JP2014069408A - Gear structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gear structure which can manufacture efficiently a wide sheet from a composition including a resin component.SOLUTION: A gear structure 4 comprises three gear pairs (21, 22, 23) and a casing 31 to store the gear pairs, each of the three gear pairs consists of a pair of gears, and each of the pair of gears has oblique teeth 35 engaging with each other. The oblique teeth 35 are aligned to be adjacent in the rotation axis direction and include first oblique teeth 36 and second oblique teeth 37, tooth traces of which are different to each other. The tooth traces of the first oblique teeth 36 and the second oblique teeth 37 are inclined to the outside in the rotation axis direction as they proceed from the downstream side of the gear rotation direction to the upper stream side of the rotation direction. The casing 31 includes a storage space to store a pair of gears so as to form a closed space 74 between the oblique teeth 35 and the inner surface of the casing 31. The three gear pairs (21, 22, 23) are arranged to face each other in the carrying direction.

Description

  The present invention relates to a gear structure, and more particularly to a gear structure configured to produce a sheet containing a resin component.

  Conventionally, gear pumps having a pair of gears are known as means for transferring fluid containing molten resin or the like.

  For example, there is a gear pump in which a double helical gear configured by connecting two sets of helical gears adjacent to each other in the rotation axis direction so that the directions of twisting of the gears are reversed is supported on each of the drive shaft and the driven shaft. It is known (see Patent Document 1).

  By using this double helical gear, the thrust force generated in the helical gear is reduced.

JP-A-8-14165

  By the way, it has been studied to form a composition containing a resin component into a wide sheet using the gear pump.

  However, the gear pump described in Patent Document 1 has a limit in securing the length in the rotation axis direction for forming a wide sheet.

  An object of the present invention is to provide a gear structure capable of forming a wide sheet from a composition containing a resin component.

  In order to achieve the above object, a gear structure of the present invention includes a plurality of gear pairs and a casing that accommodates the gear pairs, and a composition containing a resin component is applied in the direction of the rotation axis of the gear pairs. A gear structure configured to be conveyed while being deformed, wherein each of the plurality of gear pairs includes a pair of gears, and each of the pair of gears includes inclined teeth that mesh with each other; The teeth are arranged adjacent to each other in the rotational axis direction and include first and second oblique teeth having different tooth traces, and the tooth traces of the first and second oblique teeth are in the rotational direction of the gear. As it goes from the downstream side to the upstream side in the rotational direction, the casing is inclined outward in the rotational axis direction, and in the casing, the pair of gears and a sealed space is formed between the inclined teeth and the inner surface of the casing. So that the accommodation space to accommodate Vignetting, wherein the plurality of gear pairs is characterized in that the composition is disposed opposite to the conveyance direction is conveyed.

  According to such a gear structure, the composition that has been spread in the rotation axis direction by the gear pair upstream in the conveyance direction and is formed into a sheet shape is further spread in the rotation axis direction by the gear pair downstream in the conveyance direction. .

  As a result, the sheet can be transferred while being formed into a wider sheet.

  In the gear structure of the present invention, in the gear pairs arranged adjacent to each other in the transport direction, the length in the rotation axis direction of the gear pair on the downstream side in the transport direction is equal to the length of the gear pair on the upstream side in the transport direction. It is preferable that the length is longer than the length in the rotation axis direction.

  According to such a gear structure, when passing through the gear structure upstream in the conveying direction, the space through which the composition does not pass (that is, the volume of air (air) generated at both ends in the rotation axis direction of the gear structure) ) Can be reduced.

  As a result, the amount of air entrained by the composition transferred via the gear structure can be reduced, and the generation of pores contained in the resulting sheet can be suppressed.

  In the gear structure of the present invention, in the gear pairs arranged adjacent to each other in the transport direction, the first oblique tooth trace and the second oblique tooth in the gear pair on the downstream side in the transport direction. It is preferable that an angle formed by the streak is larger than an angle formed by the first oblique tooth trace and the second oblique tooth trace in the upstream gear pair in the transport direction.

  According to such a gear structure, the composition formed in a sheet shape and spread in the rotation axis direction by the pair of gears upstream in the conveying direction is further a gear having a loose tooth trace angle located downstream in the conveying direction. The pair further expands in the direction of the rotation axis.

  As a result, a wider sheet can be transferred while being uniformly formed.

  The gear structure of the present invention can reliably produce a wider sheet from a composition containing a resin component.

FIG. 1 shows a partially cutaway plan view and a partially enlarged view of an embodiment of a sheet manufacturing apparatus provided with a gear structure of the present invention. FIG. 2 shows a cross-sectional side view of FIG. FIG. 3 shows a partially enlarged view of FIG. 4 shows an exploded perspective view of a pair of gears of the gear structure shown in FIG. FIG. 5 is a side sectional view for explaining the meshing of the pair of gears shown in FIG. 4. FIG. 5 (a) is a diagram illustrating the downstream end of the convex surface of the inclined teeth of the first lower gear and the oblique angle of the first upper gear. (B) shows a state in which the middle part of the convex surface of the oblique tooth of the first lower gear and a middle part of the concave surface of the oblique tooth of the first upper gear mesh with each other. c) shows a state in which the upstream end portion of the convex surface of the inclined teeth of the first lower gear and the upstream end portion of the concave surface of the inclined teeth of the first upper gear are engaged with each other. FIG. 6 shows a plan view of another embodiment of the gear structure of the present invention. FIG. 7 shows a plan view of another embodiment of the gear structure of the present invention. FIG. 8 is a side sectional view for explaining the meshing of a pair of gears (involute curves) according to another embodiment of the gear structure of the present invention.

  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”. In FIG. 1, the right side is one side in the rotational axis direction of a pair of gears (described later), and the left side is the other side in the rotational axis direction. In addition, the rear side is the upstream side in the conveyance direction of the composition, and the front side is the downstream side in the conveyance direction of the composition. Further, the directions of the drawings after FIG. 2 are the same as those described in FIG.

  In FIG. 1, a sheet manufacturing apparatus 1 is configured to manufacture a sheet from a composition containing a resin component to be described later. For example, a kneading extruder 2, a gear structure 4, a sheet adjustment unit 5, and the like. And a winding unit 6. The kneading extruder 2, the gear structure 4, the sheet adjusting unit 5, and the winding unit 6 are arranged in series in the sheet manufacturing apparatus 1. That is, the sheet manufacturing apparatus 1 is configured to convey a composition or sheet 7 (see FIG. 2) described later in a straight line.

