JP2015160417A - kneading extruder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a kneading extruder which can efficiently manufacture a high-quality finished product and can be easily maintained.SOLUTION: There is provided a kneading extruder 1 including: a hopper 2 having a charging port 2a through which raw material is charged; and a kneading extrusion part 6 which kneads the charged raw material and extrudes the raw material. The kneading extrusion part 6 includes in its one end 6a, a cylinder 7 in which a supply port 8a communicated with the charging port 2a is opened, and also includes; a roller 10 and a screw 11 arranged in parallel with each other inside the cylinder 7; and an extrusion port 13a in the other end 6b of the kneading extrusion part . The roller 10 has an even circumferential surface 10a in the circumferential direction and is arranged under the supply port 8a. A starting end of the screw 11 is located on the lateral side of the roller 10 and a terminal is located in the other end of the cylinder 7 and connected to the extrusion port 13a.

Description

  The present invention relates to a kneading extruder capable of kneading and extruding raw materials, and more particularly to a kneading extruder in which a roller and a screw are arranged in parallel inside a cylinder.

Conventionally, as a kneading extruder which kneads raw materials and additives such as foods and synthetic resins and extrudes them from an extrusion port, one having a single screw shaft has been used. However, there is a problem in that kneading is insufficient with a single screw shaft, and the extruded kneaded material becomes non-uniform.
Therefore, in order to solve such problems, in recent years, a technique relating to a kneading extruder equipped with a multi-screw has been developed, and an invention has already been disclosed in this regard.

Patent Document 1 discloses an invention relating to a kneading machine having a plurality of screw shafts arranged in parallel under the name “kneading machine”.
Hereinafter, the invention disclosed in Patent Document 1 will be described. In the invention relating to the kneading machine disclosed in Patent Document 1, a kneading part of a single screw shaft mounted in a cylindrical heating cylinder is formed by a multi-spindle spiral, and the screw of each strip is screwed every 360 degrees. Protrusions having substantially the same height as the flight height of the transfer section are provided, and a recess that is deepest at the center in the spiral direction is formed between the protrusions. The phase angle between the concave portions of the screw shafts is set to be an open angle obtained by dividing the coaxial circumference 360 degrees as viewed from the axial direction of the screw shaft by the number of multi-spiral spirals, and at least one side portion of the screw shaft In addition, another screw shaft formed in a spiral in the opposite direction to the screw shaft is arranged in parallel.
In the kneading machine having such characteristics, in the kneading part in which a plurality of screw shafts are arranged in parallel, the resin raw material and the kneaded product raw material, and the additive added thereto, the compression and extension action in the radial direction While the compression / extension action in the axial direction is repeatedly and continuously applied, the feeding action in the transfer direction is given by the side wall of the protrusion. For this reason, the additive is mixed while being reliably dispersed in the resin raw material and the kneaded product, and a sufficiently kneaded product is obtained at the transfer end of the kneading section.

Further, Patent Document 2 discloses an invention for continuously kneading a material having a pair of long screws arranged in parallel under the name of “biaxial kneading extruder”.
In the invention disclosed in Patent Document 2, long leads and short leads are alternately arranged along the axial direction in each of a pair of screws, and short leads are short leads in the long leads of each screw. Are arranged so that long leads face each other.
In the pair of screws configured as described above, the amount of movement differs depending on whether the lead is long or short, and thus it is possible to cause shearing and kneading of the material (rubber).

Japanese Patent Laid-Open No. 5-57725 JP 2004-237656 A

However, in the invention disclosed in Patent Document 1, for example, when a compressive and extending action is repeatedly and continuously applied to raw materials such as wheat of noodles, the formed gluten network fibers are cut and used as noodle bands. Loses my waist. On the other hand, when the viscosity of the raw material is high, the raw material sticks to each recess of the screw shaft, and it may be difficult to feed in the transfer direction. In addition, since it is necessary to mesh the plurality of protrusions with the adjacent recesses, adjustments such as disassembly / assembly during maintenance are complicated.
Similarly, in the invention disclosed in Patent Document 2, if the viscosity of the material is high, the material sticks to the inside of the screw regardless of the length of the lead, making it difficult to feed in the transfer direction. There was a problem that no change.

