TW202123351A - Resin molding apparatus and resin molded product manufacturing method - Google Patents

Abstract

The present application relates to a resin molding apparatus and resin molded product manufacturing method. A resin molding apparatus includes a molding die, a plunger row (641, 643) that can transfer a resin to the molding die, a detector (66) that can detect a detection value relating to transfer output of the plunger row (641, 643), and a controller (68) that can control the transfer output. The resin molding apparatus is adapted to a single-row plunger row or a multiple-row plunger row (641, 643). The controller (68) changes a calibration value for calibration of the detection value detected by the detector so as to generate the transfer output in accordance with the number of rows in the plunger row (641, 643).

Description

Resin molding device and manufacturing method of resin molded product

The present disclosure relates to a resin molding device and a method of manufacturing a resin molded product.

For example, Japanese Patent Laid-Open No. 11-260844 (Patent Document 1) describes a semiconductor resin sealing device that divides the force applied to a plunger into injection resistance and sliding resistance and monitors them. ), to distinguish whether the unfilled or defective cavity is caused by abnormal resin properties or abnormal device, and the device can be reliably controlled automatically.

The semiconductor resin sealing device described in Patent Document 1 combines the injection resistance during molding and the threshold value (sliding threshold value) obtained by the load cell under the plunger when the plunger is raised by the device drive control unit. Make comparisons to determine whether resin abnormalities have occurred.

The plungers of the semiconductor resin sealing device may be arranged in one direction to form a plunger row, and the number of the plunger rows may be single or multiple to produce a resin molded product. However, when the same threshold is used in any case where the number of plunger rows is single or plural, it may not be possible to provide an appropriate transmission output to the plunger.

According to the embodiments disclosed herein, there can be provided a resin molding apparatus including: a molding die; a plunger row configured to be able to transfer resin to the molding die; and a detector configured to detect the output related to the transmission of the plunger row Detection value; and the control unit is configured to be able to control the transmission output, and the resin molding device is configured to be able to apply the number of plunger rows to any one of a single or a plurality of columns, and the control unit is configured to be able to switch to the detector The detected detection value is corrected by a correction value to generate a transmission output according to the number of columns of the plunger.

According to the embodiment disclosed herein, there is provided a method of manufacturing a resin molded product for manufacturing a resin molded product using the resin molding apparatus, and includes the steps of: setting a molded object in a molding die; and clamping the molding die. ; Resin molding of the molded object; and opening the molding die.

According to the embodiments disclosed herein, it is possible to provide a resin molding apparatus and a method for manufacturing a resin molded product, and it is possible to more accurately grasp the transmission output.

The above and other objectives, features, aspects and advantages of the present invention will be shown in accordance with the following detailed description related to the present invention understood in association with the drawings.

Hereinafter, the embodiment will be described. In addition, in the drawings for explaining the embodiments, the same reference signs indicate the same parts or corresponding parts.

FIG. 1 shows a schematic plan view of the manufacturing apparatus of the resin molded article of the embodiment. As shown in FIG. 1, the manufacturing apparatus of the resin molded article of the first embodiment includes a molding module (molding module) A, an in-loader module B, and an out-loader module C.

The mold module A includes a mold mechanism section 1000 configured to be capable of resin molding a molding object such as a semiconductor chip mounted on a lead frame. The load module B includes a loader 2000, and the loader 2000 is configured to supply the molding module A with a molded object and resin. The load-out module C includes a load-out device 3000, and the load-out device 3000 is configured to be able to take out the resin molded product from the mold module A. The loader 2000 and the loader 3000 are configured to be movable in the direction indicated by the arrow in FIG. 1.

The molding module A and the loading module B are detachably connected to each other by a connecting mechanism such as a screw or a pin. In addition, the mold module A and the load-out module C are also detachably connected to each other by a connecting mechanism such as a screw or a pin.

The manufacturing apparatus of the resin molded article of the embodiment shown in FIG. 1 includes two molding modules A, but the number of molding modules A can be adjusted according to the production volume. The manufacturing apparatus of the resin molded article of the embodiment may include, for example, one molding module A, or may include the molding module A added to four. That is, the manufacturing apparatus of the resin molded product of embodiment can be set as the structure which can increase or decrease the number of molded modules A.

