CN112912221B - Transfer drive mechanism, resin molding apparatus, and method for manufacturing resin molded product - Google Patents

Transfer drive mechanism, resin molding apparatus, and method for manufacturing resin molded product Download PDF

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Publication number
CN112912221B
CN112912221B CN201980070701.3A CN201980070701A CN112912221B CN 112912221 B CN112912221 B CN 112912221B CN 201980070701 A CN201980070701 A CN 201980070701A CN 112912221 B CN112912221 B CN 112912221B
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Prior art keywords
drive shaft
transmission drive
plunger
center
drive mechanism
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CN201980070701.3A
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CN112912221A (en
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市桥秀男
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Towa Corp
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Towa Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/02—Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/02—Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity
    • B29C45/021—Plunger drives; Pressure equalizing means for a plurality of transfer plungers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/53—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/64—Mould opening, closing or clamping devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
    • H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
    • H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
    • H01L21/565—Moulds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/181—Encapsulation

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)

Abstract

The invention provides a conveying driving mechanism capable of performing stable lifting action, a resin molding device and a manufacturing method of a resin molded product. The transmission drive mechanism (60) includes a transmission drive shaft (63) and a plunger unit (65) on the transmission drive shaft (63). The transmission drive shaft (63) comprises at least: a first transmission drive shaft (63a), a second transmission drive shaft (63b), and a third transmission drive shaft (63 c). In a plan view viewed from the front end (740) of the plunger (64), the center (631c) of the third transmission drive shaft (63c) is located at a position other than on a straight line (632) passing through the center (631a) of the first transmission drive shaft (63a) and the center (631b) of the second transmission drive shaft (63 b).

Description

Transfer drive mechanism, resin molding apparatus, and method for manufacturing resin molded product
Technical Field
The present disclosure relates to a transfer drive mechanism, a resin molding apparatus, and a method of manufacturing a resin molded product.
Background
For example, patent document 1 describes a transfer molding machine including four plungers on an elevating table connected to a rod of a driving cylinder (cylinder). The transfer molding machine of patent document 1 drives the driving cylinder to push up the plunger after the upper mold and the lower mold are clamped. Thereby, the piston portion of the plunger slides in the tank to extrude the molten resin, and the resin is injected into the cavity formed between the upper die and the lower die.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 8-156012
Disclosure of Invention
Problems to be solved by the invention
The transfer molding machine described in patent document 1 has the following configuration: two driving cylinders are arranged linearly with respect to four plungers linearly arranged on an elevating table. Therefore, in the transfer molding machine described in patent document 1, the lifting table may not be stably lifted by the driving cylinder.
Means for solving the problems
According to embodiments disclosed herein, there may be provided a transport drive mechanism comprising: a transmission drive shaft; and a plunger unit on the transmission drive shaft, the transmission drive shaft including at least: the plunger unit includes a plurality of plungers constituting a plunger row extending in a first direction, and a plunger unit body, wherein front ends of the plurality of plungers are located outside the plunger unit body, the first transmission drive shaft, the third transmission drive shaft, and the second transmission drive shaft are located in the first direction in this order, and a center of the third transmission drive shaft is located at a position other than a position on a straight line passing through a center of the first transmission drive shaft and a center of the second transmission drive shaft in a plan view of the front ends of the plungers.
According to the embodiments disclosed herein, there can be provided a resin molding apparatus including the conveyance drive mechanism, a molding die configured to be capable of transferring a resin to a cavity of the molding die by a plunger of the conveyance drive mechanism, and a mold clamping mechanism configured to be capable of clamping the molding die.
According to an embodiment disclosed herein, there is provided a method for manufacturing a resin molded article using the resin molding apparatus, the method including: a step of setting a molding object in a molding die; closing the molding dies; performing resin molding on a molding object; and opening the forming die.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the embodiments disclosed herein, it is possible to provide a transfer drive mechanism, a resin molding apparatus, and a method of manufacturing a resin molded product, which are capable of performing a stable lifting operation.
Drawings
Fig. 1 is a schematic plan view of an apparatus for producing a resin molded product.
Fig. 2 is a schematic perspective view of the resin molding apparatus.
Fig. 3 is a schematic partial sectional view of the resin molding apparatus.
Fig. 4 is a schematic side view of the conveyance drive mechanism of embodiment 1.
Fig. 5 is a schematic plan view of the conveyance drive mechanism of embodiment 1.
Fig. 6 is a flowchart of a method of manufacturing a resin molded product.