  The present invention has been made in response to such a conventional situation, and provides a kneading extruder that can efficiently produce a high-quality finished product and that can be easily maintained. Objective.

In order to achieve the above object, a kneading and extruding machine according to the first aspect of the present invention is a kneading and extruding machine comprising a hopper portion having a charging port for charging raw materials, and a kneading extrusion portion for kneading and extruding the charged raw materials. A kneading and extruding part, a cylinder having a supply port communicating with an input port at one end, a roller and a screw arranged in parallel with each other inside the cylinder, and an extrusion port at the other end, The roller has a uniform circumferential surface in the circumferential direction and is disposed below the supply port, and the screw is located at the side of the roller and at the end of the cylinder at the other end of the cylinder. It is connected.
In the kneading extruder having such a configuration, the raw material charged from the charging port of the hopper part is dropped toward the roller through the supply port of the cylinder. The raw materials are, for example, rice, wheat, potatoes, konjac and other powders, and water. Such raw materials are mixed by rotation of the roller, and kneaded by being mixed while receiving a compressive force by the peripheral surface of the roller when being conveyed along the peripheral surface of the roller. At this time, it is considered that the kneaded raw material has a network fiber structure of proteins such as gluten.

The kneaded raw materials are continuously transferred to a screw located on the side of the roller. The delivered raw material is uniformly kneaded by further including air by the rotation of the screw, and at the same time, is extruded toward the extrusion port. Also, if the rotation direction of the roller and the screw is the same, the raw material is more easily dispersed and present in the periphery of the roller and the screw, and is easily mixed uniformly. The required time (hereinafter referred to as “kneading time”) is shortened. However, as long as the raw material is conveyed toward the extrusion port by the screw, these rotational directions may be opposite to each other.
Moreover, a roller and a screw can be suitably replaced | exchanged for what has the diameter of a desired roller, the internal diameter of a screw blade | wing, an outer diameter, and a pitch. “The roller has a uniform circumferential surface in the circumferential direction” includes the case where the roller has a substantially uniform circumferential surface in the circumferential direction, for example, a plurality of fine grooves are provided on the circumferential surface of the roller. It is.

Next, the kneading extruder according to the invention described in claim 2 is the kneading extruder according to claim 1, wherein the roller is provided between the peripheral surface and the inner peripheral surface of the cylinder facing the peripheral surface. A gap capable of introducing the raw material supplied from is formed.
In the kneading extruder having such a configuration, in addition to the action of the invention of claim 1, a gap is formed between the peripheral surface of the roller and the inner peripheral surface of the cylinder facing the peripheral surface. The raw material is prevented from stagnating near the inner peripheral surface of the cylinder, and is continuously conveyed along the peripheral surface of the roller. Further, a higher compressive force can be applied to the raw material in the gap between the peripheral surface of the roller and the peripheral surface of the cylinder.

Furthermore, the kneading extruder according to the invention described in claim 3 is the kneading extruder according to claim 1 or 2, wherein the peripheral surface of the roller and the outer edge portion of the blade of the screw approach each other with a certain interval. It is characterized by that.
In the kneading extruder with such a configuration, in addition to the action of the invention of claim 1 or claim 2, by continuously feeding the raw material, the kneaded raw material is extruded from the peripheral surface of the roller, It is then scraped off by the outer edge of the rotating screw blades. Therefore, for example, it is prevented that the raw material with high viscosity remains attached to the peripheral surface of the roller. The constant interval is a desired interval, and means that the interval is constant in the axial direction of the rollers and screws arranged in parallel.

The kneading extruder according to the invention described in claim 4 is the kneading extruder according to any one of claims 1 to 3, wherein the cylinder is conveyed along the peripheral surface of the roller to the bottom thereof. A guide portion for guiding the raw material to be screwed is provided, and this guide portion is fitted into a boundary portion between the roller and the screw.
In the kneading extruder having such a configuration, in addition to the action of the invention according to any one of claims 1 to 3, the guide portion is fitted into the boundary portion between the roller and the screw. The raw material is prevented from stagnating below the boundary, and almost the entire amount of the raw material conveyed along the peripheral surface of the roller reaches the screw. In addition, as a guide part, the bottom part itself of a cylinder may be sufficient, and another member may be installed between a roller and a screw, and a cylinder.

