JP2014188915A - Agitation method and device for viscous material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an agitation method and device for a viscous material capable of agitating a viscous material with high viscosity evenly at short time.SOLUTION: The agitation method for a viscous material comprises the steps of: storing a viscous material including a liquid resin raw material and a solid filler in a deformable bag-like container; and agitating the stored viscous material by deforming the bag-like container repeatedly. An agitation device 1 for a viscous material comprises: a bag-like container 10 which is deformable and which stores a viscous raw material S including the liquid resin raw material and the solid filler; an engagement member 91 engaging an opening of the bag-like container 10; and a deformation application member 2 deforming the bag-like container 10 repeatedly.

Description

  The present invention relates to a stirring method and a stirring device for stirring a viscous material containing a liquid resin raw material and a solid filler.

  Urethane foam moldings are used in various fields such as automobiles and electronic devices as sound absorbing materials and vibration absorbing materials. The urethane foam molded article has a large number of cells (bubbles) inside. For this reason, the thermal conductivity of the urethane foam molding is small. Therefore, when it arrange | positions around an engine, a motor, etc. with a heat_generation | fever, heat | fever accumulates in a urethane foam molding, and there exists a possibility of causing the temperature rise of an engine, a motor, etc. In order to solve such a problem, it is necessary to improve the heat dissipation of the urethane foam molded article. For example, in the urethane foam molded products disclosed in Patent Documents 1 and 2, heat dissipation is improved by blending solid fillers such as magnetic particles to form a heat transfer path in the foam molded product. I am letting. The urethane foam molded article is manufactured by foam molding a mixed raw material obtained by mixing a foamed urethane resin raw material containing a polyol component, a polyisocyanate component, and the like with a filler in a magnetic field.

JP 2009-73159 A JP 2011-225833 A JP 2005-509697 A

  In order to disperse the filler in the foamed urethane resin raw material, the mixed raw material is prepared by adding the foamed urethane resin raw material and the filler to the container and then stirring with a stirring blade. The foamed urethane resin raw material expands during foam molding to increase its volume. In other words, the volume of the urethane foam resin raw material is small at the stage of preparing the mixed raw material before foam molding. For this reason, the compound which mix | blended the filler with the foaming urethane resin raw material exhibits a slurry form, and has a high viscosity.

  When such a compound is stirred using a stirring blade, a large torque is required. Further, the filler may be crushed by the shearing force of the stirring blade. In addition, uneven stirring is likely to occur due to retention or the like. Moreover, it is necessary to wash | clean a stirring blade and a container whenever a mixed raw material is prepared. For this reason, the burden of cleaning work is large. Moreover, it is difficult to automate a series of processes for producing a urethane foam molded article. In addition, since a solvent is used for cleaning, the environmental impact becomes a problem. Further, since the blend has a high viscosity, it tends to adhere to a stirring blade or a container. Therefore, the loss of raw materials is large. Further, after stirring, the mixed raw material must be scraped out of the container using a spatula or the like, which is troublesome.

  As a method for preparing the mixed raw material, there is a method in which a filler is added in advance to a polyol component, and a polyisocyanate component is added thereto and stirred. However, in the said method, there exists a possibility that reaction of a polyol component and a polyisocyanate component may be inhibited, when a polyol component osmose | permeates a filler or a catalyst adsorb | sucks to a filler. Thereby, the physical property of the urethane foam molding obtained will fall.

  This invention is made | formed in view of such a situation, and makes it a subject to provide the stirring method and stirring apparatus of a viscous material which can stir a highly viscous viscous material uniformly in a short time. .

  (1) In order to solve the above problems, the viscous material agitation method of the present invention (hereinafter appropriately referred to as “the agitation method of the present invention”) is an agitation of a viscous material containing a liquid resin raw material and a solid filler. It is a method, and has a storing step of storing the viscous material in a deformable bag-shaped container, and a stirring step of stirring the stored viscous material by repeatedly deforming the bag-shaped container. It is characterized by.

  In the stirring method of the present invention, a deformable bag-like container is used as a container for containing the viscous material. Then, the bag-like container is repeatedly deformed to mix the contained viscous material. Thereby, for example, in the case of a viscous material containing a foamed urethane resin raw material and a filler, stirring can be completed in a short time of about several seconds to several tens of seconds. That is, the stirring can be completed before the foam curing reaction of the foamed urethane resin material proceeds.

  According to the stirring method of the present invention, conventionally used stirring blades are not necessary. For this reason, uneven stirring due to retention or the like is unlikely to occur. Further, there is no possibility that the filler is crushed by the shearing force of the stirring blade. Furthermore, it is not necessary to wash the stirring blade every time stirring is performed. According to the stirring method of the present invention, after the stirring is finished, the viscous material may be squeezed out from the bag-like container. At this time, by replacing the bag-like container for each stirring operation, the trouble of washing the container can be saved. As a result, the burden of the cleaning work can be greatly reduced, and the environmental impact is reduced. Moreover, it is easy to automate a series of steps required for manufacturing a resin molded product, such as stirring of raw materials → molding. In addition, the viscous material is less likely to remain in the bag-like container. Therefore, the loss of raw materials can be reduced.

  In the stirring method of the present invention, the viscous material to be stirred may be anything as long as it contains a liquid resin raw material and a solid filler. For example, a highly viscous material containing a foamed urethane resin raw material and a filler such as magnetic particles can be used. Here, the order of accommodation of the liquid resin raw material and the solid filler in the bag-like container is not particularly limited. Both may be charged simultaneously or separately. In addition to the resin component, the resin raw material contains a catalyst, a foaming agent, a foam stabilizer, a plasticizer, a crosslinking agent, a flame retardant, an antistatic agent, a viscosity reducing agent, a stabilizer, a filler, a colorant, and the like. May be.

  (2) Preferably, in the configuration of (1) above, the bag-like container is preferably configured to be elastically deformable.

  The bag-like container having this configuration is restored to its original shape after being unloaded. For this reason, wrinkles, creases, and the like are unlikely to occur in the bag-like container. Therefore, the bag-like container can be repeatedly deformed and stirred uniformly in a short time.

  (3) Preferably, in the above configuration (1) or (2), the bag-like container is made of an elastomer.

  Elastomers include cross-linked rubbers and thermoplastic elastomers. According to this configuration, an elastically deformable bag-like container can be easily realized. The elastomer is excellent in stretchability. Therefore, the viscous material can be easily accommodated by extending the opening of the bag-like container. Examples of the elastomer suitable for the bag-like container include natural rubber, nitrile rubber, olefin-based thermoplastic elastomers such as polyethylene and polypropylene, and polyvinyl chloride-based thermoplastic elastomers.

  (4) Preferably, in any one of the constitutions (1) to (3), the resin raw material is a foamed resin raw material.

  Examples of the foamed resin material include a foamed urethane resin material, a foamed polyethylene resin material, and a foamed polypropylene resin material. The foamed resin material is cured as the foaming reaction proceeds. For this reason, it is desirable to complete the stirring before the foam curing reaction starts. According to the stirring method of the present invention, stirring can be completed in a short time by squeezing and mixing by deformation of the bag-like container. Therefore, it is suitable for stirring the viscous material containing the foamed resin raw material.

  (5) Preferably, in any one of the constitutions (1) to (4), the foamed resin raw material is a foamed urethane resin raw material.

  According to this structure, the high-viscosity viscous material containing the above-mentioned urethane foam raw material and filler can be uniformly stirred in a short time. Therefore, a urethane foam molded article having excellent characteristics according to the type of filler can be produced by foam molding the viscous material after stirring.

  In this configuration, it is not necessary to add a filler in advance to the polyol component of the foamed urethane resin material. For this reason, there is little possibility that the polyol component will soak into the filler or the catalyst will be adsorbed on the filler. Therefore, when the viscous material stirred by the stirring method of this configuration is used, a urethane foam molded article having good physical properties in which the polyol component and the polyisocyanate component are sufficiently reacted can be produced.

  (6) Preferably, in the configuration of (4) or (5) above, the blending ratio of the foamed resin raw material and the filler in the viscous material before stirring is 1: 0.2 to 2.0 in volume ratio. It is better to have a configuration of

  As described above, the volume of the foamed resin raw material is small before the foaming reaction and increases with the progress of the foaming reaction. In the viscous material before the foaming reaction, when the blending ratio of the foamed resin raw material and the filler is 1: 0.2 to 2.0 by volume ratio, the viscosity of the viscous material becomes high. For example, urethane foam molding with excellent heat dissipation due to orientation of magnetic particles, from a viscous material in which a foamed urethane resin raw material and a filler containing magnetic particles are blended in a volume ratio of 1: 0.2 to 2.0. The body can be manufactured. In this case, the viscous material is in the form of a slurry and has a high viscosity. However, according to the stirring method of the present invention, even a highly viscous material can be stirred uniformly in a short time.

  Furthermore, when the volume ratio of the foamed urethane resin raw material in the viscous material and the filler containing magnetic particles is in the range of 1: 0.4 to 1.5, the heat dissipation, sound absorption, and vibration absorption are well balanced. A urethane foam molding can be produced. For example, when the blending ratio of the filler containing magnetic particles is smaller than 0.4, the heat dissipation is gradually lowered. On the other hand, if it exceeds 1.5, the sound absorbing property and the vibration absorbing property are gradually lowered.

  (7) Preferably, in any one of the constitutions (1) to (6), the filler preferably comprises magnetic particles.

Magnetic particles include iron, nickel, cobalt, gadolinium, stainless steel, magnetite, maghemite, manganese zinc ferrite, barium ferrite, strontium ferrite and other ferromagnetic materials, and MnO, Cr ₂ O ₃ , FeCl ₂ , MnAs and other strong materials. Examples thereof include magnetic materials and alloys using them. According to this configuration, by molding the obtained viscous material in a magnetic field, it is possible to manufacture a resin molded product having magnetic particles that are connected to each other and oriented.

