JP5930881B2 - Gear structure and sheet manufacturing apparatus - Google Patents

Description

  The present invention relates to a gear structure and a sheet manufacturing apparatus, and more particularly to a gear structure used for conveying a composition containing particles and a resin component, and a sheet manufacturing apparatus including the gear structure.

  Conventionally, a gear pump including a pair of gears is known for transporting a fluid containing a molten resin.

  For example, there has been proposed a gear pump including a pair of gears (gear rotor) having a rotor shaft and a gear portion of a tooth trace along a direction in which the rotor shaft extends, and a housing that houses the gear portion and rotatably supports the rotor shaft. (For example, refer to Patent Document 1 below.)

  In the gear pump of Patent Document 1, the gear portion is rotated by the rotational drive of the rotor shaft, and thereby the molten resin in the upstream space on the upstream side of the housing is moved by the movement of the space defined by the housing and the tooth gap. , And conveyed to the downstream space on the downstream side of the housing.

JP 2011-153539 A

  In recent years, there has been a demand for conveying a composition in which particles having various physical properties are mixed with a resin component in a wide sheet form, and in order to satisfy the demand, a thread-like oblique tooth inclined with respect to the rotation axis direction is required. It is tentative to install a gear on the gear.

  However, if the upstream space and the downstream space of the housing communicate with each other via the tooth spaces between the inclined teeth, there is a problem that the conveyance efficiency is lowered.

  In particular, in order to convey the composition in the form of a wide sheet, it is necessary to make the length of the gear (the length in the rotational axis direction) relatively long. In the tooth gap, the above-described communication is more likely to occur. As a result, the conveyance efficiency is significantly reduced.

  Furthermore, since the composition contains particles, there is a demand for imparting a high shearing force to the composition. On the other hand, when the above-described communication occurs, such a demand cannot be satisfied.

  An object of the present invention is to provide a gear structure capable of conveying a composition containing particles and a resin composition in a wide sheet shape with high efficiency while applying a high shearing force, and a sheet manufacturing apparatus including the gear structure. There is to do.

  In order to achieve the above object, a gear structure of the present invention comprises a pair of gears and a casing that accommodates the pair of gears, and a composition containing particles and a resin component is added to the gear structure. The gear structure is configured to convey while being deformed in a rotation axis direction, and each of the pair of gears includes an oblique tooth that meshes with each other, and the oblique tooth is arranged adjacent to each other in the rotation axis direction. The first oblique teeth and the second oblique teeth are different from each other, and the first oblique teeth and the second oblique tooth traces move from the downstream side in the rotational direction of the gear toward the upstream side in the rotational direction. The casing is provided with an accommodation space that is inclined outward in the rotational axis direction and accommodates the pair of gears so that a sealed space is formed between the inclined teeth and the inner surface of the casing. , In the conveying direction with respect to the sealed space The pair of gears is configured so that the upstream space on the side and the downstream space on the downstream side in the transport direction with respect to the sealed space do not communicate with each other via the tooth spaces between the tooth traces. .

  According to this gear structure, a composition containing particles and a resin component can be conveyed by a sheet while being deformed in the rotational axis direction of the gear.

  Also, the engagement of a pair of gears can impart a high shear force to the composition, thereby dispersing the particles in the resin.

  Further, since the tooth traces of the first and second inclined teeth are inclined outward in the rotational axis direction from the downstream side in the rotational direction of the gear toward the upstream side in the rotational direction, the composition is in the rotational axis direction. It is transported while being securely spread so as to spread on both outer sides. Therefore, the composition can be reliably formed as a sheet.

  The pair of gears is configured so that the upstream space on the upstream side in the transport direction with respect to the sealed space and the downstream space on the downstream side in the transport direction with respect to the sealed space do not communicate with each other via the tooth spaces between the tooth traces. Therefore, the composition restricts the free movement of the composition through the tooth gap between the upstream space and the downstream space, and the tooth groove moves from the upstream side to the downstream side in the rotation direction based on the rotation of the gear. The composition can be conveyed.

  Therefore, a wide sheet can be conveyed with high efficiency while applying a high shearing force to the composition containing particles and a resin component.

  In the gear structure of the present invention, the tooth groove of the first oblique tooth and the tooth groove of the second oblique tooth are communicated with each other, and the tooth groove of the first oblique tooth and the first tooth tooth In the tooth groove of two oblique teeth, it is preferable that at least one overlapping tooth groove overlapping the inner side surface of the casing is formed when projected in the radial direction from the rotation axis over the entire rotation axis. is there.

  In this gear structure, the first oblique tooth groove and the second oblique tooth groove overlap with the inner surface of the casing when projected radially from the rotation axis over the entire rotation axis. Since at least one tooth gap is formed, the overlapping tooth gap can reliably prevent communication between the upstream space and the downstream space via the tooth gap.

  In the gear structure of the present invention, the tooth structure is further divided by extending in a direction intersecting with the tooth trace, and a partition portion for preventing the composition from moving in the rotation axis direction along the tooth groove is further provided. It is suitable to have.

  According to this gear structure, since the partition portion prevents the composition from moving in the rotation axis direction along the tooth gap, the communication between the tooth spaces between the upstream space and the downstream space is ensured. Can be prevented.

  Therefore, the sheet conveyance efficiency can be improved.

  In the gear structure of the present invention, the partition portion is provided on any one of the pair of gears, and is equal to or higher than the gear teeth of the gear, and is continuous along the circumferential direction of the gear. The other of the pair of gears is provided corresponding to the main partition, and is equal to or lower than the tooth gap of the gear and is continuous along the circumferential direction of the gear. The first auxiliary partition portion formed in the above-described manner, and the casing includes a second auxiliary partition portion that is unevenly formed so as to correspond to the main partition portion and / or the first auxiliary partition portion. Is preferred.

  In this gear structure, the main partition portion, the first auxiliary partition portion, and the second auxiliary partition portion can more reliably prevent communication between the tooth spaces between the tooth spaces in the upstream space and the downstream space.

  Therefore, the sheet conveyance efficiency can be further improved.

  In the gear structure of the present invention, it is preferable that the length of the pair of gears in the rotation axis direction is 200 mm or more.

  According to this gear structure, since the length of the pair of gears in the rotation axis direction is 200 mm or more, a wide sheet can be reliably conveyed.

  Moreover, it is preferable that the gear structure of the present invention is configured to convey the composition in which the volume ratio of the particles exceeds 30% by volume.

  In this gear structure, a composition in which particles are dispersed is conveyed as a sheet by a high shearing force based on meshing of a pair of gears even if the composition has a volume ratio exceeding 30 volume%. Can do.

  The sheet manufacturing apparatus of the present invention is a sheet manufacturing apparatus configured to manufacture a sheet from a composition containing particles and a resin component, and includes the above-described gear structure and a conveyance direction of the gear structure. A sheet adjusting unit comprising a moving support configured to be provided on the downstream side and configured to support and convey the composition, and a doctor arranged to face the moving support so that a gap is provided. The sheet adjusting unit is configured to pass the composition through the gap.

  In this sheet manufacturing apparatus, the composition is reliably conveyed to the sheet while being deformed in the rotational axis direction using the gear structure, and then the sheet deformed in the axial direction is supported by the movable support and conveyed. While passing through the gap with the doctor.

  Therefore, the sheet can be manufactured uniformly.

  In addition, it is preferable that the sheet manufacturing apparatus of the present invention further includes a kneading extruder provided on the upstream side of the gear structure in the transport direction and configured to knead the particles and the resin component.

  According to this sheet manufacturing apparatus, the composition in which the particles and the resin component are sufficiently mixed in advance can be conveyed as a sheet by the gear structure by the kneading extruder.

  Therefore, the dispersibility with respect to the resin component of the particle | grains in the sheet | seat obtained can be improved.

  Further, the sheet manufacturing apparatus of the present invention is provided on the downstream side in the extrusion direction of the kneading extruder and on the upstream side in the transport direction of the gear structure, and the composition has a width along the extrusion direction of the kneading extruder. It is preferable that the apparatus further includes a supply unit configured to supply the gear structure from a direction intersecting the transport direction.

  According to this sheet manufacturing apparatus, the composition that is extruded from the kneading extruder and reaches the supply unit has a width along the extrusion direction of the kneading extruder while the conveyance direction is changed to the crossing direction in the supply unit. Then, the gear structure is supplied from the direction intersecting the conveyance direction. Therefore, the gear structure can reliably form the composition having the above-described width on the sheet.

  Moreover, it is preferable that the sheet manufacturing apparatus of the present invention further includes a winding unit that is provided on the downstream side in the conveyance direction of the sheet adjusting unit and configured to wind the sheet in a roll shape.

  According to this sheet manufacturing apparatus, a roll-shaped sheet can be obtained by the winding unit.

  According to the gear structure of the present invention, a wide sheet can be conveyed with high efficiency while applying a high shearing force to the composition containing particles and a resin component.

  Moreover, according to the sheet manufacturing apparatus of the present invention, a sheet can be manufactured uniformly.

