CN207059080U - A kind of pneumatically-locked material mouth of needle valve - Google Patents
A kind of pneumatically-locked material mouth of needle valve Download PDFInfo
- Publication number
- CN207059080U CN207059080U CN201720970247.5U CN201720970247U CN207059080U CN 207059080 U CN207059080 U CN 207059080U CN 201720970247 U CN201720970247 U CN 201720970247U CN 207059080 U CN207059080 U CN 207059080U
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- CN
- China
- Prior art keywords
- seat
- sealing ring
- cover
- material mouth
- needle
- 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 - Fee Related
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- Portable Nailing Machines And Staplers (AREA)
Abstract
The utility model discloses a kind of pneumatically-locked material mouth of needle valve, including protecgulum, material mouth body, muzzle, cover for seat, piston, needle-valve, back seat, nut and screw rod.Expect that mouth body is provided with material chamber, discharging opening, runner and water channel, cover for seat is provided with air flue, the first air inlet, water channel, water inlet and delivery port, back seat is provided with runner, air flue and the second air inlet, protecgulum is enclosed on material mouth body, expect that mouth body is arranged on one end of cover for seat, back seat is arranged on the other end of cover for seat, muzzle and piston are arranged in cover for seat, needle-valve is fixed on piston by nut, protecgulum, expect mouth body, cover for seat, be fixed on by screw rod on back seat, water channel, air flue, runner communicate respectively.Raw material is cooled down toward water channel water flowing during injection, is ventilated toward the first air inlet, air pressure promotes piston needle-valve is separated from discharging opening, after the completion of injection, is ventilated from the second air inlet, air pressure promotes piston needle-valve is closed discharging opening, so as to prevent salivating.
Description
Technical field
A kind of injection machine material mouth is the utility model is related to, more particularly to a kind of pneumatically-locked material mouth of needle valve.
Background technology
When injection machine is molded, because raw material is in molten condition, good fluidity, after stopping being molded, although injection machine stops
Only pressurize, the raw material in barrel still has overbottom pressure, if blocking feeding mouth not in time, raw material can flow out from the charging aperture of die cavity, shape
Into curtain coating, the quality of product is influenceed.There are two kinds of main Types using needle-valve sealed material mouth at present, one kind is to set pin in material mouth
Valve, needle-valve top match with discharging opening, and needle-valve tail end sets spring, during injection, make needle-valve compression spring using the pressure of raw material
Moved after and, now raw material can be by nozzle, and after the completion of injection, injection machine stops pressurization, spring reset, promotes needle-valve closing charging
Mouthful.The advantages of this device be it is simple in construction, shortcoming be injection pressure must the sufficiently high active force that can just overcome spring, so as to
Nozzle is opened, high pressure can be such that raw material further heats, and cause the chemical changes such as degraded, this device, which is not particularly suitable for silica gel etc., to be needed
The raw material for wanting low temperature to be molded.Another kind is to drive needle-valve using external force, and this just needs a set of relative complex mechanical structure, this
Kind mode involves great expense, and maintenance cost is high.
The content of the invention
To overcome drawbacks described above, the utility model provides a kind of pneumatically-locked material mouth of needle valve, individually needle-valve can be controlled to beat
Opening and closing is closed, and can cool down material mouth during injection, stable and reliable for performance, so as to prevent raw material from overheating and salivation.
To reach above-mentioned purpose, the following technical scheme that the utility model uses：
A kind of pneumatically-locked material mouth of needle valve, including material mouth body, cover for seat, back seat and needle-valve, material mouth body are provided with material
Chamber and discharging opening, it is characterised in that material mouth body is located at one end of cover for seat, and back seat is located at the other end of cover for seat, and cover for seat is interior with expecting mouth
One end of body connection is provided with muzzle, and muzzle, cover for seat and back seat form cavity, be provided with piston in cavity, pin is fixed with piston
Valve, needle-valve are provided with the first air flue and the first air inlet communicated with the first air flue, the first gas through muzzle insertion material chamber, cover for seat
Road communicates with cavity, and back seat or cover for seat are provided with the second air flue and the second air inlet communicated with the second air flue, the second air flue and
Cavity communicates, and back seat is provided with first flow, and cover for seat is provided with second flow channel, and material mouth body is provided with third flow channel, first-class
Road, second flow channel, third flow channel communicate, and third flow channel communicates with material chamber, first flow, second flow channel and third flow channel composition stream
Road, runner are provided with more than one.Above structure, the raw material to come from injection machine extruding can along uniform flow passage reach discharging
Mouthful, when starting injection, ventilated toward the first air inlet, piston drives needle-valve to move backward under the influence of air pressure, needle-valve and discharging
Mouthful separation, after completing injection, stops ventilating toward the first air inlet, is ventilated toward the second air inlet, piston band under the influence of air pressure
Dynamic needle-valve moves forward, closes discharging opening.This device response is timely, simple to operate, dependable performance.
