JP2010149306A - Metering feeding method and apparatus of liquid resin material used for compressed resin sealing molding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently feed a certain amount of resin weighed with high accuracy, into a lower mold cavity of a mold, when resin sealing molding electronic parts using a small compressed resin sealing molding apparatus. <P>SOLUTION: The metering feeding apparatus includes a storing part 100 for a liquid resin material, a metering part 300 for the liquid resin material, a discharge part 400 for the certain weighed amount of the liquid resin material, a compressed air feed part 500 to the discharge part 400 for the liquid resin material, and a passage switching part 600. Respective communication passages 601 between: the storing part 100 for the liquid resin material and the metering part 300; the metering part 300 and the discharge part 400; and the discharge part 400 and the compressed air feed part 500 are connected or cut off through the passage switching part 600, to transfer the liquid resin material 200 in the storing part 100 to the metering part 300 so as to be weighed. Then the certain weighed amount of the liquid resin material 201 is fed to the lower mold cavity through the discharge part 400, and compressed air is fed to the passage switching part 600 and discharge part 400 to efficiently prevent part of the certain amount of the liquid resin material from remaining at that part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a liquid resin material metering method used for compression resin sealing molding for molding and molding small electronic components such as semiconductor elements with a resin material, and a liquid resin material metering device using this method In particular, the quantitative measurement of the liquid resin material was performed with high accuracy, and the fixed amount of the liquid resin material was improved so that it could be efficiently and quickly supplied into the compression resin sealing mold. About things.

In the case of molding a small resin molded product, for example, a resin lens, in order to improve the effective utilization rate of the liquid resin material, a preliminary molded product is measured in advance by measuring the amount of resin necessary for molding the lens. Next, the preliminarily molded product is supplied into a mold and a lens having a predetermined shape is molded.
For example, as shown in FIG. 11, first, the liquid resin material 2 plasticized by the plasticizing mechanism 1 is extruded while being stirred by the screw 11 in the plasticizing mechanism and placed in a cylinder 3 provided in the vertical direction. Then, the liquid resin material 21 in the cylinder 3 is transferred upward while being pressurized by the piston 30 and discharged from the discharge port 31 provided at the upper end of the cylinder to the upper surface position of the plate 4. Next, the resin material 22 discharged on the upper surface of the plate 4 is cut by the cutter 5 so that the fixed amount of the resin material 22 (preliminary molded product) is supplied into a molding die (not shown). A configured resin material measuring device has been proposed (see Patent Document 1).
Also, a liquid thermosetting resin material is supplied into the lower mold cavity of the compression resin sealing mold comprising both upper and lower molds, and the electronic components on the substrate are immersed in the liquid resin material. A so-called compression resin sealing molding (compression molding) method of an electronic component is adopted in which a predetermined heating and mold clamping pressure is applied to the material to mold the electronic component with a resin. Usually, a dispenser is used to supply the liquid thermosetting resin material into the cavity. For example, the main body of the dispenser is installed so as to be able to advance and retreat between the upper and lower molds, and when the upper and lower molds are opened, the dispenser main body enters between the upper and lower molds, and a predetermined amount is supplied from the tip nozzle of the dispenser. A liquid thermosetting resin material is discharged (see, for example, Patent Document 2).
Japanese Patent Laid-Open No. 2008-190996 (FIGS. 1 and 4) JP 2003-165133 A (page 4, column 5, lines 7-14, FIG. 9, FIG. 11, etc.)

According to the configuration of the resin material metering device disclosed in Patent Document 1, the amount of the resin material 22 discharged to the upper surface position of the plate 4 is determined by the upward movement length of the piston 30 in the upper and lower cylinders 3. Therefore, we can expect high-precision weighing.
On the other hand, in the configuration of such a weighing device, since it is necessary to provide the plasticizing mechanism 1 and the like, there is a problem that the overall device shape is necessarily increased in size.
Further, in the configuration of the resin material measuring device, first, the resin material is melted by heating and frictional heat while stirring with the screw 11 to generate the liquid resin material 2 having fluidity, and then the liquid resin material. Is injected into and filled in the upper and lower cylinders 3, and then the liquid resin material 21 in the upper and lower cylinders is discharged to the upper surface position of the plate 4. The molded product (22) is formed, and the preliminary molded product is supplied into the mold. Therefore, the resin material is heated and melted and the liquid resin material is metered. There is a problem that a series of resin material measurement, such as a process of performing a cutting process and supplying the cut discharged resin material into a mold, and temperature control of the resin material in each process of the supply become troublesome.
Further, this resin material measuring device first measures the amount of resin required for molding to form a preliminary molded product, and then supplies the preliminary molded product into a molding die. Since it is used when resin molding is performed, it is not suitable for measuring the quantity of liquid resin material and supplying that quantity of liquid resin material to a predetermined supply location in a liquid state with fluidity. However, there is a problem that it is practically impossible to adopt this.

Moreover, according to the structure of the resin material supply apparatus using the dispenser disclosed by the said patent document 2, there exists the following problems.
When a liquid thermosetting resin material is used as a material for resin-sealing an electronic component, for example, when a light emitting diode (LED chip) mounted on a semiconductor substrate is sealed with a silicone resin, Since there is a problem in resin molding that the liquid thermosetting resin material is cured in a short time, the operation of supplying the liquid thermosetting resin material into the lower mold cavity and the light emitting diode on the substrate in the lower mold cavity It is necessary to perform the operation of immersing in the liquid thermosetting resin material quickly and efficiently.
That is, when the supply operation of the liquid thermosetting resin material into the lower mold cavity is not performed quickly, the thermosetting reaction is promoted to become a high viscosity state, so that the liquid is applied to every corner in the lower mold cavity. The thermosetting resin material cannot be supplied uniformly, and as a result, a problem such as insufficient resin filling in the lower mold cavity occurs. In addition, if the light emitting diode is immersed in the liquid thermosetting resin material in a high viscosity state, the gold wire may be deformed or cut, and as a result, the resin is in a state of poor electrical connection. A serious adverse effect on the resin sealing molding that the sealing molding is performed occurs.
In addition, when using a large compression resin sealing molding device in which a plurality of cavities are provided between the upper and lower molds, and a substrate is loaded and set in each of these cavities, liquid thermosetting is performed in each cavity. The thermosetting resin material is supplied, and the thermosetting resin materials in the cavities at the time when all the resin material supply steps are finished have different viscosities. For this reason, the step of immersing the light-emitting diode in the liquid thermosetting resin material cannot be performed under uniform conditions, and as described above, the gold wire of the light-emitting diode immersed in the resin material is not used. Compressed resin seals for electronic parts with uniform, high quality and high reliability, such as deforming or cutting them to cause resin sealing molding with poor electrical connection. There is a serious problem in resin molding that it is impossible to efficiently and reliably mold a stop-molded product.
In the case of using a large compression resin sealing molding apparatus, for example, by simultaneously performing the supply operation of the liquid thermosetting resin material into each cavity, the liquid thermosetting resin material in each cavity is Viscosity can be made uniform. However, in this case, there is a problem that the overall apparatus structure is further complicated or the overall shape is further increased because it is necessary to increase the number of dispensers described above.

The present invention relates to a liquid resin material metering method capable of efficiently supplying a fixed amount of a liquid resin material to a mold for compression resin sealing molding of an electronic component while maintaining its fluidity, and a liquid resin material using this method. The object is to provide a metering supply device.
The present invention also provides a liquid resin material metering method and a compact metering device using this method, which can be preferably implemented by being incorporated in a compacted resin compression molding apparatus for electronic components. It is intended to do.