Furthermore, the kneading extruder according to the invention described in claim 5 is the kneading extruder according to any one of claims 1 to 4, wherein the rotational speed of the roller is equal to or higher than the rotational speed of the screw. Features.
In the kneading extruder having such a configuration, in addition to the action of the invention according to any one of claims 1 to 4, the roller rotation speed is equal to or higher than the screw rotation speed. After mixing and kneading sufficiently by the material, it works to deliver to the screw, and the delivery of the raw material from the roller to the screw is also facilitated, and the raw material caught in the screw advances quickly and is pushed out from the extrusion port. It is. In addition, the rotational speed of a roller and a screw can be adjusted by changing the frequency etc. of alternating current power, for example by inverter control.

Subsequently, in the kneading extruder according to the invention described in claim 6, the kneading extruder according to any one of claims 1 to 5 is introduced into the cylinder from the inlet of the hopper portion. An introduction body for guiding the raw material to be supplied only to the peripheral surface side of the roller is provided.
In the kneading extruder having such a configuration, the introduction body is, for example, a plate-like member having a flat or curved smooth inclined surface, the upper end being fixed to the hopper portion or the cylinder supply port, and the lower end being One that extends above a gap provided between the peripheral surface of the roller and the inner peripheral surface of the cylinder is conceivable. That is, the introduction body is disposed at a position where the upper part of the screw can be covered. The lower end of the introduction body is provided close to the circumferential surface of the roller.
In the kneading and extruding machine having the above configuration, in addition to the action of the invention according to any one of claims 1 to 5, the input raw material is caused to slide the inclined surface of the introduction body on the peripheral surface of the slide-off roller. Fall. On the other hand, since the introduction body is disposed at a position where the upper part of the screw can be covered, the raw material is prevented from falling onto the screw.
Moreover, since the lower end of the introduction body is provided close to the peripheral surface of the roller, the raw material adhering to the peripheral surface is peeled off by the lower end, thereby preventing the rotation of the roller from being inhibited.

  According to the kneading and extruding machine according to claim 1 of the present invention, since raw materials are kneaded by rotation of a roller, for example, when producing a kneaded product containing noodles or fish containing wheat or starch, Sufficient elasticity due to starch is formed. Thereafter, when the raw material is delivered to the screw, it is possible to prevent the protein fiber structure from being excessively divided as compared with a kneading extruder including two or more screws. Moreover, since a roller and a screw can be appropriately replaced with a desired shape, an optimum shape can be selected for the object to be manufactured. Therefore, according to the kneading extruder according to the first aspect, it is possible to produce kneaded products such as high-quality noodles and seaweeds. In addition, in such a replacement, there is a case where adjustment of the meshing between the blades may be necessary in the case of a multi-shaft screw, but the work is simplified because it is not necessary in the kneading extruder described in the claims. Can do.

  According to the kneading extruder according to claim 2 of the present invention, in addition to the effect of the invention according to claim 1, the raw material is provided along the peripheral surface of the roller by providing a gap with the inner peripheral surface of the cylinder. Since the raw materials are continuously conveyed and the raw materials can be sufficiently kneaded in the gap, it is possible to prevent the kneading from becoming uneven even if the viscosity of the raw materials increases as a result of the kneading.

  According to the kneading extruder according to claim 3 of the present invention, in addition to the effect of the invention according to claim 1 or 2, efficient delivery of raw materials from the roller to the screw is enabled. In addition, since it is prevented that the raw material with high viscosity remains attached to the peripheral surface of the roller, the amount of raw material to be kneaded does not decrease between the start and end of rotation of the roller, Cleaning work after completion is also facilitated.

  According to the kneading extruder according to claim 4 of the present invention, in addition to the effect of the invention according to any one of claims 1 to 3, substantially the raw material conveyed along the circumferential surface of the roller. Since the total amount reaches the screw, the raw material can be efficiently transferred from the roller to the screw as in the third aspect of the invention, and the rotation of the roller can be prevented and the yield can be prevented from decreasing.

  According to the kneading extruder according to claim 5 of the present invention, in addition to the effect of the invention according to any one of claims 1 to 4, the raw material is quickly extruded from the extrusion port. A sufficiently kneaded raw material can be obtained continuously. Therefore, work efficiency can be improved.

