CN201296018Y - Pressurized injection molding device - Google Patents
Pressurized injection molding device Download PDFInfo
- Publication number
- CN201296018Y CN201296018Y CNU2008201463674U CN200820146367U CN201296018Y CN 201296018 Y CN201296018 Y CN 201296018Y CN U2008201463674 U CNU2008201463674 U CN U2008201463674U CN 200820146367 U CN200820146367 U CN 200820146367U CN 201296018 Y CN201296018 Y CN 201296018Y
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- die cavity
- compress cell
- mould device
- injection mould
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Abstract
The utility model discloses a pressurized injection molding device, which comprises two templates, a pressurization unit and a one-way valve, wherein, a sealing die cavity is formed between the two templates which are closed; the pressurization unit is arranged on one template and provided with a pressurization opening; the pressurization opening is communicated with the die cavity and used for blowing air into the die cavity to increase air pressure in the die cavity; and the one-way valve is communicated with the die cavity and used for controlling pressure holding at the same time of injection molding. As the pressurization unit and the one-way valve are arranged, a molding method for pressurization before the injection molding and pressure holding during the injection molding can be adopted.
Description
Technical field
The utility model relates to a kind of pressurizing injection mould device.
Background technology
Die-manufacturing method has used injection mold, has the die cavity that can seal in this injection mold.
Traditional die-manufacturing method, it comprises: (1). discharge the gas in the die cavity; (2). injection moulding in die cavity.Owing in the die cavity steam is arranged, therefore the gas in the melt substance can appear at the surface of finished product and form material flower and bubble when injection moulding, causes the phenomenon that produces material flower and bubble on the finished product to happen occasionally.
At above-mentioned deficiency, the someone has proposed solution, for example disclosed among the JP-B-62-16166 (JP-B refers to " Japan Patent of having examined is open ") back-pressure injection moulding process.This back-pressure injection moulding process, it comprises: (1). in die cavity, blows to increase the air pressure in the die cavity; (2). injection moulding in die cavity.Owing to when injection moulding, the cavity in the die cavity reduces (fused materials enters in the die cavity) gradually, and pressure increases, and therefore have following deficiency: 1. injection moulding speed is inhomogeneous, influences the mobile property of fused materials, and product qualified rate is not high; 2, on the finished product mould phenomenon that rises can appear.
At above-mentioned deficiency, the someone has proposed another solution, the back-pressure injection moulding process of for example announcing among the CN1101748C.This back-pressure injection moulding process, it comprises: (1). vacuumizes; (2). in die cavity, blow to increase the air pressure in the die cavity; (3). injection moulding in die cavity, in die cavity, pressurize in the time of injection moulding.Pressure increases in the die cavity, and therefore have following deficiency: 1. injection moulding speed is inhomogeneous, influences the mobile property of fused materials, and product qualified rate is not high; 2, on the finished product mould phenomenon that rises can appear; 3, also include and vacuumize step, the cost height, time-consuming.
The utility model content
The utility model provides a kind of pressurizing injection mould device, and it has overcome the deficiency that can occur material flower and bubble phenomenon on the existing finished product of injection mould device of background technology.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of pressurizing injection mould device, it comprises:
Two templates, this two templates matched moulds and be formed with the die cavity that can seal between them;
Be used for blowing in die cavity to increase the compress cell of the air pressure in the die cavity, it is located on the template and has boost port, and this boost port is communicated with die cavity; And
Be used for the check valve of control pressurize in injection moulding, it is communicated with die cavity.
In the preferred embodiment of the present utility model, also be provided with drier on this compress cell.
In the preferred embodiment of the present utility model, it also comprises:
One electronic valve, it connects compress cell; And
One time relay, it connects compress cell.
In the preferred embodiment of the present utility model, it also comprises:
One electronic valve, it connects compress cell; And
One time relay, it connects electronic valve.
In the preferred embodiment of the present utility model, it also comprises:
One is installed in the supporting seat of a template, and this compress cell, electronic valve and the time relay all are arranged within the supporting seat.