  The kneading extruder 2 is provided on the rear 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 front-rear direction. Further, the rear side of the cylinder 11 is closed.

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

  A kneader outlet 15 opening forward is formed at the front 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 along the front-rear direction.

  The kneading screw 12 has a rotation axis parallel to the axis of the cylinder 11. The kneading screw 12 is provided in the cylinder 11 along the front-rear 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 extruder 2 is provided with a motor (not shown) connected to the kneading screw 12 on the rear side of the cylinder 11.

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

  As shown in FIG. 1, the gear structure 4 is provided on the front side of the kneading extruder 2 via a connecting pipe 17. The gear structure 4 includes a casing 31 and a plurality (three) of gear pairs (a first gear pair 21, a second gear pair 22, and a third gear pair 23) accommodated in the casing 31. As shown in FIG. 1, the gear structure 4 is also a gear pump that conveys the composition supplied from the kneading extruder 2 to the sheet adjusting unit 5.

  The casing 31 is formed integrally with the connecting pipe 17, is connected to the front side of the kneading extruder 2 via the connecting pipe 17, and the front is opened in the left-right direction. The casing 31 is formed in a staircase shape so that the length in the left-right direction increases as it goes to the front side, and is formed so as to be symmetric with respect to the center in the left-right direction.

  The casing 31 includes an inflow port 27, a plurality of (three) gear housing portions (a first housing portion 81, a second housing portion 82, and a third housing portion 83), a discharge passage 44, and a discharge port 46. Is provided.

  The inflow port 27 communicates with the front side of the connecting pipe 17 and is formed in substantially the same shape as the inner peripheral surface of the connecting pipe 17 in a sectional view.

  As shown in FIG. 3, the first accommodating portion 81 is provided for accommodating the first gear pair 21, and among the three gear accommodating portions, the first accommodating portion 81 is located on the most upstream side (most rearmost) in the transport direction. Has been placed. The 1st accommodating part 81 is provided with the 1st lower part 61a and the 1st upper part 62a connected to the upper side of the 1st lower part 61a.

  Further, the first upper side surface (inner side surface) 71a of the first lower portion 61a and the first lower side surface (inner side surface) 72a of the first upper portion 62a have an arcuate surface shape (half-circumferential surface shape divided into two). A first gear accommodation space 73a is defined as an accommodation space for accommodating the first gear pair 21. The first gear housing space 73a is formed so as to extend in the vertical direction in a cross-sectional view. The first lower portion 61a and the first upper portion 62a are formed in the casing 31 over the left-right direction. Moreover, the 1st sealed space 74a as a sealed space mentioned later is provided in the upper end part and lower end part of the 1st gear accommodation space 73a.

  The second accommodating portion 82 is provided to accommodate the second gear pair 22, on the downstream side (front side) in the transport direction of the first accommodating portion 81 and on the upstream side (rear side) of the third accommodating portion 83. Has been placed. The 2nd accommodating part 82 is provided with the 2nd lower part 61b and the 2nd upper part 62b connected to the upper side of the 2nd lower part 61b.

  Further, the second upper side surface 71b (inner side surface) of the second lower portion 61b and the second lower side surface 72b (inner side surface) of the second upper portion 62b are formed in a circular arc shape (half-circumferential surface shape divided into two). A second gear accommodating space 73b is defined as an accommodating space for accommodating the second gear pair 22. The second gear housing space 73b is formed so as to extend in the vertical direction in a cross-sectional view. Note that the second lower portion 61b and the second upper portion 62b are formed in the left-right direction in the casing 31. Moreover, the 2nd sealed space 74b as a sealed space is provided in the upper end part and lower end part of the 2nd gear accommodation space 73b.

  The left and right lengths of the second accommodating portion 82 and the second lower portion 61b, the second upper portion 62b, and the second sealed space 74b formed in the second accommodating portion 82 are the first accommodating portion 81, the first lower portion 61a, and the first length, respectively. Each of the upper part 62a and the first sealed space 74a is formed longer than the length in the left-right direction, and is formed in substantially the same shape in a side sectional view.

  The third accommodating portion 83 is provided to accommodate the third gear pair 23 and is disposed on the downstream side (front side) in the transport direction of the second accommodating portion 82. The 3rd accommodating part 83 is provided with the 3rd lower part 61c and the 3rd upper part 62c connected to the upper side of the 3rd lower part 61c.

  The third lower side surface 71c (inner side surface) of the third lower portion and the third lower side surface 72c (inner side surface) of the third upper portion are formed in an arcuate surface shape (a semicircular surface shape divided into two). A third gear housing space 73c as a housing space for housing the third gear pair 23 is defined. The third gear housing space 73c is formed so as to extend in the vertical direction in a sectional view. In addition, the 3rd lower part 61c and the 3rd upper part 62c are formed over the left-right direction in the casing. Moreover, the 3rd sealed space 74c as a sealed space is provided in the upper end part and lower end part of the 3rd gear accommodation space 73c.

  The third storage portion 83 is provided with a third storage portion 30 on the front side of the third gear storage space 73c. The 3rd storage part 30 is formed so that it may extend in the left-right direction, and is formed in the cross-sectional view substantially U shape which the front side curves as it goes to the front side. The front end of the third reservoir 30 communicates with the discharge passage 44.

  The lengths in the left-right direction of the third accommodating portion 83 and the third lower portion 61c, the third upper portion 62c, and the third sealed space 74c formed thereon are the second accommodating portion 82, the second lower portion 61b, and the second upper portion 62b. In addition, each of the second sealed spaces 74b is formed longer than the length in the left-right direction, and is formed in substantially the same shape in a side sectional view.

  A first reservoir 28 is provided between the first gear housing space 73a and the second gear housing space 73b. The first reservoir 28 has a constant vertical length and is formed in the left-right direction.

  A second reservoir 29 is provided between the second gear housing space 73b and the third gear housing space 73c. The second reservoir 29 has a constant vertical length and is formed in the left-right direction.

