CN105643874B - A kind of gas injection device for gas-powered bullet assisted injection molding process - Google Patents
A kind of gas injection device for gas-powered bullet assisted injection molding process Download PDFInfo
- Publication number
- CN105643874B CN105643874B CN201610044287.7A CN201610044287A CN105643874B CN 105643874 B CN105643874 B CN 105643874B CN 201610044287 A CN201610044287 A CN 201610044287A CN 105643874 B CN105643874 B CN 105643874B
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- China
- Prior art keywords
- gas
- gas injection
- bullet
- injection nozzle
- valve element
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Classifications
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of gas injection device for gas-powered bullet assisted injection molding process, mainly include：Valve body 2, reducing diameter high voltage gas-tpe fitting 4, SDA thin cylinders 5, air cylinder support 6, adjusting nut 7, cylinder connector 8, shaft coupling 9, flange 11, valve element 12, O-ring seal 14, gas injection nozzle 15.Valve body insertion is arranged between die and mould bases, is installed reliable and stable, is easy to transplanting；Gas injection nozzle 15 is hollow tubular, reduces gas injection pressure loss；The axis of gas injection nozzle 15 is consistent with mold cavity axis prime direction, it is ensured that bullet is penetrated between after departing from nozzle under pressed gas drives stably in the melt；Gas injection nozzle 15 can be changed on demand；It is enclosed on gas injection nozzle 15 and is realized to melten gel sealing using bullet；The hypomere for wrapping up gas injection nozzle 15 using sizing material realizes the reliable sealing to gas；The driving valve element of thin cylinder 5 is retreated, and realizes that gas injection is acted with extraction.Available for gas-powered bullet assisted injection molding process and similar technique.
Description
Technical field
The present invention relates to a kind of simple reliable gas injection device for gas-powered bullet Shooting Technique, available for gas
Drive bullet injection and the experiment and production of similar technique.
Background technology
Directly penetrate, gas drive different to form hollow principle in the melt using gas from gas aided injection mould technology
Ball aided injection mould technology of moving is to penetrate to obtain hollow product in the melt using pressed gas driving bullet, its hollow section
Depend primarily on the maximum cross-sectional shape and size of bullet；The plastic section of the technique is bigger, more complicated, wall thickness is thinner uniform
Hollow, therefore the technology opposing gas aided injection mould technology has its specific application prospect.In gas-powered bullet auxiliary
In Shooting Technique equipment, gas injection device is essential core component.The gas injection device used in gas aided injection mould technology
Generally air tube, installed in mold cavity dynamic model side.Gas covers minimum gap between gaseous core by air tube and enters die cavity, glue
Material can not be entered in air tube, and this just proposes higher requirement to the machining accuracy of air tube, adds difficulty of processing and manufacture
Cost, and there is larger pressure loss.In gas-powered bullet assisted injection molding process technology, bullet is before injecting glue
It is enclosed on air injection opening, pressed gas is reinjected after injecting glue to drive bullet to promote in sizing material, is that this is existing installed in mould
The gas-assisted injection molding process gas injection device of die cavity dynamic model side may not apply to gas-powered bullet assisted injection molding process.It is domestic
The outer design to such gas injection device is extremely rare, and technology is still immature.The design of gas injection device is auxiliary for gas-powered bullet
The successful application of Shooting Technique technology is helped to be particularly important.Existing gas-powered bullet aided injection mould gas injection device is usually set
A part for mould is counted into, moving up and down for air injection opening is realized using Angle Pin slide block structure.This apparatus structure is simple, but deposits
In problems with：Die manufacturing cost is high；Gas injection device does not have transplantability.
