Discharge device, apparatus of manufacturing resin molded article, and method of manufacturing resin molded article

Abstract

To provide a discharge device, an apparatus of manufacturing a resin molded article, and a method of manufacturing a resin molded article, capable of controlling discharge quantity of a liquid resin with high accuracy, and capable of suppressing elongation of cycle time.SOLUTION: A discharge device (100) comprises cartridge holding parts (12 and 16), a plunger (20) and a discharge part (110). The discharge part (110) includes an elastic body (112). The elastic body (112) includes a recessed part (112d) that recedes in a direction opposite to a discharge direction (120) of a liquid resin (13). The recessed part (112d) is provided with a slit (112c). The liquid resin (13) can be discharged through a discharge port (123) of the elastic body (112) by movement of the plunger (20) in an axial direction.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a discharge device, a manufacturing device for a resin molded product, and a manufacturing method for a resin molded product. [Background technology]

[0002] For example, Patent Document 1 describes a resin supplying device that can perform resin molding of a workpiece by discharging liquid resin from a nozzle onto the workpiece by pressing liquid resin stored in a syringe with a plunger. In the resin supplying device described in Patent Document 1, discharging of 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] JP 2018-134846 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the resin supplying device described in Patent Document 1, when the downward movement of the plunger stops, the liquid resin drips from the tip of the nozzle, and when the pinch valve is closed, the liquid resin dripping from the tip of the nozzle falls onto the workpiece, which causes a deviation from the target value of the amount of liquid resin discharged. If the target value of the amount of liquid resin discharged deviates, it can have an adverse effect on the quality of the resin molded product, such as the dimensions and shape.

[0005] Furthermore, in the resin supplying device described in Patent Document 1, when dripping occurs at the tip of the nozzle, there is a problem that the cycle time is extended due to the need to wait for weight adjustment, or to release the pressure that accumulates in the liquid resin when pressed by the plunger, etc. When the cycle time is extended, the manufacturing efficiency of resin molded products decreases. [Means for solving the problem]

[0006] According to the present disclosure, it is possible to provide an ejection device comprising: a cartridge holding portion configured to hold a cartridge having a cylindrical liquid resin storage portion in which liquid resin is stored; a plunger configured to be movable in the axial direction of the liquid resin storage portion inside the liquid resin storage portion; and an ejection portion configured to be capable of ejecting liquid resin, the ejection portion including an elastic body, the elastic body including a recess that is recessed in the opposite direction to the ejection direction of the liquid resin, the recess having a notch, and configured to be capable of ejecting liquid resin through the ejection port of the elastic body by axial movement of the plunger.

[0007] According to the present disclosure, it is possible to provide a resin molded product manufacturing apparatus comprising an ejection module equipped with the above-mentioned ejection device, and a press module equipped with an upper mold and a lower mold, wherein the press module is configured to be capable of manufacturing a resin molded product using the liquid resin ejected by the ejection device.

[0008] According to the present disclosure, it is possible to provide a method for manufacturing a resin molded product using the above-mentioned resin molded product manufacturing apparatus, the method including a step of discharging liquid resin by a discharging device, and a step of performing resin molding using the liquid resin discharged by the discharging device. Effect of the Invention

[0009] According to the embodiments of the present disclosure, it is possible to provide a discharge device that is capable of controlling the amount of liquid resin discharged with high precision and suppressing the extension of cycle time, a resin molded product manufacturing apparatus, and a resin molded product manufacturing method. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of an example of a manufacturing apparatus for a resin molded product according to an embodiment. [Diagram 2] 2 is a schematic partial cross-sectional view of an example of a discharge device provided in the discharge module shown in FIG. 1. [Diagram 3] FIG. 4 is a schematic enlarged cross-sectional view of an example of an elastic body before liquid resin is discharged. [Figure 4] 4 is a schematic plan view of an example of the bottom surface of the elastic body shown in FIG. 3. [Diagram 5] 1 is a schematic enlarged cross-sectional view of an example of an elastic body when liquid resin is discharged. FIG. [Figure 6] 11 is a schematic enlarged cross-sectional view of an example of an elastic body after the discharge of liquid resin is completed. FIG. [Figure 7] 13 is a schematic partial cross-sectional view of another example of the discharge section before discharging the liquid resin. FIG. [Figure 8] 13 is a schematic partial cross-sectional view of another example of the discharge portion when discharging liquid resin. FIG. [Figure 9] 13 is a schematic partial cross-sectional view of another example of the discharge section after the discharge of the liquid resin is completed. FIG. [Figure 10] 2 is a flowchart of an example of a method for manufacturing a resin molded product according to an embodiment. [Figure 11] FIG. 2 is a schematic cross-sectional view of an example of a resin molding apparatus. [Figure 12] FIG. 11 is another schematic cross-sectional view of the example of the resin molding apparatus. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an embodiment will be described. In the drawings used in the description of the embodiment, the same reference numerals denote the same or corresponding parts.

