Resin feeder, resin molded product manufacturing device, and resin molded product manufacturing method

Abstract

To obtain a resin feeder that can plan to improve the quality and productivity of resin molded products.SOLUTION: The resin feeder 100 has a housing 14 with a discharge portion 12a, a pressing portion 32 that is inserted into the housing 14, a pressing mechanism 30 that pushes the resin material 13 out of the discharge portion 12a by moving the pressing portion 32, a detection portion 50 that detects the weight of the resin material 13 supplied on the supply object 60, and an opening / closing mechanism 40 having chucks 42 and 43 configured to form an open state and a closed state, and assuming that the weight of the resin material 13 extruded from the discharge portion 12a and supplied onto the supplied object 60 as detected by the detection unit 50 is the detected weight, the control unit 70 stops the movement of the pressing portion 32 when the detected weight becomes equal to or more than the first predetermined value, and changes the chucks 42, 43 from the open state to the closed state when the detected weight becomes equal to or more than the second predetermined value after the movement of the pressing portion 32 is stopped.SELECTED DRAWING: Figure 16

Description

Technical Field

[0001] The present disclosure relates to a resin supply device, a resin molded product manufacturing device, and a resin molded product manufacturing method.

Background Art

[0002] As disclosed in Japanese Patent Application Laid-Open No. 2018-134846 (Patent Document 1), a resin supply device that supplies a resin material to a supply target is known. The device described in Patent Document 1 includes a syringe, a nozzle, a plunger, and a pinch valve. The pinch valve opens and closes the nozzle by sandwiching the nozzle. When the downward movement of the plunger stops and the pinch valve closes, the discharge of the liquid resin from the nozzle is stopped.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a resin supply device, when the movement of a pressing part (such as a plunger) stops inside a housing part (such as a syringe) that houses the resin, the resin in the housing part is no longer pressurized. Even after the movement of the pressing part stops, the resin material continues to be discharged from the discharge part (such as a nozzle) for some time. The phenomenon of continuing to be discharged from the discharge part after the movement of the pressing part stops is also referred to as "dripping" or the like.

[0005] In a resin supply device, a member called a chuck can be used. The chuck is arranged to contact the discharge part and open and close the internal space of the discharge part. The chuck is driven, for example, when dripping occurs, and transitions from the open state to the closed state to inhibit the resin material from continuing to be supplied to the supply target.

[0006] When the chuck is closed, a part of the resin material adhering to the internal space of the discharge portion is pushed out and supplied to the supply object. Further, the discharge of the resin material is promoted by the vertical movement of the resin supply device. These series of operations are also called "draining" or the like.

[0007] Bringing the weight of the resin material finally supplied to the supply object closer to a desired value leads to an improvement in the quality such as the dimensions and shape of the resin molded product. It takes time to accurately grasp the supply amount of the resin material due to dripping and draining and bring the weight of the resin material finally supplied to the supply object closer to the desired value. There is a need to shorten the time required for these and improve the productivity of the resin molded product.

[0008] The purpose of this specification is to disclose a resin supply device, a manufacturing device for a resin molded product, and a manufacturing method for a resin molded product that can attempt to improve the quality and productivity of the resin molded product.

Means for Solving the Problems

[0009] A resin supply device for supplying a resin material to a supply object includes a storage unit that stores the resin material and has a discharge unit for discharging the resin material, a pressing mechanism having a pressing unit inserted into the storage unit, and the resin material is extruded from the discharge unit by the movement of the pressing unit, a detection unit for detecting the weight of the resin material extruded from the discharge unit and supplied onto the supply object, a chuck configured to be able to form an open state and a closed state, allowing the resin material extruded from the discharge unit to reach the supply object in the open state of the chuck, and blocking the resin material extruded from the discharge unit from reaching the supply object in the closed state of the chuck, an opening / closing mechanism, and a control unit for controlling the movement of the pressing unit and the opening / closing operation of the chuck. When the weight of the resin material extruded from the discharge unit and supplied onto the supply object detected by the detection unit is defined as the detected weight, the control unit stops the movement of the pressing unit when the detected weight becomes equal to or greater than a first predetermined value, and changes the chuck from the open state to the closed state when the detected weight becomes equal to or greater than a second predetermined value after the movement of the pressing unit stops.

