Dust collector, resin molding apparatus, and method for manufacturing resin molded products

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 collection device, a resin molding device, and a method for manufacturing a resin molded product.

Background Art

[0002] Conventionally, as shown in Patent Document 1, in a resin molding device using a transfer molding method, dust is collected by a dust collection device. In this resin molding device, 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

Summary of the Invention

Problems to be Solved by the Invention

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

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

[0006] Therefore, the present invention has been made to solve the above problems, and its main object is to reduce the power consumption of the dust collection device used in the resin molding device.

Means for Solving the Problems

[0007] That is, the dust collector according to the present invention is a dust collector 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. The dust collector 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 during cleaning of the mold by the mold cleaner unit, and after cleaning of the mold by the mold cleaner unit, disconnects the electrical connection to the motor to cause the motor to rotate inertially.

Advantages of the Invention

[0008] According to the present invention configured as described above, the power consumption of the dust collector used in the resin molding apparatus can be reduced.

Brief Description of the Drawings

[0009] [Figure 1] It is a plan view schematically showing the configuration of a resin molding apparatus according to an embodiment of the present invention. [Figure 2] It is a schematic diagram showing the configuration of the dust collector of the same embodiment. [Figure 3] It is a schematic diagram showing the control content of the motor of the blower in the same embodiment. [Figure 4] It is a schematic diagram showing the motor rotation speed and power consumption in each mode. [Figure 5] It is a schematic diagram showing the dust collection operation, motor rotation speed, and power consumption in the resin molding operation of the resin molding apparatus in the same embodiment.

Embodiments for Carrying Out the Invention

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

[0011] The dust collector of Technology 1 according to the present invention is a dust collector that collects dust from one or more dust collection ports provided in a resin molding apparatus, and comprises 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 die of the resin molding apparatus, wherein the inverter controls the rotation speed of the motor to a first rotation speed when the mold cleaner section cleans the molding die, and after the mold cleaner section cleans the molding die, the electrical connection to the motor is released and the motor is allowed to rotate by inertia.

[0012] This dust collector reduces the power consumption of dust collectors used in resin molding machines because, when the motor speed is reduced from the first rotational speed, the electrical connection to the motor is disconnected, allowing the motor to rotate by inertia. In particular, a large amount of dust is generated when cleaning the molding die with the mold cleaner section, and since the inverter controls the motor speed to the first rotational speed during this cleaning, it can exhibit high dust collection capacity and efficiently collect dust. Furthermore, there is no need for deceleration control when reducing the rotational speed from the first rotational speed using the inverter, and the processing of regenerative energy generated in that deceleration control can be reduced or eliminated. As a result, components such as resistors used to absorb regenerative energy can be miniaturized or eliminated.

[0013] Some resin molding apparatuses are equipped with an unwanted resin removal mechanism to remove unwanted resin contained in the molded resin product. Furthermore, some resin molding apparatuses have a molded product cleaner section that cleans the molded resin product before or after the unwanted resin has been removed by this unwanted resin removal mechanism. For this reason, the dust collector 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 section that cleans the molded resin product, and it is desirable that the inverter controls the rotation speed of the motor to the first rotation speed when the molded resin product is being cleaned by the molded product cleaner section, and after the molded resin product is being cleaned by the molded product cleaner section, the electrical connection to the motor is released and the motor is allowed to rotate by inertia. When cleaning resin molded products with the molded product cleaner unit, a large amount of dust may be generated. During this cleaning process, the inverter controls the motor speed to the first rotation speed, enabling high dust collection capacity and efficient dust collection. As a result, the quality of the resin molded product from which unwanted resin has been removed can be improved.

