Dispensing device, resin molded product manufacturing device, and resin molded product manufacturing method
The discharge device with a check valve and sealing member addresses the issue of unstable resin discharge, enabling precise control over the dispensed amount by preventing dripping and ensuring accurate application.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- TOWA
- Filing Date
- 2023-01-13
- Publication Date
- 2026-07-29
AI Technical Summary
Existing resin supply devices suffer from unstable discharge amounts of liquid resin due to dripping at the nozzle tip, leading to imprecise control over the dispensed amount.
A discharge device with a plunger equipped with a check valve that allows gas flow in one direction and prevents it in the opposite direction, combined with a sealing member to maintain airtightness, ensuring precise control over resin discharge.
The device achieves precise control over the dispensed resin amount by preventing dripping and allowing for accurate resin application.
Smart Images
Figure 0007897160000001 
Figure 0007897160000002 
Figure 0007897160000003
Abstract
Description
Technical Field
[0004] , , , ,
[0005] , , , , ,
[0001] The present disclosure relates to a discharge device, a resin molded product manufacturing device, and a resin molded product manufacturing method.
Background Art
[0002] For example, Patent Document 1 describes a resin supply device capable of discharging a liquid resin from a nozzle onto a workpiece by pressing the liquid resin stored in a syringe with a plunger and performing resin molding of the workpiece. In the resin supply device described in Patent Document 1, the discharge of the liquid resin from the nozzle is stopped by stopping the downward movement of the plunger and closing the pinch valve.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] However, in the resin supply device described in Patent Document 1, when the downward movement of the plunger stops, dripping of the liquid resin occurs at the tip of the nozzle, and the liquid resin that has dripped at the tip of the nozzle falls onto the workpiece by closing the pinch valve. Here, since the amount of the liquid resin falling onto the workpiece is unstable, there is a problem that the discharge amount of the liquid resin cannot be controlled with high precision.
Means for Solving the Problems
[0005] According to this disclosure, a discharge device can be provided comprising: a cartridge holding part configured to hold a cartridge having a discharge port from which a liquid resin is contained inside; a plunger configured to be movable in a first direction and a second direction inside the cartridge; and a sealing member provided to make the space between the plunger and the cartridge airtight, wherein the liquid resin can be discharged from the discharge port of the cartridge by the movement of the plunger in the first direction, and the plunger is provided with a flow path that enables the flow of gas between a first side, which is the side where the liquid resin is located, and a second side, which is opposite to the first side, and the plunger is equipped with a check valve that enables the flow of gas from the first side to the second side when the plunger moves in the first direction, and prevents the flow of gas from the second side to the first side when the plunger moves in the second direction.
[0006] According to this disclosure, a resin molded product manufacturing apparatus is provided, comprising a discharge module equipped with the above-mentioned discharge device, a press module equipped with an upper die and a lower die, a first transport mechanism configured to transport a substrate to the upper die, and a second transport mechanism configured to transport a film from which liquid resin has been discharged by the discharge module to the lower die, wherein the press module is configured to manufacture a resin molded product including a substrate by clamping the upper die and the lower die.
[0007] According to this disclosure, a method for manufacturing a resin molded product using the above-described resin molded product manufacturing apparatus is provided, comprising the steps of: discharging liquid resin onto a film using an extrusion device; setting a substrate on an upper mold; setting a film on which liquid resin is placed on a lower mold; and clamping the mold using the upper and lower molds. [Effects of the Invention]
[0008] According to embodiments of this disclosure, it is possible to provide a dispensing device capable of precisely controlling the amount of liquid resin dispensed, a manufacturing device for resin molded products, and a method for manufacturing resin molded products. [Brief explanation of the drawing]
[0009] [Figure 1] This figure shows a schematic configuration of an example of a manufacturing apparatus for resin molded products according to an embodiment. [Figure 2] This is a schematic partial cross-sectional view of an example of a dispensing device provided in the dispensing module shown in Figure 1. [Figure 3] This is a schematic, enlarged cross-sectional view illustrating an example of the function of a check valve when the plunger's pressing portion moves downward. [Figure 4] This is a schematic, enlarged cross-sectional view illustrating an example of the function of a check valve when the plunger's pressing portion moves upward. [Figure 5] This is a schematic enlarged section cross-sectional view of another example of a plunger equipped with a check valve. [Figure 6] Figures (a) to (c) are schematic partial cross-sectional views illustrating an example of the operation and effect of the discharge device of the embodiment. [Figure 7] This is a flowchart of an example of a method for manufacturing a resin molded product according to the embodiment. [Figure 8] This is a schematic cross-sectional view of an example of a resin molding apparatus. [Figure 9] This is another schematic cross-sectional view of an example of a resin molding apparatus. [Modes for carrying out the invention]
[0010] The embodiments will be described below. In the drawings used to describe the embodiments, the same reference numerals represent the same part or a corresponding part.
