Resin sealing equipment

Abstract

This resin sealing apparatus (1) for resin sealing molding a plurality of articles to be molded is provided with a transfer mechanism unit (17) and a processing unit (42). The transfer mechanism unit (17) transfers a plurality of plungers by the intermediary of springs that are different from each other, said plungers respectively facing resin members that are supplied into corresponding pots among a plurality of pots that are connected to cavities that are different from each other via resin flow channels that are different from each other. The processing unit (42) determines the loads to be applied to the plurality of plungers by the transfer mechanism unit (17) on the basis of the kinds of the plurality of articles to be molded, said articles being respectively arranged in corresponding cavities among the plurality of cavities, so that the loads to be applied to the resin members by the plurality of plungers are within predetermined ranges.

Description

[Technical Field]

[0001] The disclosed embodiment relates to a resin sealing apparatus. [Background technology]

[0002] Conventionally, a resin sealing device has been known which has a plurality of pots connected to different cavities via different resin flow paths, and which simultaneously moves the resin material supplied to each pot with different plungers to extrude the resin material into the cavities, thereby sealing a molded product such as a semiconductor element placed on a substrate with resin.

[0003] Regarding this type of resin sealing device, for example, Patent Document 1 discloses a technology in which multiple plungers that push out resin tablets supplied into a pot into a cavity are simultaneously pressed and driven via different buffer bodies, thereby maintaining a constant injection pressure when supplying a resin material to a cavity. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 1-146919 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when attempting to simultaneously resin-seal multiple different types of workpieces with large molding volumes, such as power cards, with the resin sealing device described in Patent Document 1, the injection pressure of the resin material into some cavities may not satisfy the allowable range. In this case, the resin sealing device described in Patent Document 1 cannot properly resin-seal multiple workpieces in a single molding operation.

[0006] One aspect of the embodiment has been made in consideration of the above, and aims to provide a resin sealing device that can perform resin sealing molding of multiple molded products of different types simultaneously in a single molding operation. [Means for solving the problem]

[0007] According to one aspect of the embodiment, a resin sealing apparatus is a resin sealing apparatus for resin-sealing a plurality of molded products, and includes a movement mechanism and a processing section. The movement mechanism moves, via different springs, a plurality of plungers each facing a resin material supplied into a corresponding one of a plurality of pots connected to a corresponding one of the cavities via a different resin flow path. The processing section determines, based on the type of each of the plurality of molded products disposed in the corresponding one of the plurality of cavities, a load to be applied by the movement mechanism to the plurality of plungers so that the load applied by each of the plurality of plungers to the resin material falls within a predetermined range. [Effects of the Invention]

[0008] According to one aspect of the embodiment, it is possible to provide a resin sealing apparatus that can simultaneously perform resin sealing molding of a plurality of different types of molded products in a single molding operation. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing an example of the configuration of a resin sealing apparatus according to an embodiment. [Figure 2] FIG. 2 is a cross-sectional view of a main body of the resin sealing apparatus according to the embodiment. [Figure 3] FIG. 3 is a diagram for explaining the load applied to a plurality of plungers by the movement mechanism when semiconductor elements of the same type are resin-encapsulated at the same time in the resin-encapsulating apparatus according to the embodiment. [Figure 4] FIG. 4 is a diagram for explaining the load applied to a plurality of plungers by the movement mechanism when two or more different types of semiconductor elements are simultaneously resin-sealed in the resin-sealing apparatus according to the embodiment. [Figure 5] FIG. 5 is a diagram for explaining the load applied to multiple plungers by the moving mechanism when two or more different types of semiconductor elements are simultaneously resin-molded in the resin-molding apparatus according to the embodiment, and is determined by the processing unit. [Figure 6] FIG. 6 is a diagram showing an example of a partial configuration including a control unit in the resin sealing apparatus according to the embodiment. [Figure 7] FIG. 7 is a diagram illustrating an example of a load candidate table stored in the storage unit according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a resin sealing device disclosed in the present application will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the following embodiments.

[0011] 1, a resin sealing apparatus 1 according to the embodiment includes a main body 10, a code reading unit 20, an imaging unit 30, and a control unit 40. The main body 10 includes a mold 11 including an upper mold and a lower mold (not shown).

[0012] Such a mold 11 is provided with a plurality of pots 12 into which resin materials (not shown) are respectively supplied, a plurality of resin flow paths 13 each connected to a corresponding one of the plurality of pots 12, and a plurality of cavities 14 each connected to a corresponding one of the plurality of resin flow paths 13.

