CN108081539A - For the gas-assisted molding device of mold - Google Patents
For the gas-assisted molding device of mold Download PDFInfo
- Publication number
- CN108081539A CN108081539A CN201611043337.6A CN201611043337A CN108081539A CN 108081539 A CN108081539 A CN 108081539A CN 201611043337 A CN201611043337 A CN 201611043337A CN 108081539 A CN108081539 A CN 108081539A
- Authority
- CN
- China
- Prior art keywords
- gas
- assisted molding
- needle
- molding device
- mold
- 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.)
- Pending
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
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- 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
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
-
- 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
- B29C45/72—Heating or cooling
- B29C45/7207—Heating or cooling of the moulded articles
-
- 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
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
- B29C45/1706—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles using particular fluids or fluid generating substances
- B29C2045/1709—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles using particular fluids or fluid generating substances using a cooling fluid
Abstract
Present invention is disclosed a kind of gas-assisted molding devices for mold, mounted on the cover half part of mold, the needle driven including driving device and by driving device, in the centre bore of the one connection mold cavity of needle insertion, fluid passageway is set between the needle and the inner wall of centre bore, the centre bore has the gas outlet connected with mold cavity, and the movement of driving device valve needle controls the air inlet from fluid passageway to mold cavity to be closed or opened gas outlet.The gas-assisted molding device of the present invention, by using external compression gas-assisted molding, the high request to template strength and injection molding machine is reduced, so as to save cost, and the gas-assisted molding device of the present invention, the gas of introducing pushes product to mode high smooth surface, and product external surfaces is made to be fitted closely with the high smooth surface of mode, until during product cooling, appearance is good, zero defect, therefore can also ensure that Surface Appearance beauty, improve injecting products quality.
Description
Technical field
The present invention relates to a kind of gas-assisted molding devices for mold, especially a kind of independence for injection mold
Gas-assisted molding device.
Background technology
In injection moulding process, solution is shunk because of cooling, and injection molding machine is slowly moved forward using screw rod continuation, makes material
Melt in pipe continues to inject cavity, to supplement the needs of shrink of product, product is made to be cooled down simultaneously in dwell pressure and mold
Under the action of, ensure product appearance and size requirement.
Existing Shooting Technique is ensures product quality, and mold need to be bigger than product size, this also results in mating injection molding machine
Tonnage is larger, and the costs such as such mold materials, transport, water, electricity, injection molding machine are accordingly higher；As can try every possible means to reduce die size,
Some corresponding costs can also be reduced；According to traditional injection moulding technique, it is as follows to reduce the problem of die size will appear from：Mold ruler
Very little reduction, fixed screw can will be reduced accordingly；Mould strength will weaken；During Injection hold pressure, template deformation is easily led to, is noted
It is bad that flash, not full etc. occurs in molding product.
The content of the invention
It can reduce die cost, use simple in structure, injecting products quality is high it is an object of the invention to provide a kind of
In the gas-assisted molding device of mold.
For achieving the above object, the present invention provides a kind of gas-assisted molding device, mounted on the cover half portion of mold
Point, the needle driven including driving device and by driving device, the needle insertion one is connected in the centre bore of mold cavity,
Fluid passageway is set between the needle and the inner wall of centre bore, the centre bore has the gas outlet connected with mold cavity,
The driving device drive the valve needle movements be closed or opened the gas outlet so as to control from the fluid passageway to
The air inlet of mold cavity.
As being further improved for an embodiment of the present invention, the centre bore is arranged in the template of mold.
As being further improved for an embodiment of the present invention, airflow hole, the air-flow are set in the template of the mold
Hole and the fluid passage in fluid communication.
As being further improved for an embodiment of the present invention, the driving device is configured to electric cylinder.