[0011] <Manufacturing equipment for resin molded products> Figure 1 shows a schematic configuration of an example of a resin molded product manufacturing apparatus according to the embodiment. As shown in Figure 1, the resin molded product manufacturing apparatus 1000 comprises a substrate module 1001, a press module 1002, an ejection module 1003, and a film module 1004. The substrate module 1001 is configured to discharge a substrate 90 (see Figure 8) to be resin molded. The film module 1004 is configured to discharge a film 70a (see Figure 6). The ejection module 1003 is configured to eject a thermosetting liquid resin 13 (see Figure 2) onto the film 70a transported from the film module 1004. The press module 1002 is configured to resin mold the substrate 90 transported from the substrate module 1001 using the liquid resin 13 on the film 70a transported from the ejection module 1003. For example, electronic components are arranged on one side of the substrate 90, and the side of the substrate 90 on which the electronic components are arranged is sealed with resin. As the liquid resin 13, for example, a liquid resin 13 used in the semiconductor packaging field can be used.
[0012] In the example shown in Figure 1, the substrate module 1001, press module 1002, ejection module 1003, and film module 1004 are each described as separate modules. However, each module may be detachable from the other modules, and the number of modules may be increased or decreased. For example, a configuration may be made in which two or three ejection modules 1003 are placed between the press module 1002 and the film module 1004.
[0013] The resin molded product manufacturing apparatus 1000 further comprises a first transport mechanism 501 and a second transport mechanism 502. The first transport mechanism 501 is configured to transport the substrate 90 discharged from the substrate module 1001 to the upper mold 81 (see Figure 8) of the resin molding apparatus 80 (see Figure 8), which will be described later, of the press module 1002. The second transport mechanism 502 is configured to transport the film 70a, on which the liquid resin 13 has been discharged in the discharge module 1003, to the lower mold 87 (see Figure 8) of the resin molding apparatus, which will be described later, of the press module 1002. The second transport mechanism 502 is further configured to transport the film 70a discharged from the film module 1004 and without the liquid resin 13 on it, to the discharge module 1003.
[0014] <Discharge device> Figure 2 shows a schematic partial cross-sectional view of an example of a discharge device provided in the discharge module 1003 shown in Figure 1. As shown in Figure 2, the discharge device 100 includes a plurality of locking parts 16 which serve as cartridge holding parts that are configured to hold the cartridge 10, a plunger 20 which is configured to be movable upward and downward inside the cartridge 10, and a sealing member 30 which is provided to make the space between the plunger 20 and the cartridge 10 airtight.
[0015] <Cartridge holder> A plurality of locking portions 16 as a cartridge holding portion are configured to extend in the vertical direction in the ejection device 100. The lower end portion of each of the plurality of locking portions 16 constitutes a protrusion 16a that protrudes toward the side where a metal cylinder 12 described later is installed. An opening 16b for installing a cartridge 10 described later is provided between the protrusions 16a of each of the plurality of locking portions 16. Each of the plurality of locking portions 16 is located outside the side surface of the metal cylinder 12 described later. The plurality of locking portions 16 are configured to be movable in the vertical direction and the horizontal direction by a drive mechanism not shown. Here, the "vertical direction" means the vertical direction of the paper surface of FIG. 2. The "horizontal direction" is perpendicular to the vertical direction of the paper surface of FIG. 2 and means a direction parallel to the paper surface of FIG. 2. The protrusion 16a of each of the plurality of locking portions 16 is locked with the protrusion 12a of the metal cylinder 12. At this time, the upper surface of the protrusion 16a of each of the plurality of locking portions 16 is in contact with the lower surface of the protrusion 12a of the metal cylinder 12. The protrusion 16a of the plurality of locking portions 16 prevents the metal cylinder 12, that is, the downward movement of the cartridge 10. By the protrusion 16a of the plurality of locking portions 16 being locked with the protrusion 12a of the metal cylinder 12, the cartridge 10 accommodated in the metal cylinder 12 can be held. Incidentally, a handle not shown may be attached to one outer surface of the metal cylinder 12. <The plunger>
[0016] The plunger 20 is positioned in a space surrounded by a plurality of locking portions 16 so as not to contact the plurality of locking portions 16. The plunger 20 includes a plunger pressing portion 22 and a plunger shaft portion 21 attached to the plunger pressing portion 22. The plunger pressing portion 22 is configured in a columnar shape extending in the vertical direction. The corners of the lower end surface of the plunger pressing portion 22 are chamfered so that the lower direction is tapered. The plunger shaft portion 21 is configured in a columnar shape protruding upward from the central portion of the upper end surface of the plunger pressing portion 22. The cross-sectional area of the cross-section of the plunger shaft portion 21 is smaller than the area of the upper end surface of the plunger pressing portion 22. The "cross-sectional area of the cross-section" means the cross-sectional area of the cross-section cut in the left-right direction. A part of the upper direction of the plunger shaft portion 21 is accommodated in the servo motor 40. By controlling the operation of the servo motor 40, it is possible to move the plunger pressing portion 22 attached to the lower side of the plunger shaft portion 21 in the vertical direction. The plunger pressing portion 22 functions as a moving body.
