Dust collector, resin-molding device, and manufacturing method of resin-molded article

Abstract

To reduce a power consumption amount of a dust collector used for a resin-molding device.SOLUTION: A dust collector 30 for collecting dust from a dust-collection port H5 provided in a molding die cleaner part 9 for cleaning a molding die 11, 12 comprises an air blower 31 driven by a motor 31a, and an inverter 32 for controlling the number of revolutions of the motor 31a. The inverter 32 controls the number of revolutions of the motor 31a to the first number of revolutions RH during cleaning of the molding die 11, 12 with the molding die cleaner part 9 to inertially rotate the motor 31a by releasing electrical connection with the motor 31a after cleaning the molding die 11, 12 with the molding die cleaner part 9.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a dust collecting device, a resin molding device, and a method for manufacturing a resin molded product. [Background technology]

[0002] Conventionally, in a resin molding apparatus using a transfer molding method, dust is collected by a dust collector, as shown in Patent Document 1. In this resin molding apparatus, a dust collection port is provided in a resin supply module that supplies resin tablets, and dust is collected from the dust collection port. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-202495 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, the proportion of power consumption by the dust collection device in the total power consumption of the resin molding device is not small.

[0005] However, the blower of the dust collector in the conventional resin molding apparatus is operated at a constant rotation speed regardless of the location or timing of dust collection.

[0006] SUMMARY OF THE PRESENT DISCLOSURE OF THE PRESENT DISCLOSURE The present invention has been made to solve the above problems, and has as its main object to reduce the power consumption of a dust collection device used in a resin molding machine. [Means for solving the problem]

[0007] In other words, the dust collecting device of the present invention is a dust collecting device that collects dust from one or more dust collection ports provided in a resin molding apparatus, and is equipped with a blower driven by a motor and an inverter that controls the rotation speed of the motor, and collects dust from a dust collection port provided in a mold cleaner section that cleans the molding mold of the resin molding apparatus, and is characterized in that the inverter controls the rotation speed of the motor to a first rotation speed when the mold cleaner section cleans the molding mold, and after the mold cleaner section has cleaned the molding mold, the inverter disconnects the electrical connection to the motor and allows the motor to rotate by inertia. Effect of the Invention

[0008] According to the present invention thus configured, it is possible to reduce the amount of power consumed by the dust collection device used in the resin molding apparatus. [Brief description of the drawings]

[0009] [Figure 1] 1 is a plan view showing a schematic configuration of a resin molding apparatus according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a schematic diagram showing the configuration of the dust collecting device of the embodiment. [Diagram 3] 5 is a schematic diagram showing how a motor of a blower is controlled in the embodiment. FIG. [Figure 4] 5 is a schematic diagram showing the motor rotation speed and power consumption in each mode. FIG. [Diagram 5] 5A to 5C are schematic diagrams showing a dust collection operation, a motor rotation speed, and power consumption during a resin molding operation of the resin molding apparatus in the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Next, the technology according to the present invention will be described in more detail with reference to examples, although the present invention is not limited to the following technology.

[0011] The dust collecting device of Technology 1 according to the present invention is a dust collecting device that collects dust from one or more dust collection ports provided in a resin molding apparatus, and includes a blower driven by a motor and an inverter that controls the rotation speed of the motor, and collects dust from a dust collection port provided in a mold cleaner unit that cleans the molding mold of the resin molding apparatus, and is characterized in that the inverter controls the rotation speed of the motor to a first rotation speed when the mold cleaner unit cleans the molding mold, and after the mold cleaner unit has cleaned the molding mold, the inverter releases the electrical connection to the motor to allow the motor to rotate by inertia.

[0012] With this dust collecting device, when the rotation speed of the motor is reduced from the first rotation speed, the electrical connection to the motor is released and the motor rotates by inertia, so that the power consumption of the dust collecting device used in the resin molding device can be reduced. In particular, since a large amount of dust is generated when the mold cleaner unit cleans the mold, the inverter controls the rotation speed of the motor to the first rotation speed when cleaning the mold, so that a high dust collecting capacity can be exhibited and dust can be collected efficiently. In addition, there is no need to perform deceleration control when the rotation speed is reduced from the first rotation speed by the inverter, so that the processing of regenerative energy generated during the deceleration control can be reduced or eliminated. As a result, components such as resistors for absorbing regenerative energy can be made smaller or eliminated.