  Further, the filler in this configuration may be composite particles obtained by combining magnetic particles and other particles. For example, in the case of composite particles in which thermally conductive particles having high thermal conductivity and magnetic particles are combined, the thermal conductivity of the resin molded product to be manufactured can be further improved. Examples of the thermally conductive particles include carbon materials such as graphite and carbon fiber, aluminum, gold, silver, copper, and alloys based on these materials. For example, expanded graphite, which is a kind of graphite, has a substance that generates gas by heating inserted between scaly graphite layers. When heat is applied to expanded graphite, the generated gas expands the layers and forms a stable layer against heat and chemicals. For this reason, when expanded graphite is included, the flame retardance of a resin molded product improves.

  (8) Preferably, in any one of the configurations (1) to (7), the filler preferably includes a heat conductive particle.

  The heat conductive particles may be included alone or as composite particles. What is necessary is just to use the same thing as what was illustrated in said (7) as a heat conductive particle. According to this configuration, by molding the obtained viscous material, a resin molded product having excellent thermal conductivity can be produced.

  (9) The viscous material stirring device of the present invention (hereinafter appropriately referred to as “the stirring device of the present invention”) is a stirring device for stirring a viscous material containing a liquid resin raw material and a solid filler. A deformable bag-like container that accommodates the viscous material, a locking member that locks the opening of the bag-like container, and a deformation imparting member that repeatedly deforms the bag-like container. The accommodated viscous material is agitated by repeatedly deforming the bag-like container with the applying member.

  The stirring device of the present invention includes a deformable bag-like container as a container for containing a viscous material. Then, the bag-like container is repeatedly deformed by the deformation imparting member, and the accommodated viscous material is mixed. Thereby, for example, in the case of a viscous material containing a foamed urethane resin raw material and a filler, stirring can be completed in a short time of about several seconds to several tens of seconds. That is, the stirring can be completed before the foam curing reaction of the foamed urethane resin material proceeds.

  Similar to the stirring method of the present invention, according to the stirring device of the present invention, the viscous material can be stirred without using the stirring blade. For this reason, uneven stirring due to retention or the like is unlikely to occur. Further, there is no possibility that the filler is crushed by the shearing force of the stirring blade. Furthermore, it is not necessary to wash the stirring blade every time stirring is performed. According to the stirring device of the present invention, after the stirring is completed, the viscous material may be squeezed out from the bag-like container. At this time, by replacing the bag-like container for each stirring operation, the trouble of washing the container can be saved. As a result, the burden of the cleaning work can be greatly reduced, and the environmental impact is reduced. Moreover, it is easy to automate a series of steps required for manufacturing a resin molded product, such as stirring of raw materials → molding. In addition, the viscous material is less likely to remain in the bag-like container. Therefore, the loss of raw materials can be reduced.

  In the stirring device of the present invention, the viscous material to be stirred may be anything as long as it contains a liquid resin raw material and a solid filler. For example, a highly viscous material containing a foamed urethane resin raw material and a filler such as magnetic particles can be used. In addition to the resin component, the resin raw material contains a catalyst, a foaming agent, a foam stabilizer, a plasticizer, a crosslinking agent, a flame retardant, an antistatic agent, a viscosity reducing agent, a stabilizer, a filler, a colorant, and the like. May be.

  (10) Preferably, in the configuration of (9), the deformation imparting member includes a support member that supports the bottom of the bag-like container, a drive member that is connected to the support member and reciprocates the support member, And the bag-like container is repeatedly stretched and deformed by the reciprocating motion of the support member to stir the viscous material.

  The bottom of the bag-like container moves as the support member reciprocates. On the other hand, the opening of the bag-like container is locked by the locking member and does not move. For this reason, the bag-like container is deformed so as to expand and contract in the reciprocating direction of the support member. According to this configuration, the bag-like container can be greatly deformed between the locking member and the support member. Thereby, the accommodated viscous material can be moved greatly, and stirring with a resin raw material and a filler is accelerated | stimulated.

  (11) Preferably, in the configuration of the above (10), the support member may include a rod that abuts against the bottom of the bag-like container.

  According to this configuration, the bottom of the bag-like container is pressed by the rod and deformed into a wave shape. A plurality of recesses are formed inside the bottom portion of the bag-like container with a pressing portion from the rod interposed therebetween. When the bag-like container expands and contracts due to the reciprocating movement of the support member, the accommodated viscous material moves between the recess defined by the rod and the other region. Thereby, stirring with a resin raw material and a filler is accelerated | stimulated.

  (12) Preferably, in the configuration of (11), the rod may be configured to be rotatable in a plane perpendicular to the reciprocating direction of the support member.

  For example, when the support member reciprocates in the vertical direction, the rod rotates in a horizontal plane. When the rod rotates, the pressing portion at the bottom of the bag-like container is changed. Then, the deformation | transformation aspect (formation aspect of a recessed part) of the bottom part of a bag-shaped container changes. As a result, the viscous material is less likely to stay at the bottom of the bag-like container, and the stirring unevenness is suppressed.

  (13) Preferably, in the configuration according to any one of the above (10) to (12), it is preferable to further include a chuck portion that holds a portion of the bag-like container close to the opening.

