JP6664721B1 - Mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mold capable of increasing the discharge amount of gas discharged to the outside of a material flow section. A mold 100 includes a first mold member 110, a second mold member 120, a material distribution unit 130, and a degassing member 140. The material distribution unit 130 is formed between the first mold member 110 and the second mold member 120. The gas vent member 140 discharges the gas remaining inside the material distribution unit 130 to the outside of the material distribution unit 130. The degassing member 140 has a first surface 141 and a side surface 142. The first surface 141 has an inflow portion 1412. The gas can flow into the inflow portion 1412 in the first direction D1. A through hole 1414 is formed in the inflow portion 1412. At least one of the first surface 141 and the side surface 142 has a discharge part 144 capable of discharging the gas flowing in from the inflow part 1412 in the second direction D2. The first direction D1 and the second direction D2 intersect. [Selection diagram] Fig. 1

Description

  The present invention relates to a mold, a degassing member, and a method for manufacturing a degassing member.

  The mold described in Patent Literature 1 includes a gas vent. The gas in the cavity is discharged by the gas vent by the gas vent.

JP 2014-121816 A

  However, in the mold described in Patent Document 1, since the depth of the connection between the cavity and the gas vent is small, the amount of gas discharged to the outside of the cavity may be reduced.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a mold, a degassing member, and a method for manufacturing a degassing member, which can increase the amount of gas discharged to the outside of the material distribution section. Is to do.

  A mold according to the present invention includes a first mold member, a second mold member, a material flowing section, and a gas release member. The material flowing section is formed between the first mold member and the second mold member. In the material distribution section, a material for forming a molded product is distributed. The degassing member discharges gas remaining inside the material flowing part to the outside of the material flowing part. The degassing member has a first surface and a side surface. The first surface faces the material flowing section. The side surface is connected to the first surface. The first surface has an inflow portion. The inflow portion is capable of flowing gas in a first direction. The inflow portion has a through hole. At least one of the first surface and the side surface has a discharge portion capable of discharging the gas flowing from the inflow portion in the second direction. The first direction and the second direction intersect.

  In one embodiment, the degassing member further has a second surface. The second surface is connected to the side surface. The second surface faces the first surface.

  In one embodiment, the through-hole extends in a direction from the first surface to the second surface.

  In one embodiment, the material flowing section is filled with a material of the molded article. The material of the molded article cannot flow into the inflow portion.

  In one embodiment, the material flowing section is filled with a material of the molded article. An angle between a direction in which the material of the molded article filled in the material flowing section flows and a direction in which gas flows from the discharge section is 90 degrees or less.

  In one embodiment, a flow space through which gas flows is formed between the inflow portion and the discharge portion.

  In one embodiment, the mold further includes a discharge path. The discharge path discharges gas to outside of the first mold member or outside of the second mold member. The discharge unit communicates with the discharge path.

  In one embodiment, the discharge path is formed between the first mold member and the second mold member.

  In one embodiment, the material of the molded article is at least one of a resin and a metal.

  The degassing member according to the present invention is attached to a mold. The degassing member has a first surface, a side surface, and a second surface. The side surface is connected to the first surface. The second surface is connected to the side surface. The second surface faces the first surface. The first surface has an inflow portion. The inflow portion is capable of flowing gas in a first direction. The inflow portion has a through hole. At least one of the first surface and the side surface has a discharge portion capable of discharging the gas flowing from the inflow portion in the second direction. The first direction and the second direction intersect.

  In one embodiment, a flow space through which gas flows is formed between the inflow portion and the discharge portion.

  In one embodiment, the through-hole extends in a direction from the first surface to the second surface.

  In the method for manufacturing a degassing member according to the present invention, a gas releasing member is manufactured by irradiating a laser beam to the spread metal powder and solidifying the metal powder. The method of manufacturing the degassing member may include scanning the laser light so that the center of the laser light moves along an end of the annular annular region, and irradiating the laser light inside the annular region. To form non-irradiated regions that are not to be irradiated.

  In one embodiment, the annular region has a first side and a second side. The first side extends in a predetermined direction. The second side extends in an intersecting direction that intersects the predetermined direction. The method for manufacturing the degassing member includes a first scanning step and a second scanning step. In the first scanning step, a center of the laser beam moves along the first side. In the second scanning step, a center of the laser beam moves along the second side. The length of the first side is longer than the spot diameter of the laser beam. The length of the second side is longer than the spot diameter of the laser beam.

  In one embodiment, the annular region is plural. The plurality of annular regions include a first annular region and a second annular region. The first annular region extends in the predetermined direction. The second annular region extends in the cross direction.

  In one embodiment, the annular region is plural. The interval between the adjacent annular regions is longer than the spot diameter of the laser beam.

  ADVANTAGE OF THE INVENTION According to the metal mold | die concerning this invention, the discharge amount of the gas discharged | emitted out of a material distribution part can be increased.

