abstract

PURPOSE:To provide a small screw type kneading and extruding machine excellent in the kneading efficiency of raw materials, etc., by disposing two helical screw blades cooperatively kneading and transferring the raw materials in a housing. CONSTITUTION:The first rotatable screw shaft 31 is disposed in a cylindrical and top end-opened housing 19 along the axis line of the housing 19 and the first helical screw blade 33 is disposed on the peripheral surface of the first screw shaft 31 so as to reduce the height and pitch of the first screw blade from the base end portion of the screw shaft toward the top end portion thereof. In addition, the second rotatable screw shaft 34 is disposed only in the base end portion region of the first screw shaft 31 in the reverse direction against the first screw shaft 31. To the second screw shaft 34 the second helical screw blade 36 is attached. Raw materials are charged from a charging opening 25 and kneaded and transferred by the cooperative action of the first and second screw blades 33 and 36, followed by extruding the kneaded and transferred raw materials from an extruding portion.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a screw-type mixed wire extruder for kneading and extruding raw materials, and in particular, to udon noodles.

This invention relates to a screw type kneading extruder for home use suitable for kneading and molding noodles such as buckwheat noodles.

``Prior Art'' As an apparatus for kneading and molding noodles such as udon and soba, for example, an extrusion screw apparatus disclosed in JP-A-62-55038 is known.

This extrusion screw device has a screw shaft rotatably arranged in a housing having an open end, and the screw shaft is provided with a spiral screw blade. As the screw blade rotates, it kneads the raw materials for making udon noodles supplied into the housing, that is, a mixture of flour and water, and transfers it toward the opening at the tip of the housing. The mixture will be extruded into a noodle shape from a molding member (die) attached to the tip opening.

Further, in the above-mentioned extrusion screw device, the pitch and height of the screw blades are made smaller toward the tip opening of the housing, that is, toward the molded member. By using screw blades with varying pitch and height in this way, it is possible not only to mix the mixture well in the areas of the screw blades where the pitch and height are large, but also to mix the mixture in this way. As the pitch and height of the screw blades gradually decrease, the mixture reaches the molding member while being appropriately pressurized, and as it passes through the molding member, the mixture is molded into the desired noodle shape. be able to.

"Problems to be Solved by the Invention" The above-mentioned known extrusion screw apparatus is suitable for so-called commercial use, and therefore needs to knead a large amount of raw materials. For this reason, the maximum diameter of the screw blades is large, and as a result, the dimensions of the extrusion screw device itself are also large.

By the way, when such an extrusion screw device is downsized and used for home use, it is not possible to knead the mixture well just by reducing the dimensions of each part of the extrusion screw device. There is also the problem that extrusion molding from a member cannot be carried out smoothly. It is thought that such a problem is caused by a reduction in the contact area of the screw blade with the mixture, that is, the effective crosstalk area, due to the small size of the screw blade.

``Object of the Invention'' This invention was made based on two consecutive circumstances, and its purpose is to achieve a compact size suitable for home use, and at the same time, to achieve a sufficient kneading effect. The object of the present invention is to provide a screw-type mixed-wire extruder that can ensure high performance.

"Means for Solving the Problems" According to the screw type kneading extruder of the present invention, a first screw blade similar to the screw blade of the above-mentioned extrusion screw device is disposed in the housing, while
Only in the proximal region of this first screw blade, this first
A spiral second screw blade is disposed in parallel with the screw blade and cooperates with the first screw blade to knead and transfer the raw materials.

"Function" According to the screw type mixed wire extruder of the present invention, by supplying the mixture between the first and second screw blades, the raw material is kneaded by the rotation of the first and second screw blades, and This kneaded raw material is initially transferred by the cooperation of the first and second screw blades, but later is transferred to the tip of the housing only by the first screw blade, and is then transferred to the tip of the housing by the first screw blade alone. The molded member is then extruded while being molded under a predetermined pressure.