[0014] The dust collector of Technology 3 according to the present invention, in addition to the configuration of Technology 1 or 2 described above, has an inverter that switches the rotational speed of the motor between a first rotational speed and a second rotational speed which is lower than the first rotational speed, and it is desirable to disconnect the electrical connection to the motor and allow the motor to rotate by inertia when switching from the first rotational speed to the second rotational speed. With this configuration, the motor can be rotated at the first rotational speed when high dust collection capacity is required, and at the second rotational speed when high dust collection capacity is not required. As a result, appropriate dust collection can be performed according to the dust collection location or timing, and the power consumption of the dust collector can be reduced. In addition, when switching from the first rotational speed to the second rotational speed, the electrical connection to the motor is disconnected and the motor is allowed to rotate by inertia, so the power consumption when switching to the second rotational speed can be reduced.

[0015] In addition to the configuration of the above-described technology 3, the dust collector of technology 4 according to the present invention preferably controls the rotational speed of the motor to the second rotational speed after the rotational speed of the motor has reached the second rotational speed due to inertial rotation. With this configuration, there is no need to use an inverter to control the deceleration from the first rotational speed to the second rotational speed, and the processing of regenerative energy generated during that deceleration control can be reduced or eliminated. As a result, components such as resistors used to absorb regenerative energy can be miniaturized or eliminated.

[0016] The dust collector of Technology 5 according to the present invention, in addition to the configuration of any one of the above-described technologies 1 to 4, collects dust from a dust collection port provided in the resin supply module of the resin molding apparatus. When the inverter collects dust from the dust collection port provided in the resin supply module, it is desirable to either disconnect the electrical connection to the motor and allow the motor to rotate by inertia, or to control the rotational speed of the motor to the second rotational speed. The resin supply module includes a resin delivery section that houses and delivers, for example, tablet-shaped resin material, and a resin supply section that supplies the resin material delivered from the resin delivery section to a resin transport mechanism. Dust collection ports are provided in each of these sections. When collecting dust from these dust collection ports, if the dust collection capacity is too high, it may hinder the supply of resin material. Therefore, when collecting dust from the dust collection ports of this resin supply module, by allowing the motor to rotate by inertia or by controlling the motor's rotation speed to the second rotation speed, dust can be collected without hindering the supply of resin material, and the power consumption of the dust collector can be reduced.

[0017] The dust collector of Technology 6 according to the present invention preferably includes, in addition to any one of the above-described configurations of Technology 1 to 5, a connecting pipe that connects a plurality of dust collection ports to the blower, and a switching mechanism provided in the connecting pipe that switches the dust collection ports from which the blower collects dust. With this configuration, a common blower can be used for multiple dust collection ports, reducing the number of blowers required. As a result, the power consumption of the dust collection system can be reduced.

[0018] In addition to the configuration of the above-described technology 6, it is desirable that the motor speed is set to correspond to the dust collection port that is switched by the switching mechanism in the dust collection device of technology 7 according to the present invention. With this configuration, for example, when switching to the dust collection port of the mold cleaner section or the dust collection port of the waste resin removal section, the motor can be controlled to the first rotation speed. When switching to the dust collection port of other sections, the motor can be allowed to rotate by inertia, or the motor speed can be controlled to the second rotation speed. In addition to the first and second rotation speeds, other rotation speeds such as a third rotation speed may also be set.

[0019] In addition to the configuration of any one of the above-described technologies 1 to 7, the dust collector of technology 8 according to the present invention preferably has the inverter detect the rotational speed of the motor and resume power supply to the motor based on the detected rotational speed when controlling the motor from a state of inertial rotation to the first rotational speed. With this configuration, the inverter detects the rotational speed of the motor as it inerts, eliminating the need for a separate rotation sensor and simplifying the dust collection system. Here, it is conceivable that the inverter has a current-detection type speed search function.

[0020] Furthermore, the resin molding apparatus of Technology 9 according to the present invention is characterized by comprising a resin molding module that transfers and molds a resin material onto an object to be molded using a pair of molds, a mold cleaner unit that cleans the molds, and a dust collector of any one of the above technologies 1 to 8. This resin molding apparatus can reduce the power consumption of the dust collector, thereby reducing the power consumption of the resin molding apparatus used in transfer molding. Furthermore, it can perform appropriate dust collection according to the dust collection location or timing, thereby improving the quality of the molded resin products.