It is a typical sectional view of a metallic mold concerning Embodiment 1 of the present invention. It is a typical exploded sectional view of a metallic mold concerning Embodiment 1 of the present invention. (A) is a schematic perspective view of a degassing member. (B) is a sectional view of the degassing member. (C) is an enlarged sectional view of the inflow section. (A) is a typical perspective view of a metal mold. (B) is a schematic sectional view of a mold. It is a typical sectional view of a metallic mold concerning Embodiment 2 of the present invention. It is a typical sectional view of a metallic mold concerning Embodiment 3 of the present invention. It is a typical sectional view of a metallic mold concerning Embodiment 4 of the present invention. It is a typical sectional view of a metallic mold concerning Embodiment 5 of the present invention. It is a typical sectional view of a metallic mold concerning Embodiment 6 of the present invention. (A)-(e) is a schematic diagram which shows the manufacturing method of the gas release member which concerns on Embodiment 7 of this invention. It is a mimetic diagram showing a manufacturing method of a degassing member concerning Embodiment 7 of the present invention. It is a mimetic diagram showing a manufacturing method of a degassing member concerning Embodiment 7 of the present invention. It is a mimetic diagram showing a manufacturing method of a degassing member concerning Embodiment 7 of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts have the same reference characters allotted, and description thereof will not be repeated.

[Embodiment 1]
The mold 100 according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic sectional view of a mold 100 according to Embodiment 1 of the present invention. FIG. 2 is a schematic exploded sectional view of the mold 100 according to the first embodiment of the present invention. In FIG. 1, the X axis and the Y axis are orthogonal to each other and parallel to the horizontal plane, and the Z axis is parallel to the vertical direction.

  As shown in FIGS. 1 and 2, the mold 100 includes a mold member 110, a mold member 120, a cavity 130, a degassing member 140, a spool 150, a runner 160, and a vent 170. . Note that the mold member 110 corresponds to an example of a “first mold member”. The mold member 120 corresponds to an example of a “second mold member”. The cavity 130 corresponds to an example of a “material distribution section”.

  The mold 100 is a mold for injection molding.

  The mold member 110 is located above the mold member 120. The mold member 110 and the mold member 120 face each other. The mold member 110 is, for example, made of metal. As shown in FIG. 2, a concave portion 112 is provided in the mold member 110. In the present embodiment, the concave portion 112 has a columnar shape. Note that the concave portion 112 may be provided in the mold member 120.

  The mold member 120 is located below the mold member 110. The mold member 120 is made of, for example, metal. As shown in FIG. 2, the mold member 120 is provided with a recess 121, a recess 122, a recess 123, and a recess 124. Note that the recess 121, the recess 122, the recess 123, and the recess 124 may be provided in the mold member 110.

  The cavity 130 is formed between the mold member 110 and the mold member 120. Specifically, the cavity 130 is a space formed by the lower surface of the mold member 110 and the recess 122. The cavity 130 is a space for forming a molded product. The cavity 130 corresponds to the shape of the molded product. In the present embodiment, the molded product has a rectangular shape in a sectional view. The cavity 130 is filled with the material of the molded article. The material of the molded product is, for example, a resin.

  The degassing member 140 discharges gas remaining inside the cavity 130 to the outside of the cavity 130. The degassing member 140 is attached to the recess 112. For example, the degassing member 140 is attached to the recess 112 by being pressed into the recess 112. Alternatively, the gas release member 140 may be attached to the concave portion 112 by a fixing tool. The fixing tool is, for example, a screw. Details of the degassing member 140 will be described later with reference to FIGS.

  The spool 150 is formed on the mold member 110. The spool 150 extends along the Z-axis direction. The spool 150 is a passage into which the resin injected from the injection molding machine first flows.

  The runner 160 is connected to the spool 150. Runner 160 extends along the X-axis direction. Runner 160 is formed between mold member 110 and mold member 120. Specifically, the runner 160 is a space formed by the lower surface of the mold member 110 and the recess 121.

  The vent 170 has a connection path 172 and a discharge path 174. The vent 170 discharges gas remaining in the cavity 130 to the outside of the mold 100. The vent 170 is formed between the mold member 110 and the mold member 120. That is, the connection path 172 and the discharge path 174 are formed between the mold member 110 and the mold member 120. Specifically, the vent 170 is a space formed by the lower surface of the mold member 110 and the concave portions 123 and 124.

  The end of the connection path 172 on the + X direction side is connected to the end of the cavity 130 on the −X direction side. An end of the connection path 172 on the −X direction side is connected to an end of the discharge path 174 on the + X direction side. The depth (length along the Z-axis direction) of the connection path 172 is, for example, 0.01 mm or more and 0.02 mm or less.

  An end on the −X direction side of the discharge path 174 communicates with the outside of the mold 100. The depth of the discharge path 174 is deeper than the depth of the connection path 172. The depth of the discharge path 174 is, for example, 0.2 mm. Therefore, gas flows more easily in the discharge path 174 than in the connection path 172.

  Next, the degassing member 140 will be further described with reference to FIGS. FIG. 3A is a schematic perspective view of the degassing member 140. FIG. 3B is a cross-sectional view of the degassing member 140. FIG. 3C is an enlarged cross-sectional view of the inflow portion 1412.

  As shown in FIG. 3A, the degassing member 140 has a first surface 141, a side surface 142, and a second surface 143.

  The first surface 141 is, for example, parallel to the XY plane. Note that the first surface 141 may be inclined with respect to the XY plane, for example. The first surface 141 forms a lower surface of the gas release member 140. The first surface 141 has a shape in which a part of a circle is cut out in a plan view as viewed from the −Z direction side.

  The side surface 142 connects to the first surface 141. The side surface 142 forms a side surface of the gas release member 140. The side surface 142 is curved. Note that the side surface 142 does not have to be curved. For example, the side surface 142 may be flat.