"Embodiment" An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

First, referring to FIG. 2, there is shown a noodle making machine in which the screw type mixed wire extruder of the present invention is applied to making noodles such as udon and soba noodles.

The noodle making machine includes a base 1, on which a box-shaped motor case 2 is attached.

An electric motor 3 is fixedly disposed in the motor case 2, and the output f[lI 4 of the electric motor 3 is
As shown in FIG. 2, it protrudes to the outside of the motor case 2.

A pair of support legs 5a are provided on the motor case 2.

A drive unit 6 is attached via 5b. This drive unit 6 includes a unit case 7.

The unit case 7 is open at one end on the output shaft 4 side of the electric motor 3, and has flanges 7a and 7b protruding radially outward at both ends thereof. An end plate 8 is attached to one flange portion 7a with a plurality of bolts (not shown).
The open end of the unit case 7 is closed. Here, one support leg 5a that supports the drive unit 6 is connected to the end plate 8, and the other support leg 5b is connected to the other flange portion 7b of the unit case 7 via a plurality of bolts (not shown). connected.

A main shaft 9 consisting of a stepped shaft is arranged within the unit chief. One end of the main shaft 9 passes through the end plate 8 and extends to the outside, and the other end passes through the end wall of the unit case 7 and is exposed on the outer surface of this end wall. The main shaft 9 is rotatably supported by the end plate 8 and the end wall.

A sprocket 10 is attached to one end of the main shaft 9 protruding from the drive unit 6 and to each of the output shaft 4 of the electric motor 3 described above, and a drive chain 11 is spanned between these sprockets 10. There is. Therefore, when the electric motor 3 is driven, this driving force is transmitted to the main shaft 9 via the drive chain 11 and the sprocket 10, so that the main shaft 9 is driven in one direction, that is, with the main shaft 9 facing the drive chain 11. When viewed from the side, it is rotated counterclockwise.

On the other hand, the other end of the main shaft 9 has a mounting hole 1 with a predetermined depth.
For example, four key grooves (not shown) are formed on the inner peripheral surface of the mounting hole 12 at equal intervals in the circumferential direction. Furthermore, the other end of the main shaft 9, that is, the open end, protrudes from the end surface of the unit case 7,
In addition, a seat portion 13 having a larger diameter than this open end is formed.

Further, as shown in FIG. 2, a keyway 14 is formed in the medium diameter shaft portion of the main shaft 9 along the axial direction. A spur gear 15a is attached to the medium-diameter shaft portion via a key (not shown) so as to come into contact with the large-diameter shaft portion of the main shaft 9. Further, the spur gear 15 is supported by a support ring 17 via a thrust bearing 16, and this support ring 17 is supported by an end plate 8 via a bearing retaining ring 18.
is supported by

As part of the unit case 6 is shown in FIG. 1, a subshaft 18 is arranged parallel to the main shaft, and this subshaft 18 is also rotatably supported by the unit case 6. has been done. The subshaft 18 has the same shape as the main shaft 1, except that one end thereof does not protrude from the unit case 6. Therefore, parts having the same function as the main shaft 9 are designated by the same reference numerals. Therefore, the explanation will be omitted.

A spur gear 15b that is paired with the spur gear 15a of the main shaft 9 is attached to the countershaft 18, and these spur gears 15a, 15
b are intermeshed with each other. Therefore, when the main shaft 9 is rotated, the sub-shaft 18 is rotated synchronously in a direction opposite to the direction of rotation of the main shaft 9. In FIG. 1, the support structure for the spur gear 15b is not shown because it is the same structure as the support structure for the spur gear 15a described above. Moreover, the broken line shown in FIG. 1 represents a cover.

A kneading housing 19 is attached to the flange portion 7b of the unit case 6. In this embodiment, the kneading housing 19 is comprised of a first barrel 20 and a second barrel 21 in order from the drive unit 6 side. A flange portion 20a is formed at one end of the first barrel 20, so that the first barrel 20 has a flange portion 20a.
a is removably connected to the flange portion 7b of the unit case 7 via a plurality of bolts 22. In FIG. 1, only one bolt 22 is shown.

A circular first barrel hole 23 is formed in the first barrel 20 and is coaxial with the axis of the main shaft 9.
A second barrel hole 24 having the same diameter as the first barrel hole 23 is formed coaxially with the axis of the first barrel hole 23 . As shown in FIG. 1, the first barrel hole 23 penetrates the first barrel 20, however, the second barrel hole 24 opens at the end surface of the first barrel 20 on the flange portion 2Oa side. , and a hole having a predetermined depth, the first barrel hole 23
It's not penetrated like that. Furthermore, as is clear from FIG. 1, the first and second barrel holes 23, 24 partially overlap along the axial direction.

An inlet 25 for the mixture to be kneaded is formed in the upper part of the first barrel 20, and this inlet 25 includes:
A hopper 26 is installed.

As is clear from FIG. 1, a collar portion 27 having a large diameter and coaxial with the first barrel hole 23 is integrally projected from the end surface of the first barrel 20 on the side opposite to the unit case 7. A female threaded portion 28 is formed on the inner peripheral portion of this collar portion 27, and the aforementioned second barrel 21 is screwed into this female threaded portion 28.

That is, the second barrel 21 has a tapered cylindrical shape, and a male threaded portion 29 that can be screwed into the female threaded portion 28 projects integrally from one end surface thereof, that is, the end surface on the large diameter side. Therefore, the second barrel 21 is removably connected to the first barrel 20 by screwing its male threaded portion 29 into the female threaded portion 28 of the first barrel 20 .

Inside the first barrel 20, there is an n
The barrel extension hole 30 is coaxial with the first barrel hole 23.
is formed through it. One end of the barrel extension hole 30 on the first barrel hole 23 side is connected to the first barrel hole 23.
It has the same diameter dimension as 3, and the barrel extension hole 3
0 has a tapered hole 30a whose diameter gradually decreases within a predetermined length region from the - end, and continues to this taper hole 30a, and has the same diameter up to the other end, that is, the tip. It is a small diameter hole portion 30b.

The first screw shaft 31 is disposed within the kneading housing 19 described above. One end of the first screw shaft 31 has a diameter that allows it to be fitted into the blind hole 12 of the main shaft 9 described above, and each key of the mounting hole 12 can be fitted to the outer peripheral surface of this one end. A key 31a is attached. These keys 31a may be integrally formed on the outer peripheral surface of one end of the first screw shaft 31. Therefore,
The first screw shaft 31 is removably mounted on the main shaft 9 by inserting its one end into the mounting hole 12 of the main shaft 9, and is rotatable integrally with the main shaft 9. . The first screw shaft 31 extends from the first barrel hole 23 into the extended barrel hole 30, and further extends concentrically to the vicinity of the tip of the extended barrel hole 30. Further, at one end, that is, the base end of the first screw shaft 31, an enlarged diameter portion 3 that comes into contact with the seat 13 of the mounting hole 12 described above is provided.
2 is formed.

A first screw blade 33 is provided on the outer peripheral surface of the first screw shaft 31. The first screw blade 33 extends from the enlarged diameter portion 32 to the first screw shaft 31.
It is formed in a spiral shape over the tip. More specifically, in this embodiment, the first screw blade 33 is
The first screw blade 33 is divided into three parts located inside the first barrel hole 23, inside the tapered hole 30a, and inside the small diameter hole 30b. The height of the blade is set to be approximately the same as the radius of the hole.

The height of the first screw blade 33 located within the tapered hole 30a is lowered toward the small diameter hole 30b in accordance with the diameter reduction of the tapered hole 30.

On the other hand, in terms of the blade pitch in the first screw blade 33, the blade pitch in the portions located inside the first barrel hole 23 and inside the small diameter hole portion 30b is constant; The blade pitch is small diameter hole 3
It is set to be longer than the blade pitch within 0b. The blade pitch in the tapered hole portion 30a is set to gradually become shorter from the first barrel hole 23 side toward the small diameter hole portion 30b side.