As being further improved for an embodiment of the present invention, the driving device is configured to cylinder, and the cylinder includes
Enterprising gas port and lower air inlet, when the enterprising gas port is closed, lower inlet charge, the cylinder by piston driving needle to
Upper movement；When the enterprising gas port air inlet, lower inlet close, the cylinder is moved downward by needle described in piston driving.
As being further improved for an embodiment of the present invention, in the template of the mold set be respectively communicated with it is described enterprising
The upper gas circuit and lower gas circuit of gas port and lower air inlet.
As being further improved for an embodiment of the present invention, the piston driving needle moves upwards, the lower air inlet
Mouth is connected with the fluid passageway.
As being further improved for an embodiment of the present invention, the gas-assisted molding device, which further includes, to be mountable to
The matrix of mould template, the centre bore are arranged on matrix.
As being further improved for an embodiment of the present invention, the cylinder, which is connected through a screw thread, to be fixed on matrix.
As being further improved for an embodiment of the present invention, the end structure of the needle the falling from large to small for outer diameter
Round table-like, the gas outlet of the centre bore is configured to the rounding mesa-shaped of internal diameter from large to small, and the rounding mesa-shaped of the needle is inclined
Gradient is identical with the gradient of the rounding mesa-shaped of the gas outlet.
Compared with prior art, the beneficial effects of the present invention are：The gas-assisted molding device of the present invention is with independent
Unit, quantity as needed and position are arranged in cavity, can also coordinate Hot Runner System, complete gas-assisted molding.
The present invention gas-assisted molding device, for template size require it is relatively low, substitute pressurize after formed product it is fast, system maintenance into
This reduction, reduces product internal stress and product strength increases.In addition, the gas-assisted molding device processing of the present invention is simple,
It is non-interference with glue-feeding system, installation can be individually processed, and independent gas-assisted molding device is matched somebody with somebody with Hot Runner System
It closes and uses, it is strong individually to adjust controllability.It uses independent structure, has the advantages of easy to use, at low cost.Use the present invention
Gas-assisted molding device, die size can be reduced, some corresponding costs can also be reduced.Pass through gas-assisted molding, drop
The low high request to template strength and injection molding machine, so as to save cost.And the gas-assisted molding device of the present invention, it introduces
Gas push product to mode high smooth surface, product external surfaces is made to be fitted closely with the high smooth surface of mode, until product cooling when, outside
Sight face is good, zero defect, therefore can also ensure that Surface Appearance beauty, improves injecting products quality.
Description of the drawings
Fig. 1 is the schematic diagram that gas-assisted molding device is used for injection mold in the preferred embodiment of the present invention；
Fig. 2 is the sectional view of the gas-assisted molding device in Fig. 1, and needle is in the position for closing gas outlet at this time；
Fig. 3 is similar to Fig. 2, and needle is in the position for opening gas outlet at this time.
Specific embodiment
Below with reference to specific embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously
The present invention is not limited, structure that those of ordinary skill in the art are made according to these embodiments, method or functionally
Conversion is all contained in protection scope of the present invention.
As shown in Figure 1, gas-assisted molding device provided by the invention is used for injection mold, injection mold includes cover half portion
Divide 1 and dynamic model part 2, screw is set on fixed clamping plate, for the fixation of fixed clamping plate, fixed clamping plate is equipped with locating ring,
Gas-assisted molding device is arranged in cover half part 1.
With reference to shown in Fig. 2 to Fig. 3, in currently preferred first embodiment, gas-assisted molding device 100 is a kind of whole
The device of body formula, you can be directly installed on using the component as entirety or independent unit on the position that mold reserves.
The gas-assisted molding device includes driving device 20 and the needle 30 driven by driving device, one connection mould of the insertion of needle 30
In the centre bore 15 for having cavity, the internal diameter of centre bore 15 is more than the outer diameter of needle 30, therefore has between centre bore 15 and needle 30
There is gap, which constitutes fluid passageway 40.Centre bore 15 has the gas outlet 151 connected with mold cavity, driving dress
It puts 20 valve needles 30 to move upwards to open gas outlet 151, so as to which the gas in fluid passageway 40 can pass through gas outlet 151
Flow into mold cavity；20 valve needle 30 of driving device moves downward to close gas outlet 151, so as to disconnect from fluid passageway 40
To the air inlet of mold cavity.
