JP5731009B2 - Resin sealing device and resin supply device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a resin sealing device (resin molding device) and a resin supply device , and in particular, a resin using a granular resin (referred to as a granular resin in the present application) having a size of a granular resin or a powdery resin. The present invention relates to a technique effective when applied to a resin sealing device for sealing.

  Japanese Unexamined Patent Application Publication No. 2009-234000 (Patent Document 1) discloses a technique capable of supplying a granular resin to a resin supply destination. This technique supplies granular resin using a shooter extending in the vertical direction and a diffuser for diffusing the resin located in the shooter (diffusion method).

JP 2009-234000 A

  One of the resin sealing devices provided with a resin supply unit drops and supplies the granular resin onto one surface of the work (supplied part) in the resin supply part. After the work is conveyed to the press part, There is one in which a granule resin is cured by heating to form a resin sealing portion on a workpiece.

  As one of the resin supply methods of this resin supply unit, there is a method of supplying granular resin held by a cylindrical holder whose bottom is closed by a shutter and dropping and supplying the granular resin to a workpiece by opening the shutter ( Open system). Further, as another resin supply method, a granular resin is dropped and supplied to a workpiece via a resin dropping portion, and the workpiece loading table or the table on which the workpiece is placed is moved in the X and Y directions. There is a method of dropping and supplying the granule resin so that one stroke is written on one side (writing method). There is also a method of manually supplying the granular resin to the workpiece.

  Even if the granule resin is dropped and supplied to one side of the work using an open method, lighting method, diffusion method, etc., it is actually dropped, so irregularities are actually formed on the deposition surface. Is done. Specifically, for example, even if the granular resin is supplied with a uniform thickness to a work in which electronic components are mounted in a matrix, irregularities corresponding to the arrangement of the electronic components are generated on the surface of the supplied resin. When a workpiece supplied with resin is compression-molded in this way, an air pocket is generated between the mold and the workpiece, and the air cannot be sufficiently discharged, so that the molded product (resin sealing portion) is not filled (void). ) And other molding defects may occur.

  The objective of this invention is providing the technique which can reduce the shaping | molding defect of a molded article. The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

  Of the inventions disclosed in the present application, the outline of typical ones will be briefly described as follows.

Resin sealing apparatus according to an embodiment of the present invention, the resins supply unit supplies the dropped granules resin to be supply unit, said a conveying hand for conveying a supply portion, a pair of cavities is formed A press part provided with a mold , and the resin supply part includes a trough for dropping the granular resin onto the supply part, and a cover on which the supply part is placed and disposed immediately below the trough. a placing section supply unit, and a drive mechanism for moving the trough, and a first storage unit for storing the granular resin, small and than the first savings distillation unit, at a predetermined position close to the first reservoir The granular resin is supplied when moved, so that the granular resin from the first storage part is temporarily stored, and the second storage part that supplies the granular resin to the trough , and the supply target provided part mounting portion, the granules tree in a state that the object supply section is placed And a weight meter for measuring the drop amount of the resin supply section, the first reservoir is fixed, the trough is moved Ri by said drive mechanism together with the second reservoir, wherein the supply unit The mounting portion is configured to be fixed, and the granular resin is supplied to the supplied portion so as to form the desired pattern by moving the trough, and the transport hand is supplied with the granular resin. and conveying the supply unit into the pair of molds is placed, the pre-scan portion clamps the granules resin is fed the supply target portion in the pair of molds, in the key Yabiti The granular resin is heat-cured and sealed with resin.

According to this, the movable part including the trough and the second storage part can be reduced in weight and size. The trough moves smoothly. In addition, the amount of drop measured with a weigh scale and the planned drop The error can be corrected. These lead to reducing molding defects such as unfilling. .

Further, in the resin sealing device, the supply unit placement unit is moved by the drive mechanism to the truck. The granular resin is continuously applied to the supplied part from the trough while being moved relative to the trough. A base resin part is formed by lighting to be dropped, and the base resin part is formed at the center of the base resin part. Resin is supplied so as to form a medium-high resin part having a height higher than that of the fat part.

According to this, even when the surface of the base resin portion has irregularities, the irregularities are filled. In addition, the resin melted from the middle-high resin portion can be allowed to flow on the surface of the base resin portion. Therefore, Molding defects such as unfilling can be reduced.

In the resin sealing device, when the trough is advanced and retracted in the length direction of the trough, By repeating the operation of dropping the granular resin and supplying the resin to the supply part in a strip shape, Resin is supplied to the entire surface of the supplied portion.

Here, the supply amount in the previous dropping operation is measured with the weighing scale, and the error of the planned supply amount is corrected. Thus, the resin supply operation is repeated while adjusting the supply amount in the next dropping operation.

According to this, since the granule resin is dropped in a single band-like region by a single dropping operation, By repeating this, the granular resin is uniformly supplied to the region where the band-like regions are arranged. Also, throw The error of the total amount of the lower amount can be reduced as much as possible.

Moreover, preheating the resin sealing apparatus is provided from the resin supply section to the transport path of the workpiece to the press section, preheating the work to the granules resin is supplied at a temperature lower than the molding temperature Department.

  According to this, the air between granule resin can be reduced with the molten resin. That is, it is possible to prevent air from being caught inside the resin sealing portion during molding. This leads to reduction of molding defects such as unfilling.

  In addition, a cooling unit is provided in the transfer path of the workpiece from the preheating unit to the press unit, and cools the preheated workpiece.

  According to this, even when the granular resin is heated by the preheating part, the shortening of the gel time until the molding can be suppressed. That is, the fluidity of the resin can be ensured during molding. For this reason, even if the surface of the base resin portion has irregularities, the resin melted from the medium-high resin portion flows on the surface of the base resin portion so as to fill the irregularities. This can reduce molding defects such as unfilling.

  Of the inventions disclosed in the present application, effects obtained by typical ones will be briefly described as follows. According to the resin sealing device according to the embodiment of the present invention, it is possible to reduce molding defects of a molded product.

It is a layout figure of each part which constitutes a resin sealing device concerning Embodiment 1 of the present invention. It is sectional drawing in operation | movement of the resin supply part of the resin sealing apparatus shown in FIG. It is a top view of the workpiece | work for demonstrating operation | movement of the resin supply part shown in FIG. It is sectional drawing of the workpiece | work after resin supply by the resin supply part shown in FIG. FIG. 3 is a cross-sectional view of the resin supply unit during operation following FIG. 2. It is a top view of the workpiece | work for demonstrating operation | movement of the resin supply part shown in FIG. It is sectional drawing of the workpiece | work after resin supply by the resin supply part shown in FIG. It is sectional drawing in operation | movement of the preheating part of the resin sealing apparatus shown in FIG. It is sectional drawing in operation | movement of the cooling part of the resin sealing apparatus shown in FIG. It is sectional drawing in operation | movement of the press part of the resin sealing apparatus shown in FIG. It is sectional drawing in operation | movement of the press part following FIG. It is sectional drawing in operation | movement of the press part following FIG. It is sectional drawing in operation | movement of the press part following FIG. FIG. 14 is a cross-sectional view of the pressing unit during operation following FIG. 13. It is sectional drawing in operation | movement of the resin supply part of the resin sealing apparatus which concerns on Embodiment 2 of this invention. FIG. 16 is a cross-sectional view of the resin supply unit during operation following FIG. 15. FIG. 17 is a cross-sectional view of the resin supply unit during operation following FIG. 16. FIG. 18 is a cross-sectional view of the resin supply unit during operation following FIG. 17. It is a side view of one braid | blade in the resin supply part of the resin sealing apparatus which concerns on Embodiment 3 of this invention. It is a side view of the other braid | blade in the resin supply part of the resin sealing apparatus which concerns on Embodiment 3 of this invention. It is sectional drawing in operation | movement of the pre-heating part of the resin sealing apparatus which concerns on Embodiment 4 of this invention. It is sectional drawing in operation | movement of the cooling part of the resin sealing apparatus which concerns on Embodiment 4 of this invention. FIG. 23A to FIG. 23F are diagrams for describing a modified example of the operation of the resin supply unit. 24A to 24G are diagrams for explaining a modification of the workpiece. It is a figure for demonstrating the modification of the operation control system of a resin supply part. It is a figure for demonstrating the modification of a resin supply part.