  The second surface 143 connects to the side surface 142. The second surface 143 faces the first surface 141. The second surface 143 is, for example, parallel to the XY plane. Note that the second surface 143 may be inclined with respect to the XY plane, for example. The second surface 143 forms the upper surface of the degassing member 140. The second surface 143 has a shape in which a part of a circle is cut out in a plan view as viewed from the + Z direction side.

  The first surface 141 has a lower surface 141a and an upper surface 141b. The first surface 141 has an inflow portion 1412. The gas can flow into the inflow portion 1412 in the first direction D1. The first direction D1 is parallel to the Z-axis direction. Therefore, the gas can flow into the inflow section 1412 in the upward direction. The inflow portion 1412 is a porous member. Therefore, a plurality of through holes 1414 are formed in the inflow portion 1412.

  Each of the plurality of through holes 1414 penetrates the inflow portion 1412. Each of the plurality of through holes 1414 penetrates from the lower surface 141a to the upper surface 141b. The through hole 1414 extends in a direction from the first surface 141 to the second surface 143. The inflow section 1412 does not allow the material of the molded article to flow. In this embodiment, the resin cannot flow into the inflow portion 1412. The through hole 1414 may have any shape as long as it penetrates from the lower surface 141a to the upper surface 141b. For example, the holes may penetrate from the lower surface 141a to the upper surface 141b by connecting the spherical holes irregularly. Alternatively, the through hole 1414 may be a slit penetrating from the lower surface 141a to the upper surface 141b.

  The side surface 142 has a discharge portion 144. The discharge part 144 is an opening. The discharge unit 144 can discharge the gas flowing from the inflow unit 1412 in the second direction D2. The second direction D2 is parallel to the Y-axis direction. Therefore, the discharge unit 144 can discharge the gas flowing from the inflow unit 1412 in the lateral direction.

  The first direction D1 is parallel to the Z-axis direction. The second direction D2 is parallel to the Y-axis direction. Therefore, the first direction D1 and the second direction D2 intersect.

  A flow space Sa through which gas flows is formed between the inflow portion 1412 and the discharge portion 144. The circulation space Sa is a space defined by the upper surface of the first surface 141, the inner peripheral surface of the side surface 142, and the lower surface of the second surface 143.

  With reference to FIGS. 4A and 4B, the discharge of the gas remaining in the cavity 130 will be described. FIG. 4A is a schematic perspective view of the mold 100. FIG. 4B is a schematic sectional view of the mold 100. 4A and 4B, the mold member 110 is omitted for simplification of the drawing. In FIG. 4B, hatching indicating a cross section is omitted for easy understanding. In FIG. 4B, the direction D3 indicates the direction in which the material of the molded article filled in the cavity 130 flows. That is, the direction D3 indicates the direction in which the resin flows. In FIG. 4B, a direction D4 indicates a direction in which gas flows from the discharge unit 144. In FIG. 4B, the white arrows indicate the direction in which the gas flows.

  As shown in FIGS. 4A and 4B, the first surface 141 faces the cavity 130. Specifically, the inflow portion 1412 faces the cavity 130. A communication space Sb is formed between the circulation space Sa and the discharge path 174. The communication space Sb connects the distribution space Sa and the discharge path 174. The communication space Sb is a space defined by the degassing member 140 and the mold member 110. Therefore, the discharge unit 144 communicates with the discharge path 174 via the communication space Sb.

  As shown in FIG. 4B, when the cavity 130 is filled with the resin, the resin flows in the direction D3. When the resin flows in the direction D3, the gas stored in the cavity 130 is pushed out in the direction D3. As described with reference to FIG. 3C, a plurality of through holes 1414 of the inflow portion 1412 are formed. Therefore, the extruded gas flows into the first direction D1 (upward) through the plurality of through holes 1414 (see FIG. 3C) of the inflow portion 1412. Then, the gas flowing from the inflow portion 1412 flows through the circulation space Sa, and is discharged from the discharge portion 144 in the second direction D2. The gas discharged from the discharge part 144 flows into the discharge path 174 through the communication space Sb. Then, the gas flowing into the discharge path 174 is discharged to the outside of the mold member 110 and the outside of the mold member 120 through the discharge path 174. As described above, the gas accumulated in the cavity 130 is discharged to the outside of the mold 100 through the inflow portion 1412, the flow space Sa, the communication space Sb, and the discharge path 174.

  The angle formed by the direction D3 in which the material of the molded article filled in the cavity 130 flows and the direction D4 in which the gas flows from the discharge portion 144 is 90 degrees or less. In the present embodiment, the direction D3 and the direction D4 are along the Y-axis direction. Therefore, the angle between the direction D3 and the direction D4 is 0 degrees. That is, the material of the molded article and the gas flow in the same direction.

  As described above with reference to FIGS. 1 to 4, the degassing member 140 has the first surface 141 and the side surface 142. The first surface 141 has an inflow portion 1412 through which gas can flow in the first direction D1. A through hole 1414 is formed in the inflow portion 1412. The side surface 142 has a discharge portion 144. The discharge unit 144 can discharge the gas flowing from the inflow unit 1412 in the second direction D2. Therefore, the amount of gas discharged from the through-hole 1414 to the outside of the material flowing portion (cavity 130) can be increased. Further, the first direction D1 and the second direction D2 intersect. Therefore, the air introduced from the inflow section 1412 can be guided to be discharged from the discharge section 144 to a desired location.

  Further, the material of the molded article cannot flow into the inflow portion 1412. Therefore, it is possible to prevent the material of the molded product from flowing out of the cavity 130 through the inflow portion 1412.