  According to the kneading extruder according to claim 6 of the present invention, in addition to the effect of the invention according to any one of claims 1 to 5, the total amount of the raw material charged by the introducer is made by a screw. Prior to conveyance, the material can be first kneaded by a roller, and the kneaded raw material can be reliably conveyed from the roller to the screw. Further, since the raw material is not dropped directly on the screw, it is possible to prevent the kneading from being insufficient.

(A) is a top view of the kneading extruder which concerns on an Example, (b) is an A line arrow directional view in (a). (A) And (b) is an exploded view of the kneading extruder which concerns on an Example. It is a top view of the kneading extrusion part which constitutes the kneading extrusion machine concerning an example. FIG. 4 is a cross-sectional view taken along line B-B in FIG. 3. It is a top view of the kneading extrusion part which constitutes the kneading extrusion machine concerning the modification of an example.

The kneading extruder according to the embodiment of the present invention will be described in detail with reference to FIGS. 1 and 5. Fig.1 (a) is a top view of the kneading extruder based on an Example, FIG.1 (b) is an A line arrow directional view in Fig.1 (a).
As shown in FIGS. 1 (a) and 1 (b), the kneading extruder 1 of the present embodiment kneads the input raw material and the hopper 2 having the input port 2a and the inclined surface 2b for inputting the raw material. And a kneading and extruding section 6 for extruding together. The kneading extruder 1 is driven by being connected to the drive unit 3, and the drive unit 3 is driven by receiving power supply from an AC power source 5 a built in the control unit 5.
The kneading and extruding unit 6 includes a cylinder 7 having a supply port 8a communicating with the charging port 2a at one end 6a, a roller 10 and a screw 11, and an extrusion cap 13 having an extrusion port 13a opening at the other end 6b.
The cylinder 7 includes a box-shaped portion 8 provided with a supply port 8a and a cylindrical portion 9 connected to the box-shaped portion 8. Moreover, both the roller 10 and the screw 11 are made of stainless steel, and are arranged in parallel with each other inside the box-shaped portion 8.

More specifically, the roller 10 includes a circumferential surface 10a that is uniform in the circumferential direction, and is disposed below the supply port 8a. The screw 11 has a start end positioned on the side of the roller 10 and a terminal end of the cylindrical portion 9. Located at the other end and connected to the extrusion port 13a. That is, the screw 11 is longer than the roller 10.
As an example of a specific size, the length and diameter of the roller 10 are 290 mm and 75 mm, respectively, and the length of the screw 11, the outer diameter and inner diameter of the blade, the pitch and thickness of the blade are, for example, 495 mm and 100 mm, respectively. And dimensions such as 73 mm, 70 mm and 3 mm can be employed. Accordingly, the blade depth represented by (outer diameter−inner diameter) / 2 is 13.5 mm. The extrusion port 13a has a tapered shape, and the minimum diameter at the end is 40 mm.
The diameter of the roller 10 is selected in consideration of the kneading time. Furthermore, when the depth (height) of the blades of the screw 11 is deep, the raw material may stagnate in the blades, and when the blade pitch (interval) is large, the pulsation of the raw materials may increase. Therefore, the blade depth and pitch are selected in consideration of these possibilities.
The roller 10 and the screw 11 are detachably connected to the rotary shafts 14 and 15, respectively. Pulleys 14a and 15a are attached to the respective ends of the rotary shafts 14 and 15, and are connected to the pulleys 16a and 17a of the motors 4a and 4b via chains 18a and 19a, respectively. Therefore, the roller 10 and the screw 11 can rotate independently by driving the motors 4a and 4b.

  Further, as shown in FIG. 1B, the motors 4a and 4b are independently connected to the AC power source 5a via independent inverters 5b and 5c built in the control unit 5. The frequency supplied to the motors 4a and 4b is controlled by the inverters 5b and 5c, and the rotational speeds of the roller 10 and the screw 11 are adjusted. The inverters 5b and 5c are controlled by operating the operation panel 5d of the control unit 5.

