Resin supply apparatus, resin molding article manufacturing apparatus, and resin molding article manufacturing method

Abstract

A resin supply device is obtained that can improve the quality and production efficiency of resin molded products. The resin supply device (100) includes: a receiving part (12) having a dispensing part (12a); a pressing mechanism (30) having a pressing part (32) inserted into the receiving part (12) for extruding resin material (13) from the dispensing part (12a) by moving the pressing part (32); a detection part (50) for detecting the weight of the resin material (13) supplied to the supply object (60); and an opening and closing mechanism (40) having chucks (42, 43) that can form an open state and a closed state. The weight of the resin material (13) that is extruded from the dispensing part (12a) and supplied to the object to be supplied (60) and detected by the detection unit (50) is set as the detection weight. When the detection weight reaches or exceeds the first predetermined value, the control unit (70) stops the movement of the pressing part (32), and when the detection weight reaches or exceeds the second predetermined value after the pressing part (32) stops moving, the chuck (42,43) is changed from the open state to the closed state.

Description

Technical Field

[0001] The present invention relates to a resin supply device, a device for manufacturing a resin molded product, and a method for manufacturing a resin molded product. Prior Art

[0002] As disclosed in Japanese Unexamined Patent Publication No. 2018-134846 (Patent Document 1), there is known a resin supply device for supplying a resin material to a supply object. 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 pinching the nozzle. When the plunger stops descending, the pinch valve closes, thereby stopping the discharge of liquid resin from the nozzle. [Prior Technical Literature] [Patent Document]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-134846 Summary of the invention

[0004] [Problems to be solved by the present invention]

[0005] In a resin supply device, when a pressing part (such as a plunger) inside a storage part (such as a syringe) that stores resin material stops moving, the resin inside the storage part is no longer pressurized. Even after the pressing part stops moving, the resin material continues to be ejected from the ejection part (such as a nozzle) for a period of time. The phenomenon of continuous ejection from the ejection part after the pressing part stops moving is also called "liquid droplets".

[0006] In the resin supply device, a component called a chuck can be used. The chuck is configured to contact the discharge part and open and close the internal space of the discharge part. For example, when a droplet phenomenon occurs, the chuck is driven to change from an open state to a closed state to prevent the resin material from being continuously supplied to the supply object.

[0007] When the chuck is closed, part of the resin material adhering to the internal space of the discharge part is squeezed out and supplied to the supply object. In addition, the up and down movement of the resin supply device promotes the discharge of the resin material. This series of actions is also called "liquid flow".

[0008] Making the weight of the resin material finally supplied to the supply object close to the desired value helps improve the quality of the size and shape of the resin molded product. It takes time to accurately grasp the supply amount of the resin material caused by the droplets and the flow and make the weight of the resin material finally supplied to the supply object close to the desired value. There is a demand to shorten this time and improve the production efficiency of the resin molded product.

[0009] The purpose of the present invention is to describe a resin supply device, a manufacturing device for resin molded products, and a manufacturing method for resin molded products, which can contribute to improving the quality and production efficiency of resin molded products. [Technical means to solve the problem]

[0010] A resin supply device supplies resin material to a supply object, comprising: a receiving portion for receiving the resin material and having a discharging portion for discharging the resin material; a pressing mechanism having a pressing portion inserted into the receiving portion, and extruding the resin material from the discharging portion by moving the pressing portion; a detecting portion for detecting the weight of the resin material extruded from the discharging portion and supplied to the supply object; and an opening and closing mechanism having a chuck configured to form an open state and a closed state, wherein the resin material extruded from the discharging portion is allowed to reach the supply object in the open state of the chuck, and the resin material extruded from the discharging portion is allowed to reach the supply object in the closed state. The chuck is in the closed state, preventing the resin material extruded from the discharging portion from reaching the supply object; the control portion is used to control the movement of the pressing portion and the opening and closing action of the chuck; wherein the weight of the resin material extruded from the discharging portion and supplied to the supply object detected by the detection portion is set as the detection weight, the control portion stops the movement of the pressing portion when the detection weight reaches a first predetermined value or more, and after the pressing portion stops moving, when the detection weight reaches a second predetermined value or more, changes the chuck from the open state to the closed state.