  The angle formed by the direction D3 in which the material of the molded article filled in the cavity 130 flows and the direction D4 in which the gas flows from the discharge portion 144 is 90 degrees or less. Therefore, the gas can be efficiently discharged from the discharge unit 144.

  Further, a flow space Sa through which gas flows is formed between the inflow section 1412 and the discharge section 144. Therefore, a large pressure is not applied to the air flowing from the inflow portion 1412. As a result, gas can be efficiently discharged from the discharge unit 144.

  Further, the mold 100 includes a discharge path 174 for discharging gas to the outside of the mold member 110 or the outside of the mold member 120. The discharge unit 144 communicates with the discharge path 174. Therefore, the air flowing from the inflow portion 1412 can be discharged from the discharge portion 144 and discharged to the outside of the mold member 110 or the outside of the mold member 120 via the discharge path 174.

  The discharge path 174 is formed between the mold member 110 and the mold member 120. Therefore, the discharge path 174 can be provided by cutting at least one of the mold member 110 and the mold member 120. As a result, processing of the mold 100 becomes easy.

[Embodiment 2]
In the mold 100 according to the first embodiment, the discharge unit 144 discharges the gas horizontally, but the discharge unit 144 may discharge the gas downward.

  With reference to FIG. 5, a mold 100 according to Embodiment 2 of the present invention will be described. FIG. 5 is a schematic cross-sectional view of a mold 100 according to Embodiment 2 of the present invention.

  As shown in FIG. 5, the degassing member 140 has a first surface 141, a side surface 142, and a second surface 143. The first surface 141 has a circular shape in plan view as viewed from the −Z direction side. The side surface 142 covers all sides of the degassing member 140. The second surface 143 has a circular shape in plan view from the + Z direction side.

  The first surface 141 has an inflow portion 1412 and a discharge portion 144. The discharge unit 144 discharges the gas flowing from the inflow unit 1412 in the second direction D2. The discharge unit 144 faces the discharge path 174. The discharge unit 144 communicates with the discharge path 174. Therefore, the gas discharged from the discharge unit 144 is discharged to the outside of the mold 100 via the discharge path 174.

  As described with reference to FIG. 5, it has an inflow portion 1412 and a discharge portion 144. Also in the present embodiment, similarly to the first embodiment, the amount of gas discharged from the through hole 1414 to the outside of the cavity 130 can be increased. Further, the air can be guided so that the air flowing from the inflow portion 1412 is discharged from the discharge portion 144 to a desired location.

[Embodiment 3]
In the dies 100 according to the first and second embodiments, the discharge unit 144 discharges the gas to the discharge path 174. However, the discharge unit 144 discharges the gas to the discharge path 174 different from the discharge path 174. May be discharged.

  With reference to FIG. 6, a mold 100 according to Embodiment 3 of the present invention will be described. FIG. 6 is a schematic sectional view of a mold 100 according to Embodiment 3 of the present invention.

  As shown in FIG. 6, the mold 100 further has an additional discharge path 176. The additional discharge path 176 is formed in the mold member 110. The additional discharge path 176 is a hole extending along the X-axis direction. The end on the + X direction side of the additional discharge path 176 communicates with the discharge unit 144. The discharge unit 144 discharges the gas flowing from the inflow unit 1412 in the second direction D2. The second direction D2 is inclined toward the + Z direction with respect to the X axis. Therefore, the gas discharged from the discharge unit 144 is discharged to the outside of the mold 100 via the additional discharge path 176.

  Also in the present embodiment, similarly to the first and second embodiments, the amount of gas discharged from the through hole 1414 to the outside of the cavity 130 can be increased. Further, the air can be guided so that the air flowing from the inflow portion 1412 is discharged from the discharge portion 144 to a desired location.

[Embodiment 4]
In the mold 100 according to the first to third embodiments, the discharge unit 144 is an opening, but the discharge unit 144 is not an opening, and a through hole may be formed in the discharge unit 144.

  With reference to FIG. 7, a mold 100 according to Embodiment 4 of the present invention will be described. FIG. 7 is a schematic sectional view of a mold 100 according to Embodiment 4 of the present invention.

  As shown in FIG. 7, the first surface 141 has an inflow portion 1412 and a discharge portion 144. The inflow portion 1412 is located on the + X direction side of the first surface 141. The discharge unit 144 is located on the −X direction side of the first surface 141. The discharge section 144 is provided with a through-hole similarly to the inflow section 1412. Therefore, the discharge unit 144 can discharge the gas to the discharge path 174 through the through hole.

  Also in the present embodiment, similarly to the first to third embodiments, the amount of gas discharged from the through-hole 1414 to the outside of the cavity 130 can be increased. Further, the air can be guided so that the air flowing from the inflow portion 1412 is discharged from the discharge portion 144 to a desired location.

[Embodiment 5]
In the mold 100 according to the first to fourth embodiments, the degassing member 140 has the second surface 143. However, even if the degassing member 140 does not have the second surface 143. Good.

  A mold 100 according to a fifth embodiment of the present invention will be described with reference to FIG. FIG. 8 is a schematic sectional view of a mold 100 according to Embodiment 5 of the present invention.

  As shown in FIG. 8, the degassing member 140 has a first surface 141 and a side surface 142. The recess 112 has a surface 112a. In the present embodiment, the discharge portion 144 is formed by the surface 112a and the side surface 142. Therefore, the discharge unit 144 can discharge the gas flowing from the inflow unit 1412.

