CN109249586A - A kind of nozzle for preventing plastics to be cast - Google Patents
A kind of nozzle for preventing plastics to be cast Download PDFInfo
- Publication number
- CN109249586A CN109249586A CN201811155532.7A CN201811155532A CN109249586A CN 109249586 A CN109249586 A CN 109249586A CN 201811155532 A CN201811155532 A CN 201811155532A CN 109249586 A CN109249586 A CN 109249586A
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- China
- Prior art keywords
- needle
- nozzle
- cast
- plastics
- runner
- 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.)
- Granted
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- 229920003023 plastic Polymers 0.000 title claims abstract description 56
- 239000004033 plastic Substances 0.000 title claims abstract description 56
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 238000007599 discharging Methods 0.000 claims description 8
- 239000011324 bead Substances 0.000 claims description 7
- 230000014759 maintenance of location Effects 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000007766 curtain coating Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000001746 injection moulding Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000003763 carbonization Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 238000005491 wire drawing Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/20—Injection nozzles
- B29C45/23—Feed stopping equipment
- B29C45/231—Needle valve systems therefor
-
- 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
- B29C45/20—Injection nozzles
- B29C45/23—Feed stopping equipment
- B29C45/234—Valves opened by the pressure of the moulding material
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of nozzles for preventing plastics to be cast, including flanged joint body, middle body and sub- nozzle, one end of middle body offers the first pilot hole along its axis direction, spring, T-type spring stopper and needle are successively installed in first pilot hole, the vertical section of T-type spring stopper is threaded through in spring, and the traversing section of T-type spring stopper is abutted against with needle；Needle is made of integrally formed with needle rear end, needle body middle-end and needle body front end, and the head end of needle body front end is tapered, to fit with sub- nozzle；Needle side end face is provided with valve pocket, and needle body middle-end is slidably set in the second pilot hole on valve pocket.The nozzle for being used to that plastics to be prevented to be cast, anti-curtain coating effect is good, stable structure, novel design, long service life, and assembly is simple, and production cost is low, efficiently solves frequent flash inside nozzle, needle and the problem of valve pocket is stuck and frequent envelope does not live plastics.
Description
Technical field
The present invention relates to injection molding machine technical field, it is related to a kind of injection molding machine nozzle, more particularly to a kind of for preventing plastics
The nozzle of curtain coating.
Background technique
Currently, plastic industry competition is very fierce, the type of plastics is increasing, and additive types are more and more,
Ask also higher and higher, to have higher requirement, the most crucial component in injection molding machine the inside to the injection molding machine of production and processing plastics
It is exactly injection device, and most scabrous when producing some high-temperature engineering plastics is exactly nozzle curtain coating, wire drawing, Leng Zui, is production
In unstable one of most important factor.
Currently, most anti-curtain coating nozzle has design sufficiently complex in the market, as Chinese patent CN1061182603A is public
A kind of injection molding machine injection device is opened comprising expects pipe, expects pipe is interior to be equipped with screw rod, and the exit of expects pipe is equipped with nozzle, nozzle
Including the nozzle seat being connect with expects pipe, the nozzle head being connect with nozzle seat by connecting rod and setting nozzle seat and nozzle head it
Between nozzle connector, pass through the connection of the tension spring that is arranged along nozzle head axis direction, the knot between nozzle head and nozzle connector
The injection molding machine injection device of structure, after each injection, nozzle core blocks nozzle head, so as to prevent from continuing to flow out because of molten material
And wire drawing casting phenomenon is generated, and then improve product quality.As Chinese patent CN105397979 discloses a kind of injection molding machine use
Nozzle, by the valve body in the middle part of setting in flowing cavity, so that buffer spring is as inside, so that the outside of front nozzle body
Setting electric heating cover prevents cold burden from blocking to improve material spray effect.For another example Chinese patent CN202540612U discloses one kind
Leakproof injection nozzle structure, thimble can be axially actively set between ontology and nozzle head back and forth, and the head of the thimble is located at transfer
In chamber, the head of thimble is tapered, and spring is set in ontology, and the spring of tradition is replaced to be set to this external mode, with
So that the outer surface of the utility model is easy to install heating device additional.
