TWI781465B - 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 method for manufacturing resin molded product

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

For example, Japanese Patent Laid-Open No. 11-260844 (Patent Document 1) describes a semiconductor resin sealing device in which the force applied to a plunger is divided into injection resistance and sliding resistance and monitored (monitor ), to distinguish whether non-filling and void defects are caused by abnormal resin properties or abnormal equipment, and automatically control the equipment reliably.

In the semiconductor resin sealing device described in Patent Document 1, the injection resistance during molding and the threshold value (sliding threshold value) obtained by the load cell (load cell) at the lower part of the plunger when the plunger is raised by the device drive control unit are compared. A comparison is made to determine whether or not 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 the plunger row is single or plural to manufacture a resin molded product. However, when the same threshold is used regardless of whether the number of plunger rows is single or plural, appropriate transfer output may not be applied to the plunger.

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

According to the embodiment disclosed here, there is provided a method for manufacturing a resin molded product using the resin molding apparatus, comprising the steps of: setting an object to be molded in a molding mold; clamping the molding mold ; performing resin molding on the object to be formed; and opening the forming die.

According to the embodiments disclosed herein, it is possible to provide a resin molding device and a method of manufacturing a resin molded product, which can more accurately grasp the transfer output.

These and other objects, features, aspects, and advantages of the present invention will be apparent from the following detailed description related to the present invention to be understood in conjunction with the accompanying drawings.

Embodiments will be described below. In addition, in the drawings for describing the embodiments, the same reference numerals denote the same or corresponding parts.

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

The mold module A includes a mold mechanism unit 1000 configured to be able to resin mold an object to be molded, such as a semiconductor chip mounted on a lead frame, for example. The loading module B includes a loader 2000 configured to supply molding objects and resin to the molding module A. As shown in FIG. The unloading module C includes an unloader 3000 configured to be able to take out a resin molded product from the molding module A. The loader 2000 and the unloader 3000 are configured to be movable in directions indicated by arrows 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. Furthermore, the molding 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, for example.

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

Moreover, in the manufacturing apparatus of the resin molded article of embodiment shown in FIG. One master machine, in which the loading module B and the unloading module C are integrated, and one or more sub-machines including only the molding module A constitute a manufacturing device for resin molded products. In addition, one molding module A can also be understood as the manufacturing apparatus of the resin molded article of embodiment.

FIG. 2 shows a schematic perspective view of a resin molding apparatus according to an embodiment. The resin molding apparatus of the embodiment shown in FIG. 2 is arranged in the mold mechanism unit 1000 of the manufacturing apparatus of the resin molded article of the embodiment shown in FIG. 1 .

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

The movable platform 300 is located between the first platform 200 and the second platform 400 , and is configured to move relative to the first platform 200 along the link 500 between the first platform 200 and the second platform 400 .

The link 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 device of the embodiment shown in FIG. 2 includes: the first mold holder 30 installed on the first platform 200, the second mold holder mounting block 50 installed on the movable platform 300, and the second mold holder mounting block 50 installed on the second mold holder. The second mold holder 40 of the block 50 , the second mold holder mounts the transfer drive mechanism 60 within the 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 mounted on the movable platform 300 via the second mold holder mounting block 50 .

FIG. 3 shows a schematic partial cross-sectional view of a resin molding device according to an embodiment. As shown in FIG. 3 , the resin molding apparatus of the embodiment includes: a first mold 10 as a molding die held by a first mold holder 30 ; and a second mold 20 as a molding die held by a second mold holder 40 .

The clamping mechanism 600 is configured to clamp the first mold 10 and the second mold 20 by moving the movable platform 300 relative to the first platform 200 to press 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 attachable to the first platform 200 , and includes a thermal insulation panel and a heating panel in order from the first platform 200 side. The first auxiliary block 32 is configured 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 attachable to the second mold holder mounting block 50 , and includes a heat shield plate and a heating plate in order from the second mold holder mounting block 50 side. The second auxiliary block 41 is configured to fix the second mold 20 to the second plate 42 .