  In the following embodiments, a plurality of sections and the like will be described when necessary. However, in principle, they are not irrelevant to each other, and one is related to some or all of the other, details, and the like. For this reason, the same code | symbol is attached | subjected to the member which has the same function in all the figures, and the repeated description is abbreviate | omitted. Moreover, the component shown by embodiment is not necessarily essential in this invention. In addition, the number of components (including the number, numerical value, quantity, range, etc.) is limited to that specific number unless otherwise specified or in principle limited to a specific number in principle. It may be more than a specific number or less. In addition, when referring to the shape of a component, etc., it shall include substantially the same or similar to the shape, etc., unless explicitly stated or in principle otherwise considered otherwise .

(Embodiment 1)
First, an outline of the resin sealing device 1 will be described with reference to FIG. The resin sealing device 1 includes a workpiece / resin supply unit A, a workpiece storage unit B, a molding processing unit C, and a preliminary processing unit D. In the resin sealing device 1, a plurality of (two in FIG. 1) molding processing units C and one preliminary processing unit D are provided side by side between the workpiece / resin supply unit A and the workpiece storage unit B. . In the resin sealing device 1, the workpiece W is transferred to the workpiece / resin supply unit A, the pretreatment unit D, and the molding through the conveyance hands 4 and 5 (loader and unloader) moving on the conveyance rail 2 straddling each part. The processing unit C and the workpiece storage unit B are conveyed in this order. In the present embodiment, the preliminary processing unit D is provided, but if not provided, the molding processing unit C may be provided at the position of the preliminary processing unit D. Further, the number of forming processing units C can be appropriately increased or decreased according to the processing capacity of each unit.

  The workpiece W is an electronic component (for example, a semiconductor chip) mounted on a rectangular substrate (for example, a wiring substrate). The workpiece W is sealed with a resin sealing portion after the molding process. The resin used as the resin sealing portion is a thermosetting resin (epoxy resin, silicone resin, etc.), and a resin composition (filler such as silica or alumina, release agent, colorant, etc.) is a predetermined one. The content is adjusted. The shape of the resin is a small resin that is about the size of a granular resin or a powdery resin (referred to herein as a granular resin).

  The work / resin supply unit A includes a supply magazine 6, an alignment unit 7, a supply table 8, a thickness measurement unit 11, and a resin supply unit 12. In the workpiece / resin supply unit A, the workpiece W is conveyed in the order of the supply magazine 6, the alignment unit 7, the supply table 8, the thickness measuring unit 11, and the resin supply unit 12.

  Specifically, the workpieces W stored in the supply magazine 6 are aligned in a predetermined direction by the alignment unit 7 by a transfer mechanism (not shown) and transferred from the alignment unit 7 to the supply table 8. The workpiece W sent to the supply table 8 is conveyed to the thickness measuring unit 11 by the conveyance hand 4 (loader) that moves on the conveyance rail 2.

  The thickness measuring unit 11 measures the thickness of the workpiece W before molding in order to adjust the supply amount (drop amount) of the granular resin to the workpiece W. The thickness measurement unit 11 includes a table 13 on which the workpiece W from the supply table 8 is placed, a conveyance rail 14 laid from the conveyance rail 2 side to the resin supply unit 12 side, and a measurement unit 15. .

  The measurement unit 15 includes an optical distance measuring device such as a laser displacement meter, and can measure the state (for example, chipping) and height of the electronic component, the thickness of the substrate, and the like. The workpiece W moves on the conveyance rail 14 while being placed on the table 13, the thickness is measured by the measurement unit 15, and the workpiece W is conveyed to the front of the resin supply unit 12. For example, the measuring unit 15 can be adjusted so as to increase or decrease the amount of resin supplied by the resin supply unit 12 according to the number and thickness of electronic components mounted.

  The resin supply unit 12 (dispenser) supplies (drops) the granular resin onto the workpiece W. In the resin supply unit 12, an amount of granular resin determined by referring to data obtained by the thickness measurement unit 11 or the like is supplied so as to be deposited on the workpiece W. The resin supply unit 12 will be described in detail later.

  In this way, the workpiece W on which the granular resin is deposited in the workpiece / resin supply section A is transported to the preliminary processing section D by a transport mechanism (not shown). The preliminary processing unit D includes a preheating unit 16, a cooling unit 17, and a table 18. In the preliminary processing unit D, the workpiece W is conveyed in the order of the preheating unit 16, the cooling unit 17, and the table 18 in a state where the granular resin is supplied by the resin supply unit 12.

  The preheating unit 16 preheats the workpiece W at a temperature lower than the molding temperature by the heater of the molding processing unit C. The preheating unit 16 is provided in the conveyance path of the workpiece W from the resin supply unit 12 to the molding processing unit C. The preheating unit 16 will be described in detail later. The preheated work W is transported to the cooling unit 17 by a transport mechanism (not shown).

  The cooling unit 17 cools the workpiece W heated by the preheating unit 16. The cooling unit 17 is provided in the transport path of the workpiece W from the preheating unit 16 to the forming processing unit C. The cooling unit 17 will be described in detail later. The cooled workpiece W is transferred to the table 18 by a transfer mechanism (not shown).

  In this way, the workpiece W that has been subjected to the preliminary processing in the preliminary processing unit D is transported to one of the molding processing units C by the transport hand 4. The molding processing unit C includes a press unit 21 (mold mechanism). Here, in the forming processing section C, the transport hands 4 and 5 extend and contract from the transport rail 2 side to the inside of the press section 21. The transport hand 4 (loader) is used to carry the workpiece W into the press unit 21, and the transport hand 5 (unloader) is used to carry the workpiece W out of the press unit 21.

  The press unit 21 clamps the workpiece W supplied with the granular resin with a pair of molds, heats and cures the granular resin in the cavity, and seals the resin. The press unit 21 will be described in detail later.

  In this way, the workpiece W sealed with resin in the molding processing unit C is conveyed to the workpiece storage unit B by the conveyance hand 5. The work storage unit B includes a thickness measurement unit 22 and a storage magazine 23. In the workpiece storage unit B, the workpiece W (molded product) is conveyed in the order of the thickness measurement unit 22 and the storage magazine 23.