[0010] A manufacturing apparatus for resin molded products includes the above resin supply device. A method for manufacturing a resin molded product using the above manufacturing apparatus for resin molded products includes a step of the resin supply device supplying the resin material to a supply object, and a step of performing resin molding on the supply object using the resin material.

Advantages of the Invention

[0011] According to the matters disclosed in this specification, it is possible to obtain a resin supply device, a manufacturing apparatus for resin molded products, and a method for manufacturing resin molded products that are intended to improve the quality and productivity of resin molded products.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Embodiments for Carrying Out the Invention

[0013] Hereinafter, embodiments of the present disclosure will be described. In the embodiments described below, when referring to the number, amount, etc., unless otherwise specified, the scope of the present disclosure is not necessarily limited to that number, amount, etc. Each component is not necessarily essential for the present disclosure, unless otherwise specified. The same parts and corresponding parts are given the same reference numerals, and redundant descriptions may not be repeated.

[0014] [Manufacturing Apparatus 1000 for Resin Molded Products] FIG. 1 is a diagram showing the functional blocks of the manufacturing apparatus 1000 for resin molded products. FIG. 2 is a cross-sectional view showing the state before mold clamping of the molding section 80 provided in the manufacturing apparatus 1000 for resin molded products. FIG. 3 is a cross-sectional view showing the state after mold clamping of the molding section 80 provided in the manufacturing apparatus 1000 for resin molded products.

[0015] As shown in FIG. 1, the manufacturing apparatus 1000 for resin molded products includes a substrate module 101, a press module 102, a discharge module 103, and a film module 104. The substrate 90 (FIG. 2) is carried out from the substrate module 101, and the film 60 (FIG. 2) is carried out from the film module 104. The discharge module 103 supplies the thermosetting resin material 13 onto the film 60. The press module 102 performs resin molding on the substrate 90 using the liquid resin material 13 supplied onto the film 60 (FIG. 3).

[0016] In the resin molded product manufacturing apparatus 1000, a substrate module 101, a press module 102, a discharge module 103, and a film module 104 are each described as separate and distinct modules. Each module may be detachable from other modules, and the number of modules may be configured to be increased or decreased. For example, two or three discharge modules 103 may be arranged between the press module 102 and the film module 104.

[0017] The resin molded product manufacturing apparatus 1000 further includes transport mechanisms 91 and 92. The transport mechanism 91 transports the substrate 90 unloaded from the substrate module 101 onto the upper mold 81 (FIG. 2) of the mold in the molding section 80 (FIG. 2) of the press module 102. The transport mechanism 92 transports the film 60 onto which the resin material 13 has been discharged by the discharge module 103 onto the lower mold 87 (FIG. 2) of the mold in the molding section 80 of the press module 102. The transport mechanism 92 further transports the film 60 unloaded from the film module 104 and not carrying the resin material 13 to the discharge module 103.

[0018] [Method for manufacturing a resin molded product] FIG. 4 is a diagram showing a flowchart of a method for manufacturing a resin molded product using the resin molded product manufacturing apparatus 1000. FIG. 5 is a cross-sectional view showing a resin supply apparatus 100 provided in the resin molded product manufacturing apparatus 1000. Here, the method for manufacturing a resin molded product will be described, and the detailed configuration and operation of the resin supply apparatus 100 will be described later.

[0019] Referring to FIGS. 1 to 5, in the method for manufacturing a resin molded product, first, the resin supply apparatus 100 (FIG. 5) supplies the resin material 13 onto the film 60 (step S101). For example, the transport mechanism 92 transports the film 60 and the frame-shaped tray cover 54 (FIG. 5) arranged on the film 60 from the film module 104 to the discharge module 103.

[0020] Next, the resin supply device 100 of the ejection module 103 supplies the resin material 13 onto the film 60 within the tray cover 54. Details of this operation will be described later. Next, the conveyance mechanism 91 conveys the substrate 90 from the substrate module 101 to the press module 102 and places it on the lower surface of the upper mold 81 of the mold in the press module 102 (step S102).