[0013] A workpiece 3 mounted on a base material such as a lead frame is placed in each of the multiple cavities 14. The workpiece 3 includes one or more components for a package with a large molding volume, such as a power card. Components included in the workpiece 3 include, but are not limited to, a semiconductor element, a circuit board, and a heat sink. For example, the component included in the workpiece 3 may be only a semiconductor element.

[0014] 2, plungers 15 are provided in the main body 10. The plungers 15 are provided corresponding to the plurality of pots 12, and the number of plungers 15 is the same as the number of pots 12. Each of the plurality of plungers 15 applies a load to a resin member 18 supplied into a corresponding one of the plurality of pots 12.

[0015] As a result, the resin material 18 supplied into the pot 12 melts and flows into the cavity 14 through the resin flow path 13, thereby performing resin sealing molding of the molded product 3 placed in the cavity 14. The resin flow path 13 includes a cull resin path and a runner resin path.

[0016] As shown in Fig. 2, the main body 10 is provided with a movement mechanism 17 to which plungers 15 are attached via springs 16. Each of the plurality of plungers 15 is attached to the movement mechanism 17 via a different spring 16. As the movement mechanism 17 moves, the plurality of plungers 15 are moved, and a load is applied to the resin members 18 supplied to the plurality of pots 12, respectively.

[0017] The code reading unit 20 shown in FIG. 1 reads information from a code provided on a substrate such as a lead frame that has been carried into the main body 10, and outputs the information from the read code. The code provided on the substrate is a two-dimensional code such as a QR Code (registered trademark) (Quick Response Code), but may also be a barcode or other code. Such a code is provided on the substrate by, for example, printing or engraving it on the substrate, but a sticker with the code printed on it may also be affixed to the substrate. In the following description, one workpiece 3 is placed on one substrate, but two or more workpieces may also be placed on one substrate.

[0018] The imaging unit 30 captures images of the multiple molding workpieces 3 placed on multiple base materials and outputs the captured images. The imaging unit 30 includes an imaging element such as a CMOS (Complementary Metal-Oxide-Semiconductor) image sensor and a lens.

[0019] The control unit 40 controls the main body 10 to simultaneously perform resin encapsulation molding of multiple workpieces 3 placed on multiple base materials in a single molding operation. For example, the control unit 40 controls a drive unit provided in the main body 10 to move a lower mold (not shown) and hold multiple base materials on which the workpieces 3 are placed, which are carried in from a loader (not shown), in the lower mold. Then, the control unit 40 controls a drive unit (not shown) provided in the main body 10 to move the lower mold or the upper mold to bring the upper mold and the lower mold into contact with each other.

[0020] The control unit 40 determines the load that the movement mechanism unit 17 applies to the multiple plungers 15 so that the load that each of the multiple plungers 15 applies to the resin member 18 falls within a predetermined moldable load range, based on the type of each of the multiple molded products 3. The moldable load range is an allowable range of the load that can be applied to the resin member 18, and is set to properly perform resin encapsulation molding of the molded products 3. The control unit 40 controls the movement mechanism unit 17 so that the movement mechanism unit 17 presses the multiple plungers 15 with the determined load. This allows the resin encapsulation device 1 to simultaneously perform resin encapsulation molding of multiple molded products 3 of different types in a single molding operation.

[0021] Here, we will explain the load applied to multiple plungers 15 by the movement mechanism 17 when resin-sealing molding is performed on the same type of molded article 3 simultaneously in a single molding operation by the resin sealing device 1. In the following, to make it easier to understand the groups of molded article 3, pot 12, resin flow path 13, cavity 14, plunger 15, spring 16, and resin member 18, numbers indicating the group numbers may be added as subscripts. Note that although the following example shows three groups, the number of groups may be two, four, or more.

[0022] 3, a total load of 30 kgf is applied by the movement mechanism 17 to the plurality of plungers 151, 152, and 153. In the example shown in Fig. 3, since the three workpieces 31, 32, and 33 are of the same type and size, the load Pa of 30 kgf applied by the movement mechanism 17 is evenly distributed, and a load of 10 kgf is applied to each of the plungers 151, 152, and 153 via the springs 161, 162, and 163.

[0023] Therefore, a load of 10 kgf is applied to the resin member 181 by the plunger 151 moving inside the pot 121, and the resin member 181 melts and is supplied to the cavity 141 through the resin flow path 131. Therefore, the load applied to the resin member 181 becomes 10 kgf.

[0024] Similarly, a load of 10 kgf is applied to the resin member 182 by the plunger 152 moving inside the pot 122, and the resin member 182 melts and is supplied to the cavity 142 via the resin flow path 132. Therefore, the load applied to the resin member 182 becomes 10 kgf.