[0013] Some resin molding devices include an unnecessary resin removing mechanism that removes unnecessary resin contained in a resin molded product. Some resin molding devices also include a molded product cleaner that cleans the resin molded product before or after the unnecessary resin is removed by the unnecessary resin removing mechanism. For this reason, the dust collecting device of Technology 2 according to the present invention, in addition to the configuration of Technology 1 described above, collects dust from a dust collection port provided in the molded product cleaner that cleans the resin molded product, and it is preferable that the inverter controls the rotation speed of the motor to the first rotation speed when the molded product cleaner cleans the resin molded product, and after the molded product cleaner cleans the resin molded product, the inverter releases the electrical connection to the motor to rotate the motor by inertia. When cleaning a resin molded product with the molded product cleaner, a lot of dust may be generated, and when cleaning the resin molded product, the inverter controls the motor rotation speed to the first rotation speed, so a high dust collection capacity can be demonstrated and dust can be collected efficiently. As a result, the quality of the resin molded product from which unnecessary resin has been removed can be improved.

[0014] A dust collecting device according to a third aspect of the present invention has, in addition to the configuration of the first or second aspect described above, a configuration in which the inverter switches the rotation speed of the motor between the first rotation speed and a second rotation speed that is lower than the first rotation speed, and when switching from the first rotation speed to the second rotation speed, it is preferable to disconnect the electrical connection to the motor and allow the motor to rotate by inertia. With this configuration, when high dust collection capacity is required, the motor can be rotated at the first rotation speed, and when high dust collection capacity is not required, the motor can be rotated at the second rotation speed. As a result, appropriate dust collection can be performed according to the dust collection location or dust collection timing, etc., and the power consumption of the dust collector can be reduced. In addition, when switching from the first rotation speed to the second rotation speed, the electrical connection to the motor is released and the motor is rotated by inertia, so the power consumption when switching to the second rotation speed can be reduced.

[0015] In addition to the configuration of the above-mentioned technique 3, the dust collecting device of technique 4 according to the present invention is preferably configured such that, after the rotation speed of the motor reaches the second rotation speed by inertial rotation, the inverter controls the rotation speed of the motor to the second rotation speed. With this configuration, there is no need to use an inverter to control deceleration from the first rotation speed to the second rotation speed, and the processing of regenerative energy generated during the deceleration control can be reduced or eliminated. As a result, components such as resistors for absorbing regenerative energy can be made smaller or eliminated.

[0016] The dust collection device of Technology 5 according to the present invention, in addition to the configuration of any one of Technologies 1 to 4 described above, collects dust from a dust collection port provided in a resin supply module of the resin molding device, and when collecting dust from the dust collection port provided in the resin supply module, it is preferable that the inverter disconnects the electrical connection to the motor to cause the motor to rotate by inertia, or controls the rotation speed of the motor to the second rotation speed when collecting dust from the dust collection port provided in the resin supply module. The resin supply module includes a resin delivery section that stores and delivers, for example, tablet-shaped resin material, and a resin supply section that delivers the resin material delivered from the resin delivery section to a resin transport mechanism, and each section is provided with a dust collection port. When collecting dust from these dust collection ports, if the dust collection capacity is high, the supply of the resin material may be hindered. Therefore, when collecting dust from the dust collection port of this resin supply module, the motor is rotated by inertia or the motor speed is controlled to a second speed, so that the dust can be collected without hindering the supply of the resin material and the power consumption of the dust collection device can be reduced.

[0017] It is desirable that the dust collection device of Technology 6 according to the present invention includes, in addition to the configuration of any one of Technologies 1 to 5 described above, a connection pipe that connects the plurality of dust collection ports to the blower, and a switching mechanism that is provided in the connection pipe and switches the dust collection port from which dust is collected by the blower. With this configuration, a common blower can be used for a plurality of dust collection ports, making it possible to reduce the number of blowers, and as a result, the power consumption of the dust collection device can be reduced.

[0018] In addition to the configuration of the above-mentioned technique 6, the dust collecting device of technique 7 according to the present invention is preferably configured such that the rotation speed of the motor is set in accordance with the dust collecting port that is switched by the switching mechanism. With this configuration, for example, when switching to the dust collection port of the mold cleaner section or the dust collection port of the unnecessary resin removal section, the motor can be controlled to a first rotation speed. When switching to the dust collection port of another section, the motor can be rotated by inertia or the rotation speed of the motor can be controlled to a second rotation speed. In addition to the first and second rotation speeds, another rotation speed such as a third rotation speed may be set.

[0019] A dust collecting device according to a technique 8 of the present invention has, in addition to the configuration of any one of the techniques 1 to 7 described above, a configuration in which, when controlling the motor to the first rotation speed from a state in which the motor is rotating by inertia, the inverter desirably detects the rotation speed of the motor and resumes supplying electricity to the motor based on the detected rotation speed. With this configuration, since the inverter detects the rotation speed of the motor rotating by inertia, there is no need to provide a separate rotation sensor, and the configuration of the dust collector can be simplified. Here, the inverter may have a current detection type speed search function.