The spray of the injection molding machine as disclosed in above-mentioned patent CN1061182603A, CN105397979 and CN202540612U
Mouth, the sufficiently complex, processing difficulties of generally existing design, cost be high and maintenance difficult, the disadvantages of failure-frequency is high, makes mostly
Several enterprises hangs back to such nozzle.
Summary of the invention
The technical problem to be solved by the present invention is to be directed to above-mentioned defect existing in the prior art, propose a kind of for preventing
The only nozzle of plastics curtain coating.
To achieve the above object, the invention adopts the following technical scheme:
The present invention provide it is a kind of for prevent plastics be cast nozzle, including sequentially connected flanged joint body, middle body and
One end of sub- nozzle, the middle body offers the first pilot hole along its axis direction, is successively installed in first pilot hole
The vertical section of spring, T-type spring stopper and needle, the T-type spring stopper is threaded through in the spring, the T-type spring catch
The traversing section of head is abutted against with the needle；The needle is by integrally formed and needle rear end, needle body middle-end and needle body front end
Composition, the head end of the needle body front end is tapered, to fit with the sub- nozzle；The needle side end face is provided with valve
Set, the needle body middle-end is slidably set in the second pilot hole on the valve pocket, the needle body front end in the spring or
It is tightly connected or separates with the injection runner of the sub- nozzle under the action of high-pressure smelting plastics.
Further, needle body middle-end periphery circumferential surface is equipped with retention bead, and the diameter of the needle body middle-end is slightly less than
The diameter of second pilot hole and the diameter of the retention bead are slightly larger than the diameter of second pilot hole.
Further, the diameter of the diameter of the needle body middle-end or second pilot hole is 2.5mm-50mm.
Further, be provided with inclined surface between the needle body middle-end and the needle body front end, the inclined surface with it is described
The axis direction of needle is in 30-120 ° of angle.
It is further preferred that the head end of the needle body front end is provided with the first cover glue；The periphery of the needle rear end
Face offers thread, and aft end is abutted against with the T-type spring stopper.
Further, upper interconnected first runner is successively offered along its axis direction in the flanged joint body to enter
Mouth, first runner and first runner outlet, the first runner entrance and first runner outlet are opening-like.
It is further preferred that being provided with the first thermoelectricity close to the first runner outlet port on the flanged joint body
It is even.
Further, it is offered on the middle body along its axis direction several around the second of first pilot hole arrangement
First runner outlet on runner, the second flow channel and the flanged joint body.
It is further preferred that another side end face of the middle body is provided with conical flow guiding body, several second flow channels are equal
Cloth is on the outside of the conical flow guiding body.
It is further preferred that being provided with the second thermocouple close to the second flow channel position on the middle body.
It is further preferred that offering several thirds around second pilot hole along its axis direction on the valve pocket
Runner, and the third flow channel is connected to second flow channel one-to-one correspondence.
It is further preferred that the valve pocket further include:
At least one is embedded the outer annular recess in the second pilot hole inner peripheral surface；
Several discharging channels being connected to the outer annular recess opened up along the valve pocket diametrical direction；
Several inner annular recess for being opened in the valve pocket outer end face, the inner annular recess are connected with the discharging channel；
And
Several location holes for being opened in the valve pocket side end face, the location hole be opened in determining for middle body side end face
Position hole is corresponding one by one, and passes through positioning pin connection.
Further, the valve pocket outer peripheral surface and both sides of the face edge are provided with the second sealing face.
Further, the diameter of the injection runner is 2.0mm-20mm.
Further, the tapered structure of sub- nozzle, is also provided with thereon:
One with the buffer runner that is connected to of injection runner, the buffer runner is tapered, and if on the valve pocket
Dry third flow channel connection；And
Several discharge gates corresponding with inner annular recess on the valve pocket.
Further, middle body outer sheath is equipped with spring heating coil.
Further, the outer diameter of the middle body is 20mm-150mm.
Further, the total length of the nozzle is 50mm-500mm.