[0025] Furthermore, a load of 10 kgf is applied to the resin member 183 by the plunger 153 moving in the pot 123, and the resin member 183 melts and is supplied to the cavity 143 via the resin flow path 133. Therefore, the load applied to the resin member 183 becomes 10 kgf.

[0026] Next, we will explain the load applied to the multiple plungers 15 by the movement mechanism 17 when multiple different types of molded products 3 are simultaneously resin-sealed in a single molding operation by the resin sealing device 1. In the example shown in Fig. 4, the size of the molded product 33 is smaller than the sizes of the molded products 31 and 32, and the load of 30 kgf applied by the movement mechanism 17 is distributed at different rates and applied to the plungers 151, 152, and 153.

[0027] 4, a load of 11.54 kgf is applied to plungers 151 and 152, and a load of 6.92 kgf is applied to plunger 153. Therefore, the load applied by plungers 151 and 152 to resin members 181 and 182 is 11.54 kgf, while the load applied by plunger 153 to resin member 183 is 6.92 kgf.

[0028] Here, if the moldable load range for the workpiece 3 is 7 kgf or more and 13 kgf or less, the load applied to the cavity 143 is 6.92 kgf, so the load applied to the workpiece 33 placed in the cavity 143 does not satisfy the moldable load range.

[0029] Therefore, the control unit 40 changes the load applied by the movement mechanism unit 17 to the multiple plungers 15, for example, from 30 kgf to 32 kgf. As a result, as shown in Fig. 5, the load applied by the plungers 151 and 152 to the resin members 181 and 182 becomes 12.3 kgf, and the load applied by the plunger 153 to the resin member 183 becomes 7.4 kgf. Therefore, even if the moldable load range is 7 kgf or more and 13 kgf or less, all of the loads applied to the cavities 141, 142, and 143 are within the moldable load range.

[0030] In this way, the control unit 40 determines the load to be applied by the moving mechanism unit 17 to the multiple plungers 151, 152, 153 based on the type of each of the multiple molded products 31, 32, 33 placed in the corresponding cavity among the multiple cavities 141, 142, 143, so that the load applied by each of the multiple plungers 151, 152, 153 to the resin members 181, 182, 183 falls within the moldable load range.

[0031] As a result, the resin sealing apparatus 1 can resin seal a plurality of different types of workpieces 3 in a single molding operation. The control unit 40 of the resin sealing apparatus will be described in more detail below. As shown in FIG. 6, the control unit 40 includes a storage unit 41 and a processing unit 42. The processing unit 42 includes an information acquisition unit 43, a determination unit 44, and a decision unit 45.

[0032] The storage unit 41 stores, for each type of molded workpiece 3, size information indicating the size of the molded workpiece 3 and moldable load range information indicating the moldable load range of the molded workpiece 3. The moldable load range is the allowable range of the load that is applied to the resin member 18 and is required for resin sealing molding of the molded workpiece 3. The moldable load range may be the same regardless of the type of molded workpiece 3.

[0033] The storage unit 41 also stores, for each combination of types of the plurality of workpieces 3, load candidate information including information on load candidates that are candidates for the load Pa, which is the load that the movement mechanism unit 17 applies to the plurality of plungers 15. The storage unit 41 also stores, for each total volume range of the plurality of workpieces 3, load candidate information including information on load candidates that are candidates for the load Pa. The total volume range is the range of the total volume of the plurality of workpieces 3 placed on the plurality of bases that is stored in advance in the storage unit 41.

[0034] The processing unit 42 can selectively execute a first mode, a second mode, or a third mode as a processing mode for determining the load Pa that the movement mechanism unit 17 applies to the plurality of plungers 15. The operation of determining the load Pa is performed each time the resin sealing device 1 performs resin sealing molding of the plurality of workpieces 3 placed on the base at once, i.e., each time a molding operation is performed by the resin sealing device 1.

[0035] The first mode is a processing mode in which the type of each of the multiple workpieces 3 placed on the base is identified, and the load Pa is calculated and determined from the identified types of the multiple workpieces 3. The second mode is a processing mode in which the type of each of the multiple workpieces 3 placed on the base is identified, and the load Pa is determined from among candidate loads corresponding to the combination of the types of the multiple workpieces 3 based on the identification results.

[0036] The third mode is a processing mode in which the type of each of the multiple molded products 3 placed on the multiple bases is identified, and based on the identification results, the total volume of the multiple molded products 3 placed on the multiple bases is calculated, and a load Pa corresponding to the calculated total volume is determined from among the load candidates for each total volume range of the multiple molded products 3.

