JP2009248482A - Kneading device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a kneading device controlling the temperature of a resin material suitably. <P>SOLUTION: This kneading device is provided with: a screw section 13 connected to a driving section; and a cylinder section arranged so as to surround the screw section 13. The screw section 13 is provided with a temperature controlling means formed of a peltier element 21. Preferably, the temperature controlling means made of the peltier element 21 is provided at a plurality of places in the axial direction of the screw section 13, or even in a cylinder section. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a kneading apparatus.

In an apparatus used to knead other polymer material or inorganic material with respect to at least one kind of thermoplastic polymer material, when the resin material is kneaded while rotating at high speed and applying high shear, It is known that shear heat generation occurs at the interface between the screw portion and the resin material, and the temperature of the resin material rises. When the temperature of the resin material rises in this way, the viscosity of the resin material decreases, so that the shearing force does not work, and as a result, there is a problem that the mixing of the resin material becomes worse.
Therefore, there is known one provided with a resin temperature control means in order to suppress the temperature rise of the resin material in the kneading apparatus (see, for example, Patent Document 1).
The device of Patent Document 1 is provided with a through hole (refrigerant conduit) in a screw part, and a coolant such as water is guided into the through hole to cool the screw part, thereby suppressing heat generation of the resin material.
JP-A-10-264233

  By the way, in the apparatus of the above-mentioned patent document 1, since the heat absorption performance in a through-hole is the highest in a refrigerant | coolant introducing | transducing part and heat is absorbed as a refrigerant | coolant advances through a through-hole, the heat absorption performance will fall. Therefore, the temperature of the resin could not be suitably controlled throughout the entire apparatus. That is, the heat generated when the polymer resin material is kneaded by rotating the screw portion at a high speed cannot be controlled.

  Then, this invention is made | formed in view of the above-mentioned situation, and provides the kneading apparatus which can control the temperature of a resin material suitably.

In order to solve the above problems, the present invention provides a kneading apparatus including a screw part connected to a drive part and a cylinder part arranged so as to surround the screw part. A temperature control means comprising a Peltier element is provided.
According to this invention, a Peltier element can be arrange | positioned in the suitable position of a screw part, and the resin material temperature of the vicinity can be controlled. Therefore, by appropriately arranging the Peltier elements, the resin material temperature in the kneading apparatus can be suitably controlled over the entire area in the apparatus.

The cylinder portion is provided with temperature control means comprising a Peltier element.
According to this invention, since the Peltier elements are arranged not only in the screw part but also in the cylinder part, the resin material temperature in the kneading apparatus can be more suitably controlled over the entire area in the apparatus.

The screw portion is configured to be rotatable at a share rate of 1000 / sec or more.
According to this invention, even when the screw part rotates at a high speed and the resin material further generates heat, the resin material temperature in the kneading apparatus is suitably adjusted over the entire area of the apparatus by appropriately arranging the Peltier element. Can be controlled.

In addition, a plurality of the Peltier elements are provided in the axial direction of the screw portion.
According to the present invention, although the temperature distribution of the resin material appears remarkably in the axial direction of the kneading apparatus, the resin material temperature can be more reliably distributed over the entire area of the apparatus by appropriately arranging a plurality of Peltier elements in the axial direction. Can be controlled.

In the kneading apparatus of the present invention, the power supply means to the Peltier element is connected to the screw part, the rotating contact part to which the power line of the Peltier element is connected, and the metal brush for supplying power to the rotating contact It is characterized by being composed of parts.
According to this invention, it is possible to reliably supply power to the Peltier element provided on the rotating screw part.

Alternatively, the kneading apparatus of the present invention is characterized in that the power feeding means to the Peltier element is constituted by a battery provided in the screw portion.
According to this invention, it is possible to reliably supply power to the Peltier element provided on the rotating screw part.

Furthermore, the present invention provides a kneading apparatus comprising a screw part connected to a drive part and a cylinder part arranged so as to surround the screw part, wherein the cylinder part has a temperature control means comprising a Peltier element. It is characterized by being provided.
According to this invention, a Peltier element can be arrange | positioned in the suitable position of a cylinder part, and the resin material temperature of the vicinity can be controlled. Therefore, by appropriately arranging the Peltier elements, the resin material temperature in the kneading apparatus can be suitably controlled over the entire area in the apparatus. Moreover, since the cylinder portion does not rotate, power can be easily supplied to the Peltier element.

