MXPA97002169A

MXPA97002169A - System of temperature control and an extruder apparatus of packaging-mixing that has the system for the control of temperat

Info

Publication number: MXPA97002169A
Application number: MXPA/A/1997/002169A
Authority: MX
Inventors: Sato Takuya
Original assignee: Sato Iron Works Co Ltd
Filing date: 1997-03-20
Publication date: 1998-04-01

Abstract

The invention relates to a system for temperature control and also to a mixing-extruder extruder that implements the system for temperature control. Conventionally, in the soap making process, to restrict the temperature increase of the soap raw material, a cooling water conduit is provided around an outer periphery of a cylinder that constructs a transport section of the extruder apparatus, to cool the periphery and outside of the cylinder and consequently the material transported inside the cylinder. With this construction, the portion of the material present in the vicinity of the inner periphery of the cylinder can be cooled efficiently, while the other portion of material present adjacent to the center of the cylinder is not cooled efficiently. The system for controlling the temperature of the invention includes a flow conduit formed in a stationary disk provided in a kneading mechanism of the extruder and having a plurality of holes, a fluid supply means for supplying fluid adjusted in the temperature within the flow conduit and a means for controlling the temperature to adjust the temperature of the stationary disk to a desired target temperature. Therefore, when the transported material is passed through the stationary disk maintained at the desired temperature, this material can be cooled uniformly regardless of its location with respect to the radial direction inside the cylinder.

Description

TEMPERATURE CONTROL SYSTEM AND ANOTHER MIXING-EXTRUSION DEVICE THAT HAS THE SYSTEM FOR THE CONTROL OF TEMPERATURE TECHNICAL FIELD The present invention relates to a system for controlling the temperature for use in a kneading-mixing extruder apparatus for kneading and mixing chemical material, such as pieces of soap, various types of oils and fats or the like and then extruding the material in a predetermined form and the invention also relates to such an extruder mixing-kneading apparatus having the system for temperature control.

ANTECEDENTS OF THE TECHNIQUE It is well known, in the process of manufacturing such products as soap, that the temperature of this raw material (material to be processed) such as pieces of soap significantly affects the workability of this raw material, as well as the quality of the product. final product made from the material. In particular, it has been desired that the fabrication be effected under an optimum temperature condition through an appropriate adjustment of the heat generated by the friction associated with the compression and kneading / mixing of the soap raw material in the course of a step of Mixed / mixed. To implement such temperature control, in the case of the conventional kneading-extruder-mixing apparatus, a water conduit is provided coaxially around the outer periphery of a cylinder incorporating an extruder screw. With the supply of cooling water to the water pipe, the raw material mixed, mixed and transported by the extruder screw is cooled by heat exchange (heat conduction) with an inner surface of the cooled cylinder, thus preventing the temperature of the raw material rises above a predetermined level. In effect, the use of the system for the control of the conventional temperature described in the foregoing, the overheating of the raw material may be restricted to some extent, in comparison with the conventional one that does not use such a system. In practice, however, the cooling effect is limited to the portion of the kneaded and transported material, which makes contact with the inner peripheral surface of the cylinder, and the remaining material portion kneaded / mixed and transported in the vicinity of the center of the cylinder does not cool directly. And, this portion of material can be cooled only indirectly through its contact with the portion of material directly in contact with the surface of the cylinder. Observed along the cross section of the cylinder, the portion of material adjacent to the inner peripheral surface of the cylinder can be maintained at a relatively low temperature, due to the effect of the cooling water, while the other portion of material remains uncooled to be maintained at an elevated temperature. This irregularity of the temperature of the raw material in the radial direction of the cylinder leads to unevenness of the disadvantageous quality of the final product. In addition, some types of soap need to be manufactured at a constant temperature of 40-45 ° C, which is higher than the ambient temperature. In this case, on the contrary to the previous case, it is necessary to keep the material at a high temperature during manufacture. In this way, in place of the cooling water, the water passage placed around the outer periphery of the cylinder is supplied with heating water maintained at a high predetermined temperature to keep the material at this elevated temperature. In this case however, also the effect of raising the temperature is limited to the portion of the material located adjacent to the inner peripheral surface of the cylinder, while the remaining material portion located in the vicinity of the screw remains unheated to be left at a lower temperature. The present invention serves the state of the art described in the foregoing and its main purpose is to provide a system for controlling the temperature to restrict the irregularity of the temperature in the radial direction of the cylinder, a raw material present in an axial position predetermined cylinder and to provide a kneading-mixing extruder apparatus having this system for temperature control.