[0021] The conveyance mechanism 91 places the film 60 onto which the resin material 13 has been supplied on the upper surface of the lower mold 87 (step S103). The conveyance mechanism 92 conveys the film 60 onto which the resin material 13 has been supplied from the ejection module 103 to the press module 102 together with the tray cover 54, and places the film 60 with the resin material 13 thereon on the upper surface of the lower mold 87 of the mold in the press module 102. The conveyance mechanism 92 conveys the tray cover 54 to the film module 104 without placing the tray cover 54 inside the press module 102.

[0022] As shown in FIG. 2, in the molding section 80, the block-shaped fixed platen 88 is supported by tie bars or a hold frame. The upper mold 81 is installed below the fixed platen 88. The movable platen 86 is disposed below the fixed platen 88. The lower mold 87 is installed above the movable platen 86.

[0023] The lower mold 87 includes a bottom member 82, side members 83, a plurality of elastic members 84, and a base plate 85. A recess that is recessed downward is formed in the lower mold 87. The conveyance mechanism 92 places the film 60 on the upper surface of the lower mold 87 such that the resin material 13 on the film 60 is positioned on the bottom surface of the recess. As shown in FIG. 2, the conveyance mechanism 91 places the substrate 90 on the lower surface of the upper mold 81.

[0024] The lower mold 87 is moved upward toward the upper mold 81 to clamp the upper mold 81 and the lower mold 87 (step S104). For example, a clamping mechanism (not shown) moves the movable platen 86 upward. As a result, the lower mold 87 moves upward toward the upper mold 81. When the movable platen 86 moves upward, first, the frame-shaped side member 83 contacts the substrate 90 via the film 60.

[0025] Thereafter, the upward movement of the movable platen 86 continues. With the upward movement of the side member 83 stopped, the bottom member 82 moves upward, and the plurality of 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 clamping in step S104 ends.

[0026] After the clamping is performed by stopping the movement of the lower mold 87, the temperature of the molding die is raised (step S105). The resin material 13 has thermosetting properties. Therefore, when the temperature of the resin material 13 rises, the resin material 13 cures to become a cured resin 18 (FIG. 3) (step S106). After waiting until the resin material 13 cures, the base plate 85 is moved downward to move the lower mold 87 downward. As a result, mold opening is performed, and a resin molded product in which the lower surface of the substrate 90 is sealed with resin is manufactured (step S107).

[0027] In the above, for example, as shown in FIGS. 2 and 3, the case where the discharge module 103 of the resin molded product manufacturing apparatus 1000 shown in FIG. 1 including the press module 102 for manufacturing a resin molded product by installing the substrate 90 on the upper mold 81 includes the resin supply apparatus 100 of the above-described embodiment has been described. However, for example, the discharge module 103 of the resin molded product manufacturing apparatus 1000 shown in FIG. 1 including the press module 102 for manufacturing a resin molded product by installing the substrate 90 on the lower mold 87 may include the resin supply apparatus 100 of the above-described embodiment.

[0028] [Resin supply apparatus 100] Referring to FIG. 5, the resin supply device 100 supplies the liquid resin material 13 to an object to be supplied such as the film 60. Specifically, the resin supply device 100 includes, for example, a cartridge 10, a holding mechanism 20, a pressing mechanism 30, an opening / closing mechanism 40, a detection unit 50, a mounting table 52, and a control unit 70.

[0029] (Cartridge 10) The cartridge 10 has a lid 11, a storage portion 12, and a resin material 13. The storage portion 12 stores the resin material 13, and the lid 11 is disposed on the surface of the resin material 13. The lid 11 seals the resin material 13 so that the resin material 13 does not leak out of the storage portion 12. The storage portion 12 of the cartridge 10 is disposed inside the cylindrical portion 23 of the holding mechanism 20 described later. A discharge portion 12a is provided at an end of the storage portion 12. The cartridge 10 discharges the resin material 13 through the discharge portion 12a.

[0030] (Detection unit 50) The mounting table 52 is disposed below the discharge portion 12a, and the film 60 conveyed from the film module 104 is placed on the mounting table 52. A frame-shaped tray cover 54 is disposed on the film 60. The resin material 13 is supplied inside the tray cover 54 on the film 60. The detection unit 50 is connected to the mounting table 52 and detects the weight of the resin material 13 extruded from the discharge portion 12a and supplied onto the film 60.

