JP2021091094A - Resin molding apparatus and method for producing resin molded product - Google Patents

Abstract

To provide a resin molding apparatus and a method for producing a resin molded product, that can grasp transfer output more accurately.SOLUTION: The resin molding apparatus comprises: a molding tool; plunger columns 641, 643 configured to allow transfer of resin to the molding tool; a detector 66 configured to allow detection of detected values for the transfer output of the plunger columns 641, 643; and a control part 68 configured to allow control of the transfer output. The resin molding apparatus is configured so that the number of the plunger columns 641, 643 can be applied to either a single number or a plurality of columns. The control part 68 is configured to be able to switch a calibration value for calibrating the detected values detected by the detector so as to generate the transfer output according to the number of columns of the plunger columns 641, 643.SELECTED DRAWING: Figure 10

Description

The present disclosure relates to a resin molding apparatus and a method for manufacturing a resin molded product.

For example, in Patent Document 1, by monitoring the force applied to the plunger separately for the injection resistance force and the sliding resistance force, it is possible to distinguish whether the cause of the unfilled or nest defect is due to an abnormality in the resin characteristics or an abnormality in the apparatus. A semiconductor resin encapsulation device that is accurately and automatically controlled is described.

Japanese Unexamined Patent Publication No. 11-260844

The semiconductor resin encapsulation device described in Patent Document 1 has an injection resistance force during molding and a threshold value (sliding threshold value) obtained from a load cell at the lower part of the plunger when the plunger is raised by the device drive control unit. By comparison, it is determined whether or not a resin abnormality has occurred.

In some cases, the plungers of the semiconductor resin sealing device are arranged in one direction to form a plunger row, and the number of rows of the plunger row is one or more to manufacture a resin molded product. However, when the same threshold value is used regardless of whether the number of columns of the plunger is singular or plural, it may not be possible to add an appropriate transfer output to the plunger.

According to the embodiments disclosed herein, a molding die, a plunger row configured to transfer resin to the molding die, a detector configured to detect a detection value related to the transfer output of the plunger row, and a transfer. It is a resin molding apparatus including a control unit configured to control the output, and the resin molding apparatus is configured so that the number of rows of the plunger row can be applied to either one or a plurality of rows of the plunger row. Can provide a resin molding apparatus configured to calibrate the detection value detected by the detector so as to generate a transfer output according to the number of columns in the plunger column. ..

According to the embodiment disclosed here, it is a method of manufacturing a resin molded product for manufacturing a resin molded product using the above-mentioned resin molding apparatus, and is a step of installing a molding object in a molding mold and molding. It is possible to provide a method for producing a resin molded product, which comprises a step of molding a mold, a step of resin molding an object to be molded, and a step of opening the mold.

According to the embodiment disclosed here, it is possible to provide a resin molding apparatus and a method for manufacturing a resin molded product, which can more accurately grasp the transfer output.

It is a schematic plan view of the manufacturing apparatus of the resin molded article of embodiment. It is a schematic perspective view of the resin molding apparatus of embodiment. It is a schematic partial sectional view of the resin molding apparatus of embodiment. It is a schematic side view of an example of the transfer drive mechanism used in the resin molding apparatus of embodiment. It is a schematic plan view of the transfer drive mechanism shown in FIG. It is a schematic side view of another example of the transfer drive mechanism used in the resin molding apparatus of embodiment. It is a schematic plan view of the transfer drive mechanism shown in FIG. It is a flowchart of the manufacturing method of the resin molded article of embodiment. It is a schematic partial cross-sectional view which illustrates an example of the process of determining a calibration value. It is a block diagram of the main part of the resin molding apparatus of an embodiment. It is a schematic partial cross-sectional view which illustrates an example of the process of installing a molding object. It is a schematic plan view of an example of the 2nd type used in the resin molding apparatus of an embodiment. It is a schematic partial cross-sectional view which illustrates an example of the process of installing a molding object. It is a schematic partial cross-sectional view which illustrates the process of mold clamping of the manufacturing method of the resin molded article of embodiment. FIG. 5 is a schematic enlarged partial cross-sectional view illustrating the transfer of resin into a cavity by the movement of a plunger. FIG. 5 is a schematic enlarged partial cross-sectional view illustrating the transfer of resin into a cavity by the movement of a plunger. It is a schematic plan view of another example of the 2nd type used for the resin molding apparatus of an embodiment. It is a flowchart of an example of the operation which the control part of the resin molding apparatus of embodiment controls the transfer output of a plunger row.