[0021] Furthermore, the method for manufacturing a resin molded product according to Technology 10 of the present invention is a method for manufacturing a resin molded product using the resin molding apparatus of Technology 9 described above, characterized in that it includes a supply step of supplying an object to be molded and a resin material to the mold, a resin molding step of performing resin molding on the object to be molded, and a discharge step of dischargeing the resin molded product from the mold. This method of manufacturing resin molded products reduces the power consumption of the dust collector, thereby lowering the manufacturing cost of the resin molded products. Furthermore, it allows for appropriate dust collection depending on the dust collection location or timing, improving the quality of the resin molded products.

[0022] <One Hundred Ideas> An embodiment of the resin molding apparatus according to the present invention will be described below with reference to the drawings. Please note that all of the following diagrams are simplified and simplified for clarity. The same components are denoted by the same symbols, and explanations are omitted as appropriate.

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

[0024] Here, the substrate W can be, for example, a metal substrate, a resin substrate, a glass substrate, a ceramic substrate, a circuit board, a semiconductor substrate, a lead frame, a silicon wafer, a glass wafer, etc. The electronic component can be, for example, a semiconductor chip, a resistor, a capacitor, or an electronic component in which at least one of these electronic components is encapsulated in resin. Furthermore, the resin material J is a tablet-shaped resin in this embodiment, but may be, for example, a liquid resin, a sheet-shaped resin, or a powder- or granular resin (including granular resin). The resin material J may also be a thermoplastic material.

[0025] Specifically, as shown in Figure 1, the resin molding apparatus 100 includes a supply module 2 for supplying a substrate W (hereinafter referred to as "pre-molding substrate W") and resin material J before resin molding, a resin molding module 3 for performing resin molding, and an unloading module 4 for unloading the substrate W (hereinafter referred to as "resin molded product P") after resin molding, each as a component. The supply module 2, resin molding module 3, and unloading module 4, which are components, can be attached to and detached from each other and can be replaced.

[0026] Furthermore, the resin molding apparatus 100 includes a transport mechanism 5 (hereinafter referred to as "loader 5") that transports the unmolded 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 "unloader 6") that transports the resin molded product P molded by the resin molding module 3 to the discharge module 4.

[0027] In this embodiment, the supply module 2 integrates the substrate supply module 7 and the resin supply module 8. Alternatively, the substrate supply module 7 and the resin supply module 8 may be provided separately.

[0028] The substrate supply module 7 includes a substrate delivery unit 71 and a substrate supply unit 72. The substrate delivery unit 71 delivers the unmolded substrates W in the magazine to the substrate supply unit 72. The substrate supply unit 72 receives the unmolded substrates W from the substrate delivery unit 71, aligns the received unmolded substrates W in a predetermined direction, and hands them over to the loader 5.

[0029] The resin supply module 8 includes a resin delivery unit 81, a resin arrangement unit 82, and a resin supply unit 83. The resin delivery unit 81 is a so-called parts feeder that receives resin material J from a resin storage unit 84 such as a stocker and sends the resin material J to the resin arrangement unit 82 by vibration. The resin arrangement unit 82 receives the resin material J from the resin delivery unit 81 and arranges the resin material J in a line. The resin supply unit 83 aligns the resin material J arranged by the resin arrangement unit 82 in groups of multiples and hands them over to the resin holding unit 51 of the loader 5. The resin holding unit 51 of the loader 5 is provided to correspond to a plurality of pots 11b formed in the lower mold 11.

[0030] Each resin molding module 3 has a press section 1. Each press section 1 has a lower die 11 that can be raised and lowered, an upper die 12 fixed opposite to the lower die 11 above it, and a mold clamping mechanism 13 for clamping the lower die 11 and the upper die 12 together.

