JP2020082445A - Transfer driving mechanism, resin molding device and method for manufacturing resin molding - Google Patents

Abstract

To provide a transfer driving mechanism which enables stable ascending/descending operation, a resin molding device and a method for manufacturing a resin molding.SOLUTION: A transfer driving mechanism (60) includes a transfer driving shaft (63), and a plunger unit (65) on the transfer driving shaft (63). The transfer driving shaft (63) includes at least a first transfer driving shaft (63a), a second transfer driving shaft (63b), and a third transfer driving shaft (63c). In plan view from a tip (740) of the plunger (64), a center (631c) of the third transfer driving shaft (63c) is positioned in a portion other than a straight line (632) passing through a center (631a) of the first transfer driving shaft (63a) and a center (631b) of the second transfer driving shaft (63b).SELECTED DRAWING: Figure 5

Description

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

For example, Patent Document 1 describes a transfer molding machine including four plungers on a lift table connected to a rod of a drive cylinder. In the transfer molding machine of Patent Document 1, after the upper die and the lower die are clamped, the drive cylinder is driven to push up the plunger. As a result, the piston portion of the plunger slides in the pot to push out the molten resin, and the resin is injected into the cavity formed between the upper mold and the lower mold.

JP-A-8-156012

The transfer molding machine described in Patent Document 1 has a configuration in which two driving cylinders are linearly arranged with respect to four plungers linearly arranged on an elevating table. Therefore, in the transfer molding machine described in Patent Document 1, it may be impossible to stably move up and down the lift table by the driving cylinder.

According to the embodiments disclosed herein, a transfer drive shaft and a plunger unit on the transfer drive shaft are provided, and the transfer drive shaft includes at least a first transfer drive shaft, a second transfer drive shaft, and A third transfer drive shaft is provided, the plunger unit is provided with a plurality of plungers, and a plunger unit main body, and the plurality of plungers constitutes a plunger row extending in the first direction. Is located outside the plunger unit body, and the first transfer drive shaft, the third transfer drive shaft, and the second transfer drive shaft are located in this order in the first direction. In the plan view seen from the tip of the plunger, the center of the third transfer drive shaft is located at a position other than a straight line passing through the center of the first transfer drive shaft and the center of the second transfer drive shaft. A transfer drive mechanism can be provided.

According to the embodiment disclosed herein, the transfer driving mechanism, the molding die, and the mold clamping mechanism are provided, and the molding die is configured such that the resin can be transferred to the cavity of the molding die by the plunger of the transfer driving mechanism. Therefore, the mold clamping mechanism can provide the resin molding device configured to clamp the molding die.

According to the embodiment disclosed herein, a method of manufacturing a resin molded product using the above resin molding apparatus, comprising a step of installing a molding target in a molding die, and a step of clamping the molding die. It is possible to provide a method for manufacturing a resin molded product, which includes a step of resin-molding a molding target and a step of opening a mold.

According to the embodiments disclosed herein, it is possible to provide a transfer drive mechanism, a resin molding device, and a method for manufacturing a resin molded product, which enables stable lifting and lowering operations.

It is a schematic plan view of a manufacturing apparatus of a resin molded product. It is a typical perspective view of a resin molding device. It is a typical fragmentary sectional view of a resin molding device. 3 is a schematic side view of the transfer drive mechanism according to the first embodiment. FIG. 3 is a schematic plan view of a transfer drive mechanism according to the first embodiment. FIG. It is a flowchart of the manufacturing method of a resin molded product. It is a typical fragmentary sectional view illustrating an example of a process of installing a molding object between the 1st type and the 2nd type. It is a typical top view of an example of the 2nd type. It is a typical fragmentary sectional view illustrating an example of a process of mold-clamping a 1st type and a 2nd type. It is a typical fragmentary sectional view illustrating an example of the process of resin-molding a molding object. FIG. 7 is a schematic enlarged partial cross-sectional view illustrating the transfer of resin into the cavity by moving the plunger. FIG. 7 is a schematic enlarged partial cross-sectional view illustrating the transfer of resin into the cavity by moving the plunger. It is a typical side view of a transfer drive mechanism of a comparative example. FIG. 14 is a schematic plan view of a transfer driving mechanism of the comparative example shown in FIG. 13. It is a schematic plan view of another example of the second type. 7 is a schematic side view of a transfer drive mechanism according to the second embodiment. FIG. 7 is a schematic plan view of a transfer drive mechanism according to the second embodiment. FIG. FIG. 9 is a schematic plan view of a transfer drive mechanism according to the third embodiment. FIG. 9 is a schematic plan view of a transfer drive mechanism according to the fourth embodiment. FIG. 13 is a schematic plan view of a transfer drive mechanism of the fifth embodiment.