Fig. 7 illustrates a schematic partial cross-sectional view of an example of a step of disposing a forming object between a first die and a second die.
Fig. 8 is a schematic plan view of an example of the second mold.
Fig. 9 is a schematic partial cross-sectional view illustrating an example of a step of closing the first mold and the second mold.
Fig. 10 is a schematic partial cross-sectional view illustrating an example of a step of resin-molding a molding object.
Fig. 11 is a schematic enlarged partial sectional view illustrating transfer of the resin into the cavity by movement of the plunger.
Fig. 12 is a schematic enlarged partial sectional view illustrating transfer of the resin into the cavity by movement of the plunger.
Fig. 13 is a schematic side view of a conveyance drive mechanism of a comparative example.
Fig. 14 is a schematic plan view of the conveyance drive mechanism of the comparative example shown in fig. 13.
Fig. 15 is a schematic plan view of another example of the second mold.
Fig. 16 is a schematic side view of the conveyance drive mechanism of embodiment 2.
Fig. 17 is a schematic plan view of the conveyance drive mechanism of embodiment 2.
Fig. 18 is a schematic plan view of the conveyance drive mechanism of embodiment 3.
Fig. 19 is a schematic plan view of the conveyance drive mechanism of embodiment 4.
Fig. 20 is a schematic plan view of the conveyance drive mechanism of embodiment 5.
Description of the symbols
1: object to be molded
10: first die
11: first concave part (concave part)
12: collecting part
13: first template
14: resin passage
20: second mold
21: second concave part (concave part)
22: pot for storing food
23: second template
30: first die holder
31: first plate
32: first auxiliary block
40: second die holder
41: second auxiliary block
42: second plate
50: second die holder mounting block
60. 60 a: conveying driving mechanism
61: plunger unit
62: plunger unit support plate
63: transmission drive shaft
63 a: first transmission driving shaft
63 b: second transmission driving shaft
63 c: third transfer drive shaft
63 d: fourth transfer drive shaft
64. 64a, 64 b: plunger piston
65: plunger unit body
70. 70 a: resin composition
90: die cavity
200: first platen
300: movable bedplate
400: second platen
500: connecting rod
600: mould clamping mechanism
631a, 631b, 631c, 631 d: center of a ship
632. 633, 741a, 741 b: straight line
641. 642, 643: plunger row
740. 740a, 740 b: front end
1000: mold mechanism part
2000: entering loader
3000: discharging loader
A: molding die
B: access loader module
C: ejector loader module
R1-R5: region(s)
S10, S20, S30, S40: step (ii) of
Detailed Description
Hereinafter, embodiments will be described. In the drawings used for the description of the embodiments, the same reference numerals denote the same or corresponding parts.
< embodiment 1 >
Fig. 1 is a schematic plan view of an apparatus for producing a resin molded product according to embodiment 1. As shown in fig. 1, the apparatus for producing a resin molded product according to embodiment 1 includes: a molding (moulding) module a, an intake loader (loader) module B, and an exhaust loader (outloader) module C.
The mold module a includes, for example, a mold mechanism 1000, and the mold mechanism 1000 is configured to be capable of resin-molding a molding object such as a semiconductor chip mounted on a lead frame (lead frame). The entry loader module B includes an entry loader 2000, and the entry loader 2000 is configured to be able to supply the molding object to the molding module a. The ejection loader module C includes an ejection loader 3000, and the ejection loader 3000 is configured to be able to take out the resin molded product from the mold module a. The entry loader 2000 and the discharge loader 3000 are configured to be movable in the direction indicated by the arrow in fig. 1.
The mold block a and the entry loader block B are detachably connected to each other by a connecting mechanism such as a bolt or a pin. The mold block a and the ejector loader block C are also detachably connected to each other by a connecting mechanism such as a bolt or a pin.
The apparatus for producing a resin molded article according to embodiment 1 shown in fig. 1 includes two molding modules a, but the number of molding modules a can be adjusted to increase or decrease according to the amount of production. The apparatus for producing a resin molded article according to embodiment 1 may include, for example, one mold block a, or may include four mold blocks a. That is, the apparatus for producing a resin molded product according to embodiment 1 may be configured to increase or decrease the number of the mold blocks a.
In the apparatus for manufacturing a resin molded product according to embodiment 1 shown in fig. 1, the mold module a, the carry-in loader module B, and the carry-out loader module C are arranged in the order shown in fig. 1, but the apparatus for manufacturing a resin molded product may be configured by, for example, one master machine in which the mold module a, the carry-in loader module B, and the carry-out loader module C are integrated and one or more slave machines including only the mold module a. One molding module a may be understood as an apparatus for producing a resin molded product according to the embodiment.
