JP4155216B2 - Crushing apparatus and molding material crushing method using the same - Google Patents

Description

  The present invention relates to a pulverizing apparatus for pulverizing a molding material in which agglomerates, lumps and the like are generated, and a method for pulverizing a molding material using the same.

  Conventionally, as a molding material, a solid thermosetting resin composition, a thermoplastic resin composition, or the like is used, and thereby, formation of various molded products, sealing of electronic materials, and the like are widely performed.

  In preparing such a molding material, various additives are blended with powdered and granular resins as necessary. For example, when preparing a solid thermosetting resin composition, After mixing each component, it is dissolved and mixed, or after uniformly mixing with a mixer, blender, etc., heat kneaded with a kneader or roll, etc., cooled and solidified to obtain a powdered resin composition Further, if necessary, the powdery resin composition is compressed into a tablet.

  However, in the preparation of such a molding material, for example, while the molding material is stored after mixing, before heat-kneading, after heat-kneading / pulverization, and before tableting, agglomerates in the molding material due to its own weight or the like. In some cases, a product or a lump was formed and the transportability deteriorated. Moreover, in the case of the molding material which consists of a thermosetting resin composition, a coagulum and a lump may be formed also when a thermosetting reaction advances gradually.

Particularly in recent years, with the development of a wide variety of molding materials such as transparent sealing materials, agglomerates and lumps of molding materials in the process from preparation of molding materials to molding of products. Increasingly, the occurrence of things becomes a problem.
JP-A-57-209633 JP 2003-144893 A

  The present invention has been made in view of the above points, and an object of the present invention is to provide a crushing apparatus that crushes a molding material in which an agglomerated material or a lump is generated.

A crushing apparatus according to the present invention includes a crusher 1 that crushes a molding material by rotating around a rotary shaft 2 in a vertical direction in the molding material. A rotating blade 3 that rotates around the rotating shaft 2 of the crusher 1; and a rotating blade 4 that rotates around the rotating shaft 2 of the crusher 1 at the lower end of the crusher 1; 4 is inclined so that the front end in the driving direction is directed downward, and the inclination angle is 45 ° to 60 ° with respect to a plane orthogonal to the rotation axis 2 of the crusher 1. It is characterized by. As a result, when the molding material is crushed, the molding material is squeezed up by the rotating blades 4 and flows upward, and the molding material flows such that it flows outward and descends in the vicinity of the rotating blades 3. At this time, the molding material is crushed by applying the shearing force by the orbiting blade 3 while flowing to the orbiting blade 3 in sequence, and the shearing force is uniformly applied to the molding material in which agglomerates or lumps are generated. The entire molding material can be crushed.
Further, the orbiting blade 3 is formed so as to be inclined in the direction opposite to the driving direction toward the upper end side thereof, and the inclination angle is set to 5 to 45 ° with respect to a line parallel to the rotating shaft 2. It is characterized by. For this reason, the molding material that has been scraped up by the rotary blade 4 and sent to the orbiting blade 3 and is going to flow downward can be further scraped upward by the inclined surface, complicating the flow of the molding material, Thereby, the effect of crushing can be further enhanced.
Also, the orbital blade 3, the the rotation shaft 2, characterized in that the outer surface 35 of the opposite side is formed to be inclined so as to approach the rotary shaft 2 side as the upper end side. For this reason, it is possible to prevent the molding material from being pressed outward by allowing the molding material to flow inward along the inclination of the circumferential blade 3 at the upper part of the circumferential blade 3. It is possible to prevent the material from being pressed against the inner surface of the container 11. Further, when the molding material is scraped up by the rotating blade 3 as described above, the flow of the molding material flowing from the inner side to the rotating blade 3 side by the action of the rotating blade 4 and the molding material scraped upward by the rotating blade 3. Due to this flow, a complicated stress is applied to the molding material at the upper part of the orbiting blade 3, but by providing such an inclination, the molding material is pressurized between the orbiting blade 3 and the inner surface of the container 11. It is possible to prevent heat generation due to friction and scattering of the molding material.