[0020] Further, a resin molding apparatus according to a 9th aspect of the present invention is characterized in that it comprises a resin molding module which transfer molds a resin material onto an object to be molded using a pair of molds, a mold cleaner unit which cleans the molds, and a dust collection device according to any one of the 1st to 8th aspects of the present invention. This resin molding device can reduce the power consumption of the dust collection device, thereby reducing the power consumption of the transfer molding resin molding device. In addition, appropriate dust collection can be performed according to the dust collection location or timing, etc., thereby improving the quality of the resin molded product.

[0021] Furthermore, the manufacturing method of a resin molded product of Technology 10 according to the present invention is a manufacturing method of a resin molded product using the resin molding apparatus of Technology 9 described above, and is characterized by including a supplying step of supplying an object to be molded and a resin material to the molding die, a resin molding step of resin molding the object to be molded, and an unloading step of unloading the resin molded resin molded product from the molding die. This manufacturing method for resin molded products can reduce the power consumption of the dust collection device, thereby reducing the manufacturing cost of the resin molded products. In addition, appropriate dust collection can be performed according to the dust collection location or dust collection timing, etc., thereby improving the quality of the resin molded products.

[0022] <One embodiment of the present invention> DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a resin molding apparatus according to the present invention will be described with reference to the drawings. In addition, in any of the drawings shown below, for the purpose of easy understanding, some parts are omitted or exaggerated in schematic form as appropriate. The same components are denoted by the same reference numerals and the description thereof is omitted as appropriate.

[0023] <1. Basic configuration of resin molding device 100> The resin molding apparatus 100 of this embodiment produces a resin molded product P by resin-sealing an electronic component (not shown) fixed to a substrate W, which is an object to be molded, with a thermosetting resin material J by transfer molding.

[0024] Here, examples of the substrate W include metal substrates, resin substrates, glass substrates, ceramic substrates, circuit substrates, semiconductor substrates, lead frames, silicon wafers, glass wafers, etc. Examples of the electronic components include electronic elements such as semiconductor chips, resistor elements, capacitor elements, etc., or electronic components in which at least one of these electronic elements is resin-encapsulated. Furthermore, the resin material J is a tablet-shaped resin in this embodiment, but may also be, for example, a liquid resin, a sheet-shaped resin, or a powdered resin (including granular resin). The resin material J may also be a material having thermoplasticity.

[0025] 1, the resin molding apparatus 100 includes, as its components, a supply module 2 that supplies a substrate W before resin molding (hereinafter referred to as "pre-molded substrate W") and a resin material J, a resin molding module 3 that performs resin molding, and an unloading module 4 for unloading the substrate W after resin molding (hereinafter referred to as "resin molded product P"). Note that the components of the supply module 2, resin molding module 3, and unloading module 4 can be attached to and detached from the other components, and can be replaced.

[0026] The resin molding apparatus 100 also includes a transport mechanism 5 (hereinafter referred to as the "loader 5") that transports the pre-molded substrate W and resin material J supplied by the supply module 2 to the resin molding module 3, and a transport mechanism 6 (hereinafter referred to as the "unloader 6") that transports the resin molded product P resin molded by the resin molding module 3 to the unloading module 4.

[0027] The supply module 2 of the present embodiment is an integrated module of a substrate supply module 7 and a resin supply module 8. The substrate supply module 7 and the resin supply module 8 may be provided separately.

[0028] The substrate supply module 7 has a substrate sending section 71 and a substrate supply section 72. The substrate sending section 71 sends out the pre-molded substrates W in the magazine to the substrate supply section 72. The substrate supply section 72 receives the pre-molded substrates W from the substrate sending section 71, aligns the received pre-molded substrates W in a predetermined direction, and passes them to the loader 5.

[0029] The resin supply module 8 has a resin delivery section 81, a resin arrangement section 82, and a resin supply section 83. The resin delivery section 81 is a so-called parts feeder, which receives the resin material J from a resin storage section 84 such as a stocker, and sends the resin material J to the resin arrangement section 82 by vibration. The resin arrangement section 82 receives the resin material J from the resin delivery section 81 and arranges the resin material J in a line. The resin supply section 83 aligns the resin material J arranged by the resin arrangement section 82 in groups of multiple pieces, and delivers it to the resin holding section 51 of the loader 5. The resin holding section 51 of the loader 5 is provided in correspondence with the multiple pots 11b formed in the lower mold 11.

[0030] Each of the resin molding modules 3 has a press unit 1. Each of the press units 1 has a lower die 11 that can be raised and lowered, an upper die 12 that is fixed above the lower die 11 so as to face each other, and a die clamping mechanism 13 for clamping the lower die 11 and the upper die 12 together.

[0031] The lower die 11 is formed with a mounting section 11a in which the pre-molded substrate W transported by the loader 5 is mounted. The lower die 11 is formed with a plurality of pots 11b in which the resin material J transported by the loader 5 is mounted. Furthermore, a plunger (not shown) is provided in the pot 11b of the lower die 11 to inject the molten resin material J into a cavity (not shown) formed in the lower die 11 and the upper die 12.