The invention according to claim 1 for solving the above-described problem is that a single substrate set lower mold cavity is disposed in a resin-sealing mold for electronic parts including at least upper and lower molds, and the substrate is placed on the substrate. The mounted electronic component is immersed in the liquid resin material supplied into the lower mold cavity, and a predetermined heating action and pressurizing action are applied to the liquid resin material to compress and mold the electronic component on the substrate. A method for metering and supplying the liquid resin material used in the method comprising:
A liquid resin material storage process for storing the liquid resin material in the storage part,
Next, the liquid resin material stored in the storage unit is transferred to the measuring unit through the passage switching unit, and the liquid resin material is quantitatively measured to measure the quantitative amount.
Next, a quantitative liquid resin material discharging step of transferring the quantitative liquid resin material that has undergone the quantitative measurement process to the discharge portion through the passage switching unit,
Next, a discharge process of the stagnant liquid resin material is performed in which compressed air is supplied to the passage switching section and the discharge section to discharge the stagnant liquid resin material in the passage switching section and the discharge section to the outside. To do.

  Further, the invention according to claim 2 for solving the above problem is that the liquid resin material stored in the storage section between the liquid resin material storage step and the liquid resin material quantitative measurement step described above. And pressurizing and transferring the liquid resin material that is transferred to the measuring portion side in a state where the pressure is applied.

  Further, the invention according to claim 3 for solving the above-mentioned problems is the liquid resin material storage step, the liquid resin material quantitative measurement step, the quantitative liquid resin material discharge step, and the accumulated liquid resin material discharge. In all or some of the steps, a temperature control step of the liquid resin material for cooling or heating the liquid resin material is performed.

  The invention according to claim 4 for solving the above-described problem is characterized in that the liquid resin material described above is a liquid thermosetting resin material used for sealing molding of electronic parts.

According to a fifth aspect of the present invention for solving the above-mentioned problem, a single substrate setting lower mold cavity is disposed in a resin sealing molding mold of an electronic component consisting of at least both upper and lower molds, and the substrate The electronic component mounted on the substrate is immersed in the liquid resin material supplied into the lower mold cavity, and a predetermined heating action and pressure action are applied to the liquid resin material to seal the electronic component on the substrate with a compression resin seal. A metering and feeding device for the liquid resin material used in a resin sealing molding device for stationary molding,
A liquid resin material reservoir for storing the liquid resin material;
A liquid resin material metering unit for measuring the liquid resin material in the reservoir and measuring the quantity;
A discharge part of a quantitative liquid resin material for transferring the liquid resin material measured by the measurement part into the lower mold cavity;
A compressed air supply unit to the discharge unit;
The liquid resin material reservoir and the liquid resin material metering unit, or the liquid resin material metering unit and the metered liquid resin material ejection unit, or the metered liquid resin material ejection unit and the compressed air supply unit. And a passage switching unit having a communication passage for connecting the two.

  According to a sixth aspect of the present invention for solving the above problem, the liquid resin material stored in the storage section is pressurized to the liquid resin material storage section and transferred to the measuring section side. It is characterized in that a pressure transfer means for the resin material is arranged.

  According to a seventh aspect of the invention for solving the above-described problem, the liquid resin material measuring section is closely fitted in a cylinder connected in communication with the communication path of the path switching section. It is characterized by comprising a mounted plunger and a reciprocating drive mechanism for reciprocatingly driving the plunger.

  According to an eighth aspect of the invention for solving the above problem, the liquid resin material to be measured by the liquid resin material measuring section is reciprocated by a plunger closely fitted in the cylinder. It is set based on the moving stroke length.

  In addition, the invention according to claim 9 for solving the above-mentioned problems includes all of the liquid resin material storage section, the liquid resin material measuring section, the quantitative liquid resin material discharge section, and the compressed air supply section. The liquid resin material is provided with temperature management means for cooling or heating the liquid resin material at a part or a part of the part.

  Further, in the invention according to claim 10 for solving the above-described problem, the liquid resin material storage part, the liquid resin material measuring part, and the quantitative liquid resin material discharge part are detachable from the apparatus main body. It is comprised so that it may become.

When using the liquid resin material metering method and apparatus according to the present invention, the liquid resin material can be quantitatively measured with high accuracy, and the liquid resin material of the quantitative amount of the electronic component can be maintained while maintaining its fluidity. It can be efficiently and reliably transferred and fed into the lower mold cavity in the compression resin sealing mold.
In addition, since the shape of the metering device can be simplified and reduced in size, it can be suitably implemented by incorporating it into a compression resin sealing molding device for electronic components that have been miniaturized in a desktop mold or the like. And operability can be improved.
In addition, since the replacement work for the components of the metering supply device is facilitated, it is possible to immediately adapt to the change in the liquid resin material to be weighed, and the maintenance and inspection work of the metering supply device can be simplified.
Further, since the quantitative measurement of the liquid resin material and the supply time of the quantitative liquid resin material can be shortened, the temperature management for the liquid resin material can be performed efficiently and reliably.
Furthermore, it is possible to efficiently and reliably prevent the liquid resin material from remaining in the metering supply device. It is possible to prevent the occurrence of problems such as the above-mentioned problems and the supply of different types of liquid resin materials into the lower mold cavity.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 schematically shows the overall shape of a compression resin sealing molding apparatus for electronic parts equipped with a liquid resin material metering device according to the present invention, and FIG. 2 shows a liquid resin material metering device. FIGS. 3 to 5 are explanatory diagrams for the metering and supply of the liquid resin material, and FIG. 6 is an explanatory diagram for the gate nozzle provided in the discharge unit in the metering and feeding device. FIG. 7 to FIG. 10 are explanatory diagrams for the compression resin sealing molding of electronic parts.

  First, the liquid resin material metering device A according to the present invention will be described in detail with reference to FIGS.

  In the liquid resin material metering apparatus A, a storage unit 100 for storing the liquid resin material 200 having fluidity, and the liquid resin material 200 stored in the storage unit 100 are measured and its quantity is measured. The liquid resin material metering unit 300, the metered liquid resin material discharge unit 400 weighed by the metering unit 300, the compressed air supply unit 500 to the discharge unit 400, and FIG. As shown in the figure, a communication path 601 for connecting the storage unit 100 and the metering unit 300, or the metering unit 300 and the discharge unit 400, or the discharge unit 400 and the compressed air supply unit 500 in a communication state. And a passage switching unit 600 having the shape shown in FIG.

  The liquid resin material storage unit 100, the liquid resin material metering unit 300, and the metered liquid resin material discharge unit 400 are detachable from the main body of the metering supply device A, as will be described later. It is mounted so that

The passage switching unit 600 is disposed at the center of the insert plate 700.
As shown in FIG. 2 (2), the passage switching unit 600 includes a cylindrical mounting member 701 disposed in the front-rear direction in the figure, and a rotatable and densely (within the cylindrical mounting member). And a rotation control mechanism 603 such as a servo mechanism for controlling the rotation of the branch valve member to a predetermined rotational angle position (see FIG. 1 (2)). ) Is provided.
The cylindrical mounting member 701 is fixed to the insert plate 700 by an appropriate rotation stop member (not shown). Therefore, the cylindrical mounting member is prevented from rotating with respect to the insert plate 700. Is provided.
In addition, a communication port 702 with the reservoir 100 side is located at an upper position of the cylindrical mounting member 701 on the virtual same circumference line, a communication port 703 with the discharge unit 400 side is located at a lower position, and One side position (right side in the figure) has a communication port 704 with the measuring unit 300 side, and the other side position (left side in the figure) has a connection with the compressed air supply unit 500 side. A communication port 705 is formed.
Further, when the branch valve member 602 is rotated in response to an instruction from a control unit (not shown), as described above, the position of the communication path 601 formed in the branch valve member 602 is the storage unit 100 and the metering unit 300. Alternatively, the metering unit 300 and the discharge unit 400, or the discharge unit 400 and the compressed air supply unit 500 are connected in communication.