Hereinafter, embodiments will be described. In the drawings used for describing the embodiments, the same reference numerals represent the same or corresponding parts.

<Embodiment 1>
FIG. 1 shows a schematic plan view of an apparatus for manufacturing a resin molded product of the first embodiment. As shown in FIG. 1, the apparatus for manufacturing a resin molded product according to 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 unit 1000 configured to be capable of resin molding a molding target such as a semiconductor chip mounted on a lead frame. The in-loader module B includes an in-loader 2000 configured to be able to supply a molding target to the molding module A. The outloader module C includes an outloader 3000 configured so that a resin-shaped product can be taken out from the molding module A. The in-loader 2000 and the out-loader 3000 are configured to be movable in the directions indicated by the arrows in FIG.

The molding module A and the in-loader module B are detachably connected to each other by a connecting mechanism such as bolts and pins. The molding module A and the outloader module C are also detachably connected to each other by a connecting mechanism such as bolts and pins.

The apparatus for manufacturing a resin molded product according to the first 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 amount. The apparatus for manufacturing a resin molded product according to the first embodiment may include, for example, one molding module A or four molding modules A added. That is, the resin molded product manufacturing apparatus according to the first embodiment can be configured to increase or decrease the number of molding modules A.

Further, in the resin molded product manufacturing apparatus of the first embodiment shown in FIG. 1, the molding module A, the in-loader module B, and the out-loader module C are arranged in the order shown in FIG. An apparatus for manufacturing a resin molded product is configured by one master unit in which the molding module A, the in-loader module B, and the outloader module C are integrated, and one or more slave units including only the molding module A. May be. It should be noted that one molding module A can be regarded as a device for manufacturing a resin molded product according to the embodiment.

FIG. 2 shows a schematic perspective view of the resin molding apparatus of the first embodiment. The resin molding apparatus of the first embodiment shown in FIG. 2 is arranged in the molding mechanism section 1000 of the apparatus for manufacturing a resin molded product of the first embodiment shown in FIG.

As shown in FIG. 2, the resin molding apparatus according to the first embodiment includes a first platen 200, a second platen 400, a movable platen 300, and a tie bar 500. The second platen 400 faces away from the first platen 200.

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

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 according to the first embodiment shown in FIG. 2 includes a first die holder 30 attached to the first platen 200, a second die holder attachment block 50 attached to the movable platen 300, and a second die holder attachment. The second mold holder 40 mounted on the block 50, the transfer driving mechanism 60 in the second mold holder mounting block 50, and the mold clamping mechanism 600 between the movable platen 300 and the second platen 400 are provided. Here, the second die holder 40 is attached to the movable platen 300 via the second die holder attachment block 50.

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

The mold clamping mechanism 600 is capable of clamping 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. Is configured.

The first mold 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 includes a heat insulating plate and a heater plate in this order from the first platen 200 side. The first assist block 32 is configured to be able to fix the first die 10 under the first plate 31.

The second mold holder 40 includes a second assist 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 insulating plate and a heater plate in this order from the second mold holder mounting block 50 side. The second assist block 41 is configured to be able to fix the second die 20 on the second plate 42.

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

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

FIG. 4 is a schematic side view of the transfer driving mechanism 60 of the first embodiment, which is an example of the transfer driving mechanism used in the resin molding apparatus of the first embodiment. As shown in FIG. 4, the transfer drive mechanism 60 according to the first embodiment includes a transfer drive shaft 63, a plunger unit 61 on the transfer drive shaft 63, and a plunger unit support plate between the transfer drive shaft 63 and the plunger unit 61. And 62.

The plunger unit 61 includes a plurality of plungers 64 and a plunger unit body 65. Each of the plurality of plungers 64 is a rod-shaped member that linearly extends in the Z-axis direction, and each tip 740 of each of the plurality of plungers 64 is located outside the plunger unit main body 65, and each tip of each of the plurality of plungers 64. The other end (not shown) of 740 is located inside the plunger unit body 65. The plunger unit main body 65 is configured such that the plunger 64 can move up and down inside the plunger unit main body 65.