  The discharge passage 44 is provided on the front side of the third storage unit 30, is partitioned by a lower side wall 47 and an upper side wall 48 that are spaced apart from each other in the vertical direction, and is formed to be opened forward. Yes.

  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 discharge passage 44 communicates with the front side of the third reservoir 30 and 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.

  The discharge port 46 is formed so as to be the same as the left and right direction and the vertical direction of the discharge passage 44 and is opened forward.

  As shown in FIG. 4, the first gear pair 21 accommodated in the first accommodating portion 81 is, for example, a double helical gear, and specifically includes a pair of gears. A first upper gear 34a is provided.

  The first lower shaft 25a, which is the rotation shaft of the first lower gear 33a, is provided in the casing 31 (see FIG. 1) so as to extend in the left-right direction.

  The first upper shaft 26a, which is the rotation shaft of the first upper gear 34a, is provided in the casing 31 (see FIG. 1) so as to extend in parallel with the first lower shaft 25a. The first upper shaft 26a is disposed to face the first lower shaft 25a so as to face upward.

  Each of the first lower gear 33a and the first upper gear 34a is housed in each of the first lower portion 61a and the first upper portion 62a of the first housing portion 81.

  Each of the first lower gear 33a and the first upper gear 34a includes oblique teeth 35a that mesh with each other, as shown in FIG.

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

  Specifically, the tooth trace of the first lower right inclined tooth 36a is inclined from the left side (center side) to the right side (right end side) from the downstream side in the rotational direction R2 toward the upstream side in the rotational direction R2. . On the other hand, the tooth traces of the first lower left oblique teeth 37a are formed symmetrically with respect to the tooth traces of the first lower right oblique teeth 36a with respect to the central portion in the left and right direction of the first lower gear 33a. Is inclined from the right side (center side) to the left side (left end side) from the downstream side in the rotation direction R2 toward the upstream side in the rotation direction R2.

  The first upper gear 34a is formed vertically symmetrically with respect to the first lower gear 33a, and is configured to mesh with the first lower gear 33a. Specifically, the first upper gear 34a and the first lower right inclined tooth 36a A first upper right oblique tooth 38a that meshes with a first upper left oblique tooth 39a that meshes with a first lower left oblique tooth 37a is integrally provided.

  As shown in FIG. 5, the first gear pair 21 is configured such that the meshed portion indicated by a black circle is in contact with the first lower gear 33 a and the first upper gear 34 a in a dot shape in a side sectional view. Therefore, it is a side section point contact type. In addition, the first gear pair 21 has a meshing portion that is formed in a string shape of the first lower gear 33a and the first upper gear 34a along the tooth traces of the first gear pair 21. Also, the line contact type.

  The respective inclined teeth 35a of the first gear pair 21 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.

  As shown in FIG. 3, in the casing 31, the first gear pair 21 is connected between the inclined teeth 35a of the first lower gear 33a and the first upper side surface 71a of the first lower portion 61a, and the first upper gear 34a. A first gear receiving space 73a is provided so that a first sealed space 74a is formed between the inclined teeth 35a and the first lower side surface 72a of the first upper portion 62a.

  That is, the first upper side surface 71a and the first lower side surface 72a are formed in a circular arc shape in a sectional view having the same curvature as the diameter of the first gear pair 21, and the radial end portions (convex surfaces) of the first gear pair 21 are formed. It is formed in a substantially circular arc shape in a sectional view that is the same as the rotation trajectory of 43 apexes (see FIG. 5). Thus, the first sealed space 74a covers the tooth gap 75 between the tooth traces of the inclined teeth 35a by the first upper side surface 71a and the first lower side surface 72a. The first sealed space 74a is partitioned by the tooth gap 75, the first upper side surface 71a, and the first lower side surface 72a.

  Further, as shown in FIG. 4, the tooth groove 75 of the first lower right inclined tooth 36a and the tooth groove 75 of the first lower left inclined tooth 37a communicate with each other.

  Depending on the angle of the inclined teeth 35 a of the first gear pair 21, the outer shape, valley diameter, tooth gap dimension, meshing ratio, etc. of the first gear pair 21 are set as appropriate.

  The second gear pair 22 accommodated in the second accommodating portion 82 is, for example, a double helical gear, and specifically includes a pair of gears, and includes a second lower gear 33b and a second upper gear 34b. ing.

  Each of the second lower gear 33b and the second upper gear 34b is housed in each of the second lower portion 61b and the second upper portion 62b of the second housing portion 82. That is, the second lower gear 33b is disposed opposite to the front side of the first lower gear 33a, and the second upper gear 34b is disposed opposite to the front side of the first upper gear 34a.

  The second lower shaft 25b, which is the rotation shaft of the second lower gear 33b, is provided in the casing 31 (see FIG. 1) so as to extend in the left-right direction.

  The second upper shaft 26b, which is the rotation shaft of the second upper gear 34b, is provided in the casing 31 (see FIG. 1) so as to extend in parallel with the second lower shaft 25b. Further, the second upper shaft 26b is disposed to face the second lower shaft 25b so as to face upward.

  Each of the second lower gear 33b and the second upper gear 34b includes oblique teeth 35b that mesh with each other.

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

  Specifically, the tooth trace of the second lower right oblique tooth 36b is inclined from the left side (center side) to the right side (right end side) from the downstream side in the rotational direction R2 toward the upstream side in the rotational direction R2. . On the other hand, the tooth trace of the second lower left oblique tooth 37b is formed symmetrically with respect to the tooth trace of the second lower right oblique tooth 36b with respect to the center in the left-right direction of the second lower gear 33b. Is inclined from the right side (center side) to the left side (left end side) from the downstream side in the rotation direction R2 toward the upstream side in the rotation direction R2.

  The second upper gear 34b is formed vertically symmetrically with respect to the second lower gear 33b, and is configured to mesh with the second lower gear 33b. Specifically, the second upper gear 34b and the second lower right inclined tooth 36b A second upper right oblique tooth 38b that meshes with a second upper left oblique tooth 39b that meshes with a second left lower oblique tooth 37b is integrally provided.

  Similar to the first gear pair 21, the second gear pair 22 is of a side cross-section point contact type and a line contact type, as shown in FIG.