The present invention by adopting the above technical scheme, compared with prior art, has the following technical effect that
The of the invention nozzle for preventing plastics to be cast, under the action of spring or high-pressure smelting plastics, by needle body front end with
The injection runner of sub- nozzle is tightly connected or separation, enters plastics smoothly in mold from the mesoporous of sub- nozzle, or seal modeling
Material does not outbound flow, to reach using purpose；And its anti-curtain coating effect is good, stable structure, novel design, long service life, dress
With simple, production cost is low；Solve frequent flash inside nozzle, needle with valve pocket is stuck does not live asking for plastics with frequent envelope
Topic, and solve the problems, such as that spring is easily stuck into carbonization after glue and is squeezed and be broken by transition.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of the nozzle for preventing plastics to be cast of the present invention；
Fig. 2 is a kind of partial structural diagram of the nozzle for preventing plastics to be cast of the present invention；
Fig. 3 is the structural schematic diagram of flanged joint body in a kind of nozzle for preventing plastics to be cast of the present invention；
Fig. 4 is the structural schematic diagram of needle in a kind of nozzle for preventing plastics to be cast of the present invention；
Fig. 5 is the structural schematic diagram of middle body in a kind of nozzle for preventing plastics to be cast of the present invention；
Fig. 6 is shown in Fig. 1 of the present invention for preventing plastics to be cast the schematic cross-sectional view of upper Section A-A；
Fig. 7 is shown in Fig. 1 of the present invention for preventing plastics to be cast the schematic cross-sectional view of upper section B-B；
Fig. 8 is the side structure schematic view of middle body in the nozzle for shown in Fig. 5 of the present invention being used to that plastics to be prevented to be cast；
Fig. 9 is the sectional structure signal in the section middle body C-C in the nozzle for shown in Fig. 8 of the present invention being used to that plastics to be prevented to be cast
Figure；
Figure 10 is the sectional structure signal in the section middle body D-D in the nozzle for shown in Fig. 8 of the present invention being used to that plastics to be prevented to be cast
Figure；
Wherein, each appended drawing reference are as follows:
10- flanged joint body, 11- first runner entrance, 12- first runner, the outlet of 13- first runner, the first thermoelectricity of 14-
It is even；Body in 20-, 21- second flow channel, 22- conical flow guiding body, the first pilot hole of 23-, the second thermocouple of 24-；30- nozzle,
31- sprays runner, 32- buffer runner, 33- discharge gate；40- spring；50-T type spring stopper；60- valve pocket, 61- second are assembled
Hole, 62- third flow channel, 63- outer annular recess, 64- inner annular recess, 65- discharging channel, 66- location hole, the second sealing face 67-；
70- needle, 71- needle rear end, 72- needle body middle-end, 73- needle body front end, 74- retention bead, the inclined-plane 75-, the first sealing of 76-
Face, 77- thread；80- spring heating coil.
Specific embodiment
The present invention is described in more detail below by specific embodiment, for a better understanding of the present invention,
But following embodiments are not intended to limit the scope of the invention.
As shown in Figs. 1-2, the present embodiment provides a kind of nozzles for preventing plastics to be cast, including sequentially connected flange
One end of connector 10, middle body 20 and sub- nozzle 30, the middle body 20 offers the first pilot hole 23 along its axis direction, described
Successively be installed with spring 40, T-type spring stopper 50 and needle 70 in first pilot hole 23, the T-type spring stopper 50 it is vertical
Section is threaded through in the spring 40, and traversing section and the needle 70 of the T-type spring stopper 50 abut against；The needle 70 by
Integrally formed to form with needle rear end 71, needle body middle-end 72 and needle body front end 73, the head end of the needle body front end 73 is in cone
Shape, to fit with the sub- nozzle 30；70 side end face of needle is provided with valve pocket 60, and the needle body middle-end 72 slidably covers
It is located in the second pilot hole 61 on the valve pocket 60, the needle body front end 73 is in the spring 40 or the work of high-pressure smelting plastics
It is tightly connected or is separated with the injection runner 31 of the sub- nozzle 30 with lower.