Furthermore, the kneading extruder 1 will be described in detail with reference to FIG. FIG. 2A and FIG. 2B are exploded views of the kneading extruder according to the example. In addition, about the component shown in FIG. 1, the same code | symbol is attached | subjected also in FIG. 2, and the description is abbreviate | omitted. Further, the roller center axis lines a1 and a2 are aligned with each other, and the screw center axis lines b1 and b2 are also aligned with each other.
As shown in FIGS. 2A and 2B, in the kneading extruder 1 according to the present embodiment, the rotating shafts 14 and 15, the cylinder 7, the roller 10, the screw 11, and the extrusion cap 13. Can be disassembled and assembled. Among these, the joining part 7a of the cylinder 7 is attached to the drive part 3 at the time of an assembly. Further, the rotating shaft 14 is inserted into the fixing member 10b constituting the inner layer of the peripheral surface 10a of the roller 10 and screwed (not shown). Then, the rotary shaft 15 is inserted into a fixing member 11b in which the blades 12 of the screw 11 are provided in a spiral shape, and fixed with screws (not shown).

Next, the kneading and extruding unit 6 will be described in detail with reference to FIG. FIG. 3 is a plan view of a kneading and extruding portion constituting the kneading extruder according to the example. 1 and 2 are denoted by the same reference numerals in FIG. 3 and description thereof is omitted.
As shown in FIG. 3, in the kneading and extruding unit 6, the raw material supplied from the supply port 8 a can be introduced between the peripheral surface 10 a of the roller 10 and the inner peripheral surface 8 b of the box-shaped part 8 facing this. A gap c1 is formed. Further, the peripheral surface 10a and the outer edge portion 12a of the blade 12 of the screw 11 approach each other with a gap c2. The gaps c1 and c2 are both about 15 mm. A space 11c adjacent to the gap c2 and surrounded by the peripheral surfaces of the blades 12 and 12 and the fixing member 11b is formed.
The roller 10 rotates in the d1 direction around the roller center axis a1, and the screw 11 rotates in the d2 direction around the screw center axis b1. At this time, the rotation speed of the roller 10 is equal to or higher than the rotation speed of the screw 11.

And the structure of the hopper part 2 and the box-shaped part 8 which comprise the kneading extruder based on an Example is demonstrated in detail, using FIG. 4 is a cross-sectional view taken along line BB in FIG. The constituent elements shown in FIGS. 1 to 3 are denoted by the same reference numerals in FIG. 4 and the description thereof is omitted.
As shown in FIG. 4, the introduction body that guides the raw material charged from the charging port 2 a to the peripheral surface 10 a side of the roller 10 from the inclined surface 2 b of the hopper 2 to the inside of the box-shaped portion 8. 20 is provided.
The introduction body 20 is a flat plate-like member having a sliding surface 20a. The upper end 20b is fixed to the inclined surface 2b of the hopper 2 and the lower end 20c extends near the gap c2. That is, the introduction body 20 is disposed at a position where the upper part of the screw 11 can be covered. Further, the lower end 20c is provided with an interval of about 5 mm with respect to the peripheral surface 10a. In addition, this space | interval is variable in the range of 1-15 mm.

Moreover, the box-shaped part 8 is provided with the guide part 21 from the inner peripheral surface 8b to the bottom part 8c. This guide part 21 is for guiding the raw material conveyed along rotation of the peripheral surface 10a in the d1 direction to the screw 11.
The guide portion 21 is recessed along the circumferential surface 10a and the outer edge portion 12a while maintaining the intervals e1 and e2, respectively, and to the boundary between the roller 10 and the screw 11 between the recess 21a and the recess 21b. A fitting portion 21c to be fitted is provided. The intervals e1 and e2 are both about 10 mm.