  The thickness measuring unit 22 has the same configuration as the thickness measuring unit 11 such as the table 24, the conveyance rail 25, and the measuring unit 26 in order to adjust the supply amount (drop amount) of the granular resin to the workpiece W, and is molded. The thickness of the subsequent workpiece W is measured.

  In the resin supply unit 12, an amount of granular resin determined with reference to the data obtained by the thickness measurement unit 22 is supplied so as to be deposited on the workpiece W. For example, feedback control is performed so as to increase or decrease the dropped amount of the granular resin in the resin supply unit A in accordance with the deviation from the planned value of the thickness data at the resin-sealed portion measured by the measurement unit 26.

  The workpiece W (molded product) moves on the transport rail 25 while being placed on the table 24, the thickness is measured by the measuring unit 26, the transported to the storage magazine 23, and stored. With such a resin sealing device 1, a resin sealing portion (molded product) is formed on the workpiece W.

  Next, the resin supply unit 12 (dispenser) will be described in detail with reference to FIGS. In the resin supply unit 12, resin supply is performed as a first supply process in which the granular resin 27 is deposited and supplied to the work W in a planar shape, and a second supply process in which the granular resin 27 is deposited in a dot shape and supplied to the work W. A process is performed. Through the first and second supply steps, the resin supply unit 12 supplies the granular resin 27 corresponding to the resin sealing amount to the workpiece W once. In the work W, a plurality of electronic components 29 are mounted in a matrix on a square (rectangular) substrate 28 in plan view. In addition, the structure which seals the carrier (work W) by which the some electronic component 29 was fixed to the matrix form may be sufficient.

  Moreover, the resin supply part 12 has the resin dropping part 32 (for example, trough) which drops the granular resin 27 on the workpiece | work W from a front-end | tip. When the resin dropping portion 32 is a trough, for example, the trough receives the granule resin 27 supplied from the hopper, vibrates the trough with an electromagnetic feeder, and sends the granule resin 27 to the front end side of the trough. Drop from the tip of the trough.

  The resin supply unit 12 supports an XY drive stage 31 (work placement unit) that can place the work W in a fixed state and move in the XY direction, and can move the stage 31 in the XY direction (scannable). And an XY drive mechanism 33 (scanning mechanism). In the XY drive mechanism 33, a slider 35 slides in the X direction on the X-axis rail 34 and a slider 36 slides in the Y direction on the slider 35, which is also the Y-axis rail, by a drive source (not shown). In the resin supply unit 12, the stage 31 is provided so as to be movable in the XY directions, whereas the resin throwing portion 32 is provided in a fixed manner.

  Further, the resin supply unit 12 has a scattering prevention frame 37 in which an opening 37a is formed in order to prevent scattering when the granular resin 27 is dropped from the tip of the resin throwing portion 32 onto the workpiece W. The scattering prevention frame 37 is disposed to face the stage 31 and moves in the XY direction in conjunction with the stage 31. The granular resin 27 is dropped in the frame of the scattering prevention frame 37, that is, in the opening 37a (see FIGS. 2 and 5). Even if the granule resin 27 is dropped from the resin dropping portion 32 onto the workpiece W, it is possible to prevent the granule resin 27 from being scattered by the inner wall of the opening 37a of the scattering prevention frame 37.

  In the resin supply unit 12 configured as described above, in the first supply process, most (for example, 90% or more) of the total supply amount of the granular resin 27 to the workpiece W is supplied as the first resin dropping. In the first supply step, the granular resin 27 is dropped and supplied to the workpiece W from the tip of the resin dropping portion 32 (see FIG. 2), and the stage 31 is moved in the XY direction within the horizontal plane of the workpiece W (see FIG. 2). 3), a base resin portion 27a is formed on the workpiece W by writing (see FIG. 4). That is, most of the granular resin 27 to be supplied is spread over a predetermined area of the work W.

  An example of the dropping of the granular resin 27 by the dropping portion 32 will be described. As shown by the arrow in FIG. 3, the resin throwing portion 32 extends from one corner A to the adjacent corner B along the edge (X direction) of the opening 37 a having a rectangular shape in plan view. Moving. Next, the resin throwing portion 32 moves from the corner B to the adjacent corner C along the edge (Y direction) of the opening 37a by a predetermined distance, and then moves along the X direction to the side AD. Next, the resin throwing portion 32 moves to the corner D along the edge (Y direction) of the opening 37a by a predetermined distance, and then moves along the X direction to the side BC. By repeating such an operation, the granular resin 27 is supplied to the entire surface. That is, by the writing method, the resin dropping portion 32 drops and supplies the granular resin 27 onto the workpiece W so as to draw one stroke from the corner A to the opposite corner C.

  The resin dropping portion 32 drops a predetermined amount of the granular resin 27 per unit time onto the workpiece W, and moves the stage 31 on which the workpiece W is placed in the XY direction by a predetermined amount per unit time. The granule resin 27 is deposited on the entire surface with a uniform thickness. The thickness at which the granular resin 27 is supplied may be adjusted by adjusting the moving speed of the stage 31.

  In the present embodiment, since the anti-scattering frame 37 is disposed as shown in FIG. 2, the electronic component 29 disposed on the outermost periphery among the plurality of electronic components 29 mounted in a matrix on the substrate 28 is A part is covered with the granule resin 27, and the entire electronic component 29 is covered with the granule resin 27 (base resin portion 27 a). That is, of the mounting area where the plurality of electronic components 29 are mounted, the outer peripheral area is not covered with the granular resin 27. By not supplying the granule resin 27 outside the electronic component 29 on the outer peripheral side, the spread of the granule resin 27 is suppressed by the electronic component 29 on the outer row side to prevent the granule resin 27 from being dropped during transportation and to prevent gold during molding. This is because it is possible to prevent biting of the granule resin 27 in the mold. The opening 37a of the anti-scattering frame 37 is formed in an optimal plan view shape so that the granular resin 27 is not scattered to the outer peripheral region and the outer peripheral region is not covered with the granular resin 27. .

  In the resin supply unit 12, the second supply step supplies the remaining amount (for example, 10% or less) obtained by subtracting the first resin drop amount out of the total supply amount of the granular resin 27 to the workpiece W as the second resin drop. To do. In this second supply step, the granule resin 27 is dropped onto the workpiece W from the tip of the resin throwing portion 32 without moving the stage 31 (see FIGS. 5 and 6), and the base resin portion. A medium-high resin portion 27b is formed on 27a (see FIG. 7).

  In this way, the granular resin 27 is continuously dropped onto the workpiece W from the resin throwing portion 32 while the stage 31 (work placement portion) is scanned relative to the resin throwing portion 32 by the XY drive mechanism 33 (scanning mechanism). Resin is supplied so as to form the base resin portion 27a by lighting. Further, the resin is supplied so as to form the middle-high resin part 27b having a height higher than that of the base resin part 27a at the center of the base resin part 27a.

  According to this, the granular resin 27 can be accurately and easily supplied to a predetermined position with a predetermined supply amount into the horizontal plane of the workpiece W. That is, it is difficult to accurately control the supply amount over the entire surface only by the operation of uniformly supplying the thickness as the base resin portion 27a. However, after supplying the base resin portion 27a with a predetermined accuracy as the supply amount, The supply amount can be easily adjusted, and the overall supply amount can be accurately controlled.