[0031] (Holding mechanism 20) The holding mechanism 20 has a peripheral wall 21, a locking member 22, and a cylindrical portion 23, and holds the cartridge 10. A plurality of locking members 22 are provided on the inner circumference of the peripheral wall 21, and the cylindrical portion 23 is locked to the plurality of locking members 22. The cartridge 10 is detachably installed inside the cylindrical portion 23.

[0032] (Pressing mechanism 30) The pressing mechanism 30 includes a servo motor 31 and a pressing portion 32. The pressing portion 32 is inserted inside the accommodating portion 12 of the cartridge 10 and is arranged to contact the lid 11. When the pressing portion 32 moves, the pressing portion 32 presses the resin material 13 through the lid 11, and the resin material 13 is extruded from the discharge portion 12a of the cartridge 10.

[0033] (Opening and closing mechanism 40, control unit 70) The opening and closing mechanism 40 includes a driving portion 41 and a pair of chucks 42, 43. The chucks 42, 43 are arranged to open and close the internal space of the discharge portion 12a. The chucks 42, 43 are configured to be able to form an open state and a closed state, and these states are switched by being driven by the driving portion 41. The discharge portion 12a has a structure to which a tube made of a flexible material is attached, and the chucks 42, 43 may press the tube.

[0034] The opening and closing mechanism 40 allows the resin material 13 extruded from the discharge portion 12a to reach the film 60 in the open state of the chucks 42, 43, and blocks the resin material 13 extruded from the discharge portion 12a from reaching the film 60 in the closed state of the chucks 42, 43. The control unit 70 is connected to the servo motor 31, the driving portion 41, and the detection portion 50, and can control the movement of the pressing portion 32 and the opening and closing operation of the chucks 42, 43 according to the value detected by the detection portion 50.

[0035] Here, prior to explaining the embodiments of the present disclosure in detail, a comparative example related to the embodiments will be described below.

[0036] [Comparative Example] FIG. 6 is a diagram showing a timing chart applied to the resin supply device in the comparative example. FIG. 7 is a flowchart showing each step of resin supply performed by the resin supply device in the comparative example. FIGS. 8 to 10 are cross-sectional views showing a state where the resin supply device 100R in the comparative example is performing resin supply.

[0037] The resin supply device 100R (Fig. 8) of the comparative example first reads the set values (predetermined weight and predetermined time) from a previously prepared reference table or the like at time t0 (Fig. 6) (step t101 in Fig. 7). At time t0, the chucks 42 and 43 form a closed state.

[0038] The set value of the "predetermined weight" mentioned here is a value set as follows. The weight of the resin material 13 extruded from the discharge part 12a and supplied onto the film 60 is detected as the detected weight by the detection part 50 and transmitted to the control part 70. When the pressing part 32 starts to move and resin is supplied onto the film 60, and when the weight of the resin supplied onto the film 60 reaches the predetermined weight, the movement of the pressing part 32 is stopped. The weight that becomes the threshold value for stopping the movement of the pressing part 32 is the "predetermined weight" mentioned here. Based on the past implementation status of resin supply, etc., the predetermined weight is appropriately set to a desired value.

[0039] Furthermore, the set value of the "predetermined time" mentioned here is a value set as follows. After the movement of the pressing part 32 stops, when the predetermined time has elapsed, the drive part 41 changes the chucks 42 and 43 from the open state to the closed state. After the movement of the pressing part 32 stops, until the drive part 41 changes the chucks 42 and 43 from the open state to the closed state (that is, during the predetermined time), the resin material 13 continues to be supplied onto the film 60 as dripping. The time from when the movement of the pressing part 32 stops until the drive part 41 changes the chucks 42 and 43 from the open state to the closed state is the "predetermined time" mentioned here. Based on the past implementation status of resin supply, etc., the predetermined time is appropriately set to a desired value.

[0040] At time t1 (Fig. 6), the movement of the pressing part 32 is started (step t102 in Fig. 7). The movement amount of the pressing part 32 (Fig. 6) gradually increases from the movement amount a1, and the resin material 13 is extruded from the discharge part 12a. When the resin material 13 has not reached the film 60, the weight w1 does not change. At time t2, the resin material 13 reaches the film 60 and the weight starts to increase (weight w2, weight w3).