  The rotary blade 4 has a lower end surface 42 formed as an inclined surface that is inclined downward toward the front end side in the driving direction, and the inclination angle of the inclined surface is the same as that of the rotary shaft 2 of the crusher 1. It is preferable that the angle is 5 ° to 10 ° with respect to the orthogonal plane. In this way, when the molding material is crushed, the molding material can be pushed downward along the inclined surface so that the molding material can escape upward in the driving direction of the rotating rotary blade 4. This can prevent the molding material from being pressed against the bottom surface of the container 11. For this reason, it can prevent that a molding material changes in quality by the heat_generation | fever by friction with the container 11 and a molding material, and can prevent that a molding material scatters from the container 11 collectively.

  Further, the circumferential blade 3 has a lower end surface 34 formed as an inclined surface inclined downward toward the drive direction side, and an inclination angle of the inclined surface is different from that of the rotary shaft 2 of the crusher 1. It is also preferable that the angle is 5 ° to 45 ° with respect to the orthogonal plane. In this way, at the time of crushing the molding material, the molding material can be pushed downward along the inclined surface so that the molding material can escape upward along the inclined surface in the driving direction of the circulating blade 3 that circulates. This can prevent the molding material from being pressed against the bottom surface of the container 11. For this reason, it can prevent that a molding material changes in quality by the heat_generation | fever by friction with the container 11 and a molding material, and can prevent that a molding material scatters from the container 11 collectively.

  Moreover, the crushing method of the molding material which concerns on this invention arrange | positions the crusher 1 of the above crushing apparatuses in the container 11 in which the molding material is stored, and rotates this crusher 1. It is characterized by being driven to rotate around the shaft 2.

  According to the present invention, a coagulum or a lump is formed by its own weight or the like while the molding material is stored, or a thermosetting reaction is gradually caused particularly in the case of a molding material made of a thermosetting resin composition. When agglomerates or agglomerates are formed by progressing, a shearing force is applied uniformly and efficiently over the entire molding material, and the molding material can be sufficiently crushed in a short time. As a result, it is possible to eliminate the deterioration of the transportability and moldability of the molding material due to the generation of agglomerates and agglomerates.

  In addition, when the crusher is rotating, the molding material can be prevented from being pressed to the outside of the crusher, and heat generation due to friction between the molding material and the inner surface of the container can be prevented. In particular, when the molding material is a thermosetting resin composition, the progress of the curing reaction can be prevented. At the same time, it is possible to prevent the molding material from being pressed against the inner surface of the container and scattered from the container.

  Hereinafter, the present invention will be described based on the best mode for carrying out the invention.

  1 to 3 show an example of a crushing apparatus according to the present invention.

  In the illustrated example, a support 8 is erected on the upper surface of the base 7, and a drive unit 9 for driving the crusher 1 is provided at the upper end of the support 8, and the crusher 1 is attached to the drive unit 9. Is provided.

  The base 7 may be provided with wheels on its lower surface, in which case the crushing device can be easily moved.

  The support 8 is formed so as to be freely extended and contracted in the vertical direction, and the disposition position of the crusher 1 is moved in the vertical direction as the support 8 expands and contracts.

  The drive unit 9 is provided with a drive source 10 at one end in the horizontal direction and a crusher 1 at the other end, and is connected to the upper end of the support 8 at a site between the drive source 10 and the crusher 1. Has been.

  A motor or the like is provided as the drive source 10, and an appropriate transmission mechanism that transmits the drive force from the drive source 10 to the crusher 1 is provided in the drive unit 9.

  The crusher 1 is provided so as to hang downward from the other end portion of the drive source 10 and is formed to be rotatable around the rotary shaft 2 in the vertical direction by the drive force transmitted from the drive source 10. Has been. Further, a lid body 12 that matches an upper opening of a container 11 described later is also provided above the crusher 1.

  The crusher 1 includes a shaft portion 5, a rotating blade 3, and a rotating blade 4.

  An upper end of the shaft portion 5 is connected to the other end portion of the drive portion 9, and a rotational driving force from the drive source 10 is transmitted to the shaft portion 5. At this time, the rotation shaft 2 of the crusher 1 is set to the central axis of the shaft portion 5.