In addition, in the resin molded product manufacturing apparatus of the embodiment shown in FIG. 1, the molding module A, the loading module B, and the loading module C are arranged in the order shown in FIG. 1, but for example, the molding module A may be used. , A master machine integrated with the load module B and the load module C and one or more slave machines including only the molded module A constitute a resin molded product manufacturing device. In addition, one molding module A can also be understood as the manufacturing apparatus of 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 section 1000 of the resin molded product manufacturing apparatus of the embodiment shown in FIG. 1.

As shown in FIG. 2, the resin molding apparatus of the embodiment includes a first platform 200, a second platform 400, a movable platform 300 and a tie bar 500. The second platform 400 and the first platform 200 face away from each other.

The movable platform 300 is located between the first platform 200 and the second platform 400 and is configured to be movable relative to the first platform 200 along the connecting rod 500 between the first platform 200 and the second platform 400.

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

The resin molding apparatus of the embodiment shown in FIG. 2 includes: a first mold holder 30 installed on a first platform 200, a second mold holder mounting block 50 installed on a movable platform 300, and a second mold holder mounting block 50 The second mold holder 40 of the block 50, the transmission drive mechanism 60 in the second mold holder installation block 50, and the mold clamping mechanism 600 between the movable platform 300 and the second platform 400. Here, the second mold holder 40 is installed on the movable platform 300 via the second mold holder installation 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 mold held by the first mold holder 30, and a second mold 20 as a mold held by the second mold holder 40 .

The mold clamping mechanism 600 is configured to move the movable platform 300 relative to the first platform 200 and press the first mold 10 and the second mold 20 to lock the first mold 10 and the second mold 20.

The first mold holder 30 includes a first plate 31 and a first auxiliary block 32. The first plate 31 is configured to be mountable on the first platform 200, and includes a heat insulation plate and a heating plate in order from the first platform 200 side. The first auxiliary block 32 is configured to be able to fix the first mold 10 under the first plate 31.

The second mold holder 40 includes a second auxiliary block 41 and a second plate 42. The second plate 42 is configured to be mountable to the second mold holder mounting block 50, and includes a heat insulation plate and a heating plate in order from the second mold holder mounting block 50 side. The second auxiliary block 41 is configured to be able to fix the second mold 20 on the second plate 42.

The first mold 10 includes a first recess 11, a stagnant portion 12 and a first mold plate 13. The first recess 11 may include a shape corresponding to the shape of the molded object after resin molding. The stagnant portion 12 is used as a resin accumulation portion before the resin is transferred to the molded object. The first mold plate 13 is configured to be fixable 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 include a shape corresponding to the shape of the molded object after resin molding. The barrel 22 is used as a resin installation part for resin molding of a molding object. The second mold plate 23 is configured to be fixable to the second plate 42 of the second mold holder 40.

FIG. 4 shows a schematic side view of an example of a transmission drive mechanism used in the resin molding apparatus of the embodiment. As shown in FIG. 4, the transmission drive mechanism 60 of the embodiment includes a first transmission drive shaft 63a and a first detector 66a on the first transmission drive shaft 63a. The first detector 66a is a force sensor or the like. Furthermore, the transmission drive mechanism 60 of the embodiment includes a third transmission drive shaft 63c and a third detector 66c on the third transmission drive shaft 63c. The third detector 66c is, for example, a force sensor.

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

The plunger unit 61 includes a plunger 64 for injecting resin into the molding die, and a plunger unit 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 front end 740 of the plunger 64 is located outside the plunger unit body 65, and the other front end (not shown) of the plunger 64 is located inside the plunger unit body 65.

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

As shown in a plan view in FIG. 5, the plungers 64 are arranged in the X-axis direction to form a single-row plunger row 641. As shown in the plan view in FIG. 5, the single-row plunger row 641 is configured by the front end 740 of each plunger 64 being positioned on an arbitrary straight line 741.

As shown in the top view in FIG. 5, the plunger row 641 is located in one area R1 of the two areas R1 and R2. The two areas R1 and R2 are defined by the width of the plunger unit body 65 in the Y axis direction. The center line CC that is equally divided and extends along the X-axis direction is divided. Also, a straight line 741 extending in the X-axis direction passing through the tip 740 of each of the plungers 64 constituting the plunger row 641 is located in the region R1.

In addition, the single plunger row 641 or the straight line 741 may also be located in the other area R2 of the two regions R1 and the region R2 separated by the center line C-C of the plunger unit body 65. In addition, the structure in which the single-row plunger row 641 or the straight line 741 is located in either the region R1 or the region R2 is in demand due to various reasons such as low-volume production of multiple varieties.