[0031] The lower mold 11 has a mounting section 11a into which the unmolded substrate W, transported by the loader 5, is mounted. The lower mold 11 also has a plurality of pots 11b into which the resin material J, transported by the loader 5, is mounted. In addition, plungers (not shown) are provided inside the pots 11b of the lower mold 11 for injecting the molten resin material J into cavities (not shown) formed in the lower mold 11 and the upper mold 12.

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

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

[0034] Furthermore, as shown in Figures 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. This 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 the cleaning. A dust collector 30 is connected to this dust collection port H4 (see Figure 2).

[0035] Furthermore, as shown in Figures 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 upper mold 12 after resin molding. This mold cleaner section 9 is provided, for example, on the unloader 6, and cleans the mold surfaces of the lower mold 11 and upper mold 12 when the resin molded product P is unloaded from the opened lower mold 11 and 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 upper mold 12, and a dust collection port H5 for collecting dust generated by the cleaning. A dust collector 30 is connected to this dust collection port H5 (see Figure 2). Note that the mold cleaner section 9 may be provided separately for the lower mold 11 and the upper mold 12, or it may be a common mold cleaner section for the lower mold 11 and upper mold 12.

[0036] Furthermore, as shown in Figures 1 and 2, the discharge module 4 is provided with a molded product cleaner section 10 for cleaning the resin molded product P before or after the removal of unwanted resin K by the unwanted resin removal mechanism 41. This 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 the cleaning. A dust collection device 30 is connected to this dust collection port H6 (see Figure 2).

[0037] In addition to the configuration in which the above-mentioned dust collection ports H1 to H6 are provided on each of the parts 81, 82, 84, 85, 9, and 10, they may also be provided around each of the parts 81, 82, 84, 85, 9, and 10, corresponding to those parts.

[0038] <3. Specific configuration of the dust collector 30> Next, the specific configuration of the dust collector 30 in this embodiment will be described below.

[0039] As shown in Figures 1 and 2, the dust collector 30 collects dust from one or more dust collection ports H1 to H6 provided in each module. In this embodiment, the dust collector 30 is provided in the discharge module 4, but it may be provided in another module or externally.

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

[0041] The blower 31 comprises blades (not shown) and a motor 31a that rotates the blades. The blower 31 in this embodiment is a concept that includes fans, blowers, or compressors. The motor 31a is, for example, a three-phase induction motor.

[0042] The inverter 32 controls the rotational speed of the motor 31a by controlling the frequency of the AC voltage output to the motor 31a.

[0043] Specifically, the inverter 32 includes a converter circuit 32a that converts the AC voltage of the AC power supply 40 to a DC voltage, a capacitor 32b that smooths the DC voltage from the converter circuit 32a, an inverter circuit 32c that converts the DC voltage smoothed by the capacitor 32b to 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 control commands from the control device CTL, which will be described later.

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

[0045] As shown in Figure 2, the blower 31 is connected to a connecting pipe 33 that is connected to a plurality of dust collection ports H1 to H6. The connecting pipe 33 is provided with a switching mechanism 34 that switches which dust collection ports H1 to H6 are used to collect dust by the blower 31. In other words, the switching mechanism 34 is connected to a plurality of branch pipes 331 that are connected to each of the plurality of dust collection ports H1 to H6, as well as a common junction pipe 332 that is connected to the blower 31. The switching mechanism 34 switches which dust collection ports H1 to H6 are used to collect dust by the blower 31 by switching the plurality of branch pipes 331 that are in communication with the junction pipe 332. This switching mechanism 34 can be configured using, for example, an on / off valve such as a solenoid valve.

[0046] The rotation speed of the motor 31a is set to correspond to the multiple dust collection ports H1 to H6 that can be switched by the switching mechanism 34. In this embodiment, the first rotation speed R corresponds to the multiple dust collection ports H1 to H6. H or the first rotational speed R H The second rotational speed R is a lower rotational speed than the second rotational speed. L One of the following is set.