  Next, the preheating unit 16 will be described in detail with reference to FIG. The preheating unit 16 includes a table 38 on which the workpiece W is placed, a heater 39, and a housing that surrounds the table 38 and the heater 39 in order to increase thermal efficiency and prevent external heating. The heater 39 is composed of, for example, an infrared heater. In order to further increase the thermal efficiency, a heater may be incorporated in the table 38 and the table 38 may be heated from the side. In this case, a suction mechanism may be built in the table 38 to facilitate the transfer of heat from the table 38.

  In the preheating part 16, the work W on which the base resin part 27 a and the medium-high resin part 27 b are formed is placed on the table 38, and the work W is preheated at a temperature lower than the molding temperature by the heat from the heater 39. Thereby, since the granule resin 27 is melted and the particles adhere to each other on the surface, it is possible to prevent the powder from being scattered from the granule resin 27 at the time of transportation. In addition, since the granule resin 27 melts and the space between the resins becomes dense, the thicknesses of the base resin portion 27a and the middle-high resin portion 27b are reduced and heating is facilitated.

Next, the cooling unit 17 will be described in detail with reference to FIG. The cooling unit 17 includes a table 41 on which the workpiece W is placed, an air blow 42, and a casing that surrounds the table 41 and the air blow 42 in order to increase cooling efficiency. In order to further improve the cooling efficiency, a cooler may be built in the table 41 and cooling may be performed from the table 41 side. In this case, it may be easier to transfer heat from the table 41 incorporates a suction mechanism in the table 41. Moreover, when the workpiece | work W heated by the preheating part 16 is naturally cooled, you may convey the workpiece | work W from the preheating part 16 directly to the table 18 (refer FIG. 1).

  According to the cooling unit 17, even when the granular resin 27 is heated by the preheating unit 16, it is possible to suppress the shortening of the gel time until molding while improving the moldability and handling properties in the press unit. . That is, the fluidity of the resin can be ensured during molding.

  Moreover, even when the granule resin 27 is heated by the preheating part 16, the influence by the time difference which conveys the workpiece | work W from the pretreatment part D to any press part 21 (molding process C) can be suppressed. . That is, the cured state of the resin supplied to the workpiece W in each press portion 21 can be made uniform.

  Next, the press part 21 is demonstrated in detail with reference to FIGS. The press unit 21 clamps the workpiece W supplied with the granular resin 27, and heats and cures the granular resin 27 in the cavity recess 45 (also simply referred to as a cavity) to thereby form a resin sealing portion 27c (see FIG. 14). It has a pair of molds (mold mechanism) to be formed. The pair of molds includes a heater (not shown), and includes one upper mold 43 and the other lower mold 44 that are arranged to face each other and can be moved toward and away by a known lifting mechanism (for example, a toggle mechanism). Have. Here, the upper mold 43 is a fixed mold and the lower mold 44 is a movable mold.

  The upper mold 43 has a cavity piece 46 fixedly assembled to an upper mold base (not shown), and an upper mold clamper 47 that surrounds the cavity piece 46 and is assembled to the upper mold base via a spring, for example. doing. The cavity piece 46 is formed of a mold block having a planar shape (for example, a square shape) that matches the shape of the resin sealing portion 27c formed on the workpiece W. Further, the upper mold clamper 47 is formed of a cylindrical mold block in which a through hole for enclosing the cavity piece 46 is formed. An air vent (not shown) is formed on the clamp surface 43a of the upper clamper 47.

  In the upper mold 43, the bottom surface of the cavity recess 45 is formed by the plane (lower surface) of the cavity piece 46, and the side surface of the cavity recess 45 is formed by the inner wall surface of the through hole of the upper mold clamper 47. That is, the cavity recess 45 (cavity) is formed in the upper mold 43. A release film 48 is stretched on the clamp surface 43 a of the upper mold 43.

  The lower mold 44 has a lower mold clamper 51 fixedly assembled to a lower mold base (not shown). The lower mold clamper 51 is composed of a mold block having a planar shape on which the workpiece W is placed.

  The lower mold clamper 51 is formed with a suction hole 52 for sucking the workpiece W placed thereon. The suction hole 52 is connected to a suction mechanism including a compressor, for example. When the work W is placed on the lower mold 44, the suction mechanism adsorbs the work W, so that the heating efficiency from the lower mold 44 is improved.

  The lower mold clamper 51 is formed with a decompression hole 53 for decompressing the inside of the cavity 45 during clamping. The decompression hole 53 is connected to a decompression mechanism having a vacuum pump, for example. By causing the resin to flow in the decompressed cavity 45, it is possible to prevent air from being caught inside the resin sealing portion during molding. Note that a seal member 54 (for example, an O-ring) is provided on the outer peripheral portion of the lower mold clamper 51 (the portion that comes into contact with the upper mold clamper 47) in order to form a closed space (airtight space).

  Next, the operation of the press unit 21 will be described in detail. As shown in FIG. 10, the workpiece W is supplied to a pair of molds that are opened. The workpiece | work W here is the state of the to-be-molded product before resin sealing part formation. The workpiece W is conveyed from the table 18 of the preliminary processing unit D into the pair of molds by the loader 4, and is sucked and placed by the suction holes 52 by the lower mold 44.

  In the workpiece W (substrate 28), the surface on which the electronic component 29 is mounted, that is, the surface to which the granule resin 27 is supplied is the upper mold 43 side, and the opposite surface is in contact with the clamp surface 44a of the lower mold 44. Placed on. In this way, the workpiece W is placed on the lower die 44 by aligning the cavity recess 45 formed in the upper die 43 and the supplied granular resin 27.

  Further, as shown in FIG. 10, the release film 48 is sucked and held on the clamp surface 43 a of the upper mold 43. Here, the cavity piece 46 constituting the bottom of the cavity recess 45 is in a retracted position relatively retracted from the position (molding position) of the cavity bottom when the resin is cured. As shown in FIG. 10, the release film 48 is adsorbed to the upper mold 43 along the shape of the cavity recess 45.

  Subsequently, after the transfer hand 4 is retreated from the pair of molds, as shown in FIGS. 11 and 12, the upper mold 43 and the lower mold 44 are brought close to each other. The pair of molds is heated to a temperature (molding temperature) at which the granular resin 27 is melted by a heater (not shown). Accordingly, the upper mold 43 is brought into contact with the medium / high resin portion 27b formed on the workpiece W to melt the granule resin 27 of the medium / high resin portion 27b. When the seal member 54 provided on the clamp surface 44a of the lower mold 44 starts to contact the clamp surface 43a of the upper mold 43 via the release film 48, the mold space including the cavity recess 45 is externally opened. A closed space is formed while blocking and degassing.

  Subsequently, as shown in FIGS. 13 and 14, the resin melted from the middle-high resin portion 27 b is spread over the base resin portion 27 a to fill the cavity 45 with the resin. Specifically, the upper die 43 and the lower die 44 are brought closer to each other, and the upper die clamper 47 is pushed back against the spring, whereby the lower surface of the cavity piece 46 is moved from the retracted position to the molding position, and the cavity 45 Becomes shallower. At that time, the lower surface of the cavity piece 46 presses and spreads the molten resin. According to this, for example, even when the surface of the base resin portion 27a differs depending on the thickness of the electronic component 29 and the surface has irregularities, the resin melted from the medium-high resin portion 27b to fill the irregularities It can flow on the surface of the base resin part 27a. That is, according to the resin sealing device 1, it is possible to reduce molding defects of the molded product (resin sealing portion 27c) due to unfilling with air pockets.