FIG. 1 is a partially cutaway plan view of a sheet manufacturing apparatus provided with a first embodiment of a gear structure of the present invention. FIG. 2 is a sectional view taken along the line AA in FIG. FIG. 3 shows an exploded perspective view of a pair of gears. FIG. 4 is a side sectional view for explaining the meshing of a pair of gears. FIG. 4A is a downstream side end portion of a convex surface of the first gear and a downstream side of the concave surface of the second gear. (B) shows a state in which the middle part of the convex surface of the inclined tooth of the first gear and a middle part of the concave surface of the inclined tooth of the second gear, (c) shows a state in which the end part meshes with the end part. The upstream end of the convex surface of the inclined tooth and the upstream end of the concave surface of the inclined tooth of the second gear are shown in mesh. FIG. 5 is a side cross-sectional view of the supply unit, the gear structure, and the seat adjustment unit, and shows a cross-sectional view along the line BB in FIG. FIG. 6 is a development view when the first gear is viewed from the upper surface of the second casing. FIG. 7 is a comparative example, and shows a development view when the first gear is viewed from the upper side surface of the second casing. FIG. 8: shows the expanded view when the 1st gear of 2nd Embodiment of the gear structure of this invention is seen from the upper surface of a 2nd casing. FIG. 9 shows an exploded perspective view of a pair of gears of the third embodiment of the gear structure of the present invention. FIG. 10 is a partially exploded perspective view of the pair of gears shown in FIG. 9 and the second casing that houses the gears. FIG. 11 is a front sectional view in which only the second casing of the gear structure shown in FIG. 10 is cut away. 12 is a side sectional view of the gear structure shown in FIG. 10, where (a) is a side sectional view taken along the line CC in FIG. 11, and (b) is taken along the line DD in FIG. A side sectional view, (c) shows a side sectional view along the line EE in FIG. FIG. 13 shows a front sectional view of a modification of the gear structure shown in FIG. FIG. 14 is a front sectional view of a modification of the gear structure shown in FIG. FIG. 15: shows the front sectional view which notched only the 2nd casing of 4th Embodiment of the gear structure of this invention. FIG. 16: shows the front sectional view which notched only the 2nd casing of 5th Embodiment of the gear structure of this invention. FIG. 17: shows the front sectional view which notched only the 2nd casing of 6th Embodiment of the gear structure of this invention. FIG. 18: shows the front sectional view which notched only the 2nd casing of the modification of 6th Embodiment of the gear structure of this invention.

<First Embodiment>
FIG. 1 is a partially cutaway plan view of a sheet manufacturing apparatus provided with a first embodiment of a gear structure of the present invention. FIG. 2 is a sectional view taken along the line AA in FIG. FIG. 3 shows an exploded perspective view of a pair of gears. FIG. 4 is a side sectional view for explaining the meshing of the pair of gears. FIG. 5 is a side cross-sectional view of the supply unit, the gear structure, and the seat adjustment unit, and shows a cross-sectional view along the line BB in FIG. FIG. 6 is a development view when the first gear is viewed from the upper surface of the second casing.

  In FIG. 1, the right side of the page is “right side”, the left side of the page is “left side”, the lower side of the page is “front side”, the upper side of the page is “rear side”, and is indicated by a directional arrow. The description will be made assuming that the back side of the page is the “lower side”. Further, in FIG. 1, the right side is one side in the rotation axis direction of a pair of gears (described later), the left side is the other side in the rotation axis direction, the front side is one side in the intersecting direction (described later), and the rear The side is the other side in the cross direction. Further, the directions of the drawings after FIG. 2 are the same as those described in FIG.

  In FIG. 1, the sheet manufacturing apparatus 1 is configured to manufacture a sheet 7 from a composition containing particles and a resin component, which will be described later, and is formed, for example, in a substantially L shape in plan view. The sheet manufacturing apparatus 1 includes a kneading extruder 2, a supply unit 3, a gear structure 4, a sheet adjustment unit 5, and a winding unit 6. The kneading extruder 2, the supply unit 3, the gear structure 4, the sheet adjustment unit 5, and the winding unit 6 are aligned and arranged in a substantially L shape in plan view in the sheet manufacturing apparatus 1. That is, the sheet manufacturing apparatus 1 is configured to convey a composition or a sheet 7 (see FIG. 2) described later in a substantially L shape in plan view.

  The kneading extruder 2 is provided on the left side of the sheet manufacturing apparatus 1. The kneading extruder 2 is, for example, a biaxial kneader or the like, and specifically includes a cylinder 11 and a kneading screw 12 accommodated in the cylinder 11.

  The cylinder 11 has a substantially cylindrical shape whose axis extends in the left-right direction. Further, the left side of the cylinder 11 is closed.

  As shown in FIG. 2, a kneader inlet 14 that opens upward is formed on the upper wall of the left end portion of the cylinder 11. A hopper 16 is connected to the kneader inlet 14.

  A kneader outlet 15 that opens to the right is formed at the right end of the cylinder 11. A connecting pipe 17 is connected to the kneader outlet 15.

  The cylinder 11 is provided with a block heater (not shown) divided into a plurality of parts along the left-right direction.

  The connecting pipe 17 is formed in a substantially cylindrical shape having an axis common to the axis of the cylinder 11.

  The kneading screw 12 has a rotation axis parallel to the axis of the cylinder 11. The kneading screw 12 is provided along the left-right direction in the cylinder 11.

  The kneading extruder 2 is provided with a motor (not shown) connected to the kneading screw 12 on the left side of the cylinder 11.

  Thereby, the kneading extruder 2 is configured to knead and extrude the particles and the resin component.

  As shown in FIG. 1, the supply part 3 is provided in the right side of the kneading extruder 2, and is formed so that it may extend in the left-right direction. As shown in FIG. 5, the supply unit 3 includes a first casing 21 and a supply screw 22.

  As shown in FIG. 1, the first casing 21 has a rectangular shape in plan view extending in the left-right direction, and the front side is opened in the left-right direction. A supply portion inlet 18 is formed at the left end portion of the first casing 21, and a first storage portion 27 is formed at the front end portion of the first casing 21. Moreover, as shown in FIG. 5, the 1st casing 21 is provided with the 1st accommodating part 19 which accommodates the supply screw 22 demonstrated below. The first accommodating part 19 includes a rear part 29 and a front part 30 communicating with the front side of the rear part 29. Each of the rear portion 29 and the front portion 30 has a substantially circular shape in a side sectional view, and is formed in the first casing 21 in the left-right direction.

  In FIG. 1 and FIG. 5, the supply unit inlet 18 communicates with the first storage unit 19 (rear part 29 and front part 30).

  The 1st storage part 27 is formed in the side cross sectional view substantially taper shape which becomes large toward the front. Moreover, the 1st storage part 27 is taken as the upstream space of the conveyance direction upstream with respect to the sealed space 74 mentioned later.

  The supply screw 22 is housed in the first housing portion 19 and includes a first screw 23 and a second screw 24 that extend in the left-right direction and mesh with each other.

  The first screw 23 is accommodated in the rear portion 29 and includes the first screw 23 and the blade 20 that is inclined with respect to the rotation direction R1. The pitch interval in the rotation axis direction of the blades 20 of the first screw 23 is, for example, 5 mm or more, preferably 10 mm or more, and for example, 50 mm or less, preferably 30 mm or less.

  The second screw 24 is accommodated in the front portion 30, has the same configuration and the same dimensions as the first screw 23, and rotates in the same direction as the first screw 23 while meshing with the first screw 23. It is configured.

  The length of the supply screw 22 (the first screw 23 and the second screw 24) in the rotation axis direction is set shorter than the width W0 of the first casing 21 by a minute clearance (not shown) in FIG. Has been.

  The supply unit 3 is provided with a motor (not shown) connected to the supply screw 22 on the right side of the first casing 21.

  The supply unit 3 supplies the composition to the gear structure 4 from the rear so as to have a width W0 along the extrusion direction (left-right direction) of the kneading extruder 2 (that is, the width W0 of the first casing 21). It is configured.

  As shown in FIG. 5, the gear structure 4 includes a second casing 31 and a pair of gears 32. As shown in FIG. 1, the gear structure 4 has a long length W2 in the rotation axis direction A1 of the pair of gears 32, and the gear pump that conveys the composition supplied from the supply unit 3 to the sheet adjustment unit 5. But there is.

  As shown in FIG. 5, the second casing 31 is continuously formed on the front side of the first casing 21, and the rear and front are opened in the left-right direction and formed in a substantially rectangular shape in plan view extending in the left-right direction. ing. A second housing portion 40 that houses a pair of gears 32 is provided at the rear end portion of the second casing 31, and a discharge port 46 is formed at the front end portion. In addition, a second storage portion 28 and a discharge passage 44 that are communicated with the second storage portion 40 and the discharge port 46 are formed.

  The second housing part 40 includes a lower part 61 and an upper part 62 communicating with the upper side of the lower part 61.

  Further, the upper side surface (inner side surface) 71 of the lower portion 61 and the lower side surface (inner side surface) 72 of the upper portion 62 are formed in a circular arc surface shape (half-circumferential surface shape divided into two), and a pair of gears 32. A housing space 73 for housing the container is defined. The accommodation space 73 communicates with the first storage portion 27 and is formed to extend in the vertical direction when viewed in cross section. Note that the lower portion 61 and the upper portion 62 are formed in the left and right direction in the second casing 31. A sealed space 74 described later is provided at the upper end and the lower end of the accommodation space 73.

  The discharge port 46 is partitioned by two discharge walls 45 formed at an interval in the vertical direction, and is formed to be opened forward. The discharge wall 45 is provided at the front end portion of the second casing 31 and includes a lower side wall 47 and an upper side wall 48.

  The lower side wall 47 has a thick flat plate shape extending in the left-right direction and the up-down direction, and each of its front surface and upper surface is formed flat.

  The upper side wall 48 has a flat bottom surface. Further, the upper side wall 48 has a substantially L shape in a side sectional view, and is formed such that the lower front end projects forward with respect to the upper front surface. That is, in the upper side wall 48, the lower front end portion is a protruding portion 63 as a doctor having a substantially rectangular shape in a side sectional view. The protrusion length (that is, the length in the front-rear direction) of the protrusion 63 is, for example, 2 mm or more, and is, for example, 150 mm or less, preferably 50 mm or less. In addition, the thickness of the protrusion 63 (that is, the length in the vertical direction) is, for example, 2 mm or more, and is, for example, 100 mm or less, preferably 50 mm or less. The front surface of the protrusion 63 and the front surface of the lower side wall 47 are formed so as to be in the same position when projected in the vertical direction.