[0037] The determination unit 45 outputs information about the load Pa determined in this manner to the drive unit 19 provided in the main body 10. As a result, the drive unit 19 drives the movement mechanism unit 17 so that the load Pa applied by the movement mechanism unit 17 to the plurality of plungers 15 becomes the load Pa determined by the determination unit 45.

[0038] First, a description will be given of the process in which the processing unit 42 determines the load Pa in the first mode using the code information from the code reading unit 20. The information acquiring unit 43 acquires the code information from the code reading unit 20.

[0039] The code provided on the base includes information indicating the type of each of the multiple workpieces 3 placed on the base, and the determination unit 44 determines the type of each of the multiple workpieces 3 placed on the base based on the code information acquired from the code reading unit 20 by the information acquisition unit 43. Then, the determination unit 45 determines the load Pa to be applied by the movement mechanism unit 17 to the multiple plungers 15 based on the type of each of the multiple workpieces 3 determined by the determination unit 44.

[0040] Specifically, the determination unit 45 acquires from the storage unit 41 moldable load range information associated with each type of the plurality of molded products 3 determined by the determination unit 44. Then, based on the moldable load range information acquired from the storage unit 41, the determination unit 45 determines the load Pa so that the load applied by each of the plurality of plungers 15 to the resin member 18 falls within the corresponding moldable load range.

[0041] Here, the multiple molded products 3 are molded products 31, 32, and 33, and the sizes of the molded products 31, 32, and 33 are G1, G2, and G3, and the moldable load ranges corresponding to the sizes G1, G2, and G3 are moldable load ranges R1, R2, and R3. Also, the lower limit of the moldable load ranges R1, R2, and R3 is R min1 ,R min2 ,R min3 The upper limit of the formable load range R1, R2, R3 is R max1 ,R max2 ,R max3 Let us assume that:

[0042] If the sizes G1, G2, G3 of the molded products 31, 32, 33 are the same, the amounts of resin members 181, 182, 183 injected into the cavities 141, 142, 143 are the same, and the positions of the plungers 151, 152, 153 in the vertical direction in Fig. 2 are the same during resin sealing molding by the resin sealing device 1. Therefore, the lengths of the springs 161, 162, 163 in the vertical direction in Fig. 2 are the same, and as described above, the load Pa applied to the plungers 151, 152, 153 is also the same.

[0043] When the sizes G1, G2, G3 of the workpieces 31, 32, 33 are different, the amounts of the resin members 181, 182, 183 injected into the cavities 141, 142, 143 differ according to the sizes G1, G2, G3 of the workpieces 31, 32, 33, and the positions of the plungers 151, 152, 153 in the vertical direction in Fig. 2 differ during resin sealing molding by the resin sealing device 1. Therefore, the lengths of the springs 161, 162, 163 in the vertical direction in Fig. 2 differ, and as described above, the loads Pa applied to the plungers 151, 152, 153 differ.

[0044] Loads P1, P2, and P3 applied to resin members 181, 182, and 183 by plungers 151, 152, and 153 are expressed by, for example, the following equations (1) to (3). In the following equations (1) to (3), magnitudes G1, G2, and G3 are the volumes of molded articles 31, 32, and 33. P1=Pa×G1 / {G1+G2+G3} ···(1) P2=Pa×G2 / {G1+G2+G3} ···(2) P3=Pa×G3 / {G1+G2+G3} ···(3)

[0045] The loads P1, P2, and P3 are set so as to satisfy the following constraints (4) to (6). R min1 ≦P1≦R max1 ···(4) R min2 ≦P2≦R max2 ···(5) R min3 ≦P3≦R max3 ···(6)

[0046] The determination unit 45 can determine the load Pa that the movement mechanism unit 17 applies to the multiple plungers 15, for example, by changing ``Pa'' in the above equations (1) to (3) so that the loads P1, P2, and P3 satisfy the constraints (4) to (6) above.

[0047] The determination unit 45 determines the median R mid1 The difference between "P1" and "P2" and the median value of "R2" mid2 The difference between "P2" and "P3" and the median R mid3 The load Pa can be calculated so that the sum of squares of the difference between "P1" and "P2" is minimized. In this way, the determining unit 45 determines the median value R of the formable load ranges R1, R2, and R3. mid1 ,R mid2 ,R mid3 The loads P1, P2, and P3 can be brought as close as possible to the

[0048] Furthermore, in the above example, the determination unit 45 calculates the load Pa using the sizes G1, G2, G3 of the workpieces 31, 32, 33 and the moldable load ranges R1, R2, R3 as parameters, but it is sufficient if the load Pa can be calculated so as to satisfy the constraints (4) to (6) above, and the calculation formula is not limited to the above formulas (1) to (3).