When melted plastics are by the first runner 12 of screw extruding to flanged joint body 10, then by middle body 20
Several second flow channels 21 flow in the reserved space between sub- nozzle 30 and needle 70, valve pocket 60, i.e., in buffer runner 32.When
Plastics can force back backward needle 70 compressed spring 40 after instantaneous pressure rises, the spray on the head of needle body front end 73 and sub- nozzle 30
Jet stream road 31 separates, and plastics smoothly enter in mold from the injection runner 31 of sub- nozzle 30；After screw of injection stops, buffering
The pressure reduction of molten plastic in runner 32, when plastics lost the pressure to needle 70, work of the needle 70 in spring 40
With lower forward movement, the injection runner 31 of the head of needle body front end 73 and sub- nozzle 30 is tightly connected, this needle 70 can be by resistance to height
The spring 40 of temperature, which is forced, to be back in situ and connect with the injection runner 31 in sub- nozzle 30, and is bonded with the inclined surface of buffer runner 32
And seal plastics and do not outbound flow, to reach using purpose.
In one embodiment, described as shown in figure 4,72 periphery circumferential surface of the needle body middle-end is equipped with retention bead 74
The diameter of needle body middle-end 72 is slightly less than the diameter of second pilot hole 61 and the diameter of the retention bead 74 slightly larger than institute
State the diameter of the second pilot hole 61.The diameter of the diameter of the needle body middle-end 72 or second pilot hole 61 is 3mm-30mm；
Preferably, the diameter of the diameter of middle-end 72 or second pilot hole 61 is 3mm-20mm；Preferably 5mm-14mm；.It solves
The problems such as valve needle cover is easily damaged, and maintenance cost is high.
In one embodiment, as shown in figure 4, being provided with inclination between the needle body middle-end 72 and the needle body front end 73
The axis direction of face 75, the inclined surface 75 and the needle 70 is in 30-120 ° of angle, preferably 30-60 °, more preferably 35-
50 °, most preferably 35-45 °.And the head end of the needle body front end 73 is provided with the first cover glue 76；The needle rear end 71
Outer peripheral surface offer thread 77, aft end is abutted against with the T-type spring stopper 50.
In one embodiment, it as shown in Fig. 3,7, is successively offered in the flanged joint body 10 along its axis direction
Be interconnected first runner entrance 11, first runner 12 and first runner outlet 13, the first runner entrance 11 and described the
One runner exit 13 is opening-like.And 13 positions are exported close to the first runner on the flanged joint body 10 and are provided with
First thermocouple 14.
In one embodiment, as shown in Fig. 1-2,5-6, several surround is offered along its axis direction on the middle body 20
The second flow channel 21 that first pilot hole 23 is arranged, the second flow channel 21 and the first runner on the flanged joint body 10
13 connection of outlet.The diameter of second flow channel 21 is 1-10mm, and number is 20-20, is evenly arranged on middle body 20.
Another side end face of the middle body 20 is provided with conical flow guiding body 22, and several second flow channels 21 are evenly arranged on described
22 outside of conical flow guiding body.And 21 position of second flow channel is provided with the second thermocouple 24 on the middle body 20.
In one embodiment, it offers as shown in Fig. 1-2,4, on the valve pocket 60 along its axis direction several around institute
The third flow channel 62 of the second pilot hole 61 is stated, and the third flow channel 62 is connected to the second flow channel 21 one-to-one correspondence.
In one embodiment, as seen in figs. 8-10, the valve pocket 60 further include: at least one is embedded in second dress
The outer annular recess 63 of 61 inner peripheral surface of distribution；It is several being opened up along 60 diametrical direction of valve pocket to be connected to the outer annular recess 63
Discharging channel 65；Several inner annular recess 64 for being opened in 60 outer end face of valve pocket, the inner annular recess 64 and the discharge are logical
Road 65 is connected；And several location holes 66 for being opened in 60 side end face of valve pocket, the location hole 66 be opened in it is described
The location hole of middle 20 side end face of body is corresponding one by one, and passes through positioning pin connection.70 material leakage of needle-valve is prevented, if any material leakage, material leakage
It is then discharged, is guaranteed from the discharge gate (33) on valve pocket (60) through discharging channel (65), inner annular recess (64) by outer annular recess 63
The normal operation of equipment.And 60 outer peripheral surface of valve pocket and both sides of the face edge are provided with the second sealing face 67, discharging channel
65 diameter is 1-10mm, and number is 1-20, is evenly arranged on valve pocket (60) interior diameter direction.The structure of the valve pocket 60 designs, solution
Spring 40 of having determined is easily stuck into being carbonized after glue, and the problem of squeezed and be broken by transition, and solves and often overflow inside nozzle
Material, needle 70 and the stuck the problem of not living plastics with frequent envelope of valve pocket 60.