  The 2nd storage part 28 is connected to the front side of the 2nd accommodating part 40, and is formed in the side cross sectional view substantially U shape by which the back is opened. Moreover, the 2nd storage part 28 is made into the downstream space of the conveyance direction downstream with respect to the sealed space 74 mentioned later.

  The discharge passage 44 communicates with the front side of the second reservoir 28 and also communicates with the rear side of the discharge port 46. The discharge passage 44 is formed in a substantially straight line extending forward when viewed from a side sectional view.

  As shown in FIG. 3, the pair of gears 32 is, for example, a double helical gear, and specifically includes a first gear 33 and a second gear 34.

  The first shaft 25 that is the rotation shaft of the first gear 33 extends in the left-right direction in the second casing 31 (see FIG. 5) and is provided to be rotatable.

  The second shaft 26 that is the rotation shaft of the second gear 34 extends in parallel with the first shaft 25 and is rotatable in the second casing 31 (see FIG. 5). Further, the second shaft 26 is disposed so as to face the first shaft 25 upward.

  Each of the first gear 33 and the second gear 34 is accommodated in the lower portion 61 and the upper portion 62. In addition, the radial end portion in the lower half portion of the first gear 33 is fitted to the upper side surface 71 (described later) of the lower portion 61, and the radial end portion in the upper half portion of the second gear 34 is the upper portion 62. The lower side surface 72 is fitted.

  Of the projection surface when projected from the first axis 25 onto the upper side surface 71, a line segment 83 connecting the front side surface and the first axis 25, and a line segment 84 connecting the rear side surface of the projection surface and the first axis 25, The formed angle α (overlapping angle) is, for example, 30 degrees or more, preferably 45 degrees or more, and for example, 180 degrees or less.

  Each of the first gear 33 and the second gear 34 specifically includes inclined teeth 35 that mesh with each other.

  In the first gear 33, the tooth traces of the inclined teeth 35 are inclined outward in the rotational axis direction A1 from the downstream side in the rotational direction R2 of the first gear 33 toward the upstream side in the rotational direction R2. The oblique teeth 35 are integrally provided with a first lower oblique tooth 36 and a second lower oblique tooth 37 having different tooth traces. In the first gear 33, the first lower inclined tooth 36 is formed on the right side with respect to the axial center of the first gear 33, and the second lower inclined tooth 37 is relative to the axial center of the first lower inclined tooth 36. It is formed on the left side.

  Specifically, the tooth traces of the first lower inclined teeth 36 are inclined from the left side (center side) to the right side (right end side) from the downstream side in the rotation direction R2 toward the upstream side in the rotation direction R2. On the other hand, the tooth traces of the second lower inclined teeth 37 are formed symmetrically with respect to the tooth traces of the first lower inclined teeth 36 with respect to the central portion in the left-right direction of the first gear 33. Specifically, As it goes from the downstream side in the rotational direction R2 to the upstream side in the rotational direction R2, the slope is inclined from the right side (center side) to the left side (left end side).

  The second gear 34 is formed vertically symmetrically with respect to the first gear 33 and is configured to mesh with the first gear 33. Specifically, the second upper gear 34 meshes with the first lower inclined teeth 36. The inclined teeth 38 and the second upper inclined teeth 39 that mesh with the second lower inclined teeth 37 are integrally provided.

  As shown in FIG. 4, the pair of gears 32 are configured such that the meshing portions indicated by black circles are configured such that the first gear 33 and the second gear 34 come into contact with each other in a cross-sectional view. It is a side cross-section point contact type. In addition, the pair of gears 32 are formed in the shape of a helical winding of the first gear 33 and the second gear 34 along the tooth traces of the pair of gears 32. Also referred to as contact type.

  The inclined teeth 35 of the pair of gears 32 are provided at intervals in the rotational direction R2 and connect the concave surfaces 42 formed so as to be curved inward in the radial direction, and the concave surfaces 42. A curved surface 41 integrally provided with a convex surface 43 formed so as to curve radially outward from both circumferential ends is provided.

  Further, a tooth groove 75 including a concave surface 42 is formed between the tooth traces of the oblique teeth 35, that is, between the apexes of the convex surface 43.

  Further, as shown in FIG. 5, the second casing 31 includes a pair of gears 32 between the bevel teeth 35 of the first gear 33 and the upper side surface 71 of the lower portion 61, and the bevel of the second gear 34. An accommodation space 73 is provided so that a sealed space 74 is formed between the teeth 35 and the lower surface 72 of the upper portion 62.

  That is, the upper side surface 71 and the lower side surface 72 are formed in a cross-sectional arc shape having the same curvature as the diameter of the pair of gears 32, and the radial ends of the pair of gears 32 (the apex of the convex surface 32, (See FIG. 4). As a result, the sealed space 74 covers the tooth gap 75 between the tooth traces of the oblique teeth 35 with the upper side surface 71 and the lower side surface 72.

  Further, the sealed space 74 is partitioned by the tooth gap 75 that satisfies the overlapping angle α described above, and the upper side surface 71 and the lower side surface 72.

  The pair of gears 32 are arranged so that the first storage portion 27 and the second storage portion 28 do not communicate with each other through the tooth spaces 75 between the tooth traces of the inclined teeth 35. It is configured.

  As shown in FIGS. 3 and 6, the tooth groove 75 of the first lower inclined tooth 36 and the tooth groove 75 of the second lower inclined tooth 37 communicate with each other. Further, when the projection 75 is projected from the rotation axis A1 to the tooth groove 75 of the first lower oblique tooth 36 and the tooth groove 75 of the first lower oblique tooth 36 over the entire rotation axis direction A1, a sealed space is formed. A plurality (two) of overlapping tooth grooves 76 that overlap with the inner surface of 74, that is, the upper surface 71 (see FIG. 5) are formed.

  Among the overlapping tooth grooves 76, the frontmost (most downstream) overlapping tooth groove 76A has a left end portion of the first lower inclined tooth 36 and a right end portion of the second lower inclined tooth 37 (that is, the left-right direction of the first gear 33). When the central portion, that is, the connecting portion thereof is disposed opposite to the front end portion (downstream end portion in the rotational direction) of the upper side surface 71 (see FIG. 5), the right end portion of the corresponding first lower inclined tooth 36 and The left end portion of the second lower inclined tooth 37 (that is, both end portions in the left-right direction of the first gear 33) does not face the first storage portion 27 (see FIG. 5), and the middle of the upper side surface 71 in the front-rear direction (rotation direction). Are arranged opposite to each other.

  Of the overlapping tooth grooves 76, the rearmost (most upstream) overlapping tooth groove 76 </ b> B has a right end portion of the first lower inclined tooth 36 and a left end portion (that is, the first gear 33 of the first gear 33). When the left and right end portions are disposed opposite to the rear end portion (upstream end portion in the rotation direction) of the upper side surface 71 (see FIG. 5), the left end portion and the second lower oblique portion of the corresponding first lower inclined tooth 36. The right end portion of the tooth 37 (that is, the central portion in the left-right direction of the first gear 33, that is, the connecting portion) is opposed to the middle of the upper side surface 71 in the front-rear direction (rotation direction) without facing the second storage portion 28. The

  The plurality of overlapping tooth grooves 76 are shifted to the tooth grooves 75 directed upstream in the rotation direction by the rotation of the first gear 33.

  Further, the overlapping tooth groove 76 and the lower side surface 72 of the second gear 34 have the same configuration as the overlapping tooth groove 76 and the upper side surface 71 of the first gear 33, and specifically, are vertically symmetrical with respect to the meshing portion. It is supposed to be configured. That is, a plurality of overlapping tooth spaces 76 that overlap with the lower surface 72 are formed in the tooth space 75. The overlapping tooth groove 76 shifts to the tooth groove 75 toward the upstream side in the rotation direction by the rotation of the second gear 34.

  The gear structure 4 is provided with a motor (not shown) connected to the first shaft 25 and the second shaft 26 of the pair of gears 32 on the right side of the supply screw 22.

  Next, the meshing of the pair of gears 32 on the curved surface 41 will be described with reference to FIGS. 4 (a) to 4 (c).

  First, as shown in FIG. 4A, the downstream end portion of the convex surface 43 of the first gear 33 in the rotational direction R2 meshes with the downstream end portion of the concave surface 42 of the second gear 34 in the rotational direction R2. 4A, and when the first gear 33 and the second gear 34 rotate in the rotation direction R2, the rotation direction R2 of the convex surface 43 of the first gear 33 changes as shown in FIG. The midway portion and the midway portion of the concave surface 42 of the second gear 34 in the rotational direction R2 mesh with each other. Subsequently, as shown in the arrow of FIG. 4B and FIG. 4C, when the first gear 33 and the second gear 34 rotate in the rotation direction R2, the convex surface 43 of the first gear 33 upstream of the rotation direction R2. The side end portion and the upstream end portion in the rotation direction R2 of the concave surface 42 of the second gear 34 mesh with each other. In other words, the meshing portion of the convex surface 43 of the first gear 33 and the concave surface 42 of the second gear 34 sequentially and sequentially moves to the downstream end portion, the middle portion, and the upstream end portion in the rotational direction R2 on each surface. .

  Subsequently, although not shown, the meshing portions of the concave surface 42 of the first gear 33 and the convex surface 43 of the second gear 34 are also sequentially arranged on the downstream end, the middle portion, and the upstream end in the rotational direction R2 on each surface. Move continuously.

  Therefore, the meshing portion of the curved surface 41 of the first gear 33 and the curved surface 41 of the second gear 34 moves continuously along the rotational direction R2. This movement of the meshing portion prevents the storage portion where the composition is accumulated from being formed in the tooth gap 75 between the tooth traces during the conveyance of the composition.