[0012] <Resin molding manufacturing equipment> FIG. 1 shows a schematic configuration of an example of a manufacturing apparatus for a resin molded product according to an embodiment. As shown in FIG. 1, the manufacturing apparatus 1000 for a resin molded product includes a substrate module 1001, a press module 1002, a discharge module 1003, and a film module 1004. The substrate module 1001 is configured to be capable of carrying out a substrate 90 (see FIGS. 11 and 12) to be resin molded. The film module 1004 is configured to be capable of carrying out a film 70a (see FIGS. 11 and 12). The discharge module 1003 is configured to be capable of discharging a thermosetting liquid resin 13 (see FIG. 2) onto the film 70a conveyed from the film module 1004. The press module 1002 is configured to be capable of resin molding the substrate 90 conveyed from the substrate module 1001 using the liquid resin 13 placed on the film 70a conveyed from the discharge module 1003. For example, electronic components are arranged on one surface of the substrate 90, and the surface 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 field of semiconductor packaging can be used.

[0013] 1, the substrate module 1001, the press module 1002, the discharge module 1003, and the film module 1004 are described as separate modules, but each module may be detachable from the other modules and the number of modules may be increased or decreased. For example, two or three discharge modules 1003 may be arranged between the press module 1002 and the film module 1004.

[0014] The resin molded product manufacturing apparatus 1000 further includes a first conveying mechanism 501 and a second conveying mechanism 502. The first conveying mechanism 501 is configured to be capable of conveying the substrate 90 discharged from the substrate module 1001 to an upper die 81 (see FIGS. 11 and 12) of a mold of a resin molding apparatus 80 (see FIGS. 11 and 12) of the press module 1002, which will be described later. The second conveying mechanism 502 is configured to be capable of conveying the film 70a onto which the liquid resin 13 has been discharged by the discharge module 1003 to a lower die 87 (see FIGS. 11 and 12) of a mold of a resin molding apparatus of the press module 1002, which will be described later. The second conveying mechanism 502 is further configured to be capable of conveying the film 70a discharged from the film module 1004 and not carrying the liquid resin 13, to the discharge module 1003.

[0015] <Discharge device> Fig. 2 shows a schematic partial cross-sectional view of an example of a discharge device provided in the discharge module 1003 shown in Fig. 1. As shown in Fig. 2, the discharge device 100 includes a metal tube 12 and a plurality of locking portions 16 as a cartridge holder configured to be able to hold a cartridge 10 having a cylindrical liquid resin storage portion 14 in which liquid resin 13 is stored, a plunger 20 configured to be able to move in the axial direction inside the liquid resin storage portion 14, and a discharge portion 110 configured to be able to discharge the liquid resin 13 inside the cartridge 10 to the outside.

[0016] <Cartridge holding section> The metal tube 12 as the cartridge holding part is configured to extend in the vertical direction in the discharge device 100. The metal tube 12 has a substantially cylindrical shape and includes an annular protrusion 12a protruding from the upper end of the side surface of the metal tube 12 to the outside of the metal tube 12, and an annular protrusion 12c protruding from the lower end of the side surface of the metal tube 12 to the inside of the metal tube 12. The annular protrusion 12a on the upper side of the metal tube 12 surrounds an opening 12b provided on the upper side of the metal tube 12. The annular protrusion 12c on the lower side of the metal tube 12 surrounds an opening 12d provided on the lower side of the metal tube 12. The upper opening 12b of the metal tube 12 is configured to allow the cartridge 10 to be inserted into the inside of the metal tube 12. The lower opening 12d of the metal tube 12 is configured to allow the lower end of the cartridge 10 to be ejected from the metal tube 12 to the outside. A handle (not shown) may be attached to one surface of the outside of the metal tube 12.

[0017] The multiple locking parts 16 are configured to be able to lock the metal tube 12. The multiple locking parts 16 are configured to extend in the vertical direction in the discharge device 100. The lower end of each of the multiple locking parts 16 forms a protruding part 16a that protrudes toward the side where the metal tube 12 is installed. An opening 16b for installing the metal tube 12 is provided between each of the protruding parts 16a of the multiple locking parts 16. Each of the multiple locking parts 16 is located outside the side surface of the metal tube 12. The multiple locking parts 16 are configured to be movable in the vertical direction and the horizontal direction by a driving mechanism (not shown). In this specification, the "vertical direction" means the vertical direction (sometimes called the "axial direction") of the paper surface of FIG. 2. In addition, in this specification, the "horizontal direction" means a direction perpendicular to the vertical direction of the paper surface of FIG. 2 and parallel to the paper surface of FIG. 2. The protruding part 16a of each of the multiple locking parts 16 is configured to be locked with the protruding part 12a of the metal tube 12. When the protrusions 16a of the multiple locking portions 16 are locked with the protrusions 12a of the metal tube 12, the upper surface of each of the protrusions 16a of the multiple locking portions 16 is in contact with the lower surface of the protrusions 12a of the metal tube 12. The protrusions 16a of the multiple locking portions 16 can prevent the metal tube 12 from moving downward.