Further, the material mouth body is provided with protecgulum close to one end of discharging opening, and the first water channel is provided with material mouth body
With the second water channel, water cavity is provided between protecgulum and material mouth body, cover for seat is provided with the 3rd water channel, the 4th water channel, water inlet and gone out
The mouth of a river, water inlet, the 3rd water channel and the first water channel communicate, and the first water channel communicates with water cavity；Second water channel, the 4th water channel and water outlet
Mouth communicates, and the second water channel communicates with water cavity.By setting water channel and water cavity, cooling water can cool down the raw material in material mouth, be easy to control
The temperature of injection is made, to improve the quality of injecting products.
Further, protecgulum side is located on the protecgulum and expects to be provided with the second sealing ring chamber between this body side surface of mouth, the
Two sealing ring intracavitary are provided with the second sealing ring；The 3rd sealing ring chamber is provided between protecgulum end face and material mouth body end face, the
Three sealing ring intracavitary are provided with the 3rd sealing ring.By setting sealing ring between protecgulum side and material mouth this body side surface, can prevent
Cooling water leakage.
Further, between the end face that the material mouth body feeding mouth body contacts with cover for seat around the 4th water channel
Provided with the 4th sealing ring chamber, the 4th sealing ring intracavitary is provided with the 4th sealing ring；Material mouth body feeding mouth body contacts with cover for seat
The first sealing ring chamber is provided between end face around the 3rd water channel, the first sealing ring intracavitary is provided with the first sealing ring, expects mouth
The tenth sealing ring chamber is provided with around second flow channel between the end face that body contacts with cover for seat, the tenth sealing ring intracavitary is provided with
Tenth sealing ring.By setting sealing ring between the end face that material mouth body contacts with cover for seat, it can prevent cooling water and raw material from letting out
Leakage.
Further, the 6th sealing ring chamber is provided with the muzzle between the outer surface of muzzle and the inner surface of cover for seat, the
Six sealing ring intracavitary are provided with the 6th sealing ring, and the 5th sealing ring chamber and the are provided between the inner surface of muzzle and the outer surface of needle-valve
Seven sealing ring chambers, the 5th sealing ring intracavitary are provided with the 5th sealing ring, and the 7th sealing ring intracavitary is provided with the 7th sealing ring.By in mouth
Set between the outer surface of set and the inner surface of cover for seat between setting sealing ring and the inner surface of muzzle and the outer surface of needle-valve close
Seal, leakage of compressed gas can be prevented.
Further, the 8th sealing ring chamber is provided between the outer surface of the piston upper piston and the inner surface of cover for seat, the
Eight sealing ring intracavitary are provided with the 8th sealing ring.By setting sealing ring, energy between the outer surface of piston and the inner surface of cover for seat
The leakage of gas when preventing gas push piston.
Further, the 9th sealing ring chamber is provided between the two sides that back seat contacts with cover for seat on the back seat, the 9th is close
Seal intracavitary is provided with the 9th sealing ring；The 11st sealing ring is provided between the both ends of the surface that back seat contacts with cover for seat around first flow
Chamber, the 11st sealing ring intracavitary are provided with the 11st sealing ring.By being set between the two sides and end face that are contacted in back seat with cover for seat
Sealing ring is put, can prevent compressed gas and raw material from leaking.
Further, the front end of the needle-valve is taper, and tail end is provided with screw thread, and screw thread is provided with nut, and needle-valve passes through spiral shell
Mother is fixed on piston.It is connected using nut, it is simple in construction, it is fixed reliable.
Further, the protecgulum, material mouth body and cover for seat are fixed on back seat by screw rod.This structure setting is fixed
Reliably, convenient disassembly, it is easy to repair.
Brief description of the drawings
Fig. 1 is the sectional view of the utility model air flue and water channel.
Fig. 2 is the sectional view of the utility model runner.
Fig. 3 is structural representation of the present utility model.
Embodiment
In order to be more clearly understood that technical scheme provided by the utility model, below in conjunction with the accompanying drawings with specific embodiment to this
Utility model is described further.