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

[0048] And, as shown in FIG. 3, the inverter 32 controls the rotational speed of the motor 31a to the first rotational speed R H and releases the electrical connection to the motor 31a to let the motor 31a rotate coastally when reducing the rotational speed from the first rotational speed R H . Here, coasting rotation means that when the power supply from the inverter 32 is cut off while the motor 31a is rotating, the motor 31a rotates coastally, which is also called free running or idling.

[0049] Specifically, as shown in FIG. 3, the inverter 32 switches the rotational speed of the motor 31a between the first rotational speed R H and the second rotational speed R L . Also, when switching from the first rotational speed R H to the second rotational speed R L , the inverter 32 releases the electrical connection to the motor 31a to let the motor 31a rotate coastally. Then, after the motor 31a reaches the second rotational speed R L due to coasting rotation, the inverter 32 controls the motor 31a to the second rotational speed R L .

[0050] Also, the inverter 32 controls the motor 31a to the first rotational speed R H to collect dust from the dust collection ports H1 to H6 in the first dust collection state (strong dust collection mode), and controls the motor 31a to the second rotational speed R L to collect dust from the dust collection ports H1 to H6 in the second dust collection state (medium dust collection mode), and switches between them.

[0051] Specifically, the inverter 32 controls the motor 31a to the first rotational speed R when cleaning the lower mold 11 and the upper mold 12 by the mold cleaner unit 9, or when cleaning the resin molded product P by the molded product cleaner unit 10. HThis controls the system to collect dust from the dust collection port H5 of the mold cleaner unit 9 or the dust collection port H6 of the molded product cleaner unit 10, resulting in a first dust collection state (strong dust collection mode).

[0052] On the other hand, the inverter 32, except when cleaning the lower mold 11 and upper mold 12 and when cleaning the resin molded product P, will cause the motor 31a to rotate by inertia, or after the motor 31a has rotated by inertia, to rotate at a second rotational speed R L This controls the motor to a second dust collection state (intermediate dust collection mode) in which dust is collected from each of the dust collection ports H1 to H4 of the resin supply module 8. In addition, the inverter 32 keeps the motor 31a at the second rotational speed R at all times, except when cleaning the lower mold 11 and upper mold 12, when cleaning the resin molded product P, and when supplying resin material to the loader 5 by the resin supply module 8. L Control it.

[0053] <4-1. From inertial rotation to the second rotation R L Control to > Here, the motor 31a rotates by inertia, and then the second rotational speed R L This section explains how to control it.

[0054] The inverter 32 starts the motor 31a from a state of inertial rotation to a second rotational speed R L When controlling it in this way, as shown at the "E1" point in Figure 3, the first rotational speed R H After disconnecting the electrical connection to the motor 31a, which is controlled by the motor, and after a predetermined inertia time has elapsed, the power supply to the motor 31a is resumed and the second rotational speed R is activated. L It is conceivable to control it in this way. Here, the predetermined inertia time is the first rotational speed R. H After disconnecting the electrical connection to the rotating motor 31a, the motor 31a continues to rotate by inertia and reaches a second rotational speed R. L The time required for deceleration can be determined in advance through calculation or experimentation.

[0055] Furthermore, the inverter 32 sets the motor 31a to a second rotational speed R from the state where the motor 31a is rotating by inertia. LWhen controlling it in this way, as shown at the "E1" point in Figure 3, the first rotational speed R H After a predetermined time has elapsed since the electrical connection to the motor 31a, which is controlled by the inverter, is disconnected, the inverter 32 uses a speed search function to detect the rotational speed of the motor 31a, which is rotating by inertia. Then, based on the detected rotational speed, the inverter 32 resumes power supply to the motor 31a and sets it to the second rotational speed R L It is conceivable that this could be controlled.