  A plurality of support arms 6 are radially extended from the outer peripheral surface of the shaft portion 5, and a rotating blade 3 is provided at the tip of each support arm 6. In the illustrated example, two support arms 6 are provided, and each support arm 6 is provided with the orbiting blade 3.

  Further, the rotary blade 4 is provided on the inner side of the rotating blade 3 in the lower part of the crusher 1. In the illustrated example, a rotary blade 4 is provided that includes a plurality of blade bodies 41 extending radially from the lower end portion of the shaft portion 5. The illustrated rotary blade 4 is composed of two blade bodies 41, and the end portions of the blade bodies 41 are connected to the lower end portions of the circulating blades 3, respectively. Is supported.

  The circling blade 3 is preferably formed in a shape along the shape of the inner surface of the container 11. In the illustrated example, the upper part of the orbiting blade 3 is an upper blade portion 31 that is long in the vertical direction, and a lower blade portion 32 that extends from the lower end of the upper blade portion 31 so as to incline downward is provided. It has been. The rotary blade 4 is formed in a shape along the inner peripheral surface of the container 11 that opens upward, with the upper part formed in a cylindrical shape and the lower part formed in an inverted conical shape. Here, the support arm 6 is connected to the upper blade portion 31, and the blade body 41 is connected to the lower end portion of the lower blade portion 32.

  On the other hand, the container carriage has a container 11 that opens upward, and has a cylindrical shape at the top and an inverted conical shape at the bottom as described above, and a moving wheel portion 12 is provided at the bottom of the container 11. . The moving wheel unit 12 includes a plurality of support legs 13 extending downward from the lower part of the container 11 and wheels 14 provided at the lower ends of the support legs 13. An opening / closing valve 15 is provided at the lower end of the container 11, and the molding material can be stored in the container 11 with the opening / closing valve 15 closed, and the container can be opened by opening the opening / closing valve 15. The molding material in 11 can flow out of the container 11.

  Here, examples of the molding material to be crushed by such a crushing apparatus include thermosetting and thermoplastic resin compositions. For example, in the case of a thermosetting resin composition, Examples include those obtained by adding a filler, a curing agent, a release agent, a colorant, a coupling agent, or the like to a thermosetting resin of a body or granules.

  In crushing the molding material with the crushing device, first, the container carriage in which the molding material is stored in the container 11 is moved to the crushing device, and the upper opening of the container 11 is below the crusher 1. To be placed.

  In this state, by driving the drive source 10, the shaft portion 5 is rotationally driven, and thereby the crusher 1 is rotationally driven. At this time, in conjunction with the rotation of the shaft portion 5, the rotating blade 3 connected to the shaft portion 5 is driven to rotate and the rotating blade 4 connected to the shaft portion 5 is driven to rotate. Solid arrows in the figure indicate the direction of rotation of the crusher 1. At the same time, the support 8 is contracted to move the crusher 1 downward. At this time, the crusher 1 is controlled so that, for example, the orbiting blade 3 rotates at a speed of 0.5 to 1 m / sec and descends at a speed of 0.2 to 0.6 m / min.

  By doing in this way, the crusher 1 falls while rotating, and is accommodated in the container 11 from the upper opening. At the same time, the lid 12 closes the upper opening of the container 11.

  If the crusher 1 is arrange | positioned in the container 11, while the fall of the crusher 1 is stopped by stopping shrinkage | contraction of the support body 8, Preferably the rotational speed of the crusher 1 is raised. At this time, the crusher 1 is preferably rotated so that the circling blade 3 is driven to circulate at a speed of 1 to 6 m / sec.

  In this state, the molding material in the container 11 can be crushed by continuing to drive the crusher 1 for a predetermined time, preferably 30 seconds to 3 minutes.