  The inclined teeth 35b of the second gear pair 22 are provided at intervals in the rotational direction R2 and connect the concave surfaces formed so as to be curved inward in the radial direction and the respective concave surfaces. A curved surface integrally including a convex surface formed so as to be curved radially outward from the portion.

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

  As shown in FIG. 3, the casing 31 includes a second gear pair 22 between the inclined teeth 35 b of the second lower gear 33 b and the second upper side surface 71 b of the second lower portion 61 b and the second upper gear 34 b. A second gear receiving space 73b is provided so that a second sealed space 74b is formed between the inclined tooth 35b and the second lower side surface 72b of the second upper portion 62b.

  That is, the second upper side surface 71b and the second lower side surface 72b are formed in an arc shape in cross section having the same curvature as the diameter of the second gear pair 22, and the radial end portions (convex surfaces) of the second gear pair 22 are formed. Is formed in a substantially arc shape in cross-sectional view, which is the same as the rotation trajectory at the apex. Thus, the second sealed space 74b covers the tooth space between the tooth traces of the inclined teeth 35b by the second upper side surface 71b and the second lower side surface 72b. The second sealed space 74b is partitioned by the tooth gap and the second upper side surface 71b and the second lower side surface 72b.

  In addition, the tooth groove of the second lower right inclined tooth 36b and the tooth groove of the second lower left inclined tooth 37b communicate with each other.

  The horizontal length of the second lower gear 33b is longer than the horizontal length of the first lower gear 33a, and the horizontal length of the second upper gear 34b is the horizontal length of the first upper gear 34a. It is formed longer than this. Note that the length in the left-right direction of the second upper gear 34b is substantially the same as the length in the left-right direction of the second lower gear 33b.

  The inclination of the tooth trace of the inclined tooth 35b of the second lower gear 33b is gentler than the inclination of the tooth trace of the inclined tooth 35a of the first lower gear 33a. That is, the angle formed by the second lower right inclined tooth 36b and the second lower left inclined tooth 37b is larger than the angle formed by the first lower right inclined tooth 36a and the first lower left inclined tooth 37a. Similarly, the inclination of the inclined line 35b of the second upper gear 34b is gentler than the inclination of the inclined line 35a of the inclined line 35a of the first upper gear 34a.

  Depending on the angle of the inclined teeth 35b of the second gear pair 22, the outer shape, valley diameter, tooth gap size, meshing ratio, etc. of the second gear pair 22 are set as appropriate.

  The third gear pair 23 accommodated in the third accommodating portion 83 is, for example, a double helical gear, and specifically includes a pair of gears, and includes a third lower gear 33c and a third upper gear 34c. ing.

  The third lower gear 33c and the third upper gear 34c are accommodated in the third lower portion 61c and the third upper portion 62c of the third accommodating portion 83, respectively. That is, the third lower gear 33c is disposed opposite to the front side of the second lower gear 33b, and the third upper gear 34c is disposed opposite to the front side of the second upper gear 34b.

  The third lower shaft 25c, which is the rotation shaft of the third lower gear 33c, is provided in the casing 31 (see FIG. 1) so as to extend in the left-right direction.

  The third upper shaft 26c, which is the rotation shaft of the third upper gear 34c, is provided in the casing 31 (see FIG. 1) so as to extend in parallel with the third lower shaft 25c. Further, the third upper shaft 26c is disposed to face the third lower shaft 25c so as to face upward.

  Each of the third lower gear 33c and the third upper gear 34c includes oblique teeth 35c that mesh with each other.

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

  Specifically, the tooth trace of the third lower right oblique tooth 36c is inclined from the left side (center side) to the right side (right end side) from the downstream side in the rotational direction R2 toward the upstream side in the rotational direction R2. . On the other hand, the tooth trace of the third lower left inclined tooth 37c is formed symmetrically with respect to the tooth trace of the third lower right inclined tooth 36c with respect to the central portion in the left and right direction of the third lower gear 33c. Is inclined from the right side (center side) to the left side (left end side) from the downstream side in the rotation direction R2 toward the upstream side in the rotation direction R2.

  The third upper gear 34c is formed vertically symmetrically with respect to the third lower gear 33c, and is configured to mesh with the third lower gear 33c. Specifically, the third upper gear 34c and the third lower right inclined tooth 36c A third upper right oblique tooth 38c that meshes with a third upper left oblique tooth 39c that meshes with a third lower left oblique tooth 37c is integrally provided.

  As with the first gear pair 21, the third gear pair 23 is of a side cross-section point contact type and a line contact type, as shown in FIG. 5.

  The inclined teeth 35c of the third gear pair 23 are provided at intervals in the rotational direction R2, and connect the concave surfaces formed so as to be curved inward in the radial direction, and the respective circumferential ends of the concave surfaces. A curved surface integrally including a convex surface formed so as to be curved radially outward from the portion.

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

  As shown in FIG. 3, in the casing 31, the third gear pair 23 is provided between the inclined teeth 35c of the third lower gear 33c and the third upper side surface 71c of the third lower portion 61c, and the third upper gear 34c. A third gear receiving space 73c is provided so that a third sealed space 74c is formed between the inclined teeth 35c and the third lower side surface 72c of the third upper portion 62c.

  That is, the third upper side surface 71c and the third lower side surface 72c are formed in a circular arc shape in a sectional view having the same curvature as the diameter of the third gear pair 23, and the radial ends of the third gear pair 23 (convex surface) Is formed in a substantially arc shape in cross-sectional view, which is the same as the rotation trajectory at the apex. As a result, the third sealed space 74c covers the tooth spaces between the tooth traces of the inclined teeth 35c with the third upper side surface 71c and the third lower side surface 72c. The third sealed space 74c is partitioned by the tooth gap and the third upper side surface 71c and the third lower side surface 72c.

  Further, the tooth groove of the third lower right inclined tooth 36c and the tooth groove of the third lower left inclined tooth 37c are communicated with each other.

  The horizontal length of the third lower gear 33c is formed longer than the horizontal length of the second lower gear 33b, and the horizontal length of the third upper gear 34c is longer than the horizontal length of the second upper gear 34b. It is formed long. Note that the length of the third upper gear 34c in the left-right direction is substantially the same as the length of the third lower gear 33c in the left-right direction.