[0017] Openings are provided in each of the upper end surface and the lower end surface of the plunger pressing portion 22. The plunger pressing portion 22 is provided with a flow path 23 that connects the opening 22b (see FIGS. 3 and 4) on the upper end surface of the plunger pressing portion 22 and the opening 22a (see FIGS. 3 and 4) on the lower end surface of the plunger pressing portion 22. The lower side of the plunger 20 is the first side where the liquid resin 13 is located, and is the side in the first direction (the direction indicated by the arrow 64 (downward direction)) from the broken line 62 (a virtual line parallel to the lower surface of the plunger pressing portion 22) in FIG. 2. The upper side of the plunger 20 is the second side opposite to the first side, and is the side in the second direction (the direction indicated by the arrow 63 (upward direction)) from the broken line 61 (a virtual line parallel to the upper surface of the plunger pressing portion 22) in FIG. 2. The flow path 23 enables the flow of gas between the first side and the second side.
[0018] The plunger 20 is equipped with a check valve 50 (see Figures 3 and 4). The check valve 50 is not shown in Figure 2. The check valve 50 allows gas to flow from the first side (bottom) to the second side (top) of the plunger 20 when the plunger pressing portion 22, which is inserted into the liquid resin containment portion 14 of the cartridge 10, moves in a first direction (downward). The check valve 50 also prevents gas from flowing from the second side (top) to the second side (bottom) of the plunger 20 when the plunger pressing portion 22, which is inserted into the liquid resin containment portion 14 of the cartridge 10, moves in a second direction (upward). The details of the function of the check valve 50 will be described later.
[0019] <Sealing material> An annular sealing member 30 is fitted onto the side surface of the plunger pressing portion 22. A recess is provided along the circumferential direction on the side surface of the plunger pressing portion 22. The sealing member 30 is fitted into the recess on the side surface of the plunger pressing portion 22. A portion of the outer surface of the sealing member 30 is exposed from the recess on the side surface of the plunger pressing portion 22. For example, an O-ring can be used as the sealing member 30. When the plunger 20 moves in the vertical direction, the sealing member 30 positioned on the side surface of the plunger pressing portion 22 moves while in contact with the inner surface 15 of the liquid resin containment portion 14 (see Figures 3 and 4). Therefore, even while the plunger pressing portion 22 is moving in the vertical direction, it is possible to maintain airtightness between the plunger pressing portion 22 and the inner surface 15 of the liquid resin containment portion 14 of the cartridge 10.
[0020] <Cartridge> The dispensing device 100 having the configuration described above is used by installing an annular projection 12a that protrudes to the outside of the metal cylinder 12 of the cartridge 10 (described later) on the projection 16a of the multiple locking parts 16 which serve as cartridge holding parts, as described above. The cartridge 10 contains liquid resin 13 inside and has a discharge port 14a from which the liquid resin 13 is discharged. The cartridge 10 comprises a substantially cylindrical metal cylinder 12 that forms the side surface of the cartridge 10 extending in the vertical direction, and a substantially cylindrical liquid resin storage part 14 made of plastic that is fitted inside the metal cylinder 12. The substantially cylindrical metal cylinder 12 has an annular projection 12a that protrudes to the outside of the metal cylinder 12 from the upper end of the side surface of the metal cylinder 12. The upper annular projection 12a of the metal cylinder 12 surrounds the upper opening 12b of the metal cylinder 12. The metal cylinder 12 has an annular projection 12c that protrudes inward from the lower end of the side surface of the metal cylinder 12. The lower annular projection 12c of the metal cylinder 12 surrounds the lower opening 12d of the metal cylinder 12.
[0021] The liquid resin container 14 is configured to contain the liquid resin 13. The liquid resin container 14 is, for example, a syringe. The liquid resin container 14 is substantially cylindrical and has sides that extend in the vertical direction. A portion of the upper side of the liquid resin container 14 protrudes upward from the upper opening 12b of the metal cylinder 12. The liquid resin container 14 has an annular projection 14b that protrudes outward from the upper end of the side surface of the liquid resin container 14. An opening 14c is provided on the inside of the liquid resin container 14 from the upper end of the side surface of the liquid resin container 14. The lower end 14d of the liquid resin container 14 is configured to proceed inward along the lower projection 12c of the metal cylinder 12 and then protrude downward from the lower opening 12d of the metal cylinder 12. The portion of the lower end 14d of the liquid resin containment section 14 that protrudes downward from the lower opening 12d of the metal cylinder 12 corresponds to the discharge port 14a of the cartridge 10.