[0018] <Plunger> The plunger 20 is located in a space surrounded by the multiple locking parts 16 so as not to come into contact with the multiple locking parts 16. The plunger 20 includes a plunger pressing part 22 and a plunger shaft part 21 attached to the plunger pressing part 22. The plunger pressing part 22 is configured in a columnar shape extending in the vertical direction. The corners of the lower end surface of the plunger pressing part 22 are chamfered so as to taper downward. The plunger shaft part 21 is configured in a columnar shape protruding upward from the center of the upper end surface of the plunger pressing part 22. The cross-sectional area of ​​the transverse section of the plunger shaft part 21 is smaller than the area of ​​the upper end surface of the plunger pressing part 22. In this specification, the "cross-sectional area of ​​the transverse section" means the cross-sectional area of ​​a section cut in the left-right direction. A part of the upper direction of the plunger shaft part 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 part 22 attached to the lower side of the plunger shaft part 21 in the vertical direction.

[0019] <Cartridge> The discharge device 100 having the above-described configuration is used by placing the cartridge 10 in the metal tube 12 locked by a plurality of locking portions 16. The cartridge 10 includes a substantially cylindrical liquid resin storage portion 14 configured to be fitted inside the metal tube 12, liquid resin 13 stored inside the liquid resin storage portion 14, and a lid 11 placed on the surface of the liquid resin 13. The cartridge 10 is configured so that the liquid resin 13 stored inside the liquid resin storage portion 14 can be discharged from the lower end of the cartridge 10.

[0020] The liquid resin storage part 14 may be made of plastic, for example. The liquid resin storage part 14 is, for example, a syringe. The liquid resin storage part 14 is substantially cylindrical and has a side surface extending in the vertical direction. When the cartridge 10 is placed in the metal tube 12, a part of the upper side of the liquid resin storage part 14 may protrude upward from the upper opening 12b of the metal tube 12. The liquid resin storage part 14 has an annular protrusion part 14b that protrudes from the upper end of the side surface of the liquid resin storage part 14 to the outside of the liquid resin storage part 14. An opening 14c is provided inside the liquid resin storage part 14 from the upper end of the side surface of the liquid resin storage part 14. The lower end of the liquid resin storage part 14 is configured to protrude downward from an opening 12d provided on the lower side of the metal tube 12. The lower end of the liquid resin storage part 14 corresponds to the lower end of the cartridge 10.

[0021] The lid 11 is configured to seal the liquid resin 13 so that the liquid resin 13 does not leak out of the liquid resin storage portion 14. The plunger pressing portion 22 of the plunger 20 is installed on the upper surface of the lid 11, and as the plunger pressing portion 22 moves downward, the plunger pressing portion 22 presses the liquid resin 13 through the lid 11, and the liquid resin 13 is discharged downward from the lower end portion of the cartridge 10. Note that when replacing the old cartridge 10 with a new cartridge 10, the following can be done. First, the old cartridge 10 is pulled out from the metal tube 12. Next, the new cartridge 10 is inserted into the inside of the metal tube 12.

[0022] <Discharge part> The discharge section 110 includes a nozzle 111 and a cylindrical elastic body 112 with a bottom that is detachably attached to the nozzle 111. The nozzle 111 includes a main body 111b that is configured to be able to accommodate at least a part of the liquid resin 13 discharged downward from the lower end of the cartridge 10, and a nozzle section 111a that is configured to allow the liquid resin 13 to pass through so as to extend below the main body 111b. The upper side of the main body 111b of the nozzle 111 is detachably attached to the lower end of the cartridge 10. The method of attaching and detaching the main body 111b of the nozzle 111 to the lower end of the cartridge 10 is not particularly limited. By attaching the upper side of the main body 111b of the nozzle 111 to the lower end of the cartridge 10, the liquid resin 13 discharged from the lower end of the cartridge 10 can be discharged from the nozzle section 111a of the nozzle 111. The cross-sectional area of ​​the transverse cross-section of the body portion 111b of the nozzle 111 can be made larger than the cross-sectional area of ​​the transverse cross-section of the nozzle portion 111a of the nozzle 111.

[0023] The bottomed cylindrical elastic body 112 has a side surface 112a extending in the axial direction, and a bottom surface 112b extending obliquely upward from the edge of the lower end of the side surface 112a of the elastic body 112 toward the upper end inside the elastic body 112 with respect to the side surface 112a. Due to the bottom surface 112b configured in this way, the elastic body 112 includes a recess 112d recessed in the opposite direction to the discharge direction 120 of the liquid resin 13. A slit 112c is provided in the recess 112d of the elastic body 112. An opening 112e is provided at the upper end opposite to the lower end of the side surface 112a of the elastic body 112. The opening 112e is configured so that the nozzle part 111a of the nozzle 111 can be inserted into the inside of the elastic body 112. In this specification, the "extrusion direction of liquid resin" means the direction in which liquid resin 13 moves when liquid resin 13 is extruded by extrusion section 110, and which direction is meant will be clear to a person skilled in the art even if liquid resin 13 is not actually extruded from extrusion section 110.