  The inclination of the tooth trace of the inclined tooth 35c of the third lower gear 33c is gentler than the inclination of the tooth trace of the inclined tooth 35b of the second lower gear 33b. That is, the angle formed by the third lower right inclined tooth 36c and the third lower left inclined tooth 37c is larger than the angle formed by the second lower right inclined tooth 36b and the second lower left inclined tooth 37b. Similarly, the inclination of the inclined teeth 35c of the third upper gear 34c is gentler than the inclination of the inclined teeth 35b of the second upper gear 34b.

  Depending on the angle of the inclined teeth 35 c of the third gear pair 23, the outer shape, valley diameter, tooth gap dimension, meshing ratio, etc. of the third gear pair 23 are appropriately set.

  Next, the meshing of the gear pair on the curved surface 41 will be described with reference to FIGS. 5A to 5C taking the first gear pair 21 as an example. The meshing of the second gear pair 22 and the third gear pair 23 will be described in the same manner as the meshing of the first gear pair 21.

  First, as shown in FIG. 5A, the downstream end portion in the rotational direction R2 of the convex surface 43 of the first lower gear 33a and the downstream end portion in the rotational direction R2 of the concave surface 42 of the first upper gear 34a. When engaged, as shown in the arrows in FIG. 5A and FIG. 5B, when the first lower gear 33a and the first upper gear 34a rotate in the rotation direction R2, the convex surface 43 of the first lower gear 33a. The middle part in the rotational direction R2 and the middle part in the rotational direction R2 of the concave surface 42 of the first upper gear 34a mesh with each other. Subsequently, as shown by the arrows in FIG. 5B and FIG. 5C, when the first lower gear 33a and the first upper gear 34a rotate in the rotation direction R2, the rotation direction of the convex surface 43 of the first lower gear 33a. The upstream end of R2 meshes with the upstream end of the concave surface 42 of the first upper gear 34a in the rotational direction R2. That is, the meshing portion of the convex surface 43 of the first lower gear 33a and the concave surface 42 of the first upper gear 34a is successively and continuously at the downstream end portion, the middle portion, and the upstream end portion in the rotational direction R2 on each surface. Moving.

  Subsequently, although not shown, the meshing portions of the concave surface 42 of the first lower gear 33a and the convex surface 43 of the first upper gear 34a are also downstream end portions, intermediate portions, and upstream end portions in the rotational direction R2 on each surface. Move sequentially.

  Accordingly, the meshing portion of the curved surface 41 of the first lower gear 33a and the curved surface 41 of the first upper gear 34a moves continuously along the rotational direction R2. This movement of the meshing portion prevents the storage portion 65 (see FIG. 8 described later) in which the composition is accumulated during the conveyance of the composition.

  The gear structure 4 includes a first lower shaft 25a and a first upper shaft 26a of the first gear pair 21, a second lower shaft 25b and a second upper shaft 26b of the second gear pair 22, and a third gear. A motor (not shown) connected to the third lower shaft 25c and the third upper shaft 26c of the pair 23 is provided.

  As shown in FIGS. 1 and 3, the seat adjustment portion 5 is provided on the front side of the gear structure 4 so as to include the protrusion 63 of the upper side wall 48. 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. 3, the protrusion 63 adjusts the role of the wall that defines the discharge port 46 of the casing 31 in the gear structure 4 and the thickness of the composition discharged from the discharge port 46 in the sheet adjustment unit 5. It has both the role of a doctor (or knife).

  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 lower shaft 25a and the first upper shaft 26a of the first gear pair 21, 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 type and blending ratio of the resin components and the target width and thickness T1 of the sheet 7.

  As shown in FIG. 4, the rotation axis direction length (left-right direction length) W1 of each gear (first lower gear 33a and first upper gear 34a) of the first gear pair 21 is, for example, 150 mm or more, preferably , 200 mm or more, and for example, 1650 mm or less, preferably 750 mm or less.

  The length in the rotation axis direction of each gear of the second gear pair 22 is, for example, 1.1 times or more, preferably 1.2 times or more, the length W1 in the rotation axis direction of each gear of the first gear pair 21. Also, for example, it is 3 times or less, preferably 2 times or less.

  If the length in the rotation axis direction of each gear of the second gear pair 22 (second lower gear 33b and second upper gear 34b) is equal to or greater than the lower limit, the sheet conveyed from the first gear pair is placed on both outer sides of the rotation axis. And can be formed into a wider sheet 7. On the other hand, if the length in the rotation axis direction is not more than the above upper limit, the gear structure can be downsized.

  Specifically, the length in the rotation axis direction of each gear of the second gear pair 22 is, for example, 180 mm or more, preferably 250 mm or more, and for example, 1800 mm or less, preferably 850 mm or less.

  The length in the rotation axis direction of each gear (the third lower gear 33c and the third upper gear 34c) of the third gear pair 23 is, for example, 1.1 times the length in the rotation axis direction of each gear of the second gear pair 22. Above, preferably 1.2 times or more, for example, 3 times or less, preferably 2 times or less. If the length in the rotation axis direction of each gear of the third gear pair 23 is equal to or greater than the lower limit, the sheet conveyed from the second gear pair 22 is further spread to both outer sides of the rotation axis to form a wider sheet 7. can do. On the other hand, if the length in the rotation axis direction is not more than the above upper limit, the gear structure can be downsized.

  Specifically, the length in the rotation axis direction of each gear of the third gear pair 23 is, for example, 200 mm or more, preferably 300 mm or more, and for example, 2000 mm or less, 1000 mm or less.

  The gear diameter of the first gear pair 21 (the diameter (outer diameter) of the first lower gear 33a and the first upper gear 34a, specifically, the diameter of the cutting edge circle) is the pressure at the time of conveying the composition. Is set so as not to be distorted, for example, 10 mm or more, preferably 20 mm or more, and for example, 200 mm or less, preferably 80 mm or less. The diameter of the root circle of the first gear pair 21 (the value obtained by subtracting the tooth depth L3 described below from the gear diameter) is, for example, 8 mm or more, preferably 10 mm or more, and, for example, 198 mm or less. Preferably, it is also 194 mm or less. The gear diameters of the second gear pair 22 and the third gear pair 23 and the diameter of the root circle are the same as those of the first gear pair 21.

