JP2021133684A - 成形材料供給装置およびその成形材料供給方法 - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 26
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- 239000007924 injection Substances 0.000 claims description 31
- 238000007599 discharging Methods 0.000 claims description 27
- 230000006837 decompression Effects 0.000 claims description 21
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- 230000001105 regulatory effect Effects 0.000 claims description 11
- 229920002379 silicone rubber Polymers 0.000 claims description 11
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- 238000004073 vulcanization Methods 0.000 description 13
- 238000002360 preparation method Methods 0.000 description 7
- 244000043261 Hevea brasiliensis Species 0.000 description 4
- 229920003052 natural elastomer Polymers 0.000 description 4
- 229920001194 natural rubber Polymers 0.000 description 4
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- 239000005061 synthetic rubber Substances 0.000 description 4
- 238000000071 blow moulding Methods 0.000 description 3
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- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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- B29C45/53—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
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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
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- B29C45/53—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
- B29C45/535—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston using two or more cooperating injection rams, e.g. coaxially or alternately operating rams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
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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
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
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- Engineering & Computer Science (AREA)
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- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
2 第1排出部
3 第2排出部
4 制御装置
5 減圧装置
6 各種センサ
6a 位置センサ
6b 位置センサ
10 第1排出部材
10a プランジャ
10b スクリュ
11 第1排出駆動装置
12 第1収容部
13 第1収容空間
13a 第1収容空間の開口部
14 第1排出孔
14a 第1排出孔の入口
14b 第1排出孔の出口
15 ダイス
15a ダイスの貫通孔
15b ダイス本体
15c ダイス取り付け部材
20 第2排出部材
21 第2排出駆動装置
22 第2収容部
23 第2収容空間
23a 第2収容空間の開口部
24 第2排出孔
24a 第2排出孔の入口
24b 第2排出孔の出口
25 排気孔
25a 排気口
26 開閉弁
27 弁体
28 付勢部材
29 規制部材
29a ピン部材
29b 引っ掛け部材
100 成形機
101 成形材料供給口
110 射出装置
111 可塑化シリンダ
112 可塑化スクリュ
113 混合シリンダ
114 混合スクリュ