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

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

5, the transmission drive mechanism 60 includes a first detector 66a between the first transmission drive shaft 63a and the plunger unit support plate 62, the second transmission drive shaft 63b, and the plunger unit support plate 62. The second detector 66b in between, and the third detector 66c between the third transmission drive shaft 63c and the plunger unit support plate 62.

The transmission drive mechanism 60 is configured to raise and lower the plunger unit main body 65 by including a first transmission drive shaft 63a, a second transmission drive shaft 63b, and a third transmission drive shaft 63c including, for example, a ball screw. 641 lift.

The plunger row 641 of the transmission drive mechanism 60 is configured to be able to transfer the resin arranged above the plunger row 641 to the molding die by the plunger row 641 ascending. The force applied by the transmission drive mechanism 60 in order to raise the plunger row 641 is the transmission 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 detection value related to the transmission output of the plunger row 641.

FIG. 6 shows a schematic side view of another example of the transmission drive mechanism 60 used in the resin molding apparatus of the embodiment. The transmission drive mechanism 60 shown in FIG. 6 is characterized by including multiple rows of plunger rows. In this way, the resin molding apparatus of the embodiment is configured such that the transmission drive mechanism 60 including a single row of plunger rows and the transmission drive mechanism 60 including multiple rows of plunger rows can be replaced and used. That is, the resin molding apparatus of the embodiment is configured to be applicable to any case where the number of plunger rows is single or multiple.

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

FIG. 7 shows a schematic plan view of the transmission drive mechanism 60 of the embodiment. FIG. 7 is a schematic plan view of the transmission drive mechanism 60 shown in FIG. 6 when viewed from the front ends 740a and 740b of the plunger 64a and the plunger 64b.

As shown in the top view in FIG. 7, the transmission drive mechanism 60 includes a plurality of plunger rows 643. The multi-column plunger array 643 is configured by the single-column plunger array 641 and the single-column plunger array 642 being spaced apart from each other in the Y-axis direction. The single-row plunger row 641 includes a plurality of plungers 64a, and the single-row plunger row 642 includes a plurality of plungers 64b. The single-row plunger row 641 and the single-row plunger row 642 respectively extend in the X-axis direction.

As shown in the top view in FIG. 7, the single-row plunger row 641 is located in two regions R1 and one region R2 of the region R2 separated by the center line CC of the plunger unit body 65, and the single-row plunger row 642 is located in the other region R2. . Also, a straight line 741a extending in the X-axis direction passing through the respective front ends 740a of the plurality of plungers 64a constituting the single row plunger row 641 is located in the region R1, and passing through the respective front ends of the plurality of plungers 64b constituting the single row plunger row 642 740b and a straight line 741b extending in the X-axis direction is located in the region R2.

Of course, the structure of the multi-row plunger rows 643 is not limited to the structure shown in the plan view in FIG. 7, and the multi-row plunger rows 643 may be configured by, for example, three or more single-row plunger rows arranged at intervals in the Y-axis direction.

Hereinafter, referring to FIGS. 8 to 18, a method of manufacturing a resin molded product of the embodiment, which is an example of a method of manufacturing a resin molded product using the resin molding apparatus of the embodiment, will be described. FIG. 8 shows a flowchart of a method of manufacturing a resin molded product according to an embodiment. As shown in FIG. 8, the method of manufacturing a resin molded product of the embodiment includes a step of determining a correction value (S10), a step of setting a molded object (S20), a step of clamping (S30), and a step of performing resin molding ( S40), and the step of mold opening (S50). Hereinafter, each step will be described in more detail.

As shown in FIG. 8, the manufacturing method of the resin molded article of embodiment starts from the step (S10) of determining a correction value. The step (S10) of determining the correction value can be performed as follows, for example. First, the plunger unit 61 of the transmission 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. 9. The verification jig 900 includes a virtual plunger unit body 65c and a virtual plunger 64c on the virtual plunger unit body 65c. Furthermore, the second mold 20 is removed from the resin molding apparatus of the embodiment shown in FIG. 3.

Next, in the resin molding apparatus of the embodiment shown in FIG. 3, instead of the transmission drive mechanism 60, the verification jig 900 shown in FIG. 9 is installed. Next, as shown in FIG. 9, a reference detector 800 such as an externally calibrated force sensor is provided on the second board 42. Then, the first transmission drive shaft 63a, the second transmission drive shaft 63b, and the third transmission drive shaft 63c are driven by, for example, a ball screw, and the verification jig 900 is raised. Thereby, the virtual 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 virtual plunger 64c. In addition, the measured value of the force is also detected by the first detector 66a, the second detector 66b, and the third detector 66c at the same time. In addition, the reference detector 800 has an amplifier built in, and the measured value output from the reference detector 800 becomes a value amplified by the amplifier.

Here, the reference detector 800 is externally calibrated, so the measured value of the force detected by the reference detector 800 is higher than the value detected by the first detector 66a, the second detector 66b, and the third detector 66c. The measured value of force is a more accurate 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 detected value obtained by the first detector 66a, the second detector 66b, and the third detector 66c is performed. Correction. In the resin molding apparatus of the embodiment, by using the correction value, it is possible to detect a more accurate value of the transmission output of the plunger row. As the correction value, a value corresponding to each of the column numbers of the plunger rows is determined.

In addition, in the case of using, for example, the single-row plunger row 641 shown in FIG. 5, in the plan view of FIG. 5, the reference detector 800 performs the following steps: a straight line 741 extending in the X-axis direction is placed on the column The midpoint 751 of the line segment cut by the plug unit body 65 determines the correction value. Furthermore, in the case of using the multiple plunger rows 643 shown in FIG. 7, in the plan view of FIG. 7, the reference detector 800 performs the following steps: setting the center line CC extending in the X-axis direction at The midpoint 752 of the line segment cut by the plunger unit body 65 determines the correction value.

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

In the step of determining the correction 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 a step of determining a correction value. Thereby, the control unit 68 outputs a command to drive the transmission drive shafts (the first transmission drive shaft 63a, the second transmission drive shaft 63b, and the third transmission drive shaft 63c). The transmission drive shaft receives an instruction from the control unit 68 to raise the verification jig 900.

The detector 66 (the first detector 66a, the second detector 66b, and the third detector 66c) performs detection while measuring the force applied to the virtual plunger 64c by the reference detector 800. Next, the detection values of the first detector 66a, the second detector 66b, and the third detector 66c are amplified by the amplifier 69 and output to the control unit 68.

Then, using the value of the force output from the reference detector 800 as a reference, the correction value is determined using the values output from the first detector 66a, the second detector 66b, and the third detector 66c via the amplifier. The determination of the correction value can be performed by the control unit 68. The control unit 68 includes a memory unit. The memory unit of the control unit 68 stores correction values corresponding to the number of plunger rows when the plunger rows are in a single row and when the plunger rows are in multiple rows (two or more rows). The control unit 68 may include, for example, a programmable logic controller (Programmable Logic Controller, PLC) or a human machine interface (Human Machine Interface, HMI) in addition to the memory unit.

Next, as shown in FIG. 8, after the step of determining the correction value (S10 ), the step of setting the molded object (S20) is performed. The step (S20) of setting the molded object can be performed as follows, for example. First, as shown in the schematic partial cross-sectional view of FIG. 11, the molded object 1 is placed between the first mold 10 and the second mold 20. In the example shown in FIG. 11, the molded object 1 is provided in the recess 21 of the second mold 20. As the molded object 1, 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 mold 20 used in the embodiment. As shown in FIG. 12, the second recess 21 of the second mold 20 is provided only on one side of the barrel 22 that also serves as a passage through which the plunger 64 moves. Furthermore, in the example shown in FIG. 12, the shape of the second recess 21 is rectangular, and the shape of the barrel 22 is circular, but it is not limited to these shapes.

Next, a step of mold clamping (S30) is performed. The step (S30) of mold clamping can be performed as follows, for example. First, it can be performed in the following manner: the mold clamping mechanism 600 raises the movable platform 300 and moves the second mold 20 relative to the fixed first mold 10, as shown in the schematic partial cross-sectional view of FIG. The first mold 10 and the second mold 20. In addition, the clamping of the first mold 10 and the second mold 20 can also be performed by moving the first mold 10 relative to the fixed second mold 20, or by making the first mold 10 and the second mold 20 two The person moves to proceed.

Next, a step of resin molding (S40) is performed. The step (S40) of resin molding can be performed as follows, for example. First, the transmission drive mechanism 60 shown in FIG. 4 raises the plunger unit 61 via the plunger unit support plate 62. Thereby, the plunger 64 rises, and as shown in the schematic partial cross-sectional view of FIG. 14, the resin supplied in the cylinder 22 is extruded to the outside of the cylinder 22.

Next, the resin extruded to the outside of the cylinder 22 is melted and accumulated in the stagnant portion 12. Next, the molten resin is transferred into the cavity 90 including the recess 11 of the first mold 10 and the recess 21 of the second mold 20. Then, the molded object 1 is sealed or the like by curing the resin, thereby performing resin molding of the molded object 1.

15 and 16 show schematic enlarged partial cross-sectional views 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, after the step (S20) of setting the object to be molded and before the step (S30) of clamping the mold, the solid resin 70a is placed in the cylinder 22, and the plunger 64 is located below the solid resin 70a.

In the subsequent step (S40) of resin molding of the molded object 1, as shown in FIG. 16, the plunger 64 extrudes the solid resin 70a in the cylinder 22 toward the stagnant portion 12 of the first die 10, and the solid resin 70a is solid The resin 70a is melted by a hot plate (not shown) of the first mold 10, and the molten resin 70 is accumulated in the stagnant portion 12. Then, the molten resin 70 passes through the resin passage 14 due to the pressure generated by the movement of the plunger 64 and is transferred to the molded object 1 in the cavity 90. Then, the molten resin 70 is solidified, and the resin molding of the molded object 1 is completed.

In addition, in the foregoing, the resin molding apparatus of the embodiment uses the transmission drive mechanism 60 having a single row plunger row 641 including a plurality of plungers 64 shown in FIG. 5, and the method of manufacturing a resin molded product of the embodiment is performed. Although the description has been given, the resin molding apparatus of the embodiment may use the second mold 20 as shown in the schematic plan view of FIG. 17, instead of the transmission having multiple plunger rows as shown in FIGS. 6 and 7 The drive mechanism 60 produces a resin molded product.

The control unit 68 is configured to control the transmission output of the plunger row. FIG. 18 is a flowchart showing an example of the operation of the control unit 68 of the resin molding apparatus according to the embodiment to control the transmission output of the plunger row. The control unit 68 first obtains operating conditions from the input/output unit 67. Here, the operating conditions include the number of plunger rows and the transmission output value (setting value of the transmission output) set corresponding to the number of the plunger rows.

Next, the control unit 68 outputs a command value (correction value) to the amplifier 69 based on the operating conditions. The control unit 68 outputs the correction value memorized in the storage unit of the control unit 68 based on the number of plunger rows. That is, in the case of using the transmission drive mechanism 60 in which the number of columns of the plunger rows is single, the control unit 68 outputs the correction value when the number of columns of the plunger rows is single. When the transmission drive mechanism 60 having a single plunger row is replaced with a transmission drive mechanism 60 having a plurality of plunger rows, the control unit 68 switches to correspond to the number of plunger rows. The correction value is output to the amplifier 69.

Next, the control unit 68 outputs the command value (the set value of the transmission output) to the transmission drive mechanism 60 based on the operating conditions. The control unit 68 outputs the transmission output setting value memorized by the storage unit of the control unit 68 based on the number of plunger rows. For example, when the number of columns of the plunger row is single, the control unit 68 outputs the set value of the transmission output when the number of columns of the plunger row is single. In addition, for example, when the number of columns of the plunger rows is plural, the control unit 68 outputs the setting value of the transmission output corresponding to the number of columns of the plunger rows.

Next, the control unit 68 confirms whether the transmission output of the plunger row of the transmission drive mechanism 60 has reached the set value of the transmission output. The control unit 68 obtains the transmission output value of the plunger row based on the detection performed by the detector 66 (the first detector 66 a, the second detector 66 b, and the third detector 66 c) through the amplifier 69. Here, the transmission output value from the amplifier 69 is a value obtained by correcting the transmission output value of the plunger train based on the detection performed by the detector 66 based on the correction value. In addition, the control unit 68 determines whether or not the acquired delivery output value has reached the set value of the delivery output based on the comparison of these values. In addition, the control unit 68 or the detector 66 (the first detector 66a, the second detector 66b, and the third detector 66c) may be used to perform correction when generating the delivery output. Furthermore, a correction unit may be provided between the control unit 68 and the amplifier 69, and the correction unit may be used to perform correction when generating the transmission output.

When the control unit 68 determines that the corrected value of the transmission output of the plunger row has reached the set value of the transmission output, the control unit 68 does not output a command for changing the transmission output of the plunger row to the transmission drive mechanism 60. That is, the control unit 68 maintains the transmission output value at a constant value to stop the ascending operation of the plunger row.

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

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

The left column of Table 2 and Table 3 shows the transmission output value of the plunger row which is actually applied to the verification jig 900 shown in FIG. 9 instead of the transmission drive mechanism 60 and detected by the reference detector. Furthermore, the middle column of Table 2 and Table 3 shows that it is actually applied by the resin molding apparatus of the embodiment using the transmission drive mechanism 60 having two rows of plunger rows 643 shown in FIGS. 6 and 7 and is based on the detector. 66 (the first detector 66a, the second detector 66b, and the third detector 66c) the transmission output value of the plunger row. The right column of Table 2 and Table 3 shows the difference of these output values.

The numerical value in the column of "reference detector output value [kN]" in Tables 1 to 3 represents the transmission output value of the plunger row actually applied by the reference detector 800, and the column of "detector output value [kN]" The numerical value of represents the transmission output value of the plunger row based on the detection value actually detected by the detector 66 (the first detector 66a, the second detector 66b, and the third detector 66c) of the resin molding apparatus of the embodiment. In addition, the values in the "difference [kN]" column of Tables 1 to 3 indicate the difference between the value in the "detector output value [kN]" column and the value in the "reference detector output value [kN]" column difference. When the numerical value in the "difference [kN]" column of Tables 1 to 3 is small, it means that the actual transmission output value of the plunger row can be grasped more accurately.

In addition, the "detector output value [kN]" in Table 1 and Table 2 indicates the value after correction by the correction value when the number of columns of the plunger row is single. In contrast to this, the "detector output value [kN] in Table 3 The numerical value in the column of "output value [kN]" indicates the output value calculated based on the correction value when the number of rows of the plunger row is two rows.

[Table 1] The output value of the reference detector [kN] The output value of the detector [kN] Poor [kN] 0.00 0.040 0.04 3.90 3.930 0.03 9.80 9.830 0.03 20.0 19.98 -0.02 29.4 29.41 0.01 39.2 39.17 -0.03 49.1 49.04 -0.06

[Table 2] The output value of the reference detector [kN] The output value of the detector [kN] Poor [kN] 0.00 0.040 0.04 3.90 3.910 0.01 9.80 9.710 -0.09 20.0 19.76 -0.24 30.1 29.74 -0.36 39.4 39.02 -0.38 49.2 48.73 -0.47 58.8 58.20 -0.60 69.3 68.63 -0.67

[table 3] The output value of the reference detector [kN] The output value of the detector [kN] Poor [kN] 0.00 0.040 0.04 4.10 4.120 0.02 9.80 9.760 -0.04 19.6 19.52 -0.08 29.4 29.31 -0.09 39.2 39.11 -0.09 49.2 49.07 -0.13 59.2 59.07 -0.13 68.5 68.34 -0.16 78.3 78.15 -0.15 88.2 88.02 -0.18 98.0 97.95 -0.05

As shown by the comparison of the values in the "Difference [kN]" column of Table 2 and the values in the "Difference [kN]" column of Table 3, it is confirmed that the transmission drive mechanism with two rows of plunger rows is used In this case, it is possible to more accurately grasp the actual transmission of the plunger train when the calculation is based on the correction value corresponding to the two plunger trains, compared to the calculation based on the correction value corresponding to the single plunger train. The output value.

In this way, in the resin molding apparatus of the embodiment, the control unit is configured to switch the correction value for correcting the transmission output value detected by the detector according to the number of plunger rows, so that the transmission of the plunger rows can be controlled more accurately. Output.

As above, the embodiment has been described, but it is also planned from the beginning to appropriately combine the respective structures of the embodiment.

Although the embodiment of the present invention has been described, it should be considered that the embodiment disclosed this time is illustrative and not restrictive in all respects. The scope of the present invention is expressed by the scope of the patent application for invention, and it is meant to include all changes within the meaning and scope equivalent to the scope of the patent application for invention.

1: molding object 10: The first mold 11: The first recess 12: Stagnation Department 13: The first mold plate 14: Resin passage 20: The second mold 21: The second recess 22: Barrel 23: The second mold plate 30: The first mold holder 31: The first board 32: The first auxiliary block 40: The second mold holder 41: second auxiliary block 42: second board 50: The second mold holder mounting block 60: Transmission drive mechanism 61: Plunger unit 62: Plunger unit support plate 63a: The first transmission drive shaft 63b: second transmission drive shaft 63c: third transmission drive shaft 64, 64a, 64b: plunger 64c: virtual plunger 65: Plunger unit body 65c: Virtual plunger unit body 66: Detector 66a: first detector 66b: second detector 66c: third detector 67: Input and Output Department 68: Control Department 69: Amplifier 70, 70a: Resin 90: Mould cavity 200: The first platform 300: movable platform 400: second platform 500: connecting rod 600: Clamping mechanism 631a, 631b, 631c: center 632, 741, 741a, 741b: straight 641, 642, 643: plunger column 740, 740a, 740b: front end 751, 752: midpoint 800: Benchmark detector 900: Verification fixture 1000: Mould Mechanism Department 2000: Loader 3000: Loader A: Molded module B: Load module C: Load out the module R1, R2: area S10～S50: steps C-C: Centerline

Fig. 1 is a schematic plan view of an apparatus for manufacturing a resin molded article according to an embodiment. Fig. 2 is a schematic perspective view of the resin molding apparatus of the embodiment. Fig. 3 is a schematic partial cross-sectional view of the resin molding apparatus of the embodiment. 4 is a schematic side view of an example of a transmission drive mechanism used in the resin molding apparatus of the embodiment. Fig. 5 is a schematic plan view of the transmission drive mechanism shown in Fig. 4. Fig. 6 is a schematic side view of another example of a transmission drive mechanism used in the resin molding apparatus of the embodiment. Fig. 7 is a schematic plan view of the transmission drive mechanism shown in Fig. 6. Fig. 8 is a flowchart of a method of manufacturing a resin molded product according to an embodiment. Fig. 9 is a schematic partial cross-sectional view illustrating an example of a step of determining a correction value. Fig. 10 is a block diagram of the main part of the resin molding apparatus according to the embodiment. Fig. 11 is a schematic partial cross-sectional view illustrating an example of a step of setting a molded object. Fig. 12 is a schematic plan view of an example of a second mold used in the resin molding apparatus of the embodiment. Fig. 13 is a schematic partial cross-sectional view illustrating an example of a step of setting a molded object. Fig. 14 is a schematic partial cross-sectional view illustrating a mold clamping step of the method of manufacturing a resin molded article of the embodiment. 15 is a schematic enlarged partial cross-sectional view illustrating the transfer of the resin into the cavity by the movement of the plunger. 16 is a schematic enlarged partial cross-sectional view illustrating the transfer of the resin into the cavity by the movement of the plunger. Fig. 17 is a schematic plan view of another example of the second mold used in the resin molding apparatus of the embodiment. FIG. 18 is a flowchart of an example of an operation in which the control unit of the resin molding apparatus according to the embodiment controls the transmission output of the plunger row.

60: Transmission drive mechanism

66: Detector

67: Input and Output Department

68: Control Department

69: Amplifier

Claims (6)

A resin molding device includes: Forming mold The plunger row is configured to be able to transfer the forming mold to the resin; A detector configured to be able to detect a detection value related to the transmission output of the plunger row; and The control unit is configured to be able to control the transmission output, and The resin molding device is configured to be capable of adapting the number of columns of the plunger row to any one of a single or a plurality of rows, The control unit is configured to be able to switch a correction value for correcting the detection value detected by the detector to generate the transmission output based on the number of columns of the plunger column. The resin molding apparatus according to claim 1, further comprising: The amplifier is connected to the control unit and the detector. The resin molding apparatus according to claim 1, wherein The control unit includes a storage unit configured to store the correction value. The resin molding device according to any one of claim 1 to claim 3, further comprising: The transmission drive mechanism is configured to be able to raise and lower the plunger row. A method of 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, and includes: The step of placing a molded object in the molding die; The step of clamping the forming mold; A step of resin molding the molded object; and The step of opening the forming mold. The method of manufacturing a resin molded product according to claim 5, further including: The step of determining the correction value, The resin molding step includes the step of controlling the delivery output by the control unit using the correction value.

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