CN101422955B - Two-segment type ejection device - Google Patents

Two-segment type ejection device Download PDF

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Publication number
CN101422955B
CN101422955B CN2007101566401A CN200710156640A CN101422955B CN 101422955 B CN101422955 B CN 101422955B CN 2007101566401 A CN2007101566401 A CN 2007101566401A CN 200710156640 A CN200710156640 A CN 200710156640A CN 101422955 B CN101422955 B CN 101422955B
Authority
CN
China
Prior art keywords
material pipe
injection
piston rod
pipe
supporting base
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CN2007101566401A
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Chinese (zh)
Other versions
CN101422955A (en
Inventor
韩志翔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Union Plastic Hangzhou Machinery Co Ltd
Original Assignee
Union Plastic Hangzhou Machinery Co Ltd
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 Union Plastic Hangzhou Machinery Co Ltd filed Critical Union Plastic Hangzhou Machinery Co Ltd
Priority to CN2007101566401A priority Critical patent/CN101422955B/en
Priority to PCT/CN2008/072605 priority patent/WO2009065319A1/en
Publication of CN101422955A publication Critical patent/CN101422955A/en
Application granted granted Critical
Publication of CN101422955B publication Critical patent/CN101422955B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/46Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/53Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
    • B29C45/54Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston and plasticising screw
    • B29C45/542Means 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

Abstract

The invention relates to a two-part form injection mechanism, which comprises a screw material pipe filled with screws and an injection material pipe. The front end of the screw material pipe is connected to the injection material pipe through a communicating pipe, which is provided with a check valve; the screw is connected with a rotation driving mechanism, the front end of the injection material pipe is filled with a nozzle and the back part is provided with a circular mounting base, in which a piston rod can be arranged in a sliding way and matches with the mounting base in a sealed way; a gap exists between the piston rod and the wall of the injection material, the piston rod is connected with a pushing cylinder; and the material input port of the injection material pipe is at the front end of the mounting base. The two-part form injection mechanism has the advantages of the avoidance of material carbonization in the material pipes, durability and fast injection speed.