Hereinafter, embodiments will be described. In addition, in the drawing used for the description of embodiment, the same reference numeral shall represent the same part or the corresponding part.

FIG. 1 shows a schematic plan view of the resin molded product manufacturing apparatus of the embodiment. As shown in FIG. 1, the resin molded product manufacturing apparatus of the first embodiment includes a molding module A, an inloader module B, and an outloader module C.

The molding module A includes a molding mechanism portion 1000 configured to be capable of resin molding an object to be molded, such as a semiconductor chip mounted on a lead frame. The inloader module B includes an inloader 2000 configured to be able to supply a molding object and a resin to the molding module A. The outloader module C includes an outlawer 3000 configured so that a resin-shaped product can be taken out from the molding module A. The inloader 2000 and the outloader 3000 are configured to be movable in the directions indicated by the arrows in FIG.

The molding module A and the inloader module B are detachably connected to each other by, for example, a connecting mechanism such as a bolt or a pin. Further, the molding module A and the outloader module C are also detachably connected to each other by a connecting mechanism such as a bolt or a pin.

The resin molded product manufacturing apparatus of the embodiment shown in FIG. 1 includes two molding modules A, and the number of molding modules A can be increased or decreased according to the production amount. The resin molded product manufacturing apparatus of the embodiment may include, for example, one molding module A, or may include four molding modules A. That is, the resin molded product manufacturing apparatus of the embodiment can be configured so that the number of molding modules A can be increased or decreased.

Further, in the resin molded product manufacturing apparatus of the embodiment shown in FIG. 1, the molding module A, the inloader module B, and the outloader module C are arranged in the order shown in FIG. 1, but for example, molding. A resin molded product manufacturing apparatus is composed of one master unit in which module A, inloader module B, and outloader module C are integrated, and one or more slave units having only molding module A. May be good. It should be noted that one molding module A can also be regarded as a manufacturing apparatus for the resin molded product of the embodiment.

FIG. 2 shows a schematic perspective view of the resin molding apparatus of the embodiment. The resin molding apparatus of the embodiment shown in FIG. 2 is arranged in the mold mechanism portion 1000 of the resin molded article manufacturing apparatus of the embodiment shown in FIG.

As shown in FIG. 2, the resin molding apparatus of the embodiment includes a first platen 200, a second platen 400, a movable platen 300, and a tie bar 500. The second platen 400 faces the first platen 200 at a distance.

The movable platen 300 is located between the first platen 200 and the second platen 400, and can move between the first platen 200 and the second platen 400 with respect to the first platen 200 along the tie bar 500. It is configured in.

The tie bar 500 is a rod-shaped member extending between the first platen 200 and the second platen 400. One end of the tie bar 500 is fixed to the first platen 200, and the other end of the tie bar 500 is fixed to the second platen 400.

The resin molding apparatus of the embodiment shown in FIG. 2 includes a first mold holder 30 mounted on the first platen 200, a second mold holder mounting block 50 mounted on the movable platen 300, and a second mold holder mounting block. It includes a second mold holder 40 mounted on the 50, a transfer drive mechanism 60 in the second mold holder mounting block 50, and a mold clamping mechanism 600 between the movable platen 300 and the second platen 400. Here, the second type holder 40 is attached to the movable platen 300 via the second type holder attachment block 50.

FIG. 3 shows a schematic partial cross-sectional view of the resin molding apparatus of the embodiment. As shown in FIG. 3, the resin molding apparatus of the embodiment includes a first mold 10 as a molding mold held by the first mold holder 30 and a second mold as a molding mold held by the second mold holder 40. It has 20 and.

The mold clamping mechanism 600 can mold the first mold 10 and the second mold 20 by moving the movable platen 300 with respect to the first platen 200 and pressing the first mold 10 and the second mold 20. It is configured in.

The first type holder 30 includes a first plate 31 and a first assist block 32. The first plate 31 is configured to be attachable to the first platen 200, and is provided with a heat insulating plate and a heater plate in this order from the first platen 200 side. The first assist block 32 is configured so that the first type 10 can be fixed under the first plate 31.

The second type holder 40 includes a second assist block 41 and a second plate 42. The second plate 42 is configured to be mountable on the second type holder mounting block 50, and is provided with a heat insulating plate and a heater plate in this order from the second type holder mounting block 50 side. The second assist block 41 is configured so that the second type 20 can be fixed on the second plate 42.

