WO2009065319A1 - Machine d'injection à deux étages - Google Patents

Machine d'injection à deux étages Download PDF

Info

Publication number
WO2009065319A1
WO2009065319A1 PCT/CN2008/072605 CN2008072605W WO2009065319A1 WO 2009065319 A1 WO2009065319 A1 WO 2009065319A1 CN 2008072605 W CN2008072605 W CN 2008072605W WO 2009065319 A1 WO2009065319 A1 WO 2009065319A1
Authority
WO
WIPO (PCT)
Prior art keywords
injection
tube
piston rod
screw
pipe
Prior art date
Application number
PCT/CN2008/072605
Other languages
English (en)
Chinese (zh)
Inventor
Chih-Shiang Han
Original Assignee
Lu, Hsaio-Ting
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lu, Hsaio-Ting filed Critical Lu, Hsaio-Ting
Publication of WO2009065319A1 publication Critical patent/WO2009065319A1/fr

Links

Classifications

    • 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
    • B29C45/54—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston and plasticising screw
    • B29C45/542—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston and plasticising screw using an accumulator between plasticising and injection unit, e.g. for a continuously operating plasticising screw

Definitions

  • the invention relates to a two-stage injection mechanism on an injection molding machine.
  • the material of the two-stage injection mechanism on the existing injection molding machine is divided into a screw tube with a screw and a injection tube with a piston.
  • the front end of the screw tube is connected to the front end of the piston chamber of the injection tube through a passage.
  • the injection tube has a nozzle at the front end and a hydraulic cylinder at the rear of the piston.
  • the material of the end face of the material is carbonized.
  • the repeated movement of the piston tends to wear the inner wall of the material tube.
  • the piston chamber is sealed by the piston and the wall of the material tube.
  • the material tube and the piston are used. In a short period of time, overhaul is required, and the fitting size of the piston and the inner wall of the material pipe is corrected, and the use cost is greatly increased.
  • the piston needs to be sealed to the inner wall of the tube, and the injection speed is slow. The piston can only be pushed in the tube at a low speed, otherwise the inner wall of the tube will be scratched.
  • the present invention solves the above-mentioned shortcomings of the prior art, and provides a two-stage injection mechanism that avoids carbonization, durability, and rapid injection speed of materials in the material pipe.
  • the two-stage injection mechanism of the present invention comprises a screw tube and an injection with a screw installed therein
  • the feed pipe, the front end of the screw material pipe is connected to the injection pipe through a communication pipe, the communication pipe is provided with a one-way valve, the screw is connected with a rotary drive mechanism, and the front end of the injection pipe is equipped with a nozzle, which is characterized in that:
  • the rear part is provided with an annular support seat, the piston rod is slidably disposed in the support seat, the piston rod is sealingly engaged with the support seat; there is a gap between the piston rod and the wall surface of the injection tube, and the piston rod is connected with the push cylinder;
  • the material inlet of the tube is located at the front end of the support.
  • piston rod and the support seat are made of a self-lubricating material.
  • the piston rod surface is carbonized to ensure lubrication to prevent wear.
  • the material inlet of the injection pipe is located at the front end of the support pipe. After the material enters the injection pipe, the material flows along the gap between the piston rod and the pipe wall to the cavity at the front of the injection pipe, and the piston rod is gradually pushed back, and after the material is filled in sufficient amount, the material is pushed.
  • the cylinder is activated, pushing the piston rod forward to inject liquid material into the mold through the nozzle.
  • the injection tube of the present invention is fed in a backward manner, which ensures that there is no material dead angle and can effectively prevent carbonization of the material. Secondly, there is no friction between the piston rod and the pipe wall, and no sealing is required. On the one hand, the machining accuracy of the pipe wall is reduced, on the other hand, the wear of the pipe wall is eliminated, the service life of the pipe pipe is prolonged, and frequent overhaul can be eliminated. Reduce maintenance costs and increase production efficiency. Finally, the present invention also ensures that the tube wall is not worn when the injection speed is increased.
  • the invention has the advantages of: avoiding carbonization, durability and rapid injection speed of the material in the material pipe. (4) Description of the drawings
  • Figure 1 is a schematic view of the structure of the present invention
  • Figure 2 is a partial enlarged view of Figure 1 (5) Specific implementation methods
  • the two-stage injection mechanism of the present invention comprises a screw material tube 4 and an injection material tube 8 in which the screw 3 is built.
  • the front end of the screw material tube 3 is connected to the injection material tube 8 through a communication tube 6, and the communication tube 6 is provided with a one-way direction.
  • the valve 4 is connected to the screw 4 with a rotary drive mechanism, and the front end of the injection tube 8 is provided with a nozzle 9.
  • the rotary drive mechanism is composed of a servo motor 2 and a speed reducer 1.
  • the check valve is a valve that is pushed by the check valve 5.
  • the rear portion of the injection tube 8 is provided with an annular bearing seat 11 in which the piston rod 10 is slidably disposed, and the piston rod 10 is sealingly fitted with the bearing seat 11; the wall surface of the piston rod 10 and the injection tube 8 There is a gap between the piston rod 10 and the push cylinder 12; the material input port 7 of the injection tube 8 is located at the front end of the support base 11.
  • the piston rod 10 and the support seat 11 are made of a self-lubricating material.
  • the surface of the piston rod 10 is carbonized to ensure lubrication and wear.
  • the material inlet of the injection pipe is located at the front end of the support pipe. After the material enters the injection pipe, the material flows along the gap between the piston rod and the pipe wall to the cavity at the front of the injection pipe, and the piston rod is gradually pushed back, and after the material is filled in sufficient amount, the material is pushed.
  • the cylinder is activated, pushing the piston rod forward to inject liquid material into the mold through the nozzle.
  • the injection tube of the present invention is fed in a backward manner, which ensures that there is no material dead angle and can effectively prevent carbonization of the material. Secondly, there is no friction between the piston rod and the pipe wall, and no sealing is required. On the one hand, the machining accuracy of the pipe wall is reduced, on the other hand, the wear of the pipe wall is eliminated, the service life of the pipe pipe is prolonged, and frequent overhaul can be eliminated. Reduce maintenance costs and increase production efficiency. Finally, the invention can also improve Ensure that the pipe wall is not worn at the injection speed.