  The deformation of the bag-like container is restricted at the portion sandwiched by the chuck portion. For this reason, according to the present configuration, the bag-like container mainly deforms and expands between the chuck portion and the support member. Moreover, in the site | part pinched by the chuck | zipper part, the space inside a bag-shaped container becomes narrow by that much. Thereby, even if a bag-like container repeats expansion and contraction, the pop-out of the accommodated viscous material is suppressed.

  (14) Preferably, in any one of the configurations (9) to (13), the bag-like container is configured to be elastically deformable.

  Similar to the configuration of (2) above, the bag-shaped container of this configuration is restored to its original shape after being unloaded. For this reason, wrinkles, creases, and the like are unlikely to occur in the bag-like container. Therefore, the bag-like container can be repeatedly deformed and stirred uniformly in a short time.

  (15) Preferably, in any one of the above configurations (9) to (14), the bag-like container is made of an elastomer.

  Similar to the configuration (3), according to this configuration, an elastically deformable bag-like container can be easily realized. The elastomer is excellent in stretchability. Therefore, the viscous material can be easily accommodated by extending the opening of the bag-like container.

It is a perspective view of the stirring apparatus of embodiment. It is a right view of the same stirring apparatus. It is a schematic diagram which shows a motion of the stirring apparatus. FIG. 3A shows a front view of the first stage of stirring. FIG. 3B shows a front view of the second stage of stirring. FIG. 3C shows a front view of the third stage of stirring. FIG. 3D shows a front view of the fourth stage of stirring.

  Hereinafter, an embodiment of the viscous material stirring method of the present invention and an embodiment of the viscous material stirring apparatus of the present invention will be described together.

<Configuration of stirring device>
First, the configuration of the viscous material stirring device of the present embodiment will be described. In FIG. 1, the perspective view of the stirring apparatus of this embodiment is shown. FIG. 2 shows a right side view of the stirring device. In FIG. 1, the frame 9 is shown in a transparent manner. In FIG. 1, the balloon 10 is omitted.

  As shown in FIGS. 1 and 2, the stirring device 1 includes a balloon 10, a deformation imparting member 2, and a gantry 9. The deformation imparting member 2 includes a base 20, a disk 22, an arm 23, a guided member 24, a guide member 25, a rotation motor accommodating portion 26, a balloon support portion 27, a vertical movement motor M1, And a rotation motor M2.

  The base 20 has an L-shaped plate shape when viewed from the right side. The vertical movement motor M <b> 1 is attached to the rear surface of the base 20. The disc 22 is disposed on the front side of the base 20. The rotation shaft m1 of the vertical movement motor M1 passes through the base 20 and is connected to the center of the disk 22 in the radial direction.

  The guide member 25 is disposed on the front surface of the base 20. The guide member 25 has a prismatic shape extending in the vertical direction. The guided member 24 has a rectangular parallelepiped shape. The guided member 24 is movable in the vertical direction with respect to the guide member 25. Further, the guided member 24 is attached to the guide member 25 so as not to drop off on the front side and the left and right sides.

  The arm 23 has a prismatic shape. The lower end of the arm 23 is rotatably attached to the peripheral edge of the disc 22. The upper end of the arm 23 is rotatably attached to the guided member 24. The base 20, the disk 22, the arm 23, the guided member 24, the guide member 25, and the vertical movement motor M1 are included in the concept of the driving member in the present invention.

  The rotation motor housing portion 26 includes a top plate 260, a bottom plate 261, four struts 262, a collar 263, and a connecting piece 264. The connecting piece 264 has a cylindrical shape. The connecting piece 264 is disposed on the upper surface of the guided member 24. The bottom plate 261 has a rectangular plate shape. The bottom plate 261 is disposed on the upper surface of the connecting piece 264. The top plate 260 has a rectangular plate shape. The top plate 260 is disposed on the upper side of the bottom plate 261 with a predetermined interval. The four struts 262 are interposed between the bottom plate 261 and the top plate 260. The four struts 262 are arranged at the four corners of the bottom plate 261 (top plate 260). The support column 262 has a cylindrical shape. The collar 263 has a cylindrical shape. The collar 263 is disposed on the top surface of the top plate 260. The rotation motor M <b> 2 is interposed between the bottom plate 261 and the top plate 260. The rotation motor M <b> 2 is surrounded by four struts 262. The rotation motor M2 rotates the balloon support 27 in a horizontal plane.

  The balloon support unit 27 includes a disk 270 and three pressing rods 271. The disc 270 is disposed on the upper surface of the collar 263. A rotation shaft m2 of the rotation motor M2 passes through the top plate 260, passes through the inner side in the radial direction of the collar 263, and is connected to the radial center of the disc 270. The three pressing rods 271 are disposed on the upper surface of the disc 270. Each of the three pressing rods 271 has a columnar shape extending in the horizontal direction. The diameter of the pressing rod 271 is 10 mm. The three pressing rods 271 are arranged in parallel with each other at an interval of 50 mm. The balloon support portion 27 is included in the concept of the support member in the present invention.