[0022] The cartridge 10 includes a lid 11 that is placed on the surface of the liquid resin 13. The lid 11 is configured to seal the liquid resin 13 so that it does not leak out of the liquid resin container 14. The plunger pressing portion 22 of the plunger 20 described above is placed on the upper surface of the lid 11, and the plunger pressing portion 22 moves downward. As a result, the plunger pressing portion 22 presses the liquid resin 13 through the lid 11, and the liquid resin 13 is discharged downward from the discharge port 14a of the cartridge 10. When replacing an old cartridge 10 with a new cartridge 10, the following procedure can be followed. First, the protruding portion 12a of the metal cylinder 12 of the old cartridge 10 is removed from each of the protruding portions 16a of the multiple locking portions 16. Next, the protruding portion 12a of the metal cylinder 12 of the new cartridge 10 is locked to each of the protruding portions 16a of the multiple locking portions 16.
[0023] <Flow path> Figure 3 shows a schematic enlarged partial cross-sectional view illustrating an example of the function of the check valve 50 when the plunger pressing portion 22 moves downward. Figure 4 shows a schematic enlarged partial cross-sectional view illustrating an example of the function of the check valve 50 when the plunger pressing portion 22 moves upward. As shown in Figures 3 and 4, the flow path 23 provided in the plunger pressing portion 22 of the plunger 20 extends vertically inside the plunger pressing portion 22. The flow path 23 comprises a first flow path 23a, a second flow path 23b, and a third flow path 23c that extend vertically inside the plunger pressing portion 22. The lower side of the first flow path 23a is connected to an opening 22a provided on the lower end surface of the plunger pressing portion 22. The upper side of the second flow path 23b is connected to an opening 22b provided on the upper end surface of the plunger pressing portion 22. The upper side of the first flow path 23a is connected to the lower side of the third flow path 23c. The lower side of the second flow path 23b is connected to the upper side of the third flow path 23c. The cross-sectional area of the first flow path 23a is smaller than the cross-sectional area of the third flow path 23c. The cross-sectional area of the second flow path 23b is smaller than the cross-sectional area of the third flow path 23c. In the example shown in Figures 3 and 4, the check valve 50 is located within the third flow path 23c.
[0024] <Check valve> In the example shown in Figures 3 and 4, the check valve 50 comprises a closing member 51 and an elastic body 52. The closing member 51 moves vertically within the third flow path 23c. The closing member 51 is configured to close the opening 24a that connects to the first flow path 23a within the third flow path 23c. The elastic body 52 is located within the third flow path 23c and is configured to expand and contract vertically. The lower end of the elastic body 52 is connected to the upper end of the closing member 51. The upper side of the elastic body 52 is connected to the surface of the opening 24b that connects to the second flow path 23b within the third flow path 23c.
[0025] As shown in Figure 3, when the plunger pressing portion 22 moves downward, the gas between the plunger pressing portion 22 and the lid 11 in the liquid resin containment portion 14 pushes the closing member 51 upward. As a result, the elastic body 52 contracts, and the closing member 51 moves upward away from the opening 24a. Consequently, a gas passage is formed in the third flow path 23c from the opening 24a to the opening 24b, and the gas on the first side of the plunger 20 (lower side: in the direction indicated by the dashed line 62 and arrow 64 (downward)) flows out through the flow path 23 to the second side of the plunger 20 (upper side: in the direction indicated by the dashed line 61 and arrow 63 (upward)).
[0026] On the other hand, as shown in Figure 4, when the plunger pressing portion 22 moves upward, the gas on the second side (upper side) of the plunger 20 pushes the closing member 51 downward within the third flow path 23c. As a result, the elastic body 52 stretches, and the closing member 51 closes the opening 24a. Therefore, within the liquid resin containment portion 14, the gas on the second side (upper side) of the plunger 20 is prevented from flowing out to the first side (lower side) of the plunger 20 through the flow path 23. Consequently, the gas on the second side (upper side) of the plunger 20 is prevented from flowing into the space between the plunger pressing portion 22 on the first side (lower side) of the plunger 20 and the lid 11.
[0027] As described above, when the plunger pressing portion 22 moves downward (first direction), the check valve 50 allows gas to flow from the lower side (first side) to the upper side (second side) in the plunger pressing portion 22. Furthermore, when the plunger pressing portion 22 moves upward (second direction), the check valve 50 can prevent gas from flowing from the upper side (second side) to the lower side (first side) in the plunger pressing portion 22.