[0024] <Effects of the discharge device> Hereinafter, an example of the discharge operation of the discharge device 100 shown in FIG. 2 will be described with reference to FIGS. 3 to 6. FIG. 3 shows a schematic enlarged cross-sectional view of an example of the elastic body 112 before the liquid resin 13 is discharged. As shown in FIG. 3, before the liquid resin 13 is discharged, the bottom surface 112b of the elastic body 112 extends from the edge of the lower end of the side surface 112a of the elastic body 112 toward the inside of the elastic body 112 and obliquely upward to form a recess 112d. At this time, since the slit 112c of the bottom surface 112b of the elastic body 112 is closed, even if the liquid resin 13 leaks from the nozzle portion 111a into the inside of the elastic body 112, the liquid resin 13 can be prevented from leaking out from the slit 112c.

[0025] A mounting table 70 is disposed below elastic body 112. Film 70a conveyed from film module 1004 is placed on mounting table 70. A frame-shaped tray cover 71 is disposed on film 70a.

[0026] Fig. 4 shows a schematic plan view of an example of the bottom surface 112b of the elastic body 112 shown in Fig. 3. As shown in Fig. 4, the shape of the notch 112c provided in the recess 112d of the bottom surface 112b of the elastic body 112 is cross-shaped in a plan view of the bottom surface 112b of the elastic body 112. The bottom surface 112b of the elastic body 112 is continuous with the edge of the lower end of the side surface 112a of the elastic body 112 and is divided into multiple parts by the notches 112c.

[0027] 5 shows a schematic enlarged cross-sectional view of an example of the elastic body 112 when the liquid resin 13 is discharged. As described above, the plunger 20 moves downward by controlling the operation of the servo motor 40 shown in FIG. 2, and the plunger pressing part 22 presses the liquid resin 13 through the cover body 11, and the liquid resin 13 is discharged downward from the lower end of the cartridge 10. The liquid resin 13 discharged from the lower end of the cartridge 10 passes through the main body part 111b of the nozzle 111 and is discharged from the nozzle part 111a into the inside of the elastic body 112 surrounded by the side surface 112a of the elastic body 112. The liquid resin 13 discharged from the nozzle part 111a into the inside of the elastic body 112 flows in the discharge direction 120 of the liquid resin 13. 5 due to the pressure of liquid resin 13 flowing in discharge direction 120 of liquid resin 13, bottom surface 112b of elastic body 112 is deformed so as to extend downward by the elastic force of elastic body 112, for example as indicated by arrow 121 in Fig. 5, thereby forming discharge port 123 for liquid resin 13. As a result, liquid resin 13 is discharged through elastic body 112 onto film 70a placed on mounting table 70.

[0028] FIG. 6 shows a schematic enlarged cross-sectional view of an example of the elastic body 112 after the discharge of the liquid resin 13 is completed. When the discharge device 100 shown in FIG. 2 finishes the discharge of the liquid resin 13, the operation of the servo motor 40 is controlled to stop the downward movement of the plunger pressing part 22 and then move the plunger pressing part 22 upward. At this time, the pressure that the bottom surface 112b of the elastic body 112 receives from the liquid resin 13 decreases compared to when the liquid resin 13 was discharged. Therefore, the bottom surface 112b of the elastic body 112 is deformed upward by the elastic force of the elastic body 112, for example, as shown by the arrow 122 in FIG. 6, so as to return to the state before the discharge of the liquid resin 13 shown in FIG. 3, and closes the discharge port 123 of the elastic body 112. In the discharge device 100 of the embodiment, when the bottom surface 112b of the elastic body 112 is deformed upward due to the elastic force of the bottom surface 112b of the elastic body 112 after the discharge of the liquid resin 13 is completed, the discharge port 123 of the elastic body 112 can be closed while cutting off dripping of the liquid resin 13 from the bottom surface 112b of the elastic body 112. After the discharge port 123 of the elastic body 112 is closed, the discharge of the liquid resin 13 from the bottom surface 112 of the elastic body 112 stops.

[0029] As described above, in the discharge device 100 of the embodiment, the liquid resin 13 can be discharged from the discharge port 123 formed by the deformation of the bottom surface 112b of the elastic body 112 so as to extend downward due to the elastic force of the elastic body 112 due to the discharge pressure of the liquid resin 13 when discharging the liquid resin 13, and after the discharge of the liquid resin 13 is completed, the bottom surface 112b of the elastic body 112 is deformed so as to return upward due to the elastic force of the elastic body 112, thereby closing the discharge port 123, thereby suppressing the occurrence of dripping of the liquid resin 13. As a result, in the discharge device 100 of the embodiment, it is possible to control the discharge amount of the liquid resin with high precision and suppress the extension of the cycle time.

