Method for manufacturing cleaning brush for molding die and method for manufacturing resin molding device

Abstract

A method for manufacturing a cleaning brush (30) for a molding die for cleaning a molding die included in a resin molding apparatus includes: a step of preparing a channel brush (36) formed by fixing a bristle material (33) to a channel member (35); a step for spirally winding and fixing the channel brush around the shaft member (38); and a step for cutting the tip of the bristle material (33), in which a short bristle region (31R) including the bristle material (33) having a first length and a long bristle region (32R) including the bristle material (33) having a second length that is longer than the first length are formed in the channel brush on the shaft member (38) by cutting the tip of the bristle material (33).

Description

Technical Field

[0001] The present invention relates to a method for manufacturing a cleaning brush for a molding die and a method for manufacturing a resin molding device. Background Art

[0002] In the resin molding device, a substrate connected with electronic components such as an integrated circuit (IC), a transistor, and a capacitor is prepared as a molding object. The electronic components on the substrate are sealed with resin by resin molding using transfer molding, compression molding (compression molding), and injection molding (injection molding).

[0003] In the molding die of the resin molding device, there may be residual resin (also called resin flakes or resin residues) generated by the resin molding. As disclosed in Japanese Utility Model Unexamined Patent Publication No. 02-137217 (Patent Document 1), the molding die is cleaned with a molding die cleaning brush.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Utility Model Publication No. 02-137217 Summary of the invention

[0007] Problems to be solved by the invention

[0008] In the cleaning brush for forming molds disclosed in Japanese Utility Model Publication No. 02-137217 (Patent Document 1), the front end shape of the bristle portion of the brush is specified to match the shape of the forming mold. Patent Document 1 describes that, with this brush, the bristle portion can not only reach the surface portion of the forming surface to clean the surface portion, but also reach the bottom of the mold cavity to clean the bottom.

[0009] In the manufacturing method of the brush as described above, a plurality of bristle material bundles are fixed to the outer periphery of the shaft member, thereby forming a plurality of bristle implantation portions on the outer periphery of the shaft member. Space is required around the portions where the bristle material bundles are implanted to perform the operation of fixing the bristle material bundles to the shaft member. Since it is necessary to ensure space, it is difficult to reduce the intervals between adjacent bristle material bundles, and thus it is difficult to form bristle materials with high density on the peripheral surface of the shaft member.

[0010] The purpose of this specification is to disclose a method for manufacturing a cleaning brush for a molding die and a method for manufacturing a resin molding device, which can form a bristle material having a higher density around a shaft member than in the prior art.

[0011] Technical means of solving problems

[0012] In one aspect of the present disclosure, a method for manufacturing a cleaning brush for a molding die for cleaning a molding die included in a resin molding device includes the following steps: a step of preparing a channel brush formed by fixing a bristle material to a channel member; a step of spirally winding and fixing the channel brush around an axially extending shaft member; and a step of cutting off a portion or all of the front ends of the bristle material while the channel brush is wound around the shaft member, wherein by cutting off a portion or all of the front ends of the bristle material, the channel brush on the shaft member forms a short-hair region including the bristle material having a first length, and a long-hair region including the bristle material having a second length longer than the first length.

[0013] In another aspect of the present disclosure, a method for manufacturing a resin molding device is a method for manufacturing a resin molding device including a molding die, the method for manufacturing a resin molding device including the following steps: a step of making a cleaning brush for a molding die by the method for manufacturing a cleaning brush for a molding die of one aspect of the present disclosure, the short-hair region of the cleaning brush for the molding die being configured in a manner capable of contacting a convex portion of the molding die, and the long-hair region of the cleaning brush for the molding die being configured in a manner capable of contacting a concave portion of the molding die.

[0014] Effects of the Invention

[0015] According to the method for manufacturing a cleaning brush for a molding die and the method for manufacturing a resin molding device having the above-described structure, a bristle material having a higher density can be formed around the shaft member compared to the conventional technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] [ Figure 1 ] is a functional block diagram of an example of a resin molding device.

[0017] [ Figure 2 ] is a plan view schematically showing the main internal structure of a resin molding device.

[0018] [ Figure 3 ] is along Figure 2 The arrow on line III-III is a cross-sectional view of the key parts.