FIG. 5 shows a schematic plan view of the transfer drive mechanism 60 of the first embodiment. FIG. 5 is a schematic plan view of the transfer drive mechanism 60 shown in FIG. 4 when viewed from the tip of the plunger 64. As shown in the plan view of FIG. 5, the plurality of plungers 64 form a single-row plunger row 641 extending in the X-axis direction as the first direction. As shown in the plan view of FIG. 5, the single-row plunger row 641 is formed by arranging the tips 740 of the plurality of plungers on an arbitrary straight line 741.

As shown in the plan view of FIG. 5, the single-row plunger row 641 is defined by a center line C-C extending in the X-axis direction that bisects the width of the plunger unit body 65 in the Y-axis direction as the second direction. It is located in one of the two divided regions R1 and R2. Further, a straight line 741 extending in the X-axis direction passing through the respective tips 740a of the plurality of plungers 64a constituting the single-row plunger row 641 is located in the region R1.

The single-row plunger row 641 or the straight line 741 may be located in the other area R2 of the two areas R1 and R2 separated by the center line C-C of the plunger unit main body 65. It should be noted that there is a demand for a configuration in which the single-row plunger row 641 or the straight line 741 is located in either the region R1 or the region R2 for various reasons such as high-mix low-volume production.

As shown in the plan view of FIG. 5, the transfer drive shaft 63 of 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. There is. 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 first embodiment, except for 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 the location.

In addition, the transfer drive shaft 63 of the transfer drive mechanism 60 is configured to have the three transfer drive shafts of the first transfer drive shaft 63a, the second transfer drive shaft 63b, and the third transfer drive shaft 63c as described above. Without limitation, it is necessary to have more than two transfer drive shafts. It should be noted that the three or more transfer drive shafts that form the transfer drive shaft 63 are configured to be synchronized. To configure to synchronize three or more transfer drive shafts, for example, a belt, a pulley, a chain, a sprocket, or a gear wheel is used for a single servomotor common to the three or more transfer drive shafts. The power transmission member can be used for interlocking.

Hereinafter, a method for manufacturing a resin molded product according to the first embodiment, which is an example of a method for manufacturing a resin molded product using the resin molding device according to the first embodiment, will be described with reference to FIGS. 6 to 12. FIG. 6 shows a flowchart of the method for manufacturing the resin molded product according to the first embodiment. As shown in FIG. 6, in the method for manufacturing a resin molded product of the first embodiment, a step (S10) of placing a molding target between the first mold 10 and the second mold 20, and the first mold 10 and The process includes a step of clamping the second die 20 (S20), a step of resin-forming the molding target (S30), and a step of opening the first die 10 and the second die 20 (S40). Hereinafter, each step will be described in more detail.

First, as shown in the schematic partial cross-sectional view of FIG. 7, a step (S10) of placing a molding target between the first mold 10 and the second mold 20 is performed. In the example shown in FIG. 7, the molding target 1 is installed in the recess 21 of the second mold 20. As the molding target 1, for example, a semiconductor chip mounted on a lead frame or the like can be used.

FIG. 8 shows a schematic plan view of an example of the second die 20 used in the first embodiment. As shown in FIG. 8, the second recess 21 of the second mold 20 is provided only on one side of the pot 22 that is also the passage through which the plunger 64 moves. Further, in the example shown in FIG. 8, 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, as shown in the schematic partial cross-sectional view of FIG. 9, a step (S20) of clamping the first die 10 and the second die 20 is performed. For the mold clamping between the first mold 10 and the second mold 20, for example, the mold clamping mechanism 600 raises the movable platen 300, moves the second mold 20 with respect to the fixed first mold 10, and This can be done by pressing 10 and the second mold 20. The mold clamping between the first mold 10 and the second mold 20 may be performed by moving the first mold 10 with respect to the fixed second mold 20, and the first mold 10 and the second mold 20. It may be performed by moving both.

Next, as shown in the schematic partial sectional view of FIG. 10, a step (S30) of resin-molding the molding target 1 is performed. The resin molding of the molding target 1 can be performed as follows, for example. First, the transfer drive mechanism 60 of the first embodiment shown in FIGS. 4 and 5 raises the plunger unit 61 via the plunger unit support plate 62. As a result, the plunger 64 rises and pushes the resin supplied into the pot 22 to the outside of the pot 22. Next, the resin extruded to the outside of the pot 22 is melted and accumulated in the cull portion 12. Next, the resin after melting 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 is solidified so that the molding target 1 is sealed and the resin molding of the molding target 1 is performed.

11 and 12 are schematic enlarged partial 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 according to the first embodiment. As shown in FIG. 11, after the step (S10) of installing the molding target 1 and before the step (S20) of mold clamping, the solid resin 70a is installed in the pot 22 and the plunger 64 is located under the solid resin 70a.

In the subsequent step of resin-molding the molding target 1 (S30), as shown in FIG. 12, the plunger 64 pushes the solid resin 70a in the pot 22 toward the cull portion 12 of the first die 10, The solid resin 70a is melted by a heater plate (not shown) of the 1st type 10, and the melted resin 70 is accumulated inside the cull portion 12. Then, the molten resin 70 is transferred onto the molding target 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 molding target 1 is completed.

After that, as shown in the flowchart of FIG. 6, a step (S40) of opening the first die 10 and the second die 20 is performed. The mold opening between the first mold 10 and the second mold 20 can be performed, for example, as follows. First, the transfer drive mechanism 60 of the first embodiment lowers the plunger unit 61 via the plunger unit support plate 62. Next, the mold clamping mechanism 600 lowers the movable platen 300, moves the second mold 20 with respect to the fixed first mold 10, and releases the press of the first mold 10 and the second mold 20. Can be done. The mold opening between the first mold 10 and the second mold 20 may also be performed by moving the first mold 10 with respect to the fixed second mold 20, and the first mold 10 and the second mold 20. It may be performed by moving both. Finally, the resin molded product is taken out of the resin molding device. With the above, the production of the resin molded product by the method for producing a resin molded product of Embodiment 1 is completed.

FIG. 13 shows a schematic side view of a transfer driving mechanism 60a of a comparative example based on the conventional technique. FIG. 14 shows a schematic plan view of the transfer driving mechanism 60a of the comparative example. FIG. 14 is a schematic plan view of the transfer drive mechanism 60a of the comparative example shown in FIG. 13 when viewed from the tip of the plunger 64.

As shown in the plan view of FIG. 14, in the transfer driving mechanism 60a of the comparative example, the third transfer driving shaft 63c does not exist, and the center line that divides the width of the plunger unit body 65 in the Y-axis direction into two equal parts. It is characterized in that C-C and a 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 overlap each other. The center 631a of the first transfer drive shaft 63a and the center 631b of the second transfer drive shaft 63b are regions inside the plunger unit body 65 in the X-axis direction with respect to the center 631c of the third transfer drive shaft 63. It is located in the region R5.

In the resin molding apparatus of the first embodiment, when the transfer drive mechanism 60a of the comparative example is used in place of the transfer drive mechanism 60 of the first embodiment, the plunger unit 61 is moved to the plunger row 641 side during the lifting operation of the plunger unit 61. There was a case where it fell down and could not perform a stable lifting operation.

Therefore, as a result of intensive studies by the present inventor, as shown in a plan view of FIG. 5, for example, a third transfer drive shaft 63c is provided between the first transfer drive shaft 63a and the second transfer drive shaft 63b. The center 631c of the third transfer drive shaft 63c is located at a position other than a 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. It was found that the plunger unit 61 can be restrained from falling toward the plunger row 641 during the lifting operation of the plunger unit 61, and a stable lifting operation of the plunger unit 61 can be realized by the transfer driving mechanism 60 of the first embodiment. Has been completed.

Further, in order to realize a more stable lifting operation of the plunger unit 61, as shown in a plan view of FIG. 5, the center 631c of the third transfer drive shaft 63c is divided by the center line CC of the plunger unit main body 65. The plunger unit 641 is located in the region R1 where the single-row plunger row 641 is located, and the center 631a of the first transfer drive shaft 63a and the center 631b of the second transfer drive shaft 63b are located in the plunger unit. Of the two regions divided by the center line C-C of the main body 65, it may be located in the region R2 where the single-row plunger column 641 is not located.

However, the center 631a of the first transfer drive shaft 63a, the center 631b of the second transfer drive shaft 63b, and the center 631c of the third transfer drive shaft 63c are all included in only one of the regions R1 and R2. The plunger unit 61 may be positioned in the position to realize a stable lifting operation.

Further, in order to realize a more stable lifting operation of the plunger unit 61, as shown in a plan view of FIG. 5, the center 631a of the first transfer drive shaft 63a is located outside one side of the plunger unit main body 65 in the X-axis direction. It may be located in the region R3 which is the region of.

Further, in order to realize a more stable lifting operation of the plunger unit 61, as shown in a plan view of FIG. 5, the center 631b of the second transfer drive shaft 63b is placed outside the other side of the plunger unit main body 65 in the X-axis direction. It may be located in the region R4 which is the region of.

Further, in order to realize a more stable lifting operation of the plunger unit 61, as shown in a plan view of FIG. 5, the center 631c of the third transfer drive shaft 63 is located inside the plunger unit body 65 in the X-axis direction. May be located in the region R5.

Note that, in the above, the case where the molding die in which the cavity 90 is positioned only on one side of the plunger 64 is used has been described, but the cavity 90 is positioned on both sides of the plunger 64, for example, as shown in FIG. You may use the shaping|molding die as shown to the typical top view.

<Embodiment 2>
FIG. 16 shows a schematic side view of the transfer drive mechanism 60 of the second embodiment. FIG. 17 shows a schematic plan view of the transfer drive mechanism 60 of the second embodiment. FIG. 17 is a schematic plan view of the transfer drive mechanism 60 of the second embodiment shown in FIG. 16 when viewed from the tip of the plunger 64.

As shown in the plan view of FIG. 17, the transfer drive mechanism 60 of the second embodiment is characterized by including a plurality of plunger rows 643. Plural rows of plunger rows 643 are configured by arranging a single row of plunger rows 641 and a single row of plunger rows 642 in the Y-axis direction. The single-row plunger row 641 is composed of a plurality of plungers 64a, and the single-row plunger row 642 is composed of 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 plan view of FIG. 17, in the transfer drive mechanism 60 of the second embodiment, one of the two regions R1 and the region R2 divided by the center line C-C of the plunger unit body 65 is single. The plunger row 641 of the row is located, and the plunger row 642 of the single row is located in the other region R2. Further, the straight line 741a extending in the X-axis direction through the respective tips 740a of the plurality of plungers 64a forming the single-row plunger row 641 is located in the region R1, and the plurality of plungers 64b forming the single-row plunger row 642 are A straight line 741b passing through each tip 740b and extending in the X-axis direction is located in the region R2.

Therefore, in the second embodiment, it is considered that the number of cases in which the plunger unit 61 collapses during the lifting operation of the plunger unit 61 is smaller than that in the first embodiment. However, also in the transfer drive mechanism 60 of the second embodiment, as shown in the plan view of FIG. 17, 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. Since the center 631c of the third transfer drive shaft 63c is located at a position other than the above, stable lifting operation of the plunger unit 61 is possible as compared with the case where the transfer drive mechanism 60a of the comparative example shown in FIGS. 13 and 14 is used. Can be realized.

In the transfer drive mechanism 60 of the second embodiment, as shown in the plan view of FIG. 17, the center 631c of the third transfer drive shaft 63c is located in the region R1 and the center 631a of the first transfer drive shaft 63a is located. And the center 631b of the second transfer drive shaft 63b are located in the region R2.

Needless to say, the configuration of the plurality of plunger rows 643 is not limited to the configuration shown in the plan view of FIG. 17, and the plurality of plunger rows 643 may be, for example, three or more single-row plunger rows arranged in the Y-axis direction. It may be composed of. Further, the plurality of rows of plunger rows 643 of the second embodiment and the single row of plunger rows 641 of the first embodiment may be exchangeable.

Since the description of the second embodiment other than the above is the same as that of the first embodiment, the description thereof is omitted.

<Embodiment 3>
FIG. 18 shows a schematic plan view of the transfer driving mechanism 60 of the third embodiment. FIG. 18 shows a schematic plan view of the transfer drive mechanism 60 of the third embodiment as seen from the tip of the plunger. Note that in FIG. 18, for convenience of description, the description of the plurality of plungers and the plunger row configured of the plurality of plungers is omitted.

As shown in the plan view of FIG. 18, in the transfer drive mechanism 60 of the third embodiment, one of the two regions R1 and R2 in the Y-axis direction, which are separated by the center line C-C of the plunger unit body 65, is provided. The center 631a of the first transfer drive shaft 63a and the center 631b of the second transfer drive shaft 63b are located in the region R1, and the center 631c of the third transfer drive shaft 63c is located in the other region R2. Is characterized by.

As shown in the plan view of FIG. 18, also in the transfer drive mechanism 60 of the third embodiment, except for 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 the location. Therefore, also in the transfer drive mechanism 60 of the third embodiment, the stable lifting operation of the plunger unit 61 can be realized.

The description of the third embodiment other than the above is the same as that of the first and second embodiments, and thus the description thereof is omitted.

<Embodiment 4>
FIG. 19 shows a schematic plan view of the transfer drive mechanism 60 of the fourth embodiment. FIG. 19 is a schematic plan view of the transfer drive mechanism 60 according to the fourth embodiment as viewed from the tip of the plunger. Note that, also in FIG. 19, for convenience of description, the description of the plurality of plungers and the plunger row formed of the plurality of plungers is omitted.

As shown in a plan view of FIG. 19, the transfer drive mechanism 60 of the fourth embodiment further includes a fourth transfer drive shaft 63d located between the first transfer drive shaft 63a and the second transfer drive shaft 63b. It is characterized by having.

As shown in the plan view of FIG. 19, in the transfer drive mechanism 60 of the fourth embodiment, except for a 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 and the center 641d of the fourth transfer drive shaft 64d are located at the points. Therefore, also in the transfer drive mechanism 60 of the fourth embodiment, the stable lifting operation of the plunger unit 61 can be realized.

Further, in order to realize a more stable lifting operation of the plunger unit 61, as shown in a plan view of FIG. 19, the center 631a of the first transfer drive shaft 63a and the center 631b of the second transfer drive shaft 63b are aligned with each other. A straight line 632 passing through may intersect with a straight line 633 passing through the center 631c of the third transfer driving shaft 63c and the center 631d of the fourth transfer driving shaft 63d.

Further, in order to realize a more stable lifting operation of the plunger unit 61, as shown in a plan view of FIG. 19, the center 631d of the fourth transfer drive shaft 63d is located inside the plunger unit main body 65 in the X-axis direction. It may be located in the region R5.

As shown in the plan view of FIG. 19, in the transfer drive mechanism 60 of the fourth embodiment, the center 631b of the second transfer drive shaft 63b and the center 631d of the fourth transfer drive shaft 63d are located in the region R1. The center 631a of the first transfer drive shaft 63a and the center 631c of the third transfer drive shaft 63c are located in the region R2.

The description of the fourth embodiment other than the above is the same as that of the first to third embodiments, and thus the description thereof is omitted.

<Embodiment 5>
FIG. 20 shows a schematic plan view of the transfer driving mechanism 60 of the fifth embodiment. FIG. 20 is a schematic plan view of the transfer drive mechanism 60 of the fifth embodiment as seen from the tip of the plunger. Note that, also in FIG. 20, for convenience of description, the description of the plurality of plungers and the plunger row formed of the plurality of plungers is omitted.

As shown in the plan view of FIG. 20, the transfer drive mechanism 60 of the fifth embodiment also includes a fourth transfer drive shaft 63d located between the second transfer drive shaft 63b and the third transfer drive shaft 63c. It is characterized by

As shown in the plan view of FIG. 20, also in the transfer drive mechanism 60 of the fifth embodiment, except for 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 and the center 641d of the fourth transfer drive shaft 64d are located at the points. Therefore, also in the transfer drive mechanism 60 of the fourth embodiment, the stable lifting operation of the plunger unit 61 can be realized.

As shown in the plan view of FIG. 20, in the transfer drive mechanism 60 of the fifth embodiment, the center 631a of the first transfer drive shaft 63a and the center 631c of the third transfer drive shaft 63c are located in the region R1. The center 631b of the second transfer drive shaft 63b and the center 631d of the fourth transfer drive shaft 63d are located in the region R2.

Since the description of the fifth embodiment other than the above is the same as that of the first to fourth embodiments, the description thereof will be omitted.

Although the embodiments have been described above, it is also planned from the beginning to appropriately combine the configurations of the above-described embodiments.

The embodiments disclosed this time are to be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description but by the claims, and is intended to include meanings equivalent to the claims and all modifications within the scope.

DESCRIPTION OF REFERENCE NUMERALS 1 molding object, 10 first mold, 11 first recess, 12 cull part, 13 first mold plate, 14 resin passage, 20 second mold, 21 second recess, 22 pot, 23 second mold plate, 30th 1st type 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, 63 transfer drive shaft, 63a first transfer drive shaft, 63b second transfer drive shaft, 63c third transfer drive shaft, 63d fourth transfer drive shaft, 64, 64a, 64b plunger, 65 Plunger unit main body, 70, 70a resin, 90 cavity, 200 first platen, 300 movable platen, 400 second platen, 500 tie bar, 600 mold clamping mechanism, 631a, 631b, 631c, 631d center, 632, 633, 634, 634 741, 741a, 741b Straight line, 641, 642, 643 Plunger row, 740, 740a, 740b Tip, 1000 Mold mechanism part, 2000 Inloader, 3000 Outloader.

The molding module A includes a molding mechanism unit 1000 configured to be capable of resin molding a molding target such as a semiconductor chip mounted on a lead frame. The in-loader module B includes an in-loader 2000 configured to be able to supply a molding target to the molding module A. Out loader module C includes an out loader 3000 that is configured to be able to take out the resin formed molded article from the molding module A. The in-loader 2000 and the out-loader 3000 are configured to be movable in the directions indicated by the arrows in FIG.

As shown in the plan view of FIG. 5, the single-row plunger row 641 is defined by a center line C-C extending in the X-axis direction that bisects the width of the plunger unit body 65 in the Y-axis direction as the second direction. It is located in one of the two divided regions R1 and R2. A straight line 741 extending respective tips 74 0 of the plurality of plungers 6 4 as the X-axis direction that constitutes the plunger column 641 a single row are located in the area R1.

As shown in the plan view of FIG. 14, in the transfer driving mechanism 60a of the comparative example, the third transfer driving shaft 63c does not exist, and the center line that divides the width of the plunger unit body 65 in the Y-axis direction into two equal parts. It is characterized in that C-C and a 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 overlap each other. The center 631a of the first transfer drive shaft 63a and the center 631b of the second transfer drive shaft 63b are located in a region R5 which is a region inside the plunger unit body 65 in the X- axis direction.

Further, in order to achieve a more stable vertical movement of the plunger unit 61, as shown in the plan view of FIG. 5, the inside of the plunger unit body 65 to the center 631c of the third transfer drive shaft 63 c in the X-axis direction You may locate in the area|region R5 which is an area|region.

As shown in the plan view of FIG. 19, in the transfer drive mechanism 60 of the fourth embodiment, except for 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. center 631c of the third transfer drive shaft 63c and the center 631 d of the fourth transfer drive shaft 63 d is positioned at a location. Therefore, also in the transfer drive mechanism 60 of the fourth embodiment, the stable lifting operation of the plunger unit 61 can be realized.

As shown in plan view in FIG. 20, also transfer drive mechanism 60 of the embodiment 5, a fourth transfer drive shaft located between the first transfer drive shaft 63 a and the second transfer drive shaft 63 b 63d It is characterized by having.

As shown in the plan view of FIG. 20, also in the transfer drive mechanism 60 of the fifth embodiment, except for 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. center 631c of the third transfer drive shaft 63c and the center 631 d of the fourth transfer drive shaft 63 d is positioned at a location. Therefore, also in the transfer drive mechanism 60 of the fourth embodiment, the stable lifting operation of the plunger unit 61 can be realized.

DESCRIPTION OF REFERENCE NUMERALS 1 molding object, 10 first mold, 11 first recess, 12 cull part, 13 first mold plate, 14 resin passage, 20 second mold, 21 second recess, 22 pot, 23 second mold plate, 30th type 1 holder, 31 a first plate, 32 first assist block, 40 second mold holders, 41 second assist blocks, 42 second plate, 50 second mold holder mounting block, 60 transfer the driving mechanism, 61 a plunger unit, 62 plunger unit support plate, 63 transfer drive shaft, 63a first transfer drive shaft, 63b second transfer drive shaft, 63c third transfer drive shaft, 63d fourth transfer drive shaft, 64, 64a, 64b plunger, 65 Plunger unit main body, 70, 70a resin, 90 cavity, 200 first platen, 300 movable platen, 400 second platen, 500 tie bar, 600 mold clamping mechanism, 631a, 631b, 631c, 631d center, 632, 633 , 7 41 , 741a, 741b Straight line, 641, 642, 643 Plunger row, 740, 740a, 740b Tip, 1000 Mold mechanism part, 2000 Inloader, 3000 Outloader.

Claims (19)

Transfer drive shaft,
A plunger unit on the transfer drive shaft,
The transfer drive shaft includes at least a first transfer drive shaft, a second transfer drive shaft, and a third transfer drive shaft,
The plunger unit includes a plurality of plungers and a plunger unit body,
The plurality of plungers constitutes a plunger row extending in the first direction,
The tip of each of the plurality of plungers is located outside the plunger unit body,
The first transfer drive shaft, the third transfer drive shaft, and the second transfer drive shaft are located in this order in the first direction,
In a plan view seen from the tip of the plunger, the center of the third transfer drive shaft is located at a position other than a straight line passing through the center of the first transfer drive shaft and the center of the second transfer drive shaft. Located, the transfer drive mechanism. The transfer driving mechanism according to claim 1, wherein the plunger row is a single row or a plurality of rows. The transfer drive mechanism according to claim 2, wherein the single row and the plurality of rows are configured to be exchangeable. The plunger row is the single row,
In the plan view, the plunger row is a first region that is two regions divided by a center line that bisects the width of the plunger unit main body in a second direction different from the first direction. The transfer drive mechanism according to claim 2, wherein the transfer drive mechanism is located in the first region of the second region. In the plan view, the center of the third transfer drive shaft is located in the first region, and the center of the first transfer drive shaft and the center of the second transfer drive shaft are the first region. The transfer drive mechanism according to claim 4, wherein the transfer drive mechanism is located in the region 2. The plunger row is the plurality of rows,
The transfer drive mechanism according to claim 2, wherein the plurality of plunger rows are arranged in a second direction different from the first direction to configure the plurality of rows in the plan view. A first region and a second region in which a part of the plunger rows forming the plurality of rows are two areas divided by a center line that divides the width of the plunger unit main body in the second direction into two equal parts. 7. The transfer driving mechanism according to claim 6, wherein the other part of the plunger row forming the plurality of rows is located in the first area, and the other part is located in the second area. In the plan view, the center of the third transfer drive shaft is located in the first region, and the center of the first transfer drive shaft and the center of the second transfer drive shaft are the first region. The transfer drive mechanism according to claim 7, wherein the transfer drive mechanism is located in the area of 2. The said center of the said 1st transfer drive shaft is located in the one outer side area|region of the said plunger unit main body in the said 1st direction in the said planar view. The transfer drive mechanism described. The transfer drive mechanism according to claim 9, wherein the center of the second transfer drive shaft is located in an area outside the other side of the plunger unit main body in the first direction in the plan view. The transfer drive mechanism according to claim 9, wherein the center of the third transfer drive shaft is located in a region inside the plunger unit main body in the first direction in the plan view. Further comprising a fourth transfer drive shaft located between the first transfer drive shaft and the second transfer drive shaft,
In the plan view, the center of the fourth transfer drive shaft is located at a position other than the straight line passing through the center of the first transfer drive shaft and the center of the second transfer drive shaft. The transfer drive mechanism according to any one of claims 1 to 11. In the plan view, the straight line passing through the center of the first transfer drive shaft and the center of the second transfer drive shaft, the center of the third transfer drive shaft, and the fourth transfer drive. The transfer drive mechanism according to claim 12, wherein a straight line passing through the center of the shaft intersects with the straight line. The transfer drive mechanism according to claim 12 or 13, wherein the center of the fourth transfer drive shaft is located in a region inside the plunger unit main body in the first direction in the plan view. The transfer drive mechanism according to any one of claims 1 to 14, further comprising a plunger unit support plate between the transfer drive shaft and the plunger unit. A transfer driving mechanism according to any one of claims 1 to 15, a molding die, and a mold clamping mechanism,
The molding die is configured such that resin can be transferred to the cavity of the molding die by the plunger of the transfer drive mechanism,
The resin molding apparatus, wherein the mold clamping mechanism is configured to clamp the molding mold. The resin molding device according to claim 16, wherein the cavity is configured to be located only on one side of the plunger. The resin molding apparatus according to claim 16, wherein the cavity is arranged on both sides of the plunger. A method for producing a resin molded article using the resin molding apparatus according to any one of claims 16 to 18.
A step of installing a molding target on the molding die;
A step of clamping the molding die,
A step of resin molding the molding object,
And a step of opening the mold, the method for producing a resin molded product.

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