  Also in the present embodiment, similarly to the first to fourth embodiments, the amount of gas discharged from the through-hole 1414 to the outside of the cavity 130 can be increased. Further, the air can be guided so that the air flowing from the inflow portion 1412 is discharged from the discharge portion 144 to a desired location.

[Embodiment 6]
In the mold 100 according to the first to fifth embodiments, the gas release member 140 discharges the gas remaining inside the cavity 130 to the outside of the cavity 130, but the present invention is not limited to this. For example, the degassing member 140 may be provided on the runner 160.

  With reference to FIG. 9, a mold 100 according to Embodiment 6 of the present invention will be described. FIG. 9 is a schematic sectional view of a mold 100 according to Embodiment 6 of the present invention. The description of the parts overlapping with the first to fifth embodiments will be omitted.

  As shown in FIG. 9, the mold 100 includes a mold member 110, a mold member 120, a mold member 180, a cavity 130, a gas release member 140a, a gas release member 140b, a spool 150, A runner 160a, a runner 160b, a vent 170a, a vent 170b, a secondary spool 190a, and a secondary spool 190b are provided. The runner 160a and the runner 160b correspond to an example of a “material distribution section”.

  The mold member 180 is located below the mold member 120. The mold member 120 is made of, for example, metal. The mold member 180 has a recess 182.

  The cavity 130 is formed between the mold member 120 and the mold member 180. Specifically, the cavity 130 is a space formed by the lower surface of the mold member 120 and the concave portion 182.

  The runner 160a and the runner 160b are connected to the spool 150. Runner 160a and runner 160b extend along the X-axis direction. Specifically, the runner 160a extends from the end of the spool 150 in the −X side direction. The runner 160b extends from the end of the spool 150 in the + X direction. Therefore, the resin supplied from the spool 150 branches and flows into the runner 160a and the runner 160b.

  The secondary spool 190a and the secondary spool 190b are formed on the mold member 120. The secondary spool 190a and the secondary spool 190b extend along the Z-axis direction. One end of the secondary spool 190a is connected to the runner 160a. The other end of the secondary spool 190a is connected to the cavity 130. Therefore, the resin flowing to the runner 160a flows to the cavity 130 via the secondary spool 190a. Similarly, one end of the secondary spool 190b is connected to the runner 160b. The other end of the secondary spool 190b is connected to the cavity 130. Therefore, the resin flowing to the runner 160b flows to the cavity 130 via the secondary spool 190b.

  In the present embodiment, the runner 160a is provided with the degassing member 140a. Therefore, the gas remaining in the runner 160a can be efficiently exhausted. Similarly, a degassing member 140b is provided on the runner 160b. Therefore, the gas remaining in the runner 160b can be efficiently exhausted.

  Note that the cavity 130 may also be provided with a degassing member 140. In this case, the mold member 120 corresponds to an example of a “first mold member”, and the mold member 180 corresponds to an example of a “second mold member”.

[Embodiment 7]
With reference to FIGS. 10 (a) to 10 (e), a method for manufacturing the degassing member 140 according to Embodiment 7 of the present invention will be described. FIGS. 10A to 10E are schematic diagrams illustrating a method for manufacturing the gas venting member 140 according to the seventh embodiment of the present invention.

  The degassing member 140 is manufactured by, for example, the metal 3D printer 200. The metal 3D printer 200 includes a base 210 and a recoater 220.

  First, as shown in FIG. 10A, the recoater 220 spreads the metal powder M on the base 210, spreads the metal powder M on the base 210, and spreads the metal powder M on the base 210.

  Next, as shown in FIG. 10B, the metal powder M is irradiated with laser light L to solidify (sinter) the metal powder M. The laser light L is, for example, a Yb laser. In FIG. 10B, an irradiation area Ra indicates an area irradiated with the laser light L. The non-irradiation area Rb indicates an area where the laser light L is not irradiated. In FIG. 10B, a portion where the metal powder M is solidified is indicated by hatching. As shown in FIG. 10B, the non-irradiation regions Rb are provided at predetermined intervals. Therefore, the metal powder M is solidified at predetermined intervals.

  Next, as shown in FIG. 10C, the recoater 220 again spreads the metal powder M on the base 210, flattens the metal powder M, and stacks the metal powder M on the base 210.

  Next, as shown in FIG. 10D, the metal powder M is irradiated with a laser beam L to solidify (sinter) the metal powder M. In FIG. 10D, the irradiation area Ra is the same position as the irradiation area Ra shown in FIG. 10B. Therefore, the place where the laser light L is irradiated is the same place as the place where the laser light L is irradiated in FIG.

  By repeating the step shown in FIG. 10C and the step shown in FIG. 10D, a through hole 1414 can be formed as shown in FIG.

  With reference to FIG. 11 to FIG. 13, a method of manufacturing the degassing member 140 according to Embodiment 5 of the present invention will be further described. 11 to 13 are schematic diagrams illustrating a method for manufacturing the gas release member 140 according to Embodiment 7 of the present invention.

  First, the trajectory of the laser light L will be described with reference to FIG. In FIG. 11, trajectory A, trajectory B, trajectory C, trajectory D, trajectory E, and trajectory F indicate the trajectories of the laser light.