DESCRIPTION OF THE INVENTION To realize the object mentioned in the foregoing, a system for controlling the temperature according to the present invention comprises: a stationary disk that includes a flow conduit that extends from the vicinity of a center through the proximity of a periphery thereof defining an inlet opening and an outlet opening for the flow conduit; a fluid supply means communicated with the inner and outer openings for supplying the fluid in circulation; and a means for controlling the temperature to control the temperature of the stationary disk; wherein the stationary disk further defines a plurality of holes, which extend through the disk in the thickness thereof and which remain free of communication with the flow conduit. An extruder kneading-mixing apparatus using the system for controlling the above temperature, comprises: a receiving tank for receiving the raw material; a cylinder that incorporates a screw to extrude and transport the material inside the cylinder; a kneading-mixing mechanism placed along the length of the cylinder to knead and mix the material; and a molding mechanism positioned along the length of the cylinder to mold the material; the kneading-mixing mechanism includes a rotating disk, which can be rotated with the screw and a stationary disk fixed to the cylinder, the rotating disk and the stationary disk are placed side by side in an axial direction of the cylinder; the stationary disk includes a flow conduit extending from the vicinity of a center through the vicinity of its periphery and defining an inlet opening and an outlet opening for the flow conduit; and a temperature control system including fluid supply means communicated with the inlet and outlet openings for supplying circulating fluid and the temperature control means for controlling the temperature of the stationary disk. With the previous construction, when the raw material passes through the rotating disc and the stationary disc, the material is subjected to compression, cutting and shearing actions of the discs, in such a way that the temperature of the material increases more visibly in this stage. Still, in this step, the temperature of the material can be adjusted to an appropriate value by the system for controlling the temperature of the present invention. That is, when the material is passed through the plurality of holes of the stationary disk to be extruded therefrom, heat exchange is carried out from the inner periphery through the center of the cylinder due to the temperature difference between the stationary disk and the material. Therefore, temperature control can be effected much more efficiently "than in conventional apparatus. Accordingly, according to the above construction, since the heat exchange is carried out when the material comes into contact with the surfaces of the inner periphery of the plurality of holes of the stationary disk, this heat exchange is carried out substantially uniformly on the material, whether the material is present adjacent to the outer periphery or the inner periphery of the stationary disk. As a result, the construction of the present invention has solved the problem of the prior art of the local concentration of the heat exchange in the portion of the material transported in the vicinity of the inner periphery of the cylinder, while substantially no heat exchange occurs in the other portion of the material present in the vicinity of the screw. In addition, with the construction described above, since the plurality of holes are defined in the stationary disk, heat exchange occurs when the material makes contact with the stationary disc surface and also when the material passes along the stationary discs. peripheral peripheral surfaces of the respective holes defined in the disc. That is to say, the total sum of the surface area of the stationary disk and the surface areas of the peripheral inner surfaces of the holes, if their number is appropriately increased, may be greater than the total heat conducting surface area of the cooling water conduit of the prior art (with respect to the length of the unit along the axial direction of the cylinder). Therefore, in comparison with the conventional apparatus, the apparatus of the invention also increases the conductive heat, i.e. the exchangeable surface area of heat available for the material, such that the heat exchange can be effected in a further form. efficient. In addition, with the above construction, the system for temperature control comprises the flow conduit and the means for temperature control both included in the stationary disk. In this way, the system can be implemented by the improvement of an existing mixing-mixing mechanism. As a result, the complete system can be simpler than the conventional one by using the water conduit placed around the outer periphery of the cylinder, so that the costs of the complete apparatus can be reduced. Furthermore, this temperature control system can be used in combination with the conventional temperature control system for controlling the temperature of the outer periphery of the cylinder by means of the water conduit filled with the cooling or heating fluid. In this case, since the heat exchange effect obtained from the system for the conventional temperature control and that obtained from the system of the invention, are combined for the mutual increase, this combination system can effect the control of the temperature in even a more effective way. As a result, the temperature of the material process can be maintained within a predetermined range, whereby the workability of the material and the quality of the final product will be further improved. According to another aspect of the invention, the means for controlling the temperature includes a temperature sensor for measuring the temperature of the stationary disk, a temperature adjustment unit for adjusting a stationary disk temperature, a comparator unit for comparing the temperature measured by the temperature detector with the temperature set by a temperature adjustment unit, and an instruction unit for adjusting a pump flow rate, based on a temperature difference obtained from the comparison by the comparator unit. With this construction, the temperature of the stationary disk is adjusted or set to a predetermined temperature and this predetermined temperature is compared to a real disk temperature by the temperature sensor to produce a temperature difference. Then, based on this temperature difference, the flow velocity of the fluid circulating in the flow conduit incorporated in the fixed disk can be appropriately varied, to cause the actual temperature to equal the predetermined target temperature. In this way, an automatic temperature control of the stationary disk can be easily executed.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side view showing a complete kneading-mixing extruder apparatus, Figure 2 is a plan view showing the complete kneading-extruder apparatus, Figure 3 is a sectional view showing a portion of the mixing-kneading extruder apparatus, Figure 4 is an enlarged sectional view showing, in particular, a kneading-mixing mechanism of the kneading-mixing extruder apparatus, Figure 5 is a partial sectional view of the kneading mechanism. mixed, Figure 6 is an explanatory view showing a portion of a kneading-mixing extruder apparatus according to another embodiment, Figure 7 is an explanatory view showing a construction of a system for temperature control and control means of temperature thereof, Figure 8 is a cross section of the system for temperature control, Figure 9 is a block diagram illustrating the feedback control scheme Figure 10 is a perspective view showing a system for temperature control according to another embodiment, and Figure 11 is a cross-section of the system for the control of temperature. the temperature of another mode.

