CN206953476U - A kind of initiative exhaust mechanism of injection mold - Google Patents
A kind of initiative exhaust mechanism of injection mold Download PDFInfo
- Publication number
- CN206953476U CN206953476U CN201720761643.7U CN201720761643U CN206953476U CN 206953476 U CN206953476 U CN 206953476U CN 201720761643 U CN201720761643 U CN 201720761643U CN 206953476 U CN206953476 U CN 206953476U
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- Prior art keywords
- pressure ring
- exhaust
- external diameter
- suction muffler
- face
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Abstract
The utility model discloses a kind of initiative exhaust mechanism of injection mold, including exhaust needle, gas guide nozzle and air-breathing set.A suction muffler and discharge chamber with the die cavity venthole coaxial communication of cover half are opened up in template, the side of the template also opens up the gas channels connected with suction muffler；Exhaust needle is located in suction muffler and inserted in die cavity venthole；The axial centre of gas guide nozzle is provided with gas port of the diameter more than the external diameter of exhaust needle and including leading mouth body and preceding pressure ring；Lead the outer surface circular conical surface of mouth body；The mode that the gas port of the gas guide nozzle is enclosed on exhaust needle and the front end face of pressure ring is close on the outer surface of cover half in the past is located in suction muffler；The exhaust section that air-breathing set is less than the inspiratory limb of the external diameter of preceding pressure ring including external diameter successively, the rear pressure ring and external diameter of the external diameter that external diameter is equal to preceding pressure ring are adapted to the diameter of discharge chamber.Initiative exhaust mechanism of the present utility model, the gas in die cavity can actively be suctioned out, make filling rapid, avoid being molded bad, reduction molding time.
Description
Technical field
It the utility model is related to a kind of initiative exhaust mechanism of injection mold.
Background technology
Gas in injection mold not only includes the air in running gate system and die cavity, in addition to divides caused by plastic melt
The vapor that moisture becomes at high temperature in solution gas and plastics.During injection, the plastic melt of high temperature drives these gases
And dead angle is compressed to, the air chamber of multiple HTHPs is formed, the counter-pressure of the air chamber formation of these high pressures, prevents the normal of melt
Quick mold filling.The air chambers of these HTHPs is penetrated into inside melt simultaneously, causes charge to fill out deficiency, make plastic produce stomata,
The defects of cavity, tissue looseness.Therefore, in injection moulding process, it is necessary in time discharge these gases outside mould.At present, injection mould
Tool at work, original air and other gases in die cavity, be in injection with the push-in of plastic cement solution, passively from
Discharged in the gap of the die joint of mould, the mosaic gap of module and push rod.This passive exhaust mode, causes injection pressure
Loss is very big, the load increase of injection-moulding device, and exhaust effect is bad, i.e., in the end of melt flows, the remittance of multiply melt
At conjunction, the bottom of die cavity blind hole, the gas of the dead angle position of Various Complex die cavity such as bottom of reinforcement can not discharge, even if
Injection speed is reduced, melt is slowly advanced, can not also be completely exhausted out gas, so not only extend molding cycle, Er Qierong
The temperature of body reduces quickly, now just needs to improve injection pressure, and the residual stress on plastic improves therewith, after being stripped plastic
Phenomena such as producing buckling deformation.
Utility model content
The defects of the purpose of this utility model is to overcome prior art and a kind of initiative exhaust of vapour injection mold is provided
Mechanism, it can actively suction out the gas in die cavity, make filling rapid, avoid being molded bad, reduction molding time.