  The gantry 9 includes four support columns 90, a top plate 91, and a chuck portion 92. The support column 90 has a prismatic shape extending in the vertical direction. The four struts 90 surround the deformation imparting member 2. The top plate 91 has a rectangular plate shape. The top plate 91 is supported from below by four support columns 90. The top plate 91 is disposed on the upper side of the deformation imparting member 2. The top plate 91 includes a balloon attachment hole 910 and four protrusions 911. The balloon attachment hole 910 penetrates the top plate 91 in the vertical direction. The four protrusions 911 protrude from the top surface of the top plate 91. The four protrusions 911 are arranged around the balloon attachment hole 910 so as to be separated by 90 °. The top plate 91 is included in the concept of the locking member in the present invention.

  The chuck portion 92 has a pair of left and right brackets 93, a pair of left and right air cylinders 94, a pair of left and right clamping rods 95, and a guide member 96. The right side bracket 93 has a flat plate shape extending in the front-rear direction and having a central portion protruding rightward. The right bracket 93 is installed between the right front corner column 90 and the right rear corner column 90. The left bracket 93 has a flat plate shape extending in the front-rear direction and having a central portion protruding leftward. The left bracket 93 is installed between a support 90 at the left front corner and a support 90 at the left rear corner.

  The air cylinder 94 is fixed to the bracket 93. The air cylinder 94 has a cylinder body 940 and a shaft 941. The right air cylinder 94 is disposed at the center of the right bracket 93. In the right air cylinder 94, the shaft 941 penetrates the bracket 93 from the cylinder body 940 and can move to the left. In the left air cylinder 94, the shaft 941 penetrates the bracket 93 from the cylinder body 940 and can move to the right.

  The sandwiching rod 95 has a prismatic shape extending in the front-rear direction. The pair of left and right clamping rods 95 oppose each other in the left-right direction. The right clamping rod 95 is fixed to the left end of the right shaft 941. The left sandwiching rod 95 is fixed to the right end of the left shaft 941.

  The guide member 96 has a flat plate shape extending in the left-right direction. The guide member 96 is installed between the right rear corner column 90 and the left rear corner column 90. A recess extending in the left-right direction is formed on the front surface of the guide member 96. The rear end of the sandwiching rod 95 is accommodated in the recess.

  The balloon 10 is made of natural rubber and has a flask shape that opens upward. The balloon 10 can be elastically deformed. The balloon 10 is disposed between the deformation imparting member 2 and the top plate 91. Specifically, the bottom of the balloon 10 is supported from below by three pressing rods 271. The bottom surface of the balloon 10 is deformed in a wave shape by the contact of the three pressing rods 271. Two concave portions 100 are formed inside the bottom portion of the balloon 10 with the pressing portion from the pressing rod 271 interposed therebetween. The opening of the balloon 10 penetrates the balloon attachment hole 910 and protrudes above the top plate 91. The opening of the balloon 10 is folded radially outward on the upper side of the top plate 91 and covered with four protrusions 911. In this way, the opening of the balloon 10 is fixed to the top plate 91. The balloon 10 is included in the concept of the bag-like container in the present invention.

  The balloon 10 contains a viscous material S. The viscous material S includes a foamed urethane resin raw material and composite particles in which stainless steel particles are attached to the surface of natural graphite particles. The foamed urethane resin raw material contains a crosslinking agent, a foaming agent, a catalyst, and the like in addition to a resin component composed of a polyol component and a polyisocyanate component. The mixing ratio of the foamed urethane resin raw material and the composite particles is 1: 1 by volume. The composite particles are included in the concept of solid filler in the present invention. Storage of the viscous material S was performed by first charging the powder of the composite particles into the balloon 10, and then charging the pre-prepared foamed urethane resin material into the balloon 10 (corresponding to the storing step of the stirring method). . The urethane foam raw material is prepared by blending the polyisocyanate component diphenylmethane diisocyanate (MDI) with the premix polyol (POL) containing the polyol component polyether polyol, crosslinking agent, foaming agent, and catalyst. did.

<Motion of the stirring device (corresponding to the stirring step of the stirring method)>
Next, the movement of the stirring device of this embodiment will be described. When the vertical movement motor M1 is driven, the disc 22 rotates around the rotation axis m1 of the vertical movement motor M1. For this reason, the lower end of the arm 23 also rotates in the same manner as the disk 22. On the other hand, the guided member 24 is movable only in the vertical direction with respect to the guide member 25. For this reason, the upper end of the arm 23 and the guided member 24 reciprocate in the vertical direction. Accordingly, the rotation motor accommodating portion 26, the balloon support portion 27, and the rotation motor M2 also reciprocate in the vertical direction in the same manner as the guided member 24. Thereby, the bottom part of the balloon 10 reciprocates up and down. Further, when the rotation motor M2 is driven, the balloon support portion 27 rotates in the horizontal plane. Thereby, the pressing part of the bottom part of the balloon 10 is changed.