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the invention will now be described in detail with reference to the accompanying drawings. (1) Mixing Extruder-Mixing Apparatus A kneading-mixing extruder apparatus will be described as a typical apparatus in which a system for controlling the temperature of the invention is used. As shown in Figures 1-5, this apparatus includes a dosing device 1 for separately and continuously measuring a plurality of raw material classes, a receiving tank 2 for receiving the raw material 60 fed from the dosing device 1, a degassing tank 3, for degassing material 60, a mixing-conveying device 4 for transporting material 60, while kneading and mixing thereof and a molding mechanism 5 for molding the material 60 while extruding it. In addition, downstream of the terminal stage of this kneading-mixing extruder, an automatic cutting device 6 and an automatic embossing device 7 are provided in series as post-treatment devices for the extruded product. The dosing device 1 includes a first dosage unit 8 for measuring and feeding the main raw material and a second dosage unit 9 for measuring and feeding an additional material such as a flavoring agent, a coloring agent or the like, with these units. , 9 of dosing which are placed upwards of the receiving tank 2 to load the material 60, in relation to the direction of the feeding material. The receiving tank 2 includes a receiving hopper 10 which defines a mixing area for stirring and mixing the material 60. And, at the bottom of this hopper 10, a horizontal transport screw 11 is provided to extend through the bottom part in the direction from front to back. In such a way that the material 60 loaded in the tank 2 is stirred and mixed therein and then discharged in a forced way through a discharge opening from the bottom. The transport screw 11 receives power from a driving motor 12 positioned adjacent one end thereof upwardly in the transport direction of the material 60 and adjacent to the other end of the screw 11, the mixing-mixing mechanism 16 is provided, which is substantially the same as a kneading-mixing mechanism 16 provided in a kneading-mixing transportation device 4 which will be described later. In the operation, by the forced sending action of the transport screw 11, the material 60 is transported downwards so that it is passed to the kneading-mixing mechanism 16. Incidentally, the feed amount of the material 60 of the receiving tank 2 and the feed amount of the material 60 of the measuring device 1 are adjusted, such that a predetermined fixed amount of material 60 is always present in the receiving hopper 10 of the receiving tank 2. More particularly, a pair of level detectors 13 are placed inside the receiving hopper 10 to respectively detect the upper and lower limit levels of the material 60 present therein. And, the feed amount of the dosing device 1 is controlled by a controller not illustrated, such that the upper level of the material 60 is always present between the upper and lower limit levels. The degassing tank 3 includes a vacuum chamber 15 to provide a degassing area, where the material 60 is depressurized, so that it has its reduced air content in the course of conveying the material to the kneading-mixing transportation device 4. More particularly, the vacuum chamber 15 is communicated with a vacuum pump, not illustrated and also the portion of transport conduit from the receiving hopper 10 to the outlet opening of the transport screw 11 is closed by the presence of the material 60 in she. Therefore, the interior space of this vacuum chamber 15 can be used as a depressurized space and by maintaining this space under the depressurized condition, the material 60 present therein can be degassed. In addition, the vacuum chamber 15 includes an opening 15a provided in a virtual axial extension line of the screw 11 and a cover 14 is provided to open and close this opening 15a. Then, by opening this lid 14, various maintenance operations can be made easily through it, such as joining and separating operations of the screw shaft of the screw 11 or the kneading-mixing mechanism 16 located adjacent to the terminal end of the screw. As shown in Figures 1-4, the kneading-mixing transportation device 4 includes a pair of transport screws consisting of a first transport screw 17 placed on the upward side and a second transport screw 18 placed on the transport side. the downward side and the kneading-mixing mechanism 16 interposed between the first and second screws 17, 18. As they communicate with the vacuum chamber 15 formed in the bottom of the degassing tank 3, the interior of this device 4 of Mixed-mixed transport 4 is also maintained under the depressurized condition. Accordingly, the material 60 when transported by two transport screws 17, 18 is kept under the depressurized condition and is kneaded and mixed under this condition. The first and second transport screws 17, 18 respectively, include transport screw shafts 17A, 18A and cylinders 17B, 18B incorporating these screw shafts 17A, 18A. In this way, the mixing-kneading mechanism 16 is placed between the first axle screw 17A upwards and the second axle screw 18A downwards and between the cylinders 17B, 18B which incorporate these respective screw axes 17A, 18A. As shown in Figure 3, around the outer periphery of the cylinder 17B, a cooling water passage 170 is provided to cool the transported material. This cooling water conduit 170 is supplied with cooling water from an inlet opening represented by the reference numeral 171 and the water is discharged from an outlet opening represented by the number 172. More particularly, this cooling water conduit 170 extends in the spiral shape along the outer periphery of the cylinder 17B, such that the cooling water supplied from the inlet opening 171 circulates in the spiral shape along the outer periphery of the cylinder 17B, so cool this cylinder 17B. With this cooling of the cylinder, heat exchange is carried out between the cooled cylinder 17B and the hot material 60 carried inside the cylinder, in such a way that the material 60 is cooled. Similarly, a substantially equal cooling mechanism is provided around the outer periphery of the cylinder 18A. That is, this cooling mechanism includes an inlet opening 181 for the introduction of cooling water, a cooling water conduit 180 for circulating the introduced cooling water, and an outlet opening 182 for discharging the cooling water afterwards. of its circulation through the conduit 180. Incidentally, the devices for operating this cooling mechanism, ie a pump for feeding the cooling water to the inlet openings 171, 181, a tank for receiving and storing the discharged water from the outlet openings 172, 182 and a flow quantity controller for controlling the flow rate of the cooling water, may be provided outside the kneading-mixing extruder shown in Figures 2 and 3. Consequently, these devices do not They are shown in these figures. The cooling mechanisms described in the foregoing will be generically referred to herein as a device for controlling the temperature of the outer periphery of the cylinder. Now with reference to the screw passages of the transport screws 17, 18, the screw shaft 17A upwards has a pitch slightly larger than the screw axis 18A downwards. Then, by the force of an electric motor 19 shown, these screws are driven rotationally at about 5-30 rpm, by means of an appropriate reduction mechanism. The construction