The liquid resin material reservoir 100 is mounted so as to be detachable from a connection hole 706 with an upper communication port 702 in a cylindrical mounting member 701 fitted to the insert plate 700.
In the illustrated example, a resin cylinder 101 having one end (upper end) opened is used, and the connection portion 101a at the other end (lower end) is closely fitted to the connection hole 706.
In a normal case, the cylinder 101 is held on the upper surface of the insert plate 700 via a cylinder guide 102 and a fixing member 103 of the cylinder guide. However, when replacing the cylinder 101, only the cylinder 101 is removed from the cylinder guide 102. It is provided so that it can be extracted.
The cylinder 101 is exemplified as a small one that can store a small amount of the liquid resin material 200 or an amount necessary for several times of measurement. 2 may be performed, for example, as shown in FIG. 2 (1), a liquid resin material storage tank 104 or the like may be directly attached to the upper end opening of the cylinder 101. A configuration may be adopted in which the upper end opening of the cylinder 101 and the liquid resin material container are connected in communication via an appropriate feed path (not shown).

The liquid resin material measuring section 300 is mounted so as to be detachable from a mounting hole 707 provided to communicate with the communication port 704 in the cylindrical mounting member 701 fitted to the insert plate 700. ing.
In the illustrated example, a resin cylinder 301 having one end (right end) opened is used, and the connection portion 301a at the other end (left end) is closely fitted to the mounting hole 707.
The cylinder 301 is fixed to one end surface (right side surface) of the insert plate 700 via a fixing member 302. When replacing the cylinder 301, the cylinder 301 is removed by removing the fixing member 302. It is provided so that it can be extracted from.
Further, in this cylinder 301, a resin plunger 304 having a sealing member 303 made of elastic rubber or the like fixed at the tip (left end) portion is closely fitted.
Further, the plunger 304 is fitted in a state in which the plunger 304 can reciprocate (moves left and right) in the cylinder 301, and the reciprocating position of the plunger can be controlled via a reciprocating drive mechanism 305 such as a servo mechanism. Is provided.
The position control with respect to the plunger 304 measures the amount of liquid resin material sucked and transferred into the cylinder corresponding to the plunger movement stroke length for moving the plunger in the right direction in the figure, as will be described later. Therefore, the amount of the liquid resin material sucked and transferred into the cylinder 301 can be appropriately changed and selected by appropriately changing the moving stroke length of the plunger.
The tip shape of the sealing member 303 may be formed corresponding to the inner surface shape of the connecting portion 301a of the cylinder. When such a seal member is used, there is an advantage that the whole amount of the liquid resin material sucked and transferred into the 301 can be transferred to the outside of the cylinder.

Further, the discharge portion 400 of the quantitative liquid resin material is attached to the insert plate 700 so as to be detachable.
In the illustrated example, a fixed amount of liquid resin material weighed by the weighing unit 300 is efficiently and quickly transferred into the lower mold cavity of a compression resin sealing molding apparatus B for electronic components to be described later. The case where it is comprised from the nozzle structure for supplying is shown.
In addition, a metering liquid resin material introduction port 402 is opened at one end (upper end) of the discharge part 400. The introduction port 402 is connected to a lower communication port 703 formed in the cylindrical mounting member 701 and the lower communication port. The insert plate 700 is formed so as to communicate with the connection hole 708 of the insert plate 700.
Further, the introduction port 402 of the discharge unit is connected in communication with a discharge port 403 opened at the other end (lower end), so that the liquid resin material introduced into the introduction port 402 flows down immediately and the discharge port It is provided so as to be discharged and transferred smoothly from 403 downward.

  The compressed air supply unit 500 includes a communication port 705 formed in the cylindrical mounting member 701, a connection hole 709 of the insert plate 700 formed so as to communicate with the communication port 705, and the connection hole 709 and the compression hole 709. A case is shown in which a compressed air supply path 501 and the like are connected in communication with an air tank (not shown) side.

  The operation based on the configuration of the liquid resin material metering apparatus A will be described below.

  First, a liquid resin material storage step for storing the liquid resin material 200 in the storage unit 100, and the liquid resin material 200 stored in the storage unit 100 is transferred to the measuring unit 300 via the passage switching unit 600 and then transferred to the measuring unit 300. The quantitative measurement process of the liquid resin material that measures the quantity by measurement will be described in detail.

In order to perform the liquid resin material storing step, for example, as shown in FIG. 3 (1), the plunger 304 is moved to the left side in advance via a reciprocating drive mechanism 305 in the measuring unit 300 and a seal member at the tip of the plunger 304 is moved. 303 is moved to the left end in the cylinder 301.
In the above-described state, the liquid resin material 200 can be stored by supplying and filling the liquid resin material 200 into the cylinder 101 of the storage portion 100.
In the illustrated example, a small cylinder 101 that stores a small amount of the liquid resin material 200 or an amount necessary for performing multiple measurements is shown. For example, the liquid resin material 200 is stored in the cylinder 101. By setting 200 to be continuously supplied and filled, the metering of the liquid resin material 200 can be repeated continuously.

Next, the branch valve member 602 is rotated through the rotation control mechanism 603 of the passage switching unit 600, and one side of the communication passage 601 in the branch valve member is shown in FIGS. 3 (1) and 3 (2). As shown, by connecting the cylindrical mounting member 701 fitted to the insert plate 700 to the upper communication port 702 and connecting the other side to the right lateral communication port 704 of the cylindrical mounting member, The cylinder 101 and the cylinder 301 of the measuring unit can be connected in communication.
The quantitative measurement process of the liquid resin material is performed by moving the plunger 304 to the right side to a predetermined stroke length position via the reciprocating drive mechanism 305 in the measuring unit 300. That is, the amount of the liquid resin material is determined by the volume of the liquid resin material accommodated in the communication passage 601 in the branch valve member 602 and the communication port 704 in the cylindrical mounting member 701, and the plunger 304 in the cylinder 301 in the measuring unit 300. Can be determined by the sum total of the volume of the liquid resin material sucked and transferred into the cylinder.
Since the volume of the liquid resin material accommodated inside the communication path 601 and the communication port 704 is constant, for example, it is only necessary to transfer the amount obtained by subtracting this constant amount from the desired amount into the cylinder 301. Therefore, the plunger movement position for this purpose may be set as the movement stroke length of the plunger 304. As shown in FIG. 3 (2), the plunger 304 is moved by the preset stroke length, and the liquid resin material 200 in the cylinder 101 of the reservoir is sucked and transferred into the cylinder 301 of the measuring unit. The measured liquid resin material 201 is accommodated in the communication path 601, the communication port 704, and the cylinder 301.