  In FIG. 11, the ring-shaped region RX1, the ring-shaped region RX2, and the ring-shaped region RX3 are indicated by obliquely upward hatching. Further, the ring-shaped region RY1, the ring-shaped region RY2, and the ring-shaped region RY3 are indicated by diagonally downward right hatching. The ring region RX1, the ring region RX2, and the ring region RX3 correspond to an example of a “first ring region”. The annular region RY1, the annular region RY2, and the annular region RY3 correspond to an example of a “second annular region”. In this specification, the ring region RX1, the ring region RX2, the ring region RX3, the ring region RY1, the ring region RY2, and the ring region RY3 may be collectively referred to as a ring region R.

  As shown in FIG. 11, the annular region RX1 has a rectangular shape. The length of the annular region RX1 along the Y-axis direction is longer than the length of the annular region RX1 along the X-axis direction. Therefore, the annular region RX1 extends in the Y-axis direction. That is, the annular region RX1 is a vertically long region. Specifically, the annular region RX1 is a region surrounded by the side S1, the side S2, the side S3, and the side S4. The annular region RX1 has vertices A1, A2, A3, A4, S1, S2, S3, and S4. Side S1 is a line connecting vertex A1 and vertex A2. The side S2 is a line connecting the vertex A2 and the vertex A3. The side S3 is a line connecting the vertex A3 and the vertex A4. The side S4 is a line connecting the vertex A4 and the vertex A1. Side S1 and side S3 extend along the Y-axis direction. The sides S2 and S4 extend along the X axis. Note that the side S1 and the side S3 correspond to an example of a “first side”. The side S2 and the side S4 correspond to an example of a “second side”. The Y-axis direction corresponds to an example of a “predetermined direction”. The X-axis direction corresponds to an example of a “cross direction”. The predetermined direction and the intersecting direction intersect.

  In the present embodiment, the angle between the side S1 and the side S2 is 90 degrees. The angle between the side S2 and the side S3 is 90 degrees. The angle between the side S3 and the side S4 is 90 degrees. The angle between the side S4 and the side S1 is 90 degrees.

  In the method for manufacturing the degassing member 140 according to the present embodiment, the laser beam L is scanned such that the center of the laser beam L moves along the end of the annular region RX1. The method for manufacturing the degassing member 140 according to the present embodiment includes a first scanning step and a second scanning step. In the first scanning step, the center of the laser light moves along the first side. In the second scanning step, the center of the laser beam moves along the second side. Specifically, the laser beam L is scanned so that the center of the laser beam L moves along the locus A. More specifically, with the vertex A1 as a starting point, the center of the laser beam L is moved along the side S1, and the laser beam L is scanned to the vertex A2 (first scanning step). Next, the center of the laser beam L is moved along the side S2, and the laser beam L is scanned to the vertex A3 (second scanning step). Next, the center of the laser light L is moved along the side S3, and the laser light L is scanned to the vertex A4. Next, the center of the laser beam L is moved along the side S4, and the laser beam L is scanned to the vertex A1. As described above, in the method of manufacturing the degassing member 140 according to the present embodiment, the center of the laser beam L is moved along the end of the annular region RX1 so as to make one round clockwise. Note that the center of the laser beam L may be moved so as to make one round in the counterclockwise direction along the end of the annular region RX1.

  Since the annular region RX2 and the annular region RX3 have the same configuration as the annular region RX1, the description is omitted.

  The length d1 along the X-axis direction of the annular region RX1, the length d1 along the X-axis direction of the annular region RX2, and the length d1 along the X-axis direction of the annular region RX3 are, for example, 0.21 mm. It is.

  The distance d2 between the adjacent annular regions R is, for example, 0.21 mm. Specifically, the distance d2 between the annular region RX1 and the annular region RX2 is, for example, 0.21 mm. The distance d2 between the annular area RX2 and the annular area RX3 is, for example, 0.21 mm.

  The annular region RY1, the annular region RY2, and the annular region RY3 are the same as the annular region RX1, the annular region RX2, and the annular region RX3 except that the length along the X-axis direction is longer than the length along the Y-axis direction. Since it has a similar configuration, the description of the overlapping portion will be omitted.

  The length of the annular region RY1 along the X-axis direction is longer than the length of the annular region RY1 along the Y-axis direction. Therefore, the annular region RY1 extends in the X-axis direction. That is, the annular region RY1 is a horizontally long region.

  The length d3 of the annular region RY1 along the X-axis direction, the length d3 of the annular region RY2 along the Y-axis direction, and the length d3 of the annular region RY3 along the Y-axis direction are, for example, 0.21 mm. It is.

  The interval d4 between the adjacent annular regions R is, for example, 0.21 mm. Specifically, a distance d4 between the annular region RY1 and the annular region RY2 is, for example, 0.21 mm. The distance d4 between the annular area RY2 and the annular area RY3 is, for example, 0.21 mm.

  In the method of manufacturing the degassing member 140 according to the present embodiment, the laser beam L is scanned so that the center of the laser beam L moves in the order of the trajectory A, the trajectory B, the trajectory C, the trajectory D, the trajectory E, and the trajectory F. Then, a laser beam L is applied to the metal powder M to solidify the metal powder M.

  Next, the irradiation of the laser light L will be described with reference to FIGS. 12 and 13, a spot LS indicates a spot of the laser beam L. The spot diameter d5 is, for example, 0.2 mm. The spot diameter d5 indicates the diameter of the spot LS.

  As shown in FIG. 12, in the method of manufacturing the degassing member 140 according to the present embodiment, the laser beam L is scanned so that the center of the laser beam L moves along the end of the annular region RX1. Specifically, the laser beam L is scanned so that the center of the laser beam L moves along the locus A. At this time, the center of the laser light L moves while maintaining a state where a part of the spot LS of the laser light L overlaps a part of the adjacent spot LS.