[0049] Next, a description will be given of the process in which the processing unit 42 determines the load Pa in the first mode using information on the captured image from the imaging unit 30. The information acquisition unit 43 acquires information on the captured image from the imaging unit 30.

[0050] The determination unit 44 then determines the type of each of the multiple molding workpieces 3 placed on the base based on the information of the captured image acquired from the imaging unit 30 by the information acquisition unit 43. The determination of the type of each of the multiple molding workpieces 3 by the determination unit 44 is performed, for example, by pattern matching processing or image recognition processing using a learning model obtained by machine learning.

[0051] As in the case of processing in the first mode using code information, the determination unit 45 determines the load Pa based on the type of each of the multiple molded products 3 determined by the judgment unit 44 so that the load Pa applied by each of the multiple plungers 15 to the resin member 18 falls within the corresponding moldable load range.

[0052] Next, a process will be described in which the processing unit 42 determines the load Pa in the second mode using the code information from the code reading unit 20. The information acquiring unit 43 acquires the code information from the code reading unit 20. As in the case of the processing in the first mode using the code information, the determining unit 44 determines the type of each of the multiple workpieces 3 placed on the base based on the code information acquired by the information acquiring unit 43 from the code reading unit 20.

[0053] The determination unit 45 determines, as the load Pa, a load candidate corresponding to the combination of the types of the multiple molded products 3 determined by the determination unit 44, from among the multiple load candidates whose information is stored in the memory unit 41. Here, it is assumed that the multiple molded products 3 placed on the base are molded products 31, 32, and 33, and that the types of the molded products 3 include molded product 3 of type A and molded product 3 of type B, which are different in size.

[0054] The load candidates whose information is stored in the memory unit 41 are four load candidates Pa1, Pa2, Pa3, and Pa4. Load candidate Pa1 is a load candidate for a combination in which the workpieces 31, 32, and 33 are all type A molded products 3. Load candidate Pa2 is a load candidate for a combination in which two of the workpieces 31, 32, and 33 are type A molded products 3 and one is type B molded product 3. Load candidate Pa3 is a load candidate for a combination in which one of the workpieces 31, 32, and 33 is type A molded product 3 and two are type B molded products 3. Load candidate Pa4 is a load candidate for a combination in which all three of the workpieces 31, 32, and 33 are type B molded products 3.

[0055] In this case, if the types of the molded products 31, 32, and 33 determined by the determination unit 44 are all type A, the determination unit 45 determines the load candidate Pa1 as the load Pa. Furthermore, if the determination unit 44 determines that two of the molded products 31, 32, and 33 are type A molded products 3 and one is type B molded product 3, the determination unit 45 determines the load candidate Pa2 as the load Pa.

[0056] Furthermore, when the determination unit 44 determines that one of the molded products 31, 32, 33 is a molded product 3 of type A and the other two are molded products 3 of type B, the determination unit 45 determines the load candidate Pa3 as the load Pa. Furthermore, when the determination unit 44 determines that the types of the molded products 31, 32, 33 determined by the determination unit 44 are all type B, the determination unit 45 determines the load candidate Pa4 as the load Pa.

[0057] In this way, the determination unit 45 determines the load candidate corresponding to the combination of multiple types of workpieces 3 from among multiple pre-set load candidates as the load Pa, thereby reducing the computational load compared to the process of determining the load Pa in the first mode.

[0058] Next, a description will be given of the process in which the processing unit 42 determines the load Pa in the second mode using information about the captured image from the imaging unit 30. The information acquisition unit 43 acquires information about the captured image from the imaging unit 30. As in the case of the process in the first mode using information about the captured image, the determination unit 44 determines the type of each of the multiple workpieces 3 placed on the base based on the information about the captured image acquired from the imaging unit 30 by the information acquisition unit 43.

[0059] Similar to the processing in the second mode using code information, the determination unit 45 determines the load candidate corresponding to the combination of the types of the multiple molded products 3 determined by the determination unit 44 as the load Pa from among the multiple load candidates whose information is stored in the memory unit 41.

[0060] Next, a process will be described in which the processing unit 42 determines the load Pa in the third mode using the code information from the code reading unit 20. The information acquiring unit 43 acquires the code information from the code reading unit 20. As in the case of the process in the first mode using the code information, the determining unit 44 determines the type of each of the multiple workpieces 3 placed on the multiple bases based on the code information acquired by the information acquiring unit 43 from the code reading unit 20.

[0061] The determination unit 45 calculates the total volume Vt of the plurality of workpieces 3 based on the type of each of the plurality of workpieces 3 determined by the determination unit 44. The memory unit 41 stores size information indicating the size of the workpiece 3 for each type of workpiece 3, and the determination unit 45 calculates the total volume Vt of the plurality of workpieces 3 based on the size information stored in the memory unit 41. The size of the workpiece 3 is the volume of the workpiece 3, as described above.