[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 power is restored 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 rotational speed of the motor 31a based on the detected current.

[0057] <4-2. From inertial rotation to the first rotational speed R H Control to > Next, from the state in which motor 31a is rotating by inertia, the first rotational speed R H This section explains how to control it.

[0058] The inverter 32 starts the motor 31a from a state where it is rotating by inertia and then sets the first rotational speed R H When controlling the motor, as shown in Figure 3 at points "E2" and "E3", the rotational speed of the motor 31a is detected, and power is restored to the motor 31a based on the detected rotational speed.

[0059] Specifically, the inverter 32 operates at a first rotational speed R when the motor 31a is rotating by inertia. H Upon receiving a control command, the inverter 32 uses the speed search function described above to detect the rotational speed of the motor 31a, which is rotating by inertia. Based on the detected rotational speed, the inverter 32 resumes power supply to the motor 31a and sets the motor 31a to the first rotational speed R H Control it.

[0060] <4-3. Second rotation R LFrom the first rotation R H Control to > Furthermore, the inverter 32 controls the motor 31a to the second rotational speed R L With the control set to the first rotation speed R H When a control command is received, as shown at "E4" and "E5" in Figure 3, the rotational speed of the motor 31a is gradually increased without using the current detection type speed search function, until the first rotational speed R H Control it.

[0061] <5. Rotation speed and power consumption in each mode> Next, the rotational speed and power consumption in the three operating modes will be explained based on Figure 4.

[0062] Here, the first operating mode (see Figure 4(a)) is the conventional operating mode, in which the motor 31a of the blower 31 is rotated at a constant speed (first rotation speed R) H The control is performed so that the motor 31a of the blower 31 is set to a first rotational speed R. H (Strong dust collection mode) and 2nd rotation R L This involves acceleration and deceleration control between the (medium dust collection mode) and the third operating mode (see Figure 4(c)). The third operating mode is the operating mode of this embodiment, in which the motor 31a of the blower 31 is rotated by the inverter 32, and the motor 31a of the blower 31 is rotated to a first rotational speed R H (Strong dust collection mode) to the second rotation R L This is used to allow the unit to rotate by inertia when switching to (medium dust collection mode).

[0063] The first operating mode consumes a constant amount of power regardless of the dust collection position. The second operating mode reduces the power consumption of the dust collector 30 compared to the first operating mode. This leads to a reduction in the power consumption of the resin molding apparatus 100. Furthermore, the third operating mode further reduces power consumption during deceleration compared to the second operating mode, and also allows for the miniaturization or elimination of components such as resistors used to consume 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 Figures 1 and 5. The operations shown below are performed by a control device CTL provided in the supply module 2, for example, which controls each part of the resin molding apparatus 100. The control device CTL is a dedicated or general-purpose computer having a CPU, internal memory, input / output interface, AD converter, etc. Figure 5 is a simplified representation of the operation of the resin molding apparatus 100. In reality, the pre-molding substrate / resin material supply process ("loading" in Figure 5), the resin molding process ("molding" in Figure 5), the resin molded product discharge process, the unwanted resin removal process, and the resin molded product storage process ("unloading" in Figure 5) are performed in parallel.

[0065] In the following resin molding operation, dust is collected at all times from the dust collection port H1 of the resin delivery unit 81 and the dust collection port H3 of the resin storage unit 84. 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 unit 81 and the dust collection port H3 of the resin storage unit 84 is turned off.

[0066] (1) Substrate and resin material supply process before molding The substrate delivery unit 71 sends the unmolded substrates W in the magazine to the substrate supply unit 72. The substrate supply unit 72 aligns the received unmolded substrates W in a predetermined direction and hands them over to the loader 5. In parallel with this, the resin delivery unit 81 sends the resin material J received from the stocker 84 to the resin arrangement unit 82. The resin supply unit 83 hands over the required number of resin materials J (4 in Figure 1) arranged by the resin arrangement unit 82 to the loader 5.