[0030] In the above, the case where the ejection part 110 is detachably attached to the cartridge 10 has been described, but in the ejection device 100 of the embodiment, the ejection part 110 may be detachably attached to the metal tube 12 serving as the cartridge holding part, or may be detachably attached to both the cartridge 10 and the metal tube 12.

[0031] In the above, the discharge device 100 of the embodiment is described as standing upright in the vertical direction, as shown in Fig. 2, but, for example, all members located above the opening 12d of the discharge device 100 in Fig. 2 may be inclined with respect to the vertical direction or may face completely to the left and right. In this case, the positional relationship of each member corresponds to the positional relationship when the discharge device 100 is assumed to be standing upright in the vertical direction.

[0032] <Another example of the discharge part> Hereinafter, with reference to Figs. 7 to 9, another example of the discharge part 110 of the discharge device 100 of the embodiment will be described. Fig. 7 shows a schematic partial cross-sectional view of another example of the discharge part 110 before discharging the liquid resin 13. The other example of the discharge part 110 shown in Fig. 7 includes a nozzle 111, an elastic body 112, and a bottomed tubular member 113. The bottomed tubular member 113 includes a side surface 113a extending in the vertical direction, and a bottom surface 113b extending obliquely upward from the edge of the lower end of the bottomed tubular member 113 toward the upper end inside the bottomed tubular member 113 with respect to the side surface 113a. A tip edge 113e, which is an end of the bottom surface 113b on the side opposite to the side surface 113a of the bottomed tubular member 113, is configured in an annular shape to form an opening 113d. Due to the bottom surface 113b having such a configuration, the bottomed cylindrical member 113 includes a recess 113c recessed in the opposite direction to the discharge direction 120 of the liquid resin 13.

[0033] In another example of the discharge part 110 shown in FIG. 7, an elastic body 112 is placed inside a bottomed tubular member 113. In this example, a side surface 112a of the elastic body 112 extends from a bottom surface 112b of the elastic body 112 toward the outside of the elastic body 112 in a diagonally downward direction with respect to the bottom surface 112b. In this example, a recess 112d that is recessed in a direction opposite to the discharge direction 120 of the liquid resin 13 is formed from the side surface 112a and the bottom surface 112b of the elastic body 112. In this example, the elastic body 112 is placed inside the bottomed tubular member 113 by placing the side surface 112a of the elastic body 112 on the bottom surface 113b of the bottomed tubular member 113. At this time, the bottom surface 112b and the slit 112c of the elastic body 112 are located on the opening 113e of the bottomed tubular member 113. Furthermore, the nozzle 111 is fitted and fixed inside the bottomed tubular member 113 with the nozzle portion 111a positioned on the bottom surface 112b and the notch 112c of the elastic body 112.

[0034] FIG. 8 shows a schematic partial cross-sectional view of another example of the discharge part 110 when the liquid resin 13 is discharged. As described above, the liquid resin 13 discharged from the lower end of the cartridge 10 by the downward movement of the plunger 20 shown in FIG. 2 passes through the main body part 111b of the nozzle 111 and is discharged from the nozzle part 111a onto the bottom surface 112b of the elastic body 112. The liquid resin 13 discharged from the nozzle part 111a onto the bottom surface 112b of the elastic body 112 flows in the discharge direction 120 of the liquid resin 13. Then, as shown by the arrow 121 in FIG. 8, the pressure of the liquid resin 13 flowing in the discharge direction 120 of the liquid resin 13 causes the bottom surface 112b of the elastic body 112 to deform so as to extend downward through the opening 113e due to the elastic force of the elastic body 112, forming a discharge port 123 for the liquid resin 13. As a result, the liquid resin 13 is discharged through the discharge port 123 of the elastic body 112 onto the film 70a placed on the mounting table 70. For ease of explanation, the mounting table 70 and the film 70a are not shown in FIG.

[0035] 9 shows a schematic enlarged cross-sectional view of an example of the elastic body 112 after the discharge of the liquid resin 13 is completed. As described above, when the discharge device 100 shown in FIG. 2 ends the discharge of the liquid resin 13, the plunger pressing part 22 is moved upward after the downward movement of the plunger pressing part 22 is stopped. At this time, the pressure that the bottom surface 112b of the elastic body 112 receives from the liquid resin 13 is reduced compared to when the liquid resin 13 is discharged. Therefore, the bottom surface 112b of the elastic body 112 is deformed by the elastic force of the elastic body 112 so as to extend upward as shown by the arrow 122 in FIG. 9, for example, so as to return to the state before the discharge of the liquid resin 13 shown in FIG. 7, and closes the discharge port 123. In this example as well, when the bottom surface 112b of the elastic body 112 deforms upward due to the elastic force after the discharge of the liquid resin 13 is completed, the discharge port 123 of the elastic body 112 can be closed while cutting off dripping of the liquid resin 13 from the bottom surface 112b of the elastic body 112. After the discharge port 123b of the elastic body 112 is closed, the discharge of the liquid resin 13 from the bottom surface 112 of the elastic body 112 stops. The rest of the explanation of the other example of the discharge part 110 is the same as that described above, and therefore will not be repeated here.