  As shown in FIGS. 1 and 5, the seat adjustment portion 5 is provided so as to include a protrusion 63 of the upper side wall 48 on the front side of the gear structure 4. The support roll 51 is provided. Further, as shown in FIG. 2, the sheet adjusting unit 5 includes a base material feed roll 56, a separator laminate roll 57, a rolling roll 58, and a separator feed roll 59.

  As shown in FIG. 5, the protrusion 63 has a role of a wall that partitions the discharge port 46 of the second casing 31 in the gear structure 4 and a thickness of the composition discharged from the discharge port 46 in the sheet adjustment unit 5. It has both the role of the doctor (or knife) to adjust.

  The support roll 51 is disposed so as to face the protrusion 63 so that a gap 50 is provided. The rotation axis of the support roll 51 is parallel to the first shaft 25 and the second shaft 26 of the pair of gears 32, and specifically extends in the left-right direction. Further, the rotation axis of the support roll 51 is arranged so as to overlap the discharge port 46 and the protrusion 63 when projected in the front-rear direction. Moreover, the support roll 51 is comprised so that a composition may be supported and conveyed.

  Therefore, the support roll 51 is configured to pass the composition through the gap 50.

  As shown in FIG. 2, the base material feed roll 56 is provided below the support roll 51 with a gap. The rotation axis of the base material feed roll 56 extends in the left-right direction, and the base material 8 is wound around the peripheral surface of the base material feed roll 56 in a roll shape.

  The separator laminating roll 57 and the rolling roll 58 are provided in front of the support roll 51 with a space therebetween. The rotation axes of the separator laminate roll 57 and the rolling roll 58 are arranged so as to extend in the left-right direction. The separator laminating roll 57 is disposed on the upper side of the rolling roll 58 so as to be pressed against the rolling roll 58.

  The rolling roll 58 is configured to be capable of rolling with respect to the sheet 7 and the substrate 8 upon receiving a pressure from the separator laminating roll 57, and the upper end portion of the rolling roll 58 is a support roll when projected in the front-rear direction. It arrange | positions so that it may become the same position as the upper end part of 51. FIG.

  The separator delivery roll 59 is provided on the diagonally upper front side of the separator laminate roll 57 with a gap therebetween. The rotation axis of the separator feed roll 59 extends in the left-right direction, and the separator 9 is wound around the peripheral surface of the separator feed roll 59 in a roll shape.

  The winding unit 6 is provided in front of the sheet adjustment unit 5 and includes a tension roll 52 and a winding roll 53.

  The tension roll 52 is provided in front of the rolling roll 58 at an interval. Specifically, the upper end of the tension roll 52 is located at the same position as the upper end of the rolling roll 58 when projected in the front-rear direction. It is arranged so that. The rotation axis of the tension roll 52 is formed to extend in the left-right direction.

  The take-up roll 53 is disposed to face the tension roll 52 at a diagonally lower front side with a space therebetween. The rotation axis of the take-up roll 53 extends in the left-right direction, and is configured so that the laminated sheet 10 can be taken up in a roll shape on the peripheral surface of the take-up roll 53.

  The dimensions of the sheet manufacturing apparatus 1 are appropriately set according to the types and blending ratios of the particles and resin components used and the width W1 and thickness T1 of the target sheet 7.

  As shown in FIG. 1, the width W0 of the first casing 21 is, for example, the relationship between the length W2 of the pair of gears 32 in the rotation axis direction and the following equation (1), preferably the relationship of the following equation (2): More preferably, it is set so as to satisfy the relationship of the following formula (3).

W2-100 (mm) ≦ W0 ≦ W2 + 150 (mm) (1)
W2-50 (mm) ≦ W0 ≦ W2 + 100 (mm) (2)
W2-20 (mm) ≦ W0 ≦ W2 + 50 (mm) (3)
The length W2 of the pair of gears 32 in the rotation axis direction can be selected as appropriate according to the width W1 of the sheet 7 to be manufactured. Specifically, the length W2 is the same as the width W0 of the first casing 21 described above. For example, the width W1 is 7% or more, preferably 80% or more, and for example 100% or less.

  As shown in FIG. 5, in the rotation trajectory of the pair of gears 32, the rotation direction length L <b> 2 (see FIG. 6) where the first gear 33 and the upper side 71 face each other, and the second gear 34 and the lower side 72. The length in the rotation direction (not shown in FIG. 6) opposite to each other is, for example, 2 mm or more, preferably 3 mm or more, preferably 5 mm or more, and for example, 324 mm or less, preferably 315 mm or less. is there. If the above-described length is equal to or more than the lower limit, a plurality of overlapping tooth grooves 76 can be reliably formed, and the conveyance efficiency of the sheet 7 can be improved. On the other hand, if the above-described length is not more than the above upper limit, the conveyance efficiency of the composition can be improved.

  As shown in FIG. 3, the length W2 of the pair of gears 32 in the rotation axis direction is, for example, 200 mm or more, preferably 300 mm or more, and, for example, 2000 mm or less.

The gear diameter of the pair of gears 32 (the diameter (outer diameter) of the gear 32, specifically, the diameter of the cutting edge circle) is set so that the pair of gears 32 is not distorted by the pressure during conveyance of the composition. It is 10 mm or more, preferably 20 mm or more, and is, for example, 200 mm or less, preferably 80 mm or less. Further, the diameter of the root circle of the pair of gears 32 ( a value obtained by subtracting the double value (L3 × 2) of the tooth depth L3 described below from the gear diameter) is, for example, 8 mm or more, preferably 10 mm or more. Also, for example, it is 198 mm or less, preferably 194 mm or less.

  As shown in FIG. 4, the tooth depth L3 of the pair of gears 32 is, for example, 1 mm or more, preferably 3 mm or more, and for example, 30 mm or less, preferably 20 mm or less.

  The pitch interval of the inclined teeth 35 in the rotation axis direction A1 is, for example, 5 mm or more, preferably 10 mm or more, and for example, 30 mm or less, preferably 25 mm or less. Further, the angle (inclination angle) of the tooth traces of the inclined teeth 35 with respect to the rotation axis of the pair of gears 32 exceeds, for example, 0 degrees, preferably 5 degrees or more, and more preferably 15 degrees or more. Also, for example, it is less than 75 degrees, preferably 70 degrees or less, more preferably 60 degrees or less. If the inclination angle is equal to or greater than the above lower limit, the composition can be spread on both outer sides of the rotation axis A1, and the wide sheet 7 can be reliably formed. On the other hand, if the inclination angle is equal to or less than the above upper limit, the overlapping tooth groove 76 can be reliably formed and the conveyance efficiency of the sheet 7 can be improved.

  As shown in FIG. 5, the distance in the front-rear direction of the gap 50 is appropriately set according to the size of the discharge port 46, and is, for example, 10 μm or more, preferably 30 μm or more, and, for example, 1000 μm or less, preferably Is also 800 μm or less.

  Hereinafter, a method for manufacturing the sheet 7 from a composition containing particles and a resin component using the sheet manufacturing apparatus 1 will be described.

  The particles include powder, granules, powders, and powders, and examples of the material forming the particles include inorganic materials and organic materials. Preferably, an inorganic material is used.

  Examples of the inorganic material include carbide, nitride, oxide, carbonate, sulfate, metal, clay mineral, and carbon-based material.

  Examples of the carbide include silicon carbide, boron carbide, aluminum carbide, titanium carbide, and tungsten carbide.

  Examples of the nitride include silicon nitride, boron nitride (BN), aluminum nitride (AlN), gallium nitride, chromium nitride, tungsten nitride, magnesium nitride, molybdenum nitride, and lithium nitride.

Examples of the oxide include silicon oxide (silica, including spherical fused silica powder, crushed fused silica powder, etc.), aluminum oxide (alumina, Al ₂ O ₃ ), magnesium oxide (magnesia), titanium oxide, cerium oxide, Examples thereof include iron oxide and beryllium oxide. Furthermore, as the oxide, for example, indium tin oxide or antimony tin oxide doped with metal ions can be used.

  Examples of the carbonate include calcium carbonate.

  Examples of the sulfate include calcium sulfate (gypsum).

  Examples of the metal include copper (Cu), silver, gold, nickel, chromium, lead, zinc, tin, iron, palladium, or an alloy thereof (such as solder).

  Examples of clay minerals include montmorillonite, magnesia montmorillonite, tetsu montmorillonite, tetsu magnesian montmorillonite, beidellite, aluminian beidelite, nontronite, aluminian nontronite, support stone, aluminian support stone, Examples include hectorite, soconite, and stevensite.

  Examples of the carbon-based material include carbon black, graphite, diamond, fullerene, carbon nanotube, carbon nanofiber, nanohorn, carbon microcoil, and nanocoil.

In addition, examples of the material include a material having specific physical properties, and a heat conductive material (for example, a heat conductive material selected from carbide, nitride, oxide and metal, specifically, BN, AlN, Al _2). O ₃ ), an electrically conductive material (for example, an electrically conductive material selected from metals and carbon-based materials, specifically Cu), an insulating material (for example, nitride, oxide, etc.) BN, silica, etc.), magnetic materials (for example, oxides, metals, specifically, ferrites (soft magnetic ferrite, hard magnetic), iron, etc.). The material having specific physical properties may overlap with the material exemplified above.

  The thermal conductivity of the heat conductive material is, for example, 10 W / m · K or more, preferably 30 W / m · K or more, and for example, 2000 W / m · K or less.

Further, the electrical conductivity of the electrically conductive material is, for example, 10 ⁶ S / m or more, preferably 10 ⁸ S / m or more, and usually 10 ¹⁰ S / m or less.

The volume resistance of the insulating material is 1 × 10 ¹⁰ Ω · cm or more, preferably 1 × 10 ¹² Ω · cm or more, and for example, 1 × 10 ²⁰ Ω · cm or less.