Fig. 2 is a schematic perspective view of a resin molding apparatus according to embodiment 1. The resin molding apparatus according to embodiment 1 shown in fig. 2 is disposed in a mold mechanism 1000 of the apparatus for producing a resin molded article according to embodiment 1 shown in fig. 1.
As shown in fig. 2, the resin molding apparatus according to embodiment 1 includes: a first platen 200, a second platen 400, a movable platen 300, and a link 500. The second platen 400 is in spaced opposition to the first platen 200.
The movable platen 300 is located between the first platen 200 and the second platen 400, and is configured to be movable between the first platen 200 and the second platen 400 relative to the first platen 200 along the link 500.
The link 500 is a rod-like member extending between the first platen 200 and the second platen 400. One end of the link 500 is fixed to the first platen 200, and the other end of the link 500 is fixed to the second platen 400.
The resin molding apparatus according to embodiment 1 shown in fig. 2 includes: a first die holder 30 attached to the first platen 200; a second die holder mounting block 50 mounted to the movable platen 300; a second die holder 40 mounted to a second die holder mounting block 50; a transfer drive mechanism 60 in the second die holder mounting block 50; and a mold clamping mechanism 600 between the movable platen 300 and the second platen 400. 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 a resin molding apparatus according to embodiment 1. As shown in fig. 3, the resin molding apparatus according to embodiment 1 includes: a first die 10 as a forming die held by a first die holder 30; and a second die 20 as a forming die held by the second die holder 40.
The mold clamping mechanism 600 is configured to be able to clamp the first mold 10 and the second mold 20 by moving the movable platen 300 relative to the first platen 200 to press the first mold 10 and the second mold 20.
The first die holder 30 includes a first plate 31 and a first auxiliary block (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 heat plate in this order from the first platen 200 side. The first auxiliary block 32 is configured to be able to fix the first die 10 below the first plate 31.
The second die 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 die holder attachment block 50, and includes a heat insulating plate and a heat plate in this order from the second die holder attachment block 50 side. The second auxiliary block 41 is configured to be able to fix the second die 20 to the second plate 42.
The first die 10 includes: a first recess 11, a collection (well) portion 12, and a first template 13. The first recess 11 may include a shape corresponding to a post-resin molding shape of the molding object. The collecting portion 12 serves as a reservoir for the resin before the resin is transferred to the object to be molded. The first die plate 13 is configured as a first plate 31 that can be fixed to the first die holder 30.
The second die 20 includes: a second recess 21, a can (pot)22, and a second template 23. The second recess 21 may include a shape corresponding to a post-resin molding shape of the molding object. The tank 22 is used as a setting portion for resin used for resin molding of the molding object. The second die plate 23 is configured as a second plate 42 that can be fixed to the second die holder 40.
Fig. 4 is a schematic side view of a conveyance drive mechanism 60 according to embodiment 1, which is an example of a conveyance drive mechanism used in a resin molding apparatus according to embodiment 1. As shown in fig. 4, the conveyance drive mechanism 60 of embodiment 1 includes: the transmission drive shaft 63; a plunger unit 61 on a transmission drive shaft 63; and a plunger unit support plate 62 between the transmission drive shaft 63 and the plunger unit 61.
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 linearly extending in the Z-axis direction, and each tip 740 of the plurality of plungers 64 is positioned outside the plunger unit main body 65, and the other end (not shown) of each tip 740 of the plurality of plungers 64 is positioned inside the plunger unit main body 65. The plunger unit main body 65 is configured such that the plunger 64 can be moved up and down inside the plunger unit main body 65.
Fig. 5 shows a schematic plan view of the conveyance drive mechanism 60 according to embodiment 1. Fig. 5 is a schematic plan view of the conveyance drive mechanism 60 shown in fig. 4 when viewed from the front end of the plunger 64. As shown in the plan view of fig. 5, the plurality of plungers 64 constitute a single plunger row 641 extending in the X-axis direction as the first direction. As shown in the plan view of fig. 5, the plunger row 641 having a single row is configured such that the distal ends 740 of the plurality of plungers are positioned on an arbitrary straight line 741.
As shown in the plan view of fig. 5, the plunger row 641 of a single row is located in one region R1 of two regions R1 and R2 of the plunger unit body 65 that bisect the width in the Y-axis direction as the second direction, the two regions R1 and R2 being divided by a center line C-C extending in the X-axis direction. Further, a straight line 741 passing through the respective leading ends 740 of the plurality of plungers 64 constituting the single plunger row 641 and extending in the X-axis direction is located in the region R1.
Furthermore, the single row of plunger rows 641 or the straight line 741 may be located in the two regions R1 and the other region R2 of the region R2 of the plunger unit body 65 divided by the center line C-C. The configuration in which the plunger row 641 or the straight line 741 is located in the region R1 or the region R2 is required for various reasons such as mass production of a plurality of types.
As shown in the plan view of fig. 5, the transmission drive shaft 63 of the transmission drive mechanism 60 includes a first transmission drive shaft 63a, a second transmission drive shaft 63b, and a third transmission drive shaft 63 c. As shown in the plan view of fig. 5, the first conveyance drive shaft 63a, the third conveyance drive shaft 63c, and the second conveyance drive shaft 63b are located in this order in the X-axis direction.
As shown in the plan view of fig. 5, in the conveyance drive mechanism 60 according to embodiment 1, the center 631c of the third conveyance drive shaft 63c is located at a position other than on the straight line 632 passing through the center 631a of the first conveyance drive shaft 63a and the center 631b of the second conveyance drive shaft 63 b.
The transmission drive shaft 63 of the transmission drive mechanism 60 is not limited to the configuration having three transmission drive shafts including the first transmission drive shaft 63a, the second transmission drive shaft 63b, and the third transmission drive shaft 63c as described above, but it is necessary to have three or more transmission drive shafts. Further, three or more transmission drive shafts constituting the transmission drive shaft 63 are configured to maintain synchronization. In order to synchronize the three or more transmission drive shafts, a single servomotor common to the three or more transmission drive shafts may be used as a power transmission member such as a belt, a pulley (pulley), a chain (chain), a sprocket (sprocket), or a gear.
Hereinafter, a method for producing a resin molded article according to embodiment 1, which is an example of a method for producing a resin molded article using the resin molding apparatus according to embodiment 1, will be described with reference to fig. 6 to 12. Fig. 6 is a flowchart showing a method for producing a resin molded product according to embodiment 1. As shown in fig. 6, the method for producing a resin molded article according to embodiment 1 includes: a step (S10) of disposing a molding object between the first die 10 and the second die 20; a step (S20) of clamping the first die 10 and the second die 20; a step (S30) of resin-molding the molding object; and 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 of providing a molding object between the first die 10 and the second die 20 is performed (S10). In the example shown in fig. 7, the object 1 is provided 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 can be used.
Fig. 8 is a schematic plan view showing an example of the second die 20 used in embodiment 1. As shown in fig. 8, the second recess 21 of the second die 20 is provided only on one side of the can 22, which is also a passage through which the plunger 64 moves. In the example shown in fig. 8, the shape of the second recess 21 is rectangular and the shape of the can 22 is circular, but the shape is not limited to these shapes.
Next, as shown in the schematic partial sectional view of fig. 9, a step of clamping the first die 10 and the second die 20 is performed (S20). The first die 10 and the second die 20 can be clamped by, for example, moving the movable platen 300 upward by the clamping mechanism 600, moving the second die 20 relative to the fixed first die 10, and pressing the first die 10 and the second die 20. The first mold 10 and the second mold 20 may be clamped by moving the first mold 10 relative to the fixed second mold 20, or by moving both the first mold 10 and the second mold 20.
Next, as shown in the schematic partial cross-sectional view of fig. 10, a step of resin-molding the molding object 1 is performed (S30). The resin molding of the object 1 can be performed as follows, for example. First, the transport drive mechanism 60 according to embodiment 1 shown in fig. 4 and 5 raises the plunger unit 61 via the plunger unit support plate 62. Thereby, the plunger 64 is raised to push out the resin supplied into the tank 22 to the outside of the tank 22. Next, the resin extruded to the outside of the tank 22 is melted and accumulated in the collecting portion 12. Next, the melted resin is transferred into cavity 90 including concave portion 11 of first mold 10 and concave portion 21 of second mold 20. Thereafter, the object 1 is sealed by curing the resin, and the object 1 is molded with the resin.
Fig. 11 and 12 are schematic enlarged partial cross-sectional views illustrating the resin molding apparatus according to embodiment 1, in which the resin 70 is transferred into the cavity 90 by the movement of the plunger 64. As shown in fig. 11, after the step of providing the molding object 1 (S10) and before the step of clamping the mold (S20), the solid resin 70a is provided in the tank 22, and the plunger 64 is positioned below the solid resin 70 a.