In the preferred embodiment of the present utility model, offer one on this template and be communicated with the inside and outside blowing slot of die cavity, the air port that increases of this compress cell connects blowing slot.
In the preferred embodiment of the present utility model, offer one on this template and be communicated with the inside and outside gas pressure relief slot of die cavity, this check valve is arranged on gas pressure relief slot.
The technical program is compared with background technology: owing to be provided with compress cell and check valve, therefore can adopt the preceding supercharging of injection moulding, the die-manufacturing method of pressurize during injection moulding, so overcome the existing deficiency of background technology, and has following advantage: 1, utilize air pressure and plastic cement to penetrate the inconsistent and maintenance of pressure, appear at finished surface, material flower and bubble phenomenon on finished product, occur to reach elimination to prevent the bubble in the plastic cement, to improve yield rate, lower defect rate; 2, it is constant to remain on the die cavity internal gas pressure, penetrates the constant pressure differential between pressure and the die cavity internal pressure, and injection moulding speed is even, and the fused materials property that flows is steady, avoids occurring rising the mould phenomenon, guarantees finished product saturation degree and closeness, improves yield rate, lowers defect rate; 3, directly adopt supercharging air, need not to vacuumize, easy to operate quick, the molding cost is low.Owing to be provided with drier, therefore can remove airborne moisture, can effectively control the material flower and the bubble phenomenon of finished product, can effectively solve the higher problem of mould defect rate that causes because of hydrone in the die cavity is too high, effectively controlled the saturation degree in the mould.Owing to be provided with the time relay, therefore be convenient to control, precise control.Because this compress cell, electronic valve and the time relay all are arranged within the supporting seat, therefore whole appearance looks elegant is clean and tidy.Owing to be provided with blowing slot, gas pressure relief slot, therefore can guarantee the closure of die cavity.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 has illustrated the schematic diagram of the supercharging device for producing molds of a preferred embodiment.
The specific embodiment
Please refer to Fig. 1, a kind of pressurizing injection mould device, it comprises that two templates 10, are installed in a supporting seat 20 and the check valve 40 on the template 10, is equiped with a compress cell 30, an electronic valve 50, a time relay 60 and a drier 70 within this supporting seat 20.
Behind these two templates, 10 matched moulds, be formed with a die cavity 11 that can seal between them.In order to allow the injection machine can injection moulding in die cavity 11, on this template 10, also be provided with injection hole 12.Also being provided with one on this template 10 is communicated with die cavity 11 inside and outside blowing grooves 13 and and is communicated with the inside and outside disappointing groove 14 of die cavity 11.14 of the grooves that should lose heart in the present embodiment are provided with one, but not as limit, also can be provided with 2 or a plurality of as required.Best, this disappointing groove 14 be arranged on injection hole 12 away from the corner, plane on or on the die joint, with steady pressure release.
This compress cell 30 comprises an air compressor and a gassing pipe.The control button of this air compressor is arranged on outside the supporting seat 20 controls key switch for the user.First port of this gassing pipe is connected air compressor, and second port (boost port) is connected blowing groove 13 inlets, so air compressor can be blown with supercharging in die cavity 11.Above-mentioned electronic valve 50 is arranged on the gassing pipe in order to control gassing pipe break-make.Above-mentioned drier 70 is connected on the gassing pipe, and in order to remove airborne moisture, in concrete the enforcement, this drier 70 can adopt drier (directly absorbing moisture) or cooler (cooling steam is discharged after becoming the water liquid state).
Whether this time relay 60 works in order to the air compressor of control compress cell 30, perhaps, and in order to control electronic valve 50 break-make whether.It mainly is used in: after air compressor was started working, behind the predetermined amount of time (it is the constant time that the air pressure in the die cavity 11 reaches the predetermined pressure required time), the time relay 60 control air compressors quit work or electronic valve cuts off.