[0041] At time t3 (Fig. 6), that is, when the detected weight by the detection unit 50 becomes equal to or greater than a predetermined weight (YES in step t103 of Fig. 7), the movement of the pressing unit 32 is stopped (step t104). The movement amount of the pressing unit 32 hardly increases from the movement amount a3. As shown in Fig. 9, even after the movement of the pressing unit 32 stops, the resin material 13 continues to be discharged as dripping from the discharge unit 12a, and the weight continues to increase (weight w3, weight w4).

[0042] Referring to Fig. 10, at time t4 (Fig. 6), that is, after the movement of the pressing unit 32 stops and a predetermined time has elapsed (YES in step t105 of Fig. 7), the drive unit 41 changes the chucks 42, 43 from the open state to the closed state (step t106). Even after the chucks 42, 43 are closed, the resin material 13 is supplied to the film 60 as drainage (the resin material continuously supplied to the film 60 due to the drainage phenomenon), and the weight continues to increase slightly (weight w4, weight w5). When the drainage stops, the resin supply is completed (time t5 in Fig. 6, step t107 in Fig. 7). If necessary, the next resin supply is executed for another film 60 (YES in step t108 of Fig. 7).

[0043] In the case of the above comparative example, the weight of the resin material 13 supplied onto the film 60 is brought close to a desired value by a predetermined weight and a predetermined time. Based on the past implementation status of the resin supply and the like, it is possible to optimize the predetermined time.

[0044] (Actions and effects of the comparative example) However, generally, since the compressibility of the liquid resin material varies depending on environmental conditions, it is difficult to completely correspond the movement amount of the pressing unit 32 to the discharge weight of the resin material 13. Also, even if the timing for stopping the pressing unit 32 is optimized according to the value of the predetermined weight and the timing for closing the chucks 42, 43 is optimized according to the value of the predetermined time, the weight of the resin material 13 supplied to the film 60 due to dripping and drainage is likely to vary due to factors such as the physical properties of the resin material.

[0045] Furthermore, increasing or decreasing the weight of the resin material finally supplied to the object to be supplied to approach a desired value by increasing or decreasing the "predetermined time" is likely to lead to an increase in the cycle time. That is, during the time when the pressing part 32 is not moving, dripping occurs, and this time is so-called standby time. Since the supply amount of the resin material 13 is small, it takes time to bring the supply amount of the resin material 13 close to the target weight. Furthermore, with the method of increasing or decreasing the "predetermined time", it is not always possible to control the weight of the resin material to reach the target value.

[0046] [Embodiment] In the resin supply device 100 of the embodiment, resin supply is performed as described below with respect to the above-described comparative example.

[0047] FIG. 11 is a diagram showing a timing chart applied to the resin supply device in the embodiment. FIG. 12 is a flowchart showing each step of resin supply performed by the resin supply device in the embodiment. FIGS. 13 to 16 are cross-sectional views showing a state in which the resin supply device 100 in the embodiment is performing resin supply.

[0048] The resin supply device 100 (FIG. 5) of the embodiment first reads set values (a first predetermined value and a second predetermined value) from a previously prepared reference table or the like at time T0 (FIG. 11) (step T101 in FIG. 12). At time T0, the chucks 42 and 43 form a closed state.

[0049] The set value of the "first predetermined value" mentioned here is a value set as follows. The weight of the resin material 13 extruded from the discharge part 12a and supplied onto the film 60 is detected as a detected weight by the detection part 50 and transmitted to the control part 70. When the pressing part 32 starts to move and resin supply is performed onto the film 60, and the weight of the resin supplied onto the film 60 reaches the first predetermined value, the movement of the pressing part 32 is stopped. The weight serving as the threshold value at which the movement of the pressing part 32 is stopped is the "first predetermined value" mentioned here. Based on the past implementation status of resin supply and the like, the first predetermined value is appropriately set to a desired value.

[0050] Furthermore, the set value of the "first predetermined value" mentioned here is a value set as follows. Even after the movement of the pressing part 32 stops, the resin material 13 continues to be supplied as dripping on the film 60. The weight of the resin material 13 supplied onto the film 60 is detected by the detection part 50 as the detected weight and transmitted to the control part 70. When the weight of the resin supplied onto the film 60 reaches the second predetermined value, the drive part 41 changes the chucks 42 and 43 from the open state to the closed state. The weight that becomes the threshold value for the drive part 41 to change the chucks 42 and 43 from the open state to the closed state is the "second predetermined value" mentioned here. Based on the past implementation status of resin supply and the like, the second predetermined value is appropriately set to a desired value.