[0062] Next, the determination unit 45 determines, as the load Pa, the load candidate corresponding to the total volume range that includes the total volume Vt of the multiple molded products 3, from among the load candidates for each total volume range of the multiple molded products 3 whose information is stored in the memory unit 41. Here, it is assumed that the multiple molded products 3 are molded products 31, 32, and 33, and that the types of the molded products 3 include molded product 3 of type A and molded product 3 of type B, which have different volumes. It is also assumed that the volume of the molded product 3 of type A is volume V1, and the volume of the molded product 3 of type B is volume V2.

[0063] The load candidates whose information is stored in the storage unit 41 are, for example, load candidates Pa1, Pa2, Pn3, and Pa4. As shown in Fig. 7, the storage unit 41 stores, for example, a load candidate table containing total volume ranges of the multiple workpieces 3 and load candidate information including information on load candidates corresponding to the total volume ranges.

[0064] 7, a load candidate Pa1 is associated with a total volume range VR1, a load candidate Pa2 is associated with a total volume range VR2, a load candidate Pa3 is associated with a total volume range VR3, and a load candidate Pa4 is associated with a total volume range VR4. The total volume ranges VR1, VR2, VR3, and VR4 are ranges that do not overlap with one another.

[0065] If the types of the molded products 31, 32, and 33 determined by the judgment unit 44 are all type A, the determination unit 45 calculates the total volume Vt as three times the volume V1, and if the total volume Vt is within the total volume range VR1, determines the load candidate Pa1 as the load Pa.

[0066] In addition, when the judgment unit 44 judges that two of the molded products 31, 32, 33 are molded products 3 of type A and one is molded product 3 of type B, the determination unit 45 calculates the total volume Vt by doubling the volume V1 and adding it to the volume V2, and if the total volume Vt is within the total volume range VR2, determines the load candidate Pa2 as the load Pa.

[0067] In addition, when the judgment unit 44 judges that one of the molded products 31, 32, 33 is a molded product 3 of type A and the other two are molded products 3 of type B, the determination unit 45 calculates the total volume Vt by doubling the volume V2 and adding it to the volume V1, and if the total volume Vt is within the total volume range VR3, determines the load candidate Pa3 as the load Pa.

[0068] Furthermore, if the types of the workpieces 31, 32, and 33 determined by the judgment unit 44 are all type B, the determination unit 45 calculates the total volume Vt as three times the volume V2, and if the total volume Vt is within the total volume range VR4, determines the load candidate Pa4 as the load Pa.

[0069] In this way, the determination unit 45 determines the load candidate corresponding to the total volume Vt of the multiple workpieces 3 as the load Pa from among multiple pre-set load candidates, so that the load Pa can be easily determined even when there are many types of workpieces 3.

[0070] Next, a process will be described in which the processing unit 42 determines the load Pa in the third mode using information on the captured image from the imaging unit 30. The information acquisition unit 43 acquires information on the captured image from the imaging unit 30. As in the case of the process in the first mode using information on the captured image, the determination unit 44 determines the type of each of the multiple workpieces 3 placed on the base based on the information on the captured image acquired from the imaging unit 30 by the information acquisition unit 43.

[0071] Similar to the processing in the third mode using code information, the determination unit 45 calculates the total volume Vt of the multiple molded products 3 determined by the judgment unit 44, and determines the load candidate corresponding to the total volume range including the calculated total volume Vt as the load Pa from among the load candidates for each total volume range of the multiple molded products 3 whose information is stored in the memory unit 41.

[0072] The number of pairs of total volume ranges and load candidates included in the load candidate table is not limited to the example shown in Fig. 7, and may be 4 or less, or 5 or more. By increasing the number of pairs of total volume ranges and load candidates, the determination unit 45 can determine the load Pa with higher accuracy.

[0073] When both the code information and the captured image information are acquired by the information acquisition unit 43, the processing unit 42 can determine the type of the molded workpiece 3 by prioritizing the code information. This allows the processing unit 42 to accurately determine the type of the molded workpiece 3 even when the accuracy of determining the type of the molded workpiece 3 based on the captured image is not high.

[0074] Furthermore, when only one of the code information and the captured image information is acquired by the information acquisition section 43, the processing section 42 can determine the type of the workpiece 3 using the one of the information.

[0075] In addition, when both code information and captured image information are acquired by the information acquisition unit 43, the processing unit 42 can determine the type of molded product 3 based on the captured image information if it is not possible to determine the type of molded product 3 based on the code information.

[0076] Furthermore, when both the code information and the captured image information are acquired by the information acquisition unit 43, the processing unit 42 can also determine the load Pa if the type of the molded product 3 determined based on the code information matches the type of the molded product 3 determined based on the captured image. If the type of the molded product 3 determined based on the code information does not match the type of the molded product 3 determined based on the captured image, the processing unit 42 can output a notification to the outside that the type of the molded product 3 cannot be determined.

[0077] Furthermore, when the code provided on the substrate contains combination information, which is information on the combination of types of the multiple workpieces 3 placed on the substrate, the processing unit 42 can also selectively execute a fourth mode as a processing mode for determining the load Pa. The fourth mode will be described below.

[0078] The memory unit 41 stores information on load candidates for each combination of the types of multiple molded products 3, and the processing unit 42 acquires from the memory unit 41 information on load candidates corresponding to the combination of the types of multiple molded products 3 specified by the combination information included in the code information acquired by the information acquisition unit 43, and determines the load candidate as the load Pa. The combination information is, for example, number or code information that uniquely defines the combination. This allows the processing unit 42 to determine the load Pa without determining the type of each of the multiple molded products 3.

[0079] The type of the workpiece 3 determined by the determination unit 44 may be the size of the workpiece 3. In this case, information indicating the size of the workpiece 3 does not need to be stored in the storage unit 41.

[0080] The resin sealing apparatus 1 may also be provided with a pressure sensor that detects the pressure in each cavity 14. In this case, the processing unit 42 determines whether the pressure in each cavity 14 output from the pressure sensor during the molding operation is within the moldable load range. If the processing unit 42 determines that the pressure is not within the moldable load range, it can output a notification to the outside that the load to be applied to the resin member 18 is not within the moldable load range.

[0081] In the above example, the processing unit 42 is described as being able to selectively execute the first mode, second mode, third mode, and fourth mode, but the processing unit 42 may be able to execute only one mode, or two or three modes.

[0082] As described above, the resin sealing apparatus 1 according to the embodiment is a resin sealing apparatus that resin-seals and molds multiple workpieces 3 simultaneously in a single molding operation, and includes a movement mechanism 17 and a processing unit 42. The movement mechanism 17 moves, via different springs 16, multiple plungers 15 that each face a resin member 18 supplied to a corresponding one of multiple pots 12 connected to different cavities 14 via different resin flow paths 13. The processing unit 42 determines the load Pa that the movement mechanism 17 applies to the multiple plungers 15 so that the load that each plunger 15 applies to the resin member 18 falls within a predetermined range, based on the type of each of the multiple workpieces 3 disposed in the corresponding one of the multiple cavities 14. This allows the resin sealing apparatus 1 to resin-seal and mold multiple workpieces 3 of different types simultaneously in a single molding operation.

[0083] The resin sealing apparatus 1 also includes a code reading unit 20 that reads information from codes provided on the plurality of base materials on which the plurality of molded articles 3 are placed. The processing unit 42 includes a determination unit 44 and a decision unit 45. The determination unit 44 determines the type of each of the plurality of molded articles 3 based on the information from the codes read by the code reading unit 20. The decision unit 45 determines the load Pa to be applied by the movement mechanism unit 17 based on the type of each of the plurality of molded articles 3 determined by the determination unit 44. This allows the resin sealing apparatus 1 to easily determine the type of each of the plurality of molded articles 3 from the codes provided on the plurality of base materials on which the plurality of molded articles 3 are placed.

[0084] The resin sealing apparatus 1 also includes an imaging unit 30 that images the multiple molded articles 3 and outputs information about the captured images. The processing unit 42 includes a determination unit 44 and a decision unit 45. The determination unit 44 determines the type of each of the multiple molded articles 3 based on the information about the captured images output from the imaging unit 30. The decision unit 45 determines the load Pa to be applied by the movement mechanism unit 17 based on the type of each of the multiple molded articles 3 determined by the determination unit 44. This allows the resin sealing apparatus 1 to simultaneously perform resin sealing molding of multiple molded articles 3 of different types in a single molding operation, without providing codes on the multiple base materials on which the multiple molded articles 3 are placed.

[0085] The resin sealing apparatus 1 also includes a storage unit 41 that stores information on a predetermined range. The above-described moldable load ranges R1, R2, and R3 are examples of the predetermined range. The determination unit 45 calculates the load Pa based on the type of each of the multiple workpieces 3 determined by the determination unit 44 and the information on the predetermined range stored in the storage unit 41. This allows the resin sealing apparatus 1 to accurately calculate the load Pa.