[0036] <Manufacturing method for resin molded products> FIG. 10 shows a flow chart of an example of a method for manufacturing a resin molded product according to an embodiment. The method for manufacturing a resin molded product according to an embodiment uses a manufacturing apparatus 1000 for a resin molded product shown in FIG. 1. As shown in FIG. 10, in the method for manufacturing a resin molded product according to an embodiment, first, the discharge device 100 discharges the liquid resin 13 onto the film 70a (step S101). Next, the first conveying mechanism 501 places the substrate 90 on the lower surface of the upper die 81 of the molding die (step S102). At this time, an electronic component is located on the lower surface of the substrate 90. Note that the step S102 may be performed before the step S101. The steps S101 and S102 may be performed simultaneously. The step S101 may be performed while the step S102 is being performed. The molding die includes an upper die 81 and a lower die 87.

[0037] After step S101 is performed, the second conveying mechanism 501 shown in FIG. 1 places the film 70a on which the liquid resin 13 is placed on the upper surface of the lower die 87 of the molding die (step S103). After step S103 is performed, the lower die 87 is moved upward toward the upper die 81 to clamp the upper die 81 and the lower die 87 (step S104). After clamping is performed by stopping the movement of the lower die 87, the temperature of the molding die is increased (step S105). After step S105 is performed, the liquid resin 13 waits until it hardens (step S106). After step S106 is performed, the lower die 87 is moved downward to open the die (step S107). As a result, a resin molded product in which the lower surface of the substrate 90 is sealed with resin is manufactured.

[0038] Step S101 is performed, for example, as follows. First, the second transport mechanism 502 transports the film 70a and the frame-shaped tray cover 71 arranged on the film 70a from the film module 1004 to the discharge module 1003. Next, the discharge device 100 of the discharge module 1003 discharges the liquid resin 13 from the discharge section 110 onto the film 70a in the tray cover 71. The discharge of the liquid resin 13 by the discharge device 100 is performed, for example, in the manner shown in FIGS. 3 to 6 or 7 to 9.

[0039] In step S102, for example, first transport mechanism 501 transports substrate 90 from substrate module 1001 to press module 1002 and places it on the lower surface of upper die 81 of the molding die of press module 1002.

[0040] In step S103, for example, the second transport mechanism 502 transports the film 70a on which the liquid resin 13 has been discharged from the discharge module 1003 together with the tray cover 71 to the press module 1002, and places the film 70a on which the liquid resin 13 is placed on the upper surface of the lower die 87 of the molding die of the press module 1002. The second transport mechanism 502 transports the tray cover 71 to the film module 1004 without placing the tray cover 71 in the press module 1002.

[0041] Fig. 11 shows a schematic cross-sectional view of an example of a resin molding apparatus after steps S101 to S103 are completed. In a resin molding apparatus 80 shown in Fig. 11, a block-shaped fixed platen 88 is supported by tie bars or a hold frame. An upper mold 81 is provided below the fixed platen 88. A plate-shaped movable platen 86 that moves up and down along the tie bars or the hold frame is provided below the fixed platen 88. A lower mold 87 is provided above the movable platen 86.

[0042] The lower die 87 includes 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 side of the bottom member 82 is 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 the lower die 87 is formed with a recess that is recessed downward. The second conveying mechanism 502 places the film 70a on the upper surface of the lower die 87 so that the liquid resin 13 on the film 70a is located on the bottom surface of the recess. The first conveying mechanism 501 places the substrate 90 on the lower surface of the upper die 81 as shown in FIG. 11.

[0043] FIG. 12 shows a schematic cross-sectional view of an example of a resin molding apparatus after step S104 is completed. In step S104, the mold clamping mechanism (not shown) moves the movable platen 86 shown in FIG. 11 upward. As a result, the lower mold 87 moves upward toward the upper mold 81. As the movable platen 86 moves upward, the frame-shaped side member 83 first comes into contact with the substrate 90 via the film 70a. After that, the upward movement of the movable platen 86 continues. As a result, the side member 82 moves upward while the upward movement of the side member 83 is stopped, and the multiple elastic members 84 contract. When the position of 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 step S104 is completed. After step S104 is completed, the temperature of the molding die is increased in step S105. The liquid resin 13 has thermosetting properties. Therefore, when the temperature of liquid resin 13 rises, liquid resin 13 hardens to become hardened resin 13a. In step S106, the process waits until liquid resin 13 hardens. After step S106 is performed, in step S107, base plate 85 is moved downward to move lower die 87 downward. This causes the die to open, and a resin molded product is manufactured in which the lower surface of substrate 90 is sealed with resin.

[0044] In the embodiment of the manufacturing method for a resin molded product, the above-mentioned extrusion device 100 provided in the manufacturing apparatus 1000 for manufacturing a resin molded product extrudes liquid resin 13, so that it is possible to control the amount of liquid resin extruded with high precision and to suppress the extension of the cycle time.