The first mold 10 includes a first recess 11, a cal portion 12, and a first mold plate 13. The first recess 11 may have a shape corresponding to the shape of the object to be molded after resin molding. The cal portion 12 is used as a pool portion of the resin before the resin is transferred to the object to be molded. The first mold plate 13 is configured to be fixed to the first plate 31 of the first mold holder 30.

The second mold 20 includes a second recess 21, a pot 22, and a second mold plate 23. The second recess 21 may have a shape corresponding to the shape of the object to be molded after resin molding. The pot 22 is used as an installation portion of a resin used for resin molding of an object to be molded. The second mold plate 23 is configured to be fixed to the second plate 42 of the second mold holder 40.

FIG. 4 shows a schematic side view of an example of the transfer drive mechanism used in the resin molding apparatus of the embodiment. As shown in FIG. 4, the transfer drive mechanism 60 of the embodiment includes a first transfer drive shaft 63a and a first detector 66a such as a load cell on the first transfer drive shaft 63a. Further, the transfer drive mechanism 60 of the embodiment includes a third transfer drive shaft 63c and a third detector 66c such as a load cell on the third transfer drive shaft 63c.

Further, the transfer drive mechanism 60 of the embodiment includes a plunger unit support plate 62 on the first detector 66a and a third detector 66c, and a plunger unit 61 on the plunger unit support plate 62.

The plunger unit 61 includes a plunger 64 for injecting resin into a molding die and a plunger unit main body 65. The plunger 64 is a rod-shaped member extending linearly in the Z-axis direction. In the example shown in FIG. 4, the tip 740 of the plunger 64 is located outside the plunger unit body 65, and the other end (not shown ) of the tip 740 of the plunger 64 is located inside the plunger unit body 65. ..

FIG. 5 shows a schematic plan view of the transfer drive mechanism 60 of the embodiment. FIG. 5 is a schematic plan view of the transfer drive mechanism 60 shown in FIG. 4 when viewed from the tip 740 of the plunger 64.

As shown in the plan view of FIG. 5, the plungers 64 form a singular row of plunger rows 641 arranged side by side in the X-axis direction. As shown in the plan view of FIG. 5, the plunger row 641 of the singular row is configured such that the respective tips 740 of the plunger 64 are located on an arbitrary straight line 741.

As shown in the plan view of FIG. 5, the plunger row 641 has two regions R1 and regions separated by a center line CC extending in the X-axis direction that bisects the width of the plunger unit main body 65 in the Y-axis direction. It is located in one of the regions R1 of R2. Further, a straight line 741 extending in the X-axis direction through each tip 740 of the plunger 64 constituting the plunger row 641 is located in the region R1.

The single plunger row 641 or straight line 741 may be located in the other region R2 of the two regions R1 and the region R2 separated by the center line CC of the plunger unit main body 65. The configuration in which the plunger row 641 or the straight line 741 of the singular row is located in either the region R1 or the region R2 is desired for various reasons such as high-mix low-volume production.

As shown in the plan view of FIG. 5, the transfer drive mechanism 60 includes a first transfer drive shaft 63a, a second transfer drive shaft 63b, and a third transfer drive shaft 63c. As shown in the plan view of FIG. 5, the first transfer drive shaft 63a, the third transfer drive shaft 63c, and the second transfer drive shaft 63b are located in this order in the X-axis direction.

As shown in the plan view of FIG. 5, in the transfer drive mechanism 60 of the embodiment, a portion other than on the straight line 632 passing through the center 631a of the first transfer drive shaft 63a and the center 631b of the second transfer drive shaft 63b. The center 631c of the third transfer drive shaft 63c is located at.

Further, as shown in the plan view of FIG. 5, the transfer drive mechanism 60 includes a first detector 66a and a second transfer drive shaft 63b between the first transfer drive shaft 63a and the plunger unit support plate 62. It includes a second detector 66b between the plunger unit support plate 62 and a third detector 66c between the third transfer drive shaft 63c and the plunger unit support plate 62.

The transfer drive mechanism 60 can raise and lower the plunger unit body 65 by the first transfer drive shaft 63a, the second transfer drive shaft 63b, and the third transfer drive shaft 63c provided with, for example, a ball screw, that is, the plunger row. The 641 is configured to be able to move up and down.

The plunger row 641 of the transfer drive mechanism 60 is configured so that the resin arranged above the plunger row 641 can be transferred to the molding die by raising the plunger row 641. The force applied by the transfer drive mechanism 60 to raise the plunger row 641 is the transfer output of the plunger row 641. The first detector 66a, the second detector 66b, and the third detector 66c are configured to be able to detect the detected value related to the transfer output of the plunger row 641.

FIG. 6 shows a schematic side view of another example of the transfer drive mechanism 60 used in the resin molding apparatus of the embodiment. The transfer drive mechanism 60 shown in FIG. 6 is characterized in that it includes a plurality of rows of plungers. As described above, the resin molding apparatus of the embodiment is configured so that the transfer drive mechanism 60 having a single row of plunger rows and the transfer drive mechanism 60 having a plurality of rows of plunger rows can be exchanged and used. Has been done. That is, the resin molding apparatus of the embodiment is configured to be applicable when the number of rows of the plunger rows is singular or plural.

The plunger unit 61 of the transfer drive mechanism 60 of the embodiment shown in FIG. 6 includes plungers 64a and 64b for injecting resin into the molding die. Plungers 64a and 64b are also rod-shaped members extending linearly in the Z-axis direction. In the example shown in FIG. 6, the tip 740a of the plunger 64a is located outside the plunger unit main body 65, and the other end (not shown) of the tip 740a of the plunger 64a is located inside the plunger unit main body 65. .. Further, the tip 740b of the plunger 64b is located outside the plunger unit main body 65, and the other end (not shown) of the tip 740b of the plunger 64b is located inside the plunger unit main body 65.

FIG. 7 shows a schematic plan view of the transfer drive mechanism 60 of the embodiment. FIG. 7 is a schematic plan view of the transfer drive mechanism 60 shown in FIG. 6 when viewed from the tips 740a and 740b of the plungers 64a and 64b.

As shown in the plan view of FIG. 7, the transfer drive mechanism 60 includes a plurality of rows of plunger rows 643. The plural-row plunger row 643 is configured by arranging the singular row plunger row 641 and the singular row plunger row 642 at intervals in the Y-axis direction. The singular plunger row 641 is composed of a plurality of plungers 64a, and the singular plunger row 642 is composed of a plurality of plungers 64b. The plunger row 641 of the singular row and the plunger row 642 of the singular row extend in the X-axis direction, respectively.

As shown in the plan view of FIG. 7, the plunger row 641 of the singular row is located in one of the two regions R1 and the region R2 separated by the center line CC of the plunger unit main body 65, and the other region R1. A single row of plunger rows 642 is located in region R2. Further, a straight line 741a extending in the X-axis direction through the tips 740a of each of the plurality of plungers 64a constituting the plunger row 641 of the singular row is located in the region R1, and the plurality of plungers constituting the plunger row 642 of the singular row are formed. A straight line 741b extending in the X-axis direction through each of the tips 740b of 64b is located in the region R2.

It goes without saying that the configuration of the plurality of plunger rows 643 is not limited to the configuration shown in the plan view of FIG. They may be arranged side by side at intervals.

Hereinafter, a method for producing a resin molded product according to an embodiment will be described with reference to FIGS. 8 to 18 as an example of a method for producing a resin molded product using the resin molding apparatus of the embodiment. FIG. 8 shows a flowchart of the method for manufacturing the resin molded product of the embodiment. As shown in FIG. 8, the method for manufacturing the resin molded product of the embodiment includes a step of determining a calibration value (S10), a step of installing a molding target (S20), a step of molding, and a step of molding (S30). It includes a resin molding step (S40) and a mold opening step (S50). Hereinafter, each step will be described in more detail.

As shown in FIG. 8, the method for producing the resin molded product of the embodiment starts from the step (S10) of determining the calibration value. The step (S10) of determining the calibration value can be performed, for example, as follows. First, the plunger unit 61 of the transfer drive mechanism 60 shown in FIG. 4 or FIG. 6 is replaced with the verification jig 900 shown in the schematic partial cross-sectional view of FIG. The verification jig 900 includes a dummy plunger unit main body 65c and a dummy plunger 64c on the dummy plunger unit main body 65c. Further, the second mold 20 is removed from the resin molding apparatus of the embodiment shown in FIG.

Next, in the resin molding apparatus of the embodiment shown in FIG. 3, the verification jig 900 shown in FIG. 9 is installed in place of the transfer drive mechanism 60. Next, as shown in FIG. 9, a reference detector 800 such as an externally calibrated load cell is installed on the second plate 42. Next, for example, a ball screw or the like drives the first transfer drive shaft 63a, the second transfer drive shaft 63b, and the third transfer drive shaft 63c to raise the verification jig 900. As a result, the dummy plunger 64c of the verification jig 900 applies a force to the reference detector 800, and the reference detector 800 detects the measured value of the force applied to the dummy plunger 64c. At the same time, the force measurement value is also detected by the first detector 66a, the second detector 66b, and the third detector 66c. The reference detector 800 has a built-in amplifier, and the measured value output from the reference detector 800 is a value amplified by the amplifier.

Here, since the reference detector 800 is externally calibrated, the measured value of the force detected by the reference detector 800 is measured by the first detector 66a, the second detector 66b, and the third detector 66c. It is a more accurate value than the force measurement value based on the detected detection value. In this way, based on the measured value of the force detected by the reference detector 800, the measured value of the force based on the measured value by the first detector 66a, the second detector 66b and the third detector 66c is obtained. Calibrate. In the resin molding apparatus of the embodiment, it is possible to detect a more accurate value of the transfer output of the plunger row by using the calibration value. As the calibration value, a value corresponding to each of the number of columns of the plunger column is determined.

For example, when the plunger row 641 of the singular row shown in FIG. 5 is used, in the plan view of FIG. 5, the straight line 741 extending in the X-axis direction is cut off by the plunger unit main body 65. The step of determining the calibration value by installing it at the midpoint 751 of the line segment is performed. Further, when the plurality of rows of plunger rows 643 shown in FIG. 7 are used, in the reference detector 800, in the plan view of FIG. 7, the center line CC extending in the X-axis direction is the plunger unit main body 65. A step of determining the calibration value is performed by being installed at the midpoint 752 of the cut line segment.

FIG. 10 shows a block diagram of a main part of the resin molding apparatus of the embodiment. As shown in FIG. 10, the resin molding apparatus of the embodiment includes, for example, an input / output unit 67 such as a touch panel, a control unit 68 connected to the input / output unit 67, and a transfer drive mechanism 60 connected to the control unit 68. , An amplifier 69 such as an amplifier connected to the control unit 68, and a detector 66 (first detector 66a, second detector 66b, and third detector 66c) connected to the amplifier 69. There is.

In the step of determining the calibration value, the resin molding apparatus of the embodiment operates as follows, for example. First, a command is output from the input / output unit 67 to the control unit 68 to perform the step of determining the calibration value. As a result, the control unit 68 outputs a command to drive the transfer drive shaft (first transfer drive shaft 63a, second transfer drive shaft 63b, and third transfer drive shaft 63c). In response to the instruction from the control unit 68, the transfer drive shaft raises the verification jig 900.

The detector 66 (first detector 66a, second detector 66b and third detector 66c) performs detection at the same time as measuring the force applied to the dummy plunger 64c by the reference detector 800. Next, the first detector 66a, the second detector 66b, and the third detector 66c amplify the detected value by the amplifier 69 and then output it to the control unit 68.

After that, based on the force value output from the reference detector 800, the calibration value is based on the value output from the first detector 66a, the second detector 66b, and the third detector 66c via the amplifier. To determine. The calibration value can be determined by the control unit 68. The control unit 68 includes a storage unit. The storage unit of the control unit 68 stores the calibration values corresponding to the number of columns of the plunger row when the plunger row is a single row and when the plunger row is a plurality of (two or more rows). The control unit 68 may include, for example, a PLC (programmable logic controller) or an HMI (human machine interface) in addition to the storage unit.

Next, as shown in FIG. 8, after the step of determining the calibration value (S10), the step of installing the object to be molded (S20) is performed. The step (S20) of installing the object to be molded can be performed as follows, for example. First, as shown in the schematic partial cross-sectional view of FIG. 11, the object 1 to be molded is installed between the first mold 10 and the second mold 20. In the example shown in FIG. 11, the object 1 to be molded is installed in the recess 21 of the second mold 20. As the object 1 to be molded, for example, a semiconductor chip mounted on a lead frame or the like can be used.

FIG. 12 shows a schematic plan view of an example of the second type 20 used in the embodiment. As shown in FIG. 12, the second recess 21 of the second type 20 is provided only on one side of the pot 22, which is also a passage through which the plunger 64 moves. Further, in the example shown in FIG. 12, the shape of the second recess 21 is rectangular, and the shape of the pot 22 is circular, but the shape is not limited to these shapes.

Next, the mold clamping step (S30) is performed. The mold clamping step (S30) can be performed as follows, for example. First, the mold clamping mechanism 600 raises the movable platen 300, moves the second mold 20 with respect to the fixed first mold 10, and as shown in the schematic partial cross-sectional view of FIG. 13, the first mold 10 And the second mold 20 can be pressed. The mold clamping between the first type 10 and the second type 20 may be performed by moving the first type 10 with respect to the fixed second type 20, and the first type 10 and the second type 20 may be performed. It may be done by moving both of them.

Next, the resin molding step (S40) is performed. The resin molding step (S40) can be performed, for example, as follows. First, the transfer drive mechanism 60 shown in FIG. 4 raises the plunger unit 61 via the plunger unit support plate 62. As a result, the plunger 64 rises, and as shown in the schematic partial cross-sectional view of FIG. 14, the resin supplied into the pot 22 is pushed out of the pot 22.

Next, the resin extruded to the outside of the pot 22 melts and accumulates in the cal portion 12. Next, the molten resin is transferred into the cavity 90 formed by the recess 11 of the first mold 10 and the recess 21 of the second mold 20. After that, the resin of the object 1 to be molded is molded by sealing the object 1 to be molded by solidifying the resin.

15 and 16 show a schematic enlarged partial cross-sectional view illustrating the transfer of the resin 70 into the cavity 90 by the movement of the plunger 64 in the resin molding apparatus of the embodiment. As shown in FIG. 15, a solid resin 70a is installed in the pot 22 after the step of installing the object to be molded (S20) and before the step of mold clamping (S30), and the plunger 64 Is located below the solid resin 70a.

In the subsequent step of resin molding the object 1 to be molded (S40), as shown in FIG. 16, the plunger 64 extrudes the solid resin 70a in the pot 22 toward the cal portion 12 of the first mold 10, and the first mold 10. The solid resin 70a is melted by a heater plate of type 1 10 (not shown), and the melted resin 70 is accumulated inside the cal portion 12. After that, the molten resin 70 is transferred to the object 1 to be molded in the cavity 90 through the resin passage 14 by the pressure generated by the movement of the plunger 64. After that, the molten resin 70 solidifies, and the resin molding of the object 1 to be molded is completed.

In the above, the resin molded product of the embodiment when the resin molding apparatus of the embodiment uses a transfer drive mechanism 60 having a single row of plunger rows 641 composed of a plurality of plungers 64 shown in FIG. Although the method of manufacturing the above is described, the resin molding apparatus of the embodiment uses, for example, the second type 20 as shown in the schematic plan view of FIG. 17, and a plurality of rows as shown in FIGS. 6 and 7, for example. It is also possible to manufacture a resin molded product by switching to the transfer drive mechanism 60 having the plunger row of.

The control unit 68 is configured to be able to control the transfer output of the plunger train. FIG. 18 shows a flowchart of an example of an operation in which the control unit 68 of the resin molding apparatus of the embodiment controls the transfer output of the plunger row. The control unit 68 first acquires the operating conditions from the input / output unit 67. Here, the operating conditions include the number of columns in the plunger column and the transfer output value (transfer output set value) set in advance corresponding to the number of columns in the plunger column.

Next, the control unit 68 outputs a command value (calibration value) to the amplifier 69 based on the operating conditions. The control unit 68 outputs the calibration value stored in the storage unit of the control unit 68 according to the number of columns in the plunger row. That is, when the transfer drive mechanism 60 having a single number of columns in the plunger row is used, the control unit 68 outputs a calibration value when the number of rows in the plunger row is singular. When the transfer drive mechanism 60 having a single number of columns in the plunger row is replaced with a transfer drive mechanism 60 having a plurality of rows in the plunger row, the control unit 68 switches to a calibration value according to the number of rows in the plunger row. Is output to the amplifier 69.

Next, the control unit 68 outputs a command value (a set value of the transfer output) to the transfer drive mechanism 60 based on the operating conditions. The control unit 68 outputs a set value of the transfer output stored in the storage unit of the control unit 68 according to the number of columns in the plunger column. For example, when the number of columns in the plunger column is singular, the control unit 68 outputs the set value of the transfer output when the number of columns in the plunger column is singular. Further, for example, when the number of columns in the plunger column is plurality, the control unit 68 outputs a transfer output set value corresponding to the number of columns in the plunger column.

Next, the control unit 68 confirms whether or not the transfer output of the plunger row of the transfer drive mechanism 60 has reached the set value of the transfer output. The control unit 68 acquires the transfer output value of the plunger sequence based on the detection by the detector 66 (the first detector 66a, the second detector 66b, and the third detector 66c) through the amplifier 69. Here, the transfer output value from the amplifier 69 is a value obtained by calibrating the transfer output value of the plunger column based on the detection by the detector 66 based on the calibration value. Then, the control unit 68 determines whether or not the acquired transfer output value has reached the set value of the transfer output based on the comparison of these values. The calibration for generating the transfer output may be performed by the control unit 68 or the detector 66 (first detector 66a, second detector 66b, and third detector 66c). Further, a calibration unit may be provided between the control unit 68 and the amplifier 69, and the calibration unit may perform calibration when generating a transfer output.

When the control unit 68 determines that the calibrated value of the transfer output of the plunger row has reached the set value of the transfer output, the control unit 68 changes the transfer output of the plunger row with respect to the transfer drive mechanism 60. Command is not output. That is, the control unit 68 maintains the transfer output value at a constant value so as to stop the ascending operation of the plunger row.

On the other hand, when the control unit 68 determines that the calibrated value of the transfer output has not reached the set value of the transfer output, the transfer drive mechanism 60 is used to increase the transfer output of the plunger row. Output the command. The control unit 68 outputs a command for increasing the transfer output of the plunger row to the transfer drive mechanism 60 until it is determined that the transfer output value of the plunger row has reached the set value of the transfer output.

The left column of Table 1 shows the transfer output value of the plunger row actually applied to the verification jig 900 shown in FIG. 9 instead of the transfer drive mechanism 60 and detected by the reference detector. Further, in the middle column of Table 1, it is actually applied by the resin molding apparatus of the embodiment using the transfer drive mechanism 60 having the plunger row 641 of the singular row shown in FIGS. 4 and 5, and the detector 66 (first The transfer output value of the plunger row based on the detector 66a, the second detector 66b and the third detector 66c) is shown. The difference between these output values is shown in the right column of Table 1.

The left column of Tables 2 and 3 shows the transfer output value of the plunger row actually applied to the verification jig 900 shown in FIG. 9 instead of the transfer drive mechanism 60 and detected by the reference detector. Further, in the middle column of Tables 2 and 3, the detector 66 is actually applied by the resin molding apparatus of the embodiment using the transfer drive mechanism 60 having the two rows of plunger rows 643 shown in FIGS. 6 and 7. The transfer output value of the plunger row based on (1st detector 66a, 2nd detector 66b and 3rd detector 66c) is shown. The difference between these output values is shown in the right column of Tables 2 and 3.

The numerical value in the column of "output value [kN] of the reference detector" in Tables 1 to 3 indicates the transfer output value of the plunger column actually applied by the reference detector 800, and "output value of the detector [kN]". The numerical values in the column of "" are the plunger rows based on the detection values actually detected by the detectors 66 (first detector 66a, second detector 66b and third detector 66c) of the resin molding apparatus of the embodiment. The transfer output value of is shown. Further, the numerical values in the "detector output value [kN]" column in Tables 1 to 3 are the numerical values in the "reference detector output value [kN]" column and the "test pressurization [kN]" column. It shows the difference from the numerical value of. It is shown that the smaller the numerical value in the column of "difference [kN]" in Tables 1 to 3, the more accurately the value of the transfer output of the actual plunger column can be grasped.

The "detector output value [kN]" in Tables 1 and 2 shows the value after calibration with the calibration value when the number of columns in the plunger column is single, whereas in Table 3. The numerical value in the column of "detector output value [kN]" indicates the output value calculated based on the calibration value when the number of columns of the plunger column is two.

As is clear from the comparison between the numerical values in the “difference [kN]” column of Table 2 and the numerical values in the “difference [kN]” column of Table 3, a transfer drive mechanism having two rows of plunger rows was used. In this case, it is better to calculate the value of the transfer output of the actual plunger column by calculating based on the calibration value corresponding to the plunger column of the two columns than to calculate based on the calibration value corresponding to the plunger column of the single column. It was confirmed that it can be grasped more accurately.

As described above, the resin molding apparatus of the embodiment is configured so that the control unit can switch the calibration value for calibrating the transfer output value detected by the detector according to the number of rows in the plunger row. The transfer output of is more accurately controlled.

Although the embodiments have been described above, it is planned from the beginning that the configurations of the above-described embodiments are appropriately combined.

The embodiments disclosed this time should be considered to be exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and it is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1 Molding object, 10 1st mold, 11 1st recess, 12 cal part, 13 1st mold plate, 14 resin passage, 20 2nd mold, 21 2nd recess, 22 pot, 23 2nd mold plate, 30th Type 1 holder, 31 1st plate, 32 1st assist block, 40 2nd type holder, 41 2nd assist block, 42 2nd type plate, 50 2nd type holder mounting block, 60 transfer drive mechanism, 61 plunger unit, 62 Plunger unit support plate, 63a 1st transfer drive shaft, 63b 2nd transfer drive shaft, 63c 3rd transfer drive shaft, 64, 64a, 64b plunger, 64c dummy plunger, 65 plunger unit body, 65c dummy plunger unit Main body, 66 detector, 66a first detector, 66b second detector, 66c third detector, 67 input / output unit, 68 control unit, 69 amplifier, 70, 70a resin, 90 cavity, 100 mold mechanism Part, 200 1st platen, 300 movable platen, 400 2nd platen, 500 tie bar, 600 mold clamping mechanism, 631a, 631b, 631c center, 632,741,741a, 741b straight line, 641,642,643 plunger row, 740, 740a, 740b tip, 751,752 midpoint, 800 reference detector, 900 verification jig, 1000 mold mechanism, 2000 inloader, 3000 outloader.

The numerical value in the column of "output value [kN] of the reference detector" in Tables 1 to 3 indicates the transfer output value of the plunger column actually applied by the reference detector 800, and "output value of the detector [kN]". The numerical values in the column of "" are the plunger rows based on the detection values actually detected by the detectors 66 (first detector 66a, second detector 66b and third detector 66c) of the resin molding apparatus of the embodiment. The transfer output value of is shown. The numerical values in the "difference [kN]" column in Tables 1 to 3 are the numerical values in the "reference detector output value [kN]" column and the numerical values in the " detector output value [kN]" column. Shows the difference with. The smaller the numerical value in the "difference [kN]" column in Tables 1 to 3, the more accurately the value of the transfer output of the actual plunger column can be grasped.

1 Molding object, 10 1st mold, 11 1st recess, 12 cal part, 13 1st mold plate, 14 resin passage, 20 2nd mold, 21 2nd recess, 22 pot, 23 2nd mold plate, 30th Type 1 holder, 31 1st plate, 32 1st assist block, 40 2nd type holder, 41 2nd assist block, 42 2nd type plate, 50 2nd type holder mounting block, 60 transfer drive mechanism, 61 plunger unit, 62 Plunger unit support plate, 63a 1st transfer drive shaft, 63b 2nd transfer drive shaft, 63c 3rd transfer drive shaft, 64, 64a, 64b plunger, 64c dummy plunger, 65 plunger unit body, 65c dummy plunger unit Main body, 66 detector, 66a first detector, 66b second detector, 66c third detector, 67 input / output unit, 68 control unit, 69 amplifier, 70, 70a resin, 90 cavity , 200th 1 platen, 300 movable platen, 400 second platen, 500 tie bar, 600 mold clamping mechanism, 631a, 631b, 631c center, 632,741,741a, 741b straight line, 641,642,643 plunger row, 740,740a, 740b tip , 751, 752 midpoint, 800 reference detector, 900 verification jig, 1000 mold mechanism, 2000 inloader, 3000 outloader.

Claims (6)

Mold and
A plunger row configured to transfer the resin to the molding mold and
A detector configured to be able to detect the detected value related to the transfer output of the plunger column, and
A resin molding apparatus including a control unit configured to control the transfer output.
The resin molding apparatus is configured so that the number of rows of the plunger rows can be applied to either one or more.
The control unit is configured to be able to switch the calibration value for calibrating the detected value detected by the detector so as to generate the transfer output according to the number of the plunger rows. Molding equipment. The resin molding apparatus according to claim 1, further comprising an amplifier connected to the control unit and the detector. The resin molding apparatus according to claim 1 or 2, wherein the control unit includes a storage unit configured to store the calibration value. The resin molding apparatus according to any one of claims 1 to 3, further comprising a transfer drive mechanism configured to move the plunger row up and down. A method for manufacturing a resin molded product for manufacturing a resin molded product using the resin molding apparatus according to any one of claims 1 to 4.
The process of installing the object to be molded in the molding mold and
The process of molding the molding mold and
The process of resin molding the object to be molded and
A method for producing a resin molded product, comprising a step of opening the mold. Further provided with a step of determining the calibration value,
The method for manufacturing a resin molded product according to claim 5, wherein the resin molding step includes a step in which the control unit controls the transfer output using the calibration value.

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