  As shown in FIG. 5, the tooth depth L3 of the first gear pair 21 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 in the rotation axis direction A1 of the inclined teeth 35a of the first gear pair is, for example, 5 mm or more, preferably 10 mm or more, and for example, 30 mm or less, preferably 25 mm or less. The tooth shift and pitch interval of the second gear pair 22 and the third gear pair 23 are the same as those of the first gear pair 21.

  Further, as shown in the partially enlarged view of FIG. 1, the inclination angle α of the tooth trace of the inclined tooth 35a of the first gear pair 21 with respect to the rotation axis of the gear (in FIG. 1, the inclined tooth 35a and the alternate long and short dash line form). The angle α) is, for example, more than 0 degree, preferably 5 degrees or more, more preferably 15 degrees or more, and for example, less than 75 degrees, preferably 70 degrees or less, more preferably 60 degrees. Also below the degree. The range of tilt angles of the second gear pair 22 and the third gear pair 23 is substantially the same as the range of tilt angles of the first gear pair 21.

  Note that the inclination angle α of the inclined teeth 35 a of the first gear pair 21 is formed to be larger than the inclination angle of the inclined teeth 35 b of the second gear pair 22. The difference in inclination angle is, for example, 1 degree or more, preferably 3 degrees or more, and for example, 35 degrees or less, preferably 30 degrees or less.

  The inclination angle of the inclined teeth 35b of the second gear pair 22 is formed to be larger than the inclination angle of the inclined teeth 35c of the third gear pair 23. The difference in inclination angle is, for example, 1 degree or more, preferably 3 degrees or more, and for example, 35 degrees or less, preferably 30 degrees or less.

  Further, as shown in the partial enlarged view of FIG. 1, the angle β formed by the tooth trace of the first lower right oblique tooth 36a and the tooth trace of the first lower left oblique tooth 37a in the first gear pair 21 is, for example, 0 More than 30 degrees, preferably 30 degrees or more, more preferably 40 degrees or more, for example, less than 170 degrees, preferably 150 degrees or less, more preferably 140 degrees or less. The angle formed by the tooth trace in the second gear pair 22 (the angle formed by the tooth trace of the second lower right inclined tooth 36b and the tooth trace of the second lower left inclined tooth 37b) and the angle formed by the tooth trace in the third gear pair 23 ( (The angle formed by the tooth trace of the third lower right inclined tooth 36c and the tooth trace of the third lower left inclined tooth 37c) is substantially the same as the angle range formed by the tooth trace in the first gear pair 21. is there.

  The angle formed by the tooth traces in the third gear pair 23 is formed to be larger than the angle formed by the tooth traces in the second gear pair 22. The difference in angle is, for example, 2 degrees or more, preferably 6 degrees or more, and for example, 70 degrees or less, preferably 60 degrees or less.

  Further, the angle formed by the tooth traces in the second gear pair 22 is formed to be larger than the angle formed by the tooth traces in the first gear pair 21. The difference in angle is, for example, 2 degrees or more, preferably 6 degrees or more, and for example, 70 degrees or less, preferably 60 degrees or less.

  As shown in FIG. 3, the distance in the front-rear direction of the gap 50 is appropriately set according to the dimensions 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 the composition containing the resin component using the sheet manufacturing apparatus 1 will be described.

  Examples of the resin component include resin components such as a thermosetting resin component and a thermoplastic resin component.

  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, ethyl (meth) acrylate, butyl (meth) acrylate, (meth) Hexyl acrylate, 2-ethylhexyl (meth) acrylate, nonyl (meth) acrylate, isononyl (meth) acrylate, decyl (meth) acrylate, isodecyl (meth) acrylate, undecyl (meth) acrylate, (meth Linear or branched alkyl groups having 30 or less carbon atoms such as lauryl acrylate, tridecyl (meth) acrylate, tetradecyl (meth) acrylate, octadecyl (meth) acrylate and octadodecyl (meth) acrylate (Meth) acrylic acid alkyl ester Preferably, the alkyl moieties are linear (meth) acrylic acid alkyl esters having 1 to 18 carbon atoms.

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 mPa · s or more, preferably 50 mPa · s. In addition, for example, it is 10000 mPa · s or less, preferably 1000 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.

  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.

  The composition may contain particles.

  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 mixing ratio when the composition contains particles 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, more preferably. 60 volume% or more, more preferably 70 volume% or more, for example, 98 volume% or less, preferably 95 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.

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

  Further, in the sheet manufacturing apparatus 1, the kneading extruder 2 and the gear structure 4 are adjusted to a predetermined temperature and rotation speed. The temperature of the kneading extruder 2 and the gear structure 4 is, for example, higher than the softening temperature when the resin component contains a thermoplastic resin component, and the resin component contains a thermosetting resin component. In this case, the temperature is lower than the curing temperature, specifically, for example, 50 ° C. or higher, preferably 70 ° C. or higher, and for example, 200 ° C. or lower, preferably 150 ° C. or lower.

  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 T2 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 resin component contained in the composition is kneaded and extruded by the rotation of the kneading screw 12 while being heated by the block heater, and the composition is passed through the connecting pipe 17 from the kneader outlet 15. It reaches the inlet 27 in the gear structure 4 (kneading extrusion process).

  Thereafter, the composition is deformed in the gear structure 4 by the three gear pairs in the rotational axis direction A1 of the gear pairs, formed as a sheet, and conveyed forward (deformed conveying step).

  Specifically, first, the composition is formed into a sheet by being spread from the central portion in the rotation axis direction to both ends by the meshing of the first gear pair 21. And it is conveyed ahead (1st storage part 28).

  Specifically, as shown in FIG. 3, in the first accommodating portion 81, the composition is formed between the first lower portion 61 a and the first lower gear 33 a from the upper end portion and the lower end portion of the front portion of the inflow port 27. The first upper portion 62a and the first upper gear 34a are pushed forward along the rotational direction R2 of the first gear pair 21 while being pushed and expanded in the left-right direction. It reaches.

  At this time, the composition adhering to the rotating first lower gear 33a at the entrance (rear side) of the first gear housing space 73a is pressed by the first lower portion 61a, and therefore the first sealed space 74a (tooth groove 75). ) Is moved in the left-right direction, while the composition adhering to the rotating first upper gear 34a is pressed by the first upper portion 62a, and therefore moves in the left-right direction in the first sealed space 74a (tooth groove 75). . For this reason, the composition is pushed forward along the rotation direction R2 of the first gear pair 21 while being spread in the left-right direction.