  According to the present invention, the temperature of the resin material in the vicinity thereof can be controlled by disposing the Peltier element at a suitable position of at least one of the screw part and the cylinder part. Therefore, by appropriately arranging the Peltier elements, the resin material temperature in the kneading apparatus can be suitably controlled over the entire area in the apparatus.

(First embodiment)
Next, a first embodiment of the present invention will be described with reference to FIGS. In each drawing used for the following description, the scale of each member is appropriately changed to make each member a recognizable size.
As shown in FIGS. 1 and 2, the kneading apparatus 10 includes a drive unit 11 configured by a motor or the like, a rotary contact unit 25 connected to the drive unit 11 and configured to be rotatable in the axial direction, and a rotary contact. A screw portion 13 connected to the portion 25 and configured to be rotatable in the axial direction; a cylinder portion 15 disposed so as to surround the outside of the screw portion 13; and an outer surface of the cylinder portion 15; And a heater 17 configured to be able to heat the polymer resin material supplied into the kneading apparatus 10.

  The screw part 13 is comprised by the rod-shaped member with a substantially circular cross section formed, for example with stainless steel. On the surface of the screw portion 13, a mountain portion 14 is continuously formed in a spiral shape along the axial direction. As shown in FIGS. 3 and 4, a plurality of Peltier elements 21 are provided in the screw portion 13 along the axial direction. Further, four Peltier elements 21 are arranged every 90 ° in a substantially circular cross section orthogonal to the axial direction of the screw portion 13. The power line 23 of the Peltier element 21 is guided in the direction of the drive unit 11 through the screw part 13, and the power line 23 is led to the rotary contact part 25 provided outside the cylinder part 15.

  As shown in FIG. 18, the rotary contact portion 25 has a coupling structure at both ends so that one end is connected to the drive portion 11 and the other end is connected to the screw portion 13. Is formed in a substantially cylindrical shape. A plurality of recesses 83 are formed on the side surface 81a of the main body 81 of the rotary contact portion 25 so as to extend along the circumferential direction. The recess 83 is formed with a plurality of ring electrodes 85 for supplying power to the Peltier element 21. As shown in FIG. 19, connectors 87 corresponding to the ring electrodes 85 are formed on the connection surface 25 a of the rotary contact portion 25 with the screw portion 13. By connecting the power line 23 of the Peltier element 21 to the connector 87, the rotary contact portion 25 and the power line of the Peltier element 21 are electrically connected. Further, returning to FIG. 18, the metal brush 26 is disposed so as to face the side surface 81 a of the rotary contact portion 25, the metal brush 26 and the ring electrode 85 come into contact with each other, and power is supplied to the Peltier element 21. ing.

  Returning to FIG. 2, the cylinder portion 15 is formed by forming a hole portion 27 into which the screw portion 13 can be inserted into a substantially rectangular parallelepiped member made of, for example, stainless steel. The cross-sectional shape of the hole portion 27 is a substantially circular shape that is slightly larger than the outer diameter of the screw portion 13. The depth (axial direction) dimension of the hole portion 27 has such a length that all the crest portions 14 of the screw portion 13 are surrounded. An extrusion through-hole 29 through which the kneaded polymer resin material is extruded is formed at the tip of the hole 27. A raw material charging port 31 for supplying the polymer resin material into the hole 27 is formed on the upper surface 15 a of the cylinder portion 15 on the drive portion 11 side (opposite to the extrusion through hole 29).

  A plurality of heaters 17 (four in this embodiment) are provided on the upper surface 15a and the lower surface 15b of the cylinder portion 15, respectively. A plurality of heaters 17 are provided on the upper surface 15a and the lower surface 15b of the cylinder portion 15 at substantially equal intervals, and the heater 17 on the upper surface 15a and the heater 17 on the lower surface 15b are arranged to face each other. Further, the heater 17 has substantially the same width as the cylinder portion 15 so that the entire cylinder portion 15 can be heated. In addition, the some heater 17 is comprised so that each can be heated individually.

A through hole 35 penetrating in the width direction of the cylinder portion 15 is formed at a position facing the heater 17 between the upper surface 15 a or the lower surface 15 b and the hole portion 27 in the cylinder portion 15. That is, in this embodiment, eight through holes 35 are formed. The through hole 35 is formed in a substantially rectangular parallelepiped shape, and the Peltier element 19 is disposed in the through hole 35.
In the kneading apparatus 10 of the present embodiment, thermocouples 37A, 37B, and 37C for measuring the resin material temperature in the hole 27 are attached. The thermocouples 37 </ b> A, 37 </ b> B, and 37 </ b> C are attached between the adjacent heaters 17 and 17, and are arranged so that the tip of the thermocouple faces the hole portion 27.

Next, the structure of the screw part 13 will be described in detail.
As shown in FIG. 3, the screw portion 13 is composed of seven parts (first part 41 to seventh part 47), and a plurality of Peltier elements 21 are arranged therein. In addition, it is set as the 1st component 41, the 2nd component 42, ..., the 6th component 46, and the 7th component 47 in order from the front end side (the extrusion through-hole 29 side) of the screw part 13. FIG. Further, a peak portion 14 is formed on the surface of the first component 41 to the seventh component 47.

  As shown in FIG. 5, the first component 41 is a component disposed at a position closest to the extrusion through hole 29 in the hole portion 27 of the cylinder portion 15. Four first storage holes 51 for storing the Peltier elements 21 are formed at a 90 ° pitch on the side surface 41a on the drive unit 11 side of the first component 41. The side surface 41a is provided with four shafts 52 for inserting and connecting other components. The shaft 52 has a length that allows the second part 42 to the seventh part 47 to be inserted therethrough. Further, a screw groove 53 is formed at the tip of the shaft 52 on the drive unit 11 side to be screwed with a screw 33 (see FIG. 17) that is attached to fix all the parts after they are attached. Furthermore, the shafts 52 are respectively attached to substantially intermediate portions between the adjacent first storage holes 51.

  As shown in FIG. 6, in the second component 42, four through holes 54 into which the shaft 52 can be inserted are formed along the axial direction. In addition, four through holes 55 through which the power supply line 23 is inserted are formed approximately in the middle between the adjacent through holes 54 of the second component 42. Furthermore, a through-hole 56 through which the power line 23 of the gathered Peltier element 21 can be inserted is formed in the center of the second part 42 in the axial direction.

  As shown in FIG. 7A, a groove portion 57 for collecting the power supply line 23 led from the second component 42 side in the central through hole is formed on the side surface 43 a on the second component 42 side in the third component 43. Has been. The third component 43 has four through holes 58 through which the shaft 52 can be inserted along the axial direction. Further, a through hole 59 through which the power supply line 23 of the gathered Peltier elements 21 can be inserted is formed in the center of the third component 43 in the axial direction. 7B, four second storage holes 61 for storing the Peltier elements 21 are formed at a 90 ° pitch on the side surface 43b of the third component 43 on the fourth component 44 side. ing.

Since the fourth component 44 has substantially the same structure as the second component 42, the description thereof is omitted.
Since the fifth component 45 has substantially the same structure as the third component 43, description thereof is omitted.
Since the sixth component 46 has substantially the same structure as the second component 42, description thereof is omitted.

  As shown in FIG. 8A, a groove portion 65 for collecting the power supply lines 23 led from the sixth component 46 side is formed on the side surface 47a of the seventh component 47 on the sixth component 46 side. . Further, the seventh part 47 has four through holes 66 along the axial direction through which the shaft 52 can be inserted. Furthermore, a through-hole 67 through which the power line 23 of the assembled Peltier element 21 can be inserted is formed at the center of the seventh component 47 in the axial direction. As shown in FIG. 8B, the side surface 47 b on the rotating contact portion 25 side of the seventh component 47 has a coupling structure in order to connect with the rotating contact portion 25.

(Function)
Next, the manufacturing procedure of the screw part 13 will be described.
As shown in FIG. 9, the first component 41 is prepared, and the first Peltier element 21 a is inserted and attached to the first storage hole 51 of the first component 41. The power line 23 of the first Peltier element 21 a is arranged along the shaft 52.

  As shown in FIG. 10, the shaft 52 is inserted through the through hole 54 of the second component 42, and the power line 23 of the first Peltier element 21 a is inserted through the through hole 55, so that the second component 42 is replaced with the first component 41. Push until it touches.

  As shown in FIG. 11, the shaft 52 is inserted into the through hole 58 of the third component 43, and the power line 23 of the first Peltier element 21 a is inserted into the through hole 59 so that the third component 43 is connected to the second component 42. Push until it touches. At this time, the power supply line 23 protruding from the through hole 55 of the second component 42 is bent in the groove 57 and guided to the through hole 59 (see FIG. 12). Further, the second Peltier element 21 b is inserted and attached to the second accommodation hole 61 of the third component 43.

  As shown in FIG. 13, the shaft 52 is inserted into the through hole 54 of the fourth component 44, and the power line 23 of the second Peltier element 21 b is inserted into the through hole 55, so that the fourth component 44 is connected to the third component 43. Push until it touches. Further, the power supply line 23 of the first Peltier element 21 a is inserted into the through hole 56 of the fourth component 44.

  As shown in FIG. 14, the shaft 52 is inserted into the through hole 58 of the fifth component 45, and the power line 23 of the first Peltier element 21 a and the second Peltier element 21 b is inserted into the through hole 59 to 45 is pushed in until it makes contact with the fourth part 44. At this time, the power line 23 of the second Peltier element 21 b protruding from the through hole 55 of the fourth component 44 is bent in the groove 57 and guided to the through hole 59. Further, the third Peltier element 21 c is inserted and attached to the third accommodation hole 63 of the fifth component 45.

  As shown in FIG. 15, the shaft 52 is inserted into the through hole 54 of the sixth component 46, and the power line 23 of the third Peltier element 21 c is inserted into the through hole 55, so that the sixth component 46 is connected to the fifth component 45. Push until it touches. Further, the power line 23 of the first Peltier element 21a and the second Peltier element 21b is inserted into the through hole 56 of the sixth component 46.

  As shown in FIG. 16, the shaft 52 is inserted into the through hole 58 of the seventh component 47, and the power line 23 of the first Peltier element 21 a to the third Peltier element 21 c is inserted into the through hole 59. 47 is pushed in until it makes contact with the sixth part 46. At this time, the power line 23 of the third Peltier element 21 c protruding from the through hole 55 of the sixth component 46 is bent in the groove 57 and guided to the through hole 59.

  As shown in FIG. 17, the first part 41 to the seventh part 47 are joined by screwing a screw 33 into the thread groove 53 of the shaft 52. Further, the power line 23 of the first Peltier element 21a to the third Peltier element 21c protruding from the through hole 59 of the seventh part 47 is connected to the connector 87 of the rotary contact portion 25 (see FIG. 19), and the seventh part The screw part 13 and the rotary contact part 25 can be joined by joining 47 and the rotary contact part 25. Furthermore, the kneading apparatus 10 is manufactured by inserting the screw part 13 into the cylinder part 15.

  According to this embodiment, the Peltier elements 19 and 21 are appropriately arranged in the screw part 13 and the cylinder part 15 of the kneading apparatus 10. Thus, by arranging the Peltier elements 19 and 21 at suitable positions of the screw part 13 and the cylinder part 15, the resin material temperature in the vicinity thereof can be controlled. Therefore, by appropriately arranging the Peltier elements 19 and 21, the temperature of the polymer resin material in the kneading apparatus 10 can be suitably controlled over the entire area of the apparatus. Then, by making the temperature of the polymer resin material in the kneading apparatus 10 substantially uniform, a plurality of types of polymer resin materials can be reliably mixed in the kneading apparatus 10.

  Even when the screw portion 13 is rotated at a shear rate of 1000 / sec or more and the polymer resin material further generates heat, the polymer in the kneading apparatus 10 is appropriately disposed by arranging the Peltier elements 19 and 21 appropriately. The resin material temperature can be suitably controlled over the entire area in the apparatus.

  Further, although the temperature distribution of the polymer resin material appears remarkably in the axial direction of the kneading apparatus 10, since a plurality of the Peltier elements 19 and 21 are provided in the axial direction of the screw part 13 and the cylinder part 15, it is more reliable in the apparatus. The temperature of the polymer resin material can be controlled over the entire area.

  Moreover, since the power supply means to the Peltier element 21 in the screw part 13 is a rotating contact system, it is possible to reliably supply power to the Peltier element 21 provided in the rotating cylinder part 13.

(Second embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. In addition, since this embodiment differs from 1st embodiment only in the cooling structure of a cylinder part, since another structure is substantially the same as 1st embodiment, the same code | symbol is attached | subjected to the same location and detailed description is carried out. Omitted.
As shown in FIGS. 20 and 21, the kneading apparatus 110 includes a drive unit 11, a rotary contact unit 25, a screw unit 13 including a Peltier element 21 therein, a cylinder unit 15, and a heater 17. ing.

  A through hole 35 penetrating in the width direction of the cylinder portion 15 is formed at a position facing the heater 17 between the upper surface 15 a or the lower surface 15 b and the hole portion 27 in the cylinder portion 15. That is, in this embodiment, eight through holes 35 are formed. The through hole 35 is formed in a cylindrical shape, and a cooling pipe 113 is arranged in the through hole 35. Cold water flows through the cooling pipe 113 so that the polymer resin material in the hole 27 can be cooled.

  By comprising in this way, the temperature rise of the polymeric resin material in the hole part 27 can be suppressed with the Peltier element 21 provided in the inside of the screw part 13, and the cold water which flows into the cooling pipe 113.

Next, the result of measuring the temperature of the polymer resin material in the hole 27 when the above-described kneading apparatus 10 is used will be described.
In Example 1, the temperature of the polymer resin material was measured using the kneading apparatus 10 of the first embodiment, and in Example 2, the temperature of the polymer resin material was measured using the kneading apparatus 110 of the second embodiment. Is. Further, in the comparative example, as in the second embodiment, the cylinder part 15 is provided with a cooling means by water cooling, but the temperature of the polymer resin material is measured using a kneading apparatus in which the Peltier element is not provided in the screw part 13. It is.
The polymer resin materials used in the examples and comparative examples were HDPE (Nippon Polyethylene ER002) and TPU (Nippon Miractolan E185), and the weight ratio was 1: 1. Then, these two types of polymer resin materials are kneaded by a kneading apparatus, and the screw portion 13 is shown in Table 1 so that the share rate is 1000 / sec, 3300 / sec, 6700 / sec, and 10000 / sec. After rotating at the designated rotational speeds (300 rpm, 1000 rpm, 2000 rpm, 3000 rpm) and reaching the designated rotational speed, the polymer resin material temperature in the hole 27 after 1 minute is set to the thermocouple 37A, 37B, 37C. (Corresponding to A, B and C in the table, respectively). The results of Example 1 are shown in Table 1, and the results of Example 2 are shown in Table 2. Table 3 shows the results of the comparative example.

  For example, the temperature difference between the polymer resin material temperature in the thermocouple 37A and the polymer resin material temperature in the thermocouple 37C when the rotation speed of the screw portion 13 is set to 3000 rpm (share rate 10000 / sec) is In Example 1 of the embodiment, the difference is 2 ° C., whereas in Example 2 of the second embodiment, the difference is 11 ° C., and in the comparative example, the difference is 40 ° C. The same tendency at other rotational speeds, that is, by providing a Peltier element efficiently as in the kneading apparatus 10 of the first embodiment, the temperature of the polymer resin material in the kneading apparatus 10 (in the hole 27) is substantially reduced. It becomes possible to hold uniformly. As a result, a plurality of polymer resin materials can be reliably mixed in the kneading apparatus.

It should be noted that the technical scope of the present invention is not limited to the above-described embodiment, and includes those in which various modifications are made to the above-described embodiment without departing from the spirit of the present invention. That is, the specific materials, configurations, and the like given in the embodiment are merely examples, and can be changed as appropriate.
For example, in this embodiment, a method of supplying power to the Peltier element in the screw portion by a rotating contact is adopted. However, a battery can be installed in the screw portion so that the Peltier element can be powered by the battery. .
Further, in this embodiment, the case where the Peltier element is arranged in the screw portion has been described. However, if the temperature of the polymer resin material can be suitably controlled, a configuration in which the Peltier element is arranged only in the cylinder portion is adopted. May be.
Furthermore, in this embodiment, although the screw part was comprised with seven components, other division | segmentation numbers may be sufficient and the arrangement position and arrangement number of a Peltier element may be changed.

It is a perspective view of the kneading apparatus in the first embodiment of the present invention. It is a fragmentary sectional view which follows the AA line of FIG. It is sectional drawing which follows the BB line of FIG. It is sectional drawing which follows the CC line of FIG. It is a perspective view of the 1st component in 1st embodiment of this invention. It is a perspective view of the 2nd component in 1st embodiment of this invention. It is a perspective view of the 3rd component in 1st embodiment of this invention, (a) is a surface by the side of an extrusion through-hole, (b) is a surface by the side of a drive part. It is a perspective view of the 7th part in a first embodiment of the present invention, (a) is a surface by the side of an extrusion penetration hole, and (b) is a surface by the side of a drive part. It is explanatory drawing (1) which shows the manufacturing process of the screw part in 1st embodiment of this invention. It is explanatory drawing (2) which shows the manufacturing process of the screw part in 1st embodiment of this invention. It is explanatory drawing (3) which shows the manufacturing process of the screw part in 1st embodiment of this invention. It is explanatory drawing which shows the wiring method of the power wire of the Peltier device in 1st embodiment of this invention. It is explanatory drawing (4) which shows the manufacturing process of the screw part in 1st embodiment of this invention. It is explanatory drawing (5) which shows the manufacturing process of the screw part in 1st embodiment of this invention. It is explanatory drawing (6) which shows the manufacturing process of the screw part in 1st embodiment of this invention. It is explanatory drawing (7) which shows the manufacturing process of the screw part in 1st embodiment of this invention. It is explanatory drawing (8) which shows the manufacturing process of the screw part in 1st embodiment of this invention. It is a perspective view of the rotation contact part in a first embodiment of the present invention. It is a schematic block diagram of the connection surface with the screw part of the rotation contact part in 1st embodiment of this invention. It is a perspective view of the kneading apparatus in the second embodiment of the present invention. It is a fragmentary sectional view which follows the DD line | wire of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10,110 ... Kneading apparatus 11 ... Drive part 13 ... Screw part 15 ... Cylinder part 19, 21 ... Peltier element 23 ... Power supply line 25 ... Rotary contact part 26 ... Metal brush

Claims (7)

A screw part connected to the drive part;
In a kneading apparatus comprising a cylinder portion disposed so as to surround the screw portion,
A kneading apparatus characterized in that a temperature control means comprising a Peltier element is provided in the screw portion.   The kneading apparatus according to claim 1, wherein the cylinder portion is provided with temperature control means including a Peltier element.   The kneading apparatus according to claim 1 or 2, wherein the screw part is configured to be rotatable at a shear rate of 1000 / sec or more.   The kneading apparatus according to any one of claims 1 to 3, wherein a plurality of the Peltier elements are provided in the axial direction of the screw portion.   The power supply means to the Peltier element is composed of a rotating contact part connected to the screw part and connected to the power line of the Peltier element, and a metal brush part for supplying power to the rotating contact. The kneading apparatus according to any one of claims 1 to 4, wherein   The kneading apparatus according to any one of claims 1 to 5, wherein a power supply means to the Peltier element is constituted by a battery provided in the screw portion. In a kneading apparatus comprising a screw part connected to a drive part and a cylinder part arranged so as to surround the screw part,
A kneading apparatus, wherein the cylinder portion is provided with temperature control means comprising a Peltier element.

Images