Description

Two-segment type ejection device
(1) technical field
The present invention relates to the two-segment type ejection device on a kind of injection machine.
(2) background technology
The screw rod material pipe of loading screw and the injection material pipe of interior dress piston in the material pipe of the two-segment type ejection device on the existing injection machine is divided into, the front end of screw rod material pipe are connected to the front end of the plunger shaft of injection material pipe through a passage.The front end of injection material pipe has nozzle, and the piston rear portion connects a hydraulic cylinder.Plunger shaft relies on the pressure of liquid material that piston is retreated when charging, to increase the volume of plunger shaft.Because when injection, feed liquid is not penetrated fully, federation's residual material on piston end surface; And that the charging of plunger shaft is a front end is pouring-in, therefore, forms the material dead angle near the piston end surface; The material is here always stayed on the piston end surface, causes the material carbonization of material end face thus.Secondly, the repeated moving easy abrasion material inside pipe wall of piston, plunger shaft relies on piston and material tube wall to seal on the other hand; Must there be accurate dimensions to cooperate between the two; Processing request is very high, and thus, material pipe and piston use the not long time just to need overhaul; Correct piston and the fit dimension of expecting inside pipe wall, use cost heightens.At last, piston need seal with the material inside pipe wall, also causes injection speed slow, and piston can only advance in the material pipe by low speed, otherwise can scratch material inside pipe wall.
(3) summary of the invention
The present invention will solve the above-mentioned shortcoming of prior art, and a kind of material carbonization in material pipe, durable, two-segment type ejection device that injection speed is fast avoided is provided.
The screw rod material pipe of loading screw and injection material pipe in two-segment type ejection device of the present invention comprises; The front end of screw rod material pipe is equipped with check valve through being connected to injection material pipe a communicating pipe on communicating pipe, screw rod is connected with rotary drive mechanism; The front end of injection material pipe is equipped with nozzle; It is characterized in that: the rear portion of injection material pipe is provided with the ring-shaped bearing seat, and piston rod is slidably disposed in the described supporting base, and piston rod and supporting base are sealed and matched; Gapped between the wall of piston rod and injection material pipe, piston rod connects the promotion cylinder; The material input port of injection material pipe is positioned at the front end of described supporting base.
Further, but described piston rod and supporting base adopt self-lubricating material to process.
The piston rod surface after carbonization process to ensure lubrication to prevent wear and tear.
The material inlet of injection material pipe is positioned at the supporting base front end; Material gets into injection and expects that the pipe back flows to the cavity that injection expects that pipe is anterior along the gap of piston rod and tube wall; Gradually piston rod is postponed; After waiting to flow into the material capacity, promote cylinder and start, the promotion piston rod advances liquid material is injected in the mould through nozzle.
Compared with prior art, the enter material way of injection material pipe of the present invention is a doggy style, has guaranteed not exist the material dead angle, can prevent the material carbonization effectively.Secondly, there are not friction in piston rod and tube wall, do not need sealing, have reduced the requirement of tube wall machining accuracy on the one hand; Eliminate the wearing and tearing of tube wall on the other hand, prolonged material and managed service life, can also exempt frequent overhaul; Reduce maintenance cost, enhance productivity.Finally, the present invention can also be guaranteed in the wall to increase the injection speed is not being worn.
Advantage of the present invention is: avoid material carbonization in material pipe, durable, injection speed is fast.
(4) description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is the partial enlarged drawing of Fig. 1
(5) specific embodiment
With reference to accompanying drawing:
The screw rod material pipe 4 of loading screw 3 and injection material pipe 8 in two-segment type ejection device of the present invention comprises; The front end of screw rod material pipe 3 is through being connected to injection material pipe 8 communicating pipe 6; On communicating pipe 6 check valve is housed, screw rod 4 is connected with rotary drive mechanism, and the front end of injection material pipe 8 is equipped with nozzle 9.Described rotary drive mechanism is made up of servomotor 2 and reductor 1.Described check valve is the valve that is promoted by check (non-return) valve 5.
The rear portion of injection material pipe 8 is provided with ring-shaped bearing seat 11, and piston rod 10 is slidably disposed in the described supporting base 11, and piston rod 10 is sealed and matched with supporting base 11; Gapped between the wall of piston rod 10 and injection material pipe 8, piston rod 10 connects promotion cylinder 12; The material input port 7 of injection material pipe 8 is positioned at the front end of described supporting base 11.
But described piston rod 10 adopts self-lubricating material to process with supporting base 11.
The piston rod 10 surface after carbonization process to ensure lubrication to prevent wear and tear.
The material inlet of injection material pipe is positioned at the supporting base front end; Material gets into injection and expects that the pipe back flows to the cavity that injection expects that pipe is anterior along the gap of piston rod and tube wall; Gradually piston rod is postponed; After waiting to flow into the material capacity, promote cylinder and start, the promotion piston rod advances liquid material is injected in the mould through nozzle.
Compared with prior art, the enter material way of injection material pipe of the present invention is a doggy style, has guaranteed not exist the material dead angle, can prevent the material carbonization effectively.Secondly, there are not friction in piston rod and tube wall, do not need sealing, have reduced the requirement of tube wall machining accuracy on the one hand; Eliminate the wearing and tearing of tube wall on the other hand, prolonged material and managed service life, can also exempt frequent overhaul; Reduce maintenance cost, enhance productivity.Finally, the present invention can also be guaranteed in the wall to increase the injection speed is not being worn.
The described content of this specification embodiment only is enumerating the way of realization of inventive concept; Should not being regarded as of protection scope of the present invention only limits to the concrete form that embodiment states, protection scope of the present invention also reach in those skilled in the art conceive according to the present invention the equivalent technologies means that can expect.

Claims (3)

1. two-segment type ejection device comprises that the screw rod material pipe of interior loading screw expects to manage with injection, and the front end of screw rod material pipe is injected the material pipe through being connected to a communicating pipe; Check valve was housed on communicating pipe; Screw rod is connected with rotary drive mechanism, and the front end of injection material pipe is equipped with nozzle, it is characterized in that: the rear portion of injection material pipe is provided with the ring-shaped bearing seat; Piston rod is slidably disposed in the described supporting base, and piston rod and supporting base are sealed and matched; Gapped between the wall of piston rod and injection material pipe, piston rod connects the promotion cylinder; The material input port of injection material pipe is positioned at the front end of described supporting base.
2. two-segment type ejection device as claimed in claim 1 is characterized in that: but described piston rod and supporting base adopt self-lubricating material to process.
3. according to claim 1 or claim 2 two-segment type ejection device, it is characterized in that: described piston rod surface is through carbonization treatment.
CN2007101566401A 2007-11-02 2007-11-02 Two-segment type ejection device Expired - Fee Related CN101422955B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2007101566401A CN101422955B (en) 2007-11-02 2007-11-02 Two-segment type ejection device
PCT/CN2008/072605 WO2009065319A1 (en) 2007-11-02 2008-10-07 Two-stage injection machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2007101566401A CN101422955B (en) 2007-11-02 2007-11-02 Two-segment type ejection device