  Thereafter, the composition is prevented by the meshing portion of the oblique teeth 35a while being prevented from flowing back (returning backward) to the inlet 27 via the meshing portion (see FIG. 5) of the oblique teeth 35a. The sheet is spread in the left-right direction and formed as a sheet. Specifically, as shown in FIG. 4, in the right side portion of the gear structure 4, the direction of the rotation axis in the first gear pair 21 is engaged by the engagement of the first lower right inclined tooth 36 a and the first upper right inclined tooth 38 a. It is spread from the center of the head toward the right edge. On the other hand, in the left part of the gear structure 4, the first left lower inclined teeth 37 a and the first upper left inclined teeth 39 a are engaged to expand from the central portion in the rotation axis direction of the first gear pair 21 toward the left end portion. It is done.

  At this time, the first gear pair 21 is formed with a short length in the rotational axis direction. Therefore, the space (air) at the outer end portion in the rotation axis direction of the first gear pair 21 is reduced, and as a result, the amount of air entrained by the composition can be reduced.

  Next, the sheet conveyed to the first storage unit 28 is further pushed out in the left-right direction by the engagement of the second gear pair 22 to form a wider sheet. And it is conveyed ahead (2nd storage part 29).

  At this time, the sheet is further expanded in the left-right direction by the same action as when the composition passes through the first accommodating portion 81. The inclination angle of the inclined teeth 35b of the second gear pair 22 is gentler than the inclination angle of the inclined teeth 35a of the first gear pair. Therefore, the composition (sheet) is more evenly spread in the left-right direction by the meshing portion of the inclined teeth 35 b of the second gear pair 22.

  At this time, the length of the second gear pair 22 in the rotation axis direction is longer than the rotation axis direction of the first gear pair 21 and shorter than the length of the third gear pair 23 in the rotation axis direction. Therefore, the space (air) at the outer end in the rotation axis direction of the first gear pair 21 is relatively reduced. As a result, the amount of the composition that entrains air can be reduced.

  Next, the sheet transferred to the second storage unit 29 is further pushed out from the center in the direction of the rotation axis to both ends by the meshing of the third gear pair 23 to be formed into a wider sheet. And it is conveyed ahead (3rd storage part 30).

  At this time, the sheet conveyed to the second storage unit 29 is further broadened and uniformly spread by the same action as when passing through the second storage unit 82.

  Thereby, the wide sheet | seat 7 can be obtained.

  The width W0 (length in the direction of the rotational axis) of the seat 7 at the time of passing through the third gear pair 23 is, for example, the relationship of the rotational axis direction length W2 of the third gear pair 23 and the following formula (1), preferably It is set so as to satisfy the relationship of the following formula (2), more preferably the relationship of the following formula (3).

W2-100 (mm) ≦ W0 (mm) ≦ W2 (mm) (1)
W2-50 (mm) ≦ W0 (mm) ≦ W2 (mm) (2)
W2-20 (mm) ≦ W0 (mm) ≦ W2 (mm) (3)
Furthermore, the thickness of the sheet 7 when it passes through the third gear pair 23 is, for example, 1 mm or more, preferably 3 mm or more, more preferably 5 mm or more, and for example, 50 mm or less, preferably 40 mm or less. More preferably, it is 30 mm or less.

  Subsequently, as shown in FIGS. 2 and 3, the sheet 7 reaches the discharge port 46 from the third reservoir 30 through the discharge passage 44, and then discharges (conveys) 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 a desired thickness T1 and a desired width (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.

  Furthermore, the adjusted width of the sheet 7 is, for example, 100 mm or more, preferably 200 mm or more, more preferably 300 mm or more, and, for example, 2000 mm or less, preferably 1500 mm or less, more preferably 1000 mm or less. But there is.

  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.

  The obtained roll-shaped sheet 7 is suitable as 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 such as a magnetic sheet Can be used.

  Further, in the case of containing particles formed from an insulating material and an insulating thermosetting resin, the sheet 7 is, for example, a thermosetting insulating resin sheet (specifically, a thermosetting resin sheet). Can also be suitably used as a sealing sheet.

  The sheet manufacturing apparatus 1 includes a plurality of (three) gear pairs (first gear pair 21, second gear pair 22, third gear pair 23) and a casing 31, and contains a resin component. A gear structure 4 configured to convey the composition while being deformed in the rotation axis direction of the gear pair is provided.

  The first gear pair 21 includes a pair of gears (a first lower gear 33a and a first upper gear 34a), and the second gear pair 22 includes a pair of gears (a second lower gear 33b and a second gear). The third gear pair 23 is composed of a pair of gears (a third lower gear 33c and a third upper gear 34c).

  Each of the three gear pairs is provided with oblique teeth 35 (35a, 35b, 35c) that mesh with each other, and the oblique teeth are arranged adjacent to each other in the rotation axis direction, and the lower right oblique with different tooth traces. Teeth 36 (36a, 36b, 36c) and lower left inclined teeth 37 (37a, 37b, 37c), and the tooth traces of the lower right inclined teeth 36 and the lower left inclined teeth 37 are from the downstream side in the rotational direction of the gear to the upstream side in the rotational direction. As it goes to, it is inclined outward in the direction of the rotation axis.

  Further, in the casing 31, a pair of gears are formed, and a sealed space 74 (a first sealed space 74 a, a second sealed space 74 b, and a third sealed space 74 c) is formed between the inclined teeth 35 and the inner surface of the casing 31. As described above, a gear housing space 73 (a first gear housing space 73a, a second gear housing space 73b, and a third gear housing space 73c) for housing is provided.

  Further, the three gear pairs (first gear pair 21, second gear pair 22, and third gear pair 23) are arranged to face each other in the transport direction.

  Therefore, the composition is spread in the left-right direction three times in succession by the three gear pairs. As a result, the composition can be conveyed while being formed into a wide sheet 7.

  In the gear structure 4, the length of the second gear pair 22 in the rotation axis direction is longer than the length of the first gear pair 21 in the rotation axis direction in the gear pairs arranged adjacent to each other in the transport direction. The length of the third gear pair 23 in the rotation axis direction is longer than the length of the second gear pair 22 in the rotation axis direction.