  The magnetic material has a magnetic permeability (μ ″ at a wavelength of 2.45 GHz), for example, 0.1 to 10.

  Moreover, the shape of particle | grains is not specifically limited, For example, plate shape, scale shape, particle shape (indefinite shape), spherical shape etc. are mentioned.

  The average value of the maximum length of particles (in the case of a spherical shape, the average particle diameter) is, for example, 0.1 μm or more, preferably 1 μm or more, and, for example, 1000 μm or less, preferably 100 μm or less. But there is.

  The aspect ratio of the particles is, for example, 2 or more, preferably 10 or more, and is, for example, 10,000 or less, preferably 5000 or less.

The specific gravity of the particles is, for example, 0.1 g / cm ³ or more, preferably 0.2 g / cm ³ or more, and for example, 20 g / cm ³ or less, preferably 10 g / cm ³ or less. .

  These particles can be used alone or in combination of two or more.

  The resin component can disperse the particles, that is, a dispersion medium (matrix) in which the particles are dispersed and contains an insulating component, and examples thereof include resin components such as a thermosetting resin component and a thermoplastic resin component. It is done.

  Examples of the thermosetting resin component include epoxy resins, thermosetting polyimides, urea resins, melamine resins, unsaturated polyester resins, diallyl phthalate resins, silicone resins, thermosetting urethane resins, and the like.

  Examples of the thermoplastic resin component include acrylic resin, polyolefin (for example, polyethylene, polypropylene, ethylene-propylene copolymer, etc.), polyvinyl acetate, ethylene-vinyl acetate copolymer, polyvinyl chloride, polystyrene, polyacrylonitrile, Polyamide, polycarbonate, polyacetal, polyethylene terephthalate, polyphenylene oxide, polyphenylene sulfide, polysulfone, polyethersulfone, polyetheretherketone, polyallylsulfone, thermoplastic polyimide, thermoplastic urethane resin, polyaminobismaleimide, polyamideimide, polyetherimide, Bismaleimide triazine resin, polymethylpentene, fluororesin, liquid crystal polymer, olefin-vinyl alcohol copolymer, polymer Ionomer, polyarylate, acrylonitrile - ethylene - styrene copolymers, acrylonitrile - butadiene - styrene copolymer, acrylonitrile - styrene copolymer.

  These resin components can be used alone or in combination of two or more.

  Among the resin components, the thermosetting resin component is preferably an epoxy resin, and the thermoplastic resin component is preferably an acrylic resin.

  The epoxy resin is in a liquid, semi-solid, or solid form at normal temperature.

  Specifically, as the epoxy resin, for example, bisphenol type epoxy resin (for example, bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol S type epoxy resin, hydrogenated bisphenol A type epoxy resin, dimer acid modified bisphenol type) Epoxy resin, etc.), novolac type epoxy resin, naphthalene type epoxy resin, fluorene type epoxy resin (eg, bisarylfluorene type epoxy resin), triphenylmethane type epoxy resin (eg, trishydroxyphenylmethane type epoxy resin), etc. Aromatic epoxy resins such as nitrogen-containing ring epoxy resins such as triepoxypropyl isocyanurate and hydantoin epoxy resins such as aliphatic epoxy resins, alicyclic epoxy resins, Glycidyl ether type epoxy resins, and glycidyl amine type epoxy resin.

  These epoxy resins can be used alone or in combination of two or more.

  The epoxy equivalent of the epoxy resin is, for example, 100 to 1000 g / eq. , Preferably 180 to 700 g / eq. It is. Moreover, when an epoxy resin is a normal temperature solid state, a softening point is 20-90 degreeC, for example.

  Moreover, an epoxy resin can be prepared as an epoxy resin composition by containing a hardening | curing agent and a hardening accelerator, for example.

  The curing agent is a latent curing agent (epoxy resin curing agent) that can cure the epoxy resin by heating. For example, a phenol compound, an amine compound, an acid anhydride compound, an amide compound, a hydrazide compound, an imidazoline compound, and the like. Is mentioned. In addition to the above, urea compounds, polysulfide compounds, and the like are also included.

  The phenol compound contains a phenol resin, for example, a novolac-type phenol resin obtained by condensing phenol and formaldehyde in the presence of an acidic catalyst, for example, phenol synthesized from phenol and dimethoxyparaxylene or bis (methoxymethyl) biphenyl. Examples include aralkyl resins such as biphenyl aralkyl resins, such as dicyclopentadiene type phenol resins, such as cresol novolac resins, such as resole resins.

  Examples of the amine compound include polyamines such as ethylenediamine, propylenediamine, diethylenetriamine, and triethylenetetramine, or amine adducts thereof such as metaphenylenediamine, diaminodiphenylmethane, and diaminodiphenylsulfone.

  Examples of the acid anhydride compound include phthalic anhydride, maleic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, 4-methyl-hexahydrophthalic anhydride, methyl nadic acid anhydride, and pyromellitic acid. Anhydride, dodecenyl succinic anhydride, dichlorosuccinic anhydride, benzophenone tetracarboxylic acid anhydride, chlorendic acid anhydride and the like can be mentioned.

  Examples of the amide compound include dicyandiamide and polyamide.

  Examples of the hydrazide compound include adipic acid dihydrazide.

  Examples of the imidazoline compound include methyl imidazoline, 2-ethyl-4-methyl imidazoline, ethyl imidazoline, isopropyl imidazoline, 2,4-dimethyl imidazoline, phenyl imidazoline, undecyl imidazoline, heptadecyl imidazoline, 2-phenyl-4-methyl. Examples include imidazoline.

  These curing agents can be used alone or in combination of two or more.

  The curing accelerator is a curing catalyst, for example, an imidazole compound such as 2-phenylimidazole, 2-methylimidazole, 2-ethyl-4-methylimidazole, 2-phenyl-4-methyl-5-hydroxymethylimidazole, For example, tertiary amine compounds such as triethylenediamine and tri-2,4,6-dimethylaminomethylphenol, such as triphenylphosphine, tetraphenylphosphonium tetraphenylborate, tetra-n-butylphosphonium-o, o-diethylphospho Phosphorus compounds such as rosioate, for example, quaternary ammonium salt compounds, for example, organometallic salt compounds, for example, derivatives thereof and the like. These curing accelerators can be used alone or in combination of two or more.

  The compounding ratio of the curing agent in the epoxy resin composition is, for example, 0.5 to 200 parts by mass, preferably 1 to 150 parts by mass with respect to 100 parts by mass of the epoxy resin. For example, 0.1 to 10 parts by mass, preferably 0.2 to 5 parts by mass. Moreover, when a hardening | curing agent contains a phenol resin, the hydroxyl group of a phenol resin is 0.5-2.0 mol with respect to 1 mol of epoxy groups of an epoxy resin in an epoxy resin composition, Preferably , 0.8 to 1.2 mol.

  The above-mentioned curing agent and / or curing accelerator can be prepared and used as a solvent solution and / or a solvent dispersion dissolved and / or dispersed with a solvent, if necessary.

  Examples of the solvent include organic solvents such as ketones such as acetone and methyl ethyl ketone (MEK), esters such as ethyl acetate, and amides such as N, N-dimethylformamide. Examples of the solvent also include aqueous solvents such as water, for example, alcohols such as methanol, ethanol, propanol, and isopropanol.

  The acrylic resin contains acrylic rubber, and is specifically obtained by polymerization of a monomer containing (meth) acrylic acid alkyl ester.

The (meth) acrylic acid alkyl ester is a methacrylic acid alkyl ester and / or an acrylic acid alkyl ester, for example, methyl (meth) acrylate, (meth)
Ethyl acrylate, butyl (meth) acrylate, hexyl (meth) acrylate, (meth)
2-ethylhexyl acrylate, nonyl (meth) acrylate, isononyl (meth) acrylate, decyl (meth) acrylate, isodecyl (meth) acrylate, undecyl (meth) acrylate, lauryl (meth) acrylate, (meth Linear or branched alkyl (meth) acrylates having an alkyl moiety of 30 or less carbon atoms, such as tridecyl acrylate, tetradecyl (meth) acrylate, octadecyl (meth) acrylate, and octadodecyl (meth) acrylate An ester is mentioned, Preferably, the alkyl part has a C1-C18 linear (meth) acrylic-acid alkylester.

  These alkyl (meth) acrylates can be used alone or in combination of two or more.

  The blending ratio of the (meth) acrylic acid alkyl ester is, for example, 50% by mass or more, preferably 75% by mass or more, for example, 99% by mass or less with respect to the monomer.

  The monomer may also include a copolymerizable monomer that can be polymerized with (meth) acrylic acid alkyl ester.

  The copolymerizable monomer contains a vinyl group, for example, a cyano group-containing vinyl monomer such as (meth) acrylonitrile, for example, a glycidyl group-containing vinyl monomer such as glycidyl (meth) acrylate (epoxy group-containing vinyl monomer), for example, Examples thereof include aromatic vinyl monomers such as styrene.

The blending ratio of the copolymerizable monomer is, for example, 50% by mass or less, preferably 25% by mass or less, for example, 1% by mass or more with respect to the monomer.

  These copolymerizable monomers can be used alone or in combination of two or more.

  When the copolymerizable monomer is a cyano group-containing vinyl monomer and / or an epoxy group-containing vinyl monomer, the resulting acrylic resin has a functional group such as an epoxy group and / or a cyano group bonded to the terminal or midway of the main chain. Are introduced into the functional group-modified acrylic resin (specifically, cyano-modified acrylic resin, epoxy-modified acrylic resin, cyano-epoxy-modified acrylic resin).