[0032] The discharge module 4 has an unnecessary resin removal mechanism 41 and a resin molded product storage section 42. The unnecessary resin removal mechanism 41 removes (degate processing) the unnecessary resin K from the resin molded product P (including a product part and unnecessary resin K connected to the product part). Specifically, the unnecessary resin removal mechanism 41 has a stage part 41a on which the resin molded product P is placed, and an unnecessary resin removal section 41b that removes the unnecessary resin K from the resin molded product P placed on the stage part 41a. The resin molded product storage section 42 stores the resin molded product P (product part) from which the unnecessary resin K has been removed by the unnecessary resin removal mechanism 41.

[0033] <2. Dust Collection in Resin Molding Apparatus 100> In the resin supply module 8 of this embodiment, as shown in Fig. 1 and Fig. 2, the resin delivery section 81, the resin arrangement section 82, and the resin storage section 84 are provided with dust collection ports H1, H2, and H3 for collecting dust, respectively. A dust collection device 30 is connected to these dust collection ports H1, H2, and H3 (see Fig. 2).

[0034] 1 and 2, the resin supply module 8 is provided with a loader cleaner section 85 for cleaning the resin holding section 51 of the loader 5. The loader cleaner section 85 has a cleaning member 851, such as a brush, for cleaning the resin holding section 51, and a dust collection port H4 for collecting dust generated by cleaning. The dust collection device 30 is connected to the dust collection port H4 (see FIG. 2).

[0035] Furthermore, as shown in Figs. 1 and 2, the resin molding apparatus 100 of this embodiment has a mold cleaner section 9 for cleaning the mold surfaces of the lower mold 11 and the upper mold 12 after resin molding. This mold cleaner section 9 is provided, for example, in the unloader 6, and cleans the mold surfaces of the lower mold 11 and the upper mold 12 when the resin molded product P is carried out from the opened lower mold 11 and the upper mold 12. The mold cleaner section 9 also has a cleaning member 91, such as a brush, for cleaning the mold surfaces of the lower mold 11 and the upper mold 12, and a dust collection port H5 for collecting dust generated by cleaning. A dust collection device 30 is connected to this dust collection port H5 (see Fig. 2). The mold cleaner section 9 may be provided separately for the lower mold 11 and the upper mold 12, or may be a mold cleaner section common to the lower mold 11 and the upper mold 12.

[0036] 1 and 2, the discharge module 4 is provided with a molded product cleaner section 10 that cleans the resin molded product P before or after the unnecessary resin K is removed by the unnecessary resin removing mechanism 41. The molded product cleaner section 10 has a cleaning member 101, such as a brush, for cleaning the resin molded product P, and a dust collection port H6 for collecting dust generated by cleaning. A dust collection device 30 is connected to the dust collection port H6 (see FIG. 2).

[0037] The dust collection ports H1 to H6 may be provided around the respective portions 81, 82, 84, 85, 9, and 10 in addition to the configuration in which they are provided at the respective portions 81, 82, 84, 85, 9, and 10.

[0038] 3. Specific Configuration of Dust Collector 30 Next, a specific configuration of the dust collecting device 30 in this embodiment will be described below.

[0039] 1 and 2, the dust collecting device 30 collects dust from one or more dust collection ports H1 to H6 provided in each module. The dust collecting device 30 in this embodiment is provided in the discharge module 4, but may be provided in another module or externally.

[0040] Specifically, as shown in FIG. 2, the dust collecting device 30 includes a blower 31 driven by a motor 31a, and an inverter 32 that controls the rotation speed of the motor 31a.

[0041] The blower 31 includes blades (not shown) and a motor 31a that rotates and drives the blades. The blower 31 of this embodiment is a concept that includes a fan, a blower, and a compressor. The motor 31a is, for example, a three-phase induction motor.

[0042] The inverter 32 controls the frequency of the AC voltage output to the motor 31a to control the rotation speed of the motor 31a.

[0043] Specifically, the inverter 32 has a converter circuit 32a that converts the AC voltage of the AC power supply 40 into a DC voltage, a capacitor 32b that smoothes the DC voltage from the converter circuit 32a, an inverter circuit 32c that converts the DC voltage smoothed by the capacitor 32b into an AC voltage, and an inverter control unit 32d that controls the inverter circuit 32c. The inverter control unit 32d controls the inverter circuit 32c based on a control command from a control device CTL, which will be described later.

[0044] The inverter circuit 32c of this embodiment converts a DC voltage into a three-phase AC voltage and is configured using a plurality of switching elements (not shown). The inverter control unit 32d controls the plurality of switching elements of the inverter circuit 32c so that an AC voltage of a predetermined frequency is output to the motor 31a.

