JP6923502B2 - Transfer drive mechanism, resin molding device and manufacturing method of resin molded products - Google Patents

Description

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

For example, Patent Document 1 describes a transfer molding machine provided with four plungers on an elevating table connected to a rod of a drive cylinder. The transfer molding machine of Patent Document 1 drives the drive cylinder to push up the plunger after molding the upper mold and the lower mold. 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.

Japanese Unexamined Patent Publication No. 8-156012

The transfer molding machine described in Patent Document 1 has a configuration in which two drive 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, the elevating table may not be stably moved up and down 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 and a second transfer drive shaft. A third transfer drive shaft is provided, the plunger unit includes a plurality of plungers and a plunger unit main body, and the plurality of plungers form a plunger row extending in the first direction, and each of the plurality of plungers is provided. The tip of 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. The center of the third 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 in the plan view seen from the tip of the plunger. A transfer drive mechanism can be provided.

According to the embodiment disclosed here, the transfer drive mechanism, the molding die, and the mold clamping mechanism are provided, and the molding die is configured so that the resin can be transferred to the cavity of the molding die by the plunger of the transfer drive mechanism. The mold clamping mechanism can provide a resin molding apparatus configured to mold mold.

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

According to the embodiment disclosed here, it is possible to provide a transfer drive mechanism, a resin molding apparatus, and a method for manufacturing a resin molded product, which enables stable ascending / descending operation.

It is a schematic plan view of the manufacturing apparatus of a resin molded article. It is a schematic perspective view of the resin molding apparatus. It is a schematic partial cross-sectional view of a resin molding apparatus. It is a schematic side view of the transfer drive mechanism of Embodiment 1. FIG. It is a schematic plan view of the transfer drive mechanism of Embodiment 1. It is a flowchart of the manufacturing method of a resin molded article. It is a schematic partial cross-sectional view which illustrates an example of the process of installing a molding object between a 1st mold and a 2nd mold. It is a schematic plan view of an example of the second type. It is a schematic partial cross-sectional view which illustrates an example of the process of molding a 1st mold and a 2nd mold. It is a schematic partial cross-sectional view which illustrates an example of the process of resin molding an object to be molded. FIG. 5 is a schematic enlarged partial cross-sectional view illustrating the transfer of resin into a cavity by the movement of a plunger. FIG. 5 is a schematic enlarged partial cross-sectional view illustrating the transfer of resin into a cavity by the movement of a plunger. It is a schematic side view of the transfer drive mechanism of the comparative example. It is a schematic plan view of the transfer drive mechanism of the comparative example shown in FIG. It is a schematic plan view of another example of the second type. It is a schematic side view of the transfer drive mechanism of Embodiment 2. It is a schematic plan view of the transfer drive mechanism of Embodiment 2. It is a schematic plan view of the transfer drive mechanism of Embodiment 3. It is a schematic plan view of the transfer drive mechanism of Embodiment 4. It is a schematic plan view of the transfer drive mechanism of Embodiment 5.

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

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

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

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

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

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

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

As shown in FIG. 2, the resin molding apparatus of 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 the first platen 200 at a distance.

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

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

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

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

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

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

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

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

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

FIG. 4 shows a schematic side view of the transfer drive mechanism 60 of the first embodiment, which is an example of the transfer drive mechanism used in the resin molding apparatus of the first embodiment. As shown in FIG. 4, the transfer drive mechanism 60 of the first embodiment has 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. It is equipped with 62.

The plunger unit 61 includes a plurality of plungers 64 and a plunger unit main body 65. Each of the plurality of plungers 64 is a rod-shaped member extending linearly in the Z-axis direction, and each tip 740 of the plurality of plungers 64 is located outside the plunger unit main body 65, and each tip of the plurality of plungers 64 is located outside. The other end (not shown) of the 740 is located inside the plunger unit body 65. The plunger unit main body 65 is configured so 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 constitute 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 configured such that the tip 740 of each of the plurality of plungers is located on an arbitrary straight line 741.

As shown in the plan view of FIG. 5, the single-row plunger row 641 is a center line CC extending in the X-axis direction that divides the width of the plunger unit main body 65 in the Y-axis direction into two equal parts. It is located in one of the two separated 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.

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

As shown in the plan view of FIG. 5, the transfer drive 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, other than on 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 is located at the location.

Further, the transfer drive shaft 63 of the transfer drive mechanism 60 has a configuration having three transfer drive shafts of a first transfer drive shaft 63a, a second transfer drive shaft 63b, and a third transfer drive shaft 63c as described above. It is necessary to have three or more transfer drive shafts, but not limited to. The three or more transfer drive shafts constituting the transfer drive shaft 63 are configured to be synchronized. In order to configure three or more transfer drive shafts to be synchronized, for a single servomotor common to three or more transfer drive shafts, for example, belts, pulleys, chains, sprockets, gears, etc. It can be configured to be interlocked with the power transmission member of.

Hereinafter, the method for producing the resin molded product of the first embodiment, which is an example of the method for producing the resin molded product using the resin molding apparatus of 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 of the first embodiment. As shown in FIG. 6, the method for manufacturing the resin molded product of the first embodiment includes a step (S10) of installing a molding object between the first mold 10 and the second mold 20, and the first mold 10 and the first mold 20. It includes a step of mold-fastening the mold 2 (S20), a step of resin molding the object to be molded (S30), and a step of mold-opening the first mold 10 and the second mold 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 installing a molding object between the first mold 10 and the second mold 20 is performed. In the example shown in FIG. 7, the object 1 to be molded is installed in the recess 21 of the second mold 20. As the object 1 to be molded, for example, a semiconductor chip mounted on a lead frame or the like can be used.

FIG. 8 shows a schematic plan view of an example of the second type 20 used in the first embodiment. As shown in FIG. 8, the second recess 21 of the second type 20 is provided only on one side of the pot 22, which is also a passage through which the plunger 64 moves. Further, in the example shown in FIG. 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 molding the first mold 10 and the second mold 20 is performed. In 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 and moves the second mold 20 with respect to the fixed first mold 10, and the first mold This can be done by pressing 10 and the second mold 20. The mold clamping between the first type 10 and the second type 20 may be performed by moving the first type 10 with respect to the fixed second type 20, and the first type 10 and the second type 20 may be performed. It may be done by moving both of them.

Next, as shown in the schematic partial cross-sectional view of FIG. 10, a step (S30) of resin molding the object 1 to be molded is performed. Resin molding of the object 1 to be molded can be performed, for example, as follows. 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 melts and accumulates in the cal portion 12. Next, the molten resin is transferred into the cavity 90 formed by the recess 11 of the first mold 10 and the recess 21 of the second mold 20. After that, the resin of the object 1 to be molded is molded by sealing the object 1 to be molded by solidifying the resin.

11 and 12 show a schematic enlarged partial cross-sectional view illustrating the transfer of the resin 70 into the cavity 90 by the movement of the plunger 64 in the resin molding apparatus of the first embodiment. As shown in FIG. 11, after the step of installing the object 1 to be molded (S10) and before the step of molding (S20), the solid resin 70a is installed in the pot 22 and the plunger is used. 64 is located below the solid resin 70a.

In the subsequent step of resin molding the object 1 to be molded (S30), as shown in FIG. 12, the plunger 64 extrudes the solid resin 70a in the pot 22 toward the cal portion 12 of the first mold 10, and the first mold 10. The solid resin 70a is melted by a heater plate of type 1 10 (not shown), and the melted resin 70 is accumulated inside the cal portion 12. After that, the molten resin 70 is transferred to the object 1 to be molded in the cavity 90 through the resin passage 14 by the pressure generated by the movement of the plunger 64. After that, the molten resin 70 solidifies, and the resin molding of the object 1 to be molded is completed.

After that, as shown in the flowchart of FIG. 6, a step (S40) of opening the first mold 10 and the second mold 20 is performed. The mold opening between the first mold 10 and the second mold 20 can be performed as follows, for example. 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 between the first mold 10 and the second mold 20. Can be done. The mold opening between the first type 10 and the second type 20 may also be performed by moving the first type 10 with respect to the fixed second type 20, and the first type 10 and the second type 20 may be performed. It may be done by moving both of them. Finally, the resin molded product is taken out from the resin molding apparatus. As described above, the production of the resin molded product by the method for producing the resin molded product of the first embodiment is completed.

FIG. 13 shows a schematic side view of the transfer drive mechanism 60a of the comparative example based on the prior art. FIG. 14 shows a schematic plan view of the transfer drive 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 drive mechanism 60a of the comparative example, the third transfer drive shaft 63c does not exist, and the center line that divides the width of the plunger unit main body 65 in the Y-axis direction into two equal parts. It is characterized in that CC 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. 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 an inner region of the plunger unit main body 65 in the X-axis direction.