Publications (2)

Publication Number Publication Date
CN101422955A CN101422955A (en) 2009-05-06
CN101422955B true CN101422955B (en) 2012-08-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2007101566401A Expired - Fee Related CN101422955B (en) 2007-11-02 2007-11-02 Two-segment type ejection device

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CN (1) CN101422955B (en)
WO (1) WO2009065319A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102241115A (en) * 2010-05-12 2011-11-16 浙江德玛克机械有限公司 Modified injection rod of injection molding machine
CN104494074B (en) * 2014-11-05 2016-10-05 泰瑞机器股份有限公司 A kind of Preplasticizing injection moulding apparatus
CN104494075B (en) * 2014-12-26 2017-01-11 广东福能精密机械有限公司 Self-cleaning plunger type injection device and self-cleaning plunger type injection molding machine
CN107672117A (en) * 2017-11-06 2018-02-09 威塑机械科技(上海)有限公司 Injection machine and former

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0672512A2 (en) * 1994-03-18 1995-09-20 Nissei Plastic Industrial Co., Ltd. Preplasticizing type injection apparatus
WO2001078964A1 (en) * 2000-04-14 2001-10-25 Krauss-Maffei Kunststofftechnik Gmbh Injection unit for injection molding machines with a continuos plasticizing unit
CN1557619A (en) * 2004-01-14 2004-12-29 刘津平 Method and device for long fibre filling reinforced plastic injection moulding
CN201124557Y (en) * 2007-11-02 2008-10-01 联塑(杭州)机械有限公司 Two-stage emission mechanism

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06166072A (en) * 1992-12-02 1994-06-14 Matsushita Electric Ind Co Ltd Injection molding machine
JP3457716B2 (en) * 1993-10-15 2003-10-20 三菱重工業株式会社 Tandem injection molding machine
JPH07276419A (en) * 1994-04-11 1995-10-24 Mitsubishi Heavy Ind Ltd Tandem-type injection molding machine
SE9503362L (en) * 1995-09-29 1997-03-30 Svenska Norol Plastmaskiner Ab Injection molding machine with charging cylinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0672512A2 (en) * 1994-03-18 1995-09-20 Nissei Plastic Industrial Co., Ltd. Preplasticizing type injection apparatus
WO2001078964A1 (en) * 2000-04-14 2001-10-25 Krauss-Maffei Kunststofftechnik Gmbh Injection unit for injection molding machines with a continuos plasticizing unit
CN1557619A (en) * 2004-01-14 2004-12-29 刘津平 Method and device for long fibre filling reinforced plastic injection moulding
CN201124557Y (en) * 2007-11-02 2008-10-01 联塑(杭州)机械有限公司 Two-stage emission mechanism

Also Published As

Publication number Publication date
WO2009065319A1 (en) 2009-05-28
CN101422955A (en) 2009-05-06

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ASS Succession or assignment of patent right

Owner name: YINGJIE (HANGZHOU) MACHINERY CO., LTD.

Free format text: FORMER OWNER: LIANSU (HANGZHOU) MACHINERY CO., LTD.

Effective date: 20150703

Free format text: FORMER OWNER: LU XIAOTING

Effective date: 20150703

C41 Transfer of patent application or patent right or utility model
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Effective date of registration: 20150703

Address after: Hangzhou City, Zhejiang province 310053 Binjiang District River Street Road 688 Building 2 shore B building six room 632

Patentee after: Shengguo (Hangzhou) Machinery Co. Ltd.

Address before: 311305 Zhejiang city in Ling'an Province Economic Development Zone No. 61 South

Patentee before: Union Plastic (Hangzhou) Machinery Co., Ltd.

Patentee before: Lu Xiaoting

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20180313

Address after: Ling'an City, Hangzhou City, Zhejiang province 311305 Economic Development Zone No. 61 South

Patentee after: Union Plastic (Hangzhou) Machinery Co., Ltd.

Address before: Hangzhou City, Zhejiang province 310053 Binjiang District River Street Road 688 Building 2 shore B building six room 632

Patentee before: Shengguo (Hangzhou) Machinery Co. Ltd.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120822

Termination date: 20191102

CF01 Termination of patent right due to non-payment of annual fee