Abstract

L'invention porte sur une machine d'injection à deux étages qui comporte une vis (4) reliée à un organe d'entraînement en rotation ; un cylindre de vis (3) et un cylindre d'injection (8), l'extrémité avant du cylindre de vis (3) communiquant avec le cylindre d'injection (8) par un tuyau de communication (6) muni d'un clapet anti-retour et d'une tige-piston (10) montée de façon coulissante dans le support annulaire (11) situé dans l'extrémité arrière du cylindre d'injection (8), l'ouverture d'entrée (7) du cylindre d'injection (8) étant formée devant le support annulaire (11).
PCT/CN2008/072605 2007-11-02 2008-10-07 Machine d'injection à deux étages WO2009065319A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710156640.1 2007-11-02
CN2007101566401A CN101422955B (zh) 2007-11-02 2007-11-02 二段式射出机构

Publications (1)

Publication Number Publication Date
WO2009065319A1 true WO2009065319A1 (fr) 2009-05-28

Family

ID=40613930

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/072605 WO2009065319A1 (fr) 2007-11-02 2008-10-07 Machine d'injection à deux étages

Country Status (2)

Country Link
CN (1) CN101422955B (fr)
WO (1) WO2009065319A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102241115A (zh) * 2010-05-12 2011-11-16 浙江德玛克机械有限公司 注塑机改进型注射杆
CN104494074B (zh) * 2014-11-05 2016-10-05 泰瑞机器股份有限公司 一种预塑化式注塑装置
CN104494075B (zh) * 2014-12-26 2017-01-11 广东福能精密机械有限公司 自洁柱塞式注射装置及自洁柱塞式注塑机
CN107672117A (zh) * 2017-11-06 2018-02-09 威塑机械科技（上海）有限公司 注塑机及成型设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06166072A (ja) * 1992-12-02 1994-06-14 Matsushita Electric Ind Co Ltd 射出成形機
JPH07108575A (ja) * 1993-10-15 1995-04-25 Mitsubishi Heavy Ind Ltd タンデム型射出成形機
JPH07276419A (ja) * 1994-04-11 1995-10-24 Mitsubishi Heavy Ind Ltd タンデム型射出成形機
CN1198122A (zh) * 1995-09-29 1998-11-04 瑞典诺罗尔普拉斯特马斯金纳公司 带进料筒的注塑机
CN201124557Y (zh) * 2007-11-02 2008-10-01 联塑(杭州)机械有限公司 二段式射出机构

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW259748B (fr) * 1994-03-18 1995-10-11 Nissei Zyushi Kogyo Kk
DE10066145B4 (de) * 2000-04-14 2009-01-29 Kraussmaffei Technologies Gmbh Verfahren zum Betrieb einer Spritzgießmaschine mit kontinuierlich arbeitender Plastifiziereinheit
CN1307035C (zh) * 2004-01-14 2007-03-28 刘津平 长纤维填充增强塑料注射成型方法及装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06166072A (ja) * 1992-12-02 1994-06-14 Matsushita Electric Ind Co Ltd 射出成形機
JPH07108575A (ja) * 1993-10-15 1995-04-25 Mitsubishi Heavy Ind Ltd タンデム型射出成形機
JPH07276419A (ja) * 1994-04-11 1995-10-24 Mitsubishi Heavy Ind Ltd タンデム型射出成形機
CN1198122A (zh) * 1995-09-29 1998-11-04 瑞典诺罗尔普拉斯特马斯金纳公司 带进料筒的注塑机
CN201124557Y (zh) * 2007-11-02 2008-10-01 联塑(杭州)机械有限公司 二段式射出机构

Also Published As

Publication number Publication date
CN101422955A (zh) 2009-05-06
CN101422955B (zh) 2012-08-22

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