  Therefore, when passing through the gear pair upstream in the transport direction, the space through which the composition does not pass (that is, the volume of the space (air) generated at both ends in the rotation axis direction of the gear pair) can be reduced.

  As a result, the amount of air entrained by the composition transferred via the gear structure 4 can be reduced, and the generation of pores contained in the resulting sheet 7 can be suppressed.

  In this gear structure 4, the angle formed by the tooth trace of the second lower right inclined tooth 36 b and the tooth trace of the second lower left inclined tooth 37 b in the second gear pair 22 is the first right pair in the first gear pair 21. It is larger than the angle formed by the tooth trace of the lower oblique tooth 36a and the tooth trace of the first left lower oblique tooth 37a. In addition, the angle formed by the tooth trace of the third lower right inclined tooth 36c and the tooth trace of the third lower left inclined tooth 37c in the third gear pair 23 is the tooth trace of the second lower right inclined tooth 36b in the second gear pair 22. And the angle formed by the tooth traces of the second lower left oblique teeth 37b.

  Therefore, the composition that is spread in the rotational axis direction by the first gear pair 21 and formed in a sheet shape is uniformly spread in the rotational axis direction by the gentle-toothed teeth of the second gear pair 22. Further, the teeth of the third gear pair 23 are spread more uniformly in the direction of the axis of rotation by the teeth having a gentle angle.

  As a result, the wider sheet 7 can be transferred while being uniformly formed.

<Modification>
6, 7 and 8, members similar to those of the embodiment of FIG. 1 are given the same reference numerals, and the details thereof are omitted.

  In the embodiment of FIG. 1, the first gear pair 21, the second gear pair 22, and the third gear pair 23 have different left and right lengths (lengths in the rotation axis direction). For example, as shown in FIG. In addition, the left and right lengths of the first gear pair 21, the second gear pair 22, and the third gear pair 23 may be the same. At this time, the casing 31 is formed in a substantially rectangular shape in plan view.

  The embodiment of FIG. 1 is preferable to the embodiment of FIG. 6 from the viewpoint of suppressing pores generated in the obtained sheet 7.

  In the embodiment of FIG. 1, the angle formed by the tooth trace of the third lower right inclined tooth 36 c of the third gear pair 23 and the tooth line of the third lower left inclined tooth 37 c is the second right of the second gear pair 22. The angle between the tooth trace of the lower oblique tooth 36b and the tooth trace of the second left lower oblique tooth 37b is larger, and the tooth trace of the second right lower oblique tooth 36b of the second gear pair 22 and the second left lower oblique tooth 37b. The angle formed by the tooth trace of the first gear pair 21 is larger than the angle formed by the tooth trace of the first lower right oblique tooth 36a and the tooth trace of the first lower left oblique tooth 37a, as shown in FIG. The angle formed by the tooth trace of the third lower right inclined tooth 36c and the tooth trace of the third lower left inclined tooth 37c of the third gear pair 23, and the tooth trace of the second lower right inclined tooth 36b of the second gear pair 22 The angle formed by the tooth trace of the second lower left inclined tooth 37b and the angle formed by the tooth trace of the first lower right inclined tooth 36a of the first gear pair 21 and the tooth trace of the first lower left inclined tooth 37a are all the same. Because Good.

  From the viewpoint of obtaining a more uniform and wide sheet 7, the embodiment of FIG. 1 is preferable to the embodiment of FIG.

  Further, in the embodiment of FIG. 1, the bevel teeth 35 (35a, 35b, 35c) of the three gear pairs (first gear pair 21, second gear pair 22, third gear pair 23) are point contact type curves. For example, as shown in FIG. 8, it may be formed in an involute curve.

  Preferably, as in the embodiment of FIG. 5, the inclined teeth 35 (35a, 35b, 35c) of the three gear pairs are formed in a point contact type curve.

  According to the embodiment of FIG. 5, unlike the embodiment of FIG. 8, in the movement of the meshing portions of the three gear pairs (21, 22, 23), the storage portion 65 where the composition accumulates is formed on the concave surface 42. Can be prevented.

  However, according to the embodiment of FIG. 8, when the resin component contains a thermosetting resin component, a cured product is generated in the storage portion 65 and mixed with the product sheet 7, the quality of the sheet 7. May decrease.

On the other hand, according to the embodiment of FIG. 5, generation of the above-described cured product and mixing into the sheet 7 can be prevented, so that the quality of the sheet 7 can be improved.

  In the embodiment of FIG. 1, the gear structure 4 includes three gear pairs. For example, although not illustrated, the gear structure 4 can include only two gear pairs. Four or more gear pairs may be provided.

  Moreover, in the embodiment of FIG. 2, although the 3rd storage part 30 is formed in the side cross sectional view substantially U shape which the front side curves, although not shown in figure, the 3rd storage part 30 goes to the front side, for example Accordingly, it can be formed in a substantially triangular shape in a side sectional view in which the vertical direction is linearly narrowed.

4 gear structure 21 first gear pair 22 second gear pair 23 third gear pair 31 casing 32 gear 35a oblique tooth 35b oblique tooth 35c oblique tooth 73a first gear accommodating space 73b second gear accommodating space 73c third gear accommodating space 74a First sealed space 74b Second sealed space 74c Third sealed space

Claims (3)

A gear structure comprising a plurality of gear pairs and a casing that accommodates the gear pairs, and configured to convey a composition containing a resin component while being deformed in the rotational axis direction of the gear pairs,
Each of the plurality of gear pairs is composed of a pair of gears,
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 gear structure, wherein the plurality of gear pairs are opposed to each other in a transport direction in which the composition is transported.   In the gear pairs arranged adjacent to each other in the transport direction, the length in the rotation axis direction of the gear pair downstream in the transport direction is longer than the length in the rotation axis direction of the gear pair upstream in the transport direction. The gear structure according to claim 1, wherein: In the gear pairs arranged adjacent to each other in the transport direction, an angle formed by the first oblique tooth trace and the second oblique tooth trace in the downstream gear pair in the transport direction is the transport direction. 3. The gear structure according to claim 1, wherein an angle formed by the first oblique tooth trace and the second oblique tooth trace in the upstream gear pair is larger.

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