[0019] [ Figure 4 ] is a diagram schematically showing the appearance structure of a cleaning brush for a molding die included in a resin molding device.

[0020] [ Figure 5 ] is a cross-sectional view showing a condition in which a long-haired area of ​​a cleaning brush for a molding die included in a resin molding apparatus contacts the bottom surface of a lower mold.

[0021] [ Figure 6] is a cross-sectional view showing the contact between the short-hair region and the long-hair region of a cleaning brush for a molding die included in a resin molding apparatus and the surface of a lower mold.

[0022] [ Figure 7 ] is a three-dimensional diagram showing the preparation process of the manufacturing method of the cleaning brush for the forming mold.

[0023] [ Figure 8 ] is a three-dimensional diagram showing the fixing process of the manufacturing method of the cleaning brush for the forming mold.

[0024] [ Fig. 9 ] is a three-dimensional diagram showing the cutting process of the manufacturing method of the cleaning brush for the forming mold.

[0025] [ Fig.10 ] is a plan view showing a condition in which the lower mold is cleaned by a cleaning brush of the molding mold of the lower mold in the first variant of the implementation method.

[0026] [ Fig.11 ] is a plan view of a cleaning brush for a molding die used for an upper die in a first variant example of an implementation method.

[0027] [ Fig.12 ] is a plan view showing the structure of the lower mold in the second variant of the implementation method. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present disclosure. In the embodiments described below, when referring to the number, amount, etc., the scope of the present disclosure is not necessarily limited to the number, amount, etc., unless otherwise specified. Each structural component is not necessarily essential to the present disclosure, unless otherwise specified. Sometimes, the same reference number is marked on the same parts and equivalent parts, and repeated description is not repeated.

[0029] (Resin molding device 100)

[0030] Figure 1 The functional block diagram of an example of the resin molding device 100 of the embodiment is shown. The resin molding device 100 includes a control unit 2, a supply module 1, a resin molding module 4, and a molded product unloading module 5. The control unit 2 is configured to control the supply module 1, the resin molding module 4, and the molded product unloading module 5.

[0031] The supply module 1 is configured to supply the molding object and the resin material before molding to the resin molding module 4. The resin molding module 4 is configured to manufacture a resin molded product by clamping the molding mold and performing resin molding on the molding object. The molded product unloading module 5 is configured to remove the excess resin portion of the molding object after molding and then unload the resin molded product. The supply module 1, the resin molding module 4, and the molded product unloading module 5 are mutually detachable and replaceable. In addition, the number of the resin molding modules 4 can also be increased or decreased.

[0032] Figure 2 It is a plan view schematically showing the main internal structure of the resin molding apparatus 100. Figure 3 It is along Figure 2 The arrow of line III-III is a cross-sectional view of the main part. Figure 2 As shown, the resin molding apparatus 100 includes a supply unit 10 , a cleaning brush 30 for a molding die, a molding unit 40 , a carrying-out mechanism 50 , and a discharge unit 60 .

[0033] Reference Figure 1 to Figure 3 The supply module 1 mainly includes a supply unit 10. A molding object before molding is arranged in the supply unit 10. The molding object is usually a substrate to which electronic components such as semiconductor chips are connected. For example, a lead frame, a printed wiring board, a metal substrate, a resin substrate, a semiconductor substrate, and a ceramic substrate can be used as the substrate.

[0034] The resin molding device 100 further includes a conveying mechanism (not shown) configured to be movable between the supply module 1 and the resin molding module 4. The retracted position of the conveying mechanism is located at the supply module 1. The substrate is conveyed from the supply unit 10 to the molding unit 40 together with the resin material by the conveying mechanism. The resin material may be, for example, an ingot-shaped resin formed by compacting a powdered thermosetting resin.

[0035] The resin molding module 4 mainly includes a molding unit 40. The molding unit 40 includes a lower mold 41 and an upper mold 42 ( Figure 3 ), and a clamping mechanism (not shown) for clamping the molding mold. In the molding section 40, the lower mold 41 and the upper mold 42 are clamped by the clamping mechanism, thereby performing resin molding on the molding object.

[0036] The molded product unloading module 5 mainly includes a discharge section 60. The molded object is unloaded from the molding section 40 to the discharge section 60 by the unloading mechanism 50, and is degated in the discharge section 60 and finally stored in an out magazine.