The content of the invention
The air tube that gas aided injection mould is used is arranged on die cavity side, it is impossible to meet gas-powered bullet aided injection mould skill
The technological requirement of art, the present invention provides a kind of simple reliable gas injection device for gas-powered bullet Shooting Technique, the dress
Put including plug 1, valve body 2, gasket seal 3, reducing diameter high voltage gas-tpe fitting 4, SDA thin cylinders 5, air cylinder support 6, regulation spiral shell
Mother 7, cylinder connector 8, shaft coupling 9, coupled axle-pin 10, flange 11, valve element 12, valve element stop screw 13, O-ring seal 14, gas injection
Nozzle 15.Reducing diameter high voltage gas-tpe fitting 4, flange 11 and the thread connection of valve body 2；Cylinder 5 is bolted on air cylinder support 6
On, air cylinder support is fixed by screws on valve body 2；Cylinder is connected by cylinder connector 8, shaft coupling 9, coupled axle-pin 10 and valve element 12
Connect；O-ring seal 14 is housed on valve element 12, is placed in valve body 2, it is ensured that the reliable sealing of gas；It is limited between valve element 12 and valve body 2
Position screw 13 carries out spacing and rotation stop；Valve design has hangers, is directly embedded between mould die and mould bases, it is ensured that peace
The reliability of dress, and it is easy to transplanting；The design of gas injection nozzle 15 uses hollow tubular, reduces the loss of gas injection pressure；
The cross sectional shape of gas injection nozzle 15 can be designed according to the cross sectional shape size of bullet, to adapt to the product of different cross section shape size
Shaping；Gas injection nozzle 15 uses thread connection with valve element 12, is conveniently replaceable；The axis of gas injection nozzle 15 and mold cavity axis prime direction
Unanimously, it is ensured that bullet is penetrated between after departing from nozzle under pressed gas drives stably in the melt；Gas injection nozzle 15 stretches into type
Cavity segment is divided into two sections, and epimere coordinates with bullet, bullet is fixed during injecting glue and logical into air-flow covered with melten gel is prevented using bullet
Road, is wrapped up during hypomere injecting glue by melten gel, it is ensured that reliable sealing during follow-up gas injection；The gas injection device drives valve by thin cylinder 5
Core forward-reverse, realizes that gas injection is acted with extraction.The section of valve element 12 is more than the die cavity section in die, utilizes die end face and valve
The cascaded surface of core realizes that the position of valve element gas injection and core pulling is spacing.When being molded larger cross-section product in gas injection nozzle 15 and bullet
Cooperation section milling plane, in the hypomere design step and milling plane of gas injection nozzle 15 during shaping small cross sections product, it is ensured that
The processing technology of nozzle is simultaneously easily installed.
The present invention has the advantage that compared with technical background：(1) gas injection nozzle is hollow tubular, reduces gas injection
The pressure loss；(2) gas injection nozzle is axially consistent with mold cavity axis prime direction, it is ensured that the starting direction of propulsion of bullet；(3) adopt
It is reliable and stable with embedded installation, and it is easy to transplanting；(4) design of gas injection nozzle reduces machining accuracy and manufacturing cost, and can
By avoiding the problem of melten gel is into nozzle, the reliably sealing to gas is realized；(5) gas injection nozzle stretch into die cavity section can
Targeted design, it is ensured that the versatility of the gas injection device；(6) application thin cylinder controls the advance and retreat of valve element, easy to operate, dynamic
Make reliable.
Brief description of the drawings
Fig. 1 is gas injection device general assembly drawing.
Fig. 2 is valve core structure schematic diagram.
Fig. 3 is valve body structure schematic diagram.
Fig. 4 is big footpath gas injection nozzle structural representation.
Fig. 5 is path gas injection nozzle structural representation.
Fig. 6 is gas injection device operating diagram.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings：
Gas injection device general assembly drawing is as shown in Figure 1.The gas injection device device includes plug 1, valve body 2, gasket seal 3, straightened
Footpath high-pressure air pipe joint 4, SDA thin cylinders 5, air cylinder support 6, adjusting nut 7, cylinder connector 8, shaft coupling 9, coupled axle-pin 10,
Flange 11, valve element 12, valve element stop screw 13, O-ring seal 14, gas injection nozzle 15.Reducing diameter high voltage gas-tpe fitting 4, flange
11 with the thread connection of valve body 2；Cylinder 5 is bolted on air cylinder support 6, and air cylinder support is fixed by screws in valve body 2
On；Cylinder is connected by cylinder connector 8, shaft coupling 9, coupled axle-pin 10 with valve element 12；O-ring seal 14 is housed on valve element 12, put
In in valve body 2；Limited location screw 13 carries out spacing and rotation stop between valve element 12 and valve body 2；Valve design has hangers, is directly embedded into peace
Between mould die and mould bases；Gas injection nozzle 15 is designed as hollow tubular, and the cross sectional shape that cross sectional shape can be according to bullet
Size and design；Gas injection nozzle 15 uses thread connection with valve element 12；The gas injection device is driven after valve element advance by thin cylinder 5
Move back, realize that gas injection is acted with extraction.