  Thus, the upper mold clamper 47 is pushed back, and the mold clamping operation is completed in a state where the workpiece W is sandwiched and held between the clamp surface 43a of the upper mold 43 and the clamp surface 44a of the lower mold 44. At this time, the electronic component 29 of the workpiece W is covered with the resin 27 in the cavity 45. Next, the resin 27 is kept at a predetermined resin pressure in the cavity 45 and cured by heating (curing). Thus, in the press part 21 of the resin sealing apparatus 1, the workpiece | work W can be resin-sealed and the resin sealing part 27c can be formed.

Then separating the upper die 43 and lower die 44 to open the mold a pair of molds, and release the workpiece W that has been resin-sealed from the upper die 43 and lower die 44, the unloader 5 workpiece W ( Molded product) is taken out.

  As described above, in the resin supply unit 12, the base resin part 27 a made of the granular resin 27 is formed on the workpiece W in the first supply process, and the base resin part 27 a is formed on the base resin part 27 a in the second supply process. The middle and high resin portions 27 b are formed by a smaller amount of the granular resin 27 than the granular resin 27. Thus, by covering substantially the entire workpiece W with the base resin portion 27a, the resin flow on the workpiece W is reduced during molding, and the granular resin 27 of the medium-high resin portion 27b flows on the base resin portion 27a. By doing so, the force applied to the electronic component 29 by the resin flow is reduced. In the case where the electronic component 29 is electrically connected to the substrate 28 with a bonding wire, the wire flow can be prevented by forming the base resin portion 27a, and the molding quality of the molded product is improved. be able to.

  Moreover, in the resin supply part 12, the middle-high resin part 27b is formed on the center part of the base resin part 27a by the 2nd supply process. For this reason, in the press part 21, the molten resin 27 from the middle-high resin part 27b can be flowed toward the outer peripheral part from the center part of the base resin part 27a. For example, even when the workpiece W has a rectangular shape in plan view, the molten resin 27 can be spread to the four corners during molding. Accordingly, molding defects such as unfilling at the corners of the molded product can be reduced.

(Embodiment 2)
In the first embodiment, the case where the resin supply unit is provided with the anti-scattering frame and drops the granular resin supplied to the workpiece from the tip of the resin dropping portion and deposits a predetermined amount without scattering is described. In the present embodiment, a case where a predetermined amount of granular resin is deposited on a work without providing a scattering prevention frame will be described. In addition, the description which overlaps with the said Embodiment 1 may be abbreviate | omitted.

A resin supply unit 12A (dispenser) in the present embodiment will be described with reference to FIGS. 1 and 15 to 18. The resin supply unit 12A is provided in the work / resin supply unit A in the same manner as the resin supply unit 12 of the first embodiment.

In the resin supply unit 12A, as in the above-described embodiment, the first supply step of supplying the granular resin 27 in a planar shape on the workpiece W and supplying the granular resin 27 in a dotted shape on the workpiece W is supplied. The resin supply process which has the 2nd supply process to perform is performed. The first and second feed step, the resin supply section 12 A supplies the granular resin 27 corresponding to the resin encapsulation of one to the work W. In the work W, a plurality of electronic components 29 are mounted in a matrix on a strip-like (rectangular) substrate 28 in plan view.

  Further, the resin supply unit 12A has an XYZ drive stage 31A on which the workpiece W is placed and movable in the XYZ directions, an XYZ drive mechanism 33A that supports the stage 31A so as to be movable in the XYZ directions, and the weight of the workpiece W (workpiece). And a weight sensor 57 for measuring (including the weight of the resin supplied to W).

  The stage 31A has a through hole 31a in the thickness direction in the center. For this reason, the stage 31A sucks and holds the workpiece W at the outer peripheral portion. That is, the stage 31 </ b> A penetrates except for a portion that holds the outer periphery of the workpiece W. The weight sensor 57 measures the weight of the workpiece W while passing through the through hole 31a of the stage 31A.

  In the XYZ drive mechanism 33A, the slider 35 slides in the X direction on the X-axis rail 34 and the slider 36 slides in the Y direction on the slider 35 that is also the Y-axis rail by a drive source (not shown). A Z-axis rail 55 is provided on the slider 36, and the slider 56 slides in the Z direction on the Z-axis rail 55. In the resin supply unit 12A, the stage 31A is provided so as to be movable in the XYZ directions, whereas the resin throwing portion 32A is provided fixedly.

  Further, the resin supply unit 12A has a resin dropping portion 32A (for example, a shooter) that drops the granular resin 27 onto the workpiece W from the tip. When the resin dropping portion 32A is a shooter, for example, the trough receives the granule resin 27 supplied from the hopper, vibrates the trough with an electromagnetic feeder, and sends the granule resin 27 to the front end side of the trough. To work W through the shooter. By using a shooter, the tip of the resin throwing portion 32A can be reduced in diameter, and the granular resin 27 can be supplied (written) more accurately into a predetermined position with a predetermined supply amount into the horizontal plane of the workpiece W. For this reason, the supply amount can be adjusted more precisely for each part. Further, since the shooter extending downward is supplied close to the workpiece W, the base resin part 27a and the medium-high resin part 27b made of the granular resin 27 can be easily formed without using the scattering prevention frame 37 used in the first embodiment. Can be formed.

  In the resin supply unit 12A configured as described above, first, the workpiece W is received by the stage 31A, and the stage 31A is lowered and placed on the weight sensor 57 to measure the weight of the workpiece W as shown in FIG. To do. Next, the slider 56 is raised in the Z-axis direction, and the workpiece W is transferred from the weight sensor 57 to the table 31A.

  Next, the granular resin is supplied (dropped) on the workpiece W based on the resin supply information (resin supply amount). In the resin supply unit 12A, as the first supply process, most (eg, 90%) of the total supply amount of the granular resin 27 to the workpiece W is supplied as the first resin dropping. In this first supply step, while dropping and supplying the granular resin 27 to the workpiece W from the tip of the resin dropping portion 32A (see FIG. 16), the stage 31A is moved in the XY direction within the horizontal plane of the workpiece W, A base resin portion 27a is formed on W (see FIG. 17). That is, most of the granular resin 27 to be supplied is spread over a predetermined area of the work W.

  Next, in the resin supply unit 12A, in the second supply step, the remaining amount (for example, 10%) obtained by subtracting the first resin drop amount out of the total supply amount of the granular resin 27 to the workpiece W is set as the second resin drop. Supply. In the second supply step, the granular resin 27 is dropped and supplied to the workpiece W from the tip of the resin dropping portion 32A without moving the stage 31A, thereby forming the middle-high resin portion 27b on the base resin portion 27a ( (See FIG. 18).

  In this way, after supplying a prescribed amount of the granular resin 27 on the workpiece W, the stage 31A is moved to a predetermined position, and the weight sensor 57 is again weighed by the weight sensor 57 to measure the weight of the workpiece W. . The difference between this measured value and the previous measured value is the supply amount of the granular resin 27 actually supplied onto the workpiece W. When there is still a shortage based on this supply amount, the remaining granular resin 27 is precisely supplied. For this reason, in the resin supply part 12A, the granular resin 27 can always be reliably supplied to the workpiece W with a desired supply amount. Therefore, according to the resin sealing device 1 provided with the resin supply unit 12A in the present embodiment, it is possible to reduce molding defects of the molded product due to unfilling or the like.