[0011] A manufacturing device for resin molded products includes the above-mentioned resin supply device. A method for manufacturing a resin molded product using the aforementioned resin molded product manufacturing device comprises the following steps: the aforementioned resin supply device supplies the aforementioned resin material to a supply object; A step of resin-molding the supply object using the resin material. [Effects of the Invention]

[0012] According to the contents disclosed in this specification, a resin supply device, a manufacturing device for resin molded products, and a manufacturing method for resin molded products can be obtained, which can help improve the quality and production efficiency of resin molded products. Simple diagram description

[0013] FIG. 1 is a functional block diagram showing a manufacturing apparatus 1000 for a resin molded product. FIG. 2 is a cross-sectional view showing a state of a molding unit 80 included in the manufacturing apparatus 1000 for a resin molded product before mold closing. FIG. 3 is a cross-sectional view showing a state where the molding unit 80 included in the manufacturing apparatus 1000 for a resin molded product is closed. FIG. 4 is a flowchart showing 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 device 100 included in a manufacturing device 1000 for a resin molded product. FIG. 6 is a timing chart showing a resin supply device applied to a comparative example. FIG. 7 is a flowchart showing each step of resin supply performed by the resin supply device in the comparative example. FIG. 8 is a cross-sectional view showing a state in which the resin supply device 100R in the comparative example supplies resin. FIG. 9 is a cross-sectional view showing a state in which the resin supply device 100R in the comparative example supplies resin. FIG. 10 is a cross-sectional view showing a state in which a resin supply device 100R according to a comparative example supplies resin. FIG. 11 is a timing chart showing a resin supply device applicable to the embodiment. FIG. 12 is a flow chart showing the steps of resin supply performed by the resin supply device in the embodiment. FIG. 13 is a cross-sectional view showing a state (first movement M1 ) in which the resin supply device 100 in the embodiment supplies resin. FIG. 14 is a cross-sectional view showing a state (second movement M2 ) in which the resin supply device 100 supplies resin in the embodiment. FIG. 15 is a cross-sectional view showing a state (liquid droplets) of resin supply by the resin supply device 100 in the embodiment. FIG. 16 is a cross-sectional view showing a state in which the resin supply device 100 in the embodiment supplies resin (cuts off the liquid). Implementation

[0014] The following describes the embodiments of the present invention. In the embodiments described below, when the number, quantity, etc. are mentioned, unless otherwise specified, the scope of the present invention is not necessarily limited to the number, quantity, etc. Unless otherwise specified, each component is not necessarily essential to the present invention. The same parts and equivalent parts will be marked with the same reference number, and repeated descriptions may not be repeated.

[0015] [Manufacturing device 1000 for resin molded product] Fig. 1 is a functional block diagram showing a resin molded product manufacturing apparatus 1000. Fig. 2 is a cross-sectional view showing a molding unit 80 included in the resin molded product manufacturing apparatus 1000 before mold closing. Fig. 3 is a cross-sectional view showing a molding unit 80 included in the resin molded product manufacturing apparatus 1000 after mold closing.

[0016] As shown in FIG1 , a manufacturing device 1000 for a resin molded product includes a substrate module 101, a pressure module 102, a discharge module 103, and a film module 104. A substrate 90 ( FIG2 ) is fed from the substrate module 101, and a film 60 ( FIG2 ) is fed from the film module 104. The discharge module 103 supplies a thermosetting resin material 13 onto the film 60. The pressure module 102 performs resin molding on the substrate 90 using the liquid resin material 13 supplied onto the film 60 ( FIG3 ).

[0017] In the manufacturing device 1000 of the resin molded product, the substrate module 101, the pressure module 102, the ejection module 103 and the film module 104 are described as independent different modules. Each module can be detachable from other modules, or the number of modules can be increased or decreased. For example, two or three ejection modules 103 can be arranged between the pressure module 102 and the film module 104.

[0018] The manufacturing device 1000 of the resin molded product further includes conveying mechanisms 91 and 92. The conveying mechanism 91 conveys the substrate 90 sent out from the substrate module 101 to the upper mold 81 (FIG. 2) of the molding die of the molding section 80 (FIG. 2) of the pressure module 102. The conveying mechanism 92 conveys the film 60 on which the resin material 13 is ejected from the ejection module 103 to the lower mold 87 (FIG. 2) of the molding die of the molding section 80 of the pressure module 102. The conveying mechanism 92 also conveys the film 60 sent out from the film module 104 and not carrying the resin material 13 to the ejection module 103.