In the above-described embodiment, the first screw blade 33 is divided into three sections having different blade pitches and blade heights. , the blade pitch and blade height of the first screw blade 33 may be gradually decreased without providing divisions. Further, although the first screw shaft 31 is illustrated so that its diameter gradually decreases from its base end to its distal end, the first screw shaft 31 is They may have the same diameter.

Furthermore, a second screw shaft 34 is disposed within the second barrel hole 24 in the first barrel 20 . One end, that is, the base end of this second screw shaft 34 has the same shape as the base end of the first screw shaft 31 with respect to the mounting hole 12 in the subshaft 18, and this base end also has a shape similar to that of the base end of the first screw shaft 31. , a key to be fitted into the keyway of the mounting hole 12 and an enlarged diameter portion 35 are provided. Therefore, the second screw shaft 34 is also removably mounted in the mounting hole 12 of the subshaft 18, and is rotatable together with the subshaft 18. Here, the second screw shaft 34 is different from the first screw shaft 31 in that its tip portion is in sliding contact with the end wall of the second barrel hole 24 .

A second screw blade 36 is provided on the outer peripheral surface of the second screw shaft 34 . This second screw blade 36
is formed in a spiral shape extending from the enlarged diameter portion 35 of the second screw shaft 34 to its tip. The second screw blade 36 has the same blade pitch and blade height as the first barrel hole 23 in the first screw blade 33, and is adapted to mesh with the first screw blade 33.

On the other hand, an annular notch is formed in the inner peripheral edge of the tip opening of the second barrel 21, and a molded member 37 serving as an extruded part is fitted into this notch.

A plurality of molding holes 38 are formed through the molding member 37, and the shape of these molding holes 38 is, for example, a square in this embodiment. In addition, the molding hole 38
The size and number of can be set as appropriate.

The molded member 37 is fixed to the tip of the second barrel 21 by a retaining nut 39. That is, the second barrel 21
A male threaded portion 40 is formed on the outer circumferential surface of the tip portion of the
By screwing the retaining nut 39 into this male threaded portion 40, the molded member 37 is attached to the second barrel 21 and the retaining nut 3.
It is held between 9 and 9.

Next, the operation of the above-mentioned noodle making machine will be explained.

First, when the electric motor 3 is driven, as described above, the main shaft 9 and the subshaft 18 are rotated in opposite directions, and at the same time, the first and second shafts connected to the main shaft 9 and the subshaft 18 are rotated. The two screw shafts 31, 34, ie the first and second screw blades 33,36, are also rotated in opposite directions.

Here, these first and second screw blades 33°36
is rotated so that the blade surfaces of the first and second screw blades 33, 36 are sucked into their meshing portions when viewed from the hopper 26.

In this state, raw materials for udon and soba noodles, that is, a mixture of flour, water, etc., are charged from the hopper 26. Here, this mixture is flour containing a predetermined amount of water almost uniformly, and has such fluidity that it falls from the hopper 26 toward the input port 25, that is, into the first barrel 20. This is what we are doing.

When the mixture is supplied into the first barrel 20, this mixture is kneaded by the rotation of the first and second screw blades 33, 36, and while being kneaded, the mixture is fed into the first barrel 20 from inside the first barrel 20. 2 into the barrel 21. In the taper hole 30a of the second barrel 21, the pitch and height of the first screw blades 33 are gradually reduced, so that the mixture is further kneaded and maintained at a predetermined pressure level. It is then pressurized to the point where it reaches the small diameter hole 30b of the second barrel 21. In this small diameter hole 30b, the first screw blade 33
Since the blade pitch and height of the blades are constant, the mixture is not further pressurized here, and the mixture reaches the molding member 37 only by further kneading. Since the mixture thus kneaded is pressurized to a constant pressure, it is extruded while being molded into a predetermined linear shape through the molding hole 38 of the molding member 37. Then, by cutting the noodles discharged from the molding member 37 into a predetermined length, normal noodles can be obtained.