This check valve 40 is arranged on the groove 14 that loses heart, and it can only outwards lose heart, and can not inwardly blow, to realize keeping die cavity internal gas pressure constant (because plastic cement injects in the die cavity, the cavity in the die cavity diminishes, if therefore not pressure release, then pressure can become big).As required, this check valve 40 can be set to constant voltage control check valve 40 (when the pressure of the inside can the pressure of automatically unloading up to the inside during greater than predetermined pressure equals predetermined pressure); As required, the predetermined pressure of this control check valve 40 can be regulated.
A kind of pressurizing injection mould method, it has used above-mentioned pressurizing injection mould device, and this method comprises:
The matched moulds step: matched moulds two templates 10, to be formed with the die cavity 11 that can seal;
A. the pressure increase step of blowing: blow to increase the air pressure in the die cavity in die cavity, make it reach air pressure S, it penetrates air pressure greater than atmospheric pressure and less than plastic cement; Detailed process is as follows:
The air blowing step: air compressor work and blow out air (can contain moisture in this air), simultaneously, and the electronic valve conducting, the time relay picks up counting;
The step of anhydrating: remove airborne moisture (making the hydrone mass content be less than 98%), be blown in the die cavity then;
Stop step: (air pressure in the die cavity reaches air pressure S at this moment after the scheduled time arrives, be the 6-8 Kilogram Force Per Square Centimeter, wherein, according to finished product thickness difference, complex structure degree difference, can adjust air pressure S, for example the thick more air pressure of thickness is high more, and complexity atmospheric pressure more is high more), the time relay cuts off electronic valve or stops air compressor;
B. injection step: injection machine is by injection hole injection moulding in die cavity, and injection moulding utilizes constant voltage control check valve control pressurize so that the air pressure in the die cavity remains on air pressure S simultaneously.
The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented with this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.
Claims (7)
1. pressurizing injection mould device, it is characterized in that: it comprises:
Two templates, this two templates matched moulds and be formed with the die cavity that can seal between them;
Be used for blowing in die cavity to increase the compress cell of the air pressure in the die cavity, it is located on the template and has boost port, and this boost port is communicated with die cavity; And
Be used for the check valve of control pressurize in injection moulding, it is communicated with die cavity.
2. a kind of pressurizing injection mould device according to claim 1 is characterized in that: also be provided with drier on this compress cell.
3. a kind of pressurizing injection mould device according to claim 1 and 2 it is characterized in that: further comprising:
One electronic valve, it connects compress cell; And
One time relay, it connects compress cell.
4. a kind of pressurizing injection mould device according to claim 1 and 2 it is characterized in that: further comprising:
One electronic valve, it connects compress cell; And
One time relay, it connects electronic valve.
5. a kind of pressurizing injection mould device according to claim 3 it is characterized in that: further comprising:
One is installed in the supporting seat of a template, and this compress cell, electronic valve and the time relay all are arranged within the supporting seat.
6. a kind of pressurizing injection mould device according to claim 1 and 2 is characterized in that: offer one on this template and be communicated with the inside and outside blowing slot of die cavity, the air port that increases of this compress cell connects blowing slot.
7. a kind of pressurizing injection mould device according to claim 1 and 2 is characterized in that: offer one on this template and be communicated with the inside and outside gas pressure relief slot of die cavity, this check valve is arranged on gas pressure relief slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201463674U CN201296018Y (en) | 2008-11-13 | 2008-11-13 | Pressurized injection molding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201463674U CN201296018Y (en) | 2008-11-13 | 2008-11-13 | Pressurized injection molding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201296018Y true CN201296018Y (en) | 2009-08-26 |
Family
ID=41041981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201463674U Expired - Lifetime CN201296018Y (en) | 2008-11-13 | 2008-11-13 | Pressurized injection molding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201296018Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111452300A (en) * | 2020-04-15 | 2020-07-28 | 重庆贻晨兴工业设计有限责任公司 | Rotary core type pressure injection double-color injection mold and injection molding method |
-
2008
- 2008-11-13 CN CNU2008201463674U patent/CN201296018Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111452300A (en) * | 2020-04-15 | 2020-07-28 | 重庆贻晨兴工业设计有限责任公司 | Rotary core type pressure injection double-color injection mold and injection molding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090826 |
|
| CX01 | Expiry of patent term |