Next, the operation of the kneading extruder 1 according to the example will be described in detail.
As shown in FIG. 4, the raw material input from the input port 2 a falls on the sliding surface 20 a of the introduction body 20 onto the peripheral surface 10 a of the sliding roller 10 (arrow f <b> 1). The dropped raw material moves in the d1 direction along the peripheral surface 10a by the rotation of the roller 10, and is introduced into the gap c1 (arrow f2). Further, since the introduction body 20 is disposed at a position where the upper portion of the screw 11 can be covered, the raw material is prevented from dropping directly onto the screw 11.
The raw material introduced into the gap c1 is conveyed in the direction indicated by the arrow f3 while reaching the gap c2. The conveyed raw material is kneaded while being sandwiched between the peripheral surface 10a and the recess 21a and receiving a compressive force.
Next, the kneaded raw material is guided by the fitting portion 21c and reaches the gap c2. At this time, a part crosses over the insertion part 21c (arrow f4), but the rest reaches the lower end 20c of the introduction body 20 without crossing over the insertion part 21c (arrow f7).
In addition to the roller 10 and the screw 11 rotating in the same direction, the raw material that has climbed over the insertion portion 21c is rotated with the peripheral surface 10a and the outer edge portion 12a approaching each other with a gap c2 therebetween. It is scraped efficiently by the part 12a. Further, the scraped raw material is pushed into the interval e2 formed between the outer edge portion 12a and the recess 21b (arrow f5), and then pushed into the space 11c formed by the blade 12 and the blade 12 (see FIG. 3). It is.

Since the blades 12 are formed in a spiral shape, the raw material pushed into the space 11c is rotated by the rotation shaft 15 around the rotation shaft 15 and moved in the direction of the extrusion port 13a (see FIG. 3). Move forward a minute. Therefore, the arrow f6 indicates the direction in which the raw material that is transported away by one pitch backward of the blade 12 flows. When the raw material along the arrow f6 collides with the raw material newly conveyed along the arrow f3, mixing of the raw materials is promoted, and the flow of the raw material conveyed along the arrow f3 is described above. Changes to the arrow f4. That is, when the roller 10 and the screw 11 rotate in the same direction, the raw material kneaded by the peripheral surface 10a and the concave portion 21a of the roller 10 acts so as to be delivered to the screw 11 in the gap c2, so that the raw material is a box Since kneading can be performed while uniformly dispersing inside the shaped portion 8, the efficiency of kneading can be increased.
Of course, the roller 10 and the screw 11 may rotate in different directions such as clockwise rotation and counterclockwise rotation, or reverse rotation thereof. However, as described above, the roller 10 and the screw 11 pass through the roller 10 and the screw 11 in the box-shaped portion 8. Since it is not easy to uniformly disperse and knead, it is considered not efficient, but it is not impossible.

On the other hand, the raw material that has been kneaded by the rotation of the roller 10 and has reached the lower end 20 c of the introduction body 20 is peeled off by the lower end 20 c as the roller 10 rotates. The stripped raw material receives the flow of the raw material indicated by the arrow f6, and its transport direction is reversed to be the same as that of the arrow f4 (arrow f7). Thereafter, the raw material passes through the interval e2 and is transported in the direction of the arrow f5. .
Since the raw materials kneaded by the roller 10 are kneaded also at the locations indicated by the arrows f4 and f7, it is possible to perform sufficient kneading before being conveyed around the screw 11. Since the peripheral surface 10a of the roller 10 is formed in a cylindrical shape, the roller 10 is particularly good at applying a compressive force, and can exert a great effect in the work of kneading and kneading. Therefore, as compared with a kneader in which the screws are arranged in parallel, it is possible to share the role of mainly kneading in the roller portion and transferring in the axial direction in the screw portion. Moreover, if the kneading efficiency in the roller portion is high, the length can be shortened.
Therefore, it is possible to connect only the end of the screw 11 to the extrusion port 13 a of the extrusion cap 13 so that the axial length of the roller 10 is shorter than that of the screw 11.
In addition, although the space | interval of the lower end 20c of the introduction body 20 and the surrounding surface 10a of the roller 10 was 5 mm as above-mentioned in this Embodiment, peeling of the raw material by the lower end 20c is more by making this space | interval narrower. On the other hand, the raw material that comes out of the gap and is mixed with the newly introduced raw material and kneaded again by the roller 10 is reduced. Therefore, the distance between the lower end 20 c and the peripheral surface 10 a of the roller 10 may be determined in consideration of the degree of kneading by the roller 10.

The raw material conveyed in the direction of the arrow f5 is conveyed in the direction of the extrusion port 13a by the rotation of the blade 12, and finally becomes a finished product and is extruded from the extrusion port 13a.
In this way, the raw materials are charged and the rollers 10 and the screw 11 are continuously rotated, so that the kneaded raw materials are gradually conveyed inside the cylindrical portion 9 and finally pushed out from the extrusion port 13a. . In addition, when the rotational speed of the roller 10 is equal to or higher than the rotational speed of the screw 11, the delivery of the raw material from the arrow f3 to the arrow f5 is promoted, and the raw material is continuously pushed out. In addition, while conveying the inside of the cylindrical part 9, a raw material is knead | mixed more uniformly by containing air.