  In the crushing apparatus as described above, in the present invention, the rotary blade 4 of the crusher 1 is inclined so as to be directed downward toward the front end in the driving direction, and the inclination angle α is the rotation axis 2 of the crusher 1. It forms so that it may become an angle of 45 degrees-60 degrees with respect to the plane orthogonal to. In the illustrated example, each blade body 41 constituting the rotary blade 4 is formed in a long plate shape that is long in the horizontal direction, and each blade body 41 is a blade body 41 when the crusher 1 is rotationally driven. The front end in the driving direction is inclined downward so that the inclination angle α is 45 ° to 60 °. In this case, the inclination angle α of the rotating blade 4 means the inclination angle α of the surface 43 facing the driving direction of the rotating blade 4, and if the surface 43 is not a flat surface but an arc shape or a curved surface shape, etc. The inclination angle α can be an angle of a virtual plane connecting the upper end and the lower end of the surface 43 facing the driving direction of the rotary blade 4 with respect to a plane orthogonal to the rotation axis 2 of the crusher 1.

  By providing the rotary blade 4 having such an inclination, when the molding material is crushed, the molding material is scraped up and flows upward by the rotating rotary blade 4, and further flows outward and flows around the rotating blade 3. A flow of the molding material that descends occurs (see broken line arrows in the figure). At this time, the molding material is crushed by applying a shearing force by the orbiting blade 3 while flowing to the orbiting blade 3 in sequence, and uniformly applying the shearing force to the molding material, It can be crushed.

  Here, if the inclination angle α of the rotary blade 4 deviates from the range of 45 ° to 60 °, the molding material cannot be sufficiently scraped and the molding material cannot be uniformly crushed, Furthermore, if this inclination angle α is less than 45 °, the molding material may be altered by heat generated by friction between the container 11 and the molding material. If this angle exceeds 60 °, the fluidity of the molding material is poor. There is a risk.

  Moreover, it is preferable to form the lower end surface 42 of the rotary blade 4 as an inclined surface which inclines so that the drive direction side may go below, and at this time, it is orthogonal to the rotating shaft 2 of the said crusher 1 of this inclined surface. It is preferable that the inclination angle β with respect to the plane to be adjusted is 5 ° to 10 °. Here, if the lower end surface 42 of the rotary blade 4 is not a flat surface but an arc shape, a curved surface, or the like, the inclination angle β is an imaginary line connecting the end of the lower end surface 42 on the driving direction side and the end on the opposite side. The angle can be an angle with respect to a plane perpendicular to the rotation axis 2 of the crusher 1.

  By providing the rotating blade 4 having such an inclined surface, when the molding material is crushed, the molding material can escape upward along the inclined surface behind the rotating rotating blade 4 in the driving direction. The molding material can be prevented from being pressed downward, and thus the molding material can be prevented from being pressed against the bottom surface of the container 11. For this reason, it can prevent that a molding material changes in quality by the heat_generation | fever by friction with the container 11 and a molding material, and can prevent that a molding material scatters from the container 11 collectively. At this time, if the inclination angle β is less than 5 °, the molding material may be altered due to heat generated by friction between the container 11 and the molding material. May become insufficient.

  Moreover, it is preferable to form also the lower end surface 34 of the surrounding blade 3 as an inclined surface which inclines so that the drive direction side may go below, and at this time, it is orthogonal to the rotating shaft 2 of the said crusher 1 of this inclined surface. The inclination angle γ with respect to the flat surface is preferably 5 to 45 °. In the illustrated example, the lower end surface 34 of the lower blade portion 32 forms an inclined surface at the lower end of the orbiting blade 3, and this inclined surface is inclined downward toward the drive direction side and its inclination angle γ Is 5 ° to 45 ° with respect to a plane perpendicular to the rotation axis 2 of the crusher 1. Here, when the lower end surface 34 of the circling blade 3 is not a flat surface but an arc shape, a curved surface shape, or the like, the inclination angle γ is such that the end portion on the drive direction side of the lower end surface 34 and the end portion on the opposite side thereof. It can be set as the angle with respect to the plane orthogonal to the rotating shaft 2 of the crusher 1 of the connecting virtual plane.