In one embodiment, as shown in Fig. 1-2,6, the tapered structure of the sub- nozzle 30 is also provided with thereon: one with
The buffer runner 32 that the injection runner 62 is connected to, the buffer runner 32 is tapered, and with several the on the valve pocket 60
The connection of three runners 62；And several discharge gates 33 corresponding with inner annular recess 64 on the valve pocket 60.
In one embodiment, the diameter of the injection runner 31 is 2.0mm-20mm.20 outer sheath of the middle body is equipped with
Spring heating coil 80.The outer diameter of the middle body 20 is 20mm-150mm, preferably 30mm-100mm.The total length of the nozzle is
50mm-500mm, preferably 100mm-200mm.
As a preferred embodiment, a kind of assembly method of nozzle for preventing plastics to be cast is additionally provided, specifically
Include the following steps:
(1) first flanged joint body 10 is threadedly coupled with middle body 10, and screwed in the direction of the clock；
(2) then by after connection flanged joint body 10 and middle body 10 place vertically, then by alloy spring 40 be fitted into body
In 20, then will be in the loading of T-type spring stopper 50 40 one end of spring；
(3) needle 70 is packed into valve pocket 60, is integrally put into the first pilot hole 23 of middle body 20, by 60 valve pocket sides
Two location holes of 20 side end face of body in the alignment of location hole 66, and pass through positioning pin connection；
(4) sub- 30 vertical direction of nozzle and middle 20 clockwise direction of body are screwed again, and passes through bolt, discharge gate 33, the
Two fixation holes 64 are fixed by sub- nozzle 30 and valve pocket 60；
(5) finally package unit is put into expects pipe flange and reinforces successively urgent flanged joint body 10 clockwise and penetrated with son
Then the first thermocouple 14 and the second thermocouple 24 and spring heating coil 80 are loaded onto the spanner position of mouth 30.
The method for dismounting of the nozzle for being used to that plastics to be prevented to be cast is on the contrary by assembly method.
It is the nozzle for preventing plastics to be cast of needle-valve, housing configuration that this is preposition, and it is tired to solve body processing in previous nozzle
The problem of difficulty, needle and the extremely difficult processing of valve pocket are with assembly；Solve frequent flash inside nozzle, needle and valve pocket it is stuck with it is frequent
Envelope does not live the problem of plastics；The problem of it is easily stuck into carbonization after glue to solve spring, and is squeezed and is broken by transition；And it solves
The problems such as valve needle cover is easily damaged, and maintenance cost is high,
Specific embodiments of the present invention are described in detail above, but it is merely an example, the present invention is simultaneously unlimited
It is formed on particular embodiments described above.To those skilled in the art, any couple of present invention carries out equivalent modifications and
Substitution is also all among scope of the invention.Therefore, without departing from the spirit and scope of the invention made by equal transformation and
Modification, all should be contained within the scope of the invention.
Claims (16)
1. a kind of nozzle for preventing plastics to be cast, including sequentially connected flanged joint body (10), middle body (20) and son are penetrated
Mouth (30), which is characterized in that one end of the middle body (20) offers the first pilot hole (23) along its axis direction, and described first
Spring (40), T-type spring stopper (50) and needle (70), the T-type spring stopper (50) are successively installed in pilot hole (23)
Vertical section be threaded through in the spring (40), traversing section and the needle (70) of the T-type spring stopper (50) abut against；
The needle (70) is made of integrally formed with needle rear end (71), needle body middle-end (72) and needle body front end (73), the needle
The head end of body front end (73) is tapered, to fit with the sub- nozzle (30)；Needle (70) side end face is provided with valve
It covers (60), the needle body middle-end (72) is slidably set in the second pilot hole (61) on the valve pocket (60) Nei, the needle body
Front end (73) is close with the injection runner (31) of the sub- nozzle (30) under the action of the spring (40) or high-pressure smelting plastics
Envelope connects or separates.