[0045] 2, the blower 31 is connected to a connection pipe 33 connected to a plurality of dust collection ports H1 to H6. The connection pipe 33 is provided with a switching mechanism 34 for switching the dust collection ports H1 to H6 from which dust is collected by the blower 31. That is, the switching mechanism 34 is connected to a plurality of branch pipes 331 connected to the plurality of dust collection ports H1 to H6, respectively, and is also connected to a common junction pipe 332 connected to the blower 31. The switching mechanism 34 switches the plurality of branch pipes 331 communicating with the junction pipe 332, thereby switching the dust collection ports H1 to H6 from which dust is collected by the blower 31. The switching mechanism 34 can be configured using an opening / closing valve such as an electromagnetic valve, for example.

[0046] The rotation speed of the motor 31a is set in accordance with the plurality of dust collection ports H1 to H6 that are switched by the switching mechanism 34. In this embodiment, the first rotation speed R H Or the first rotation speed R H The second rotation speed R L Either of the following is set.

[0047] Here, the first rotation speed RH is the rotation speed for collecting dust with high dust collection capacity (strong dust collection mode), and is, for example, 90 to 120 rpm. L is the rotation speed for collecting dust with normal dust collection capacity (medium dust collection mode), and is, for example, 50 to 60 rpm.

[0048] As shown in FIG. 3, the inverter 32 changes the rotation speed of the motor 31a to a first rotation speed R H The first rotation speed R H When the rotation speed is to be reduced from the normal speed, the electrical connection to the motor 31a is released to cause the motor 31a to rotate by inertia. In this case, the inertia rotation means that the motor 31a rotates by inertia when the power supply from the inverter 32 is cut off while the motor 31a is rotating, and is also called free running or idling.

[0049] Specifically, the inverter 32 operates at a first rotation speed R H and the second rotation speed R L The inverter 32 switches the rotation speed of the motor 31a between the first rotation speed R H to the second rotation speed R L When the motor 31a is switched to the second rotation speed R, the motor 31a is electrically disconnected and rotated by inertia. L After reaching the second rotation speed R L to control.

[0050] The inverter 32 rotates the motor 31a at a first rotation speed R H 3, the motor 31a is controlled to a second rotation speed R L In this state, the dust collection port H1 to H6 is switched to a second dust collection state (medium dust collection mode) in which dust is collected from the dust collection ports H1 to H6.

[0051] Specifically, when the mold cleaner unit 9 is cleaning the lower mold 11 and the upper mold 12, or when the molded product cleaner unit 10 is cleaning the resin molded product P, the inverter 32 drives the motor 31a at a first rotation speed R HAs a result, a first dust collection state (strong dust collection mode) is entered in which dust is collected from dust collection port H5 of the casting mold cleaner portion 9 or dust collection port H6 of the molded product cleaner portion 10.

[0052] On the other hand, the inverter 32 rotates the motor 31a by inertia when the resin supply module 8 supplies the resin material to the loader 5, except when the lower mold 11 and the upper mold 12 are cleaned and except when the resin molded product P is cleaned, or rotates the motor 31a by inertia and then at the second rotation speed R L This results in a second dust collection state (medium dust collection mode) in which dust is collected from each of the dust collection ports H1 to H4 of the resin supplying module 8. In addition, the inverter 32 constantly controls the motor 31a to rotate at the second rotation speed R 1 , except when the lower die 11 and the upper die 12 are being cleaned, except when the resin molded product P is being cleaned, and except when the resin supplying module 8 is supplying the resin material to the loader 5. L to control.

[0053] <4-1. From coasting to the second rotation speed R L Control to > Here, the motor 31a rotates at a second rotation speed R L The case where the control is performed as above will be described.

[0054] The inverter 32 rotates the motor 31a at a second rotation speed R L In the case of controlling the rotational speed to the first rotational speed R H After a predetermined coasting time has elapsed since the electrical connection to the motor 31a controlled by the motor control unit 31 is released, the supply of electricity to the motor 31a is resumed to rotate the motor at the second rotation speed R L Here, the predetermined coasting time is the first rotation speed R H After the electrical connection to the motor 31a rotating at the second rotation speed R is released, the motor 31a rotates by inertia at the second rotation speed R L The time required for the vehicle to decelerate to a certain degree can be set by previously calculating or experimenting.

[0055] The inverter 32 also changes the rotation speed of the motor 31a from the inertial rotation to the second rotation speed R LIn the case of controlling the rotational speed to the first rotational speed R H After a predetermined time has elapsed since the electrical connection to the motor 31a controlled by the inverter 32 is released, the inverter 32 detects the rotation speed of the motor 31a rotating by inertia using the speed search function. Then, based on the detected rotation speed, the inverter 32 resumes the supply of electricity to the motor 31a and rotates the motor at the second rotation speed R. L It is possible to control the

[0056] The speed search function of the inverter 32 is a current detection type speed search function built into the inverter 32, and is performed before restarting the supply of current to the motor 31a. This current detection type speed search function is a known function that sweeps the frequency of the AC voltage supplied to the motor 31a, detects the current flowing through the motor 31a at that time, and identifies (estimates) the rotation speed of the motor 31a based on the detected current.