[0051] At time T1 (FIG. 11), the movement of the pressing part 32 starts (step T102 in FIG. 12). The moving amount of the pressing part 32 (FIG. 11) gradually increases from the moving amount A1, and the resin material 13 is extruded from the discharge part 12a. When the resin material 13 has not reached the film 60, the weight W1 does not change. Since the discharge part 12a has not yet drawn a pattern on the film 60, the pattern path length does not increase (length D1). At the time of time T2, the resin material 13 reaches the film 60 and the weight starts to increase (weight W2, weight W4, weight W5). At the time of time T3, the discharge part 12a starts to draw a pattern on the film 60, and the pattern path length starts to increase (lengths D3, D4, D5, FIG. 13).

[0052] At time T5 (FIG. 11), that is, when the detected weight by the detection part 50 becomes equal to or more than the first predetermined value (YES in step T103 in FIG. 12), the movement of the pressing part 32 is stopped (step T104). At this time, the resin material 13 has reached the weight W5.

[0053] Here, in the present embodiment, before time T5, the pressing portion 32 is configured to perform the first movement M1 and the second movement M2. The first movement M1 starts at time T1, is changed from the first movement M1 to the second movement M2 at the time of time T4 (FIG. 11), and continues until time T5.

[0054] That is, the control unit 70 (FIG. 13) controls the pressing mechanism 30 so that the pressing portion 32 performs the first movement M1, and after the first movement M1, controls the pressing mechanism 30 so that the pressing portion 32 performs the second movement M2. The detection unit 50 detects the weight of the resin material 13 extruded from the discharge portion 14a and supplied onto the film 60 while at least the second movement M2 of the first movement M1 and the second movement M2 is being performed.

[0055] As for the timing of switching from the first movement M1 to the second movement M2, for example, the control unit 70 may cause the pressing portion 32 to perform the second movement M2 after the pressing portion 32 has moved a predetermined distance L1 (FIG. 11) by performing the first movement M1 (movement amount A4).

[0056] FIG. 13 shows a state in which the first movement M1 by the pressing portion 32 is being performed, and FIG. 14 shows a state in which the second movement M2 by the pressing portion 32 is being performed. Assuming that the weight of the resin material 13 supplied per unit time onto the film 60 extruded from the discharge portion 12a is the reference weight, the control unit 70 may control the pressing mechanism 30 so that the reference weight while the pressing portion 32 is performing the second movement M2 is smaller than the reference weight while the pressing portion 32 is performing the first movement M1. According to this configuration, the slope of the straight line between the weights W4 and W5 is smaller than the slope of the straight line between the weights W2 and W4.

[0057] At time T5 (FIG. 11), that is, when the detected weight by the detection unit 50 becomes equal to or greater than the first predetermined value (YES in step T103 of FIG. 12), the movement of the pressing unit 32 is stopped (step T104). At this point, the resin material 13 has reached the weight W5. The movement amount of the pressing unit 32 hardly increases from the movement amount A5. As shown in FIG. 15, even after the movement of the pressing unit 32 stops, the resin material 13 continues to be discharged as dripping from the discharge unit 12a, and the weight continues to increase (weight W5, weight W6).

[0058] Referring to FIG. 16, at the time of time T6 (FIG. 11), that is, when the detected weight by the detection unit 50 becomes equal to or greater than the second predetermined value (YES in step T105 of FIG. 12), the drive unit 41 changes the chucks 42, 43 from the open state to the closed state (step T106). Even after the chucks 42, 43 are closed, the resin material 13 is supplied to the film 60 as drainage (the resin material continuously supplied to the film 60 due to the drainage phenomenon), and the weight continues to increase slightly (weight W6, weight W7). When the drainage stops, the resin supply is completed (time T7 in FIG. 11, step T107 in FIG. 12).

[0059] As shown in step T108 of FIG. 12, the control unit 70 acquires the detected weight after the resin material 13 is no longer supplied onto the film 60 by changing the chucks 42, 43 from the open state to the closed state, and according to the difference WD (FIG. 11) between the acquired value and the target weight value set in advance, at least one of the first predetermined value and the second predetermined value is changed. The changed value is stored in the setting value table (FIG. 12). If necessary, the next resin supply is performed for another film 60 (YES in step T109 of FIG. 12).