of the kneading mechanism 16 will be described below. The kneading mechanism 16 includes a plurality of kneading mechanisms 20 positioned one after the other, along the conveying direction of the material 60. Each unit of the kneading mechanism 20 includes a non-rotating stationary disc 21A, 21B, fixed to the respective cylinders 17B, 18B acting as outer housings of the kneading-mixing transport device 4 and a filter 23 interposed between the discs 21, 22. More particularly, as shown in Figures 3 and 4, each unit of the mixing mechanism kneading 20 includes the rotary disk 22 connected to the transport end of the first screw shaft 17A to rotate with this first screw axis 17A and which defines a plurality of through holes 22a extending through the direction of the screw axis , the stationary disk 21 fixedly positioned between the rotary disk 22 and the second screw axis 18A and facing the second screw axis 18A and defining a plurality of through holes 21a extending through in the axial direction of the screw, and filter 23 interposed between the above discs 21, 22. The number of the mechanism 20 of the kneading unit is not particularly limited. In the present embodiment, two of them are provided, such that the rotary disk 22A, the stationary disk 21B, the rotary disk 22B and the stationary disk 21A are placed one after the other in the order mentioned from the upward side in FIG. the direction of transport of the material. In addition, between the stationary disk 21B upwardly and the stationary disk 21A downwardly, an intermediate spacer ring 50 is positioned to provide a fixed axial clearance to allow rotation of the rotary disk 22B downwardly. In operation, as the material 60 is forcedly passed between the rotating disk 21 and the rotating disk 22 rotating relative to the stationary disk 21, a strong mixing and kneading force is applied to this material by the same Mixed and mixed. More particularly, each of the rotary disk 22 and the stationary disk 21 define the through holes 22a, 21a for the material 60 with the index of the orifice area of approximately 50%. In this way, when the material present in the first transport screw 17 is passed through these through holes 22a, 21a, the speed of passage of this material is increased up to about twice as high as the speed of passage of the material Within the first transport screw 17. Then, with this sudden increase in the speed of movement of the material, when pressed into the holes, a kneading action is applied to the material 60 through its own plastic deformation. The stationary disk 21 and the intermediate separator ring 50 each include a flow conduit as a part of the device 200 for controlling the temperature of the kneading mechanism as the system for controlling the temperature of this invention. The construction of this device will be described later. When the material 60 under the rotation of the rotating disk 22 is forcedly fed into the through holes 21a of the stationary disk 21, the material is subjected to the kneading action due to a shearing force generated between the discs 21, 22 that rotate in relation to each other. Further, between the discs 21, 22, the filter 23 is interposed having through-holes of a diameter sufficiently smaller than the through-holes 21a, 22a of these discs 21, 22. Consequently, the material 60 is also subjected to another action of kneading the filter to be finely dispersed throughout the course of the kneading operation described in the above. With these combined kneading actions, very fine and good kneading of the material becomes possible. Next, the device 200 for controlling the temperature of the kneading mechanism as the system for controlling the temperature of the present invention will be described. As shown in Figures 7 and 8, the device 200 for controlling the temperature of the kneading mechanism includes flow conduits 210 ("the first flow conduit" hereafter) and 211 ("the second flow conduit. "hereinafter") formed respectively on the stationary disk 21A downwards (which is also to be mentioned as the first stationary disk) and the stationary disk 21B upwards (which will also be referred to as the second stationary disk), flow conduits 212a, 212b, 213a, 213b, 214a, 214b extending horizontally for communication with the first flow conduit 210 and the second flow conduit 211 with each other, the flow conduits 210a, 210a ', 210b, 211a 211b extending in the substantially radial direction of the cylinder 17B, a pump 110 as the fluid supply means for supplying the cooling water to the above flow conduits, a conduit 101 for guiding the cooling water from the pump 110 to the flow conduit 210a and an additional conduit 102 for discharging the cooling water after its circulation through the respective flow conduits formed in the stationary discs 21A, 21B and the intermediate ring 50. Now, the Cooling water circulation circuitry will be described. First, the cooling water fed from the pump 110 is supplied via the conduit 101 to the inlet opening 210a of the stationary disk 21A. This water flows through the first flow conduit 210 to cool the stationary disk 21A and then flows through the flow conduits 210b, 212b, the flow conduit 213b of the intermediate ring 50, the flow conduits 214b, 211b of the disk stationary 21B upward and flowing into the second flow conduit 211. Then, the cooling water circulates through this second flow conduit 211 to cool the stationary disk 21 and then flows through the flow conduits 211a, 214a, the flow conduit 213a formed in the intermediate ring 50 and then in the flow conduits 212a, 210a1 of the stationary disk 21A and eventually flows into the discharge conduit 102 to be discharged into a tank (not shown). The first flow conduit 210 includes a discontinuous outer loop portion 210 that extends in the peripheral direction adjacent the outer peripheral surface of the stationary disk 21A, a portion of the discontinuous inner circuit 210 extending in the peripheral direction and radially inward of the outer circuit portion and two flow conduits 210s, 210s communicating with the outer circuit portion 210 OL and the inner circuit portion 210 IL with each other. With this, both of the inner peripheral portion and the outer peripheral portion of the stationary disk 21A can be cooled and the complete stationary disk 21A can be efficiently cooled to a predetermined desired temperature. As can be clearly understood from Figure 7, the second flow conduit 211 has a construction substantially identical to that of the first flow conduit 210. Therefore, the construction of this second flow conduit 211 will not be described. To form the first flow conduit 210 on the inner surface of the stationary disk 21A, as can be seen from Figure 8, first a slot 2100 having a predetermined depth is formed on the surface of the stationary disk 21A. Then a lid element 215 is preset in the slot 2100 over its entire length to cover the surface of this slot 2100. Then, the lid element 215 is welded to the stationary disk 21, thereby completing the flow conduit. The second flow conduit 211 can be formed in the same manner and the description of the method will not be described by repetition. Next, a means 300 for temperature control for controlling the temperature of the cooling water will be described with reference to Figure 9. The temperature control means 300 includes a temperature sensor 301 incorporated within the stationary disk 21A for measuring the temperature of this disk 21, a