[0028] The configuration of the check valve 50 is not limited to a configuration using a closing member 51 and an elastic body 52. The configuration of the check valve 50 is sufficient as long as the opening 24a is closed when the plunger pressing portion 22 moves upward, and the opening 24a is released when the plunger pressing portion 22 moves downward.
[0029] Figure 5 shows a schematic enlarged section view of another example of a plunger equipped with a check valve. The plunger 20 further includes a columnar mounting member 50a extending in the vertical direction. As shown in Figure 5, the upper end surface of the plunger pressing portion 22 is provided with a screw hole extending downward from the upper end surface of the plunger pressing portion 22. A screw groove is provided on the lower side of the mounting member 50a. The mounting member 50a is attached to the plunger pressing portion 22 by screwing the screw groove on the lower side of the mounting member 50a into the screw hole of the plunger pressing portion 22.
[0030] Openings (not shown) are provided on the upper and lower end surfaces of the mounting member 50a. A flow path (not shown) is provided inside the mounting member 50a, connecting the openings on the upper and lower end surfaces of the mounting member 50a. The plunger pressing portion 22 is provided with a flow path 23 that communicates with the opening provided on the lower end surface of the mounting member 50a. The flow path 23 of the plunger pressing portion 22 communicates with the opening provided on the lower end surface of the mounting member 50a. The flow path 23 of the plunger pressing portion 22 and the flow path provided inside the mounting member 50a form a flow path that enables the flow of gas between the first side and the second side of the plunger 20.
[0031] In the example shown in Figure 5, a check valve 50 having the functions shown in Figures 3 and 4 is provided inside the mounting member 50a. For example, inside the mounting member 50a, a passage (hereinafter referred to as "A passage") is formed that communicates with the opening on the lower end surface of the mounting member 50a, corresponding to the first passage 23a extending vertically as shown in Figures 3 and 4. Also, inside the mounting member 50a, a passage (hereinafter referred to as "B passage") is formed that communicates with the opening on the upper end surface of the mounting member 50a, corresponding to the second passage 23b extending vertically as shown in Figures 3 and 4. Furthermore, inside the mounting member 50a, a passage C is formed that connects passage A and passage B, corresponding to the third passage 23c extending vertically as shown in Figures 3 and 4. The upper side of passage A communicates with the lower side of passage C. The lower side of passage B communicates with the upper side of passage C. The cross-sectional area of the cross section of passage A is smaller than the cross-sectional area of the cross section of passage C. The cross-sectional area of channel B is smaller than the cross-sectional area of channel C. As in Figures 3 and 4, the check valve 50 of the mounting member 50a is located in channel C.
[0032] Alternatively, a screw hole extending downward from the lower end surface of the mounting member 50a may be provided. In this case, a columnar body projecting upward from the upper end surface of the plunger pressing portion 22 is provided on the upper end surface of the plunger pressing portion 22, and a screw groove is provided on its outer surface. The mounting member 50 is attached to the plunger pressing portion 22 by screwing the upper screw groove of the columnar body into the screw hole on the lower end surface of the mounting member 50a. In this case as well, the same flow channels (flow channels A, B, and C) as described above are formed inside the columnar body projecting upward from the upper end surface of the plunger pressing portion 22 and inside the mounting member 50.
[0033] <Effects of the dispensing device> Figures 6(a) to 6(c) show schematic partial cross-sectional views illustrating an example of the operation and effect of the discharge device 100 of the embodiment. In Figures 6(a) to 6(c), the projection 12a of the metal cylinder 12 and the multiple locking parts 16 are omitted from the description. First, as shown in Figure 6(a), with the plunger pressing part 22 positioned above the lid 11 of the cartridge 10, the operation of the servo motor 40 is controlled to move the plunger pressing part 22 downward. This causes the plunger pressing part 22 to press the lid 11 of the cartridge 10 downward. As a result, the liquid resin 13 contained inside the liquid resin containment part 14 is pressed, and the liquid resin 13 is discharged downward from the discharge port 14a of the cartridge 10. When the plunger pressing part 22 moves downward, as shown in Figure 3, the closing member 51 of the check valve 50 opens the opening 24a provided in the third flow path 23c.
[0034] A mounting base 70 is positioned below the cartridge 10. A film 70a is placed on the mounting base 70. A frame-shaped tray cover 71 is placed on the film 70a. The discharge port 14a of the cartridge 10 is located above the film 70a inside the tray cover 71. Therefore, the liquid resin 13 discharged from the discharge port 14a falls onto the film 70a inside the tray cover 71.