When the transfer drive mechanism 60a of the comparative example is used in place of the transfer drive mechanism 60 of the first embodiment in the resin molding apparatus of the first embodiment, the plunger unit 61 is on the plunger row 641 side during the ascending / descending operation of the plunger unit 61. In some cases, it collapsed and it was not possible to perform a stable ascending / descending operation.

Therefore, as a result of diligent studies by the present inventor, for example, as shown in the plan view of FIG. 5, a third transfer drive shaft 63c is installed 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 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. Therefore, it has been found that the plunger unit 61 can be prevented from falling to the plunger row 641 side during the ascending / descending operation of the plunger unit 61, and the stable ascending / descending operation of the plunger unit 61 can be realized. Has been completed.

Further, in order to realize a more stable ascending / descending operation of the plunger unit 61, as shown in the plan view of FIG. 5, the center 631c of the third transfer drive shaft 63c is separated by the center line CC of the plunger unit main body 65. Of the two regions, the center 631a of the first transfer drive shaft 63a and the center 631b of the second transfer drive shaft 63b are positioned in the region R1 where the single-row plunger row 641 is located, and the plunger unit Of the two regions separated by the center line CC of the main body 65, the single-row plunger row 641 may be located in the region R2 where it 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 in only one of the regions R1 and R2. The plunger unit 61 may be positioned at the position to realize a stable ascending / descending operation of the plunger unit 61.

Further, in order to realize a more stable lifting operation of the plunger unit 61, as shown in the plan view of FIG. 5, the center 631a of the first transfer drive shaft 63a is located on one outer 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 the plan view of FIG. 5, the center 631b of the second transfer drive shaft 63b is located on the outside of 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 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 It may be located in the region R5, which is a region.

In the above, the case of using a molding mold in which the cavity 90 is configured to be located on only one side of the plunger 64 has been described, but the cavity 90 is configured to be located on both sides of the plunger 64, for example, FIG. A molding mold as shown in the schematic plan view of the above may be used.

<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 rows of plunger rows 643. The plurality of plunger rows 643 are configured by arranging the single-row plunger row 641 and the single-row plunger row 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 extend in the X-axis direction, respectively.

As shown in the plan view of FIG. 17, in the transfer drive mechanism 60 of the second embodiment, only one region R1 of the two regions R1 and the region R2 separated by the center line CC of the plunger unit main body 65 is used. The row plunger row 641 is located, and the single row plunger row 642 is located in the other region R2. Further, a straight line 741a extending in the X-axis direction through the respective tips 740a of the plurality of plungers 64a constituting 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. A straight line 741b extending in the X-axis direction through each tip 740b is located in the region R2.

Therefore, in the second embodiment, it is considered that the case where the plunger unit 61 falls during the ascending / descending operation of the plunger unit 61 is less likely than in the case of 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 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. By locating the center 631c of the third transfer drive shaft 63c at a position other than the above, the plunger unit 61 is stably raised and lowered 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 multi-row plunger row 643 is not limited to the configuration shown in the plan view of FIG. 17, and in the multi-row plunger row 643, for example, three or more single-row plunger rows are arranged in the Y-axis direction. It may be composed of. Further, the plurality of plunger rows 643 of the second embodiment and the single-row plunger row 641 of the first embodiment may be interchangeably configured.

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

<Embodiment 3>
FIG. 18 shows a schematic plan view of the transfer drive mechanism 60 of the third embodiment. FIG. 18 shows a schematic plan view of the transfer drive mechanism 60 of the third embodiment when viewed from the tip of the plunger. In FIG. 18, for convenience of explanation, the description of the plurality of plungers and the plunger column composed 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 the region R2 in the Y-axis direction separated by the center line CC of the plunger unit main body 65. 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. It is characterized by.

As shown in the plan view of FIG. 18, also in the transfer drive mechanism 60 of the third embodiment, other than on the straight line 632 passing through the center 631a of the first transfer drive shaft 63a and the center 631b of the second transfer drive shaft 63b. The center 631c of the third transfer drive shaft 63c is located at the location. Therefore, even in the transfer drive mechanism 60 of the third embodiment, stable ascending / descending operation of the plunger unit 61 can be realized.

Since the description other than the above in the third embodiment is the same as that in the first and second embodiments, the description thereof will be 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 of the fourth embodiment when viewed from the tip of the plunger. Also in FIG. 19, for convenience of explanation, the description of the plurality of plungers and the plunger column composed of the plurality of plungers is omitted.