As shown in Figure 1 to Figure 3, the pneumatically-locked material mouth of a kind of needle valve, including protecgulum 1, material mouth body 2, muzzle 3, cover for seat
6th, piston 5, needle-valve 4, back seat 7, nut 9 and screw rod 8.
The second sealing ring chamber 12 is provided between the side of protecgulum 1 and the side of material mouth body 2 on protecgulum 1, positioned at the end of protecgulum 1
The 3rd sealing ring chamber 13 is provided between face and the end face of material mouth body 2.
Expect that mouth body 2 is provided with material chamber 21, discharging opening 22, third flow channel 25, the first water channel 23 and the second water channel 27, expect mouth
Be provided with the 4th sealing ring chamber 24 between the end face that body 2 contacts with cover for seat 6 around the second water channel 27, material mouth body 2 and
The first sealing ring chamber 28 is provided between the end face that cover for seat 6 contacts around the first water channel 23, material mouth body 2 connects with cover for seat 6
Between tactile end face the tenth sealing ring chamber 210 is provided with around second flow channel 62.
The 6th sealing ring chamber 32, the interior table of muzzle 3 are provided with muzzle 3 between the inner surface of the outer surface of muzzle 3 and cover for seat 6
The 5th sealing ring chamber 31 and the 7th sealing ring chamber 33 are provided between face and the outer surface of needle-valve 4.
Cover for seat 6 is provided with the first air flue 67, the first air inlet 68, the 3rd water channel 64, the 4th water channel 69, water inlet 65 and goes out
The mouth of a river 66.
The 8th sealing ring chamber 51 is provided between the outer surface of the upper piston 5 of piston 5 and the inner surface of cover for seat 6.
Back seat 7 is provided with first flow 72, the second air flue 73 and the second air inlet 74, the both sides that back seat 7 contacts with cover for seat 6
The 9th sealing ring chamber 75 is provided between face, is provided between the both ends of the surface that back seat 7 contacts with cover for seat 6 around first flow 72
11st sealing ring chamber 77.
During assembling, the 5th sealing ring 34 is loaded by the 6th sealing ring chamber 32 that the 6th sealing ring 35 is loaded on muzzle 3
Five sealing ring chambers 31, the 7th sealing ring 36 is loaded into the 7th sealing ring chamber 33, then loaded muzzle 3 in cover for seat 6；Again by the 4th
Sealing ring 26 loads the 4th sealing ring chamber 24, the tenth sealing ring 211 is loaded into the tenth sealing ring chamber 210, by the first sealing ring 29
Load the first sealing ring chamber 28, cover for seat 6 and material mouth body be assembled together, communicate the first water channel 23 and the 3rd water channel 64,
Communicate the second water channel 27 and the 4th water channel 69.The tail end of needle-valve 4 is inserted into piston 5, needle-valve 4 is fixed on piston 5 with nut 9
On, the 8th sealing ring 52 is mounted in the 8th sealing ring chamber 51 on piston 5, then piston 5 is loaded in the cavity 61 of cover for seat 6,
The top of needle-valve 4 is set to be stretched into through muzzle 3 in the material chamber 21 of material mouth body 2.The 9th that 9th sealing ring 76 is loaded on back seat 7
In sealing ring chamber 75, the 11st sealing ring 78 is loaded on back seat 7 in the 11st sealing ring chamber 77, then by back seat 7 and the phase of cover for seat 6
Even, first flow 72 is made to be communicated with second flow channel 62.Second sealing ring 14 is loaded in the second sealing ring chamber 12 on protecgulum 2,
3rd sealing ring 15 is loaded in the 3rd sealing ring chamber 13 on protecgulum 2, then protecgulum 1 is sleeved on material mouth body 2, by spiral shell
Bar 8 sequentially passes through protecgulum 1, material mouth body 2, cover for seat 6 and is fixed on back seat 7.
The pneumatically-locked material mouth of above-mentioned needle valve is fixed on the barrel of injection machine, it is logical toward water inlet 65 when starting injection
Cooling water, cooling water flow through the 3rd water channel 64 and the first water channel 23 and enter water cavity 11, then through the second water channel 27 and the 4th water channel 69,
Flowed out from delivery port 66.Lead to compressed gas toward the first air inlet 68, gas enters cavity 61, and piston 5 is past under the influence of air pressure
The direction of back seat 7 is moved, and now needle-valve 4 departs from the contact of feeding mouth 22.Screw in injection molding machine extrudes raw material, and raw material flows through first
Runner 72, second flow channel 62 and third flow channel 25 enter pan feeding chamber 21, are extruded from discharging opening 22, into mould.After the completion of injection, stop
Only lead to compressed gas toward the first air inlet 68, lead to compressed gas toward the second air inlet 74, gas enters cavity 61, and piston 5 is in gas
Moved in the presence of pressure toward the direction of muzzle 3, promote needle-valve 4 to seal discharging opening 22.Prevent raw material from being flowed out from discharging opening 22, cause to flow
Saliva.First flow 72, second flow channel 62 and third flow channel 25 form runner, and runner sets one or more, preferably the symmetrical cloth of even numbers
Put, with balanced feed pressure, extend material mouth service life.Above scheme is set, simple in construction, effectively reduces using complicated machinery
The cost of structure control needle-valve, by setting cooling water channel, especially suitable silica type needs the raw material that low temperature is molded, can significantly carried
High injecting products quality.
Claims (9)
1. a kind of pneumatically-locked material mouth of needle valve, including material mouth body（2）, cover for seat（6）, back seat（7）And needle-valve（4）, expect mouth sheet
Body（2）It is provided with material chamber（21）And discharging opening（22）, it is characterised in that：Expect mouth body（2）It is located at cover for seat（6）One end, back seat
（7）It is located at cover for seat（6）The other end, cover for seat（6）Interior and material mouth body（2）One end of connection is provided with muzzle（3）, muzzle（3）, seat
Set（6）And back seat（7）Form cavity（61）, cavity（61）It is interior to be provided with piston（5）, piston（5）On be fixed with needle-valve（4）, needle-valve
（4）Through muzzle（3）Insertion material chamber（21）, cover for seat（6）It is provided with the first air flue（67）With with the first air flue（67）Communicated
One air inlet（68）, the first air flue（67）With cavity（61）Communicate, the first air flue（67）Positioned at piston（5）Side, back seat（7）
Or cover for seat（6）It is provided with the second air flue（73）With with the second air flue（73）The second air inlet communicated（74）, the second air flue（73）
And cavity（61）Communicate, the second air flue（73）Positioned at piston（5）Opposite side, back seat（7）It is provided with first flow（72）, cover for seat
（6）It is provided with second flow channel（62）, expect mouth body（2）It is provided with third flow channel（25）, first flow（72）, second flow channel
（62）, third flow channel（25）Communicate, third flow channel（25）With expecting chamber（21）Communicate, first flow（72）, second flow channel（62）With
Third flow channel（25）Runner is formed, runner is provided with more than one.
A kind of 2. pneumatically-locked material mouth of needle valve according to claim 1, it is characterised in that the material mouth body（2）It is close
Discharging opening（22）One end be provided with protecgulum（1）, expect mouth body（2）Inside it is provided with the first water channel（23）With the second water channel（27）, protecgulum
（1）With expecting mouth body（2）Between be provided with water cavity（11）, the cover for seat（6）It is provided with the 3rd water channel（64）, the 4th water channel（69）、
Water inlet（65）And delivery port（66）, water inlet（65）, the 3rd water channel（64）With the first water channel（23）Communicate, the first water channel（23）
With water cavity（11）Communicate；Second water channel（27）, the 4th water channel（69）And delivery port（66）Communicate, the second water channel（27）With water cavity
（11）Communicate.
A kind of 3. pneumatically-locked material mouth of needle valve according to claim 2, it is characterised in that the protecgulum（1）On be located at before
Lid（1）Side and material mouth body（2）The second sealing ring chamber is provided between side（12）, the second sealing ring chamber（12）Inside it is provided with second
Sealing ring（14）；Positioned at protecgulum（1）End face and material mouth body（2）The 3rd sealing ring chamber is provided between end face（13）, the 3rd sealing
Enclose chamber（13）Inside it is provided with the 3rd sealing ring（15）.
A kind of 4. pneumatically-locked material mouth of needle valve according to claim 1, it is characterised in that the material mouth body（2）Feeding
Mouth body（2）With cover for seat（6）It is located at the second water channel between the end face of contact（27）Around be provided with the 4th sealing ring chamber（24）, the
Four sealing ring chambers（24）Inside it is provided with the 4th sealing ring（26）；Expect mouth body（2）Feeding mouth body（2）With cover for seat（6）The end of contact
It is located at the first water channel between face（23）Around be provided with the first sealing ring chamber（28）, the first sealing ring chamber（28）It is close to be inside provided with first
Seal（29）；Expect mouth body（2）With cover for seat（6）It is located at third flow channel between the end face of contact（25）Around be provided with the tenth sealing
Enclose chamber（210）, the tenth sealing ring chamber（210）Inside it is provided with the tenth sealing ring（211）.
A kind of 5. pneumatically-locked material mouth of needle valve according to claim 1, it is characterised in that the muzzle（3）Upper muzzle
（3）Outer surface and cover for seat（6）Inner surface between be provided with the 6th sealing ring chamber（32）, the 6th sealing ring chamber（32）Inside it is provided with
Six sealing rings（35）, muzzle（3）Inner surface and needle-valve（4）Outer surface between be provided with the 5th sealing ring chamber（31）It is close with the 7th
Seal chamber（33）, the 5th sealing ring chamber（31）Inside it is provided with the 5th sealing ring（34）, the 7th sealing ring chamber（33）It is close to be inside provided with the 7th
Seal（36）.
A kind of 6. pneumatically-locked material mouth of needle valve according to claim 1, it is characterised in that the piston（5）Upper piston
（5）Outer surface and cover for seat（6）Inner surface between be provided with the 8th sealing ring chamber（51）, the 8th sealing ring chamber（51）Inside it is provided with
Eight sealing rings（52）.
A kind of 7. pneumatically-locked material mouth of needle valve according to claim 1, it is characterised in that the back seat（7）Upper back seat
（7）With cover for seat（6）The 9th sealing ring chamber is provided between the two sides of contact（75）, the 9th sealing ring chamber（75）It is close to be inside provided with the 9th
Seal（76）；Back seat（7）With cover for seat（6）First flow between the both ends of the surface of contact（72）Surrounding is provided with the 11st sealing ring chamber
（77）, the 11st sealing ring chamber（77）Inside it is provided with the 11st sealing ring（78）.
A kind of 8. pneumatically-locked material mouth of needle valve according to claim 1, it is characterised in that the needle-valve（4）Front end be
Taper, tail end are provided with screw thread, and screw thread is provided with nut（9）, needle-valve（4）Pass through nut（9）It is fixed on piston（5）On.
A kind of 9. pneumatically-locked material mouth of needle valve according to claim 2, it is characterised in that the protecgulum（1）, material mouth sheet
Body（2）And cover for seat（6）Pass through screw rod（8）It is fixed on back seat（7）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720970247.5U CN207059080U (en) | 2017-08-04 | 2017-08-04 | A kind of pneumatically-locked material mouth of needle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720970247.5U CN207059080U (en) | 2017-08-04 | 2017-08-04 | A kind of pneumatically-locked material mouth of needle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207059080U true CN207059080U (en) | 2018-03-02 |
Family
ID=61519707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720970247.5U Expired - Fee Related CN207059080U (en) | 2017-08-04 | 2017-08-04 | A kind of pneumatically-locked material mouth of needle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207059080U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356658A (en) * | 2019-08-07 | 2019-10-22 | 广州市耐力环保科技有限公司 | Feeding machanism is used in a kind of production of sealant |
| CN110900980A (en) * | 2019-11-22 | 2020-03-24 | 南通市通州区三槐机械制造有限公司 | Automatic hose shoulder injection machine and plastic spitting mechanism thereof |
| CN112476974A (en) * | 2020-12-22 | 2021-03-12 | 安徽省灵磁新材料科技股份有限公司 | Pneumatic nozzle mechanism of injection molding machine for producing magnetic plastics |
-
2017
- 2017-08-04 CN CN201720970247.5U patent/CN207059080U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356658A (en) * | 2019-08-07 | 2019-10-22 | 广州市耐力环保科技有限公司 | Feeding machanism is used in a kind of production of sealant |
| CN110900980A (en) * | 2019-11-22 | 2020-03-24 | 南通市通州区三槐机械制造有限公司 | Automatic hose shoulder injection machine and plastic spitting mechanism thereof |
| CN110900980B (en) * | 2019-11-22 | 2021-08-27 | 南通市通州区三槐机械制造有限公司 | Automatic hose shoulder injection machine and plastic spitting mechanism thereof |
| CN112476974A (en) * | 2020-12-22 | 2021-03-12 | 安徽省灵磁新材料科技股份有限公司 | Pneumatic nozzle mechanism of injection molding machine for producing magnetic plastics |
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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: 20180302 |
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| CF01 | Termination of patent right due to non-payment of annual fee |