In the present embodiment, gas-assisted molding device 100 further includes matrix 50, and driving device 20 is mounted on matrix 50,
Specifically, driving device 20 uses screw-type connection with matrix 50, centre bore 15 is also disposed on matrix 50, further, is driven
Dynamic device 20 is configured to cylinder, and cylinder drives needle 30 to move up and down by piston 23.Cylinder have enterprising gas port 21 and under into
Gas port 22, in template 10 with gas circuit 11 and lower gas circuit 12 in the 22 corresponding setting of enterprising gas port 21 and lower air inlet, when gas from
Lower gas circuit 12 is from lower air inlet 22 into cylinder, and piston 23 drives needle 30 to open up, at this point, lower air inlet 22 leads to fluid
Road 40 connects, in this way, the gas from lower air inlet 22 into cylinder enters the cavity of mold by fluid passageway 40；Conversely, work as
For gas from upper gas circuit 11 from enterprising gas port 21 into cylinder, piston 23 drives needle 30 to close downwards.Lower air inlet 22 close with
And needle 30 closes gas outlet 151, the cavity that mold is entered to disconnecting air-flow provides double shield.
In the present embodiment, the center in the Center-to-Center hole 15 of needle 30 is arranged concentrically, and the end structure of needle 30 is outer
The reverse frustoconic of footpath from large to small, the end structure of corresponding centre bore 15 are the reverse frustoconic of internal diameter from large to small, and the two
Gradient it is roughly equal, therefore, the end of the end of needle 30 and centre bore 15 when needle 30 is in downward closed position
Portion can be bonded closely, so as to prevent gas enter the plastic cement melted in mold cavity or mold cavity from gas outlet 151 into
Enter fluid passageway 40.
Certainly, those skilled in the art can be easy to think of, and centre bore 15 can also be set directly at the mould of mold
On plate 10, the centre bore that needle 30 is inserted into template 10 can also realize the air inlet of mold cavity.In addition, gas auxiliary into
Type device can also include mold insert, and mold insert can be embedded in the position reserved on mould template, and matrix can be arranged on mold insert, such as
Gas-assisted molding device can be configured to the assembly unit of shape size rule by this by mold insert.
Further, driving device 20 can also be configured to electric cylinder, and airflow hole, airflow hole and stream are set in template 10
Body passage 40 is in fluid communication, i.e., drill centers 15 is inserted into for needle 30 in template 10, in template perpendicular to the face of centre bore 15
Upper brill airflow hole, and airflow hole is made to be connected with centre bore 15, so external supply can be entered with the airflow hole on self-template 10
Fluid passageway 40.Because airflow hole and fluid passageway 40 are always maintained at connected state, in this way, need not control the ventilation of airflow hole with
It is no, it only need to be by the way that needle be controlled just to realize air inlet or disconnection air inlet from gas outlet 151 to mold cavity about 30.
Next it will be explained in detail the specific operation process of gas-assisted molding device in the present embodiment.
With reference to shown in Fig. 2 to Fig. 3, upper 11 air inlet of gas circuit, the enterprising gas port 21 of cylinder is opened, and lower air inlet 22 is closed, living
Plug 23 drives 30 times closings of needle, i.e., needle 30 is located at position as shown in Figure 2, and melt plastic cement is by the hot mouth stream by hot flow path
Enter mold cavity, when reaching predetermined shot, lower 12 air inlet of gas circuit, the enterprising gas port 21 of cylinder is closed, and lower air inlet 22 is beaten
It opens, piston 23 drives needle 30 to open up, i.e., needle 30 is located at position as shown in Figure 3, and compressed gas will be through at this time
It crosses cylinder and fluid passageway 40 reaches and air pressurize is carried out in cavity.The enterprising gas port 21 of cylinder at the end of with gas pressurize
Air inlet, piston 23 is forced downwards to drive needle 30 is whole to move downward, and 30 end of needle is by gas outlet 151 at this time
It is closed, prevents to the excessive reflux for causing gas and plastic cement of cavity pressure.