The first mold 10 includes a first concave portion 11 , a stagnation portion 12 and a first mold plate 13 . The first concave portion 11 may have a shape corresponding to the resin-molded shape of the object to be molded. The stagnant part 12 is used as a resin accumulation part before transferring the resin to a molding 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 concave portion 21 , a pot 22 and a second mold plate 23 . The second concave portion 21 may have a shape corresponding to the resin-molded shape of the object to be molded. The cylinder 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 63 a and a first detector 66 a on the first transmission drive shaft 63 a, and the first detector 66 a is a load cell or the like. Moreover, 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, and the third detector 66c is, for example, a load cell.

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 main body 65 . The plunger 64 is a rod-shaped member linearly extending 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 viewed from the front end 740 of the plunger 64 .

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

As shown in a top view in FIG. 5 , the plunger column 641 is located in one of the two regions R1 and R2, which are two regions with a width of two in the Y-axis direction of the plunger unit body 65. It is divided by a center line C-C that is equally divided and extends along the X-axis direction. Further, a straight line 741 extending in the X-axis direction passing through each front end 740 of the plungers 64 constituting the plunger row 641 is located in the region R1.

In addition, a single plunger row 641 or straight line 741 can also be located in another region R2 of the two regions R1 and 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 required for various reasons such as the production of many varieties and small quantities.

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

As shown in 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 other than the site.

And, as shown in plan view in FIG. The second detector 66b between them, 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 move the plunger unit body 65 up and down through the first transmission drive shaft 63a, the second transmission drive shaft 63b, and the third transmission drive shaft 63c including, for example, a ball screw, that is, the plunger row can be moved up and down. 641 lift.

The plunger row 641 of the transmission drive mechanism 60 is configured so that the resin arranged above the plunger row 641 can be transferred to the molding die as the plunger row 641 rises. The force applied by the drive mechanism 60 to raise the plunger row 641 is the transmission output of the plunger row 641 . The first detector 66 a , the second detector 66 b , and the third detector 66 c are configured to detect detection values related to the transfer 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 a plurality of plunger rows. In this way, the resin molding apparatus of the embodiment is configured so that the transmission drive mechanism 60 including a single plunger row and the transmission drive mechanism 60 including a plurality of plunger rows can be used interchangeably. 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 plural.

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 the molding die. The plunger 64a and the plunger 64b are also rod-shaped members linearly extending 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 a transmission drive mechanism 60 according to the embodiment. FIG. 7 is a schematic plan view of the transmission drive mechanism 60 shown in FIG. 6 viewed from the front ends 740a and 740b of the plunger 64a and the plunger 64b.

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

As shown in the top view in FIG. 7 , the single-row plunger row 641 is located in one of the two regions R1 and R2 separated by the centerline C-C 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 each of the 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 each of the front ends of the plurality of plungers 64b constituting the single-row plunger row 642 . 740b and a straight line 741b extending along the X-axis direction are located in the region R2.

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

Hereinafter, a method of manufacturing a resin molded product according to an embodiment as an example of a method of manufacturing a resin molded product using the resin molding apparatus according to the embodiment will be described with reference to FIGS. 8 to 18 . FIG. 8 shows a flowchart of a method of manufacturing a resin molded article according to the embodiment. As shown in FIG. 8 , the method of manufacturing a resin molded product according to the embodiment includes: a step of determining a correction value (S10), a step of setting a molding object (S20), a step of clamping a mold (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 the embodiment starts from the step of determining the correction value ( S10 ). The step of determining the correction value ( S10 ) can be performed, for example, as follows. 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 dummy plunger unit body 65c, and a dummy plunger 64c on the dummy 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 , a verification jig 900 shown in FIG. 9 is provided instead of the transmission drive mechanism 60 . Next, as shown in FIG. 9 , a reference detector 800 such as an externally calibrated load cell is provided on the second plate 42 . Then, the first transmission drive shaft 63 a , the second transmission drive shaft 63 b , and the third transmission drive shaft 63 c are driven by, for example, a ball screw or the like to raise the verification jig 900 . Thereby, the virtual plunger 64c of the verification jig 900 applies force to the reference detector 800, and the reference detector 800 detects the measured value of the force applied to the virtual plunger 64c. And simultaneously, the measurement value of force is also detected by the 1st detector 66a, the 2nd detector 66b, and the 3rd detector 66c. In addition, the reference detector 800 includes an amplifier, and the measurement value output from the reference detector 800 becomes a value amplified by the amplifier.

Here, the reference detector 800 is calibrated externally, so that the measured value of the force detected by the reference detector 800 is higher than that based on the detection values detected by the first detector 66a, the second detector 66b, and the third detector 66c. A more accurate value for the measured value of force. In this way, the measured value of force based on the detection value obtained by the first detector 66a, the second detector 66b, and the third detector 66c is performed on the basis of the measured value of force detected by the reference detector 800. Correction. In the resin molding apparatus according to the embodiment, by using the correction value, a more accurate value of the transmission output of the plunger row can be detected. As the correction value, a value corresponding to each number of 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. 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 multi-row plunger row 643 shown in FIG. 7 , in the plan view of FIG. 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 main parts of the resin molding apparatus according to the embodiment. As shown in FIG. 10 , the resin molding apparatus of the embodiment includes an input and output unit 67 such as a touch screen, a control unit 68 connected to the input and output unit 67 , a transmission drive mechanism 60 connected to the control unit 68 , and a control unit 68 connected to the control unit 68 . Amplifier 69 such as an amplifier, and detector 66 (first detector 66 a , second detector 66 b , and third detector 66 c ) connected to 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 the procedure of determining the correction value. Thereby, the control part 68 outputs a command to drive the transmission drive shaft (the 1st transmission drive shaft 63a, the 2nd transmission drive shaft 63b, and the 3rd transmission drive shaft 63c). The transmission drive shaft raises the testing jig 900 in response to an instruction from the control unit 68 .

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

Then, the correction value is determined using the values output from the first detector 66 a , the second detector 66 b , and the third detector 66 c via amplifiers with reference to the force value output from the reference detector 800 . The correction value can be determined 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 there is a single row of plunger rows and when there are multiple rows (two or more rows) of plunger 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 a memory unit.

Next, as shown in FIG. 8 , after the step of determining the correction value ( S10 ), the step of setting the object to be formed ( S20 ) is performed. The step ( S20 ) of setting the object to be formed 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 formed is set between the first mold 10 and the second mold 20 . In the example shown in FIG. 11 , the object to be formed 1 is set in the concave portion 21 of the second die 20 . As the molding object 1, for example, a semiconductor chip or the like mounted on a lead frame 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 concave portion 21 of the second mold 20 is provided only on one side of the cylinder 22 which also serves as a passage for the plunger 64 to move. Moreover, in the example shown in FIG. 12, the shape of the 2nd recessed part 21 is rectangular, and the shape of the cylinder 22 is circular, However, It is not limited to these shapes.

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

Next, a resin molding step ( S40 ) is performed. The resin molding step ( S40 ) can be performed, for example, as follows. 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 melted resin is transferred into the cavity 90 including the concave portion 11 of the first mold 10 and the concave portion 21 of the second mold 20 . Then, resin molding of the object to be molded 1 is performed by sealing the object to be molded 1 by curing the resin or the like.

15 and 16 are schematic enlarged partial cross-sectional views illustrating transfer of the resin 70 into the cavity 90 by movement of the plunger 64 in the resin molding apparatus according to the embodiment. As shown in FIG. 15 , after the step of setting the object to be molded ( S20 ) and before the step of clamping the mold ( S30 ), solid resin 70 a is set in cylinder 22 , and plunger 64 is positioned below solid resin 70 a.

In the subsequent step (S40) of resin molding the object to be molded 1, as shown in FIG. The resin 70 a in the first mold 10 is melted by a heating plate (not shown) of the first mold 10 , and the melted resin 70 is accumulated in the stagnation portion 12 . Then, the molten resin 70 is transferred to the molding object 1 in the cavity 90 through the resin passage 14 by the pressure generated by the movement of the plunger 64 . Then, the molten resin 70 is solidified, and the resin molding of the object 1 to be molded is completed.

In addition, in the above, the method of manufacturing the resin molded article of the embodiment is carried out in the case where the resin molding apparatus of the embodiment uses the transmission drive mechanism 60 having a single row of plunger rows 641 including a plurality of plungers 64 shown in FIG. 5 . For the sake of explanation, the resin molding apparatus of the embodiment may also use the second mold 20 as shown in the schematic plan view of FIG. The driving mechanism 60 is used to manufacture resin molded products.

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 acquires the operating conditions from the input and output unit 67 . Here, the operating conditions include the number of plunger rows and a transfer output value (set value of transfer output) set corresponding to the number of 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 stored in the storage unit of the control unit 68 based on the number of plunger rows. That is, the control unit 68 outputs a correction value when the number of plunger rows is single when using the transmission drive mechanism 60 with a single number of plunger rows. When the transmission drive mechanism 60 with a single number of plunger rows is replaced with a transmission drive mechanism 60 with a plurality of plunger rows, the control unit 68 is switched to correspond to the number of plunger rows. The corrected value is output to the amplifier 69.

Next, the control unit 68 outputs a command value (set value of transmission output) to the transmission drive mechanism 60 based on the operating conditions. The control unit 68 outputs the set value of the transfer output stored in the storage unit of the control unit 68 according to the number of plunger rows. For example, when the number of plunger rows is single, the control unit 68 outputs the setting value of the transmission output when the number of plunger rows is single. Furthermore, for example, when the number of plunger rows is plural, the control unit 68 outputs a setting value of the transmission output corresponding to the number of the plunger rows.

Next, the control unit 68 checks whether or not 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 acquires the transfer output value of the plunger row based on the detection 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 transfer output value from the amplifier 69 is a value obtained by correcting the transfer output value of the plunger row based on the detection by the detector 66 based on the correction value. In addition, the control unit 68 judges whether or not the acquired transfer output value has reached the set value of the transfer output based on the comparison of these values. In addition, the correction at the time of generation|generation of a transfer output may be performed by the control part 68 or the detector 66 (1st detector 66a, the 2nd detector 66b, and the 3rd detector 66c). Furthermore, a correction unit may be provided between the control unit 68 and the amplifier 69, and correction at the time of generation of the transfer output may be performed by the correction unit.

When the control unit 68 determines that the corrected value of the transfer output of the plunger row has reached the set value of the transfer output, it does not output a command to change the transfer output of the plunger row to the transfer drive mechanism 60 . That is, the control unit 68 maintains the transmission output value at a constant value, and stops the raising operation of the plunger row.

On the other hand, when it is determined that the corrected value of the transmission output has not reached the set value of the transmission output, the control unit 68 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 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 reaches the set value of the transfer output.

In the left column of Table 1, the transmission output value of the plunger row detected by the reference detector is shown by actually applied to the verification jig 900 shown in FIG. 9 instead of the transmission drive mechanism 60 . Furthermore, in the middle column of Table 1, it is shown that the resin molding device of the embodiment using the transmission drive mechanism 60 having the single-row plunger row 641 shown in FIG. 4 and FIG. Detector 66a, second detector 66b, and third detector 66c) transfer output values of the plunger columns. The difference between these output values is shown in the right column of Table 1.

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

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

In addition, the "detector output value [kN]" in Table 1 and Table 2 indicates the value corrected by the correction value in the case where the number of plunger rows is single, while 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 plunger rows is two.

[Table 1] Output value of reference detector [kN] Detector output value [kN] Difference [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] Output value of reference detector [kN] Detector output value [kN] Difference [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] Output value of reference detector [kN] Detector output value [kN] Difference [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 numerical values in the column of "difference [kN]" in Table 2 and the numerical value in the column of "difference [kN]" in Table 3, it was confirmed that in the case of using a transmission drive mechanism having two rows of plunger rows, In this case, the transmission of the actual plunger row can be grasped more accurately when the calculation is performed based on the correction value corresponding to the two-row plunger row than when the calculation is performed based on the correction value corresponding to the single-row plunger row. 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 transfer output value detected by the detector according to the number of plunger rows, so that the transfer of the plunger row can be controlled more accurately. output.

As mentioned above, although embodiment was demonstrated, appropriate combination of each structure of the said embodiment is also planned from the beginning.

Although the embodiment of the present invention has been described, it should be understood that the embodiment disclosed this time is illustrative and not restrictive in any respect. The scope of the present invention is indicated by the scope of claims for invention, and it is intended that all modifications within the meaning and scope equivalent to the claims for invention are included.

1: Forming object 10: The first mold 11: The first recess 12: Stuck material department 13: The first mold plate 14: Resin access 20: Second mold 21: Second recess 22: Barrel 23: Second mold plate 30: First Die Holder 31: First Board 32: The first auxiliary block 40: Second mold holder 41: Second auxiliary block 42: second board 50:Second mold holder mounting block 60: Transfer drive mechanism 61:Plunger unit 62:Plunger unit support plate 63a: First transmission drive shaft 63b: Second transmission drive shaft 63c: The 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: The third detector 67: Input and output section 68: Control Department 69: Amplifier 70, 70a: resin 90: mold 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 line 641, 642, 643: plunger row 740, 740a, 740b: front end 751, 752: Midpoint 800: Benchmark detector 900: Verification fixture 1000: Molding Mechanism Department 2000: Loader 3000: loader A: Molded module B: load module C: load out module R1, R2: area S10～S50: Steps C-C: Centerline

FIG. 1 is a schematic plan view of a manufacturing apparatus of a resin molded article according to an embodiment. Fig. 2 is a schematic perspective view of a resin molding device according to an embodiment. Fig. 3 is a schematic partial cross-sectional view of a resin molding device according to an 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 . 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 article according to an embodiment. FIG. 9 is a schematic partial cross-sectional view illustrating an example of a procedure for determining a correction value. Fig. 10 is a block diagram of a 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 an object to be formed. Fig. 12 is a schematic plan view of an example of a second die 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 an object to be formed. 14 is a schematic partial cross-sectional view illustrating a mold clamping step of the method of manufacturing a resin molded article according to the embodiment. Fig. 15 is a schematic enlarged partial cross-sectional view illustrating the transfer of the resin into the cavity by the movement of the plunger. Fig. 16 is a schematic enlarged partial sectional view illustrating the transfer of 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. 18 is a flowchart of an example of the operation of the control unit of the resin molding apparatus according to the embodiment to control the transmission output of the plunger row.

60: Transfer drive mechanism

66: detector

67: Input and output section

68: Control Department

69: Amplifier

Claims (6)

A resin molding device, comprising: a molding die; a plunger row configured to transfer resin to the molding die, and a plurality of plungers arranged in a row; a detector configured to detect contact between the plunger row and the plunger row. a detection value related to a transmission output; and a control unit configured to be able to control the transmission output, and the resin molding device is configured to be able to apply the number of the plunger rows to either single or plural, so The control unit is configured to be able to switch the correction value for correcting the detection value detected by the detector to use the correction value based on the number of the plunger rows determined before resin molding. To generate the transfer output, the resin molding device is configured to be used interchangeably with a single row of the plunger rows and a plurality of rows of the plunger rows. 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, wherein the control unit includes a storage unit configured to store the correction value. The resin molding apparatus according to any one of claim 1 to claim 3, further comprising: a transmission drive mechanism configured to be capable of raising and lowering the plunger row. A method of manufacturing a resin molded article, for manufacturing a resin molded article using the resin molding apparatus according to any one of claims 1 to 4, and including a step of determining the correction value, when determining the correction value After the step of setting the value, it includes: the step of setting the forming object in the forming mold; the step of locking the forming mold; the step of resin molding the forming object; and the step of opening the forming mold. step. The method of manufacturing a resin molded article according to claim 5, wherein the resin molding step includes a step in which the control unit controls the transfer output using the correction value.

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