As described above, according to the kneading / extruding machine 1 according to the first embodiment, by providing the roller 10 and the screw 11, the raw material charged from the charging port 2 a of the hopper 2 is sufficiently kneaded, and this is stagnated. It can extrude continuously without.
More specifically, since the introduction body 20 and the gap c1 are provided, it is possible to introduce all the raw materials charged from the charging port 2a between the peripheral surface 10a of the roller 10 and the recess 21a of the guide portion 21 (interval e1). Is possible. Since this interval e1 is maintained at a constant interval, the raw materials can be kneaded and simultaneously conveyed to the gap c2. In addition, since the raw material does not fall directly onto the screw 11 by the introduction body 20, the raw material that has not been kneaded is not mixed into the kneaded raw material, and the occurrence of uneven kneading can be prevented.
In addition, since the raw material thrown in from the hopper 2 will be supplied to the upper surface of both the roller 10 and the screw 11 when the introduction body 20 is not provided, the raw material is kneaded around the roller 10. In addition to the above, there are some which are kneaded around the screw 11. Since kneading with the roller 10 is more efficient, there is a possibility that kneading may not be sufficient with the raw material charged on the screw 11. For example, as described above, the lower end portion 20 c of the introduction body 20 and the roller 10 may be used. It can be improved by opening the gap with the peripheral surface 10a so that the raw material once charged on the screw 11 side can be moved to the periphery on the roller 10 side.
As shown in FIG. 2, the rollers 10 having different diameters can be easily replaced, and the rotation speed can be changed on the operation panel 5d. Therefore, it is possible to appropriately adjust the length of the kneading time, thereby adding desired elasticity to the kneaded raw material.

Next, the kneaded raw material is scraped by the rotating outer edge portion 12a in the gap c2 and conveyed to the interval e2 by the lower end 20c of the introduction body 20, so that the raw material from the roller 10 to the screw 11 is transferred. Efficient delivery is possible.
When the raw material is delivered to the screw 11, the depth of the blade 12 represented by (outer diameter−inner diameter) / 2 is selected in consideration of the stagnation of the raw material. Can be prevented from sticking. Therefore, it is possible to avoid a decrease in yield at the extrusion port 13a and an increase in labor during cleaning. In addition, when cleaning the screw 11, as shown in FIG. 2, the operation | work which disassembles and assembles this is required. However, since the roller 10 and the screw 11 are disposed at a distance of the gap c2, adjustment such as meshing between the blades of the multiaxial screw is unnecessary.
In addition, the length, depth, pitch, and the like of the blades 12 of the screw 11 can be selected, and the rotation speed can be changed on the operation panel 5d. By selecting or adjusting these, for example, it is possible to prevent the fiber structure such as protein formed on the raw material kneaded by the roller 10 from being excessively divided, and at a desired ratio to the kneaded raw material. Air can be included.
As described above, according to the kneading extruder 1 according to the present embodiment, a high-quality finished product can be efficiently manufactured, and maintenance can be easily performed.

Next, a kneading extruder according to a modification of the present embodiment will be described with reference to FIG. FIG. 5 is a plan view of a kneading and extruding portion constituting a kneading and extruding machine according to a modification of the embodiment. 1 to 4 are denoted by the same reference numerals in FIG. 5 and description thereof is omitted.
As shown in FIG. 5, in the kneading and extruding unit 22 according to the modification of the embodiment, the screw 11 according to the embodiment is replaced with a screw 23 including a spiral blade 24 having a helical pitch shorter than that of the above-described embodiment. It has been done. The structure of the kneading extrusion part 22 other than this is the same as that of the kneading extrusion part 6 which concerns on an Example.
The pitch of the blades 24 of the screw 23 is 40 mm, which is shorter than the pitch (70 mm) in the screw 11 of the embodiment. Other configurations of the screw 23 are the same as those of the screw 11.