  The melt viscosity at 80 ° C. of the resin component (when the thermosetting resin component is contained, the resin component in which the thermosetting resin component is in an A stage state) is, for example, 10 Pa · s or more, preferably 50 Pa · s. In addition, for example, it is 10000 mPa · s or less, preferably 10000 mPa · s or less.

  The softening temperature (ring and ball method) of the resin component is, for example, 80 ° C. or less, preferably 70 ° C. or less, and for example, 20 ° C. or more, preferably 35 ° C. or more.

  Specifically, the mixing ratio of the particles and the resin component is such that the volume ratio of the particles in the sheet 7 exceeds, for example, 30% by volume, preferably 35% by volume or more, preferably 40% by volume or more. Is set to be 60% by volume or more, more preferably 70% by volume or more, for example, 98% by volume or less, preferably 95% by volume or less.

  The mixing ratio of the particles and the resin component based on mass is set so as to be the volume ratio of the particles in the sheet 7 described above.

  The resin component includes, for example, a polymer precursor (for example, a low molecular weight polymer including an oligomer) and / or a monomer in addition to the above-described components (polymerized products).

  These resin components can be used alone or in combination.

  Then, as shown in FIG. 2, a hopper 16 is charged with a composition containing particles and a resin component.

  In the sheet manufacturing apparatus 1, the kneading extruder 2, the supply unit 3, and the gear structure 4 are adjusted to a predetermined temperature and rotation speed. The temperatures of the kneading extruder 2, the supply unit 3, and the gear structure 4 are, for example, higher than the softening temperature when the resin component contains a thermoplastic resin component, and the resin component is thermosetting. When the resin component is contained, it is lower than its curing temperature, specifically, for example, 50 ° C. or higher, preferably 70 ° C. or higher, and for example, 200 ° C. or lower, preferably 150 ° C. It is also below.

  Further, the base material 8 is wound around the base material feed roll 56 in advance.

  Examples of the substrate 8 include polypropylene film, ethylene-propylene copolymer film, polyester film (PET, etc.), plastic films such as polyvinyl chloride, paper such as kraft paper, cotton cloth, soft cloth, etc. And non-woven fabrics such as polyester non-woven fabric and vinylon non-woven fabric, for example, metal foil. The thickness of the base material 8 is appropriately selected according to the purpose and use thereof, and is, for example, 10 to 500 μm. In addition, the surface of the base material 8 can also be mold-released.

  Further, the separator 9 is wound around the separator feed roll 59 in advance.

  Examples of the separator 9 are the same as those of the substrate 8, and the surface of the separator 9 can also be surface-treated. The thickness of the separator 9 is appropriately selected according to its purpose and application, and is, for example, 10 to 500 μm.

  Next, the composition is charged into the cylinder 11 from the hopper 16 through the kneader inlet 14 of the cylinder 11.

  In the kneading extruder 2, the composition in which the particles and the resin component contained in the composition are kneaded and extruded by the rotation of the kneading screw 12 while being heated by the block heater, and the particles are dispersed in the resin component. From the outlet 15 to the supply section inlet 18 in the supply section 3 through the connecting pipe 17 (kneading extrusion process).

  Then, as shown in FIG. 1, the composition has a width W0 (width W0 of the first casing 21) along the extrusion direction of the kneading extruder 2, that is, the left-right direction by the rotation of the supply screw 22 in the supply unit 3. So that the gear structure 4 is supplied to the gear structure 4 from the rear to the front (specifically, the supply direction). In other words, the composition extruded from the kneading extruder 2 to the right and reaching the supply unit 3 is turned 90 degrees in the conveyance direction in the supply unit 3. Specifically, the composition is supplied to the gear structure 4 via the first reservoir 27 so as to have a width W0 along the left-right direction while the conveyance direction is changed from the right to the front. That is, in the supply unit 3, extrusion in the extrusion direction (left-right direction) of the composition and supply of the composition to the gear structure 4 proceed simultaneously.

  Thereafter, the composition is conveyed forward in the gear structure 4 while being deformed in the rotation axis direction A1 of the pair of gears 32 (deformation conveying step).

  Specifically, the composition is conveyed while being spread from the center portion in the rotation axis direction A1 to both ends by the meshing of the pair of gears 32.

  Specifically, as shown in FIG. 5, the composition reaches from the upper end portion and the lower end portion of the front side portion of the first storage portion 27 to the rear side portion from the meshing portion of the pair of gears 32 in the accommodation space 73. While being sheared by the oblique teeth 35 of the pair of gears 32, the tooth is entrained in the tooth gap 75 and then reaches the sealed space 74. Then, in the sealed space 74, the composition moves along the tooth traces of the oblique teeth 35, that is, the communication between the first storage portion 27 and the second storage portion 28 by the tooth spaces 75 that become the overlapping tooth spaces 76. While being prevented, the pair of gears 32 are transported downstream of the pair of gears 32 in the rotational direction R2, that is, forward. As a result, the composition is pushed out to the front side of the pair of gears 32 and reaches the front side part from the meshing part of the pair of gears 32 in the accommodation space 73.

  Subsequently, the composition is prevented from flowing backward (returning back) to the first storage portion 27 via the meshing portion of the inclined teeth 35 (see FIG. 4), while being prevented in the left-right direction. It is pushed out.

  Specifically, as shown in FIG. 3, in the right side portion of the gear structure 4, the rotation axis direction A <b> 1 of the pair of gears 32 is engaged by the engagement of the first lower inclined teeth 36 and the first upper inclined teeth 38. It is spread from the center of the head toward the right edge. On the other hand, in the left side portion of the gear structure 4, the second lower inclined teeth 37 and the second upper inclined teeth 39 are engaged to push the pair of gears 32 from the central portion in the rotational axis direction A1 toward the left end portion. Can be spread.

  Thereby, the sheet | seat 7 which consists of a composition is obtained.

  Subsequently, as shown in FIGS. 5 and 6, the sheet 7 reaches the discharge port 46 through the second storage portion 28 and the discharge passage 44, and then is discharged (conveyed) from the discharge port 46 toward the support roll 51. )

  Specifically, the base material 8 fed from the base material feed roll 56 (see FIG. 2) is laminated on the peripheral surface of the support roll 51, and the sheet 7 is supported via the base material 8. While being supported by 51, it is conveyed in the rotation direction of the support roll 51.

  The sheet 7 discharged from the discharge port 46 is once discharged to the rear of the support roll 51 via the base material 8, and the thickness is immediately adjusted by the protrusion 63 and the peripheral surface of the support roll 51. Specifically, the excess composition is scraped off by the protrusion 63 on the surface of the substrate 8 supported by the support roll 51, and adjusted to the desired thickness T1 and the desired width W1 (gap passing step).

  The adjusted thickness T1 of the sheet 7 is substantially the same as the longitudinal distance L1 of the gap 50, specifically, for example, 50 μm or more, preferably 100 μm or more, more preferably 300 μm or more, Further, for example, it is 1000 μm or less, preferably 800 μm or less, more preferably 750 μm or less.

  Subsequently, as shown in FIG. 2, the base material 8 on which the sheets 7 are laminated is conveyed from the support roll 51 toward the separator laminating roll 57 and the rolling roll 58, and the separator laminating roll 57 and the rolling roll 58. In the meantime, the separator 9 is laminated on the upper surface of the sheet 7. Thereby, the sheet | seat 7 is obtained as the laminated sheet 10 by which the base material 8 and the separator 9 were each laminated | stacked on both surfaces (lower surface and upper surface).

  Thereafter, the laminated sheet 10 passes through the tension roll 52 and is subsequently wound up into a roll shape by the winding roll 53 (winding step).

  In this sheet manufacturing apparatus 1, when the resin component contains a thermosetting resin component, after being heated by the kneading extruder 2, the thermosetting property of the sheet 7 until being wound on the winding roll 53. The resin component is in the B stage state, and the thermosetting resin component in the sheet 7 wound around the take-up roll 53 is also in the B stage state.

  And according to this gear structure 4, the composition containing particle | grains and a resin component can be conveyed as a sheet | seat 7 deform | transforming into the rotation axis direction A1 of a gear.

  Further, the meshing of the pair of gears 32 can impart a high shearing force to the composition, thereby dispersing the particles in the resin.

  Further, the inclined teeth 35 of the first lower inclined teeth 36 and the second lower inclined teeth 37 are arranged on both outer sides in the rotation axis direction A1 from the downstream side in the rotation direction R2 of the first gear 33 toward the upstream side in the rotation direction R2. It is inclined to. Further, the inclined teeth 35 of the first upper inclined teeth 38 and the second upper inclined teeth 39 are arranged on both outer sides in the rotation axis direction A1 from the downstream side in the rotation direction R2 of the second gear 34 toward the upstream side in the rotation direction R2. It is inclined to.

  Therefore, the composition is conveyed while being surely spread so as to spread on both outer sides in the rotation axis direction A1. Therefore, the composition can be reliably formed as the sheet 7.

  The first storage unit 27 on the upstream side in the transport direction with respect to the sealed space 74 and the second storage unit 28 on the downstream side in the transport direction with respect to the sealed space 74 are not communicated with each other via the tooth groove 75 between the tooth traces 35. A pair of gears 32 is configured. Therefore, the composition restricts the free movement of the composition via the tooth gap 75 between the first storage portion 27 and the second storage portion 28, and the rotation direction R <b> 2 is based on the rotation of the pair of gears 32. Along with the movement of the tooth gap 75 from the upstream side toward the downstream side, the composition can be conveyed.

  On the other hand, as shown in FIG. 7, when the overlapping tooth groove 76 is not formed, the first storage portion 27 and the second storage portion 28 (see FIG. 5) communicate with each other via the tooth space 75 between the tooth traces 35. To do. Therefore, the composition freely moves through the tooth gap 75, and the composition is moved along with the movement of the tooth gap 75 from the upstream side to the downstream side in the rotation direction R2 based on the rotation of the pair of gears 32. It cannot be transported efficiently.