[0060] (Operations and Effects of the Embodiment) In the case of the above-described embodiment, the weight of the resin material 13 supplied onto the film 60 is brought close to a desired value (target weight value) by the first predetermined value and the second predetermined value. That is, assuming that the weight of the resin material 13 extruded from the discharge unit 12a and supplied onto the film 60, which is detected by the detection unit 50, is the detected weight, the pressing unit 32 is moved while monitoring the detected weight in real time or at a predetermined time interval until the detected weight becomes equal to or greater than the first predetermined value.

[0061] As described in the explanation of the above comparative example, adjusting the weight of the resin material finally supplied to the supply object by increasing or decreasing the "predetermined time" to approach the desired value is likely to lead to an increase in the cycle time. In contrast, in the present embodiment, after the movement of the pressing unit 32 stops, the discharge weight due to dripping is also monitored. The detected weight is monitored in real time or at a predetermined time interval, and when the detected weight becomes equal to or greater than the second predetermined value after the movement of the pressing unit 32 stops, the chucks 42, 43 are changed from the open state to the closed state. According to these configurations, it is possible to suppress variations in the supply amount due to the physical properties of the resin material 13, improve the accuracy of the resin discharge weight, and shorten the time required for resin supply.

[0062] The control unit 70 acquires the detected weight after the resin material 13 is no longer supplied onto the film 60 due to the change of the chucks 42, 43 from the open state to the closed state, and changes at least one of the first predetermined value and the second predetermined value according to the difference between the acquired value and the target weight value set in advance. That is, by optimizing the first predetermined value and the second predetermined value based on the past implementation status of resin supply and the like, it is possible to control the discharge amount of the liquid resin with high precision and suppress the extension of the cycle time. As a result, it is possible to improve the quality and productivity of the resin molded product.

[0063] Also, in the present embodiment, when the weight of the resin material 13 extruded from the discharge part 12a and supplied onto the film 60 per unit time is defined as the reference weight, the control unit 70 may control the pressing mechanism 30 such that the reference weight while the pressing part 32 is performing the second movement M2 is smaller than the reference weight while the pressing part 32 is performing the first movement M1. According to this configuration, the slope of the straight line between the weights W4 and W5 is smaller than the slope of the straight line between the weights W2 and W4. According to this configuration, the pressure remaining in the storage part 12 after the movement of the pressing part 32 is stopped can be reduced (that is, the remaining pressure can be made closer to the atmospheric pressure), and the resin supply to be performed next can be started from a pressure closer to the atmospheric pressure. For example, it becomes easier to supply a desired amount of resin at the initial stage of the resin supply to be performed next.

[0064] (Regarding other configurations) When the target weight value becomes equal to or greater than the second predetermined value, the chuck closing operation is to be performed. By optimizing the second predetermined value, for example, the interval G2 between the times T6 and T7 shown in FIG. 11 is consequently changed. It is preferable to calculate an optimal value by automatic calculation and feedback it to the second predetermined value so that the error is minimized.

[0065] By changing the first predetermined value, the timing at which the movement of the pressing part 32 is stopped (the interval G4 between the times T5 and T7 shown in FIG. 11) is changed. In addition to optimizing the first predetermined value and the second predetermined value based on the past implementation status of the resin supply, etc., for example, the timing at which the pattern operation is started (the interval G1 between the times T2 and T3 shown in FIG. 11) may be adjusted. Alternatively, the operation speed of the pressing part 32 that moves the interval G3 shown in FIG. 11 when performing the second movement M2 may be adjusted.

[0066] Further, for example, if the time during which the pressing portion 32 performs the first movement M1 is defined as the first time C1 (FIG. 11), and the time during which the pressing portion 32 performs the second movement M2 is defined as the second time C2, the control unit 70 may control the pressing mechanism 30 such that the second time C2 is shorter than the first time C1.

[0067] Also, if the time from when the control unit 70 stops the movement of the pressing portion 32 until the control unit 70 changes the chucks 42, 43 from the open state to the closed state is defined as the third time C3 (FIG. 11), the control unit 70 may control the pressing mechanism 30 and / or the chucks 42, 43 such that the third time C3 is shorter than the second time C2.