  First, the laser beam L is scanned to the vertex A2 by moving the center of the laser beam L along the side S1 with the vertex A1 as a starting point. As a result, the metal powder M irradiated with the laser light L is solidified. Specifically, the metal powder M is solidified with the width of the spot diameter d5 around the side S1.

  Next, the center of the laser beam L is moved along the side S2, and the laser beam L is scanned to the vertex A3. As a result, the metal powder M irradiated with the laser light L is solidified. Specifically, the metal powder M is solidified with the width of the spot diameter d5 around the side S2.

  Next, the center of the laser light L is moved along the side S3, and the laser light L is scanned to the vertex A4. As a result, the metal powder M irradiated with the laser light L is solidified. Specifically, the metal powder M is solidified with the width of the spot diameter d5 around the side S3.

  Next, the center of the laser beam L is moved along the side S4, and the laser beam L is scanned to the vertex A1. As a result, the metal powder M irradiated with the laser light L is solidified. Specifically, the metal powder M is solidified with the width of the spot diameter d5 around the side S4.

  Thus, the metal powder M located in the irradiation area Ra is solidified. The irradiation area Ra is an area irradiated with the laser light L. The irradiation area Ra is an area through which the spot LS passes when the center of the laser light L is moved along the locus A. In other words, the irradiation area Ra is an area through which the spot LS passes when the center of the laser light L is moved along the end of the annular area RX1.

  The length d1 of the side S2 and the length d1 of the side S4 are longer than the spot diameter d5. Specifically, the length d1 of the side S2 and the length d1 of the side S4 are 0.21 mm. The spot diameter d5 is 0.2 mm. Therefore, the length d1 of the side S2 and the length d1 of the side S4 are 0.01 mm longer than the spot diameter d5. Therefore, a non-irradiation region Rb having a width of 0.01 mm is formed inside the annular region RX1. The non-irradiation region Rb is a region where the laser light L is not irradiated.

  The length d8 of the side S1 and the length d8 of the side S3 are sufficiently longer than the spot diameter d5. Therefore, the non-irradiation region Rb is formed inside the annular region RX1.

  The distance d2 between the adjacent annular regions R is longer than the spot diameter d5. Specifically, the interval d2 is 0.21 mm. The spot diameter d5 is 0.2 mm. Therefore, a non-irradiation area having a width of 0.01 mm is formed between adjacent annular areas R.

  After the irradiation of the laser beam L along the trajectory A is completed, the irradiation of the laser beam L is performed along the trajectory B, similarly to the trajectory A. As a result, the metal powder M is solidified along the trajectory B with the width of the spot diameter d5 around the trajectory B. Further, a non-irradiation region Rb is formed inside the annular region RX2. Thereafter, similarly, irradiation of the laser light L is performed along the trajectory C. As a result, the metal powder M is solidified along the locus C with a width of the spot diameter d5 around the locus C. Further, a non-irradiation region Rb is formed inside the annular region RX3.

  Next, as shown in FIG. 13, similarly to the locus A, irradiation of the laser light L is performed along the locus D. As a result, a non-irradiated region Rb is formed inside the annular region RY1. Thereafter, similarly, irradiation of the laser light L is performed along the trajectory E. As a result, a non-irradiation region Rb is formed inside the annular region RY2. Thereafter, similarly, irradiation of the laser light L is performed along the trajectory F. As a result, a non-irradiation region Rb is formed inside the annular region RY3.

  The length d3 of the side S1 and the length d3 of the side S3 are longer than the spot diameter d5. Specifically, the length of the side S1 and the length of the side S3 are 0.21 mm. The spot diameter d5 is 0.2 mm. Therefore, the length d3 of the side S1 and the length d3 of the side S3 are 0.01 mm longer than the spot diameter d5. Therefore, a non-irradiation area Rb having a width of 0.01 mm is formed inside the annular area RY1.

  The length d8 of the side S2 and the length d8 of the side S4 are sufficiently longer than the spot diameter d5. Therefore, the non-irradiation region Rb is formed inside the annular region RY1.

  The distance d4 between the adjacent annular regions R is longer than the spot diameter d5. Specifically, the interval d4 is 0.21 mm. The spot diameter d5 is 0.2 mm. Therefore, a non-irradiation area having a width of 0.01 mm is formed between adjacent annular areas R.

  As described with reference to FIGS. 12 and 13, the irradiation of the laser light L is performed along the trajectory A, the trajectory B, the trajectory C, the trajectory D, the trajectory E, and the trajectory F, so that the irradiation area Ra The located metal powder M is solidified. In FIG. 13, a region where the non-irradiation region Rb overlaps is indicated by hatching. The area indicated by hatching is surrounded by the irradiation area Ra. Therefore, a through hole 1414 is formed in a region indicated by hatching. In the present embodiment, the diameter of the through hole 1414 is 0.01 mm. Thus, according to the present embodiment, it is possible to easily form the through hole 1414 sufficiently smaller than the spot diameter d5.

  As described above with reference to FIGS. 10 to 13, according to the method of manufacturing the degassing member 140 according to this embodiment, the center of the laser beam L moves along the end of the annular region R. The non-irradiated area Rb not irradiated with the laser light is formed inside the annular area R by scanning the laser light L in such a manner. Therefore, the through-hole 1414 can be easily formed in the non-irradiation region Rb. As a result, a porous structure can be easily formed.