  On the other hand, according to this gear structure 4, the wide sheet | seat 7 can be conveyed with high efficiency, providing a high shearing force to the composition containing particle | grains and a resin component.

  Further, in this gear structure 4, the tooth groove 75 of the first lower inclined tooth 36 and the tooth groove 75 of the second lower inclined tooth 37 are projected in the radial direction from the rotational axis A 1 over the entire rotational axis A 1 direction. Sometimes, a plurality of overlapping tooth grooves 76 that overlap the inner side surface of the second casing 31, that is, the upper side surface 71 and the lower side surface 72 are formed. Therefore, the overlapping tooth groove 76 can reliably prevent communication between the first storage portion 27 and the second storage portion 28 via the tooth groove 75.

  Moreover, in this gear structure 4, if the length W2 in the rotation axis direction of the pair of gears 32 is 200 mm or more, the wide sheet 7 can be reliably conveyed.

  In the gear structure 4, even in a composition in which the volume ratio of the particles exceeds 30% by volume, the composition in which the particles are dispersed is applied to the sheet by a high shearing force based on the meshing of the pair of gears 32. 7 can be conveyed.

  In the sheet manufacturing apparatus 1, the composition is reliably conveyed to the sheet 7 while being deformed in the rotation axis direction A 1 using the gear structure 4, and then the sheet 7 deformed in the rotation axis direction A 1 is supported by the support roll. While being supported and transported by 51, it is passed through the gap with the protrusion 63.

  Therefore, the sheet 7 can be manufactured uniformly. Specifically, the sheet 7 can be formed with a uniform thickness.

  According to the sheet manufacturing apparatus 1, a composition in which particles and a resin component are sufficiently mixed in advance can be conveyed as a sheet 7 by the gear structure 4 by the kneading extruder 2.

  Therefore, the dispersibility with respect to the resin component of the particle | grains in the sheet | seat 7 obtained can be improved.

  According to this sheet manufacturing apparatus 1, the composition that is extruded from the kneading extruder 2 and reaches the supply unit 3 changes the conveyance direction of the composition from the right side while the conveyance direction is changed to the crossing direction in the supply unit 3. While changing forward, the kneaded material is supplied to the gear structure 4 via the first reservoir 27 so as to have a width W0 along the left-right direction.

  Thereby, the width W0 of the kneaded material supplied to the gear structure 4 can be expanded more reliably. Therefore, the wide sheet 7 can be more reliably manufactured.

  Further, according to the sheet manufacturing apparatus 1, the roll sheet 60 can be obtained by the winding unit 6.

  Then, if the sheet 7 is pulled out from the obtained roll-shaped sheet 60, for example, a heat conductive sheet such as a heat radiating sheet, for example, a conductive sheet such as an electrode material or a current collector, for example, an insulating sheet, for example, magnetic It can be suitably used as a sheet or the like.

Furthermore, when the particles are formed of an insulating material and the resin component contains an insulating thermosetting resin component, the sheet 7 is replaced with a thermosetting insulating resin sheet such as a thermosetting resin sheet. (Specifically, it can also be suitably used as a sealing sheet).
Second Embodiment
FIG. 8: shows the expanded view when the 1st gear of 2nd Embodiment of the gear structure of this invention is seen from the upper surface of a 2nd casing.

  In FIG. 8, the same members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the first embodiment, as shown in FIG. 6, a plurality of (two) overlapping tooth spaces 76 are provided in each of the tooth spaces 75 of the first lower inclined teeth 36 and the tooth spaces 75 of the second lower inclined teeth 37. However, in the present invention, it is sufficient that at least one overlapping tooth groove 76 is provided. For example, as shown in FIG. 8, one overlapping tooth groove 76 may be provided.

  As shown in FIG. 8, in one overlapping tooth groove 76, the left end portion of the first lower inclined tooth 36 and the right end portion of the second lower inclined tooth 37 (the central portion in the left-right direction of the first gear 33, that is, the connecting portion). Are opposed to the front end portion of the upper side surface 71 (see FIG. 5), the right end portion of the corresponding first lower inclined tooth 36 and the left end portion of the second lower inclined tooth 37 (both ends in the left-right direction of the first gear 33). Part) is opposed to the rear end of the upper side surface 71 without facing the first storage part 27 (see FIG. 5).

Also by the gear structure 4 of 2nd Embodiment, there can exist an effect similar to 1st Embodiment.
<Third Embodiment>
FIG. 9 shows an exploded perspective view of a pair of gears of the third embodiment of the gear structure of the present invention. FIG. 10 is a partially exploded perspective view of the pair of gears shown in FIG. 9 and the second casing that houses the gears. FIG. 11 is a front sectional view in which only the second casing of the gear structure shown in FIG. 10 is cut away. 12 shows a side cross-sectional view of the gear structure shown in FIG.

  9 to 12, members similar to those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 9, the gear structure 4 can be provided with a plurality of partition members 77.

  A plurality (eight) of the partition portions 77 are provided in the first gear 33 and the second gear 34. Specifically, the partition portion 77 includes the first lower inclined teeth 36 and the second lower inclined teeth 37. In correspondence with the first upper inclined teeth 38 and the second upper inclined teeth 39, two are provided. In addition, the partition 77 has the first lower inclined teeth 36, the second lower inclined teeth 37, the first upper inclined teeth 38, and the second upper inclined teeth 39, the inclined teeth 35 and the tooth grooves 75, in the rotation axis direction A1. The first gear 33 and the second gear 34 are interposed in the middle of the rotational axis direction A1.

  Moreover, the partition part 77 is provided with the partition parts 77A and 77B which are mutually arrange | positioned mutually in rotation axis direction A1, and make a pair. The pair of partition portions 77 composed of the partition portions 77A and 77B are arranged symmetrically from the central portion of the rotation axis direction A1 in the rotation axis direction A1, and are spaced apart from each other.

As shown in FIGS. 10-12, the partition part 77 is provided in any one of a pair of gear 32, and is the same height as the gear diameter (outer diameter) (blade edge circle) of the gear 32, and the gear 32 of the gear 32 is provided. The main partition 78 formed continuously along the circumferential direction and the other of the pair of gears 32 are provided corresponding to the main partition 78, and at the same height as the root circle of the gear 32, the gear A first auxiliary partition portion 79 continuously formed along the circumferential direction of 32, and a second auxiliary partition portion 80 formed so as to protrude from the second casing 31 so as to correspond to the first auxiliary partition portion 78. I have.

  In one of the pair of partition portions 77, that is, in the first partition portion 77A, as shown in FIG. 10 and FIG. 12 (particularly, see FIG. 12C), the main partition portion 78 includes the first gear 33. The first auxiliary partition portion 79 is provided in the second gear 34, and the second auxiliary partition portion 80 is provided in the second casing 31.

On the other hand, in the other of the pair of partition portions 77, that is, in the second partition portion 77B, the main partition portion 78 is provided in the second gear 34, specifically, the first auxiliary of the first partition portion 77A. The first auxiliary partitioning portion 79 is provided adjacent to the rotation axis direction A1 of the partition portion 79, and is provided on the first gear 33. Specifically, in the rotation axis direction A1 of the main partitioning portion 78 of the first partitioning portion 77A. Adjacently arranged, the second auxiliary partition portion 80 is provided in the second casing 31 and is disposed adjacent to the main partition portion 78 of the first partition portion 77A and the rotation axis direction A1 of the first auxiliary partition portion 79.

  Next, of the pair of first partition portion 77A and second partition portion 77B, the first partition portion 77A will be described. The second partition portion 77B has a configuration in which the first partition portion 77A is turned upside down, and thus the description thereof is omitted.

  As shown in FIG. 12 (c), the main partitioning portion 78 has a first shaft 25 of the first gear 33 as an axis and is substantially along a direction (vertical direction and front-rear direction) orthogonal to the rotation axis of the first gear 33. It is formed in a disk shape. The outer diameter of the main partition part 78 is formed substantially the same as the outer diameter of the first gear 33. The main partition 78 is not rotatable relative to the first shaft 25, is rotatable relative to the lower portion 61 of the second casing 31, and is slidable relative to the upper side surface 71 of the second casing 31. Is formed.

  The first auxiliary partition portion 79 is disposed adjacent to the main partition portion 78 in the radial direction. The first auxiliary partition portion 79 is formed in a substantially disk shape along the direction orthogonal to the rotation axis of the second gear 34 with the second shaft 26 of the second gear 34 as the axis. The outer diameter of the first auxiliary partition portion 79 is formed substantially the same as the diameter of the root circle of the second gear 34. Further, the peripheral surface of the first auxiliary partition portion 79 is in contact with the peripheral surface of the main partition portion 78 in the first gear 33 so as to allow rolling. The first auxiliary partition portion 79 is not rotatable relative to the second shaft 26, is rotatable relative to the upper portion 62 of the second casing 31, and is a lower side surface of the second auxiliary partition portion 80 described below. It is formed to be slidable with the (inner side surface).

  As shown in FIG. 10 and FIG. 12C, the second auxiliary partition portion 80 is provided on the upper portion 62 and the lower portion 61 of the second casing 31, and corresponds to the main partition portion 78 and the first auxiliary partition portion 79. And it is the shape which surrounds them, Comprising: It forms as the protrusion board 81 which protrudes so that those peripheral surfaces may be contacted from the inner surface of the 2nd casing 31. FIG. That is, the second auxiliary partition portion 80 extends in the circumferential direction so as to cover the entire peripheral surface of the first auxiliary partition portion 79 and the peripheral surface of the upper half portion of the main partition portion 78. It is formed in an A shape. The second auxiliary partition 80 is formed to be rotatable relative to the first auxiliary partition 79 and the main partition 78. Further, the inner side surface of the first auxiliary partition portion 79 receives the peripheral surfaces of the first auxiliary partition portion 79 and the main partition portion 78 so as to be slidable.