temperature adjustment unit 302 for setting a desired temperature of the stationary disk 21, a comparator unit 303 for comparing the temperature measured by the temperature sensor 301 with the temperature set by the temperature adjustment unit and an instruction unit 304 for generating an instruction to adjust a cooling water flow rate, based on a temperature difference obtained from the comparison by the comparator unit 303, by controlling an opening / closing degree of a control valve 100. In this regard, the instruction unit 304 controls the control valve 100 such that ayor difference between the measured temperature and the target temperature of the stationary disk 21, the greater the amount of cooling water flow fed from the pump 110 to correspondingly increase the flow velocity of the fluid circulating in the first and second flow conduits 210, 211. The fluid supply means includes the pump 110 and the control valve 100 whose degree of opening / closing is controllable. In addition, the pump 110 may incorporate the control valve 100. As shown in Figure 4, the first screw shaft 17A and the second screw shaft 18A are keyed together to be rotatable in unison; and also the first screw shaft 17A is also keyed with the rotary disk 22 upwards. The downwardly rotating disk 22 is fixedly connected to the first screw shaft 17A by means of a plurality of connecting screws 24. Between the two rotary disks 22, the screw shaft 17A is mounted on a separator 25 having through holes therein. from which the connecting screws 24 can be inserted. That is, the first screw shaft 17A, the two rotating discs 22 and the separator 25 are fixedly connected to each other for corotation by means of the connecting screws 24. The disc 21 is fixed to a housing 26 of the kneading mechanism 16, which comprises the connection between the first cylinder 17B incorporating the first screw axis 17A and the second cylinder 18B incorporating the second screw axis 18A. In addition, this stationary disk 21 rotatably supports the first screw shaft 17A by means of the bearing elements 27 made of resin and adapted in the separator. The filter 23, as shown in Figure 5, includes a disc mesh 28 having a mesh necessary for filtration of the raw material and a perforation plate 29 having a large number of holes smaller in diameter than the holes passages 21a, 22A of the discs 21, 22. Then, as shown in Figure 4, this filter 23 is fixedly positioned between the stationary disc 21, and the rotary disc 22. With this filter 23, the disc mesh 28 is it adjusts on the upward side in the conveying direction of the material 60 and the perforating plate 28 is adjusted to the rear side, in such a way that the mesh disc 28 can be reinforced in the event that the through holes 21a of the stationary disc 21 they are a little enlarged to avoid the clogging of the material. And, the filter together with the mesh disc 28 together constitute a filter medium for the raw material 60. The filter 23, with the disc mesh 28 which is placed on the up side in the conveying direction of the material 60 in With relation to the perforation plate 29, it is placed adjacent to the front surface of the stationary disk 23 with a space of approximately 0.5-3 mm from the rotary disk 22 upwards. The disc mesh 28 is formed of metallic material (for example stainless steel: JIS SUS 304) and its mesh in the order of # 20- # 50 is preferred for the kneading of the soap material. The perforation plate 29 is also formed of a similar metallic material (for example stainless steel: JIS SUS 304) and has a thickness of approximately 0.8-2.0 mm, an orifice diameter of approximately 0.5-2 mm and an area index of hole of approximately 25-50%. And, this perforation plate 29 and disc mesh 28 are integrally joined to each other through their respective peripheral edges joined by appropriate joining means such as welding. The details identified in the above of the mesh screen 28 and the thickness of the plate, the diameter of the hole and the index of the hole area of the piercing plate 29 and the space of the rotating disc 22 are determined from the next consideration. Namely, in the case of the soap raw material it has been used as the raw material 60 with the above details, the soap with an appropriate ratio between the type of crystals, and the type of crystals can be easily obtained. Specifically, if the values of the mesh, the diameter of the orifice, the index of the orifice area or the space where it is established broad, separated from the respective ranges identified in the foregoing, this would result in insufficient kneading of the raw material 60, which leads to insufficiency of the type of crystals or results, on the contrary, in excessive kneaded material, which leads to insufficient type of crystals. In this regard, soap that has a large amount of crystal type, is hard to dissolve; while soap that has a lot of type of crystals, has good bubbling property. In this way, the above adjustment values can be selected within the ranges identified in the above, depending on the relationship of which of these types of crystals are considered more important than the others. Furthermore, it is advantageous that a plurality of filter types 23 having different values have to be prepared, to allow selection of these according to a particular need for the relationship between these types of glass. Incidentally, a number 30 in Figure 4 depicts a cutting blade fixedly connected to the first screw 17A and this cutting blade is positioned to face the downward side of the surface of the last stationary disk 21. As shown in Figure 3 , the molding mechanism 5 includes a restricted cylinder member 31, pivotably connected with the terminal end on the second cylinder 18B to be opened and closed, a rectification plate 32 placed forward of the restricted cylinder member 31 and having a number of small holes and an extruder die 33 positioned rearwardly of the restricted cylinder member 31. With reference to Figures 1 to 3, downstream of the mixing-kneading transport device 4, a movement device 35 is provided to support the second 18 transport screw down and changing its front / rear and right / left orientation, when this second tor Transport ring 18 is removed from the apparatus. The movement device 35 includes a fixed platform 36, a movable platform 37 movable relative to the fixed disc 36 along the length of the transport screw, a first guide rail 39 positioned on the fixed platform 37 to guide movement of the platform 37 movable along the length of the second transportation screw 18 and a second guide rail 40 for causing the movable platform 37 to move in a direction normal to the first guide rail 39. With this device 35 in motion , to move the second transport screw 40 mounted on the movable platform 37 along the normal direction with the direction, the screw mounted on the movable platform is manually pushed to the sides to move on the second guide rail 40 transversely oriented . The automatic cutter device 6, placed downstream of the discharge end of the multi-stage vacuum extruder apparatus described above, comprises a conventional device of this type for cutting the extruded bar material 60 from the die 33 of the extruder in FIG. pieces of a predetermined size. The automatic embossing device 7, placed downwardly of the cutting device 6, comprises a well-known embossing device for embossing a predetermined marking, name of the product or the like on the cutting material 60.