[0019] [Manufacturing method of resin molded product] Fig. 4 is a schematic diagram showing a flow chart 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 included in the resin molded product manufacturing apparatus 1000. The method for manufacturing a resin molded product will be described here, and the detailed structure and operation of the resin supply apparatus 100 will be described later.

[0020] 1 to 5 , in the method for manufacturing a resin molded product, first, the resin supply device 100 ( FIG. 5 ) supplies the resin material 13 onto the film 60 (step S101 ). For example, the conveying mechanism 92 conveys the film 60 and the frame-shaped tray cover 54 ( FIG. 5 ) disposed on the film 60 from the film module 104 to the discharge module 103 .

[0021] Next, the resin supply device 100 of the ejection module 103 supplies the resin material 13 onto the film 60 in the tray cover 54. The details of this operation will be described later. Then, the conveying mechanism 91 conveys the substrate 90 from the substrate module 101 to the pressure module 102 and sets it on the lower surface of the upper mold 81 of the molding die of the pressure module 102 (step S102).

[0022] The conveying mechanism 91 sets the film 60 supplied with the resin material 13 on the upper surface of the lower mold 87 (step S103). The conveying mechanism 92 conveys the film 60 supplied with the resin material 13 in the ejection module 103 together with the tray cover 54 to the pressure module 102, and sets the film 60 carrying the resin material 13 on the upper surface of the lower mold 87 of the molding die of the pressure module 102. The conveying mechanism 92 does not set the tray cover 54 in the pressure module 102, but conveys the tray cover 54 to the film module 104.

[0023] As shown in FIG2 , in the forming section 80 , a block-shaped fixed platform 88 is supported by a tie rod or a support frame. An upper mold 81 is provided on the lower side of the fixed platform 88 . A movable platform 86 is provided on the lower side of the fixed platform 88 . A lower mold 87 is provided on the upper side of the movable platform 86 .

[0024] The lower mold 87 includes a bottom surface component 82, a side component 83, a plurality of elastic components 84, and a bottom plate 85. A concave portion is formed on the lower side of the lower mold 87. The conveying mechanism 92 sets the film 60 on the upper surface of the lower mold 87 so that the resin material 13 on the film 60 is located on the bottom surface of the concave portion. As shown in FIG. 2 , the conveying mechanism 91 sets the substrate 90 on the lower surface of the upper mold 81.

[0025] The upper mold 81 and the lower mold 87 are closed by moving the lower mold 87 upward toward the upper mold 81 (step S104). For example, the mold closing mechanism (not shown) moves the movable platform 86 upward. Thereby, the lower mold 87 moves upward toward the upper mold 81. As the movable platform 86 moves upward, first, the frame-shaped side member 83 contacts the substrate 90 through the film 60.

[0026] After that, the movable platform continues to move upward. When the side parts stop moving upward, the bottom parts move upward, and the multiple elastic parts are compressed. When the upper surface position of the side parts reaches the preset position, the upward movement of the movable platform stops, and the mold closing of step S104 ends.

[0027] After the lower mold 87 stops moving and the mold is closed, the temperature of the molding mold is increased (step S105). The resin material 13 has a thermosetting property. Therefore, when the temperature of the resin material 13 rises, the resin material 13 hardens and becomes a hardened resin 18 (FIG. 3) (step S106). After the resin material 13 is hardened, the lower mold 87 is moved downward by moving the bottom plate 85 downward. In this way, the mold is opened to manufacture a resin molded product whose lower surface is sealed with resin (step S107).

[0028] In the above content, as shown in Figures 2 and 3, the case where the ejection module 103 of the resin molded product manufacturing device 1000 shown in Figure 1, which has a pressure module 102 in which the substrate 90 is set on the upper mold 81 to manufacture the resin molded product, is equipped with the resin supply device 100 of the above embodiment is described. It can also be that the ejection module 103 of the resin molded product manufacturing device 1000 shown in Figure 1, which has a pressure module 102 in which the substrate 90 is set on the lower mold 87 to manufacture the resin molded product, is equipped with the resin supply device 100 of the above embodiment.