[0045] In the above, for example, as shown in Figures 11 and 12, a case has been described in which the discharge module 1003 of the manufacturing apparatus 1000 for resin molded products shown in Figure 1, which is equipped with a press module 1002 for manufacturing a resin molded product by placing a substrate 90 on an upper mold 81, is equipped with the discharge device 100 of the above embodiment. However, for example, the discharge module 1003 of the manufacturing apparatus 1000 for resin molded products shown in Figure 1, which is equipped with a press module 1002 for manufacturing a resin molded product by placing a substrate 90 on a lower mold 87, may be equipped with the discharge device 100 of the above embodiment.

[0046] <Additional Notes> (Disclosure 1) Disclosure 1 is an ejection device comprising: a cartridge holding portion configured to hold a cartridge having a cylindrical liquid resin storage portion in which liquid resin is stored; a plunger configured to be movable in the axial direction of the liquid resin storage portion inside the liquid resin storage portion; and an ejection portion configured to be able to eject the liquid resin, wherein the ejection portion includes an elastic body, the elastic body including a recess that is recessed in a direction opposite to the ejection direction of the liquid resin, the recess having a notch, and the liquid resin can be ejected through the ejection port of the elastic body by moving the plunger in the axial direction.

[0047] (Disclosure 2) Disclosure 2 is the ejection device according to Disclosure 1, wherein the ejection section is configured to be detachable from the cartridge holding section, the cartridge, or from both the cartridge holding section and the cartridge.

[0048] (Disclosure 3) Disclosure 3 is the discharge device described in Disclosure 1 or Disclosure 2, wherein the elastic body is cylindrical with a bottom, the elastic body has a side extending in the axial direction and a bottom surface located at a first end which is an end of the elastic body in the axial direction, a second end which is an end of the elastic body opposite the first end is open, and the bottom surface of the elastic body includes the recess.

[0049] (Disclosure 4) Disclosure 4 is the discharge device described in Disclosure 3, wherein the bottom surface of the elastic body extends obliquely relative to the side surface of the elastic body from an edge of the first end of the side surface toward the second end inside the elastic body.

[0050] (Disclosure 5) Disclosure 5 is the discharge device according to Disclosure 3 or Disclosure 4, wherein the bottom surface of the elastic body is configured to deform due to the pressure of the liquid resin when the liquid resin is discharged, thereby forming the discharge outlet.

[0051] (Disclosure 6) Disclosure 6 is an ejection device according to any one of Disclosures 3 to 5, wherein the ejection section further includes a nozzle section, and the opening is configured so that the nozzle section can be inserted into the interior of the elastic body.

[0052] (Disclosure 7) Disclosure 7 is the discharge device described in Disclosure 1 or Disclosure 2, wherein the discharge portion comprises a nozzle portion and a bottomed tubular member configured to be detachably attached to the nozzle portion, the bottomed tubular member has a side extending in the axial direction and a bottom surface located at a first end which is an end of the bottomed tubular member in the axial direction, a second end which is the end of the bottomed tubular member opposite the first end is open, and the bottom surface of the bottomed tubular member extends in an oblique direction relative to the side surface of the bottomed tubular member toward the second end inside the bottomed tubular member.

[0053] (Disclosure 8) Disclosure 8 is the discharge device described in Disclosure 7, wherein the tip edge of the bottom surface of the bottomed tubular member opposite the side on which the side of the bottomed tubular member is located is configured in a ring shape so as to form an opening.

[0054] (Disclosure 9) Disclosure 9 is the discharge device according to Disclosure 8, wherein the elastic body is configured such that the slit is positioned above the opening when the elastic body is placed in the bottomed tubular member.

[0055] (Disclosure 10) Disclosure 10 is the discharge device according to Disclosure 9, further comprising a bottom surface of the elastic body, and a side surface of the elastic body extending obliquely with respect to the bottom surface of the elastic body toward an outside of the elastic body.

[0056] (Disclosure 11) Disclosure 11 is the discharge device described in Disclosure 10, wherein the elastic body is configured to be placed inside the bottomed tubular member by placing the side surface of the elastic body on the bottom surface of the elastic body.

[0057] (Disclosure 12) Disclosure 12 is the discharge device described in Disclosure 11, wherein the elastic body is configured to deform due to the pressure of the liquid resin when the liquid resin is discharged so as to pass through the opening and form the discharge port.

[0058] (Disclosure 13) Disclosure 13 is an ejection device according to any one of Disclosures 7 to 12, wherein the ejection section further includes a nozzle, the nozzle includes a nozzle portion, and the nozzle is configured to be fitted into the bottomed tubular member with the nozzle portion positioned on the notch.

[0059] (Disclosure 14) Disclosure 14 is the discharge device according to any one of Disclosures 3 to 13, wherein the bottom surface of the elastic body is divided into a plurality of parts by the slits while being continuous with the side surface.