Next, operations and effects of the kneading extruder according to the modification of the embodiment will be described.
In the kneading extruder according to the modified example of the embodiment, since the pitch of the blades 24 is 40 mm, the pulsation in the course of conveying the raw material is smaller in the screw 23 than in the screw 11. On the other hand, the depth of the blade 24 represented by (outer diameter−inner diameter) / 2 is the same as that of the blade 12. Therefore, when the finished product conveyed by the screw 23 is rolled in a subsequent process, for example, it is possible to manufacture a dough having a uniform thickness more efficiently. Thus, according to the kneading extruder according to this modification, it is possible to manufacture a finished product that is in an optimum state for the subsequent processing steps.
Other than this, this modification also follows what has already been described in the description of the embodiment.

  Note that the structures of the kneading extruders 1 and 22 according to the present embodiment and its modifications are not limited to those described above. For example, the sizes of the roller 10 and the screw 11 and the gaps c1 and c2 and the intervals e1 and e2 can be appropriately adjusted in consideration of the composition of the raw materials and the elasticity of the finished product. Further, the guide portion 21 may be the bottom portion of the cylinder 7 itself, and the rotation direction d1 of the roller 10 and the rotation direction d2 of the screw 11 may be opposite to each other. Furthermore, the space | interval of the lower end 20c of the introduction body 20 and the surrounding surface 10a of the roller 10 may be other than 1-15 mm. In addition, timing belts and gears may be used instead of the chains 18a and 19a.

  INDUSTRIAL APPLICABILITY The present invention can be used as a kneading extruder capable of producing kneaded products such as noodle products and kamaboko and processed plastic products.

  DESCRIPTION OF SYMBOLS 1 ... Kneading extruder 2 ... Hopper 2a ... Loading port 2b ... Inclined surface 3 ... Drive part 4a, 4b ... Motor 5 ... Control part 5a ... AC power supply 5b, 5c ... Inverter 5d ... Operation panel 6 ... Kneading extrusion part 6a ... One end 6b ... The other end 7 ... Cylinder 7a ... Joining part 8 ... Box-like part 8a ... Supply port 8b ... Inner peripheral surface 8c ... Bottom part 9 ... Cylindrical part 10 ... Roller 10a ... Peripheral surface 10b ... Fixed member 11 ... Screw 11b ... Fixed member 11c ... Space 12 ... Blade 12a ... Outer edge 13 ... Extrusion cap 13a ... Extrusion port 14, 15 ... Rotating shaft 14a-17a ... Pulley 18a, 19a ... Chain 20 ... Introduced body 20a ... Sliding surface 20b ... Upper end 20c ... Lower end 21 ... Guide part 21a, 21b ... Concave part 21c ... Insertion part 22 ... Kneading extrusion part 23 ... Screw 24 ... Blade a , A2 ... roller center axis b1, b2 ... screw the central axis line

Claims (6)

A kneading extruder comprising: a hopper portion provided with a charging port for charging raw materials; and a kneading extrusion portion for kneading and extruding the charged raw materials,
The kneading and extruding part includes a cylinder having a supply port communicating with the charging port at one end, a roller and a screw arranged in parallel with each other inside the cylinder, and an extrusion port at the other end.
The roller is disposed below the supply port with a uniform circumferential surface in the circumferential direction,
The screw is a kneading and extruding machine characterized in that a start end is located on the side of the roller and a termination end is located on the other end of the cylinder and is connected to the extrusion port.   The roller is characterized in that a gap capable of introducing the raw material supplied from the supply port is formed between the peripheral surface and an inner peripheral surface of the cylinder facing the peripheral surface. The kneading extruder according to 1.   The kneading extruder according to claim 1 or 2, wherein the peripheral surface of the roller and an outer edge portion of the blade of the screw approach each other with a predetermined interval therebetween. The cylinder is provided with a guide portion for guiding the raw material conveyed along the peripheral surface of the roller to the screw at the bottom thereof,
The kneading extruder according to any one of claims 1 to 3, wherein the guide portion is fitted into a boundary portion between the roller and the screw.   The kneading extruder according to any one of claims 1 to 4, wherein a rotation speed of the roller is equal to or higher than a rotation speed of the screw.   The introduction body which guides so that the raw material thrown in from the slot of the hopper part may be supplied only to the peripheral surface side of the roller is provided in the inside of the cylinder. Item 6. The kneading extruder according to any one of Items 5.

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