Valve core structure is as shown in Fig. 2 valve element uses hollow structure, and gases at high pressure are travelled forward by hollow driving bullet.
Including O-shaped seal groove 201, O-shaped seal groove and valve body are brought into close contact the sealing ensured between valve element and valve body；Internal thread 202
Different nozzles can be changed for various sizes of bullet；Gas injection port 3 is used for conveying high-pressure gas；Valve element limit convex 204 is prevented
Valve core movement stroke is excessive；Valve element stopper slot 205 is used to install stop screw, prevents valve element along axis rotation；Pin hole 207 is used
It is connected in by valve element with shaft coupling；Plane 206 is used as positioning plane of reference when valve element is installed, so that valve element stop screw can be smoothly
Stopper slot 205 is aligned to screw in.
Valve body structure is as shown in figure 3, to ensure that gas injection device and mould form good cooperation, valve body is provided with two installations
Convex shoulder 301；For convenience of installing, a horizontal stroke 302, perpendicular 303 holes are bored on valve body respectively, is blocked using plug, prevents high pressure gas leakage；
Valve body is connected by mounting hole 305 with air cylinder support；Hole 304,306 is respectively used to install high-pressure air pipe joint and flange；Counterbore
307 are used to install spacing rotation stopping screw, to limit valve core rotation, it is ensured that valve element accurate positioning.
Big footpath gas injection nozzle such as Fig. 4, the larger-size product of nozzle needle pair cross-section and design.Coordinating section milling with bullet
Cut and obtain spanner flat 401, so as to the installation and dismounting of nozzle；Through hole 402 is used to inject gases at high pressure, drives bullet；It is spacing
The installation that shoulder 403 is used for nozzle is spacing；Screw thread 404 is used for being connected and fixed for gas injection nozzle.
Path gas injection nozzle such as Fig. 5, the less product of nozzle needle pair cross-section size and design.Pulled in hypomere milling
Hand plane 501, so as to the installation and dismounting of nozzle；Through hole 502 is used to inject gases at high pressure, drives bullet；Spacing shoulder 503 is used
It is spacing in the installation of nozzle；Screw thread 504 is used for being connected and fixed for gas injection nozzle.
The working condition that the gas injection is mounted in body driving bullet assisted injection molding process is as shown in Figure 6：Cylinder 5 drives valve element
12 are moved up, and until its end face props up the lower surface of die 18, gas injection nozzle 15 is stretched into inside mold cavity；Bullet 16 is enclosed on note
In gas jets 15, bullet is pressed on nozzle and wraps up bullet 16 and gas injection nozzle 15 by melten gel injection；Then gases at high pressure via
Gas injection nozzle 15 injects, and driving bullet 16 departs from gas injection nozzle 15 and penetrated forward in melten gel, completes filling, pressurize, cooling
After sizing, air venting；Cylinder extracts downwards valve element 12 out, and gas injection nozzle 15 detaches die cavity, molds pickup；And exhaust hood 5 is made
Reset is released with by valve element 12, prepares next injection cycle.