[0029] [Resin supply device 100] 5 , the resin supply device 100 supplies the liquid resin material 13 onto a supply object such as a film 60. Specifically, the resin supply device 100 includes, for example, an ink cartridge 10, a holding mechanism 20, a pressing mechanism 30, an opening and closing mechanism 40, a detection unit 50, a mounting table 52, and a control unit 70.

[0030] (Ink cartridge 10) The ink cartridge 10 includes a cover 11, a receiving portion 12, and a resin material 13. The receiving portion 12 receives the resin material 13, and the cover 11 is disposed on the surface of the resin material 13. The cover 11 seals the resin material 13 to prevent the resin material 13 from leaking out of the receiving portion 12. The receiving portion 12 of the ink cartridge 10 is disposed inside a cylindrical portion 23 of a holding mechanism 20 described later. A discharge portion 12a is provided at an end of the receiving portion 12. The ink cartridge 10 discharges the resin material 13 through the discharge portion 12a.

[0031] (Detection Unit 50) A mounting table 52 is arranged below the discharge portion 12a, and the film 60 fed from the film module 104 is placed on the mounting table 52. A frame-shaped tray cover 54 is arranged on the film 60. The resin material 13 is supplied to the inner side of the tray cover 54 on the film 60. The detection unit 50 is connected to the mounting table 52 and is used to detect the weight of the resin material 13 extruded from the discharge portion 12a and supplied to the film 60.

[0032] (Retaining mechanism 20) The holding mechanism 20 has a peripheral wall 21, a locking member 22 and a cylindrical portion 23, and is used to hold the ink cartridge 10. A plurality of locking members 22 are provided on the inner periphery of the peripheral wall 21, and the cylindrical portion 23 is locked with the plurality of locking members 22. The ink cartridge 10 is detachably disposed inside the cylindrical portion 23.

[0033] (Pressing mechanism 30) The pressing mechanism 30 includes a servo motor 31 and a pressing portion 32. The pressing portion 32 is inserted into the inner side of the receiving portion 12 of the ink cartridge 10 and is arranged to contact the cover 11. As the pressing portion 32 moves, the pressing portion 32 presses the resin material 13 through the cover 11, so that the resin material 13 is extruded from the discharge portion 12a of the ink cartridge 10.

[0034] (Opening and Closing Mechanism 40, Control Unit 70) The opening and closing mechanism 40 has a driving unit 41 and a pair of chucks 42 and 43. The chucks 42 and 43 are configured to open and close the internal space of the discharge unit 12a. The chucks 42 and 43 are constructed to be able to form an open state and a closed state, and these states are switched by the driving of the driving unit 41. The discharge unit 12a may also be a structure in which a soft material tube is installed, and the chucks 42 and 43 may also press the tube.

[0035] The opening and closing mechanism 40 allows the resin material 13 extruded from the discharge portion 12a to reach the film 60 when the chucks 42 and 43 are in the open state, and prevents the resin material 13 extruded from the discharge portion 12a from reaching the film 60 when the chucks 42 and 43 are in the closed state. The control unit 70 is connected to the servo motor 31, the drive unit 41, and the detection unit 50, and can control the movement of the pressing unit 32 and the opening and closing actions of the chucks 42 and 43 according to the value detected by the detection unit 50.

[0036] Here, before describing the embodiments of the present invention in detail, comparative examples related to the embodiments are described below.

[0037] [Comparative Example] Fig. 6 is a timing chart applicable to the resin supply device of the comparative example. Fig. 7 is a flow chart showing the resin supply steps performed by the resin supply device of the comparative example. Fig. 8 to Fig. 10 are cross-sectional views showing the resin supply device 100R of the comparative example when performing resin supply.

[0038] The resin supply device 100R of the comparative example (FIG. 8) first reads the set value (predetermined weight and predetermined time) from a pre-prepared reference table at time t0 (FIG. 6) (step t101 of FIG. 7). At time t0, the chucks 42 and 43 are in a closed state.

[0039] The "predetermined weight" setting value mentioned here is a value set as follows. The weight of the resin material 13 extruded from the discharge portion 12a and supplied to the film 60 is detected by the detection portion 50 and transmitted to the control portion 70 as the detection weight. When the pressing portion 32 starts to move and supplies resin to the film 60, and the weight of the resin supplied to the film 60 reaches the predetermined weight, the movement of the pressing portion 32 stops. The threshold weight at which the pressing portion 32 stops moving is the "predetermined weight" mentioned here. The predetermined weight is appropriately set to a desired value based on the past implementation of resin supply, etc.