[0037] The unloading mechanism 50 is configured to be movable between the resin molding module 4 and the molded product unloading module 5. The unloading mechanism 50 has a molding mold cleaning brush 30. Here, the unloading mechanism 50 includes a first body portion 51 and a second body portion 52. The molded object after molding is discharged by moving the first body portion 51 in the direction of arrow A1 and the second body portion 52 in the direction of arrow A2. When the second body portion 52 moves in the direction of arrow A2, the molding mold is cleaned.

[0038] Here, a molding die cleaning brush 30 is provided at a portion of the second main body 52 of the unloading mechanism 50 near the molding unit 40. The molding object is molded with resin using the lower mold 41 and the upper mold 42 as the molding mold, and the molding die cleaning brush 30 is used to remove resin from the molding die to clean it.

[0039] In order to clean the molding die of the resin molding device 100, one or more molding die cleaning brushes 30 (described in detail below) are provided in the unloading mechanism 50 of the resin molding device 100. Figure 3 When two molds are provided as shown, one mold uses a cleaning brush 30 to remove resin from the lower mold 41, and the other mold uses a cleaning brush 30 to remove resin from the upper mold 42 ( Figure 3 ) removes the resin, thereby cleaning the forming mold of the forming part 40.

[0040] (Cleaning brush 30 for forming mold and method for manufacturing the same)

[0041] Figure 4 1 is a diagram schematically showing the external appearance structure of the cleaning brush 30 for a molding die. Figure 5 This is a cross-sectional view showing a state where the long-haired region 32R of the molding die cleaning brush 30 is in contact with the bottom surface 41 b of the cavity (recessed portion) of the lower die 41 . Figure 6 It is a cross-sectional view showing a state where the short-hair region 31R and the long-hair region 32R of the molding die cleaning brush 30 are in contact with the surface of the lower mold 41 (the surface 41 a and the bottom surface 41 b of the recessed portion).

[0042] like Figure 3 to Figure 6 As shown in FIG. 1 , the cleaning brush 30 for forming molds has a so-called roller brush form. The cleaning brush 30 for forming molds includes a central axis 38c ( Figure 3 ) as the center of rotation of the shaft member 38, the channel member 35 fixed to the shaft member 38 (see also Figure 3 , Figure 7 ), and the blank material 33 fixed to the channel member 35. The shaft member 38 has a cylindrical shape extending along the axis 38c from one end portion thereof toward the other end portion.

[0043] As a method for manufacturing the cleaning brush 30 for a molding die, the bristle material 33 is fixed to the channel member 35 ( Figure 7 ) to form a channel brush 36 ( Figure 7 After preparing such a channel brush 36, the channel brush 36 is spirally wound and fixed on the shaft member 38 ( Figure 3 , Figure 4 , Figure 8 ) around (refer to Figure 8 At this time, the end portion 35T ( Figure 8 ) is fixed on the surface of the shaft member 38. Then, in a state where the channel brush 36 is wound around the shaft member 38, a part or all of the front ends of the bristle material 33 are cut off by a grinder or the like (see Fig. 9 ).

[0044] Thus, the channel brush 36 on the shaft member 38 is formed to include a first length L1 ( Figure 5 ) of the short-hair region 31R of the hair material 33 (31), and a second length L2 ( Figure 5 ) of the long-hair area 32R of the hair material 33 (32).

[0045] like Figure 3 , Figure 5 , Figure 6 As shown, in the cleaning brush 30 for forming molds of this embodiment, a plurality of short-hair regions 31R and a plurality of long-hair regions 32R are alternately arranged in the circumferential direction centered on the shaft member 38. Here, two short-hair regions 31R and two long-hair regions 32R are alternately arranged around the shaft member 38. Figure 4 As shown, in the cleaning brush 30 for the molding die, when observing the cross-sectional shape at a certain position, a plurality of short-hair regions 31R and a plurality of long-hair regions 32R are alternately arranged in the axial direction (see also FIG. Fig. 9 ).

[0046] The hair material 33 (31) included in the short-hair region 31R extends from the channel member 35 to the radially outer side along the radial direction of the shaft member 38 as it moves from the root side toward the front end side thereof. The hair material 33 (32) included in the long-hair region 32R also extends from the channel member 35 to the radially outer side along the radial direction of the shaft member 38 as it moves from the root side toward the front end side thereof.

[0047] The angular range of the short-hair region 31R with the shaft member 38 as the center can be set to, for example, 60° to 90°, and the angular range of the long-hair region 32R with the shaft member 38 as the center can also be set to, for example, 60° to 90°.

[0048] Regarding the short-hair area 31R, the so-called circumferential angle range mentioned here is to determine the root part of the hair material 33 (31) located at the front side in the rotation direction in the short-hair area 31R, and the root part of the hair material 33 (31) located at the rear side in the rotation direction in the short-hair area 31R, and the angle formed by the two root parts and the axis 38c in a two-dimensional plane perpendicular to the axis 38c and including the two root parts.

[0049] Regarding the long-haired area 32R, the so-called angular range in the circumferential direction mentioned here is to determine the root portion of the hair material 33 (32) located at the front side in the rotation direction in the long-haired area 32R, and the root portion of the hair material 33 (32) located at the rear side in the rotation direction in the long-haired area 32R, and the angle formed by the two root portions and the axis 38c in a two-dimensional plane perpendicular to the axis 38c and including the two root portions.

[0050] For example, three short-hair regions 31R provided at an angle range of 60° and three long-hair regions 32R provided at an angle range of 60° may be alternately arranged around the shaft member 38. Two short-hair regions 31R and two long-hair regions 32R may be provided at an angle range of 90°, respectively, or these may be provided at different angle ranges such as 50° and 70° and alternately arranged.

[0051] like Figure 5 As shown, the bristle material 33 (31) constituting the short-hair region 31R extends from the channel member 35 by a length L1 in the radial direction of the shaft member 38. The bristle material 33 (32) constituting the long-hair region 32R extends from the channel member 35 by a length L2 in the radial direction of the shaft member 38.

[0052] The distance from the axis 38c of the shaft member 38 to the front end of the bristle 33 (32) is, for example, 20 to 30 mm. In this embodiment, the length L2 of the bristle 33 (32) constituting the long-hair region 32R is longer than the length L1 of the bristle 33 (31) constituting the short-hair region 31R.

[0053] The difference between the length L2 and the length L1 can be set to the same value as the maximum depth of the cavity formed in the lower mold 41, that is, the depth dimension L3 from the surface 41a of the lower mold 41 (the surface 41a of the convex part in the lower mold 41 where the cavity is not formed) to the bottom surface 41b of the concave part of the cavity. The difference between the length L2 and the length L1 can also be larger than the depth dimension L3. In other words, the relationship (L3+L1)≦L2 can also be established. Although it also depends on the specifications, the difference between the length L2 and the length L1 is, for example, greater than 1.0 mm and less than 2.0 mm, or greater than 1.0 mm and less than 3.0 mm. The depth dimension L3 is less than 1.0 mm, or less than 3.0 mm. The lengths L1 and L2 are optimized according to the depth dimension L3.

[0054] like Figures 4 to 6 As shown, when the cleaning brush 30 for the forming mold is used to clean the lower mold 41, the cleaning brush 30 for the forming mold is moved toward the lower mold 41 in such a manner that the front end portion of the bristle material 33 (32) constituting the long-hair region 32R contacts the bottom surface 41b of the concave portion of the lower mold 41, and the front end portion of the bristle material 33 (31) constituting the short-hair region 31R contacts the bottom surface 41b of the convex portion of the lower mold 41.

[0055] As an example, the distance L5 ( Figure 5 ) can be set to the same value as the length L2 of the hair material 33 (32) constituting the long-haired area 32R, and the distance L4 from the outer peripheral surface of the shaft member 38 to the surface 41a can be set to the same value as the length L1 of the hair material 33 (31) constituting the short-haired area 31R.

[0056] In the resin molding device 100 including the molding mold cleaning brush 30 as described above, when the molding mold is cleaned using the molding mold cleaning brush 30, the bristle material 33 (32) constituting the long-hair region 32R can reach the surface 41a of the convex portion of the lower mold 41 and the side surface or the bottom surface 41b of the concave portion which is the inner surface of the cavity, and the bristle material 33 (32) can remove the resin and the like attached to the bottom surface 41b of the concave portion as the shaft member 38 rotates. The bristle material 33 (31) constituting the short-hair region 31R can reach the surface 41a of the convex portion of the lower mold 41, and the bristle material 33 (31) can remove the resin and the like attached to the surface 41a of the convex portion of the lower mold 41 as the shaft member 38 rotates.