II. Extrusion Method Using the Extruder Apparatus (Vacuum Extruder Apparatus): Next, an extrusion method using the vacuum extruder apparatus will be described as an example of the apparatus that implements the system for temperature control of the invention. This extrusion method includes: [1] a dosing step for separately and continuously dosing a plurality of raw material classes and then continuously charging the measured materials in the degassing tank 3; [2] a mixing-degassing step for stirring and mixing the plurality of classes of continuously charged materials and degassing a mixture through depressurization of the space, where the mixture is present; [3] a kneading-mixing step for kneading the mixing material under the depressurized condition in the course of its transport through the plurality of stages of the kneading mechanisms; and [4] an extrusion step for extruding the kneaded material in a predetermined initial shape. These steps also follow the steps of [5] a cutting step and [6] a stamping step are carried out in the serial order of [1] to [6] which will be described below. [1] Measurement or dosage stage At the top, in the feeding direction of the material 60, of the receiving tank 2 for loading the raw material 60, the first dosage unit 8 is placed to measure and feed the main raw material and the second dosage unit 9 for measuring and feeding an additional material such as a flavoring agent, coloring agent or the like. After dosing, the main material and the additional material are loaded into the receiving tank 2 continuously. [2] Mixing-degassing stage The material 60 loaded in the receiver tank 2 is stirred and mixed by the transport screw 11 placed on the outside of this receiver tank 2 and which also acts as a stirring medium and then fed into the connected mixing transport device 4. with the lower end of the degassing tank 3. In this, the vacuum chamber 15 formed downwardly of the first kneading mechanism 16 placed downwardly of the transport screw 11 is connected to the flow conduit extending to the vacuum pump, such that this vacuum chamber 15 Provides a depressurized space. In this depressurized space and through the reduction of pressure in it, the material 60 has its air or gas content removed. [3] kneading-mixing stage The mixing-mixing transport device 4 is connected to the lower portion of the vacuum chamber 15 of the degassing tank 3, such that the interior of the cylinders 17B, 17A of this mixing-mixing transport device 4 also it remains under the condition depressurized by the action of the vacuum pump. Accordingly, when the material 60 is transported by the transport screws 18, the material is subjected to the kneading and mixing function while being maintained under the depressurized condition. [4] extrusion stage At the terminal end of the transport conduit of the transport screw 18, the extruder die 30 is fixed to the cylinder 17, in such a way that the material is extruded from there in a bar-like manner due to the extrusion action of the transport screw. 18 [5] cutting stage The material 60 similar to an extruded bar of the extruder die 30 is cut to a predetermined size by the cutter device 6 placed downstream of the vacuum extruder in the direction of material transport. [6] stamped stage At this stage, a predetermined stamping of a brand, product name or the like is stamped on each cutting material 60.