[0067] Next, the loader 5 simultaneously transports the two unmolded substrates W and the four resin material J to the press section 1. The loader 5 supplies the unmolded substrates W to the mounting section 11a of the lower mold 11, and the resin material J to the inside of the pot 11b formed in the lower mold 11.

[0068] In this pre-molding substrate / resin material supply process, the inverter 32 controls the motor 31a to a second rotational speed R L The system is controlled to be in medium dust collection mode. The switching mechanism 34 also 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. Also, when the resin arrangement 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 arrangement unit 82. At all 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 Subsequently, the upper mold 12 and the lower mold 11 are clamped together using the mold clamping mechanism 13. Then, the resin material J in each pot 11b is heated and melted to generate a fluid resin, which is then pressed by a plunger. As a result, the fluid resin is injected into the cavity formed between the upper mold 12 and the lower mold 11. Subsequently, the fluid resin is heated for the time required for curing to harden it and form a cured resin. As a result, the electronic components in the cavity and the surrounding substrate are sealed within the cured resin (sealing resin) which is molded to correspond to the shape of the cavity.

[0070] In this resin molding process, the inverter 32 controls the motor 31a to a second rotational speed R L The system is controlled to enter a medium dust collection mode. The switching mechanism 34 also switches the system so that dust is collected from the dust collection ports H1 to H4 of the resin supply module 8. Specifically, the switching mechanism 34 switches the system 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.

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

[0072] Here, 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 controls the motor 31a to the first rotational speed R H The system is controlled to enter strong dust collection mode. The switching mechanism 34 also switches the system so that dust is collected from the dust collection port H5 of the mold cleaner unit 9. This dust collection by the dust collection port H5 starts before or simultaneously with the start of cleaning by the mold cleaner unit 9. When cleaning by the mold cleaner unit 9 is completed, the inverter 32 disconnects the electrical connection to the motor 31a, allowing the motor 31a to rotate by inertia and transition to medium dust collection mode.

[0074] (4) Unnecessary resin removal process The unloader 6 then places the unloaded resin molded product P onto the stage section 41a of the unwanted resin removal mechanism 41. Once the resin molded product P is placed on the stage section 41a, the unwanted resin K from the resin molded product P is removed. At least one of the following events, either before or after the removal of the unwanted resin K, the resin molded product P is cleaned by the molded product cleaner section 10.

[0075] At this time, the inverter 32 controls the motor 31a to the first rotational speed R H The system is controlled to enter strong dust collection mode. The switching mechanism 34 also switches the system so that dust is collected from the dust collection port H6 of the molded product cleaner unit 10. This dust collection by the dust collection port H6 starts 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 disconnects the electrical connection to the motor 31a, allowing the motor 31a to rotate by inertia and transition to medium dust collection mode.

[0076] (5) Resin molded product storage process Subsequently, the resin molded product (product section), from which the unwanted resin K has been removed by the unloader 6, is stored in the resin molded product storage section 42 of the unloading module 4.

[0077] <7. Effects of this embodiment> According to the resin molding apparatus 100 of this embodiment, the rotational speed of the motor 31a is set to a first rotational speed R H Controlled to the first rotation speed R H When reducing the rotational speed, the electrical connection to the motor 31a is disconnected, allowing the motor 31a to rotate by inertia. This reduces the power consumption of the dust collector 30 used in the resin molding apparatus 100.

[0078] In particular, a large amount of dust is generated when cleaning the lower mold 11 and upper mold 12 with the mold cleaner unit 9. Therefore, when cleaning the lower mold 11 and upper mold 12, the inverter 32 sets the rotation speed of the motor 31a to the first rotation speed R. H Because it is controlled in this way, it can exhibit high dust collection capacity and efficiently collect dust. In addition, the inverter 32 controls the first rotation speed R H When reducing the rotational speed, there is no need for deceleration control, and the processing of regenerative energy generated during that deceleration control can be reduced or eliminated. As a result, components such as resistors used to absorb regenerative energy can be miniaturized or eliminated.