According to the above-mentioned noodle making machine, the mixture supplied from the input port 25 is first kneaded by the first and second screw blades 33° 36 which are rotated so as to mesh with each other. Kneading can be performed reliably.

That is, since the second screw blade 36 is also used in addition to the first screw blade 33 for kneading, the contact area between the mixture and these screw blades 33, 36, that is, the effective crosstalk area can be increased (secured). , the mixture can be effectively kneaded.Moreover, since the passage cross-sectional area of the first barrel 20 is larger than the passage cross-sectional area of the first barrel 21, the mixture in the first barrel 20 can be kneaded effectively. A sufficient residence time can also be ensured, thereby making it possible to knead the mixture even better.

Further, the mixture kneaded in this way is further kneaded by the first screw blade 33, and is pressurized to a certain pressure and reaches the molding member 37.
The molding process using the molding member 37 can be performed stably, and noodles with a certain firmness can be obtained.

Furthermore, in the noodle-making machine of the present invention, since the second screw blade 36 is arranged in parallel only in a part of the first screw blade 33, that is, in the area of its base end, the entire noodle-making machine is It is possible to obtain a small noodle making machine suitable for home use without increasing the size.

Further, in the noodle making machine of this embodiment, not only is the mixing housing 19 removable from the drive unit 6, but the mixing housing 19 can be disassembled into the first and second barrels 20 and 21. 2. The molded member 37 can be removed from the first and second barrels 21.
Since the screw blades 33, 36 can also be removed from the drive unit 6, they can be easily cleaned after the noodle making operation.

This invention is not limited to the one embodiment described above, and various modifications are possible. For example, if the lower region of the second barrel 21 shown by the dashed line A in FIG. After kneading the raw materials, the raw materials can also be pureed. In this case, it goes without saying that the molded member 37 is replaced by a plug that closes the opening at the tip of the second barrel 21. The screw type kneading extruder of the present invention can be applied not only to udon and soba noodles but also to various types of noodles by changing the shape of the molding hole of the molding member 37, and can also be applied to products other than noodles that require mixing. It can be applied to various raw materials.

"Effects of the Invention" According to the present invention, not only the first screw blade having a spiral shape but also the base end region of the first screw blade are provided in parallel with the first screw blade. , and because a spiral second screw blade is arranged to knead and transfer the raw materials in cooperation with the first screw blade, these first and second screw blades can
The raw materials can be kneaded well. In addition, since the second screw blade is provided only in the base end region of the first screw blade, the overall size of the kneading extruder is not increased, allowing for small-sized mixed wire extrusion suitable for home use. You can get a chance.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 show one embodiment of the present invention.
The figure is a horizontal sectional view of a part of the screw-type kneading extruder, FIG. 2 is a vertical sectional view of the kneading extruder of FIG. 1, and FIG. 3 is a cross-sectional view of a housing showing a modification of the present invention. It is. 19... Interference housing, 25... Inlet, 31.
...First screw shaft, 33... First screw blade, 34... Second screw shaft, 36... Second screw blade, 37... Molded member.

Claims (1)

[Scope of Claims] A housing having a cylindrical shape and an open tip; an inlet formed on the outer surface of the proximal end of the housing into which raw materials are introduced; and a housing located below the inlet in the housing. and a first screw shaft arranged along the axis of the housing and rotatably driven; provided on the outer circumferential surface of the first screw shaft so that the height and pitch decrease from the base end toward the distal end; a spiral first screw blade that kneads and transfers the raw materials supplied into the housing from the input port toward the distal end of the housing by rotation of the first screw shaft; and an extrusion part for extruding the raw material in a predetermined state, and the extrusion part is arranged in parallel with the base end of the first screw shaft only in the base end region of the first screw shaft in the housing, and A second screw shaft is provided on the outer peripheral surface of the second screw shaft and is rotatable in the direction opposite to the first screw shaft. 1. A screw-type kneading extruder characterized in that it is equipped with a second spiral screw blade that works to knead and transport raw materials.