[0057] <4-2. From coasting to the first rotation speed R H Control to > Next, the motor 31a rotates at a first rotation speed R H The case where the control is performed as above will be described.

[0058] The inverter 32 rotates the motor 31a at a first rotation speed R H When controlling the motor 31a, as shown at time "E2" and time "E3" in FIG. 3, the rotation speed of the motor 31a is detected, and the supply of electricity to the motor 31a is resumed based on the detected rotation speed.

[0059] Specifically, the inverter 32 rotates at a first rotation speed R H When the inverter 32 receives a control command to the motor 31a, the inverter 32 detects the rotation speed of the motor 31a rotating by inertia using the speed search function. Then, based on the detected rotation speed, the inverter 32 resumes the supply of electricity to the motor 31a, and rotates the motor 31a at the first rotation speed R. H to control.

[0060] <4-3. Second rotation speed R Lto the first rotation speed R H Control to > The inverter 32 rotates the motor 31a at a second rotation speed R L The first rotation speed R H When a control command to the first rotation speed R is received, the rotation speed of the motor 31a is gradually increased without using the current detection type speed search function, as shown at time points "E4" and "E5" in FIG. 3, until the first rotation speed R H to control.

[0061] <5. Rotation speed and power consumption in each mode> Next, the rotation speed and the power consumption in the three operation modes will be described with reference to FIG.

[0062] Here, the first operation mode (see FIG. 4(a)) is a conventional operation mode, in which the motor 31a of the blower 31 is rotated at a constant rotation speed (first rotation speed R H In the second operation mode (see FIG. 4(b)), the motor 31a of the blower 31 is controlled by the inverter 32 to rotate at a first rotation speed R H (Strong dust collection mode) and second rotation speed R L The third operation mode (see FIG. 4(c)) is an operation mode of the present embodiment, in which the rotation of the motor 31a of the blower 31 is controlled by the inverter 32, and the motor 31a of the blower 31 is driven at a first rotation speed R H (Strong dust collection mode) to second rotation speed R L This is what rotates by inertia when switching to medium dust collection mode.

[0063] The first operation mode consumes a constant amount of power regardless of the dust collection position. The second operation mode can reduce the amount of power consumed by the dust collection device 30 compared to the first operation mode. This leads to a reduction in the amount of power consumed by the resin molding apparatus 100. Furthermore, the third operation mode can further reduce the amount of power consumed during deceleration compared to the second operation mode, and can also reduce the size of or eliminate the need for components such as resistors for consuming regenerative energy during deceleration.

[0064] <6. Resin Molding Operation of Resin Molding Apparatus 100> Next, an example of the operation of the resin molding apparatus 100 will be described with reference to Figs. 1 and 5. The operation described below is performed by, for example, a control device CTL provided in the supply module 2 controlling each part of the resin molding apparatus 100. The control device CTL is a dedicated or general-purpose computer having a CPU, an internal memory, an input / output interface, an AD converter, etc. Fig. 5 is a simplified view of the operation of the resin molding apparatus 100. In reality, a pre-molding substrate / resin material supplying process ("loading" in Fig. 5), a resin molding process ("molding" in Fig. 5), a resin molded product unloading process, an unnecessary resin removing process, and a resin molded product storing process ("unloading" in Fig. 5) are performed in parallel.

[0065] During the dust collection operation in the resin molding operation described below, dust is always collected from the dust collection port H1 of the resin delivery section 81 and the dust collection port H3 of the resin storage section 84, and when dust is collected from the other dust collection ports H2, H4 to H6, dust collection from the dust collection port H1 of the resin delivery section 81 and the dust collection port H3 of the resin storage section 84 is turned off.

[0066] (1) Substrate and resin material supply process before molding The substrate sending section 71 sends out the pre-molded substrates W in the magazine to the substrate supply section 72. The substrate supply section 72 aligns the received pre-molded substrates W in a predetermined direction and delivers them to the loader 5. In parallel with this, the resin sending section 81 sends out the resin material J received from the stocker 84 to the resin arrangement section 82. The resin supply section 83 delivers the required number of resin materials J (four in FIG. 1 ) from the resin arrangement section 82 to the loader 5.

[0067] Next, the loader 5 simultaneously transports the received two pre-molded substrates W and four resin materials J to the press unit 1. The loader 5 supplies the pre-molded substrates W to the mounting portion 11a of the lower die 11, and supplies the resin materials J to the inside of the pot 11b formed in the lower die 11, respectively.