  By providing the circumferential blade 3 having such an inclined surface, as in the case where the inclined surface is formed on the rotary blade 4, when the molding material is crushed, the molding material is located behind the circulating blade 3 in the driving direction. By being able to escape upward along the inclined surface, it is possible to prevent the molding material from being pressed downward, thereby preventing the molding material from being pressed against the bottom surface of the container 11. For this reason, it can prevent that a molding material changes in quality by the heat_generation | fever by friction with the container 11 and a molding material, and can prevent that a molding material scatters from the container 11 collectively. At this time, if the inclination angle γ is less than 5 °, the molding material may be deteriorated due to heat generated by friction between the container 11 and the molding material. May become insufficient.

Further, orbiting vane 3, formed to be inclined to face the side opposite to the driving direction as upper side. In this case you formed so that the inclination angle ε and the rotary shaft 2 with respect to a line parallel is 5 ° to 45 °. The inclination of the rotating blade 3 may not be formed on the entire rotating blade 3, and for example, such an inclination may be formed only on the upper portion of the rotating blade 3. In the illustrated example, only the upper blade portion 31 of the orbiting blade 3 is provided with such an inclination. The inclination angle ε of the orbiting blade 3 at this time means the inclination angle ε of the surface 33 facing the driving direction of the orbiting blade 3, and this surface 33 is not a flat surface but an arc shape or a curved surface shape. Is the surface 33 facing the driving direction of the rotating blade 3 (the surface facing the driving direction of the inclined portion if there are a portion inclined to the rotating blade 3 and a portion not inclined as shown in FIG. 1) 33) can be set to an angle of a virtual plane connecting the upper end and the lower end with respect to a line parallel to the rotation axis 2.

  When such an inclination is formed in the orbiting blade 3, the molding material which is swept up by the rotating blade 4 and sent to the orbiting blade 3 and is going to flow downward can be further scooped up by the inclined surface. In addition, the flow of the molding material is complicated, and thereby the effect of crushing can be further enhanced. At this time, if the inclination angle ε is less than 5 °, the molding material may not be sufficiently scraped, or the molding material may be altered by heat generated by friction between the container 11 and the molding material. In addition, if it exceeds 45 °, the effect as a crushing blade may be lost.

Further, orbiting blades 3, the outer surface 35 opposite to the rotation shaft 2, you formed to be inclined so as to approach the rotary shaft 2 side as the upper end side. The inclination of the rotating blade 3 may not be formed on the entire rotating blade 3, and for example, such an inclination may be formed only on the upper portion of the rotating blade 3. In the illustrated example, only the upper blade portion 31 of the orbiting blade 3 is provided with such an inclination. In this way, the molding material can flow inward along the inclination of the orbiting blade 3 at the upper part of the orbiting blade 3, and the molding material can be prevented from being pressed outward. Thus, the molding material can be prevented from being pressed against the inner surface of the container 11. For this reason, it can prevent that a molding material changes in quality by the heat_generation | fever by friction with the container 11 and a molding material, and can prevent that a molding material scatters from the container 11 collectively. In particular, when the molding material is scraped up by the rotating blade 3 as described above, the molding material that flows from the inside toward the rotating blade 3 by the action of the rotating blade 4 and the molding that is scraped upward by the rotating blade 3 are used. Due to the flow of the material, a complicated stress is applied to the molding material on the upper part of the orbiting blade 3. By providing such an inclination, the molding material is pressurized between the orbiting blade 3 and the inner surface of the container 11. Can be prevented, and heat generation due to friction and scattering of the molding material can be prevented.

Furthermore, orbiting blades 3, the outer surface 35 opposite to the rotation shaft 2, the driving direction of the orbiting blades 3 formed by inclined toward the higher side opposite rotation shaft 2 side, the outer surface 35 on It is preferable that the portion on the opposite side to the driving direction is formed so that the trajectory of the rotating blade 3 during rotation is smaller. By providing the circumferential blade 3 having such an inclination, the molding material can flow inward along the inclination of the circumferential blade 3 at the rear of the circumferential blade 3 in the driving direction so that the molding material is outside. It is possible to prevent the molding material from being pressed against the inner surface of the container 11. For this reason, it can prevent that a molding material changes in quality by the heat_generation | fever by friction with the container 11 and a molding material, and can prevent that a molding material scatters from the container 11 collectively. In particular, when the molding material is scraped up by the orbiting blade 3 as described above, the molding material that flows from the inside to the orbiting blade 3 side by the action of the rotating blade 4 and the molding that is scraped upward by the orbiting blade 3. Due to the flow of the material, a complicated stress is applied to the molding material on the upper part of the orbiting blade 3. By providing such an inclination, the molding material is pressurized between the orbiting blade 3 and the inner surface of the container 11. Can be prevented, and heat generation due to friction and scattering of the molding material can be prevented.