Next, the quantitative liquid resin material discharge process for transferring the quantitative liquid resin material 201 that has undergone the quantitative measurement process to the discharge part 400 via the passage switching unit 600 will be described in detail.
In FIG. 4 (1), the liquid resin material 200 in the cylinder 101 is sucked and transferred into the cylinder 301 of the measuring unit by the above-described quantitative measurement process, and the quantitative measurement measured in the communication path 601, the communication port 704 and the cylinder 301 is performed. The state in which the liquid resin material 201 is accommodated is shown.
In this state, as in the previous step, the branch valve member 602 of the passage switching unit 600 is rotated, and one side of the communication passage 601 in the branch valve member is connected to the right lateral communication port 704 of the cylindrical mounting member 701. By connecting and connecting the other side to the lower communication port 703 of the cylindrical mounting member, the inside of the cylinder 301 of the measuring unit and the discharge unit 400 side can be connected in communication. At this time, the connecting portion 101a at the lower end of the cylinder is securely closed by the branch valve member 602.
As shown in FIG. 4 (2), the dispensing process of the quantitative liquid resin material is performed by moving the plunger 304 to the original position on the left side through the reciprocating drive mechanism 305 in the measuring unit 300.
That is, when the plunger 304 is returned to the original left position, the quantitative liquid resin material 201 in the cylinder 301, the communication path 601 and the communication port 704 is connected to the lower communication port 703 and the insert plate. It is introduced into the inlet 402 of the discharge section through the hole 708. The quantitative liquid resin material 201 introduced into the introduction port 402 immediately flows down and is smoothly discharged and transferred downward from the discharge port 403.
Accordingly, the quantitative liquid resin material 201 discharged / transferred through the discharge port 403 can be efficiently and rapidly supplied into the lower mold cavity 801 in the compression resin sealing molding apparatus B for the electronic components disposed below. (See FIG. 8).
It should be noted that the tip seal member 303 of the plunger 304 shown in the figure is not fitted to the inner surface of the connection portion 301a of the cylinder 301 when the plunger 304 is moved back (see FIG. 2 (3)). . For this reason, a part of the quantitative liquid resin material 201 may remain in the connection portion 301a during the above-described discharge process. Therefore, when it is necessary to transfer the entire amount of the liquid resin material in the cylinder 301 including the liquid resin material remaining in the connection portion 301a to the discharge unit 400 side, for example, the tip shape of the seal member 303 is By forming it corresponding to the shape of the inner surface of the connecting part 301a of the cylinder, the distal end portion of the seal member 303 is fitted to the inner surface of the cylinder connecting part 301a when the plunger 304 is moved back. The liquid resin material inside may be positively discharged to the discharge part 400 side.
Similarly, a part of the liquid resin material may remain in the right side communication port 704 as described above. For example, by inserting the tip of the seal member 303 into the communication port, This can be discharged to the discharge section 400 side.

Next, the compressed air 502 is supplied to the passage switching unit 600 and the discharge unit 400, and the accumulated liquid resin material in the passage switching unit 600 and the discharge unit 400 is discharged / supplied into the lower mold cavity 801 below. The discharging process of the staying liquid resin material will be described in detail.
5 (1) and FIG. 5 (2), after the dispensing process of the quantitative liquid resin material is completed, the branch valve member 602 of the passage switching unit 600 is rotated and the branch valve is turned in the same manner as the previous process. By connecting one side of the communication path 601 of the member to the lower communication port 703 of the cylindrical mounting member 701 and connecting the other side to the left side communication port 705 of the cylindrical mounting member, The state where the discharge part 400 side and the compressed air supply part 500 side are connected in communication is shown. At this time, the connecting portions 101a and 301a of both cylinders are surely closed by the branch valve member 602.
As shown in FIGS. 5 (1) and 5 (2), the discharge process of the stagnant liquid resin material supplies compressed air 502 into the connection hole 709 of the insert plate 700 through the compressed air supply path 501. Is done by. That is, the discharge part 400 side and the compressed air supply part 500 side are connected in communication, and the connecting parts 101a and 301a of both cylinders are securely closed by the branch valve member 602. Therefore, in this state, the compressed air 502 from the compressed air tank (not shown) is supplied into the connection hole 709 of the insert plate, thereby allowing the passage switching portion (communication path 601), the lower communication port 703, the connection hole 708, and the discharge. The stagnant liquid resin material 202 in the section (the flow path from the inlet port 402 to the discharge port 403) can be discharged and supplied into the lower mold cavity 801 below.
The lower mold in the compression resin sealing molding apparatus B below the liquid resin material to be quantified or the liquid resin material to be accumulated in the passage switching unit 600 or the discharge unit 400 by the discharging process of the accumulated liquid resin material. Since the liquid can be efficiently supplied into the cavity 801, the inside of the flow path from the passage switching portion where the liquid resin material flows to the discharge portion can be efficiently cleaned, and the stagnant liquid resin material leaks from the discharge portion. It is possible to efficiently prevent the so-called liquid leakage phenomenon.

In addition, an appropriate pressure transfer means (not shown) for the liquid resin material that pressurizes and transfers the liquid resin material 200 stored in the storage section to the measuring section 300 side is provided in the storage section 100 described above. It may be configured. With this configuration, the liquid resin material 200 stored in the storage section 100 is pressurized and transferred to the measuring section 300 side between the liquid resin material storage process and the liquid resin material quantitative measurement process. You may make it perform the pressurization transfer process of the resin material.
As described above, the action of transferring the liquid resin material 200 in the cylinder 101 of the reservoir into the cylinder 301 of the measuring unit is the suction force based on the negative pressure generated when the plunger 304 moves in the cylinder 301 of the measuring unit. However, the combined use of the above-described pressure transfer means for the liquid resin material can efficiently assist the transfer action of the metering section to the cylinder 301 side.
Specifically, for example, a plunger for pressurizing the liquid resin material is closely fitted in the cylinder 101 of the storage unit, and the pressurizing plunger is made to follow the suction transfer action by the plunger 304 of the measuring unit, or The liquid resin material 200 in the cylinder 101 of the storage portion may be set and configured to pressurize while cooperating with the suction transfer action.
Further, for example, the outer periphery of the reservoir cylinder 101 is sealed with a sealing case member, compressed air is supplied into the case member, and the liquid resin material 200 in the reservoir cylinder 101 is supplied to the compressed air. May be set and configured to pressurize.
When such a pressure transfer means is also provided, the liquid resin material can be efficiently transferred to the cylinder 301 side of the measuring unit. For example, a liquid resin material having high viscosity or low fluidity can be measured. Even in the case of supply, it is possible to respond quickly and appropriately.

Further, in the above-described embodiment, a temperature control step of the liquid resin material for cooling or heating the liquid resin material may be performed according to the properties of the liquid resin material to be measured.
That is, in all or a part of the liquid resin material storage process, the liquid resin material quantitative measurement process, the quantitative liquid resin material discharge process, and the stagnant liquid resin material discharge process, for example, In order to improve the fluidity of the metered liquid resin material, a step of heating the liquid resin material to an appropriate temperature may be performed.
When the liquid resin material to be weighed is a liquid resin material whose curing is accelerated even at room temperature, such as a liquid thermosetting resin material, in all or some of the above-described steps. The liquid resin material may be cooled to an appropriate temperature.
The temperature control process for the liquid resin material includes all or a part of the liquid resin material reservoir, the liquid resin material metering unit, the metered liquid resin material discharge unit, and the compressed air supply unit. Further, it can be easily carried out by providing an appropriate cooling mechanism of the liquid resin material or a heating mechanism thereof.