[0060] (Disclosure 15) Disclosure 15 is an ejection device according to any one of Disclosures 3 to 14, wherein the bottom surface of the elastic body is configured to close the ejection outlet of the elastic body by the elastic force of the elastic body when the ejection of the liquid resin is completed.

[0061] (Disclosure 16) Disclosure 16 is the discharge device according to any one of Disclosures 3 to 15, wherein the shape of the slit is a cross shape in a plan view of the bottom surface of the elastic body.

[0062] (Disclosure 17) Disclosure 17 is a manufacturing apparatus for a resin molded product, comprising: an ejection module equipped with an ejection device described in any one of Disclosures 1 to 16; and a press module equipped with an upper mold and a lower mold, wherein the press module is configured to be capable of manufacturing a resin molded product using the liquid resin ejected by the ejection device.

[0063] (Disclosure 18) Disclosure 18 is a method for manufacturing a resin molded product using the manufacturing apparatus for a resin molded product described in Disclosure 17, the method including a step of discharging the liquid resin by the discharging device, and a step of performing resin molding using the liquid resin discharged by the discharging device.

[0064] Although the embodiments have been described above, it is also planned from the beginning to combine the configurations of the above-described embodiments as appropriate.

[0065] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0066] 10 cartridge, 11 lid, 12 metal tube, 12a protrusion, 12b opening, 12b, 12c protrusion, 12d opening, 13 liquid resin, 13a cured resin, 14 liquid resin storage section, 14b protrusion, 14c opening, 16 multiple locking sections, 16a protrusion, 16b opening, 20 plunger, 21 plunger shaft, 22 plunger pressing section, 40 servo motor, 70 placement table, 70a film, 71 tray cover, 80 resin molding device, 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, 110 discharge section, 111 nozzle, 111a Nozzle portion, 111b main body portion, 112 elastic body, 112a side surface, 112b bottom surface, 112c notch, 112d recessed portion, 112e opening, 113 bottomed tubular member, 113a side surface, 113b bottom surface, 113c recessed portion, 113d opening, 113e tip edge, 120 liquid resin discharge direction, 121, 122 arrows, 123 discharge port, 501 first conveying mechanism, 502 second conveying mechanism, 1000 resin molded product manufacturing apparatus, 1001 substrate module, 1002 press module, 1003 discharge module, 1004 film module.

Claims

1. a cartridge holder configured to be able to hold a cartridge having a cylindrical liquid resin storage portion in which liquid resin is stored; a plunger configured to be movable in an axial direction of the liquid resin containing portion within the liquid resin containing portion; a discharge unit configured to be able to discharge the liquid resin, The discharge portion includes an elastic body, the elastic body includes a recess that is recessed in a direction opposite to a direction in which the liquid resin is discharged, The recess has a notch, the discharge device being configured so that the liquid resin can be discharged from the discharge port of the elastic body by the movement of the plunger in the axial direction.

2. The ejection device according to claim 1 , wherein the ejection portion is configured to be detachable from the cartridge holding portion, the cartridge, or from both the cartridge holding portion and the cartridge.

3. The elastic body is a cylindrical body with a bottom, The elastic body includes a side surface extending in the axial direction and a bottom surface located at a first end that is an end of the elastic body in the axial direction, A second end of the elastic body opposite to the first end is open, The discharge device according to claim 1 or 2, wherein the bottom surface of the elastic body includes the recess.

4. The discharge device according to claim 3 , wherein the bottom surface of the elastic body extends obliquely with respect to the side surface of the elastic body from an edge of the first end of the side surface toward the second end inside the elastic body.

5. 5. The ejection device according to claim 3, wherein the bottom surface of the elastic body is configured to deform due to the pressure of the liquid resin when the liquid resin is ejected, thereby forming the ejection port.

6. The discharge portion includes a nozzle portion and a bottomed tubular member configured to be detachably attached to the nozzle portion, the bottomed tubular member has a side surface extending in the first direction and the second direction, and a bottom surface located at a first end which is an end of the bottomed tubular member in the first direction, A second end of the bottomed tubular member opposite the first end is open, The discharge device according to claim 1 or 2, wherein the bottom surface of the bottomed tubular member extends obliquely with respect to the side surface of the bottomed tubular member toward the second end inside the bottomed tubular member.

7. 7. The discharge device according to claim 6, wherein a tip edge of the bottom surface of the bottomed tubular member opposite to a side on which the side surface of the bottomed tubular member is located is configured to be annular so as to form an opening.

8. The discharge device according to claim 7 , wherein the elastic body is configured to deform by a pressure of the liquid resin when the liquid resin is discharged so as to pass through the opening portion and form the discharge port.

9. A discharge module comprising the discharge device according to any one of claims 1 to 8; a press module having an upper die and a lower die; The press module is a resin molded product manufacturing apparatus configured to be capable of manufacturing a resin molded product using the liquid resin discharged by the discharge device.

10. A method for producing a resin molded product using the apparatus for producing a resin molded product according to claim 9, a step of the discharge device discharging the liquid resin; and performing resin molding using the liquid resin discharged by the discharge device.

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