The gas-assisted molding device of the present invention is arranged in cavity with independent unit, can also be coordinated hot flow path system
System completes gas-assisted molding.Independent cylinder is interfixed with matrix using screw thread, and cylinder interior piston is fixed with needle, is used
Gas into piston is out driven, and piston action is made directly needle to be driven to move up and down, had to the disengaging of gas
The control of effect is realized simultaneously utilizes air pressurize.The gas-assisted molding device of the present invention, it is relatively low for template size requirement, it replaces
Fast for formed product after pressurize, system maintenance cost reduction, reduces product internal stress and product strength increases.In addition, this hair
Bright gas-assisted molding device processing is simple, non-interference with glue-feeding system, can individually process installation.And independent gas
Body auxiliary forming device is used cooperatively with Hot Runner System, and it is strong individually to adjust controllability.Use the gas-assisted molding of the present invention
Device can reduce die size, some corresponding costs can also be reduced.By gas-assisted molding, reduce to template strength and
The high request of injection molding machine, so as to save cost.And the gas-assisted molding device of the present invention, the gas of introducing push away product
To the high smooth surface of mode, product external surfaces is made to be fitted closely with the high smooth surface of mode, until during product cooling, appearance is good, intact
It falls into, therefore can also ensure that Surface Appearance beauty, improve injecting products quality.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
For bright book as an entirety, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can
With the other embodiment of understanding.
Those listed above is a series of to be described in detail only for feasibility embodiment of the invention specifically
Bright, they are not to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention
Or change should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of gas-assisted molding device for mold, mounted on the cover half part of mold, it is characterised in that：Including driving
Device and the needle driven by driving device, in the centre bore of one connection mold cavity of needle insertion, the needle and
Fluid passageway is set between the inner wall of centre bore, and the centre bore has the gas outlet connected with mold cavity, the driving dress
The driving valve needle movements are put to control from the fluid passageway to mold cavity to be closed or opened the gas outlet
Air inlet.
2. gas-assisted molding device according to claim 1, which is characterized in that the centre bore is arranged at the mould of mold
On plate.
3. gas-assisted molding device according to claim 2, which is characterized in that air-flow is set in the template of the mold
Hole, the airflow hole and the fluid passage in fluid communication.
4. gas-assisted molding device according to claim 1, which is characterized in that the driving device is configured to electronic
Cylinder.
5. gas-assisted molding device according to claim 1, which is characterized in that the driving device is configured to cylinder,
The cylinder includes enterprising gas port and lower air inlet, and when the enterprising gas port is closed, lower inlet charge, the cylinder passes through work
Plug drives needle to move upwards；When the enterprising gas port air inlet, lower inlet close, the cylinder passes through valve described in piston driving
Pin moves downward.
6. gas-assisted molding device according to claim 5, which is characterized in that difference is set in the template of the mold
Connect the upper gas circuit of the enterprising gas port and lower air inlet and lower gas circuit.
7. gas-assisted molding device according to claim 5, which is characterized in that the piston driving needle is transported upwards
Dynamic, the lower air inlet is connected with the fluid passageway.
8. gas-assisted molding device according to claim 5, which is characterized in that the gas-assisted molding device also wraps
The matrix for being mountable to mould template is included, the centre bore is arranged on matrix.
9. gas-assisted molding device according to claim 8, which is characterized in that the cylinder is connected through a screw thread fixation
In on matrix.