[0068] As described above, the embodiments of the present disclosure have been explained. However, it should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present disclosure is indicated by the claims, and it is intended that all modifications within the meaning and scope equivalent to the claims are included.

Explanation of Reference Numerals

[0069] 10 Cartridge, 11 Lid, 12 Accommodating Portion, 12a, 14a Discharging Portion, 13 Resin Material, 18 Cured Resin, 20 Holding Mechanism, 21 Peripheral Wall, 22 Locking Member, 23 Cylindrical Portion, 30 Pressing Mechanism, 31 Servo Motor, 32 Pressing Portion, 40 Opening and Closing Mechanism, 41 Driving Portion, 42, 43 Chucks, 50 Detection Portion, 52 Mounting Table, 54 Tray Cover, 60 Film (Object to be Supplied), 70 Control Unit, 80 Molding Portion, 81 Upper Mold, 82 Bottom Face Member, 83 Side Face Member, 84 Elastic Member, 85 Base Plate, 86 Movable Platen, 87 Lower Mold, 88 Fixed Platen, 90 Substrate, 91, 92 Conveying Mechanism, 100, 100R Resin Supply Device, 101 Substrate Module, 102 Press Module, 103 Discharging Module, 104 Film Module, 1000 Manufacturing Apparatus for Resin Molded Product.

Claims

1. A resin supply device for supplying a resin material to a supply object, comprising: a storage part that stores the resin material and has a discharge part for discharging the resin material; a pressing mechanism having a pressing part inserted into the storage part, wherein the resin material is extruded from the discharge part by the movement of the pressing part; a detection part for detecting the weight of the resin material extruded from the discharge part and supplied onto the supply object; a chuck configured to be able to form an open state and a closed state, allowing the resin material extruded from the discharge part to reach the supply object in the open state of the chuck and blocking the resin material extruded from the discharge part from reaching the supply object in the closed state of the chuck, an opening / closing mechanism; a control part for controlling the movement of the pressing part and the opening / closing operation of the chuck; When the weight of the resin material extruded from the discharge part and supplied onto the supply object, detected by the detection part, is defined as the detected weight, the control part: stops the movement of the pressing part when the detected weight becomes equal to or greater than a first predetermined value; changes the chuck from the open state to the closed state when the detected weight becomes equal to or greater than a second predetermined value after the movement of the pressing part has stopped; A resin supply device.

2. The control part acquires the detected weight after the resin material is no longer supplied onto the supply object due to the change of the chuck from the open state to the closed state, and changes at least one of the first predetermined value and the second predetermined value according to the difference between the acquired value and a preset target weight value. The resin supply device according to Claim 1.

3. The control part controls the pressing mechanism to cause the pressing part to perform a first movement, and after the first movement, controls the pressing mechanism to cause the pressing part to perform a second movement. The detection part detects the weight of the resin material extruded from the discharge part and supplied onto the supply object during at least the second movement of the first movement and the second movement. The resin supply device according to Claim 1 or 2.

4. After the pressing part has moved a predetermined distance by performing the first movement, the control part causes the pressing part to perform the second movement. The resin supply device according to Claim 3.

5. When the weight of the resin material extruded from the discharge part and supplied onto the object to be supplied per unit time is defined as the reference weight, the control unit controls the pressing mechanism such that the reference weight while the pressing part is performing the second movement is smaller than the reference weight while the pressing part is performing the first movement. The resin supply device according to claim 3 or 4.

6. When the time for the pressing part to perform the first movement is defined as the first time, and the time for the pressing part to perform the second movement is defined as the second time, the control unit controls the pressing mechanism such that the second time is shorter than the first time. The resin supply device according to any one of claims 3 to 5.

7. When the time from when the control unit stops the movement of the pressing part to when the control unit changes the chuck from the open state to the closed state is defined as the third time, the control unit controls the pressing mechanism and / or the chuck such that the third time is shorter than the second time. The resin supply device according to claim 6.

8. Comprising the resin supply device according to any one of claims 1 to 7, A manufacturing device for resin molded products.

9. A method for manufacturing a resin molded product using the manufacturing device for a resin molded product according to claim 8, including a step of the resin supply device supplying the resin material to an object to be supplied, and a step of performing resin molding on the object to be supplied using the resin material. A method for manufacturing a resin molded product.

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