What the purpose of this utility model was realized in：The initiative exhaust mechanism of a kind of injection mold, installed in injection mould
In the template of the cover half outer end of tool, the exhaust gear includes exhaust needle, gas guide nozzle and air-breathing set, wherein,
One is opened up in the template with the pre-large post-small step cavity of the die cavity venthole coaxial communication of cover half simultaneously
And front cavity also opens up one and connected with the suction muffler as suction muffler, rear cavity as discharge chamber, the side of the template
Logical gas channels；
The exhaust needle is located in the suction muffler in a manner of its front portion is inserted in the die cavity venthole；
The axial centre of the gas guide nozzle is provided with the gas port that diameter is more than the external diameter of the exhaust needle；The length of the gas guide nozzle
Degree less than the suction muffler length and including leading, mouth body and being located at leads mouth body front end and external diameter is less than the suction muffler
The preceding pressure ring of diameter；The outer surface for leading mouth body is pre-large post-small circular conical surface；The gas port of the gas guide nozzle is enclosed on described
The mode that simultaneously front end face of pressure ring was close on the outer surface of the cover half in the past on exhaust needle is located in the suction muffler；
The air-breathing set is less than the inspiratory limb of the external diameter of the preceding pressure ring including external diameter successively, external diameter is equal to the outer of preceding pressure ring
The exhaust section that the rear pressure ring and external diameter in footpath are adapted to the diameter of the discharge chamber；Axial centre of the inspiratory limb together with rear pressure ring
A conical bore being adapted to substantially with the shape of the outer surface for leading mouth body is opened up, the front portion of the conical bore is with leading mouth body
Forward outer surface be tight fit, certain gap is left between the rear portion of the conical bore and the external rear face for leading mouth body；
The ground diameter that is uniformly distributed along the circumference on the rear portion wall of the inspiratory limb is to several suction holes connected with the conical bore are opened up, in circular cone
An annular pneumatic room is opened up on the hole wall in hole and in the front end of suction hole；The axial centre of the exhaust section opens up one and circle
Taper hole connects and the rear end diameter identical steam vent of diameter and conical bore, and a ring is opened up on the front end hole wall of the steam vent
Shape air guide room, spiral shape speedup groove is opened up on the hole wall of the steam vent；The anterior conical bore of the air-breathing set leads mouth described in being enclosed on
On body, the front end face of inspiratory limb is withstood on the rear end face of the preceding pressure ring, and make rear pressure ring rear end face be close to it is described
On the rear end face of suction muffler, the exhaust section is located in the discharge chamber and steam vent is enclosed on the exhaust needle.
The initiative exhaust mechanism of above-mentioned injection mold, wherein, the front end face of the preceding pressure ring and the appearance of the cover half
Preceding sealing ring is provided between face, rear sealing ring is provided between the rear end face of pressure ring and the rear end face of the suction muffler after described.
The initiative exhaust mechanism of injection mold of the present utility model has the characteristics that：Using setting air-breathing outside die cavity
Mechanism and exhaust gear, action is guided using compressed air, mould chamber air is suctioned out, be a class by die cavity after air-breathing
Vacuum state, injection solution push-in realize perfect injection almost without air drag.The mode of compressed air active inspiration,
Brief description of the drawings
Fig. 1 is the structural representation of the initiative exhaust mechanism of injection mold of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Referring to Fig. 1, the initiative exhaust mechanism of injection mold of the present utility model, outside the cover half 1 of injection mold
In the template 2 at end, the die cavity venthole 11 connected with the die cavity 10 for needing to be vented is opened up in cover half 1.
Exhaust gear of the present utility model includes exhaust needle 3, gas guide nozzle 4 and air-breathing set 5, wherein：
One is opened up in template 2 with the pre-large post-small step cavity of the coaxial communication of die cavity venthole 11 of cover half 1 simultaneously
And front cavity also opens up one and suction muffler 21 as suction muffler 21, rear cavity as discharge chamber 22, the side of the template 2
The gas channels 23 of connection；
Exhaust needle 3 is located in the suction muffler 21 in template 2, and in the anterior insertion die cavity venthole 11 of the exhaust needle 3；
The axial centre of gas guide nozzle 4 is provided with the gas port 40 that diameter is more than the external diameter of exhaust needle 3；The length of the gas guide nozzle 4
Less than the suction muffler 21 of template 2 length and lead the front end of mouth body 41 and external diameter is less than template 2 including leading mouth body 41 and being located at