10. gas-assisted molding device according to claim 1, which is characterized in that the end structure of the needle is outer
The rounding mesa-shaped of footpath from large to small, the gas outlet of the centre bore are configured to the rounding mesa-shaped of internal diameter from large to small, the needle
Rounding mesa-shaped gradient it is identical with the gradient of the rounding mesa-shaped of the gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611043337.6A CN108081539A (en) | 2016-11-21 | 2016-11-21 | For the gas-assisted molding device of mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611043337.6A CN108081539A (en) | 2016-11-21 | 2016-11-21 | For the gas-assisted molding device of mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108081539A true CN108081539A (en) | 2018-05-29 |
Family
ID=62171085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611043337.6A Pending CN108081539A (en) | 2016-11-21 | 2016-11-21 | For the gas-assisted molding device of mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108081539A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116505216A (en) * | 2023-06-30 | 2023-07-28 | 宁德时代新能源科技股份有限公司 | Inflation mechanism, battery bulge forming device and battery production system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5137680A (en) * | 1990-07-16 | 1992-08-11 | Milad Limited Partnership | Method of injection molding utilizing pressurized fluid source within a chamber in a mold |
| JPH054251A (en) * | 1991-06-27 | 1993-01-14 | Honda Motor Co Ltd | Method and device fork pouring gas in hollow molded article |
| JPH0557754A (en) * | 1991-09-02 | 1993-03-09 | Taiho Kogyo Kk | Gas pressure feed mold |
| EP0577840A1 (en) * | 1991-12-27 | 1994-01-12 | Asahi Kasei Kogyo Kabushiki Kaisha | Method of blow molding and pressurized fluid injection and discharge device therefor |
| JPH0655563A (en) * | 1992-08-11 | 1994-03-01 | Sekisui Chem Co Ltd | Manufacture for hollow molded body |
| CN1228730A (en) * | 1996-06-28 | 1999-09-15 | 英科公司 | Valve-gate bushing for gas-assisted injection molding |
| JPH11320623A (en) * | 1998-05-20 | 1999-11-24 | Canon Inc | Hollow injection molding device and hollow injection molding method |
| CN206186228U (en) * | 2016-11-21 | 2017-05-24 | 柳道万和(苏州)热流道系统有限公司 | A gas -assisted forming device for mould |
-
2016
- 2016-11-21 CN CN201611043337.6A patent/CN108081539A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5137680A (en) * | 1990-07-16 | 1992-08-11 | Milad Limited Partnership | Method of injection molding utilizing pressurized fluid source within a chamber in a mold |
| JPH054251A (en) * | 1991-06-27 | 1993-01-14 | Honda Motor Co Ltd | Method and device fork pouring gas in hollow molded article |
| JPH0557754A (en) * | 1991-09-02 | 1993-03-09 | Taiho Kogyo Kk | Gas pressure feed mold |
| EP0577840A1 (en) * | 1991-12-27 | 1994-01-12 | Asahi Kasei Kogyo Kabushiki Kaisha | Method of blow molding and pressurized fluid injection and discharge device therefor |
| JPH0655563A (en) * | 1992-08-11 | 1994-03-01 | Sekisui Chem Co Ltd | Manufacture for hollow molded body |
| CN1228730A (en) * | 1996-06-28 | 1999-09-15 | 英科公司 | Valve-gate bushing for gas-assisted injection molding |
| JPH11320623A (en) * | 1998-05-20 | 1999-11-24 | Canon Inc | Hollow injection molding device and hollow injection molding method |
| CN206186228U (en) * | 2016-11-21 | 2017-05-24 | 柳道万和(苏州)热流道系统有限公司 | A gas -assisted forming device for mould |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116505216A (en) * | 2023-06-30 | 2023-07-28 | 宁德时代新能源科技股份有限公司 | Inflation mechanism, battery bulge forming device and battery production system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180529 |
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| RJ01 | Rejection of invention patent application after publication |