[0040] In addition, the "predetermined time" setting value mentioned here is a value set as follows. After the pressing part 32 stops moving, at a point after a predetermined time has passed, the driving part 41 changes the chucks 42, 43 from the open state to the closed state. After the pressing part 32 stops moving, until the driving part 41 changes the chucks 42, 43 from the open state to the closed state during this period (i.e., the predetermined time), the resin material 13 is continuously supplied to the film 60 in the form of droplets. The period from when the pressing part 32 stops moving to when the driving part 41 changes the chucks 42, 43 from the open state to the closed state is the "predetermined time" mentioned here. The predetermined time is appropriately set to a desired value based on the past implementation of resin supply, etc.

[0041] At time t1 (Fig. 6), the pressing part starts to move (step t102 in Fig. 7). The movement amount of the pressing part (Fig. 6) gradually increases from the movement amount a1, and the resin material is extruded from the discharge part. When the resin material has not yet reached the film, the weight w1 does not change. At time t2, the resin material reaches the film, and the weight starts to increase (weight w2, weight w3).

[0042] At time t3 (FIG. 6), that is, when the weight detected by the detection unit reaches or exceeds the predetermined weight (step t103 in FIG. 7 is YES), the movement of the pressing unit stops (step t104). The movement amount of the pressing unit hardly increases from the movement amount a3. As shown in FIG. 9, even after the pressing unit stops moving, the resin material continues to be discharged from the discharging unit in the form of droplets, and the weight continues to increase (weight w3, weight w4).

[0043] Referring to FIG10 , at time t4 (FIG. 6), that is, when a predetermined time has passed after the pressing part stops moving (step t105 of FIG7 is YES), the driving part changes the chuck from the open state to the closed state (step t106). Even after the chuck is closed, the resin material is still supplied to the film in the form of a liquid flow (resin material that is continuously supplied to the film due to the liquid flow phenomenon), and the weight continues to increase slightly (weight w4, weight w5). When the liquid flow stops, the resin supply is completed (time t5 of FIG6, step t107 of FIG7). If necessary, the next resin supply is performed on another film (step t108 of FIG7 is YES).

[0044] In the case of the above comparative example, the weight of the resin material supplied to the film is made close to the desired value by the predetermined weight and the predetermined time. The predetermined time can be optimized based on the implementation status of the resin supply in the past.

[0045] (Function and Effect of Comparative Example) However, in general, the compressibility of liquid resin material varies depending on environmental conditions, so it is difficult to completely match the movement amount of the pressing part to the discharge weight of the resin material. In addition, even if the timing of stopping the pressing part is optimized according to the value of the predetermined weight, and the timing of closing the chuck is optimized according to the value of the predetermined time, the weight of the resin material supplied to the film due to droplets and liquid flow is easily varied due to factors such as the physical properties of the resin material.

[0046] In addition, increasing or decreasing the "predetermined time" to make the weight of the resin material finally supplied to the supply object close to the expected value can easily lead to a longer cycle time. In other words, when the pressing part does not move, although droplets will occur, this period of time is actually a standby time. Since the supply amount of the resin material 13 is small, it takes a long time to make the supply amount of the resin material 13 close to the target weight. Furthermore, the method of increasing or decreasing the "predetermined time" does not necessarily control the weight of the resin material to the target value.

[0047] [Implementation form] With respect to the above-mentioned comparative example, in the resin supply device of the embodiment, the resin supply is performed as follows.

[0048] Fig. 11 is a timing chart applicable to the resin supply device in the embodiment. Fig. 12 is a flow chart showing the steps of resin supply performed by the resin supply device in the embodiment. Fig. 13 to Fig. 16 are cross-sectional views showing the resin supply performed by the resin supply device 100 in the embodiment.

[0049] The resin supply device 100 (FIG. 5) of the embodiment first reads the set value (first predetermined value and second predetermined value) from a pre-prepared reference table at time T0 (FIG. 11) (step T101 of FIG. 12). At time T0, the chuck is in a closed state.

[0050] 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 portion 12a and supplied to the film 60 is detected by the detection portion 50 and transmitted to the control portion 70 as the detected weight. When the pressing portion 32 starts to move and supplies the resin to the film 60, and the weight of the resin supplied to the film 60 reaches the first predetermined value, the movement of the pressing portion 32 stops. The threshold weight for stopping the movement of the pressing portion 32 is the "first predetermined value" mentioned here. The first predetermined value is appropriately set to a desired value based on the past implementation of the resin supply, etc.