(Embodiment 3)
In the first embodiment, the upper mold and the lower mold are brought close to the workpiece placed on the lower mold, so that the molten resin by bringing the upper mold into contact with the middle-high resin portion is placed on the base resin portion. The case where the resin is filled in the cavity by spreading is described. As a result, even if the surface of the base resin part has irregularities, the resin melted from the medium-high resin part is filled on the surface of the base resin part so as to fill the irregularities without leveling the surface of the base resin part. It can flow. In the present embodiment, a case will be described in which the surface of the base resin portion is leveled using a blade in order to further reduce the unevenness of the surface of the base resin portion. In addition, the description which overlaps with the said Embodiment 1 may be abbreviate | omitted.

  FIG. 19 shows a blade 58 in the present embodiment. The resin supply unit 12 has such a blade 58 and is used for leveling the granular resin 27 supplied to the workpiece W. The blade 58 is obtained by bending a part of a rod-shaped plate member. Specifically, the blade 58 is formed with a parallel portion 58a parallel to the supply surface of the workpiece W supplied with resin and a bent portion 58b protruding from the center of the parallel portion 58a.

  For example, the granular resin 27 is dropped and supplied from the resin dropping portion 32A to the workpiece W without moving the stage 31A as in the second supply step in the above-described embodiment, so that the whole amount of the granular resin 27 is piled up. After the supply, the resin supply unit 12 can level the granular resin 27 supplied onto the workpiece W with the blade 58 rotated by the rotation shaft 59. That is, the base resin part 27a is leveled and adjusted by the parallel part 58a, and the middle and high resin parts 27b are maintained and adjusted by the bent part 58b.

  According to this, the surface of the portion corresponding to the base resin portion 27a can be leveled, and the shape of the middle-high resin portion 27b can be formed. Therefore, unevenness does not occur on the surface corresponding to the base resin portion 27a, and the molten resin from the medium-high resin portion 27b can be flowed to the uniform surface. Accordingly, the number of air pockets can be extremely reduced, and molding defects such as unfilling can be reduced.

  Not only the blade 58 but also a blade 58A as shown in FIG. The blade 58A is obtained by bending a part of a rod-shaped plate member. Specifically, the blade 58A is inclined (angle θ) by several degrees with respect to the supply surface of the workpiece W supplied with resin so as to protrude toward the rotating shaft 59 side.

For example, after the process described with reference to FIG. 5, in the resin supply unit 12, the granular resin 27 supplied onto the workpiece W is leveled by the blade 58 </ b> A rotated by the rotation shaft 59. That is, trim smoothed granules resin 27 so that the circular cone shape on the workpiece W. Therefore, at the time of molding, it is possible to flow the molten from the top of the circle cone to leveling the surface resin. For this reason, molding defects such as unfilled air pockets can be reduced while flowing voids from the center toward the outside.

(Embodiment 4)
In the first embodiment, the case has been described in which the processing in the preheating unit and the cooling unit is performed while the resin is deposited on the workpiece. In the present embodiment, a case will be described in which the resin deposited on the workpiece is processed by the preheating unit and the cooling unit.

  As shown in FIG. 21, the preheating unit 16A includes a preheating heater (not shown), and is disposed opposite to each other and can be moved toward and away from the preheating upper die 61 and the preheating lower die 62, and has a thermal efficiency. A housing surrounding the upper mold 61 and the lower mold 62 is provided for the purpose of heightening. In the preheating portion 16A, the upper die 61 and the lower die are aligned with respect to the workpiece W placed on the lower die 62 by aligning the concave portion 61a formed in the upper die 61 and the middle / high resin portion 27b made of the granule resin 27. By bringing 62 close, the upper mold 61 is brought into contact (pressed) from the middle-high resin portion 27b side, and the granular resin 27 is melted.

  The middle and high resin portions 27b are left by the concave portions 61a of the preheating portion 16A, and the whole can be directly heated from above without applying stress to the electronic components in the center portion. Further, the base resin portion 27a can be flatly determined by the mold surface 61b of the preheating portion 16A. According to such a preheating part 16A, it is possible to heat quickly and reduce the thickness to facilitate heating. Moreover, the air between the granule resins 27 can be extruded and reduced by the molten resin.

  In addition, you may perform a Teflon (trademark) process, a mold release film, etc. on the recessed part 61a and the metal mold | die surface 61b of the upper mold | type 61, in order to prevent sticking of resin.

  As shown in FIG. 22, the cooling unit 17A includes a cooling cooler (not shown), and is disposed so as to be opposed and movable toward and away from the cooling upper die 63 and the cooling lower die 64, and cooling efficiency. In order to increase the height, a casing surrounding the upper mold 63 and the lower mold 64 is provided. In the cooling unit 17A, the upper mold 63 and the lower mold are arranged with respect to the workpiece W placed on the lower mold 64 by aligning the concave portion 63a formed in the upper mold 63 and the middle / high resin part 27b made of the granule resin 27. 64 is brought into close proximity, the upper die 63 is brought into contact with (pressed on) the medium-high resin portion 27b side to cool the workpiece W. The recess 63a of the cooling upper mold 63 and the recess 61a of the preheating upper mold 61 have the same shape.

  The concave portion 63a of the cooling portion 17A can be quickly cooled by directly cooling from the upper side while maintaining the shape of the medium-high resin portion 27b heated by the preheating portion 16A. For this reason, shortening of the gel time until the time of shaping | molding can be suppressed.

  Although the present invention has been specifically described above based on the embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.

  For example, in the first embodiment, the case where the first and second resin drops are performed by a lighting method using the resin drop portion has been described. However, the present invention is not limited to this, and the first and second resin drops may be performed by an opening method using a holder and a shutter or a diffusion method using a shooter and a diffuser. That is, in the resin supply unit, if the first resin dropping forms the base resin portion by the granular resin on the workpiece, and the second resin dropping can form the middle and high resin portions by the granular resin on the base resin portion, the resin dropping method Does not matter. Accordingly, the first and second resin drops may be combined with a lighting method, an open method, and a diffusion method.

  Even in such a case, defective molding of the molded product can be similarly reduced. However, when the diffusion method or the open method is used, two sets of members such as a shooter and a holder that match the first and second resin dropping regions (that is, the base resin portion region and the middle-high resin portion region). It becomes necessary. In this regard, in the lighting method, since only one resin dropping portion is used in the first and second resin dropping operations, the number of parts of the resin sealing device (resin supply unit) can be suppressed.

  For example, in the first embodiment, the second resin dropping of the middle / high resin portion is performed at one place (to be supplied) (work) on the supplied portion (work) on which the first resin dropping of the base resin portion is formed. The case of performing in the central part) has been described. However, the present invention is not limited to this, and the second resin dropping may be performed at a plurality of locations (for example, two locations in the longitudinal direction of the supplied portion) on a rectangular workpiece in plan view.

  Even in the case where the second portion of the resin is dropped at one location in the central portion of the supplied portion having a rectangular shape in plan view (particularly in a strip shape), it is conceivable that the resin does not reach the corner of the supplied portion at the time of molding. On the other hand, by performing the second resin dropping at a plurality of locations, the resin can be distributed to the corner of the supplied portion having a rectangular shape in plan view at the time of molding. Therefore, it is possible to reduce molding defects of molded products such as unfilled.