OTHER MODALITIES (1) In the above embodiment, the intermediate ring 50 is interposed between the stationary disk 21A downwards and the stationary disk 21B upwards of the kneading mechanism 16. Conversely, as shown in Figures 10 and 11, an outer peripheral portion upwardly of the stationary disk 21A downwardly may extend axially by an amount corresponding to the thickness of the intermediate ring 50. Alternatively, instead of extending the outer peripheral portion upwardly from the stationary disk 21A downwards, the outer peripheral portion of the stationary disk 21B upwards may be extended in the downward direction, to also act as the intermediate ring 50. In this other embodiment, as can be clearly seen in Figures 10 and 11, the flow conduits 215a, 215b formed on the outer periphery of the stationary disk 21A, downwardly are extended in the axial direction to also function as 212a, 212b, 213a, 213b shown in Figures 7 and 8. (2) In In the above embodiment, the kneading mechanism 16 includes two mechanisms 20 of the kneading unit. In contrast, the temperature control system of the invention can be used in a kneading extruder including a kneading mechanism 16 or having more than three kneading unit mechanisms. (3) In the above embodiment, the kneading-mixing extruder apparatus which implements the system for temperature control, comprises an extruder apparatus of the single screw type as shown in Figure 5. On the contrary, as shown in Figure 6, the apparatus can be of the double screw type including a plurality of transport screws 17, 18 placed in parallel to each other to treat the material 60 of the degassing tank 3 through more than two conduits. In this case, the filter 23 can also be a double screw type filter including a plurality of filters of the single screw type of Figure 5 to treat the material 60 through a duct, with the filters being integrally connected each other by means of their respective peripheral edges. (4) In the above embodiment, the system for temperature control employs the device for controlling the temperature of the kneading mechanism, attached to the stationary disc of the kneading mechanism in combination with the cooling water conduits (i.e. the device for controlling the temperature of the outer periphery of the cylinder formed on the outer periphery of the cylinder extending in the spiral shape in the axial direction of the cylinder. On the other hand, the system for controlling the temperature can use only the device for controlling the temperature of the kneading mechanism, if the device for controlling the temperature of the outer periphery of the cylinder. (5) In the above embodiment, the flow conduits of the temperature control are in the form of circuits extending in the vicinity of the outer and inner peripheries of the stationary disk and communicating with each other. On the contrary, various other forms and arrangements will be possible, such as the addition of an intermediate circuit for the external and internal circuits. (6) The above embodiment describes the mixing-kneading extruder apparatus including the measuring device, the receiving tank, the degassing tank, the device for the mixed transport and the extrusion mechanism. Alternatively, the system for controlling the temperature of the invention can be used in various other types of apparatuses that use the screw mechanism and transport kneading in combination. (7) A soap must be kept at an elevated temperature, it is understood that the "fluid" as defined in the described embodiments, is not limited to the cooling water, but also any heating means such as hot water. In addition, the cooling water can be replaced by any other cooling medium such as ethylene glycol (antifreeze agent) or the like. The kneading-mixing extruder apparatus implementing the present invention can be used to process any other material apart from the soap material, such as oils and fats, food products, medical products, and so on. Although the claims include reference numerals or symbols for convenient comparison with the accompanying drawings, such inclusion does not limit the present invention to structures as shown in the drawings.