In the subsequent step (S30) of resin-molding the molding object 1, as shown in fig. 12, the plunger 64 pushes out the solid resin 70a in the tank 22 toward the collecting portion 12 of the first die 10, the solid resin 70a is melted by a hot plate (not shown) of the first die 10, and the melted resin 70 is accumulated in the collecting portion 12. Thereafter, the melted resin 70 is transferred to the object 1 in the cavity 90 through the resin passage 14 by the pressure generated by the movement of the plunger 64. Thereafter, the melted resin 70 is solidified, and the resin molding of the molding object 1 is completed.
Thereafter, as shown in the flowchart of fig. 6, a step of opening the first mold 10 and the second mold 20 is performed (S40). The first mold 10 and the second mold 20 can be opened as follows. First, the conveyance drive mechanism 60 according to embodiment 1 lowers the plunger unit 61 via the plunger unit support plate 62. Next, the movable platen 300 is lowered by the mold clamping mechanism 600, the second die 20 is moved relative to the fixed first die 10, and the pressing between the first die 10 and the second die 20 is released. The mold opening 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 may be performed by moving both the first mold 10 and the second mold 20. Finally, the resin molded product is taken out of the resin molding apparatus. As described above, the production of the resin molded article by the method for producing a resin molded article according to embodiment 1 is completed.
Fig. 13 is a schematic side view of a conveyance drive mechanism 60a according to a comparative example of the related art. Fig. 14 shows a schematic plan view of a conveyance drive mechanism 60a of a comparative example. Fig. 14 is a schematic plan view of the conveyance drive mechanism 60a of the comparative example shown in fig. 13 when viewed from the front end of the plunger 64.
As shown in the plan view of fig. 14, the conveyance drive mechanism 60a of the comparative example is characterized in that: the third transmission drive shaft 63C is not present, and a center line C-C bisecting the width of the plunger unit body 65 in the Y-axis direction coincides with a straight line 632 passing through the center 631a of the first transmission drive shaft 63a and the center 631b of the second transmission drive shaft 63 b. The center 631a of the first transmission drive shaft 63a and the center 631b of the second transmission drive shaft 63b are located in a region R5 that is an area inside the plunger unit main body 65 in the X-axis direction.
In the resin molding apparatus according to embodiment 1, when the conveyance drive mechanism 60a according to the comparative example is used instead of the conveyance drive mechanism 60 according to embodiment 1, the plunger unit 61 is tilted toward the plunger row 641 during the upward and downward movement of the plunger unit 61, and a stable upward and downward movement may not be performed.
Therefore, the present inventors have conducted diligent studies and found that: by providing the third transmission drive shaft 63c between the first transmission drive shaft 63a and the second transmission drive shaft 63b and locating the center 631c of the third transmission drive shaft 63c at a position other than the position on the straight line 632 passing through the center 631a of the first transmission drive shaft 63a and the center 631b of the second transmission drive shaft 63b as shown in the plan view of fig. 5, for example, it is possible to suppress the plunger 61 from falling down toward the plunger row 641 during the upward and downward movement of the plunger 61 and to realize a stable upward and downward movement of the plunger unit 61, thereby completing the transmission drive mechanism 60 according to embodiment 1.
In order to realize a more stable up-and-down operation of the plunger unit 61, as shown in the plan view of fig. 5, the center 631C of the third transmission drive shaft 63C may be positioned in the region R1 where the single-row plunger row 641 is located out of the two regions of the plunger unit body 65 divided by the center line C-C, and the center 631a of the first transmission drive shaft 63a and the center 631b of the second transmission drive shaft 63b may be positioned in the region R2 where the single-row plunger row 641 is not located out of the two regions of the plunger unit body 65 divided by the center line C-C.
However, the center 631a of the first transmission drive shaft 63a, the center 631b of the second transmission drive shaft 63b, and the center 631c of the third transmission drive shaft 63c may all be located in only one of the regions R1 and R2, thereby achieving a stable lifting operation of the plunger unit 61.
In order to achieve 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 transmission drive shaft 63a may be located in the region R3, which is one of the outer regions of the plunger unit main body 65 in the X-axis direction.
In order to realize a more stable elevating operation of the plunger unit 61, as shown in the plan view of fig. 5, the center 631b of the second transmission drive shaft 63b may be located in the region R4, which is the other outer region of the plunger unit main body 65 in the X-axis direction.