  For example, in the first embodiment, the case where the planar view shape of the supplied part (work) is rectangular has been described. Not limited to this, the shape in plan view may be a polygonal shape including a rectangular shape or a circular shape. Even if the supplied parts have different shapes in plan view, if the base resin part is formed by the first resin dropping and the middle and high resin parts are formed by the second resin dropping, the molding defects of the molded product are similarly reduced. can do.

  For example, in the first embodiment, the case where a substrate on which an electronic component is mounted is applied as the supplied portion (work) has been described. However, the present invention is not limited to this, and a wafer, a carrier stage, a strip-type film, or a roll-type film may be applied as the supplied portion. Even if the supply targets are different, if the base resin part is formed by the first resin dropping and the middle and high resin parts are formed by the second resin dropping, it is possible to reduce molding defects of the molded product.

  For example, in the first embodiment, among the plurality of electronic components mounted in a matrix on the substrate, all of the electronic components on the inner row side are covered with the granular resin, and some of the electronic components on the outer row side are granulated. The case where it was made to be covered with resin was demonstrated. Not limited to this, all the electronic components on the outer row side may be covered with granular resin. This is because all electronic components are finally covered with a granular resin as a molded product.

  For example, in the first embodiment, the case where the preheating unit and the cooling unit are provided in the preliminary processing unit has been described. However, the cooling unit is not necessarily provided in the preliminary processing unit. Thus, by preheating the workpiece, when the granular resin is heated and cured in the cavity of the press part to form the resin sealing part, the temperature to be raised to the molding temperature can be reduced. Further, by preheating the workpiece, the entire workpiece is heated, so that it is easy to conduct heat during molding. Therefore, it is possible to shorten the processing time by the press part that takes the most time in the processing performed by the resin sealing device, and to reduce the manufacturing cost of the molded product.

  For example, as the lighting for dropping the granular resin into the work surface from the resin dropping portion, patterns of various supply shapes as shown in FIGS. 23A to 23F can be considered. 23A to 23C show patterns for a rectangular workpiece in plan view, and FIGS. 23D to 23F show patterns for a circular workpiece in plan view. 23A and 23D are patterns obtained by scanning the entire surface by repeating scanning in one direction. FIG. 23B and FIG. 23E are patterns obtained by scanning the entire surface so that scanning similar to the workpiece shape is concentric at the center of the workpiece. FIG. 23C and FIG. 23F are patterns obtained by scanning the entire in-plane so as to draw a spiral having the center as the center of the workpiece along the workpiece shape.

  In the patterns as shown in FIGS. 23B, 23C, 23E, and 23F, when it is desired to uniformly supply a predetermined amount of granular resin in the work surface, for example, when scanning from the outer peripheral part to the central part of the work, a constant amount is required. The granular resin can be supplied to the outer peripheral portion at a dropped amount and a constant scanning speed, and the dropping amount and the scanning speed can be adjusted to the central portion so that the granular resin can be supplied without excess or deficiency at the central portion. Also, in the patterns as shown in FIG. 23B, FIG. 23C, FIG. 23E, and FIG. 23F, when it is desired to supply the middle part of the work so as to form a middle-high resin part, for example, when scanning from the outer peripheral part of the work to the central part, It is also possible to supply the granular resin to the outer peripheral portion at a constant dropping amount and a constant scanning speed, and to adjust the dropping amount and the scanning speed to the central portion so as to supply a large amount of granular resin at the central portion.

  For example, as a workpiece applied to the resin sealing device according to the present invention, various workpieces as shown in FIGS. 24A to 24G (the broken line indicates the outer shape after sealing) are also conceivable. FIG. 24A shows a work in which a plurality of bumps are mounted on a wafer. FIG. 24B shows a work in which a plurality of semiconductor chips or TSV (Through Silicon Via) laminated chips are mounted on a wafer. FIG. 24C shows a work in which a plurality of light emitting / receiving chips (semiconductor chips) are mounted on a wafer (substrate). FIG. 24D shows a work in which a plurality of MEMS (Micro Electro Mechanical Systems) chips are mounted on a wafer. FIG. 24E shows a work in which a plurality of semiconductor chips and bumps or peers are mounted on an interposer substrate. FIG. 24F shows a work in which a plurality of laminated chips and vias are mounted on a substrate. FIG. 24G shows a work in which a plurality of semiconductor chips are fixed on a carrier (for example, stainless steel, glass, wafer) via a release sheet such as a heat release sheet. Resin can also be supplied in a shape similar to a package having a shape as indicated by a broken line in FIG.

  For example, a configuration as shown in FIG. 25 is conceivable as the operation control system of the resin supply unit. In this configuration, a PC (Personal Computer) having an input unit, a control unit, a transmission unit, and a display unit communicates with a resin sealing device having a reception unit, a control unit, a storage unit, and a table (stage) drive unit. Connected as possible. A drive control pattern is created on the PC side for each pattern ID, transmitted to the resin sealing device, and stored. On the resin sealing device side, a pattern ID is set for each product (work), and this is read out to supply the resin so that a desired pattern (actual supply pattern) is obtained. Since the speed is not stable at the beginning of the table movement, a dummy pattern is included in the drive control pattern, and the resin can be supplied after the table moving speed becomes constant.

  For example, in the first embodiment, the case where the resin dropping portion is fixed and the workpiece placement unit is moved (scanned) has been described. However, the present invention is not limited to this, and it may be a case where the resin throwing portion is moved (scanned) and the workpiece placement unit is fixed. In this case, when the granular resin is supplied with high accuracy, the resin throwing portion and the movable portion around it are enlarged, which is not necessarily appropriate, but the resin throwing portion is scanned in the XY direction with respect to the workpiece placement portion. Granule resin can be dropped.

  In the following, a technique capable of supplying granular resin with high accuracy even when the workpiece placement unit is fixed and the resin dropping portion is moved will be described with reference to FIG. FIG. 26 is a diagram for explaining a modification of the resin supply unit 12 (hereinafter referred to as a resin supply unit 12B). When dropping the granular resin onto the workpiece W from the tip of the trough 102 (position indicated by a broken line), the stage 110 (work placement portion) is disposed immediately below the tip.

  The resin supply unit 12B holds and moves at least the amount of granular resin required for molding at one time, and moves and supplies the granular resin to the workpiece W, and stores the granular resin in the movable unit. It supplies the fixed 1st storage part 101 (fixed part) to supply. The resin supply unit 12B is provided on the table 110 (work placement unit) and measures the weight of the granular resin dropped onto the work W in a state where the work W is placed. A weight scale 111 for measuring the dropped amount is provided.

  The movable portion 100 includes a trough 102 (resin dropping portion) that drops granular resin onto the workpiece W from the tip, an electromagnetic feeder 103 that vibrates the trough 102 and sends the granular resin to the tip side of the trough 102, and a trough 102. A second storage unit 104 (resin holding unit) that temporarily stores (holds) at least one molding of the workpiece W is provided. The movable portion 100 is supported by being suspended by a drive mechanism 105 and configured to be movable in the XYZ directions. In addition, the movable part 100 moves to the fixed part side when the total amount of the granule resin held by measuring the weight and volume of the granule resin to be held falls below the amount required for one molding. Are controlled to receive and replenish. In addition, the granular resin stored in the second storage unit 104 may be smaller than the one-time molding of the workpiece W. In this case, a larger size can be obtained by repeatedly supplying the workpiece W partially. The workpiece W can also be formed.