Claims (3)
1. a kind of gas injection device simple in construction, reliable in action for gas-powered bullet assisted injection molding process, its feature exists
In：The device includes plug（1）, valve body（2）, gasket seal（3）, reducing diameter high voltage gas-tpe fitting（4）, SDA thin cylinders
（5）, air cylinder support（6）, adjusting nut（7）, cylinder connector（8）, shaft coupling（9）, coupled axle-pin（10）, flange（11）, valve element
（12）, valve element stop screw（13）, O-ring seal（14）, gas injection nozzle（15）, reducing diameter high voltage gas-tpe fitting（4）, flange
（11）With valve body（2）Thread connection；Cylinder（5）It is bolted on air cylinder support（6）On, air cylinder support is fixed by screw
In valve body（2）On；Cylinder（5）Pass through cylinder connector（8）, shaft coupling（9）, coupled axle-pin（10）With valve element（12）Connection；Valve element
（12）It is upper that O-ring seal is housed（14）, it is placed in valve body（2）It is interior, it is ensured that the reliable sealing of gas；Valve element（12）With valve body（2）Between
Limited location screw（13）Carry out spacing and rotation stop；Valve design has hangers, is directly embedded between mould die and mould bases, protects
The reliability installed has been demonstrate,proved, and has been easy to transplanting；Gas injection nozzle（15）Design use hollow tubular, reduce gas injection pressure
Loss；Gas injection nozzle（15）Cross sectional shape can be designed according to the cross sectional shape size of bullet, to adapt to different cross section shape
The product shaping of size；Gas injection nozzle（15）With valve element（12）Using threaded connection, it is conveniently replaceable；Gas injection nozzle（15）Axis with
Mold cavity axis prime direction is consistent, it is ensured that bullet is penetrated between after departing from nozzle under pressed gas drives stably in the melt；
Gas injection nozzle（15）Stretch into cavity portion and be divided into two sections, epimere coordinates with bullet, bullet is fixed during injecting glue and covered using bullet
Prevent melten gel from entering gas channel, wrapped up during hypomere injecting glue by melten gel, it is ensured that reliable sealing during follow-up gas injection；The gas injection device
By thin cylinder（5）Valve element forward-reverse is driven, realizes that gas injection is acted with extraction.
2. it is according to claim 1 a kind of simple in construction, reliable in action for gas-powered bullet assisted injection molding process
Gas injection device, it is characterised in that：Valve element（12）Section is more than the die cavity section in die, utilizes the rank of die end face and valve element
Tread realizes that the position of valve element gas injection and core pulling is spacing.
3. it is according to claim 1 a kind of simple in construction, reliable in action for gas-powered bullet assisted injection molding process
Gas injection device, it is characterised in that：When being molded larger cross-section product in gas injection nozzle（15）Cooperation section milling with bullet is put down
Face, in gas injection nozzle during shaping small cross sections product（15）Hypomere design step and milling plane, it is ensured that gas injection nozzle（15）
Processing technology and be easily installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610044287.7A CN105643874B (en) | 2016-01-22 | 2016-01-22 | A kind of gas injection device for gas-powered bullet assisted injection molding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610044287.7A CN105643874B (en) | 2016-01-22 | 2016-01-22 | A kind of gas injection device for gas-powered bullet assisted injection molding process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105643874A CN105643874A (en) | 2016-06-08 |
| CN105643874B true CN105643874B (en) | 2017-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610044287.7A Expired - Fee Related CN105643874B (en) | 2016-01-22 | 2016-01-22 | A kind of gas injection device for gas-powered bullet assisted injection molding process |
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| CN (1) | CN105643874B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042621B (en) * | 2017-04-06 | 2023-04-07 | 华东交通大学 | Simple and reliable water-assisted injection molding process water-gas injection and discharge control valve |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06320565A (en) * | 1993-05-13 | 1994-11-22 | Kyoraku Co Ltd | Production of resin tubular member |
| DE102010015452B3 (en) * | 2010-04-17 | 2011-06-09 | Wittmann Battenfeld Gmbh | Method and device for injection molding a molded part |
| DE102011100132B4 (en) * | 2011-04-30 | 2020-07-23 | Vereinigung zur Förderung des Instituts für Kunststoffverarbeitung in Industrie und Handwerk an der Rhein.-Westf. Technischen Hochschule Aachen e.V. | Process for the production of hollow polymeric bodies |
| CN103407087A (en) * | 2013-08-26 | 2013-11-27 | 华东交通大学 | Water-assisted (co-injection) injection mold for complex-formed tube and stick plastic parts |
| CN103737790B (en) * | 2013-12-26 | 2016-03-09 | 宁波舜宇模具有限公司 | A kind of foaming with gas device |
| CN205614928U (en) * | 2016-01-22 | 2016-10-05 | 华东交通大学 | A gas injection device that is used for gas drive shot to assist shooting technique |
-
2016
- 2016-01-22 CN CN201610044287.7A patent/CN105643874B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN105643874A (en) | 2016-06-08 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170725 Termination date: 20180122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |