WO1999061213A1 - Low-friction type kneading device - Google Patents

Abstract

A kneading device including a cylinder with an inlet for accepting a material to be processed and an outlet, a rotary screw for extruding the received material toward the outlet, and a grinding/kneading mechanism, wherein the grinding/kneading mechanism includes a stationary disk (21, 21') arranged downstream of the rotary screw, and a rotary disk (22, 22', 42, 44, 46) disposed between the rotary screw and the stationary disk and driven for rotation with the rotary screw. The stationary disk and the rotary disk both form a plurality of openings through which the material being processed is passed toward downstream. Because the number of material passage openings (22a, 42a, 44a, 46a) formed by the rotary disk is set to between 2 and 20, the temperature of the processed material is prevented from rising.

Description

 Description Low friction type dispensing device

 The present invention relates to a kneading apparatus that receives an object to be processed and extrudes it in a kneaded state, and more specifically, to a kneading apparatus having the following configuration.

 A cylinder having a receiving portion for receiving the object to be processed and an outlet for the object to be processed; a rotary screw provided in the cylinder; this rotary screw is capable of pushing the received object to be processed toward the outlet of the object to be processed. ;

 A fixed member that is non-rotatably fixed in the cylinder downstream of the rotary screw; and a rotating member that is disposed between the rotary screw and the fixed member and that is driven to rotate in accordance with the rotation of the rotary screw. A dispensing device in which a rubbing mechanism, a fixed member, and a rotating member each have a plurality of workpiece passages that allow the workpiece to move downstream. Background technology

 Conventionally, as such a kneading device, there has been known a kneading device in which a large number (for example, 60) of through holes are formed in a rotating member as passages for an object to be processed, as illustrated in FIG. However, although the kneading device using the conventional technique has a sufficient effect of rubbing the material, the temperature of the material rises (the temperature of the material charged into the receiving part of the device and the material temperature at the outlet of the workpiece, that is, the outlet temperature). (Difference from temperature) was too large, and there was room for improvement.

Further, as another conventional example of such a kneading apparatus, a plastic material described in U.S. Pat. No. 2,640,033 (filed on Jan. 1, 1947 AD) is disclosed. Devices that continuously process and extrude are known. The device described in the above-mentioned U.S. Patent is an operation which combines a material to be treated with an additive or obtains a special effect or a fine cellular structure (a structure surrounding bubbles) by a beating operation (beating operation). ) Without any adverse effects such as a rise in the temperature of the material. It does not impair properties such as crystal structure or ultra-micro crystal structure. On the other hand, in the rotating member used in this apparatus, at least 15 through holes per one rotating member are formed as passages for the object to be processed, as judged from the attached drawing. The blade of the member is formed with gas holes for mixing air bubbles from outside into the kneading material.

 U.S. Pat. No. 2,494,891 (filed on Jan. 1, 1945 in the Christian era) is an invention relating to a method and apparatus for manufacturing stone stones by the same inventor as the above-mentioned US patent. There is disclosed a dispensing device having a structure almost the same as that of the above-mentioned US patent. This patent discusses how to produce a smooth, plastic solid float (floatingssoap).

 The background behind the inventions of the two U.S. patents is that the earlier method of producing a floating experiment involves raising the temperature of the material and entraining air bubbles into the material by the whipping operation. However, the inventors of the above two U.S. patents have reported that the method of heating a material in this way has a problem that a desirable crystal structure is not formed and a tablet-like embossing cannot be performed. He has developed a method and apparatus for entraining air bubbles into the material without overheating the material. Needless to say, these devices do not have a vacuum degasser, etc., because they basically contain air bubbles in the material.

 However, the precise and smooth quality (hard granules called sandfill are not felt at the fingertips and the quality is less variable) that meets the customer's demands in the present age situation. When handling non-floating stones containing air bubbles as described above), knead the inside of the cylinder, etc., with a vacuum degasser to remove any air bubbles from the material and increase the density. Therefore, the air entraining device according to the above-mentioned prior art cannot be used.

Accordingly, the present invention provides a kneading apparatus suitable for the production of stone stones demanded by the current customer as described above, in other words, even under the condition of vacuum kneading, the effect of rubbing the material is sufficient, and the The purpose of the present invention is to provide a kneading apparatus that has no fluctuation in quality and has a sufficiently low rise in material temperature. Disclosure of the invention

 In the kneading apparatus of the present invention, the number of the plurality of processing object passage openings formed by the rotating member is reduced to fall within a range of two to twenty. With this configuration, the workpiece is pressed against a fixed member (specifically, a mesh filter or the like) by a rotating member that is driven to rotate. At this time, the number of the plurality of workpiece passage ports formed by the rotating member is set in the range of 2 to 2 °. As a result, a kneading device was constructed in which the generation of frictional heat due to being pressed against the surface was minimized, and as a result, the temperature rise of the workpiece caused by passing through the kneading device was sufficiently suppressed. .

 Further, in addition to the above configuration, if the number of the plurality of workpiece passage ports formed by the rotating member is set in the range of 2 to 10, the rise in the outlet temperature of the material is more sufficiently suppressed. be able to.

 Furthermore, a kneading device in which the ratio of the total cross-sectional area of the plurality of workpiece passage ports formed by the rotating member to the total cross-sectional area of the internal space of the cylinder is within a range of 40 to 60%. By doing so, a kneading effect is sufficient, in other words, there is no sand-fill, there is little variation in quality, and a kneading device capable of producing stone stones is provided. If each of the processing object passage openings is configured to have a fan shape that gradually expands radially outward from the rotation axis side of the rotating member, uniform strength can be obtained throughout the rotating member, and moreover, the rotating member Since the material is kneaded at a uniform flow rate in the radial direction, a kneading device that produces a homogeneous material with high efficiency can be obtained.

 A plurality of workpiece passage openings formed by the rotating member are equally spaced by a plurality of rod-shaped members having the same width and extending from the rotation axis side toward the outside in the radial direction. By doing so, more uniform strength can be obtained for the entire rotating member, and the uniformity of the material flow rate in the radial direction of the rotating member can be further improved. As a result, a more uniform material can be obtained with high efficiency. A kneading device to produce is obtained.

In addition, if the plurality of rod-shaped members are configured to extend the same width from the rotation axis center side toward the radially outer side, the strength uniformity of the rotation member is maintained at a relatively high level. However, the uniformity of the material flow rate in the radial direction of the rotating member is further improved, and as a result, a kneading apparatus that produces a more homogeneous material with high efficiency can be obtained.

 The rotating member has a disk-shaped outer shape, and the plurality of workpiece passage ports formed by the rotating member are configured as through holes formed in the disk-shaped rotating member. Since the radial ends of the members do not become free ends but are integrally connected to each other by one part of the components of the rotating member, it is easy to ensure a sufficiently high strength of the rotating member. The through-holes are six through-holes arranged along the circumferential direction of the rotating member. Each of these through-holes has a pair of radially extending sides formed by adjacent rod-shaped members and a cylinder. The inner side of the cylinder is formed by a side extending in the circumferential direction adjacent to the inner wall and an arc-shaped side connecting these three sides, and the radius of the arc-shaped side is greater than one sixth of the inner diameter of the cylinder. With this configuration, the member constituting the central portion of the rotating member, the rod-shaped member, and the ring-shaped member connecting the mouth-shaped members are more integrally connected. Strength is more easily obtained.

 Furthermore, if the fixing member is configured to include a mesh filter and a fixing plate that supports the filter from the downstream side, a kneading device with a sufficient kneading effect can be provided. In addition, when a means such as a vacuum device for degassing the object to be processed is provided at a predetermined position in the cylinder, a kneading device that provides a higher density and smooth stone lithography with high production efficiency can be obtained. BRIEF DESCRIPTION OF THE FIGURES

 FIG. 1 is a side view showing the entire multi-stage vacuum kneading apparatus.

 FIG. 2 is a plan view showing the entire multi-stage vacuum kneading apparatus.

 FIG. 3 is a cross-sectional view showing a part of a multi-stage vacuum kneading apparatus.

 FIG. 4 is an enlarged sectional view showing a part of a kneading / conveying device provided in the multistage vacuum kneading / molding apparatus of FIG. 1,

 Fig. 5 (a) is a partial cross-sectional view of the rubbing mechanism.

 Fig. 5 (b) is a schematic diagram of the main part of Fig. 5 (a),

FIG. 6 is an explanatory view showing a part of another embodiment of the multistage vacuum kneading apparatus, FIG. 7 is an explanatory view showing the shape of a conventional rotating disk, 5 FIGS. 8 (a) to 8 (c) are explanatory diagrams showing another embodiment of the rotating disk, and FIGS. 9 (a) and 9 (b) are explanatory diagrams showing another embodiment of the rotating disk. . BEST MODE FOR CARRYING OUT THE INVENTION

 Hereinafter, an embodiment of a low-friction type kneading apparatus of the present invention will be described with reference to the drawings, taking a vacuum kneading apparatus for stone materials as an example.

 [About vacuum kneading and molding equipment]

 The multi-stage vacuum kneading apparatus shown in Fig. 1 to Fig. 5 is a weighing device 1 that continuously weighs a plurality of types of workpieces with force, force, and continuously, and a workpiece that is supplied from the weighing device 1 side. A receiving tank 2 for receiving the object A (an example of a receiving section), a deaeration tank 3 for deaeration of the object A, a kneading / conveying device 4 for conveying the object A, and forming the object A And a forming mechanism 5 (an example of an outlet of the object to be processed). Further, further downstream of the forming mechanism 5, an automatic shredding machine and an automatic stamping machine (not shown) are provided in series as a post-processing device of the formed product.

 The weighing device 1 is provided on the upstream side of the first weighing machine S for weighing and supplying the raw material base, the second weighing machine 9 for weighing and supplying additives such as fragrances and pigments, and the force receiving tank 2. I have. The receiving tank 2 is provided with a receiving hopper 10 constituting a mixing area for stirring and mixing the object A to be processed, and is disposed in the hopper 10 so as to penetrate the vicinity of the bottom of the hopper 10 back and forth. A horizontal type transfer screw 11 is provided. The workpiece A put into the hopper 10 is kneaded and agitated by the transport screw 11 and is forcibly sent out to the downstream side along the axis of the transport screw 11.

A drive motor 12 is provided at an end of the transfer screw 11 on the upper side in the transfer direction of the workpiece A, and the power of the drive motor 12 is input to the transfer screw 11. It is composed. A first rubbing mechanism 16a is provided on the lower side of the transport screw 11 in the transport direction of the workpiece A. The transport screw 11 forcibly sends the workpiece A to the first rubbing mechanism 16a. The object A is discharged into the deaeration tank 3 after being subjected to the rubbing action by the first rubbing mechanism 16a. The detailed structure of the first rubbing mechanism 16a is substantially the same as that of the second rubbing mechanism 16b, which will be described later, and will not be described here. Note that the amount of the workpiece A sent from the receiving tank 2 and the amount of the workpiece A charged from the measuring device 1 to the receiving tank 2 are always constant inside the receiving hopper 10 of the receiving tank 2. They are set to the same extent so that the amount of the object to be treated A is present. That is, a pair of level sensors 13 and 13 are provided in the receiving hopper 10 to detect the upper and lower levels of the object A to be processed, respectively, and to constantly detect the upper and lower levels between the upper and lower levels. The feed amount of the weighing device 1 is controlled by a control device (not shown) so that the upper surface level of the workpiece A is positioned.

 The degassing tank 3 includes a vacuum chamber 15 that forms a degassing area. The mixed object A is degassed under reduced pressure in the vacuum chamber 15 and then sent to the kneading / conveying device 4. Specifically, the vacuum chamber 115 is connected to a vacuum pump VP, and the path from the receiving hopper 10 to the outlet of the conveying screw 11 is closed in an airtight manner by the workpiece A. Therefore, the inside of the vacuum chamber 115 can be used as a decompression space.

 The vacuum chamber 15 is provided with an opening 15a located on the extension of one axis of the screw of the transfer screw 11 and a lid 14 capable of opening and closing the opening 15a. By opening 4, maintenance such as attachment and detachment of the screw 11 or attachment and detachment of the rubbing mechanism 16 can be easily performed through the opening 15a.

 As shown in FIGS. 1 to 4, the kneading / conveying device 4 includes a pair of a first conveying screw 17 provided on the upper side of the conveying and a second conveying screw 18 provided on the lower side of the conveying. , And a second rubbing mechanism 16 b disposed between the two conveying screws 17, 18. Further, since the upstream end of the kneading / conveying device 4 is connected to the vacuum chamber 115 of the degassing tank 3, the inside of the kneading / conveying device 4 is also maintained in a reduced pressure state by the action of the vacuum pump. Therefore, the workpiece A transported by the transport screw 17 is transported while being kept in a reduced pressure state, and is subjected to the rubbing action by the second rubbing mechanism 16b.

The first transfer screw 17 and the second transfer screw 18 are respectively the transfer screw shafts 17 A and 18 A, and the cylinders 17 B and 18 B that house the transfer screw shafts 17 A and 18 A. Between the first screw shaft 17 A disposed on the upstream side in the transport direction and the second screw shaft 18 A disposed on the downstream side, and each of these first and second A second rubbing mechanism 16b is provided between the screw shafts 17A and 18A and the cylinders 17B and 18B, respectively. The first screw shaft 17A and the second screw single shaft 18A are key-connected so as to rotate integrally.

 The pitch (165 mm) of the screw and spiral blade of the lower screw shaft 18 A is set slightly larger than the spiral pitch (155 mm) of the lower screw shaft 17 A. Using the electric motor 19 shown in the figure as a power source, it is rotationally driven at about 5 to 30 rpm (usually about 15 rpm) via an appropriate deceleration transmission mechanism.

 The configuration of the rubbing mechanisms 16a and b will be described by taking the second rubbing mechanism 16b as an example (the first rubbing mechanism 16a also has a substantially similar structure).

 As best shown in FIG. 4, the second rubbing mechanism 16b is composed of two sets of unitary crushing mechanisms 20, 20 'arranged adjacent to each other along the transport direction of the workpiece A. ing. Each unit kneading mechanism 20 (20 ') is composed of a fixed disk 21 (2 1') fixed to cylinders 17B and 18B so as to prevent rotation, and a fixed disk 21 (2 1 '). The rotating disk 22 (22 '), which is located on the upstream side and rotates relative to the fixed disk 21 (21') (both are examples of rotating members), and the rotating disks 22 (22 ') A filter 23 (23 ') is provided between 21' and 22 ').

 As shown in FIGS. 3 and 4, the two sets of unit kneading mechanisms 20 and 20 ′ are both the first screw so that the unit kneading mechanism 20 is located on the upstream side and the unit kneading mechanism 20 ′ is located on the downstream side. Externally fitted on shaft 17A. The fixed disk 21 of the upstream unit kneading mechanism 20 is located immediately before the rotating disk 22 ′ of the downstream unit kneading mechanism 20 ′, and a higher kneading effect is provided between the two. A clearance of about 1 mm is provided in the transport direction of the workpiece A. Each of the two rotating discs 22, 22 'is keyed to the first screw shaft 17A so as to rotate integrally with the first screw shaft 17A.

 The rotary disks 22, 22 'are formed with a plurality of passage openings 22a (an example of a passage for an object to be processed) penetrating in the screw axis direction.

In each of the rotating disks 22, 22 ', the ratio of the total cross-sectional area of all the passage openings 22a to the total cross-sectional area of the internal space of the cylinder 17B (18B) is about 50%. . As shown in Fig. 5 (a), a total of six passage ports 22a force Rotation of rotating disk The passages 22a are arranged in a line at equal intervals along the direction, and each passage 22a has a fan shape gradually expanding in the radial direction from the axis X of the rotating disk, and therefore, the center of the adjacent passage 22a. The angle between them is 60 °. The passage openings 22a are equally spaced from each other by a plurality of pad-shaped members 102 having the same width and extending radially outward from the axis X side. The plurality of rod-shaped members 102 extend radially outward from the axis X side with the same width. As shown in FIG. 5B, each of the through holes 22a has a pair of sides 104, 104 (extending in the radial direction) formed by adjacent rod-shaped members 102, and a cylinder 17B. , 18B, and is formed by sides 106 extending in the circumferential direction adjacent to the inner wall, and arc-shaped corner portions 112, 114, 114 connecting these three sides. Furthermore, the radius r 1 of the arc forming the arc-shaped corner portion 1 1 2 is equivalent to about 12% of the inner diameter of the cylinders 17 B and 18 B (in this embodiment, the inner diameter of the cylinder is about 300 mm). The radius r2 of the arc forming the arc-shaped corner portion 114, 114 corresponds to approximately 7% of the inner diameter of the cylinders 17B, 18B.

 In addition, the fixed disks 21 and 21 'have a passage 21a for the workpiece A having an opening ratio of 50% or more, respectively. The mouth 2 la has a large number of small circular through holes with an average inner diameter of about 20 mm in order to suppress the deformation of the low-rigidity filters 23 and 23 'described later.

 When the workpiece A passes through the rotating discs 22 and 22 'and the fixed discs 21 and 21', it forcibly passes through the narrow passage opening having an aperture ratio of about 5 °%. Therefore, the moving speed of the workpiece A when passing through the passage openings 22a and 21a is about twice the moving speed near the outer periphery of the first transport screw 17. In this way, when the moving speed is suddenly increased by being pushed in under the pressure, plastic deformation occurs in the object to be processed, and as a result, the object to be processed is subjected to a high kneading action.

Further, filters 23 and 23 ′ are provided between the disks 21 and 22 (or 21 ′ and 22 ′) to form a passage having a diameter sufficiently smaller than the passages 21 a and 22 a. When the object A is forcibly sent to the passage 21a of the fixed disks 21, 21 'while being rotated by the rotating disks 22, 22', the object A , Rotating disks 22 and 22 ', fixed disks 21 and 21 and rotating disks It is scoured by the shearing force generated between the discs 22, 22 'and the filters 23, 23'. In addition, while being subjected to the rubbing and kneading action, the object to be treated A also receives a kneading action by being finely dispersed and pulverized by the filters 23 and 23 '. Due to the synergistic effect of various kneading actions that are different from each other, high-precision and good kneading can be performed.

 As shown in FIG. 5, the filters 23 and 23 'are made of a wire mesh 28 and a punching plate 29 having a large number of holes with an inner diameter smaller than the passages 2 la and 22a of the fixed disks 21 and 21'. It is composed of The wire mesh 28 performs the function of rubbing the raw material based on the action of filtration, mixing, and crushing, and the punching plate 29 bears a part of the filtration function, and at the same time, the wire mesh 28 and the fixed disk 21 , 2 1 ′, and prevents the wire mesh 28 from entering the passage 21 a of the fixed disks 21, 21 ′ due to the pressure received from the workpiece A and being deformed.

 More specifically, as shown in FIG. 4, cylindrical bosses 22 1 and 22 1 ′ projecting downstream are provided at the center of each rotating disk 22 and 22 ′. It is formed in. A pair of key grooves 22 b and 22 ′ b facing each other are formed on the inner periphery of the boss portions 22 1 and 22 1 ′ of the respective rotating disks 22 and 22 ′. Since the key groove 17 D corresponding to the rotary disk 22 is formed on the first screw shaft 17 A together with the key 24 a, the rotary disk 22, 22 ′ is fitted to the rotary disk 22. , 22 'and the first screw shaft 17A are connected so as to rotate integrally.

On the outer peripheral surface of the boss portions 22 1 and 22 1 ′, resin bearings 25 and 25 ′ are rotatably slidably fitted on the outer peripheral surface, and further on the outer periphery of the resin bearings 25 and 25 ′. The fixed discs 2 1 and 2 1 ′ are fitted outside. The fixed disks 21 and 21 'are fixed to the cylinders 17B and 18B so that they do not rotate with respect to the cylinders 17B and 18B. Is fixed to the kneading case 26. Further, filters 23 and 23 ′ composed of a wire mesh 28 and a punching plate 29 are interposed between the rotating disks 22 and 22 ′ and the fixed disks 21 and 21 ′. CT / JP98 5

 10 At the downstream of the second kneading mechanism 16 b, a rotation for removing the workpiece A discharged from the second kneading mechanism 16 b in the circumferential direction on the end surface of the fixed disk 2 1 ′ at the downstream end Cutter 30 is located adjacent. The rotary cutter 30 is screwed from a downstream side to an upstream side on a male thread portion 17E formed on the outer periphery of the first screw shaft 17A so as to rotate integrally with the first screw shaft 17A. ing. In this screwing, two rotating discs 22,

2 2 ′ is pressed against the end face 17 C of the reduced diameter portion of the first screw shaft 1 Ί A by the rotating force heater 30, so that the rotating disks 2, 2 2 ′ are the shafts of the first screw shaft 17 A. It is fixed without play in the core direction. At this time, the bosses 2 2 1 and 2 2 1 ′ are formed sufficiently long in the axial direction so that the two bosses 2 2 1 and 2 2 1 ′ directly contact each other in the axial direction. I have. Therefore, the pressing force from the rotary cutter 30 is transmitted to the reduced-diameter portion end face 17C only through the boss portions 221, 221 'of the rotary disks 22, 22, 2'. And, between the rotating disks 22 and 22 'and between the rotating disk 22' and the rotating cutter 30 on the downstream side, the fixed disks 21 and 21 'and the finalizers 23 and 2 The space for accommodating 3 ′ is secured in the axial direction by the contact between the bosses 2 2 1 and 2 2 1 ′.

 At the portion of the first screw shaft 17A extending further downstream from the rotary cutter 30, a lower screw shaft 18A is fitted externally from the downstream together with the key 24b.

 Therefore, when the unit kneading mechanisms 20 and 20 ′ constituting the second kneading mechanism 16 b are taken out of the kneading device for the purpose of inspection and maintenance and disassembled, first, the cylinder 18 B and the cylinder 1 Loosen the bolt 41 connecting 7B, and remove the second transfer screw 18 on the downstream side together with the cylinder 18B from the first transfer screw 17A and the cylinder 17B on the upstream side. Pull out downstream. Then, the rear end of the first screw shaft 17A, the rotary cutter 30, and the mounting bolt 34 are exposed. So, the rotating cutter

30 is rotated in the reverse direction and removed from the first screw shaft 17 A. Further, when the mounting bolts 34 are removed, first, the rotating disk 2 2 ′ on the downstream side and the fixed disk 21 ′, and then on the upstream side The rotating disc 22 and the fixed disc 21 can be withdrawn from the first transport screw 17A to the downstream side.

 The fixed disks 21 and 21 'and the rotating disks 22 and 22' are both

It is made of 7000 series high-strength aluminum. A film made of tetrafluoroethylene is fixed.

 As shown in FIG. 4, the filters 23, 23 ′ are sandwiched between the fixed disk 21 and the kneading casing 26. A clearance around one thigh is provided between the wire mesh 28, 28, which is an upstream member of the filters 23, 23 ', and the rotating disks 22, 22, 22' further upstream. The wire meshes 28 and 28 are made of stainless steel, and are used for kneading lithographic materials.

Particularly preferred are nets in which opineg) is in the range of # 20 to # 50. The punching plate 29 is made of stainless steel having a thickness of about 0.8 to 2 mm, and is formed with through holes having a hole diameter of about l to 5 mm so that the overall opening ratio is about 50%. However, it is not necessary to limit to this. The wire mesh 28 and the punching plate 29 are integrally joined at their peripheral edges by appropriate joining means such as soldering. As the stainless steel used for the wire meshes 28, 28 and the punching plate 29, for example, an austenitic stainless steel having a composition of 18Cr—8Ni may be used. · The mesh size of the wire mesh 28, 28, the plate thickness, hole diameter, opening ratio of the notching plate 29, and the clearance with the rotating disk 22 were determined as described above. This is because, when a stone material is used as the treated material A, the ratio of the ω-based crystal and the j3-based crystal in the stone material can be easily set within a range suitable for the stone test. In other words, if the mesh, the pore diameter, the opening ratio, or the clearance is set out of the above range, the kneading of the object to be processed 処理 becomes insufficient, and the proportion of the system crystal becomes insufficient. This is likely to cause problems such as an insufficient ratio of the ω-based crystal. As a quality of stone, stone containing a lot of ω-type crystals is difficult to dissolve, and stone containing a lot of type-III crystals has good bubbling, so it depends on which type of crystal ratio is important. Various setting values may be selected within the above-described range, and a plurality of types of filters 23 having different shapes according to the various setting values are prepared in advance, and these are used as crystals for both systems. It is desirable to be able to selectively replace and use it according to the ratio request.

As described above, the structure of the first rubbing mechanism 16a provided near the downstream end of the transport screw 11 on the upstream side of the deaeration tank 3 has no transport screw connected to the downstream side. Except for this point, it is the same as the second rubbing mechanism 16b. As shown in FIG. 3, the forming mechanism 5 includes, at the end of the second cylinder 18B, an aperture cylinder 31 pivotally connected around the vertical axis so as to be openable and closable, and an aperture cylinder 31 It is composed of a combination of a rectifying plate 32 with a number of small holes provided on the upstream side and a forming die 33 provided on the downstream side of the drawing cylinder 31.

 As shown in FIG. 1 or FIG. 3, below the kneading / conveying device 4, there is provided a moving device 35 which can support the lower second conveying screw 18 together with the cylinder 18B. If the transfer screw 18 is released from the state of connection with the first transfer screw 17, the position of the second transfer screw 18 can be easily changed back and forth and left and right while being supported by the moving device 35.

 The moving device 35 includes a fixed base 36, a moving base 37 that moves relative to the fixed base 36 in the longitudinal direction of the second transfer screw 18, and a moving base 37 that is a second transfer screw. Pneumatically driven telescopic cylinder 1 38 as a driving means for moving in the longitudinal direction of 18 and a moving table 3 7 on the fixed table 36 along the longitudinal direction of the second transfer screw 18 It comprises a first guide rail 39 for guiding, and a second guide rail 40 for moving the movable base 37 in a direction orthogonal to the first guide rail 39. In the moving device 35, in order to move the second transport screw 18 on the moving table 37 in a direction orthogonal to the above-mentioned direction, it is necessary to manually push the second conveying screw 18 from the side and to move the second guide rail in the lateral direction. Move up 40.

 The automatic shredding device is located on the lower side in the workpiece feeding direction of the multi-stage vacuum extrusion molding device, and the bar-shaped workpiece A extruded from the molding die 33 is reduced to a predetermined size. What is necessary is just to comprise by the well-known cutting device comprised so that it may align, and the automatic stamping machine will shape the workpiece A sent in the predetermined shape at the lower side of the automatic shredding device in the conveyance direction. What is necessary is just to comprise a molding machine and a well-known marking device for marking the surface of the obtained molded body with a predetermined mark or a trade name of stone test.

As a result of an actual machine test in which only the shape of the rotating disk was changed, the multi-stage vacuum extrusion molding machine using the rotating disk 22 shown in Fig. 5 showed that the conventional rotating disk shown in Fig. 7 was used. The rise in the temperature of the material (difference between the temperature of the workpiece A charged into the receiving tank 2 and the material temperature in the forming die 33 as the outlet of the workpiece, that is, the outlet temperature) is usually smaller than that of the stone. Temperature, 5 ° C or more in all cases T / JP98 / 02285

 13 A decrease was confirmed. Another embodiment

 (1) In order to obtain a sufficient rubbing effect and a sufficient effect of suppressing temperature rise, the total cross-sectional area of the passage formed by the rotating member occupies the total cross-sectional area of the internal space of the cylinder. The ratio is in the range of 40 to 60%, and the number of the plurality of processing object passage openings formed by the rotating member may be in the range of 2 to 10 and, for example, FIG. The shape may be as shown in each of FIGS.

In the rotating disk 42 having the shape shown in Fig. 8 (a), the ratio of the total cross-sectional area of the passage port 42a to the total cross-sectional area of the internal space of the cylinder is about 50%. The average of the angles between the centers of 2a is 90 ^; When the rotating disk 42 is used, the outlet temperature of the workpiece A is further reduced as compared with the rotating disk 21.

 In the rotating disk 44 having the shape shown in Fig. 8 (b), the ratio of the total cross-sectional area of the passage port 44a to the total cross-sectional area of the internal space of the cylinder is about 5◦%, The average of the angles between the centers of 44a is 120 °. When the rotating disk 44 is used, the outlet temperature of the processing object A is further reduced as compared with the rotating disk 42.

 Furthermore, a rotating disk 46 having the shape shown in FIG. 8 (c) is also feasible. The passage 46a of the rotating disk 46 has a circular shape instead of a sector shape.

 (2) In each of the above embodiments, a disk-shaped rotating disk is used as the rotating member. However, the passage port does not need to be a through hole formed inside the rotating member, and the rotating member is a cylinder. The passage opening formed in cooperation with the inner wall, for example, a cross-shaped rotating member 46 as shown in FIG. 9 (a) or a one-character shaped rotating member 48 as shown in FIG. 9 (b) is also required. It is feasible.

 (3) The degassing tank 3 and the receiving tank 2 are not limited to those configured separately, and both the mixing region and the degassing region may be configured as an integrated tank.

 (4) In the above embodiment, the rubbing mechanism 16 provided with two unit kneading mechanisms 20 is shown. However, the rubbing mechanism may be provided with three or more unit kneading mechanisms 20.

(5) As the kneading / conveying device 4, a plurality of conveying screws 17 and 18 are installed side by side as shown in Fig. 6, and two or more workpieces A sent out of the degassing tank 3 are used. Duplicate It is also possible to adopt a double-screw type provided in a plurality of rows so that processing is performed in parallel in several paths. In this case, as shown in Fig. 5 (a), the filter 23 is also connected with a plurality of single-story type filters that process the workpiece A through one processing path at a part of its periphery. It can be used as an integrated double screen type. Industrial applicability

 INDUSTRIAL APPLICABILITY The multistage vacuum kneading and forming apparatus according to the present invention can be used for oils and fats, foods, chemicals, and the like, in addition to lithographic raw materials.

Claims

The scope of the claims 1. A dispensing device with the following configuration:  A cylinder having a receiving portion for receiving the object to be processed and an outlet for the object to be processed; a rotary screw provided in the cylinder; the rotary screw directs the received object to be processed toward the outlet of the object to be processed. Extrudable;  A fixing member that is non-rotatably fixed in the cylinder on the downstream side of the rotary screw; and a rotation that is disposed between the rotary screw and the fixing member and that is driven to rotate in accordance with the rotation of the rotary screw. A rubbing mechanism provided with a member, the fixed member and the rotating member each form a plurality of workpiece passages that allow the workpiece to move downstream;  The dispensing device, wherein the number of the plurality of workpiece passage ports formed by the rotating member is in a range of 2 to 20.  2. The kneading apparatus according to claim 1, wherein the number of the plurality of processing object passage openings formed by the rotating member is in a range of 2 to 10.  3. The ratio of the total cross-sectional area of the plurality of workpiece passage openings formed by the rotating member to the total cross-sectional area of the internal space of the cylinder is within a range of 40 to 60%. 3. The dispensing device according to paragraph 1 or 2.  4. Each of the plurality of processing object passage openings formed by the rotating member has a fan shape that gradually widens radially outward from a rotation axis side of the rotating member. The kneading device according to any one of the above.  5. The plurality of workpiece passage ports formed by the rotating member are equally spaced by a plurality of rod-shaped members having the same width and extending radially outward from the rotation axis side. 5. The dispensing device according to claim 4, wherein:  6. The dispensing apparatus according to claim 5, wherein the plurality of rod-shaped members extend radially outward from the rotation shaft center side with the same width. 7. The rotating member has a disk-shaped outer shape, and the plurality of processing object passage openings formed by the rotating member are through holes formed in the disk-shaped rotating member. 7. The dispensing device according to any one of items 1 to 6. 8. The through holes are six through holes arranged along the circumferential direction of the rotating member, and each of these through holes has a pair of radially extending sides formed by adjacent rods. And a side extending in the circumferential direction adjacent to the inner wall of the cylinder, and an arc-shaped side connecting these three sides. The radius of the arc-shaped side is the inner diameter of the cylinder. 8. The dispensing device according to claim 7, wherein the ratio is more than 1/6 of the above.  9. The dispensing device according to any one of claims 1 to 8, wherein the fixing member includes a mesh filter and a fixing plate that supports the filter from a downstream side. 10. The dispensing apparatus according to any one of claims 1 to 9, further comprising a vacuum device for degassing the object at a predetermined position in the cylinder.