[0035] Next, when the discharge device 100 completes the discharge of the liquid resin 13, the downward movement of the plunger pressing part 22 is stopped by controlling the operation of the servo motor 40. At this time, dripping of the liquid resin 13 occurs near the discharge port 14a. After stopping the downward movement of the plunger pressing part 22, the plunger pressing part 22 is moved upward, as shown in Figure 6(b). When the plunger pressing part 22 moves upward, as shown in Figure 4, the closing member 51 of the check valve 50 closes the opening 24a provided in the third flow path 23c. In addition, the sealing member 30 makes the space between the plunger pressing part 22 and the inner surface 15 of the liquid resin containment part 14 of the cartridge 10 airtight. Therefore, when the plunger pressing part 22 moves upward, the space between the plunger pressing part 22 and the lid 11 is in a vacuum state or a near-vacuum state. Therefore, the air pressure in the space 24 between the plunger pressing portion 22 and the lid 11 becomes a negative pressure, which is lower than atmospheric pressure.
[0036] As a result, the dripping of liquid resin 13 is pushed upward by atmospheric pressure. This causes the upper surface of the liquid resin 13 and the lid 11 to move upward by, for example, a height h, as shown in Figure 6(c). As a result, the lid 11 comes into contact with the plunger pressing part 22 again. In this way, by moving the plunger pressing part 22 upward, the dripping of liquid resin 13 occurring near the discharge port 14a can be returned to the inside of the liquid resin storage part 14 (hereinafter, this phenomenon is referred to as "suck-back"). In the resin supply device described in Patent Document 1, when the discharge of liquid resin is completed, the pinch valve blocks the flow path of the nozzle, causing dripping at the tip of the nozzle. In the discharge device 100 of the embodiment, suck-back is achieved, so the occurrence of liquid resin 13 falling can be suppressed. As a result, the discharge device 100 of the embodiment and the resin molded product manufacturing apparatus equipped with the discharge device 100 of the embodiment can control the discharge amount of liquid resin 13 with higher precision than the resin supply device described in Patent Document 1.
[0037] <Method for manufacturing resin molded products> Figure 7 shows a flowchart of an example of a method for manufacturing a resin molded product according to the embodiment. As shown in Figure 7, in the method for manufacturing a resin molded product according to the embodiment, first, the dispensing device 100 dispenses liquid resin 13 onto the film 70a (step S101). Next, the first transport mechanism 501 places the substrate 90 on the lower surface of the upper mold 81 (see Figure 8) of the molding die (step S102). At this time, the electronic components are located on the lower surface of the substrate 90. Note that step S102 may be executed before step S101. Steps S101 and S102 may be executed simultaneously. Step S101 may be executed while step S102 is being executed. The molding die comprises an upper mold 81 and a lower mold 87.
[0038] After step S101 is performed, the second transport mechanism 501 places the film 70a on which the liquid resin 13 is placed on the upper surface of the lower mold 87 of the molding die (step S103). After step S103 is performed, the lower mold 87 is moved upward onto the upper mold 81 to perform mold clamping (step S104). After the upward movement of the lower mold 87 stops and mold clamping is performed, the temperature of the molding die is raised (step S105). After step S105 is performed, the process waits until the liquid resin 13 hardens (step S106). After step S106 is performed, the lower mold 87 is moved downward to perform mold opening (step S107). As a result, a resin molded product is manufactured in which the lower surface of the substrate 90 is sealed with resin.
[0039] Process S101 is carried out, for example, as follows. First, the second transport mechanism 502 transports the film 70a and the frame-shaped tray cover 71 placed on the film 70a from the film module 1004 shown in Figure 1 to the discharge module 1003. Next, the discharge device 100 of the discharge module 1003 discharges the liquid resin 13 from the discharge port 14a of the cartridge 10 onto the film 70a inside the tray cover 71. The discharge of the liquid resin 13 by the discharge device 100 is carried out, for example, in the manner shown in Figures 6(a) to 6(c).
[0040] In step S102, for example, the first transport mechanism 501 transports the substrate 90 from the substrate module 1001 shown in Figure 1 to the press module 1002 and places it on the lower surface of the upper die 81 of the molding die in the press module 1002.
[0041] In step S103, for example, the second transport mechanism 502 transports the film 70a, on which the liquid resin 13 has been dispensed, from the discharge module 1003 shown in Figure 1, together with the tray cover 71, to the press module 1002, and places the film 70a with the liquid resin 13 on it on the upper surface of the lower die 87 of the molding die in the press module 1002. The second transport mechanism 502 transports the tray cover 71 to the film module 1004 without installing the tray cover 71 inside the press module 1002.
[0042] Figure 8 shows a schematic cross-sectional view of an example of a resin molding apparatus after processes S101 to S103 have been completed. In the resin molding apparatus 80 shown in Figure 8, a block-shaped fixed platen 88 is supported by tie bars or a hold frame. An upper mold 81 is installed below the fixed platen 88. Below the fixed platen 88, a plate-shaped movable platen 86 is positioned, which moves vertically along the tie bars or hold frame. A lower mold 87 is installed above the movable platen 86.