[0051] In addition, the setting value of the "second predetermined value" mentioned here is a value set as follows. Even after the pressing part 32 stops moving, the resin material 13 is continuously supplied to the film 60 in the form of droplets. The weight of the resin material 13 supplied to the film 60 is detected by the detection part 50 and transmitted to the control part 70 as the detection weight. When the weight of the resin supplied to the film 60 reaches the second predetermined value, the driving part 41 changes the chucks 42 and 43 from the open state to the closed state. The threshold weight for the driving part 41 to change the chucks 42 and 43 from the open state to the closed state is the "second predetermined value" mentioned here. The second predetermined value is appropriately set to a desired value based on the past implementation of the resin supply, etc.

[0052] At time T1 (FIG. 11), the pressing part 32 starts to move (step T102 of FIG. 12). The movement amount of the pressing part 32 (FIG. 11) 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 yet 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 time T2, the resin material 13 reaches the film 60, and the weight starts to increase (weight W2, weight W4, weight W5). At time T3, the discharge part 12a starts to draw a pattern on the film 60, and the pattern path length starts to increase (length D3, length D4, length D5, FIG. 13).

[0053] At time T5 (FIG. 11), that is, when the weight detected by the detection unit 50 reaches a first predetermined value or more (step T103 of FIG. 12 is YES), the movement of the pressing unit 32 is stopped (step T104). At this time, the weight of the resin material 13 has reached W5.

[0054] Here, in this embodiment, before time T5, the pressing part 32 is configured to perform the first movement M1 and the second movement M2. The first movement M1 starts at time T1, changes to the second movement M2 at time T4 (FIG. 11), and continues until time T5.

[0055] In other words, the control unit 70 ( FIG. 13 ) controls the pressing mechanism 30 to make the pressing unit 32 perform the first movement M1, and after the first movement M1, controls the pressing mechanism 30 to make the pressing unit 32 perform the second movement M2. The detection unit 50 detects the weight of the resin material 13 extruded from the discharge unit 12a and supplied to the film 60 during at least the second movement M2 of the first movement M1 and the second movement M2.

[0056] The timing for switching from the first movement M1 to the second movement M2 is, for example, that the control unit 70 may make the pressing unit 32 perform the second movement M2 after the pressing unit 32 performs the first movement M1 and moves a preset distance L1 ( FIG. 11 ) (movement amount A4 ).

[0057] FIG. 13 shows a case where the pressing part 32 performs the first movement M1, and FIG. 14 shows a case where the pressing part 32 performs the second movement M2. With the weight per unit time of the resin material extruded from the discharge part 12a and supplied to the film 60 as the reference weight, the control part 70 can control the pressing mechanism 30 so that the reference weight during the second movement M2 of the pressing part 32 is smaller than the reference weight during the first movement M1 of the pressing part 32. With this structure, 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.

[0058] At time T5 (FIG. 11), that is, when the weight detected by the detection unit 50 reaches or exceeds the first predetermined value (step T103 of FIG. 12 is YES), the movement of the pressing unit 32 is stopped (step T104). At this time, the weight of the resin material 13 has reached W5. The movement amount of the pressing unit 32 hardly increases from the movement amount A5. As shown in FIG. 15, even after the pressing unit 32 stops moving, the resin material 13 continues to be discharged from the discharging unit 12a in the form of droplets, and the weight continues to increase (weight W5, weight W6).

[0059] Referring to FIG. 16 , at time T6 (FIG. 11 ), that is, when the weight detected by the detection unit 50 reaches or exceeds the second predetermined value (step T105 of FIG. 12 is YES), the drive unit 41 changes the chucks 42 and 43 from the open state to the closed state (step T106). Even after the chucks 42 and 43 are closed, the resin material 13 is still supplied to the film 60 in the form of a liquid flow (resin material that is continuously supplied to the film 60 due to the liquid flow phenomenon), and the weight continues to increase slightly (weight W6, weight W7). When the liquid flow stops, the resin supply is completed (time T7 of FIG. 11 , step T107 of FIG. 12 ).