  And in this embodiment, since the partition part 77 blocks | prevents that a composition moves to the rotation axis direction A1 along the tooth gap 75, between the tooth traces of the 1st storage part 27 and the 2nd storage part 28 Communication through the tooth gap 75 can be reliably prevented.

  Therefore, the conveyance efficiency of the sheet 7 can be improved.

  Furthermore, the main partition part 78, the first auxiliary partition part 79, and the second auxiliary partition part 80 further ensure communication between the first storage part 27 and the second storage part 28 via the tooth gap 75 between the tooth traces. Can be prevented.

Therefore, the conveyance efficiency of the sheet 7 can be further improved.
<Modification>
In the third embodiment, the main partition portion 78 and the first auxiliary partition portion 79 are formed by inserting a substantially disc member that divides the pair of gears 32 in the rotation axis direction A1, respectively. Although not shown in the drawings, a main ring part 78 is formed by fitting (or winding) a substantially annular member around the peripheral surfaces of the pair of gears 32, and the inclined teeth 35 of the pair of gears 32 are cut. By lacking, the first auxiliary partition 79 can also be formed.

  FIG. 13 shows a front sectional view of a modification of the gear structure shown in FIG. FIG. 14 is a front sectional view of a modification of the gear structure shown in FIG.

  In FIG. 13 and FIG. 14, members similar to those in the third embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the third embodiment, the first partition portion 77A and the second partition portion 77B that form a pair are arranged adjacent to each other in the rotation axis direction A1, but, for example, as shown in FIG. It can also be arranged oppositely.

Moreover, although the partition part 77 is comprised from the 1st partition part 77A and the 2nd partition part 77B, as shown in FIG. 14, it can form only from the 1st partition part 77A, for example. Alternatively, although not shown, it can be formed only from the second partition portion 77B.
<Fourth embodiment>
FIG. 15: shows the front sectional view which notched only the 2nd casing of 4th Embodiment of the gear structure of this invention.

  In FIG. 15, the same members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In 3rd Embodiment, although the 2nd auxiliary partition part 80 is formed from the protrusion board 81, it can also be formed from the protrusion board 81 and the notch part 82, for example.

The main partition part 78 is formed at a height higher than the gear diameter (outer diameter) (cutting edge circle) of the pair of gears 32. That is, the main partition 78 in the first partition 77 </ b> A has an outer diameter larger than the outer diameter of the first gear 33.

  On the other hand, the first auxiliary partition portion 79 is provided corresponding to the main partition portion 78. Specifically, the first auxiliary partition portion 79 in the first partition portion 77A is the diameter of the root circle of the second gear 34. Has a smaller outer diameter.

The notch 82 is formed by recessing the lower portion 61 of the second casing 31 in the outer circumferential direction in the circumferential direction and recessed from the upper side 71. Specifically, the notch 82 is formed in a substantially half-ring shape. Further, the peripheral surface of the notch 82 is formed to be rotatable relative to the main partition 78. Moreover, the peripheral surface of the notch part 82 receives a part higher than the gear diameter (blade edge circle) of the main partition part 78 so that sliding is possible.

According to the fourth embodiment, the same effects as those of the third embodiment can be obtained.
<Fifth Embodiment>
FIG. 16: shows the front sectional view which notched only the 2nd casing of 5th Embodiment of the gear structure of this invention.

  In FIG. 16, members similar to those in the third embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the third embodiment, as shown in FIG. 11, the partition part 77 is formed with a main partition part 78 and a first auxiliary partition part 79 having different outer diameters. For example, as shown in FIG. 16, It can also be formed from only two main partition parts 78 having the same outer diameter.

  In FIG. 16, in the first partition portion 77A, a main partition portion 78 having the same outer diameter is provided in each of the first gear 33 and the second gear 34.

  The two main partition parts 78 are each formed at a height that is substantially half of the toothpaste L3, and are in contact with each other so as to allow rolling. On the other hand, the main partition 78 is formed to be slidable with the inner surface of the second auxiliary partition 80.

Also according to the fifth embodiment, the same effects as those of the third embodiment can be obtained.
<Sixth Embodiment>
FIG. 17: shows the front sectional view which notched only the 2nd casing of 6th Embodiment of the gear structure of this invention. FIG. 18: shows the front sectional view which notched only the 2nd casing of the modification of 6th Embodiment of the gear structure of this invention.

  In FIGS. 17 and 18, the same members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the first embodiment, the first storage portion 27 and the second storage portion 28 are formed in a substantially tapered shape in a side sectional view and a substantially U shape in a side sectional view, for example, as shown in FIG. Thus, it can also be formed in a substantially straight line shape in a side sectional view.

  In FIG. 17, the overlapping angle α that defines the sealed space 74 is, for example, 30 degrees or more, preferably 45 degrees or more, more preferably 60 degrees or more, and for example, 180 degrees or less, preferably 175 degrees or less, more preferably 170 degrees or less.

  In the above-described embodiment, the overlap angle α is set to 180 degrees or less. However, for example, as shown in FIG. 18, the overlap angle α may be set to exceed 180 degrees.

  In FIG. 18, the overlapping angle α is preferably 200 degrees or more, more preferably 220 degrees or more, and for example, 300 degrees or less, preferably 270 degrees or less.

  If the overlapping angle α exceeds 180 degrees, the sealed space 74 can be more reliably secured, and the communication between the first storage portion 27 and the second storage portion 28 via the tooth groove 75 is reliably prevented, A shearing force can be reliably applied to the composition.

DESCRIPTION OF SYMBOLS 1 Sheet manufacturing apparatus 2 Kneading extruder 4 Gear structure 5 Sheet adjustment part 6 Winding part 7 Sheet 21 1st casing 32 A pair of gear 33 1st gear 34 2nd gear 35 Inclined tooth 36 1st lower inclined tooth 37 1st 2 Lower inclined teeth 38 First upper inclined teeth 39 Second upper inclined teeth 50 Gap 51 Support roll 71 Upper side surface 72 Lower side surface 73 Housing space 74 Sealed space 75 Tooth groove 76 Duplicated tooth groove 77 Partition portion 77a First partition portion 77b First Two partition portions 78 Main partition portion 79 First auxiliary partition portion 80 Second auxiliary partition portion A1 Rotating axis direction L3 Toothing W2 Rotating axis direction length

Claims (10)

The gear, comprising a pair of gears and a casing that accommodates the pair of gears, configured to convey a composition containing particles and a resin component while being deformed in the direction of the rotation axis of the gear. A structure,
Each of the pair of gears includes oblique teeth that mesh with each other;
The oblique teeth are arranged adjacent to each other in the rotation axis direction, and include first and second oblique teeth having different tooth traces,
The teeth of the first and second inclined teeth are inclined outward in the rotational axis direction from the downstream side in the rotational direction of the gear toward the upstream side in the rotational direction,
The casing is provided with an accommodation space for accommodating the pair of gears so that a sealed space is formed between the inclined tooth and the inner surface of the casing.
The pair of gears is configured so that an upstream space upstream in the transport direction with respect to the sealed space and a downstream space downstream in the transport direction with respect to the sealed space do not communicate with each other via a tooth groove between the tooth traces. A gear structure characterized by comprising: The tooth gap of the first inclined tooth and the tooth groove of the second inclined tooth are in communication with each other,
In the tooth gap of the first inclined tooth and the tooth groove of the second inclined tooth, the overlapping tooth that overlaps the inner side surface of the casing when projected in the radial direction from the rotation axis over the entire rotation axis direction The gear structure according to claim 1, wherein at least one groove is formed. The partition further includes a partition for partitioning the tooth gap by extending in a direction crossing the tooth trace and preventing the composition from moving in the rotation axis direction along the tooth groove. The gear structure according to claim 1 or 2. The partition is
A main partition provided on either one of the pair of gears, the same as or higher than the cutting edge circle of the gear, and continuously formed along the circumferential direction of the gear;
The other one of the pair of gears is provided corresponding to the main partition portion, and is the same as or lower than the root circle of the gear, and is formed continuously along the circumferential direction of the gear. A partition,
4. The gear structure according to claim 3, wherein the casing includes a second auxiliary partition portion formed to be uneven so as to correspond to the main partition portion and / or the first auxiliary partition portion. 5. body.   The gear structure according to any one of claims 1 to 4, wherein a length of the pair of gears in a rotation axis direction is 200 mm or more.   The gear structure according to any one of claims 1 to 5, wherein the gear structure is configured to convey the composition in which the volume ratio of the particles exceeds 30% by volume. A sheet manufacturing apparatus configured to manufacture a sheet from a composition containing particles and a resin component,
The gear structure according to any one of claims 1 to 6, and
A movable support provided downstream of the gear structure in the conveyance direction and configured to support and convey the composition, and a doctor disposed to face the movable support so that a gap is provided. A sheet manufacturing apparatus comprising: a sheet adjusting unit including: The sheet manufacturing apparatus according to claim 7, further comprising a kneading extruder provided on the upstream side in the conveyance direction of the gear structure and configured to knead the particles and the resin component. Provided on the downstream side in the extrusion direction of the kneading extruder and on the upstream side in the conveyance direction of the gear structure, the composition crosses the conveyance direction so as to have a width along the extrusion direction of the kneading extruder. The sheet manufacturing apparatus according to claim 8, further comprising a supply unit configured to supply the gear structure from a direction. The winding part provided in the conveyance direction downstream side of the said sheet | seat adjustment part and comprised so that the said sheet | seat may be wound up in roll shape further is provided, The winding part provided in any one of Claims 7-9 characterized by the above-mentioned. Sheet manufacturing equipment.

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