[0043] The lower mold 87 comprises a rectangular parallelepiped bottom member 82, a frame-shaped side member 83, a plurality of elastic members 84, and a base plate 85. The base plate 85 is installed on the upper side of the movable platen 86. The bottom member 82 is installed on the upper side of the base plate 85. The sides of the bottom member 82 are covered by the side member 83. A plurality of elastic members 84 are arranged between the lower surface of the side member 83 and the base plate 85. The plurality of elastic members 84 expand and contract in the vertical direction. The upper surface of the side member 83 is located above the upper surface of the bottom member 82, and a recess is formed in the lower mold 87 that is recessed downwards. The second transport mechanism 502 places the film 70a on the upper surface of the lower mold 87 such that the liquid resin 13 on the film 70a is located at the bottom surface of the recess. The first transport mechanism 501 places the substrate 90 on the lower surface of the upper mold 81, as shown in Figure 8.
[0044] Figure 9 shows a schematic cross-sectional view of an example of a resin molding apparatus after process S104 is completed. In process S104, a mold clamping mechanism (not shown) moves the movable platen 86 shown in Figure 8 upward. This causes the lower mold 87 to move upward toward the upper mold 81. As the movable platen 86 moves upward, the frame-shaped side member 83 first contacts the substrate 90 via the film 70a. The upward movement of the movable platen 86 continues. As a result, with the upward movement of the side member 83 stopped, the side member 82 moves upward and the multiple elastic members 84 contract. When the upper surface of the side member 83 reaches a predetermined position, the upward movement of the movable platen 86 stops, and the mold clamping of process S104 is completed. After process S104 is completed, in process S105, the temperature of the molding die is increased. The liquid resin 13 is thermosetting. Therefore, if the temperature of the liquid resin 13 rises, the liquid resin 13 hardens and becomes cured resin 13a. In step S106, the process waits until the liquid resin 13 hardens. After step S106 is performed, in step S107, the lower mold 87 is moved downward by moving the base plate 85 downward. This opens the mold, and a resin molded product is manufactured in which the lower surface of the substrate 90 is sealed with resin.
[0045] In the method for manufacturing resin molded products of the embodiment described above, since the dispensing device 100 of the embodiment described above dispenses liquid resin 13, it is possible to manufacture resin molded products with high-precision control over the amount of liquid resin 13 dispensed, compared to the resin supply device described in Patent Document 1.
[0046] <Note> (Disclosure 1) Disclosure 1 is a discharge device comprising: a cartridge holding part configured to hold a cartridge having a discharge port from which a liquid resin is contained inside; a plunger configured to be movable in a first direction and a second direction inside the cartridge; and a sealing member provided to make the space between the plunger and the cartridge airtight, wherein the liquid resin can be discharged from the discharge port of the cartridge by the movement of the plunger in the first direction; the plunger is provided with a flow path that enables the flow of gas between a first side, which is the side where the liquid resin is located, and a second side, which is opposite to the first side; the plunger is provided with a check valve that enables the flow of gas from the first side to the second side when the plunger moves in the first direction, and prevents the flow of gas from the second side to the first side when the plunger moves in the second direction.
[0047] (Disclosure 2) Disclosure 2 is the dispensing device according to Disclosure 1, wherein the cartridge comprises a lid disposed on the surface of the liquid resin, and the plunger is configured to press the liquid resin through the lid.
[0048] (Disclosure 3) Disclosure 3 is a dispensing device according to disclosure 1 or 2, wherein the cartridge comprises a liquid resin containment section configured to contain the liquid resin.
[0049] (Disclosure 4) Disclosure 4 is a discharge device according to any one of disclosures 1 to 3, wherein the plunger comprises a movable body configured to be movable in the first and second directions, and the check valve is attached to the second side of the movable body.
[0050] (Disclosure 5) Disclosure 5 is the discharge device according to Disclosure 4, wherein the check valve is attached to the movable body by screwing.
[0051] (Disclosure 6) Disclosure 6 is a discharge device according to any one of disclosures 1 to 3, wherein the flow path comprises a first flow path connected to the opening of the plunger on the first side, a second flow path connected to the opening of the plunger on the second side, and a third flow path between the first flow path and the second flow path, and the check valve is provided in the third flow path.
[0052] (Disclosure 7) Disclosure 7 is the discharge device according to Disclosure 6, wherein the check valve comprises a closing member configured to close the opening on the first flow path side of the third flow path when the plunger moves in the second direction, and to open the opening when the plunger moves in the first direction.