  When the molding material is crushed by the crushing apparatus having the above-described configuration, when agglomerates or agglomerates are formed due to its own weight or the like while the molding material is stored, it is particularly thermosetting. Even when a molding material made of a resin composition gradually undergoes a thermosetting reaction to form an agglomerate or agglomerate, a shearing force is applied uniformly and efficiently to the entire molding material. The molding material can be sufficiently crushed in a short time. Therefore, when the molding material is kneaded, tableted, or a product is molded with this molding material, the transportability during the transportation of the molded product can be improved. Thus, the molding in the case of molding a product can be improved.

  Further, when the crusher 1 is rotating, it is possible to prevent the molding material from being pressed to the outside of the crusher 1 and to prevent heat generation due to friction between the molding material and the inner surface of the container 11. In addition, it is possible to prevent the molding material from being deteriorated. In particular, when the molding material is a thermosetting resin composition, the progress of the curing reaction can be prevented. At the same time, the molding material pressed against the inner surface of the container 11 can be prevented from overflowing and scattering from the container 11. Here, in the above embodiment, since the container 11 is closed by the lid 12, scattering of the molding material during pulverization is prevented, but the container is lowered by rotating the pulverizer 1. The container 11 is not yet closed by the lid body 12 in the process of disposing it in 11, and the scattering of the molding material can be prevented even in such a state.

It shows an example of the structure of the crusher 1 in the crushing apparatus which concerns on this invention, (a) is a top view, (b) is a front view, (c) is a side view, (d) is a part of It is sectional drawing. It is a front view which shows an example of the whole structure of the crushing apparatus which concerns on this invention. It is a front view which shows the structure of a crushing apparatus same as the above and a container trolley | bogie.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Crusher 2 Rotating shaft 3 Circulating blade 34 Lower end surface
35 Outer surface 4 Rotating blade 42 Lower end surface 11 Container

Claims (4)

A crusher that crushes the molding material by rotating around the rotation axis in the vertical direction in the molding material, and the crusher is driven around the rotation axis of the crusher. A blade, and a rotary blade that is driven to rotate around the rotation axis of the crusher at the lower end of the crusher, and the rotary blade is inclined so as to be directed downward toward the front end in the driving direction, and the inclination angle is It is formed so as to be 45 ° to 60 ° with respect to a plane orthogonal to the rotation axis of the crusher, and the rotating blade is inclined so as to be directed in the direction opposite to the driving direction toward the upper end side, and the inclination thereof The angle is 5 to 45 ° with respect to a line parallel to the rotation axis of the crusher, and the outer surface opposite to the rotation axis of the rotating blade is inclined so that the upper end is closer to the rotation axis. A crushing device characterized by being formed.   The lower end surface of the rotary blade is formed as an inclined surface that is inclined downward toward the drive direction side, and the inclination angle of the inclined surface is 5 ° with respect to a plane orthogonal to the rotation axis of the crusher. The crushing apparatus according to claim 1, wherein the crushing apparatus is configured to be −10 °.   The lower end surface of the rotating blade is formed as an inclined surface that is inclined downward toward the drive direction side, and the inclination angle of the inclined surface is 5 to 5 with respect to a plane orthogonal to the rotation axis of the crusher. The crushing apparatus according to claim 1, wherein the crushing apparatus is set to 45 °. The crusher of the crushing apparatus according to any one of claims 1 to 3 is disposed in a container in which a molding material is stored, and the crusher is rotationally driven around a rotation axis. A method for crushing molding materials.

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