  The 1st storage part 101 is provided with the hopper 107 which stores the granular resin replenished by the operator and used for many workpiece | work shaping | molding, and when the movable part 100 has moved to the predetermined position close to the 1st storage part 101 The granular resin is supplied to the second storage unit 104.

  According to the resin supply unit 12B, the movable unit 100 including the trough 102 and its periphery can be reduced in weight and size, the movement of the trough 102 can be performed smoothly, and the drive mechanism 105 can be reduced in size. Further, the error between the dropped amount measured by the weight scale 111 and the planned dropped amount can be corrected. These lead to reduction of molding defects such as unfilling.

  Next, a resin supply process (resin dropping process) using the resin supply unit 12B will be described. In this resin supply step, for example, the trough 102 having a flat bottom surface is used, and the granule resin is dropped on the workpiece W with a uniform thickness by moving at a constant speed while dropping a uniform amount of the granule resin in the width direction. be able to.

  Specifically, by dropping the granule resin in the longitudinal direction of the trough 102, the granule resin is dropped on the workpiece W with a width corresponding to the width of the trough 102, and the granule resin is not dropped. The granular resin is supplied to the entire surface of the workpiece by repeatedly performing the operation of moving the movable unit 100 to a predetermined dropping start position that can be dropped onto an area adjacent to the previously dropped area (see FIG. 23A).

  As a result, the granule resin is dropped onto one row of band-like regions by a single dropping operation, so that the granule resin is uniformly supplied to the region where the band-like regions are arranged by repeating this. In this case, the total amount of the dropped amount in one workpiece W is measured by measuring the supplied amount for each row of the region with the weigh scale 111 and adjusting the dropped amount in the next region so as to correct the error from the planned amount. The error can be reduced as much as possible.

  Moreover, you may drop so that one row of strip | belt-shaped area | regions formed by one dropping operation may overlap partially or entirely. For example, when dropping granular resin between semiconductor chips mounted in a matrix on the workpiece W, dropping it so as to repeatedly form a band-like region, compared with dropping granular resin on the chip. The supply amount can also be increased. Thereby, molding quality can also be improved by reducing the unevenness | corrugation of the upper surface of the granular resin dropped on the workpiece | work W, and reducing the resin flow in compression molding. In addition, by supplying the granular resin so that the belt-like regions overlap each other, it is possible to supply the same thickness or to partially change the thickness by repeating the dropping operation while shifting by half the width of the belt-like region. You can also.

  According to such a configuration, by driving only the movable portion 100 holding a small amount of granular resin, the apparatus can be prevented from being enlarged and scattered from the granular resin on the workpiece W. The dropping operation can be performed without applying stress. Further, even if the partially dropped granular resin scatters, the drive mechanism 105 disposed on the upper side of the trough 102 and the second storage unit 104 is not soiled, and the maintainability can be improved.

  It is preferable that the troughs 102 having different widths can be exchanged depending on the size of the workpiece W or the like. In this case, by using the wide trough 102 for the large work W and using the narrow trough 102 for the small work W, the number of dropping operations is reduced when the work W becomes large, and the time required for dropping is shortened. It is possible to respond according to the workpiece W, such as making it easy to drop according to the shape to be dropped.

  Moreover, resin supply like the technique demonstrated in the said Embodiment 1 can also be performed using the resin supply part 12B. Specifically, while the trough 102 is moved relative to the table 110 by the drive mechanism 105, the base resin portion is formed by lighting that continuously drops the granular resin onto the work W from the tip of the trough 102, and this center A medium-high resin part can also be formed in the part.

Claims (7)

A resin supply part that drops and supplies the granular resin to the supplied part;
A transport hand for transporting the supplied part;
A press portion including a pair of molds in which cavities are formed , and
The resin supply unit
A trough to drop the granules resin to said target supply unit,
A to-be-supplied part mounting part which mounts the to-be-supplied part and is arranged directly under the trough;
A drive mechanism for moving the trough;
A first reservoir for storing the granular resin;
Compact than the first reservoir, said that the granules resin is supplied temporarily the granules resin from said first reservoir when moving to a predetermined position close to the first reservoir and pooled, second reservoir for supplying the granular resin to said trough,
Wherein provided in the supply unit mounting portion, and a weight meter for measuring the drop amount of the granules resin in a state where the object supply section is placed,
The resin supply section, the first reservoir is fixed, the trough is moved by the drive mechanism together with the second reservoir, wherein Ri configuration der which the supply unit mounting portion is fixed, said trough Supplying the granular resin to the supplied part so as to form a desired pattern by moving,
The transport hand transports and places the supplied part supplied with the granular resin into the pair of molds ,
The press part clamps the supplied part to which the granular resin is supplied with the pair of molds, and heat-cures the granular resin in the cavity to seal the resin. apparatus. The resin sealing device according to claim 1,
Wherein forming the base resin by writing a continuous drop the granules resin-receiving portion mounting portion to move relative to allowed while the more the trough-receiving portion on to the trough by the driving mechanism, the underlying A resin sealing device characterized in that a resin is supplied so as to form a middle-high resin part having a height higher than that of the base resin part at a central part of the resin part. The resin sealing device according to claim 1,
The trough a By repeating the operation resins supplied to the strip and drop the granules resin when advancing and retracting in the longitudinal direction of the trough to the supply target portion, the resin supply is performed on the entire surface of the object supply unit A resin sealing device. In the resin sealing device according to claim 3 ,
The resin sealing is characterized in that the resin supply operation is repeated while measuring the supply amount in the previous dropping operation with the weighing scale and adjusting the supply amount in the next dropping operation so as to correct the error of the planned supply amount apparatus. In the resin sealing device according to any one of claims 1 to 4 ,
Wherein said resin supplying section to said press section provided in the feeding path of the feeding section, the granules resin is provided with a preheating unit for preheating at a temperature lower than the molding temperature of the object supply unit supplied A resin sealing device characterized by that. In the resin sealing device according to claim 5 ,
A resin sealing device, comprising: a cooling unit that is provided in a transport path of the supplied part from the preheating part to the press part and cools the supplied part that has been preheated. A resin supply device that drops and supplies granular resin to a supply part,
A trough for dropping the granular resin onto the supplied part;
A to-be-supplied part mounting part which mounts the to-be-supplied part and is arranged directly under the trough;
A drive mechanism for moving the trough;
A first reservoir for storing the granular resin;
When smaller than the first reservoir and moved to a predetermined position close to the first reservoir By supplying the granular resin, the granular resin from the first reservoir is temporarily stored. A second reservoir for supplying the granular resin to the trough;
Dropping the granule resin in the state where the supplied part is placed, provided in the supplied part mounting part A weighing scale for measuring the amount,
The resin supply unit has the first storage unit fixed, and the trough together with the second storage unit. The trough is moved by the driving mechanism, and the supplied portion mounting portion is fixed. The granular resin is supplied to the supply portion so as to form a desired pattern by moving the A resin supply device characterized by the above.

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