On suction muffler 21 diameter preceding pressure ring 42；The outer surface for leading mouth body 41 is pre-large post-small circular conical surface；The gas guide nozzle 4
The mode that gas port 40 is enclosed on exhaust needle 3 and the front end face of pressure ring 42 is close on the outer surface of cover half 1 in the past is located at template 2
On suction muffler 21 in；Preceding sealing ring 6 is provided between the front end face of preceding pressure ring 42 and the outer surface of cover half 1；
Air-breathing set 5 is less than the inspiratory limb 51 of the external diameter of preceding pressure ring 42 including external diameter successively, external diameter is equal to the outer of preceding pressure ring 42
The exhaust section 53 that the rear pressure ring 52 and external diameter in footpath are adapted to the diameter of the discharge chamber 22 in template 2；Inspiratory limb 51 is together with rear pressure ring
The conical bore 50a that the shape that 52 axial centre opens up an outer surface with leading mouth body 41 is adapted to substantially, conical bore 50a
Front portion with the forward outer surface for leading mouth body 41 be tight fit, conical bore 50a rear portion is with leading outside the rear portion of mouth body 41
Certain gap is left between surface；The ground diameter that is uniformly distributed along the circumference on the rear portion wall of the inspiratory limb 51 is to opening up several and circular cone
The suction hole 51a of hole 50a connections, opens up an annular pneumatic room on conical bore 50a hole wall and in suction hole 51a front end
510；The axial centre of exhaust section 52 opens up one and connected with conical bore 50a and diameter and conical bore 50a rear end diameter phase
With steam vent 50b, open up an annular air guide room 520, steam vent 50b hole wall on steam vent 50b front end hole wall
On open up spiral shape speedup groove 521；5 anterior conical bore of air-breathing set, which is enclosed on, leads on mouth body 41, makes the front end face of inspiratory limb 51
Before withstanding on the rear end face of pressure ring 42, and the rear end face of rear pressure ring 52 is close on the rear end face of suction muffler 21 of template 2, arrange
Gas section 52 is located in the discharge chamber 22 of template 2 and steam vent is enclosed on exhaust needle 3；The rear end face of pressure ring 52 and suction muffler 21 afterwards
Rear end face between be provided with rear sealing ring 7.
The initiative exhaust mechanism of injection mold of the present utility model, exhaust needle 3 therein, which is arranged in die cavity, to be needed to be vented
Position, have certain gap with die cavity venthole 11；Gas guide nozzle 4 is used for the injection direction for guiding compressed air, its outer surface
Air-pressure chamber 510 is formed between air-breathing set 5；Air guide room is formed between the steam vent 50b of air-breathing set 5 and the outer surface of exhaust needle 3
520, and the compressed air for entering air guide room 520 is formed into spiral suction；Preceding sealing ring 6 and rear sealing ring 7 are arranged on suction muffler
In 21, avoid enter into the compressed air leakage of suction muffler 21 and lose.
The operation principle of the initiative exhaust mechanism of injection mold of the present utility model is：Air pressure switch and injection-moulding device
Connection, injection-moulding device send exhaust signal before the injection, open air pressure switch, and compressed air is led to by the gas circuit of template 2
Road 23 imports suction muffler 21, the sky that compressed air is entered between gas guide nozzle 4 and air-breathing set 5 by the suction hole 51a on air-breathing set 5
Gap, and air-pressure chamber 510 is collected at, the gas pressure in air-pressure chamber 510 is increased, promote compressed air to the rear portion of gas guide nozzle 4
Direction is moved, even if the intermittent motion between rear portion of the compressed air along conical bore 50a and the external rear face for leading mouth body 41
Arrive and enter air guide room 520, and be pressurized in air guide room 520, compressed air is imported spiral shape speedup groove 521, make air again
Speedup, supercharging, and spiral suction is formed, due to the effect of spiral suction, make the air in die cavity 10 successively from exhaust needle 3 and mould
The gap of chamber venthole 11, exhaust needle 3 cover 5 steam vent with the gap of the gas port 40 of gas guide nozzle 4 and exhaust needle 3 with air-breathing
50b gap location discharge, allows die cavity 10 to produce class vacuum state.Inspiratory duration is controlled (general in seconds by injection-moulding device
For 3 seconds).After the completion of exhaust, injection-moulding device, which is sent, closes compressed air signal, while injection starts, because die cavity is true in class
Injected under dummy status, for solution push-in almost without air drag, filling is rapid, not only avoids plastic parts moulding bad, realizes perfect note
Modeling, molding time is also reduced, improve injection efficiency.
Above example is only for illustration of the utility model, rather than to limitation of the present utility model, relevant technical field
Technical staff, in the case where not departing from spirit and scope of the present utility model, various conversion or modification can also be made, because
This all equivalent technical scheme should also belong to category of the present utility model, should be limited by each claim.