In order to realize a more stable elevating operation of the plunger unit 61, as shown in the plan view of fig. 5, the center 631c of the third transmission drive shaft 63c may be located in the region R5, which is the inner region of the plunger unit main body 65 in the X-axis direction.
In the above description, the case where the molding die configured such that the cavity 90 is positioned only on one side of the plunger 64 is used has been described, but a molding die configured such that the cavity 90 is positioned on both sides of the plunger 64, for example, as shown in the schematic plan view of fig. 15, may be used.
< embodiment 2 >
Fig. 16 is a schematic side view of the conveyance drive mechanism 60 according to embodiment 2. Fig. 17 is a schematic plan view of the conveyance drive mechanism 60 according to embodiment 2. Fig. 17 is a schematic plan view of the conveyance drive mechanism 60 of embodiment 2 shown in fig. 16 when viewed from the front end of the plunger 64.
As shown in the plan view of fig. 17, the transfer drive mechanism 60 of embodiment 2 is characterized by including a plurality of plunger rows 643. The plunger rows 643 are formed by arranging plunger rows 641 and 642 in a single row in the Y axis direction. A single column of plungers 641 comprises a plurality of plungers 64a and a single column of plungers 642 comprises a plurality of plungers 64 b. The plunger rows 641 and 642 extend in the X-axis direction.
As shown in the plan view of fig. 17, in the transfer drive mechanism 60 of embodiment 2, the single row of plunger rows 641 is located in one region R1 of the two regions R1 and R2 of the plunger unit body 65 divided by the center line C-C, and the single row of plunger rows 642 is located in the other region R2. Further, a straight line 741a passing through the respective tips 740a of the plurality of plungers 64a constituting the single plunger row 641 and extending in the X axis direction is located in the region R1, and a straight line 741b passing through the respective tips 740b of the plurality of plungers 64b constituting the single plunger row 642 and extending in the X axis direction is located in the region R2.
Therefore, it is considered that embodiment 2 has less possibility that the plunger unit 61 falls down during the elevating operation of the plunger unit 61 than embodiment 1. However, in the conveyance drive mechanism 60 according to embodiment 2, as shown in the plan view of fig. 17, the center 631c of the third conveyance drive shaft 63c is located at a position other than on the straight line 632 passing through the center 631a of the first conveyance drive shaft 63a and the center 631b of the second conveyance drive shaft 63b, and thus, compared to the case of using the conveyance drive mechanism 60a according to the comparative example shown in fig. 13 and 14, a stable up-and-down operation of the plunger unit 61 can be achieved.
In the transport drive mechanism 60 according to embodiment 2, as shown in the plan view of fig. 17, the center 631c of the third transport drive shaft 63c is located in the region R1, and the center 631a of the first transport drive shaft 63a and the center 631b of the second transport drive shaft 63b are located in the region R2.
Of course, the configuration of the multiple plunger rows 643 is not limited to the configuration shown in the plan view of fig. 17, and the multiple plunger rows 643 may be configured by arranging, for example, three or more single plunger rows 643 in the Y axis direction. The plunger rows 643 of the plurality of rows according to embodiment 2 and the plunger rows 641 of the single row according to embodiment 1 may be configured to be interchangeable.
The description of embodiment 2 other than the above is the same as embodiment 1, and therefore the description is omitted.
< embodiment 3 >
Fig. 18 is a schematic plan view of a conveyance drive mechanism 60 according to embodiment 3. Fig. 18 shows a schematic plan view of the conveyance drive mechanism 60 according to embodiment 3 when viewed from the front end of the plunger. In fig. 18, for convenience of explanation, the description of the plurality of plungers and the plunger row including the plurality of plungers is omitted.
As shown in the plan view of fig. 18, the conveyance drive mechanism 60 of embodiment 3 is characterized in that: the center 631a of the first transmission drive shaft 63a and the center 631C of the second transmission drive shaft 63b are located in one region R1 of two regions R1 and R2 in the Y-axis direction of the plunger unit body 65 divided by the central axis C-C, and the center 631C of the third transmission drive shaft 63C is located in the other region R2.
As shown in the plan view of fig. 18, in the transmission drive mechanism 60 according to embodiment 3, the center 631c of the third transmission drive shaft 63c is also located at a position other than on the straight line 632 passing through the center 631a of the first transmission drive shaft 63a and the center 631b of the second transmission drive shaft 63 b. Therefore, in the conveyance drive mechanism 60 according to embodiment 3, a stable elevating operation of the plunger unit 61 can be realized.
The description of embodiment 3 other than the above is the same as embodiments 1 and 2, and therefore the description is omitted.
< embodiment 4 >
Fig. 19 is a schematic plan view of the conveyance drive mechanism 60 according to embodiment 4. Fig. 19 is a schematic plan view of the conveyance drive mechanism 60 of embodiment 4 when viewed from the front end of the plunger. In fig. 19, for convenience of explanation, the description of the plurality of plungers and the plunger row including the plurality of plungers is also omitted.
As shown in the plan view of fig. 19, the conveyance drive mechanism 60 of embodiment 4 is characterized by further comprising a fourth conveyance drive shaft 63d located between the first conveyance drive shaft 63a and the second conveyance drive shaft 63 b.
As shown in the plan view of fig. 19, in the transmission drive mechanism 60 according to embodiment 4, the center 631c of the third transmission drive shaft 63c and the center 631d of the fourth transmission drive shaft 63d are located at positions other than on the straight line 632 passing through the center 631a of the first transmission drive shaft 63a and the center 631b of the second transmission drive shaft 63 b. Therefore, in the conveyance drive mechanism 60 according to embodiment 4, a stable elevating operation of the plunger unit 61 can be realized.
In order to realize a more stable lifting operation of the plunger unit 61, as shown in the plan view of fig. 19, the following configuration may be adopted: a straight line 632 passing through the centers 631a and 631b of the first and second transmission drive shafts 63a and 63b intersects a straight line 633 passing through the centers 631c and 631d of the third and fourth transmission drive shafts 63c and 63 d.
In order to realize a more stable elevating operation of the plunger unit 61, as shown in the plan view of fig. 19, the center 631d of the fourth transmission drive shaft 63d may be located in the inner region R5 of the plunger unit main body 65 in the X-axis direction.
As shown in the plan view of fig. 19, in the transport drive mechanism 60 according to embodiment 4, the center 631b of the second transport drive shaft 63b and the center 631d of the fourth transport drive shaft 63d are located in the region R1, and the center 631a of the first transport drive shaft 63a and the center 631c of the third transport drive shaft 63c are located in the region R2.
The description of embodiment 4 other than the above is the same as embodiments 1 to 3, and therefore the description is omitted.
< embodiment 5 >
Fig. 20 is a schematic plan view of the conveyance drive mechanism 60 according to embodiment 5. Fig. 20 is a schematic plan view of the conveyance drive mechanism 60 of embodiment 5 when viewed from the front end of the plunger. Note that, in fig. 20, for convenience of explanation, descriptions of the plurality of plungers and the plunger row including the plurality of plungers are also omitted.
As shown in the plan view of fig. 20, the transmission drive mechanism 60 of embodiment 5 is characterized by also including a fourth transmission drive shaft 63d between the first transmission drive shaft 63a and the second transmission drive shaft 63 b.
As shown in the plan view of fig. 20, in the transmission drive mechanism 60 according to embodiment 5, the center 631c of the third transmission drive shaft 63c and the center 631d of the fourth transmission drive shaft 63d are located at positions other than on the straight line 632 passing through the center 631a of the first transmission drive shaft 63a and the center 631b of the second transmission drive shaft 63 b. Therefore, in the conveyance drive mechanism 60 according to embodiment 4, a stable elevating operation of the plunger unit 61 can be realized.
As shown in the plan view of fig. 20, in the transport drive mechanism 60 according to embodiment 5, the center 631a of the first transport drive shaft 63a and the center 631c of the third transport drive shaft 63c are located in the region R1, and the center 631b of the second transport drive shaft 63b and the center 631d of the fourth transport drive shaft 63d are located in the region R2.
The description of embodiment 5 other than the above is the same as embodiments 1 to 4, and therefore the description is omitted.
While the embodiments have been described above, it is also intended to appropriately combine the respective components of the embodiments from the beginning.
The embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined not by the description but by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

Claims (19)

1. A transport drive mechanism, comprising:
a transmission drive shaft; and
a plunger unit on the transfer drive shaft,
the transmission drive shaft includes at least: a first transmission drive shaft, a second transmission drive shaft and a third transmission drive shaft,
the plunger unit comprises a plurality of plungers and a plunger unit body,
the plurality of plungers constitute a plunger row extending in a first direction,
each front end of the plurality of plungers is located outside the plunger unit body,
the first transmission drive shaft, the third transmission drive shaft and the second transmission drive shaft are located in this order in the first direction,
a center of the third transmission drive shaft is located at a position other than on a straight line passing through a center of the first transmission drive shaft and a center of the second transmission drive shaft in a plan view viewed from the front end of the plunger.
2. The transport drive mechanism of claim 1,
the plunger rows are single or multiple rows.
3. The transport drive mechanism of claim 2,
the single column and the plurality of columns are configured to be interchangeable.
4. The conveyance drive mechanism according to claim 2 or 3,
the column of plungers is the single column,
in the plan view, the plunger row is located in the first region of two regions, i.e., a first region and a second region, divided by a center line bisecting a width of the plunger unit body in a second direction different from the first direction.
5. The transport drive mechanism of claim 4,
in the plan view, the center of the third transmission drive shaft is located in the first region, and the centers of the first transmission drive shaft and the second transmission drive shaft are located in the second region.
6. The conveyance drive mechanism according to claim 2 or 3,
the column of plungers is the plurality of columns,
in the plan view, the plunger rows are arranged in a second direction different from the first direction to constitute the plurality of rows.
7. The transport drive mechanism of claim 6,
a part of the plunger rows constituting the plurality of rows is located in the first area of two areas, namely, a first area and a second area, divided by a center line bisecting the width of the plunger unit body in the second direction, and another part of the plunger rows constituting the plurality of rows is located in the second area.
8. The transport drive mechanism of claim 7,
in the plan view, the center of the third transmission drive shaft is located in the first region, and the centers of the first transmission drive shaft and the second transmission drive shaft are located in the second region.
9. The conveyance drive mechanism according to any one of claims 1 to 8,
the center of the first transmission drive shaft is located at one of outer side regions of the plunger unit body in the first direction in the plan view.
10. The transport drive mechanism of claim 9,
the center of the second transmission drive shaft is located at another outside area of the plunger unit body in the first direction in the plan view.
11. The conveyance drive mechanism according to claim 9 or 10,
the center of the third transmission drive shaft is located in a region inside the plunger unit body in the first direction in the plan view.
12. The conveyance drive mechanism of any one of claims 1 to 11, further comprising:
a fourth transfer drive shaft located between the first transfer drive shaft and the second transfer drive shaft,
a center of the fourth transmission drive shaft is located at a position other than on the straight line passing through the center of the first transmission drive shaft and the center of the second transmission drive shaft in the plan view.
13. The transport drive mechanism of claim 12,
in the plan view, the straight line passing through the centers of the first and second transmission drive shafts intersects with a straight line passing through the centers of the third and fourth transmission drive shafts.
14. The conveyance drive mechanism according to claim 12 or 13,
the center of the fourth transmission drive shaft is located in a region inside the plunger unit body in the first direction in the plan view.
15. The transfer drive mechanism of any one of claims 1 to 14, further comprising a plunger unit support plate between the transfer drive shaft and the plunger unit.
16. A resin-forming apparatus, comprising:
the transfer drive mechanism, the forming die, and the clamping mechanism according to any one of claims 1 to 15,
the molding die is configured to be capable of transferring a resin to a cavity of the molding die by the plunger of the transfer drive mechanism,
the mold clamping mechanism is configured to be capable of clamping the molding die.
17. The resin molding apparatus according to claim 16, wherein the cavity is configured to be located only on a single side of the plunger.
18. The resin molding apparatus according to claim 16, wherein the cavity is configured to be located on both sides of the plunger.
19. A method for manufacturing a resin molded product using the resin molding apparatus according to any one of claims 16 to 18, comprising:
a step of providing a molding object in the molding die;
closing the molding dies;
performing resin molding on the object to be molded; and
and opening the forming die.
CN201980070701.3A 2018-11-21 2019-06-20 Transfer drive mechanism, resin molding apparatus, and method for manufacturing resin molded product Active CN112912221B (en)

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JP2018-218026 2018-11-21
JP2018218026A JP6923502B2 (en) 2018-11-21 2018-11-21 Transfer drive mechanism, resin molding device and manufacturing method of resin molded products
PCT/JP2019/024512 WO2020105209A1 (en) 2018-11-21 2019-06-20 Transfer drive mechanism, resin molding device, and method for manufacturing resin molded body

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TW202019658A (en) 2020-06-01
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CN112912221A (en) 2021-06-04
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WO2020105209A9 (en) 2020-11-05
KR102587358B1 (en) 2023-10-12

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