[0057] (Function and Effect)

[0058] As mentioned at the beginning, in the previous method for manufacturing a brush, a plurality of bristle material bundles are fixed to the periphery of the shaft member, thereby forming a plurality of implanted hair portions on the periphery of the shaft member. Space is required around the portion where the bristle material bundles are implanted for the operation of fixing the bristle material bundles to the shaft member. Since it is necessary to ensure space, it is difficult to reduce the intervals between adjacent bristle material bundles, and thus it is difficult to form a bristle material with a high density on the peripheral surface of the shaft member. In addition, in the previous method for manufacturing a brush, it is necessary to prepare a plurality of bristle material bundles for forming the implanted hair portions, and to fix the plurality of bristle material bundles to the shaft member one by one. In this method, it is necessary to perform multiple operations of fixing the plurality of bristle material bundles to the shaft member one by one.

[0059] On the other hand, according to the manufacturing method of the cleaning brush 30 for a molding die of the present embodiment, by fixing the bristle material 33 to the channel member 35 ( Figure 7 ) to form a channel brush 36 ( Figure 7After preparing such a channel brush 36, the channel brush 36 is spirally wound and fixed on the shaft member 38 ( Figure 3 , Figure 4 , Figure 8 ) around (refer to Figure 8 At this time, the two ends of the channel member 35 in the longitudinal direction can be fixed to the surface of the shaft member 38 by welding or the like. Then, with the channel brush 36 wound around the shaft member 38, a part or all of the front ends of the bristle material 33 are cut off by a grinder or the like (see Fig. 9 ).

[0060] By the manufacturing method, when the channel brush 36 is spirally wound and fixed, the next part of the channel brush 36 can be wound around the shaft member 38 in a manner adjacent to the part of the channel brush 36 that was wound around the shaft member 38 one circle ago (one week ago). Compared with the case where the bristles are embedded in the shaft member, the bristles 33 can be efficiently arranged on the shaft member 38 with a high density, thereby achieving a higher cleaning effect brought by the cleaning brush 30 for the forming mold.

[0061] (First Modification of Embodiment)

[0062] Fig.10 It is a plan view showing a state in which the lower mold 41 is cleaned by the cleaning brush 30 for the molding mold in the first modified example of the embodiment. In the lower mold 41, a cavity 46 and a resin passage 45 are formed as a concave portion 44 on the inner side of the parting surface 43 as the convex portion of the lower mold 41, and the cavity 46 is connected to the material removal pool 48 via a plurality of resin passages 45.

[0063] As such a molding die cleaning brush 30 for cleaning the lower mold 41, for example, a long-hair region 32R is provided in the center in the axial direction in a horizontally long shape corresponding to the shapes of the concave and convex portions of the lower mold 41, and short-hair regions 31R are provided on both sides thereof. The long-hair region 32R has a covering portion located at Fig.10 The entire left cavity 46 and the entire width of the cavity 46 located on the right are covered. The cavity 46 and the resin passage 45, which are the recessed portions of the lower mold 41, are cleaned through the hairy region 32R.

[0064] As the above-mentioned molding die cleaning brush 30 for cleaning the upper die corresponding to the lower die 41, for example, Fig.11 As shown. Fig.11 The cleaning brush 30 for forming mold shown in the figure is provided with a short-hair region 31R in the center corresponding to the shape of the concave and convex parts in the upper mold, and is provided with long-hair regions 32R on both sides thereof, and a short-hair region 31R is provided on the outer side thereof. The short-hair region 31R can clean the bottom surface of the concave part of the cavity of the upper mold.

[0065] Can also be used in the upper mold Fig.10 That is, the resin passage 45 or the material removal pool 48 may also be provided in the upper mold. In the above case, the short-hair region 31R and the long-hair region 32R of the cleaning brush 30 for the molding mold are also arranged according to the structure of the concave and convex parts of the upper mold. Fig.10 The situation shown is similarly appropriately configured.