[0068] In this pre-molding substrate / resin material supplying process, the inverter 32 rotates the motor 31a at the second rotation speed R L The switching mechanism 34 controls the resin supply module 8 to the medium dust collection mode. In addition, the switching mechanism 34 switches so that dust is collected from the dust collection ports H1 to H4 of the resin supply module 8. Specifically, when the loader cleaner unit 85 cleans the resin holding unit 51 of the loader 5, the switching mechanism 34 switches so that dust is collected from the dust collection port H4 of the loader cleaner unit 85. In addition, when the resin arranging unit 82 arranges the resin material in a line, the switching mechanism 34 switches so that dust is collected from the dust collection port H2 of the resin arranging unit 82. At other times, until the loader 5 supplies the resin material J to the lower mold 11, the switching mechanism 34 switches so that dust is collected from the dust collection port H1 of the resin delivery unit 81 and the dust collection port H3 of the resin storage unit 84.

[0069] (2) Resin molding process Thereafter, the upper die 12 and the lower die 11 are clamped together using the clamping mechanism 13. Then, the resin material J in each pot 11b is heated and melted to generate a fluid resin, and the fluid resin is pressed by the plunger. As a result, the fluid resin is injected into the cavity formed between the upper die 12 and the lower die 11. Subsequently, the fluid resin is heated for the required time required for hardening, thereby hardening the fluid resin to form a hardened resin. As a result, the electronic component in the cavity and the surrounding substrate are sealed in the hardened resin (sealing resin) that is molded to correspond to the shape of the cavity.

[0070] In this resin molding process, the inverter 32 rotates the motor 31a at the second rotation speed R L The switching mechanism 34 controls the dust collection mode to the medium dust collection mode. Also, the switching mechanism 34 switches so that dust is collected from the dust collection ports H1 to H4 of the resin supplying module 8. Specifically, the switching mechanism 34 switches so that dust is collected from the dust collection port H1 of the resin sending-out part 81 and the dust collection port H3 of the resin containing part 84.

[0071] (3) Resin molded product unloading process Next, after the required time required for curing has elapsed, the upper die 12 and the lower die 11 are opened to release the resin molded product P, which is the molded substrate. Thereafter, the unloader 6 unloads the resin molded product P from the opened upper die 12 and lower die 11. The unloader 6, which has received the resin molded product P, transports it to the unloading module 4.

[0072] When the unloader 6 unloads the resin molded product P, the mold cleaner unit 9 provided on the unloader 6 cleans the lower mold 11 and the upper mold 12.

[0073] At this time, the inverter 32 rotates the motor 31a at the first rotation speed R H to set the strong dust collection mode. The switching mechanism 34 also switches so that dust is collected from the dust collection port H5 of the casting mold cleaner unit 9. Dust collection through this dust collection port H5 begins before or simultaneously with the start of cleaning by the casting mold cleaner unit 9. When cleaning by the casting mold cleaner unit 9 is completed, the inverter 32 releases the electrical connection to the motor 31a, causing the motor 31a to rotate by inertia, and transitions to the medium dust collection mode.

[0074] (4) Unnecessary resin removal process Then, the unloader 6 places the removed resin molded product P on the stage portion 41a of the unnecessary resin removal mechanism 41. When the resin molded product P is placed on the stage portion 41a, the unnecessary resin K of the resin molded product P is removed. At least either before or after the unnecessary resin K is removed, the resin molded product P is cleaned by the molded product cleaner portion 10.

[0075] At this time, the inverter 32 rotates the motor 31a at the first rotation speed R H to set the strong dust collection mode. The switching mechanism 34 also switches so that dust is collected from the dust collection port H6 of the molded product cleaner unit 10. Dust collection through this dust collection port H6 begins before or simultaneously with the start of cleaning by the molded product cleaner unit 10. When cleaning by the molded product cleaner unit 10 is completed, the inverter 32 releases the electrical connection to the motor 31a, causing the motor 31a to rotate by inertia, and transitions to the medium dust collection mode.

[0076] (5) Plastic molding storage process Thereafter, the unloader 6 stores the resin molded product (product portion) from which the unnecessary resin K has been removed in the resin molded product storage section 42 of the carry-out module 4.

[0077] <7. Effects of this embodiment> According to the resin molding apparatus 100 of the present embodiment, the rotation speed of the motor 31a is set to the first rotation speed R H The first rotation speed R H When the rotation speed is reduced, the electrical connection to the motor 31a is released and the motor 31a is allowed to rotate by inertia, so that the amount of power consumed by the dust collecting device 30 used in the resin molding apparatus 100 can be reduced.