115 射出シリンダ
116 射出プランジャ
212 供給孔
S 成形材料
G ガス
m 金型
Claims (14)
- 成形材料に混入しているガスを脱気しかつ脱気した前記成形材料を成形機の成形材料供給口に供給する成形材料供給装置であって、
第1排出部と第2排出部と制御装置とを備えて、
前記第1排出部は、
第1排出部材と、第1排出駆動装置と、第1収容部と、ダイスとを備えて、
前記第1排出駆動装置は、前記第1排出部材を駆動させて、
前記第1収容部は、前記第1排出部材を駆動可能に収容しかつ前記成形材料を収容する第1収容空間が形成されていて、前記第1収容空間と前記ダイスを連通する第1排出孔が形成されていて、
前記ダイスは、前記第1排出孔に取り付けられて、前記第1排出孔と前記第1収容部の外部とを連通する少なくとも1つの貫通孔が形成されていて、
前記第2排出部は、
第2排出部材と、第2排出駆動装置と、第2収容部とを備えて、
前記第2排出部材は、前記第1収容部と前記ダイスとを少なくとも有し、
前記第2排出駆動装置は、前記第2排出部材を前後に移動させて、
前記第2収容部は、前記第2排出部材を前後に移動可能に収容しかつ前記ダイスを通して排出される前記成形材料を前記第2排出部材の前方に収容する第2収容空間が形成されていて、前記第2収容空間と前記成形材料供給口を連通する第2排出孔が形成されていて、
前記制御装置は、
前記第1排出駆動装置および前記第2排出駆動装置に接続されていて、
前記第1排出駆動装置を制御して前記第1排出部材を駆動させて前記ダイスを通して前記第1収容空間の中の前記成形材料を前記第2収容空間の中に排出させて、
前記第2排出駆動装置を制御して前記第2排出部材を前進させて前記第2収容空間の中で脱気した前記成形材料を前記成形材料供給口から前記成形機に排出させている、
成形材料供給装置。 - 前記第2排出部は、外部と前記第2収容空間を連通しかつ前記第2収容空間に排気口が開口している少なくとも1つの排気孔が形成されている、
請求項1の成形材料供給装置。 - 前記排気孔は、前記第2排出部材に形成されていて、
前記第2排出部材は、前記排気孔を開閉する開閉弁を備えて、
前記開閉弁は、付勢部材と、規制部材と、弁体と、を備えて、
前記付勢部材は、前記第2排出部材と前記弁体の間に設けられて、前記弁体が前記第2排出部材に対して後退する方向に付勢力を発生して、
前記規制部材は、前記弁体が前記第2収容部に対して規制位置を超えて後退することを規制して、
前記弁体は、前記第2排出部材と一緒に前記第2収容部に対して前後方向に移動可能なときは前記付勢力によって前記第2収容空間の中から引っ込んで前記排気口を閉じ、前記規制位置に留まりかつ前記第2排出部材に対して相対的に前後方向に移動可能なときは前記付勢力に抗して前記第2収容空間の中に突き出でて前記排気口を開く、
請求項2の成形材料供給装置。 - 減圧装置を備えて、
前記排気孔は、前記第2収容空間と前記減圧装置を接続し、
前記減圧装置は、前記第2収容空間の中の気圧を減圧する、
請求項2の成形材料供給装置。 - 制御装置は、前記減圧装置に接続されていて、少なくとも前記ダイスを通して前記第1収容空間の中の前記成形材料を前記第2収容空間の中に排出させているときに、前記減圧装置を制御して、前記第2収容空間の中の気圧を減圧させている、
請求項4の成形材料供給装置。 - 前記制御装置は、
前記成形材料を前記第2収容空間の中に排出させる前に、前記第2排出駆動装置を制御して前記第2排出部材を所定の位置まで後退させている、
請求項1の成形材料供給装置。 - 前記第1排出部材は、プランジャであり、
前記第1排出駆動装置は、前記プランジャを前後に移動させて、
前記第1収容空間は、前記プランジャを前後に移動可能に収容し、前記成形材料を前記プランジャの前方に収容している、
請求項1の成形材料供給装置。 - 前記第1排出部材は、スクリュであり、
前記第1排出駆動装置は、前記スクリュを回転させて、
前記第1収容空間は、前記スクリュを回転可能に収容している、
請求項1の成形材料供給装置。 - 前記成形機は、射出成形機であり、
前記成形材料供給口は、可塑化スクリュを収容する可塑化シリンダ、混合スクリュを収容する混合シリンダ、インラインスクリュを収容する射出シリンダ、またはプランジャを収容する射出シリンダに形成されている、
請求項1の成形材料供給装置。 - 前記成形材料は、ミラブル型のシリコンゴムである、
請求項1の成形材料供給装置。 - 成形材料に混入しているガスを脱気しかつ脱気した前記成形材料を成形機の成形材料供給口に供給する成形材料供給方法であって、
第1収容部の第1収容空間の中に前記成形材料を供給する準備工程と、
少なくとも第1収容部およびダイスで構成されていてかつ第2収容部の第2収容空間の中で前後に移動可能に収容されている第2排出部材を前記第2収容部に対して所定の位置まで後退させる待機工程と、
前記第1収容空間の中で駆動可能に収容されている第1排出部材を駆動して、前記第1収容空間の中の前記成形材料を前記ダイスの貫通孔を通して前記第2収容空間の中でかつ前記第2排出部材の前方に排出する脱気工程と、
前記第2排出部材が前進して、脱気したあとの前記成形材料を前記第2収容空間から前記成形材料供給口に排出する供給工程と、を行う成形材料供給方法。 - 前記脱気工程は、減圧装置で前記第2収容空間の中の気圧を減圧する、
請求項11の成形材料供給方法。 - 前記待機工程は、前記第2排出部材を前記所定の位置まで後退させたあと減圧装置で前記第2収容空間の中の気圧を減圧する、
請求項11の成形材料供給方法。 - 前記成形材料は、ミラブル型のシリコンゴムである、
請求項11の成形材料供給方法。
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