FIG. 6 shows a specific configuration example of the above-described quantitative liquid resin material discharge section 400 and also shows a case where the discharge section 400 is provided with a cooling mechanism for cooling the liquid resin material flowing inside. ing.
The discharge unit 400 is provided as a gate nozzle for supplying the quantitative liquid resin material 201 measured by the measuring unit 300 into the lower mold cavity 801 in the compression resin sealing molding apparatus B for electronic components.
A cooling water pipe 406 is connected to a cooling water introduction / discharge section 405 provided at the upper end of the gate nozzle main body 404, and a sleeve-like shape for circulating and circulating the cooling water W inside the gate nozzle main body 404. The cooling water channel member 407 is closely and integrally fitted.
In addition, a nozzle tip 408 for discharging the liquid resin material is fitted in the center of the cooling water channel member 407 in a detachable state. The nozzle tip 408 is formed in a shape that narrows downward, and the liquid resin material 201 (202) that flows down inside the nozzle tip 408 adheres to the inner surface of the nozzle tip and clogs. It is made of a material with water repellent properties for the purpose of preventing waking.
A holding member 409 for securely holding the nozzle tip in the cooling water channel member 407 is fixed to the upper end of the nozzle tip 408 in a detachable state. Further, when the nozzle tip 408 is held in the cooling water channel member 407 via the holding member, the introduction port (402) formed in the central portion of the holding member and the discharge port (403) of the nozzle chip are connected in communication. It is provided to be. When the liquid resin material 201 (202) is introduced into the introduction port (402), the liquid resin material is smoothly guided to the discharge port (403) side of the nozzle tip and immediately discharged downward.
In addition, the discharge unit 400 is installed in a detachable manner with respect to a fitting attachment / detachment unit 412 provided in the main body of the metering supply device A. Further, the nozzle tip 408 and the holding member 409 are installed in a detachable manner with respect to the cooling water channel member 407 as shown in FIG. 6 (2).
In this way, by installing the discharge unit 400 in a detachable and detachable state, for example, it is possible to select and employ a nozzle tip that is suitable for the properties of the resin material used before the resin molding operation. In addition, it is possible to efficiently clean and replace the nozzle tips after the resin molding operation. In particular, when using a thermosetting resin material, for example, when a part of the resin material adheres to the inner surface of the inlet (402) or the outlet (403) and becomes unusable. It is preferable that a quick response such as washing or replacement can be performed.
In the figure, reference numeral 410 denotes a seal member provided at the fitting / removal portion 412.

Further, the cylindrical mounting member 701 in the insert plate 700 of the above embodiment can be omitted by closely fitting and mounting the branch valve member 602 in the passage switching unit 600 to the insert plate 700.
In this case, there is an advantage that overall components can be reduced and the configuration can be simplified.

  In addition, the liquid resin material storage step, the liquid resin material quantitative measurement step, the quantitative liquid resin material discharge step, the stagnant liquid resin material discharge step, the plunger movement control, and the branch valve member rotation control in the above embodiment, It is possible to adopt a configuration in which a series of steps described above are automated based on an instruction from a preset control unit.

  In addition, although both cylinders (101, 301) in the above-described embodiment are made of resin, the material of both cylinders is, for example, made of metal or glass having heat resistance and durability. There is no problem.

Next, referring to FIG. 7 to FIG. 10, the outline of the compression resin sealing molding of the electronic component by the compression resin sealing molding device B of the electronic component equipped with the liquid resin material metering device A according to the present invention explain.
As described above, the compression resin sealing molding apparatus B for electronic parts has a miniaturized desktop structure. Therefore, the liquid resin material metering apparatus A according to the present invention is such a type. It can implement suitably, incorporating in a small compression resin sealing molding apparatus.

  As shown in FIG. 1 (1), the above-mentioned compression resin sealing and molding apparatus B includes a base 800 of the apparatus, tie bars 802 erected at four corners on the base, and a fixing plate at the upper end of the tie bar. A mold heat insulating plate (not shown) and an upper mold 804 for compression resin sealing molding mounted via an upper mold plate 803; a movable plate 805 fitted to a tie bar 802 at a position below the upper mold 804; The lower mold plate 807 mounted on the upper part of the plate via the lower mold heat insulating plate 806, the lower mold 808 for compression resin sealing molding installed on the lower mold plate, and the movable plate 805 are moved up and down. Thus, it is composed of a mold opening / closing mechanism 809 and the like by a servo motor or the like provided so that the opposing surfaces of the upper and lower molds 804 and 808 can be joined and separated.

Next, an outline of the compression resin sealing mold part will be described with reference to FIG.
The upper mold plate 803 and the lower mold plate 807 are provided with respective heaters for heating the upper mold 804 and the lower mold 808, and both the upper and lower plates mounted on the upper mold plate 803 and the lower mold plate 807 are provided. The molds 804 and 808 are provided with dedicated cooling means.
In addition, a release film tensioning mechanism (not shown) is provided on the upper surface of the movable plate 805 so as to stretch a film 810 for releasing a molded product on the mold surface of the lower mold 808 including the lower mold cavity surface. Yes.
The lower die 808 is provided with a single resin molding cavity 801 for loading and setting a small substrate, for example, a single piece of a square substrate 811 having a side of about 50 to 70 mm. Miniaturization of the mold and the structure of each component corresponding thereto are also miniaturized, so that a so-called desktop compression resin sealing molding apparatus is configured.

The upper die 804 is detachably mounted on a recess 812 provided on the bottom surface side of the upper die plate 803. Further, the upper mold is fixed in the recess through the fixing pin 813 and a downward pressing force is applied by the elastic projection output by the elastic member 814. Therefore, the upper mold 804 is recessed. It has a so-called floating structure that is urged away from the inner surface of 812 downward. The upper die 804 is normally provided with a gap S of about 1 mm between the inner surface of the recess 812.
In addition, a cartridge heater 815 for heating the upper die is installed in the upper die plate 803 so that the upper die plate 803 is constantly heated. Normally, the gap S between the upper die 804 and the recess 812 is used. The heating action on the upper mold is efficiently suppressed by the air heat insulation action by the.
A cooling water passage 816 for cooling the upper die is disposed in the upper die 804, and a cooling water introduction / discharge pipe 817 connected to a water supply / drainage pump (not shown) is connected to the cooling water passage. Has been. Therefore, when the upper mold 804 is cooled, cooling water can be introduced into the cooling water channel 816 of the upper mold through the introduction / discharge pipe 817 by operating the water supply / drainage pump. Conversely, when the upper mold 804 is heated, The cooling water in the upper mold cooling water channel 816 is provided through the introduction / discharge pipe 817 so as to be discharged to the outside of the upper mold 804.
Reference numeral 818 denotes a pilot pin projecting from the bottom surface of the upper die 804, and reference numeral 819 denotes an intake hole formed in the bottom surface of the upper die 804, which is provided so as to communicate with the inside of the recess 812.
In order to perform heating and cooling operations on the upper mold 804 more efficiently and quickly, for example, it is preferable to form the upper mold from a copper-based material having a high thermal conductivity.

In addition, a seal member 820 is disposed on the bottom surface of the upper mold plate 803 that is the outer periphery of the upper mold 804. The seal member 820 is bonded to both mold surfaces when the upper and lower molds 804 and 808 are clamped. It is provided so that the outer peripheries of the upper and lower molds can be sealed.
In addition, the upper plate 803 is provided with an intake passage 822 for connecting the seal range by the seal member 820 to the outside and for reducing the pressure of the seal range.
Further, the upper mold plate 803 is provided with an intake passage 821 that connects the inside of the recess 812 and the outside. Further, the intake passage 821 is connected in communication with a vacuum motor (not shown) disposed outside, and is provided so that the inside of the recess 812 can be decompressed by operating the vacuum motor.
When the pressure in the recess 812 is reduced by a vacuum motor, the upper mold 804 fitted in the recess rises against the elasticity of the elastic member 814 and is joined to the inner surface of the recess. Is provided. Therefore, the mechanism for joining the upper die 804 and the inner surface of the recess 812 is an upper die for applying a heating action by heat conduction from the upper die heating cartridge heater 815 provided on the upper die plate 803 to the upper die. A heating mechanism is configured. Reference numeral 823 denotes an upper guide pin.

In addition, when the upper and lower molds 804 and 808 are clamped, the seal range by the seal member 820 and the vacuum motor disposed outside are connected to each other via the intake passage 822. Therefore, by operating the vacuum motor, the sealing range by the seal member 820 can be reduced.
In addition, an intake hole 819 provided in the bottom surface of the upper die 804 and a vacuum motor disposed inside and outside the recess 812 of the upper die plate are connected to each other via an intake passage 821 to operate the vacuum motor. As a result, the pressure in the suction hole 819 and the recess 812 of the upper mold plate and the suction passage 821 can be reduced.
Therefore, the square substrate 811 can be supplied and set on the bottom surface of the upper die 804 by the suction action of the intake holes 819 based on this reduced pressure. At this time, since the square substrate 811 is positioned via the pilot pins 818 projecting from the bottom surface of the upper die 804, the square substrate becomes the bottom surface of the upper die 804 by this adsorption action and positioning action. It is surely mounted at a predetermined position.
Further, the adsorption action of the square substrate 811 and the pressure reduction action of the seal range by the seal member 820 can be performed separately and independently.

A floating plate 824 is installed on the upper surface of the lower mold plate 807.
Further, an elastic member 825 is interposed between the lower mold plate 807 and the floating plate 824, and the elasticity of the elastic member 825 is applied as a pressing force in a direction that separates the two in the vertical direction.
A lower mold 808 is fitted on the upper surface portion of the lower mold plate 807.
The lower mold 808 is fitted in a mounting hole 826 provided in the central portion of the floating plate 824 so as to be vertically slidable, and the outer peripheral surface of the lower mold and the inner peripheral surface of the mounting hole. A gap S for intake is formed between the two. Further, the lower die 808 is fixed to the mounting hole 826 via the fixing pin 827, and an elastic projection output in the direction of pushing the fixing pin 827 upward is applied by the elasticity of the elastic member 828. The lower mold has a so-called floating structure that is urged away from the upper surface of the lower mold plate 807, and is usually about 1 mm between the lower mold 808 and the upper surface of the lower mold plate 807. The gap S is set.
In addition, a cartridge heater 829 for heating the lower mold 808 is installed in the lower mold plate 807. Normally, the air insulation action by the gap S between the lower mold 808 and the upper surface of the lower mold plate 807 is provided. Thus, the heating action on the lower mold is efficiently suppressed.
In addition, a cooling water passage 830 for cooling the lower die is disposed in the lower die 808, and a cooling water introduction / discharge pipe 831 connected to a water supply / drainage pump (not shown) is connected to the cooling water passage. Has been. Therefore, when the lower mold 808 is cooled, cooling water can be introduced into the lower mold cooling water channel 830 through the introduction / discharge pipe 831 by operating the water supply / drainage pump. Conversely, when the lower mold 808 is heated, The cooling water in the lower mold cooling water channel 830 is provided to be discharged to the outside of the lower mold 808 through the introduction / discharge pipe 831.
In order to heat and cool the lower mold 808 efficiently and quickly, it is preferable to form the lower mold with a copper-based material having a high thermal conductivity.

The lower die 808 is fitted in the mounting hole 826 of the floating plate 824 so as to be vertically slidable, and a gap S is provided between the lower die 808 and the upper surface of the lower die plate 807. In addition, both the lower mold plate 807 and the floating plate 824 are fitted via a seal member 833.
Further, the lower mold plate 807 is provided with an intake passage 834 for connecting the mounting hole 826 and the gap S to the outside, and this intake passage 834 is further provided with a vacuum motor (not shown) provided outside. It is connected to the communication. Accordingly, the mounting hole 826 and the gap S can be decompressed by operating the vacuum motor.
Further, when the pressure in the mounting hole 826 and the gap S is reduced by the vacuum motor, the lower mold 808 fitted in the mounting hole 826 is opposed to the elastic projection output by the elastic member 828. It is provided so as to descend to the upper surface of 807 and to be joined to the upper surface. Therefore, the mechanism for joining the lower mold 808 and the lower mold plate 807 constitutes a lower mold heating mechanism for applying a heating action by heat conduction from the cartridge heater 829 of the lower mold plate 807 to the lower mold.

  Next, the operation based on the configuration of the above embodiment will be described in detail.

First, as shown in FIG. 7, the cooling water W is introduced and circulated into the discharge part 400 in the metering supply apparatus A and the upper mold 804 and the lower mold 808 in the compression resin sealing molding apparatus B to bring each into a cooled state. Further, the upper mold plate 803 and the lower mold plate 807 are heated to the resin molding temperature by the heating action of the cartridge heaters 815 and 829.
At this time, since the gap S is maintained between the upper and lower mold plates 803 and 807 and the upper and lower molds 804 and 808, both the upper and lower molds are heated by the cartridge heaters by the air insulation action by the gap. The action is effectively suppressed.
In this state, as shown in FIG. 7, the upper and lower molds 804 and 808 are opened, and a release film 810 is supplied to the surface of the lower mold 808 via a release film stretching mechanism (not shown).

  Next, using the metering supply device A, as described above, the storage step of the liquid resin material 200 for storing the liquid resin material in the storage unit 100 is performed, and then the storage unit 100 is connected to the storage unit 100 via the passage switching unit 600. The stored liquid resin material 200 is transferred to the measuring unit 300, and the quantitative measurement process of the liquid resin material for measuring the quantity by measuring this is performed, and then the quantitative measurement process is performed via the passage switching unit 600. The liquid resin material 201 is transferred to the discharge unit 400, and the quantitative liquid resin material 201 is discharged. Next, the compressed air 502 is supplied to the passage switching unit 600 and the discharge unit 400, and the inside of the passage switching unit 600 is discharged. By discharging the stagnant liquid resin material 202 in the section 400 downward and supplying the stagnant liquid resin material 202, the entire amount of the fixed liquid resin material 201 and the stagnant liquid resin material 202 is reduced to the lower compression resin. Supply into the lower mold cavity 801 in the sealing molding apparatus B (See Figure 8).

As described above, the liquid resin material (201/202) supplied from the discharge unit 400 into the lower mold cavity 801 is subjected to high-precision quantitative measurement. Then, it is supplied into the lower mold cavity 801 through a release film 810 stretched on the mold surface.
At this time, since the cooling water W is introduced into the gate nozzle body 404 and the cooling water channel member 407 of the discharge part 400, it flows in and flows down from the introduction port 402 of the discharge part and downwards from the discharge hole 403. The supplied liquid resin material can be cooled.
Therefore, for example, when the liquid resin material (201/202) is a thermosetting resin material, the thermosetting reaction can be efficiently suppressed. Therefore, the thermosetting resin material is contained in the lower mold cavity 801. Even if it is supplied, the fluidity is maintained, and the inside of the lower mold cavity smoothly flows and is uniformly supplied and filled to every corner.

  In FIG. 8, simultaneously with the supply of the liquid resin material (201/202) into the lower mold cavity 801, the heating state of the lower mold 808, which will be described later, and the release film 810 are fitted to the lower mold surface. Indicates the state.

Next, as shown in FIG. 9, the rectangular substrate 811 is supplied and set at a predetermined position on the bottom surface of the upper die 804, and the movable plate 805 is raised to seal the upper surface of the floating plate 824 and the seal member 820 on the bottom surface of the upper die plate 803. The first mold clamping is performed.
The supply set of the square substrate 811 has an adsorption action from the suction hole by operating a vacuum motor (not shown) to depressurize the recess 812 of the upper mold plate and the upper mold suction hole 819 communicating with the recess 812. And a pilot pin 818 projecting on the bottom surface of the upper mold (see FIG. 7), the main body of the square substrate 811 is attracted to a predetermined position on the bottom surface of the upper mold and mounted on the opposite surface. This is performed by adsorbing the electronic component 832 in a state of being on the lower side.
Further, at the time of the first mold clamping, since the outer periphery of the lower mold cavity 801 between the mold surfaces of the upper and lower molds 804 and 808 is sealed by the seal member 820, the outside air is blocked.
At this time, the bottom surface of the square substrate 811 is not joined to the upper surface of the floating plate 824. Therefore, the air and liquid resin material (201/202) within the above-mentioned seal range are caused by the pressure reducing action in the lower mold cavity 801. It is possible to reduce the pressure between the upper and lower mold surfaces that efficiently and forcibly discharge bubbles contained therein.