[0060] As shown in step T108 of FIG. 12 , after the chucks 42 and 43 are changed from the open state to the closed state and the resin material 13 stops being supplied to the film 60, the control unit 70 obtains the detected weight and changes at least one of the first predetermined value and the second predetermined value according to the difference WD ( FIG. 11 ) between the obtained value and the preset target weight value. The changed value is memorized in the set value table ( FIG. 12 ). If necessary, the next resin supply is performed on another film 60 (step T109 of FIG. 12 is YES).

[0061] (Functions and Effects of Implementation) In the above-mentioned embodiment, the weight of the resin material 13 supplied to the film 60 is adjusted to a value close to the desired value (target weight value) by the first predetermined value and the second predetermined value. That is, the weight of the resin material 13 extruded from the discharge portion 12a and supplied to the film 60 detected by the detection portion 50 is used as the detection weight, and while the detection weight is monitored in real time or at fixed time intervals, the pressing portion 32 is continuously moved until the detection weight reaches or exceeds the first predetermined value.

[0062] As described in the above comparative example, by increasing or decreasing the "predetermined time" to make the weight of the resin material finally supplied to the supply object close to the expected value, it is easy to cause the cycle time to be extended. In contrast, in this embodiment, after the pressing part 32 stops moving, the weight discharged due to the droplets is also monitored. The detection weight is monitored immediately or at fixed time intervals. When the detection weight reaches more than the second predetermined value after the pressing part 32 stops moving, the chucks 42 and 43 are changed from the open state to the closed state. With these structures, the variation of the supply amount caused by the physical properties of the resin material 13 can be suppressed, which can not only improve the accuracy of the resin discharge weight, but also shorten the time required for resin supply.

[0063] After the chucks 42 and 43 are changed from the open state to the closed state, when the resin material 13 is no longer supplied to the film 60, the control unit 70 obtains the detected weight, and changes at least one of the first predetermined value and the second predetermined value according to the difference between the obtained value and the preset target weight value. That is, by optimizing the first predetermined value and the second predetermined value based on the past implementation status of the resin supply, not only can the discharge amount of the liquid resin be controlled with high precision, but also the extension of the cycle time can be suppressed, thereby possibly improving the quality and production efficiency of the resin molded product.

[0064] Furthermore, in the present embodiment, if the weight per unit time of the resin material 13 extruded from the discharge portion 12a and supplied to the film 60 is taken as the reference weight, the control portion 70 can control the pressing mechanism 30 so that the reference weight during the second movement M2 of the pressing portion 32 is smaller than the reference weight during the first movement M1. With 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. This configuration can reduce the residual pressure in the receiving portion 12 after the pressing portion 32 stops moving (that is, the residual pressure can be made closer to the atmospheric pressure), so that the next resin supply can be started from a pressure closer to the atmospheric pressure, for example, it can be easier to supply the required amount of resin in the initial stage of the next resin supply.

[0065] (About other components) For the target weight value, when it reaches or exceeds the second predetermined value, the chuck closing action will be performed. By optimizing the second predetermined value, for example, the interval G2 between time T6 and T7 shown in Figure 11 can be changed. It is best to obtain the optimal value through automatic calculation and feed it back to the second predetermined value to minimize the error.

[0066] By changing the first predetermined value, the timing of stopping the movement of the pressing part 32 (interval G4 between time T5 and T7 shown in FIG. 11) can be changed. In addition to optimizing the first predetermined value and the second predetermined value based on the past implementation of the resin supply, the timing of starting the pattern action (interval G1 between time T2 and T3 shown in FIG. 11) can also be adjusted. Alternatively, the movement speed of the pressing part 32 during the second movement M2, that is, during the interval G3 shown in FIG. 11, can also be adjusted.

[0067] In addition, for example, the time for the pressing part 32 to perform the first movement M1 is set to the first time C1 (Figure 11), and the time for the pressing part 32 to perform the second movement M2 is set to the second time C2. The control unit 70 can control the pressing mechanism 30 so that the second time C2 is shorter than the first time C1.

[0068] In addition, the time from when the control unit 70 stops the movement of the pressing unit 32 to when the control unit 70 changes the chucks 42, 43 from the open state to the closed state is set as the third time C3 (Figure 11). The control unit 70 can control the pressing mechanism 30 and / or the chucks 42, 43 so that the third time C3 is shorter than the second time C2.