  Further, the method for manufacturing the degassing member 140 according to the present embodiment includes a first scanning step and a second scanning step. In the first scanning step, the center of the laser beam L moves along the first side (side S1 and side S3). In the second scanning step, the center of the laser beam moves along the second side (side S2 and side S4). The length of the first side (side S1 and side S3) is longer than the spot diameter d5 of the laser beam L. The length of the second side (side S2 and side S4) is longer than the spot diameter d5 of the laser beam L. Therefore, the non-irradiation region Rb is formed inside the annular region R. As a result, the through-hole 1414 can be easily formed in the non-irradiation region Rb.

  The plurality of annular regions include a first annular region (annular region RX1, annular region RX2, and annular region RX3), and a second annular region (annular region RY1, annular region RY2, and annular region RY3). The first annular region extends in a predetermined direction (Y-axis direction). The second annular region extends in the cross direction (X-axis direction). Therefore, the first annular region and the second annular region intersect. As a result, the non-irradiation region Rb of the first annular region intersects with the non-irradiation region Rb of the second annular region. As a result, the through-hole 1414 can be easily formed in a region where the non-irradiation region Rb of the first annular region and the non-irradiation region Rb of the second annular region overlap.

  Further, the distance between the adjacent annular regions R (the distance d2 and the distance d4) is longer than the spot diameter d5 of the laser light L. Therefore, the non-irradiation region Rb can be formed between the adjacent annular regions R. Therefore, the through holes 1414 can be easily formed between the adjacent annular regions R. As a result, the number of formed through holes 1414 can be increased.

  The embodiment of the invention has been described with reference to the drawings (FIGS. 1 to 13). However, the present invention is not limited to the above embodiment, and can be implemented in various modes without departing from the gist thereof (for example, the following (1) to (5)). In the drawings, each component is schematically shown mainly for easy understanding, and the thickness, length, number, etc. of each component shown are different from the actual ones for the convenience of drawing. . In addition, the materials, shapes, dimensions, and the like of the respective constituent elements shown in the above-described embodiments are merely examples, and are not particularly limited, and various changes can be made without substantially departing from the effects of the present invention. is there.

  (1) In the mold 100 according to Embodiments 1 to 6, the vent 170 has the connection path 172, but the present invention is not limited to this. For example, the vent 170 may have only the discharge path 174.

  (2) In the mold 100 according to Embodiments 1 to 46, the material of the molded product filled in the cavity 130 is a resin, but the present invention is not limited to this. For example, the material of the molded article filled in the cavity 130 may be metal.

  (3) In the mold 100 according to the first to sixth embodiments, the mold member 110 and the mold member 120 are made of metal, but the present invention is not limited to this. For example, the mold member 110 and the mold member 120 may be made of resin.

  (4) In the mold 100 according to the first to sixth embodiments, the degassing member 140 has a cylindrical shape, but the present invention is not limited to this. For example, the degassing member 140 may have a rectangular parallelepiped shape. In this case, the concave portion 112 to which the degassing member 140 is attached has a rectangular parallelepiped shape. By forming the degassing member 140 in a rectangular parallelepiped shape, rotation of the degassing member 140 when the degassing member 140 is attached to the recess 112 can be suppressed.

  (5) In the method for manufacturing the degassing member 140 according to the seventh embodiment, the annular region R is rectangular, but the present invention is not limited to this. For example, it may be trapezoidal or polygonal.

100 Mold 110 Mold member (first mold member)
120 Mold member (second mold member)
130 cavity (material distribution section)
140 Degassing member 141 First surface 142 Side surface 143 Second surface 144 Discharge unit 160, 160a, 160b Runner (material distribution unit)
174 Discharge path 180 Mold member 1412 Inflow portion 1414 Through hole D1 First direction D2 Second direction L Laser beam M Metal powder Sa Flow space R Annular regions RX1, RX2, RX3 Annular region (first annular region)
RY1, RY2, RY3 annular region (second annular region)
Rb non-irradiated areas S1, S3 sides (first side)
S2, S4 side (second side)

Claims (6)

A first mold member;
A second mold member;
A material distribution section formed between the first mold member and the second mold member, through which a material for forming a molded product flows;
A degassing member that discharges gas remaining inside the material flowing part to the outside of the material flowing part,
The degassing member,
A first surface facing the material distribution section;
A side surface connected to the first surface,
The first surface has an inflow portion through which gas can flow,
A through hole is formed in the inflow portion,
At least one of the first surface and the side surface has a discharge portion capable of discharging gas flowing from the inflow portion,
A discharge path for discharging gas to the outside of the first mold member or the outside of the second mold member;
The discharge unit communicates with the discharge path,
The mold, wherein the discharge path is formed between the first mold member and the second mold member. The degassing member further has a second surface,
The mold according to claim 1, wherein the second surface is connected to the side surface and faces the first surface.   The mold according to claim 2, wherein the through-hole extends in a direction from the first surface to the second surface. The material distribution section is filled with the material of the molded article,
The mold according to any one of claims 1 to 3, wherein the inflow portion does not allow a material of the molded article to flow therein. The material distribution section is filled with the material of the molded article,
The angle between the direction in which the material of the molded article filled in the material flowing section flows and the direction in which gas flows from the discharge section is 90 degrees or less. Mold.   The mold according to any one of claims 1 to 5, wherein a flow space through which gas flows is formed between the inflow portion and the discharge portion.

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