Next, or simultaneously with the supply set of the square substrate 811 described above, the upper die 804 is heated by the cartridge heater 815 to heat the upper die to the resin molding temperature.
The heating of the upper mold 804 reduces the pressure in the gap S between the upper mold and the inner surface of the recess 812, raises the upper mold against the elastic projection output of the elastic member 814, and the upper mold concave. It is performed by applying a heating action by heat conduction from the cartridge heater 815 to the upper mold 804 by joining to the inner surface of the place 812.
In addition, after this upper mold heating, or simultaneously with this, the water supply / drainage pump (not shown) is operated to drain the cooling water W in the upper mold cooling water channel 816 to the outside through the introduction / discharge pipe 817. The mold can be heated more quickly.

When the liquid resin material (201/202) is supplied into the lower mold cavity 801, the release film 810 is supplied to the surface of the lower mold 808 as shown in FIG. It is in a state heated to the molding temperature.
As shown in FIG. 9 (1), the lower mold 808 is heated by operating a vacuum motor (not shown) from the intake passage 834 to the mounting hole 826 and between the lower mold 808 and the upper surface of the lower mold plate 807. By reducing the pressure in the gap S and lowering the lower mold against the elastic projection output of the elastic member 828 and joining the lower mold to the upper surface of the lower mold plate 807, the lower mold 808 is heated by the heat conduction from the cartridge heater 829. This is done by applying a heating action.
In addition, after this lower mold heating, or simultaneously with this, the water supply / drainage pump (not shown) is operated to drain the cooling water W in the lower mold cooling water channel 830 to the outside through the introduction / discharge pipe 831. The mold can be heated more quickly.
Further, the pressure reducing action in the mounting hole portion 826 and the gap S during the heating of the lower die is caused by the fitting portion between the lower die 808 and the mounting hole portion 826 as shown in FIGS. 8 (2) and 9 (2). This also acts as a suction force for forcibly sucking the release film 810 from the gap S formed in the above and fitting it onto the surface of the lower mold cavity 801.

Next, by further raising the movable plate 805, second mold clamping is performed to join the upper surface of the floating plate 824 and the bottom surface of the square substrate 811.
At the time of the second mold clamping, the pressure reducing action within the above-mentioned sealing range is performed, and the electronic component 832 on the bottom surface of the square substrate is immersed in the liquid resin material (201/202) in the lower mold cavity 801.

Next, a third mold clamping is performed in which the lower mold plate 807 is further raised against the elastic projection output of the elastic member 825.
At the time of the third mold clamping, the lower mold plate 807 and the lower mold 808 are lifted to compress the liquid resin material (201/202) in the lower mold cavity 801.
Accordingly, at this time, the electronic component 832 on the bottom surface of the square substrate is immersed in the liquid resin material (201/202) in the lower mold cavity 801 and is gradually pressurized and a predetermined compressive force is applied thereto. It is encapsulated with a liquid resin material.

Next, a first mold opening for setting an air insulation gap S between the upper mold 804 and the upper mold heating cartridge heater 815 and between the lower mold 808 and the lower mold heating cartridge heater 829 is performed. At the same time, when the first mold is opened, the upper mold 804 and the lower mold 808 are cooled.
When both the upper and lower molds are cooled, as shown in FIGS. 10 (1) and (2), the operation of the vacuum motor (not shown) is stopped and the reduced pressure state in the mounting hole 826 is released. The lower die 808 is raised from the surface of the lower die plate 807 by the elastic projection output of the elastic member 828 to raise the lower die so as to hold the gap S between the lower die and the lower die plate. Then, the operation of the vacuum motor is stopped and the decompression state in the recess 812 of the upper mold plate 803 is released, so that the upper mold 804 is lowered by the elastic projection output of the elastic member 814, and the upper mold and the upper mold plate The upper mold is lowered so as to hold the gap S between the two. By the air insulation action by the gap S, the heating action by heat conduction from the upper and lower plates 804 and 808, that is, from the cartridge heaters 815 and 829, can be efficiently suppressed.
Further, the lower mold 808 is forcibly cooled by operating a water supply / drainage pump (not shown) and supplying and circulating cooling water W through the introduction / discharge pipe 831 into the lower mold cooling water channel 830. The upper mold 804 is forcibly cooled by supplying and circulating the cooling water W into the upper mold cooling water channel 816 through the introduction / discharge pipe 817. As a result, forced and rapid cooling of the upper and lower molds 804 and 808 can be performed.
Both the upper and lower molds are maintained by maintaining the gap S between the upper and lower molds 804 and 808 and the upper and lower plates 803 and 807 by stopping the operation of the vacuum motor and by forced cooling of the upper and lower molds 804 and 808 by operating the water supply / drainage pump Can be quickly and reliably cooled.
Further, when the upper die 804 is lowered by releasing the above-described reduced pressure state, the reduced pressure state in the intake hole 819 on the bottom surface of the upper die is also released and the adsorption action to the square substrate 811 is eliminated, so that the removal of the square substrate is eliminated. Becomes easy.
FIG. 10 (3) shows a state where the upper and lower molds 804 and 808 are further opened following the first mold opening described above. At this time, the floating plate 824 is raised relative to the lower mold plate 807 by the elastic projection output of the elastic member 825.
Therefore, the ascending action of the floating plate 824 works as a molded product releasing action for releasing the compressed resin-sealed molded body 811a on the bottom of the square substrate from the lower mold cavity 801.

Next, the movable plate 805 is lowered to separate the upper and lower molds 804 and 808, and the second mold opening is performed to return the upper and lower molds to the original mold opening position (see FIG. 7). A square substrate 811 (compressed resin-sealed molded product) integrated with the compressed resin-sealed molded body 811a is taken out from the lower mold cavity 801 portion on which the release film 810 is stretched.
When the compressed resin sealing molded body 811a is released from the lower mold cavity 801, the upper and lower molds 804 and 808 are rapidly cooled. It shrinks and it is in the state where it is easy to release from the lower mold cavity. That is, by cooling the compression resin-sealed molded body 811a, the hardness of the compressed resin-sealed molded body is increased, so that the shape accuracy of the compressed resin-sealed molded body is maintained at the time of release, and as a result, It is possible to efficiently prevent problems such as warpage and deformation in the resin-sealed molded body.
Therefore, it is possible to take out this compressed resin-sealed molded product to the outside immediately after the upper and lower molds 804 and 808 are opened, so that the overall resin molding cycle time is shortened and high-efficiency production is achieved. Can be planned.

As described above, in the configuration of this embodiment, a compact liquid resin material metering device A and a small compression resin sealing molding device B are combined to provide a compact electronic component compression resin sealing molding device. Since the configuration form is adopted, it is possible not only to efficiently and reliably form a compression resin-sealed molded product of electronic parts with uniform, high quality and high reliability, but also a compression resin-sealed molding device Since the overall structure and shape can be reduced in size and weight, the apparatus can be suitably implemented as a so-called desktop type electronic component compression resin sealing molding apparatus.
In addition, high-accuracy weighing suitable for the properties of the liquid resin material can be performed, and the quantitative liquid resin material can be efficiently and quickly put into the lower mold cavity of the compression resin sealing molding apparatus while maintaining its fluidity. Can be supplied to.

  The present invention is not limited to the above-described embodiments, and can be carried out by arbitrarily changing or selecting as necessary within a range not departing from the gist of the present invention.

  Since the present invention can be applied to a compression resin sealing molding apparatus for electronic parts having a reduced size and weight, it can be applied as a simple or table-top compression resin sealing molding apparatus.