Claims (2)
1. a kind of initiative exhaust mechanism of injection mold, in the template of the cover half outer end of injection mold, the exhaust gear
Including exhaust needle, gas guide nozzle and air-breathing set, it is characterised in that
One and the pre-large post-small step cavity of the die cavity venthole coaxial communication of cover half and preceding are opened up in the template
Portion's cavity is as suction muffler, and as discharge chamber, the side of the template also opens up one and connected with the suction muffler rear cavity
Gas channels；
The exhaust needle is located in the suction muffler in a manner of its front portion is inserted in the die cavity venthole；
The axial centre of the gas guide nozzle is provided with the gas port that diameter is more than the external diameter of the exhaust needle；The length of the gas guide nozzle is small
In the suction muffler length and including leading the diameter that mouth body and being located at leads mouth body front end and external diameter is less than the suction muffler
Preceding pressure ring；The outer surface for leading mouth body is pre-large post-small circular conical surface；The gas port of the gas guide nozzle is enclosed on the exhaust
The mode that simultaneously front end face of pressure ring was close on the outer surface of the cover half in the past on pin is located in the suction muffler；
The air-breathing set is less than the inspiratory limb of the external diameter of the preceding pressure ring, external diameter equal to the external diameter of preceding pressure ring including external diameter successively
The exhaust section that pressure ring and external diameter are adapted to the diameter of the discharge chamber afterwards；The inspiratory limb opens up together with the axial centre of rear pressure ring
One conical bore being adapted to substantially with the shape of the outer surface for leading mouth body, the conical bore front portion with lead mouth body before
Portion outer surface is tight fit, and certain gap is left between the rear portion of the conical bore and the external rear face for leading mouth body；The suction
The ground diameter that is uniformly distributed along the circumference on the rear portion wall of gas section is to several suction holes connected with the conical bore are opened up, in conical bore
An annular pneumatic room is opened up on hole wall and in the front end of suction hole；The axial centre of the exhaust section opens up one and conical bore
Connect and the rear end diameter identical steam vent of diameter and conical bore, open up an annular on the front end hole wall of the steam vent and lead
Air chamber, spiral shape speedup groove is opened up on the hole wall of the steam vent；The anterior conical bore of the air-breathing set leads mouth body described in being enclosed on
On, the front end face of inspiratory limb is withstood on the rear end face of the preceding pressure ring, and the rear end face of rear pressure ring is close to the air-breathing
On the rear end face of chamber, the exhaust section is located in the discharge chamber and steam vent is enclosed on the exhaust needle.
2. the initiative exhaust mechanism of injection mold according to claim 1, it is characterised in that the front end face of the preceding pressure ring
Be provided with preceding sealing ring between the outer surface of the cover half, it is described after between the rear end face of pressure ring and the rear end face of the suction muffler
Provided with rear sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720761643.7U CN206953476U (en) | 2017-06-28 | 2017-06-28 | A kind of initiative exhaust mechanism of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720761643.7U CN206953476U (en) | 2017-06-28 | 2017-06-28 | A kind of initiative exhaust mechanism of injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206953476U true CN206953476U (en) | 2018-02-02 |
Family
ID=61386375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720761643.7U Expired - Fee Related CN206953476U (en) | 2017-06-28 | 2017-06-28 | A kind of initiative exhaust mechanism of injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206953476U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109796122A (en) * | 2019-03-20 | 2019-05-24 | 安徽古井贡酒股份有限公司 | A kind of glass bottle and jar molding die |
| CN111283966A (en) * | 2020-02-24 | 2020-06-16 | 湖北湘纬新能源科技有限公司 | Formed nail die and processing method thereof |
| CN112477012A (en) * | 2020-11-09 | 2021-03-12 | 浙江后起模塑有限公司 | Motorcycle front panel injection mold |
-
2017
- 2017-06-28 CN CN201720761643.7U patent/CN206953476U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109796122A (en) * | 2019-03-20 | 2019-05-24 | 安徽古井贡酒股份有限公司 | A kind of glass bottle and jar molding die |
| CN111283966A (en) * | 2020-02-24 | 2020-06-16 | 湖北湘纬新能源科技有限公司 | Formed nail die and processing method thereof |
| CN111283966B (en) * | 2020-02-24 | 2022-04-15 | 湖北湘纬新能源科技有限公司 | Formed nail die and processing method thereof |
| CN112477012A (en) * | 2020-11-09 | 2021-03-12 | 浙江后起模塑有限公司 | Motorcycle front panel injection mold |
| CN112477012B (en) * | 2020-11-09 | 2022-05-20 | 浙江后起模塑有限公司 | Motorcycle front panel injection mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |