CN201124557Y - Two-stage emission mechanism - Google Patents
Two-stage emission mechanism Download PDFInfo
- Publication number
- CN201124557Y CN201124557Y CNU2007201918707U CN200720191870U CN201124557Y CN 201124557 Y CN201124557 Y CN 201124557Y CN U2007201918707 U CNU2007201918707 U CN U2007201918707U CN 200720191870 U CN200720191870 U CN 200720191870U CN 201124557 Y CN201124557 Y CN 201124557Y
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- CN
- China
- Prior art keywords
- piston rod
- material pipe
- pipe
- injection material
- material tube
- 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 - Lifetime
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Abstract
The utility model provides a two-stage injection mechanism. The mechanism comprises a screw material tube where a screw is arranged and an injecting material tube. The front end of the screw material tube is connected with the injecting material tube through a connecting tube. A one-way valve is arranged on the connecting tube. The screw is connected with a rotation driving mechanism; a nozzle is arranged on the front end of the injecting material tube, a ring bearing support is arranged in the rear part of the injecting material tube. A piston rod is arranged in the bearing support in sliding manner, the piston rod is in a sealing combination with the bearing support. A gap is formed between the piston rod and the wall surface of the injecting material tube, the piston is connected with a pushing cylinder; the material inlet of the injecting material tube is positioned on the front end of the bearing support. The mechanism has the advantages of avoidance of material carbonization in the material tube, durability and high injection speed.
Description
(1) technical field
The utility model 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 by 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, total Hui 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, material is herein always stayed on the piston end surface, causes the material carbonization of material end face thus.Secondly, inside pipe wall is expected in the wearing and tearing easily of moving repeatedly 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 utility model 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 described in the utility model comprises, the front end of screw rod material pipe is by being connected to injection material pipe a communicating pipe, check valve was housed 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 make.
Described piston rod surface is through the sliding Mo Damage that prevents of carbonization treatment Yi Bao Run.
The material inlet of injection material pipe is positioned at the supporting base front end, material enters the gap flow direction injection material pipe anterior cavity of injection material pipe back along piston rod and tube wall, gradually piston rod is postponed, after waiting to flow into the material capacity, the promotion cylinder starts, and 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 utility model 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.At last, the utility model can also improve not Bei Mo Damage of injection Su Du Time Bao tube wall.
The utility model has the advantages that: avoid material carbonization in material pipe, durable, injection speed is fast.
(4) description of drawings
Fig. 1 is a structural representation of the present utility model
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 described in the utility model comprises, the front end of screw rod material pipe 3 is by 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 and supporting base 11 adopt self-lubricating material to make.
Wear and tear through sliding the preventing of carbonization treatment Yi Bao Run in described piston rod 10 surfaces.
The material inlet of injection material pipe is positioned at the supporting base front end, material enters the gap flow direction injection material pipe anterior cavity of injection material pipe back along piston rod and tube wall, gradually piston rod is postponed, after waiting to flow into the material capacity, the promotion cylinder starts, and 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 utility model 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.At last, the utility model can also improve not Bei Mo Damage of injection Su Du Time Bao tube wall.
The described content of this specification embodiment only is enumerating the way of realization of utility model design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (3)
1. two-segment type ejection device, the screw rod material pipe of loading screw and injection material pipe in comprising, the front end of screw rod material pipe is by being connected to injection material pipe 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 make.
3. two-segment type ejection device as claimed in claim 1 or 2 is characterized in that: described piston rod surface is through carbonization treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201918707U CN201124557Y (en) | 2007-11-02 | 2007-11-02 | Two-stage emission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201918707U CN201124557Y (en) | 2007-11-02 | 2007-11-02 | Two-stage emission mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201124557Y true CN201124557Y (en) | 2008-10-01 |
Family
ID=39997973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201918707U Expired - Lifetime CN201124557Y (en) | 2007-11-02 | 2007-11-02 | Two-stage emission mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201124557Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009065319A1 (en) * | 2007-11-02 | 2009-05-28 | Lu, Hsaio-Ting | Two-stage injection machine |
| CN104500512A (en) * | 2013-10-12 | 2015-04-08 | 国家电网公司 | Cluster line squaring collector and electric pole fixing structure |
-
2007
- 2007-11-02 CN CNU2007201918707U patent/CN201124557Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009065319A1 (en) * | 2007-11-02 | 2009-05-28 | Lu, Hsaio-Ting | Two-stage injection machine |
| CN101422955B (en) * | 2007-11-02 | 2012-08-22 | 联塑(杭州)机械有限公司 | Two-segment type ejection device |
| CN104500512A (en) * | 2013-10-12 | 2015-04-08 | 国家电网公司 | Cluster line squaring collector and electric pole fixing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20081001 Effective date of abandoning: 20071102 |