  FIG. 3 schematically shows the movement of the stirring device of the present embodiment. FIG. 3A shows a front view of the first stage of stirring. FIG. 3B shows a front view of the second stage of stirring. FIG. 3C shows a front view of the third stage of stirring. FIG. 3D shows a front view of the fourth stage of stirring. For convenience of explanation, the bracket 93 and the air cylinder 94 are omitted in FIGS. 3A to 3D.

  First, the air cylinder 94 is driven to move the left shaft 941 to the right and the right shaft 941 to the left (see FIG. 1). Then, as shown in FIGS. 3A to 3D, the opposing holding rods 95 are pushed by the shaft 941 and approach each other, and hold the upper part of the balloon 10 from the left-right direction. In this way, the balloon 10 is sealed. Next, when the vertical movement motor M1 (see FIGS. 1 and 2) is driven, the bottom of the balloon 10 reciprocates in the vertical direction. On the other hand, the opening of the balloon 10 is fixed to the top plate 91. Further, the upper portion of the balloon 10 is held by a pair of holding rods 95. For this reason, the balloon 10 is elastically deformed so as to expand and contract in the vertical direction. Here, as shown in FIG. 3C, when the bottom of the balloon 10 is pushed upward and the balloon 10 is deflated, the balloon 10 tends to expand in the horizontal direction. However, a chuck portion 92 is disposed on the gantry 9. That is, the balloon 10 is sealed with a pair of clamping rods 95. Therefore, jumping out of the accommodated viscous material S is suppressed. Moreover, the balloon support part 27 rotates in a horizontal plane at every predetermined time. Thereby, the pressing part of the bottom part of the balloon 10 is changed.

  Thus, the stirring device 1 stirs the viscous material S by expanding and contracting the balloon 10 in the vertical direction. Stirring was performed for 6 seconds by repeating reciprocation 3 times per second. After the stirring, the balloon 10 was removed from the top plate 91, and the viscous material S was squeezed out from the opening.

<Effect>
Next, the effect of the viscous material stirring method and the stirring device of this embodiment will be described. The stirring device 1 according to the present embodiment includes a natural rubber balloon 10 as a container for storing the viscous material S. Then, the balloon 10 is repeatedly stretched and deformed by the deformation applying member 2, and the viscous material S is mixed. According to the stirring device 1, the stirring of the viscous material S can be completed in a short time of 6 seconds. Therefore, stirring can be completed before the foam hardening reaction of the viscous material S proceeds. The balloon 10 is made of natural rubber and can be elastically deformed. For this reason, even if it expands and contracts, wrinkles, creases, and the like hardly occur in the balloon 10. Therefore, the viscous material S can be stirred uniformly in a short time. Moreover, the balloon 10 is excellent in elasticity. Therefore, the viscous material S can be easily accommodated by extending the opening of the balloon 10.

  According to the stirring device 1, the viscous material S is stirred without using a stirring blade. For this reason, uneven stirring due to retention or the like is unlikely to occur. Further, there is no possibility that the composite particles are pulverized by the shearing force of the stirring blade. Furthermore, it is not necessary to wash the stirring blade every time stirring is performed. Further, after the stirring is completed, the viscous material S may be squeezed out from the balloon 10. Here, the balloon 10 is replaced for each stirring operation. Therefore, there is no need to clean the balloon 10. As a result, the burden of the cleaning work can be greatly reduced, and the environmental impact is reduced. Moreover, it is easy to automate a series of processes for producing the urethane foam molded body. Further, the viscous material S remaining in the balloon 10 can be reduced by squeezing out the viscous material S from the balloon 10. Thereby, the loss of the viscous material S can be reduced.

  The deformation imparting member 2 includes a balloon support portion 27. The balloon support portion 27 has three pressing rods 271. The bottom of the balloon 10 is pressed by the pressing rod 271 and deformed into a wave shape. Two concave portions 100 are formed inside the bottom portion of the balloon 10 with the pressing portion from the pressing rod 271 interposed therebetween. When the balloon 10 expands and contracts due to the reciprocating motion of the balloon support portion 27, the accommodated viscous material S moves between the concave portion 100 partitioned by the pressing rod 271 and other regions. Thereby, stirring with a resin raw material and a filler is accelerated | stimulated. Further, the pressing rod 271 rotates in the horizontal plane. Thereby, the pressing part of the bottom part of the balloon 10 is changed. Then, the deformation | transformation aspect (formation aspect of the recessed part 100) of the bottom part of the balloon 10 changes. As a result, the viscous material S is less likely to stay at the bottom of the balloon 10, and uneven stirring is suppressed.

  The gantry 9 includes a chuck portion 92 having a pair of clamping rods 95. The upper part of the balloon 10 is clamped by a pair of clamping rods 95 from both the left and right sides. The deformation of the balloon 10 is restricted at the portion held by the holding rod 95. For this reason, the balloon 10 is expanded and contracted mainly between the chuck portion 92 and the balloon support portion 27. Further, the space inside the balloon 10 is narrowed by a corresponding amount at the portion sandwiched by the sandwiching rod 95. That is, the balloon 10 is sealed by the sandwiching rod 95. Thereby, even if the balloon 10 repeats a large expansion / contraction deformation, the pop-up of the accommodated viscous material S is suppressed.

  In the stirring device 1, the viscous material S containing the foamed urethane resin raw material and the composite particles was stirred. The mixing ratio of the foamed urethane resin material and the composite particles in the viscous material S is 1: 1 by volume. The viscous material S is in the form of a slurry and has a high viscosity. According to the stirring device 1, even such a highly viscous material S can be uniformly stirred in a short time.

  The composite particles have natural graphite particles and stainless steel particles attached to the surface thereof. Natural graphite particles that form the core of the composite particles are thermally conductive particles and have a large thermal conductivity. However, since it is a non-magnetic material, it is not oriented alone even when a magnetic field is applied. However, stainless steel particles of magnetic particles are attached to the surface of the natural graphite particles. For this reason, when the viscous material S after stirring is foam-molded in a magnetic field, the stainless steel particles constituting the composite particles tend to be oriented along the lines of magnetic force. Thereby, the composite particles themselves are oriented along the magnetic field lines. Thus, by making the filler into composite particles, the thermally conductive particles that are not originally oriented can be oriented by utilizing the magnetic field orientation of the magnetic particles attached to the surface.

  Moreover, when the composite particles are blended as a filler, the thermal conductivity of the urethane foam molded article to be produced can be increased as compared with an embodiment containing only the same amount of magnetic particles. Moreover, even if a compounding quantity is comparatively small, the improvement effect of heat conductivity can be acquired. Therefore, the influence on the physical properties of the urethane foam molded article due to the blending of the filler can be reduced. Further, by reducing the blending amount of the filler, it is possible to reduce the weight of the urethane foam molded body and reduce the cost.

  According to the stirring method of this embodiment, it is not necessary to add composite particles in advance to the polyol component of the foamed urethane resin material. For this reason, there is little possibility that the polyol component permeates into the composite particles or the catalyst is adsorbed onto the composite particles. In particular, in the stirring method of this embodiment, the polyol component and the polyisocyanate component are mixed in advance. For this reason, the penetration of the polyol component into the composite particles and the adsorption of the catalyst can be further suppressed. Therefore, when the viscous material S stirred by the stirring method and the stirring device 1 of the present embodiment is used, a urethane foam molded article having good physical properties in which the polyol component and the polyisocyanate component are sufficiently reacted can be produced.

<Others>
The embodiment of the viscous material stirring method and the stirring device of the present invention has been described above. However, the embodiment is not particularly limited to the above embodiment. Various modifications and improvements that can be made by those skilled in the art are also possible.

  In the above embodiment, a natural rubber balloon is used as the bag-like container. However, the material and shape of the bag-like container are not particularly limited as long as they can be deformed. The material and shape of the bag-like container may be appropriately determined in consideration of reactivity with the viscous material to be accommodated and stirring ability. For example, the bag-like container may be made of cloth or resin. The shape of the balloon may be a pear shape or the like in addition to the flask shape in the above embodiment.

  In the above-described embodiment, the deformation imparting member that deforms the bag-shaped container includes a drive member (base, disk, arm, guided member, guide member, and vertical movement motor), a support member (balloon support portion), Consists of. However, the configuration of the deformation imparting member is not limited to the above embodiment. The deformation imparting member may be one that repeatedly compresses and deforms from the surroundings in addition to one that stretches and deforms the bag-like container in the vertical direction.

  As the drive member, an air cylinder may be used in addition to the crank mechanism as in the above embodiment. In this case, the stroke and frequency of the reciprocating motion are not particularly limited. In order to uniformly stir the viscous material in a shorter time, it is preferable to reduce the reciprocating stroke and increase the frequency. Also, the stirring time is not particularly limited.

  As the support member, only a plate-shaped member may be used. That is, there is no need for the pressing rod. When only a plate-like member is used, the shape of the surface that contacts the bottom of the bag-like container may be formed in an uneven shape. On the other hand, when the pressing rod is arranged, the size, shape, number, arrangement form and the like of the pressing rod are not particularly limited. Moreover, in the said embodiment, the supporting member was rotated in the horizontal surface. The rotation speed, the timing for rotation, and the like are not particularly limited. Further, the support member may not rotate. In this case, of course, a rotating motor is not necessary.

  In the above-described embodiment, the opening of the bag-like container (balloon) is fixed by being covered with the protrusion protruding from the top plate. However, the locking form of the bag-like container is not particularly limited. For example, you may install a bag-shaped container in the state which closed the opening part. Moreover, in the said embodiment, the chuck | zipper part was comprised from a pair of bracket, a pair of air cylinder, a pair of clamping rod, and a guide member. However, the configuration of the chuck portion is not particularly limited as long as it can hold the bag-like container. For example, the pair of sandwiching rods may not be movable but may be fixed. Further, the bag-like container may not be sealed by the chuck portion. Further, the chuck portion is not always necessary.

  The viscous material to be stirred is not particularly limited as long as it contains a liquid resin raw material and a solid filler. When the viscosity of the viscous material is high, the effect of the stirring method and the stirring device of the present invention in which the stirring blade is not used is fully exhibited. Moreover, also when using a foaming resin raw material as a resin raw material, the effect of the stirring method and stirring apparatus of this invention that it can stir in a short time is fully exhibited. Examples of the foamed resin raw material include a foamed polyethylene resin raw material and a foamed polypropylene resin raw material in addition to the foamed urethane resin raw material. In addition, in the said embodiment, the foaming urethane resin raw material prepared previously was used. However, preliminary preparation of the resin raw material is not always necessary. That is, in the storing step, additives such as a crosslinking agent, a foaming agent, and a catalyst may be simultaneously added to the bag-like container in addition to the resin component and the filler.

The filler may be appropriately selected from magnetic particles, thermally conductive particles, conductive particles, ceramics, and the like according to characteristics required for the resin molded product to be manufactured. For example, in order to improve thermal conductivity, materials having high thermal conductivity, for example, carbon materials such as graphite and carbon fiber, aluminum, gold, silver, copper, and alloys based on these are preferable. It is. In addition, magnetic particles are also suitable from the viewpoint of being oriented and forming a heat transfer path. For example, ferromagnetic materials such as iron, nickel, cobalt, gadolinium, stainless steel, magnetite, maghemite, manganese zinc ferrite, barium ferrite, and strontium ferrite, antiferromagnetic materials such as MnO, Cr ₂ O ₃ , FeCl ₂ , and MnAs, And alloys using them. Moreover, when improving a flame retardance, the expanded graphite etc. which have a flame retardance effect are suitable. As the filler, composite particles obtained by combining a plurality of different types of particles may be used. The composite particles can be produced by a wet electrostatic adsorption method, a dry pulverization and mixing method, a stirring granulation method, a mechanochemical method, or the like.

  According to the viscous material stirring method and the stirring device of the present invention, even a relatively high-viscosity material including a liquid resin raw material and a solid filler can be uniformly stirred in a short time. Therefore, the viscous material stirring method and stirring device of the present invention are useful for the production of various resin molded products.

1: stirring device, 10: balloon (bag-like container), 100: recess, 2: deformation imparting member, 20: base, 22: disc, 23: arm, 24: guided member, 25: guide member, 26: Rotating motor housing portion 27: Balloon support portion (support member) 260: Top plate 261: Bottom plate 262: Support column 263: Collar 264: Connection piece 270: Disc, 271: Pressing rod 9: Base: 90: support, 91: top plate (locking member), 92: chuck part, 93: bracket, 94: air cylinder, 95: clamping rod, 96: guide member, 910: balloon mounting hole, 911: protrusion, 940: Cylinder body, 941: Shaft, M1: Motor for vertical movement, M2: Motor for rotation, m1: Rotating shaft, m2: Rotating shaft, S: Viscous material.

Claims (15)

A method of stirring a viscous material containing a liquid resin raw material and a solid filler,
An accommodating step of accommodating the viscous material in a deformable bag-like container;
An agitation step of agitating the contained viscous material by repeatedly deforming the bag-like container;
A method for stirring a viscous material, comprising:   The method for stirring a viscous material according to claim 1, wherein the bag-like container is elastically deformable.   The method for stirring a viscous material according to claim 1, wherein the bag-like container is made of an elastomer.   The method for stirring a viscous material according to claim 1, wherein the resin material is a foamed resin material.   The method for stirring a viscous material according to claim 4, wherein the foamed resin material is a foamed urethane resin material.   The method for stirring a viscous material according to claim 4 or 5, wherein a mixing ratio of the foamed resin raw material and the filler in the viscous material before stirring is 1: 0.2 to 2.0 in a volume ratio.   The said filler is a stirring method of the viscous material in any one of Claim 1 thru | or 6 containing a magnetic particle.   The viscous material stirring method according to claim 1, wherein the filler includes thermally conductive particles. A stirring device for stirring a viscous material containing a liquid resin raw material and a solid filler,
A deformable bag-like container containing the viscous material;
A locking member for locking the opening of the bag-like container;
A deformation imparting member that repeatedly deforms the bag-like container;
With
An apparatus for stirring viscous material, characterized in that the viscous material accommodated is stirred by repeatedly deforming the bag-like container with the deformation imparting member. The deformation imparting member is
A support member for supporting the bottom of the bag-like container;
A drive member connected to the support member and reciprocatingly moving the support member;
The viscous material stirring device according to claim 9, wherein the bag-like container is repeatedly expanded and contracted by the reciprocating motion of the support member to stir the viscous material.   The said support member is a stirring apparatus of the viscous material of Claim 10 which has a rod contact | abutted to the bottom part of the said bag-shaped container.   The viscous material stirring device according to claim 11, wherein the rod is rotatable in a plane perpendicular to a reciprocating direction of the support member.   The viscous material stirring device according to any one of claims 10 to 12, further comprising a chuck portion that holds a portion of the bag-like container close to the opening.   The stirrer for viscous material according to any one of claims 9 to 13, wherein the bag-like container is elastically deformable.   The viscous material stirring device according to any one of claims 9 to 14, wherein the bag-like container is made of an elastomer.

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