[0053] (Disclosure 8) Disclosure 8 is a resin molded product manufacturing apparatus comprising: an ejection module equipped with an ejection device described in any one of Disclosures 1 to 7; a press module equipped with an upper die and a lower die; a first transport mechanism configured to transport a substrate to the upper die; and a second transport mechanism configured to transport a film from which the liquid resin has been ejected by the ejection module to the lower die, wherein the press module is configured to manufacture a resin molded product including the substrate by clamping the upper die and the lower die.
[0054] (Disclosure 9) Disclosure 9 is a method for manufacturing a resin molded product using the resin molded product manufacturing apparatus described in Disclosure 8, the method comprising: a step of the discharge device discharging the liquid resin onto the film; a step of placing the substrate on the upper mold; a step of placing the film on which the liquid resin is placed on the lower mold; and a step of clamping the mold using the upper mold and the lower mold.
[0055] As described above, the embodiments have been explained, but it is also planned from the outset that the configurations of each embodiment and example described above may be combined as appropriate.
[0056] The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of the invention is indicated by the claims rather than by the foregoing description, and all modifications within the meaning and scope equivalent to the claims are intended. [Explanation of Symbols]
[0057] 10 Cartridge, 11 Lid, 12 Metal cylinder, 12a, 12c, 14b, 16a Protruding parts, 12b, 12d, 14c, 22a, 22b, 24a, 24b Opening, 13 Liquid resin, 13a Hardened resin, 14 Liquid resin containment section, 14a Discharge port, 14d Lower end, 15 Inner surface, 16 Multiple locking parts, 20 Plunger, 21 Plunger shaft, 22 Plunger pressing part, 23 Flow path, 23a First flow path, 23b Second flow path, 23c Third flow path, 30 Seal member, 40 Servo motor, 50 Check valve, 50a Mounting part Material, 51 Closing member, 52 Elastic body, 61, 62 Dashed lines, 63, 64 Arrows, 70 Mounting platform, 70a Film, 71 Tray cover, 80 Resin molding apparatus, 81 Upper mold, 82 Bottom member, 83 Side member, 84 Elastic member, 85 Base plate, 86 Movable platen, 87 Lower mold, 88 Fixed platen, 90 Substrate, 100 Discharge device, 501 First transport mechanism, 502 Second transport mechanism, 1000 Resin molded product manufacturing apparatus, 1001 Substrate module, 1002 Press module, 1003 Discharge module, 1004 Film module.
Claims
1. A cartridge holder is configured to hold a cartridge that contains a liquid resin inside and has a discharge port from which the liquid resin is discharged, A plunger configured to be movable in a first direction and a second direction inside the cartridge, The system includes a sealing member provided to create an airtight seal between the plunger and the cartridge, The plunger is configured to be able to discharge the liquid resin from the discharge port of the cartridge by moving the plunger in the first direction. The plunger is provided with a flow path that allows gas to flow between a first side, which is the side where the liquid resin is located, and a second side, which is the side opposite to the first side. A discharge device comprising a plunger equipped with a check valve that allows gas to flow from the first side to the second side when the plunger moves in the first direction, and prevents gas from flowing from the second side to the first side when the plunger moves in the second direction.
2. The cartridge comprises a lid positioned on the surface of the liquid resin, The dispensing device according to claim 1, wherein the plunger is configured to press the liquid resin through the lid.
3. The plunger comprises a movable body configured to be movable in the first and second directions, The discharge device according to claim 1, wherein the check valve is attached to the second side of the moving body.
4. The discharge device according to claim 3, wherein the check valve is attached to the movable body by screwing.
5. The flow path comprises a first flow path connected to the opening of the plunger on the first side, a second flow path connected to the opening of the plunger on the second side, and a third flow path between the first flow path and the second flow path. The discharge device according to claim 1, wherein the check valve is provided in the third flow path.
6. The discharge device according to claim 5, wherein the check valve comprises a closing member configured to close the opening of the third flow path on the first flow path side when the plunger moves in the second direction, and to release the opening when the plunger moves in the first direction.
7. A discharge module comprising a discharge device according to any one of claims 1 to 6, A press module comprising an upper die and a lower die, The upper mold is configured to transport a substrate, and The lower mold is equipped with a second transport mechanism configured to transport the film from which the liquid resin has been dispensed by the dispensing module, The press module is configured to manufacture a resin molded product including the substrate by clamping the upper die and the lower die, and is a resin molded product manufacturing apparatus.
8. A method for manufacturing a resin molded product using the resin molded product manufacturing apparatus described in claim 7, The process involves the dispensing device dispensing the liquid resin onto the film, The steps include: installing the substrate in the upper mold, A step of placing the film on which the liquid resin is placed on the lower mold, A method for manufacturing a resin molded product, comprising the step of clamping the mold using the upper mold and the lower mold.