[0078] In particular, when the lower mold 11 and the upper mold 12 are cleaned by the mold cleaner unit 9, a large amount of dust is generated. Therefore, when the lower mold 11 and the upper mold 12 are cleaned, the inverter 32 sets the rotation speed of the motor 31a to the first rotation speed R H Since the first rotation speed R H Since there is no need for deceleration control when lowering the rotation speed from the deceleration control, the processing of regenerative energy generated during the deceleration control can be reduced or eliminated, and as a result, components such as resistors for absorbing regenerative energy can be made smaller or eliminated.

[0079] In addition, when the molded product cleaner 10 cleans the resin molded product P, a large amount of dust may be generated. During cleaning of the resin molded product P, the inverter 32 sets the rotation speed of the motor 31a to the first rotation speed R H Since the dust collecting speed is controlled to 100%, a high dust collecting capacity can be exhibited and dust can be collected efficiently. As a result, the quality of the resin molded product P from which unnecessary resin has been removed can be improved.

[0080] <8. Other Modified Embodiments> The present invention is not limited to the above-described embodiment.

[0081] For example, in the above embodiment, the first rotation speed R H and the second rotation speed R L However, other rotation speeds may be added to provide a configuration in which the speed can be switched in three or more steps.

[0082] As a method for detecting the rotation speed of the motor 31a rotating by inertia, in addition to the speed search function of the inverter 32, a rotation sensor may be provided on the motor 31a to detect the rotation speed of the motor 31a.

[0083] In the above embodiment, one resin molding module 3 is connected between the supply module 2 and the discharge module 4, but two or more resin molding modules 3 may be connected. Furthermore, the resin molding apparatus does not have to be modularized into individual modules as in the above embodiment.

[0084] Furthermore, the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications are possible without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0085] 100...Resin molding equipment 3. Resin molding module 8. Resin supply module W: Molding object J...Resin material P...Resin molded product K...Unnecessary resin 11, 12...Mold H1~H6...Dust collection port 9. Mold cleaner section 10. Molded product cleaner section 30 Dust collection device 31... Blower 31a···Motor R H 1st rotation speed R L ...Second rotation speed 32...Inverter 33 Connection piping 34...Switching mechanism

Claims

1. A dust collecting device that collects dust from one or more dust collection ports provided in a resin molding device, The apparatus includes a blower driven by a motor and an inverter that controls the number of revolutions of the motor, and collects dust from a dust collection port provided in a mold cleaner unit that cleans the mold of the resin molding apparatus, the inverter controls the rotation speed of the motor to a first rotation speed when the mold cleaner unit cleans the mold, and after the mold cleaner unit has cleaned the mold, the inverter disconnects the electrical connection to the motor to cause the motor to rotate by inertia.

2. Dust is collected from a dust collection port provided in a molded product cleaner section that cleans resin molded products, 2. The dust collecting device according to claim 1, wherein the inverter controls the rotation speed of the motor to the first rotation speed when the molded product cleaner unit cleans the resin molded product, and after the molded product cleaner unit cleans the resin molded product, the inverter disconnects the electrical connection to the motor to cause the motor to rotate by inertia.

3. 3. The dust collecting device according to claim 1, wherein the inverter switches the rotation speed of the motor between the first rotation speed and a second rotation speed that is lower than the first rotation speed, and when switching from the first rotation speed to the second rotation speed, the inverter disconnects the electrical connection to the motor to cause the motor to rotate by inertia.

4. The dust collecting device according to claim 3 , wherein the inverter controls the rotation speed of the motor to the second rotation speed after the rotation speed of the motor reaches the second rotation speed by inertial rotation.

5. Dust is collected from a dust collection port provided in a resin supply module of the resin molding device, The dust collecting device according to claim 3 or 4, wherein when collecting dust from a dust collection port provided in the resin supply module, the inverter disconnects the electrical connection to the motor to cause the motor to rotate by inertia, or controls the rotation speed of the motor to the second rotation speed.

6. A connection pipe that connects the plurality of dust collection ports and the blower; The dust collecting device according to claim 1 , further comprising a switching mechanism provided in the connection pipe for switching the dust collection port from which dust is collected by the blower.

7. The dust collecting device according to claim 6 , wherein a rotation speed of the motor is set in accordance with the dust collection port that is switched by the switching mechanism.

8. 8. The dust collecting device according to claim 1, wherein the inverter, when controlling the motor to the first rotation speed from a state in which the motor is rotating by inertia, detects the rotation speed of the motor and resumes supplying electricity to the motor based on the detected rotation speed.

9. a resin molding module that transfer molds a resin material onto a molding object using a pair of molds; a mold cleaner unit for cleaning the mold; A resin molding apparatus comprising the dust collecting device according to any one of claims 1 to 8.

10. A method for producing a resin molded product using the resin molding apparatus according to claim 9, a supplying step of supplying a molding object and a resin material to the molding die; a resin molding step of performing resin molding on the molding object; and removing the resin molded product from the mold.

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