As shown in the 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, other than on 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. 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, even in the transfer drive mechanism 60 of the fourth embodiment, stable ascending / descending operation of the plunger unit 61 can be realized.

Further, in order to realize a more stable ascending / descending operation of the plunger unit 61, as shown in the 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 arranged. The straight line 632 may intersect with the straight line 633 passing through the center 631c of the third transfer drive shaft 63c and the center 631d of the fourth transfer drive shaft 63d.

Further, in order to realize a more stable lifting operation of the plunger unit 61, as shown in the plan view of FIG. 19, the center 631d of the fourth transfer drive shaft 63d is 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.

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

<Embodiment 5>
FIG. 20 shows a schematic plan view of the transfer drive mechanism 60 of the fifth embodiment. FIG. 20 is a schematic plan view of the transfer drive mechanism 60 of the fifth embodiment when viewed from the tip of the plunger. Also in FIG. 20, for convenience of explanation, the description of the plurality of plungers and the plunger column composed 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 has a fourth transfer drive shaft 63d located between the first transfer drive shaft 63 a and the second transfer drive shaft 63 b. 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, other than on the straight line 632 passing through the center 631a of the first transfer drive shaft 63a and the center 631b of the second transfer drive shaft 63b. 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, even in the transfer drive mechanism 60 of the fourth embodiment, stable ascending / descending 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 other than the above in the fifth embodiment is the same as that in the first to fourth embodiments, the description thereof will be omitted.

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

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

1 Molding object, 10 1st mold, 11 1st recess, 12 cal part, 13 1st mold plate, 14 resin passage, 20 2nd mold, 21 2nd recess, 22 pot, 23 2nd mold plate, 30th type 1 holder, 31 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 body, 70, 70a resin, 90 cavity, 200 1st platen, 300 movable platen, 400 2nd 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, 2000 inloader, 3000 outloader.

Claims (19)

Transfer drive shaft and
The plunger unit on the transfer drive shaft is provided.
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 main body.
The plurality of plungers form a plunger row extending in the first direction.
The tips of the plurality of plungers are 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. The transfer drive mechanism that is located. The transfer drive 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 interchangeably configured. The plunger row is the single row.
In the plan view, the plunger row includes a first region, which is two regions separated by a center line that divides the width of the plunger unit body into two equal parts in a second direction different from the first direction. The transfer drive mechanism according to claim 2 or 3, which 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. The transfer drive mechanism according to claim 4, which is located in the region 2. The plunger row is the plurality of rows.
The transfer drive mechanism according to claim 2 or 3, wherein in the plan view, the plunger rows are arranged in a second direction different from the first direction to form the plurality of rows. A first region and a second region in which a part of the plunger rows constituting the plurality of rows is two regions separated by a center line that divides the width of the plunger unit main body into two equal parts in the second direction. The transfer drive mechanism according to claim 6, wherein the transfer drive mechanism is located in the first region, and the other part of the plunger rows constituting the plurality of rows is located in 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. The transfer drive mechanism according to claim 7, which is located in the region 2. In the plan view, the center of the first transfer drive shaft is located in an outer region of one of the plunger unit main body in the first direction, according to any one of claims 1 to 8. The transfer drive mechanism described. The transfer drive mechanism according to claim 9, wherein in the plan view, the center of the second transfer drive shaft is located in the other outer region of the plunger unit body in the first direction. The transfer drive mechanism according to claim 9 or 10, wherein in the plan view, the center of the third transfer drive shaft is located in a region inside the plunger unit main body in the first direction. 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 on 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. The transfer drive mechanism according to claim 12 or 13, wherein in the plan view, the center of the fourth transfer drive shaft is located in a region inside the plunger unit main body in the first direction. 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. The transfer drive mechanism according to any one of claims 1 to 15, a molding die, and a mold clamping mechanism are provided.
The molding die is configured so that the resin can be transferred to the cavity of the molding die by the plunger of the transfer drive mechanism.
The mold clamping mechanism is a resin molding apparatus configured so that the molding mold can be molded. The resin molding apparatus according to claim 16, wherein the cavity is configured to be located on only one side of the plunger. The resin molding apparatus according to claim 16, wherein the cavities are configured to be located on both sides of the plunger. A method for producing a resin molded product using the resin molding apparatus according to any one of claims 16 to 18.
The process of installing the object to be molded in the molding mold and
The process of molding the molding mold and
The process of resin molding the object to be molded and
A method for producing a resin molded product, comprising a step of opening the mold.

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