[0069] The above describes the embodiments of the present invention, but it should be understood that the embodiments disclosed herein are exemplary in all aspects and not restrictive. The scope of the present invention is defined by the scope of the invention application, and is intended to include all changes within the equivalent meaning and scope of the scope of the application.

[0070] 10: Ink cartridge 11: Cover 12: Containment 12a: Discharge section 13: Resin material 18: Hardening resin 20: Maintaining the organization 21: Peripheral wall 22: Locking parts 30: Pressing mechanism 31:Servo motor 32: Pressing part 40: Opening and closing mechanism 41: Driving unit 42,43: Chuck 50: Inspection Department 52: Loading table 54: Tray cover 60: Film (supply object) 70: Control Department 80: Forming section 82: Bottom part 83: Side parts 84: Elastic component 85: Bottom plate 86: Movable Platform 87: Lower die 88: Fixed platform 90:Substrate 91, 92: Transport mechanism 100, 100R: Resin supply device 101: Substrate module 102: Pressure module 103:Spit out module 104: Film module 1000: Manufacturing device A1, a1, a3, A4, A5: Movement amount G1, G2, G3, G4: Interval L1: Distance M1, M2: Mobile S101, T101, t101, S102, T102, t102, S103, T103, t103, S104, T104, t104, S105, T105, t105, S106, T106, t106, S107, T107, t107, T108, t108, T109: Steps T0, t0, T1, t1, T2, t2, T3, t3, T4, t4, T5, t5, T6, T7: time W1, w1, W2, w2, w3, W4, w4, W5, w5, W6, W7: weight

Claims

1. A resin supply device for supplying resin material to a target object, comprising: Containment Department A container for resin material, having a dispensing portion for dispensing the resin material; A pressing mechanism includes a pressing part inserted into the receiving part, which extrudes resin material from the dispensing part by moving the pressing part; a detection part detects the weight of the resin material extruded from the dispensing part and supplied to the object to be supplied; an opening and closing mechanism includes a chuck configured to form an open state and a closed state, wherein in the open state of the chuck, the resin material extruded from the dispensing part is allowed to reach the object to be supplied, and in the closed state of the chuck, the resin material extruded from the dispensing part is prevented from reaching the object to be supplied; and a control part controls the movement of the pressing part and the opening and closing action of the chuck; wherein the weight of the resin material extruded from the dispensing part and supplied to the object to be supplied, as 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 reaches or exceeds a first predetermined value; and the detection part continues to detect the weight of the resin material even after the pressing part stops moving. After the pressing part stops moving, when the detected weight reaches or exceeds a second predetermined value, the chuck is changed from the open state to the closed state.

2. The resin supply device as claimed in claim 1, wherein the control unit acquires the detected weight after the chuck changes from the open state to the closed state and the resin material is no longer supplied to the object to be supplied, and changes at least one of the first predetermined value and the second predetermined value based on the difference between the acquired value and a preset target weight value.

3. The resin supply device as claimed in claim 1 or 2, wherein the control unit controls the pressing mechanism to make the pressing part move in a first movement, and after the first movement, controls the pressing mechanism to make the pressing part move in a second movement, and the detection unit detects the weight of the resin material extruded from the dispensing part and supplied to the object to be supplied during at least the second movement of the first movement and the second movement.

4. The resin supply device as claimed in claim 3, wherein the control unit causes the pressing part to perform a second movement after moving the pressing part a predetermined distance by performing the first movement through the pressing part.

5. The resin supply device as claimed in claim 3, wherein the weight of the resin material extruded from the ejector and supplied to the object to be supplied per unit time is set as a reference weight, and the control unit controls the pressing mechanism such that the reference weight during the second movement of the pressing part is less than the reference weight during the first movement of the pressing part.

6. The resin supply device as claimed in claim 3, wherein the time for the pressing part to make the first movement is set as a first time, the time for the pressing part to make the second movement is set as a second time, and the control unit controls the pressing mechanism to make the second time shorter than the first time.

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

8. An apparatus for manufacturing resin molded articles, comprising a resin supply device as described in any one of claims 1 to 7.

9. A method for manufacturing a resin molded article using the resin molding article manufacturing apparatus as described in claim 8, comprising the following steps: supplying the resin material to a subject matter by the resin supply device; and resin molding the subject matter using the resin material.

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