Claims

CLAIMS 1. A system for controlling the temperature characterized in that it comprises: a stationary disk that includes a flow conduit that extends from the proximity of a center through the proximity of its periphery and that defines an entry opening and an exit opening for the flow conduit; the fluid supply means communicated with the inlet and outlet openings for supplying the fluid to the flow conduit in circulation; and the temperature control means for controlling the temperature of the stationary disk; wherein the stationary disk further defines a plurality of holes which extend through the disk in its thickness and width remains free of communication with the flow conduit. 2. The system for controlling the temperature according to claim 1, characterized in that the flow conduit circulates the fluid set at a temperature lower than a material temperature, when the material passes the stationary disk. 3. The system for controlling the temperature according to claim 1, characterized in that the flow conduit circulates the adjusted fluid at a temperature greater than a temperature of the material, when the material passes the stationary disk. 4. The system for controlling the temperature according to claim 1, characterized in that the means for controlling the temperature includes a temperature sensor for measuring the temperature of the stationary disk, a unit that adjusts the temperature to adjust a temperature of the disk stationary, a comparator unit for comparing the temperature measured by the temperature sensor, with the temperature set by the temperature setting unit and an instruction unit for adjusting a flow rate of the flow supply means based on a temperature difference obtained from the comparison by the comparator unit. 5. An extruder-kneading extruder characterized in that it comprises: a receiving device for receiving the raw material; a cylinder that incorporates a screw to extrude and transport the material inside the cylinder; a kneading-mixing mechanism placed along the length of the cylinder to knead and mix the material; and a molding mechanism positioned along the length of the cylinder to mold the material; the kneading-mixing mechanism includes a rotating disk rotating with the screw and a stationary disk fixed to the cylinder, the rotating disk and the stationary disk being placed side by side in an axial direction of the cylinder; the stationary disk includes a flow conduit extending from the vicinity of a center through the vicinity of a periphery thereof and defining an inlet opening and an outlet opening for the flow conduit; and a system for temperature control that includes fluid supply means communicated with the inlet and outlet openings for supplying the circulating fluid and temperature control means for controlling the temperature of the stationary disk. 6. The kneading-mixing extruder apparatus according to claim 5, characterized in that the kneading mechanism includes a plurality of stationary discs. 7. The kneading-mixing extruder apparatus according to claim 6, characterized in that the plurality of stationary discs includes a first stationary disk and a second stationary disk, the first stationary disk forming the first flow conduit, the second stationary disk forming a second flow conduit, the first and second flow conduits communicating with each other. 8. The kneading-mixing extruder apparatus according to claim 6, further characterized in that it comprises: a device for controlling the temperature at the outer periphery of the cylinder, having a water conduit which covers an outer periphery of the cylinder and in which the fluid can circulate. 9. The kneading-mixing extruder apparatus according to claim 6, further characterized in that it comprises: a metering or metering device for dosing the material; and a degassing tank to degas the material fed from the receiver tank. SUMMARY The invention relates to a system for temperature control and also to a mixing-extruder extruder that implements the system for temperature control. Conventionally, in the soap making process, in order to restrict the increase in the temperature of the soap raw material, a cooling water conduit is provided around an outer periphery of a cylinder constituting a transport section of the extruder apparatus, to cool the outer periphery of the cylinder and consequently the material transported inside the cylinder. With this construction, the portion of the material present in the vicinity of the inner periphery of the cylinder can be cooled efficiently, while the other portion of material present adjacent to the center of the cylinder is not cooled efficiently. The temperature control system of the invention includes a flow conduit formed in a stationary disk provided in a kneading mechanism of the extruder apparatus and having a plurality of holes, a fluid supply means for supplying adjusted fluid in the temperature within the flow conduit and a means for controlling the temperature to adjust the temperature of the stationary disk to a desired target temperature. Therefore, when the transported material is passed through the stationary disk maintained at the desired temperature, this material can be cooled uniformly regardless of its location with respect to the radial direction inside the cylinder. CLAIMS MODIFIED UNDER ARTICLE 19 Received by the International Bureau on October 31, 1995; The original clauses 1 to 4, 6 and 7 have been deleted; The clauses 5, 8 and 9 originals have been modified; and the new clauses 10 to 12 have been added:

1. - (canceled) 2.- (Canceled) 3. - (Canceled) 4.- (Canceled) 5.- (Modified) A mixing-extruder extruder characterized in that it comprises: a receiving tank to receive the raw material; a cylinder that incorporates a screw to extrude and transport the material inside the cylinder; a kneading-mixing mechanism arranged along the length of the cylinder to knead and mix the material; and a molding mechanism positioned along the length of the cylinder to mold the material; the kneading-mixing mechanism includes a rotating disc rotating with the screw and a plurality of stationary discs fixed to the cylinder, the rotating disc and the stationary discs are placed side by side in an axial direction of the cylinder; the stationary discs include a first stationary disk and a second stationary disk, the first stationary disk includes a first flow conduit that is emitted from the vicinity of a periphery thereof and which defines an inlet opening and an outlet opening for the conduit flow; and the second stationary disk includes a second flow conduit that is communicated with one another; and a system for temperature control that includes fluid supply means communicated with the inlet and outlet openings for supplying the circulating fluid and temperature control means for controlling the temperature of the stationary disk. 6.- (Canee-i ada) 7.- (Canceled) 8.- (Modified) The extruder-mixing-kneading extruder according to claim 5, further characterized in that it comprises: a device for the control of the temperature in the outer periphery of the cylinder, which has a water conduit which covers an outer periphery of the cylinder and in which the fluid can circulate. 9.- (Modified) The kneading-mixing extruder apparatus according to claim 5, further characterized in that it comprises: a dosing or measuring device for dosing the material; and a degassing tank to degas the material fed from the receiver tank. 10. (New) An extruder-kneading-extruder apparatus according to clause 5, wherein the fluid conduit, the fluid is at a temperature lower than that of the material as it passes through the stationary disk. 11. (New) An extruder-kneading-extruder apparatus according to clause 5, wherein the fluid conduit, the fluid is at a temperature higher than that of the material as it passes through the stationary disk. 1

2. (New) An extruder-kneading-extruder apparatus in accordance with clause 5, wherein the system for temperature control includes a temperature sensor for the temperature mixing of the stationary disk, a temperature setting unit for establishing a desired temperature of any of the plurality of stationary discs, a comparison unit for comparing the temperatures mixed by the temperature sensor with the setting of the temperature by the temperature setting unit, and an instruction unit for generating an instruction for adjusting the fluid velocity of a device that provides the fluid based on a temperature difference obtained by the comparison unit. EXPLANATION BASED ON ARTICLE 19 The first stationary disk and the second stationary disk, the first fluid conduit and the second fluid conduit formed in these disks and also the condition of the communication of these first and second fluid conduits, all related to the invention and imposed in the Original clause 7, are not described or suggested in any of the references cited in this search. Therefore, these characteristics are introduced in the original clause 5, in order to distinguish the invention in terms of novelty and not obvious.