[0079] Furthermore, when cleaning the resin molded product P with the molded product cleaner unit 10, a large amount of dust may be generated. During this 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 Because it is controlled accordingly, it can exhibit high dust collection capacity and efficiently collect dust. As a result, the quality of the resin molded product P from which unwanted resin has been removed can be improved.

[0080] <8. Other Modified Embodiments> However, the present invention is not limited to the embodiments described above.

[0081] For example, in the above embodiment, the first rotational speed R H and the second rotation speed R L The configuration was designed to switch between two stages, but it would also be possible to add other rotation speeds to create a configuration with three or more stages of switching.

[0082] In addition to the speed search function of the inverter 32, the rotational speed of the motor 31a, which is rotating by inertia, may also be detected by providing a rotation sensor on the motor 31a or the like to detect the rotational 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 a configuration in which two or more resin molding modules 3 are connected is also possible. Furthermore, the resin molding apparatus does not have to be modularized into individual modules as in the above embodiment.

[0084] Furthermore, it goes without saying that the present invention is not limited to the embodiments described above, and various modifications are possible without departing from its spirit. [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...molding mold H1~H6...Dust collection port 9. Molding Cleaner Section 10. Molded product cleaner section 30. Dust collector 31. Blower 31a...motor R H ...First rotation R L ...2nd rotation 32...Inverter 33... Connecting pipes 34. Switching mechanism

Claims

1. A dust collector that collects dust from one or more dust collection ports provided in a resin molding apparatus, It comprises a motor-driven blower and an inverter that controls the rotation speed of the motor, and collects dust from a dust collection port provided in the mold cleaner section 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, it disconnects the electrical connection to the motor and allows the motor to rotate by inertia. The inverter switches the rotational speed of the motor between a first rotational speed and a second rotational speed lower than the first rotational speed, and when switching from the first rotational speed to the second rotational speed, the electrical connection to the motor is disconnected, allowing the motor to rotate by inertia, in a dust collection device.

2. This device collects dust from a dust collection port located in the molded product cleaner section used to clean resin molded products. The dust collection 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 electrical connection to the motor is released and the motor is allowed to rotate by inertia.

3. The dust collector according to claim 1, wherein the inverter controls the rotational speed of the motor to the second rotational speed after the rotational speed of the motor has reached the second rotational speed due to inertia.

4. This system collects dust from a dust collection port provided in the resin supply module of the aforementioned resin molding apparatus. The dust collection device according to claim 1, wherein when the inverter collects dust from a dust collection port provided in the resin supply module, it disconnects the electrical connection to the motor and allows the motor to rotate by inertia, or controls the rotational speed of the motor to the second rotational speed.

5. A connecting pipe that connects the multiple dust collection ports and the blower, The dust collection device according to claim 1, further comprising a switching mechanism provided in the connecting pipe for switching the dust collection port from which dust is collected by the blower.

6. The dust collection device according to claim 5, wherein the rotation speed of the motor is set to correspond to the dust collection port that can be switched by the switching mechanism.

7. The dust collector according to claim 1, wherein when the inverter controls the motor from a state of inertial rotation to the first rotational speed, it detects the rotational speed of the motor and resumes power supply to the motor based on the detected rotational speed.

8. A resin molding module that transfers resin material onto an object to be molded using a pair of molds, A mold cleaner unit for cleaning the aforementioned mold, A resin molding apparatus comprising a dust collection device according to any one of claims 1 to 7.

9. A method for manufacturing a resin molded product using the resin molding apparatus described in claim 8, A supply step of supplying the object to be molded and resin material to the mold, A resin molding process in which resin molding is performed on the object to be molded, A method for manufacturing a resin molded product, comprising a discharge step of dischargering the resin-molded product from the mold.

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