[0066] (Second Modification of Embodiment)

[0067] Fig.12 1 is a plan view showing another example of a lower mold 41 that can be cleaned by a molding mold cleaning brush 30 in the second variant of the embodiment. In the lower mold 41, a portion of the parting surface 43 as a convex portion of the lower mold 41 extends in a manner extending toward the mold cavity 46, and the extended portion constitutes a blocking portion 43D. That is, as a convex portion in the lower mold 41, at least one of the surfaces of the parting surface 43 and the blocking portion 43D is included. For the lower mold 41 having such a shape, for example, Fig.10 The forming mold shown is cleaned with a cleaning brush 30.

[0068] Can also be used in the upper mold Fig.12 That is, the upper mold may be provided with not only the resin passage 45 or the material removal pool 48 but also the blocking portion 43D. In the above case, the short-hair region 31R and the long-hair region 32R of the cleaning brush 30 for the molding mold also correspond to the structure of the concave and convex portions of the upper mold. Fig.10 The situations shown in the above are appropriately configured in the same manner.

[0069] Although the embodiments of the present disclosure have been described above, the embodiments of the present disclosure should be considered to be illustrative in all aspects and non-restrictive. The scope of the present disclosure is indicated by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0070] Explanation of symbols

[0071] 1: Supply module

[0072] 2: Control Department

[0073] 4: Resin molding module

[0074] 5: Molded product removal module

[0075] 10: Supply Department

[0076] 30: Cleaning brush for forming mold

[0077] 31R: Short-haired area

[0078] 32R: Long hair area

[0079] 33: Wool

[0080] 35: Channel components

[0081] 35T: End

[0082] 36: Channel Brush

[0083] 38: Shaft component

[0084] 38c: Axis

[0085] 40: Forming section

[0086] 41: Lower mold

[0087] 41a: Surface

[0088] 41b: Bottom

[0089] 42: Upper mold

[0090] 43: Parting surface

[0091] 43D: Blocking part

[0092] 44: concave part

[0093] 45: Resin channel

[0094] 46: Cavity

[0095] 48: Material removal pool

[0096] 50: Move out of the institution

[0097] 51: First Ontology Department

[0098] 52: Second body

[0099] 60: Discharge section

[0100] 100: Resin molding device

[0101] L1: Length (first length)

[0102] L2: Length (second length)

[0103] L3: Dimensions

[0104] L4, L5: Distance

Claims

1. A method for manufacturing a cleaning brush for a forming mold, wherein the cleaning brush for a forming mold is used to clean a forming mold included in a resin forming device, and the method for manufacturing the cleaning brush for a forming mold comprises the following steps: A step of preparing a channel brush formed by fixing a bristle material to a channel member; The step of spirally winding the channel brush and fixing it around a shaft member extending in the axial direction; and The step of cutting off a part or all of the leading ends of the bristle material while the channel brush is wound around the shaft member. By cutting off the front ends of part or all of the bristles, the channel brush on the shaft member forms a short-hair region including the bristles having a first length and a long-hair region including the bristles having a second length longer than the first length.

2. The method for manufacturing a cleaning brush for a molding die according to claim 1, wherein The short-hair regions and the long-hair regions are arranged alternately in a circumferential direction around the shaft member.

3. The method for manufacturing a cleaning brush for a molding die according to claim 1 or 2, wherein The short-hair region is provided with an angle range in the circumferential direction around the shaft member as the center, which is 60° or more and 90° or less. The angular range of the circumferential direction around the shaft member where the long-hair region is provided is 60° or more and 90° or less.

4. The method for producing a cleaning brush for a molding die according to any one of claims 1 to 3, wherein The difference between the first length and the second length is 1.0 mm or more.

5. A method for manufacturing a resin molding device, the resin molding device comprising a molding die, the method for manufacturing the resin molding device comprising the following steps: A step of manufacturing a cleaning brush for a molding die by the method for manufacturing a cleaning brush for a molding die according to any one of claims 1 to 4, The short-hair region of the molding die cleaning brush is arranged so as to be contactable with the convex portion of the molding die. The long-haired region of the molding die cleaning brush is arranged to contact the recessed portion of the molding die.

6. The method for manufacturing a resin molding device according to claim 5, wherein The recessed portion of the molding die includes at least one of a bottom surface of a cavity of the molding die and a bottom surface of a resin passage connected to the cavity.

7. The method for manufacturing a resin molding device according to claim 5 or 6, wherein The convex portion of the molding die includes at least one of a parting surface of the molding die and a surface of a blocking portion provided in a cavity of the molding die.

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