[0086] The resin sealing apparatus 1 also includes a storage unit 41 that stores information on load candidates for each combination of the types of the plurality of molded articles 3. The determination unit 45 acquires, from the storage unit 41, information on load candidates that correspond to the combination of the types of the plurality of molded articles 3 determined by the determination unit 44, among the information on the plurality of load candidates stored in the storage unit 41, and determines the acquired information on the load candidate as information on the load Pa to be applied by the movement mechanism unit 17. This allows the resin sealing apparatus 1 to reduce the processing load compared to when the load Pa is calculated.

[0087] Furthermore, the predetermined range is set for each type of molded article 3. As a result, even if the predetermined range differs depending on the type of molded article 3, the resin sealing apparatus 1 can simultaneously perform resin sealing molding of multiple molded articles 3 of different types in a single molding operation.

[0088] The resin sealing apparatus 1 also includes a storage unit 41 that stores information on load candidates for each total volume range of the multiple molded products 3. The determination unit 45 calculates the total volume Vt of the multiple molded products 3 based on the type of each of the multiple molded products 3 determined by the determination unit 44. The determination unit 45 acquires, from the storage unit 41, information on a load candidate that corresponds to the total volume Vt from the information on the multiple load candidates stored in the storage unit 41. The determination unit 45 determines the acquired information on the load candidate as information on the load Pa to be applied by the movement mechanism unit 17. This allows the resin sealing apparatus 1 to easily determine information on the load Pa even when there are many types of molded products 3.

[0089] Further advantages and modifications will readily occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents. [Explanation of symbols]

[0090] 1 Resin sealing equipment 3,31,32,33 Molded product 10 Main body 11 Mold 12,121,122,123 pots 13,131,132,133Resin flow path 14, 141, 142, 143 cavities 15,151,152,153 Plunger 16,161,162,163 Spring 17 Moving mechanism section 18,181,182,183 Resin parts 19 Drive unit 20 Code reader 30 Imaging unit 40 Control Unit 41 Storage section 42 Processing section 43 Information Acquisition Department 44 Judgment section 45 Decision Section

Claims

1. A resin sealing device that seals multiple molded products with resin at the same time in a single molding operation, a movement mechanism that moves, via different springs, a plurality of plungers that respectively face the resin members supplied into corresponding pots among a plurality of pots that are connected to different cavities via different resin flow paths; a processing unit that determines, based on the type of each of the plurality of molded products disposed in the corresponding one of the plurality of cavities, a load to be applied by the movement mechanism to the plurality of plungers so that the load applied by each of the plurality of plungers to the resin member falls within a predetermined range. A resin sealing device characterized by:

2. a code reading unit that reads information about codes provided on the plurality of base materials on which the plurality of molding workpieces are placed, The processing unit a determination unit that determines the type of each of the plurality of workpieces based on the information of the code read by the code reading unit; a determination unit that determines the load to be applied by the movement mechanism unit based on the type of each of the plurality of workpieces determined by the determination unit.

2. The resin sealing apparatus according to claim 1.

3. an imaging unit that images the plurality of molding workpieces and outputs information about the captured images; The processing unit a determination unit that determines the type of each of the plurality of molding workpieces based on information about the captured images output from the imaging unit; a determination unit that determines the load to be applied by the movement mechanism unit based on the type of each of the plurality of workpieces determined by the determination unit.

2. The resin sealing apparatus according to claim 1.

4. a storage unit that stores the information within the predetermined range, The determination unit The load to be applied by the movement mechanism is calculated based on the type of each of the plurality of workpieces determined by the determination unit and the information of the predetermined range stored in the storage unit.

4. The resin sealing device according to claim 2 or 3.

5. a storage unit that stores information on load candidates for each combination of the types of the plurality of workpieces; The determination unit Among the information on the plurality of load candidates stored in the storage unit, information on the load candidates corresponding to the combination of the types of the plurality of molded products determined by the determination unit is acquired from the storage unit, and the acquired information on the load candidates is determined as information on the load to be applied by the movement mechanism unit.

4. The resin sealing device according to claim 2 or 3.

6. a storage unit that stores information on load candidates for each total volume range; The determination unit A total volume of the plurality of molded workpieces is calculated based on the type of each of the plurality of molded workpieces determined by the determination unit, and information on a load candidate corresponding to the total volume is acquired from the storage unit among information on a plurality of load candidates stored in the storage unit, and the acquired information on the load candidate is determined as information on the load to be applied by the movement mechanism unit.

4. The resin sealing device according to claim 2 or 3.

7. The predetermined range is: Set for each type of workpiece 7. The resin sealing device according to claim 1, wherein the resin sealing device is a resin sealing device.

Images