1 schematically shows the overall shape of an electronic component compression resin sealing molding apparatus equipped with a liquid resin material metering apparatus according to the present invention. FIG. 1 (1) is a front view thereof, and FIG. FIG. The main part of the liquid resin material metering apparatus corresponding to FIG. 1 is shown. FIG. 2 (1) is a partially cut-away enlarged vertical front view taken along line A1-A1 of FIG. 1 (2), FIG. 2 (2). FIG. 2 (3) is a partially cutaway longitudinal front view showing the liquid resin material measuring portion in an enlarged manner. FIG. FIG. 3 (1) shows a liquid resin material storage process, and FIG. 3 (2) shows its quantitative measurement process. FIG. 4 (1) and FIG. 4 (2) both show a discharging process of the quantitative liquid resin material, in a longitudinal front view of the liquid resin material metering device corresponding to FIG. FIG. 5 (1) and FIG. 5 (2) each show a discharging process of the stagnant liquid resin material, in a longitudinal front view of the liquid resin material metering device corresponding to FIG. FIG. 6 (1) is a partially cutaway front view of the gate nozzle, and FIG. 6 (2) is a view of the gate nozzle. FIG. It is an exploded view. The upper and lower molds in an open state are shown in a schematic central longitudinal sectional view showing an upper mold plate and a lower mold plate portion in a compression resin sealing molding apparatus for electronic parts. FIG. 8 (1) is an explanatory diagram showing a state of supplying the liquid resin material to the lower mold cavity, and FIG. 8 (2) is a main part thereof. It is explanatory drawing which expands and shows. FIG. 9 (1) is an explanatory diagram of the clamping action of both the upper and lower molds, and FIG. 9 (2) is an enlarged view of the main part thereof. . FIG. 10 (1) is an explanatory view of the mold opening action of both upper and lower molds, FIG. 10 (2) is an enlarged view of the main part, FIG. 10 (3) is an explanatory view of the releasing action of the square substrate. It is a partial notch longitudinal cross-sectional view which shows the principal part of the conventional liquid resin material measurement supply apparatus.

Explanation of symbols

A Liquid resin material metering device B Electronic component compression resin sealing molding device S Gap W Cooling water
100 Reservoir
101 Plastic cylinder
101a Tip connection part
102 Cylinder guide
103 Fixing member
104 Containment tank
200 Liquid resin material
201 Quantitative liquid resin material
202 Stagnant liquid resin material
300 Weighing unit
301 Plastic cylinder
301a Connection site
302 Fixing member
303 Seal member
304 Plunger
305 Reciprocating drive mechanism
400 Discharge unit
401 containers
402 Inlet
403 Discharge port
404 Gate nozzle body
405 Cooling water inlet / outlet
406 Cooling water pipe
407 Cooling channel member
408 Nozzle tip
409 Holding member
410 Seal member
411 Nozzle
412 Mating / detaching part
500 Compressed air supply section
501 Air supply route
502 Compressed air
600 Passage switching part
601 communication path
602 Branch valve member
603 Rotation control mechanism
700 Insert plate
701 Cylindrical mounting member
702 Upper communication port
703 Lower communication port
704 Right side communication port
705 left side communication port
706 Connection hole
707 Mounting hole
708 connection hole
709 connection hole
800 base
801 Lower mold cavity
802 tie bar
803 Upper plate
804 Upper mold for compression resin sealing molding
805 Movable plate
806 Lower insulation board
807 Lower mold plate
808 Lower mold for compression resin sealing molding
Model 809 opening / closing mechanism
810 Mold release film
811 square substrate
811a Compression molded resin molding
812 recess
813 Fastening pin
814 Elastic member
815 Cartridge heater
816 Upper cooling water channel
817 Discharge pipe
818 pilot pin
819 Air intake vent
820 Seal material
821 Air intake passage
822 Intake passage
823 Upper guide pin
824 floating plate
825 Elastic member
826 Mounting hole
827 Fastening pin
828 Elastic member
829 Cartridge heater
830 Lower cooling water channel
831 Inlet / exhaust pipe
832 Electronic components
833 Seal material
834 Air intake passage

Claims (10)

A liquid resin material in which an electronic component mounted on the substrate is supplied into the lower mold cavity by disposing a single substrate set lower mold cavity in a resin sealing molding die of an electronic component consisting of at least both upper and lower molds The liquid resin material is metered and supplied for use in a method for compressing and molding the electronic component on the substrate by immersing the liquid resin material in a predetermined heating action and pressurizing action. ,
A liquid resin material storage process for storing the liquid resin material in the storage part,
Next, the liquid resin material stored in the storage unit is transferred to the measuring unit through the passage switching unit, and the liquid resin material is quantitatively measured to measure the quantitative amount.
Next, a quantitative liquid resin material discharging step of transferring the quantitative liquid resin material that has undergone the quantitative measurement process to the discharge portion through the passage switching unit,
Next, a discharge process of the stagnant liquid resin material is performed in which compressed air is supplied to the passage switching section and the discharge section to discharge the stagnant liquid resin material in the passage switching section and the discharge section to the outside. To supply liquid resin material.   Between the liquid resin material storage step and the liquid resin material quantitative measurement step, the liquid resin material transferred to the metering unit side in a pressurized state is added to the liquid resin material stored in the storage unit. The method for metering and supplying a liquid resin material according to claim 1, wherein a pressure transfer step is performed.   In all or a part of the liquid resin material storage step, the liquid resin material quantitative measurement step, the quantitative liquid resin material discharge step and the stagnant liquid resin material discharge step, the liquid resin material may be used. The method for measuring and supplying a liquid resin material according to claim 1, wherein a temperature control step of the liquid resin material for cooling or heating the liquid resin material is performed.   3. The liquid resin material metering method according to claim 1, wherein the liquid resin material is a liquid thermosetting resin material used for sealing molding of electronic parts. A liquid resin material in which an electronic component mounted on the substrate is supplied into the lower mold cavity by disposing a single substrate set lower mold cavity in a resin sealing molding die of an electronic component consisting of at least both upper and lower molds Metering and supply of the liquid resin material used in a resin sealing molding apparatus that compresses and molds electronic components on the substrate by applying predetermined heating action and pressure action to the liquid resin material while being immersed in the liquid resin material A device,
A liquid resin material reservoir for storing the liquid resin material;
A liquid resin material metering unit for measuring the liquid resin material in the reservoir and measuring the quantity;
A discharge part of a quantitative liquid resin material for transferring the liquid resin material measured by the measurement part into the lower mold cavity;
A compressed air supply unit to the discharge unit;
The liquid resin material reservoir and the liquid resin material metering unit, or the liquid resin material metering unit and the metered liquid resin material ejection unit, or the metered liquid resin material ejection unit and the compressed air supply unit. A liquid resin material metering device, comprising: a passage switching portion having a communication passage for connecting the two.   The liquid resin material storage section is provided with a pressure transfer means for liquid resin material that pressurizes and transfers the liquid resin material stored in the storage section to the metering section. The metering device for a liquid resin material according to claim 5.   A cylinder in which the metering portion of the liquid resin material is connected to the communication passage of the passage switching portion, a plunger closely fitted in the cylinder, and a reciprocating drive mechanism for reciprocatingly driving the plunger. 6. The liquid resin material metering and feeding device according to claim 5, wherein the liquid resin material is metered.   8. The fixed quantity of the liquid resin material measured by the liquid resin material measuring unit is set based on a reciprocating stroke length of a plunger closely fitted in the cylinder. A metering device for liquid resin material according to 1.   The liquid resin material is cooled or heated in all or a part of the liquid resin material storage part, liquid resin material metering part, quantitative liquid resin material discharge part, and compressed air supply part. 6. The liquid resin material metering device according to claim 5, wherein temperature measuring means for the liquid resin material is disposed.   6. The liquid resin material storage unit, the liquid resin material measuring unit, and the quantitative liquid resin material discharge unit are configured to be detachable with respect to the apparatus main body. Metering device for liquid resin material.

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