2. the nozzle according to claim 1 for preventing plastics to be cast, which is characterized in that the needle body middle-end (72) is outside
Circumferential surface is equipped with retention bead (74), and the diameter of the needle body middle-end (72) is slightly less than the straight of second pilot hole (61)
Diameter and the diameter of the retention bead (74) are slightly larger than the diameter of second pilot hole (61).
3. the nozzle according to claim 2 for preventing plastics to be cast, which is characterized in that the needle body middle-end (72)
The diameter of diameter or second pilot hole (61) is 2.5mm-50mm.
4. it is according to claim 2 for prevent plastics be cast nozzle, which is characterized in that the needle body middle-end (72) with
It is provided with inclined surface (75) between the needle body front end (73), the inclined surface (75) and the axis direction of the needle (70) are in
30-120 ° of angle.
5. the nozzle according to claim 2 for preventing plastics to be cast, which is characterized in that the needle body front end (73)
Head end is provided with the first cover glue (76)；The outer peripheral surface of the needle rear end (71) offers thread (77), aft end with
The T-type spring stopper (50) abuts against.
6. the nozzle according to claim 1 for preventing plastics to be cast, which is characterized in that the flanged joint body (10)
It is interior successively to offer upper interconnected first runner entrance (11), first runner (12) and first runner outlet along its axis direction
(13), the first runner entrance (11) and first runner outlet (13) are opening-like.
7. the nozzle according to claim 6 for preventing plastics to be cast, which is characterized in that the flanged joint body (10)
It is upper that first runner outlet (13) position is provided with the first thermocouple (14).
8. the nozzle according to claim 1 for preventing plastics to be cast, which is characterized in that along it on the middle body (20)
Axis direction offer it is several around first pilot hole (23) arrangement second flow channels (21), the second flow channel (21) with
First runner outlet (13) connection on the flanged joint body (10).
9. it is according to claim 8 for prevent plastics be cast nozzle, which is characterized in that the middle body (20) it is another
Side end face is provided with conical flow guiding body (22), and several second flow channels (21) are evenly arranged on the outside of the conical flow guiding body (22).
10. the nozzle according to claim 8 for preventing plastics to be cast, which is characterized in that the middle body leans on (20)
Nearly second flow channel (21) position is provided with the second thermocouple (24).
11. the nozzle according to claim 8 for preventing plastics to be cast, which is characterized in that edge on the valve pocket (60)
Its axis direction offers several third flow channels (62) around second pilot hole (61), and the third flow channel (62) with
The second flow channel (21) corresponds connection.
12. the nozzle according to claim 11 for preventing plastics to be cast, which is characterized in that the valve pocket (60) is also wrapped
It includes:
At least one is embedded the outer annular recess (63) in the second pilot hole (61) inner peripheral surface；
Several discharging channels (65) being connected to the outer annular recess (63) opened up along the valve pocket (60) diametrical direction；
Several inner annular recess (64) for being opened in the valve pocket (60) outer end face, the inner annular recess (64) and the discharging channel
(65) it is connected；And
Several location holes (66) for being opened in the valve pocket (60) side end face, the location hole (66) and are opened in the middle body
(20) location hole of side end face is corresponding one by one, and passes through positioning pin connection.
13. the nozzle according to claim 12 for preventing plastics to be cast, which is characterized in that valve pocket (60) periphery
Face and both sides of the face edge are provided with the second sealing face (67).
14. the nozzle according to claim 1 for preventing plastics to be cast, which is characterized in that the injection runner (31)
Diameter be 2.0mm-20mm.
15. the nozzle according to claim 1 for preventing plastics to be cast, which is characterized in that the sub- nozzle (30) is in
Pyramidal structure is also provided with thereon:
One with the buffer runner (32) that is connected to of injection runner (62), the buffer runner (32) is tapered, and with the valve
Cover several third flow channels (62) connection on (60)；And
Several discharge gates (33) corresponding on the valve pocket (60) inner annular recess (64).
16. the nozzle according to claim 1 for preventing plastics to be cast, which is characterized in that on the outside of the middle body (20)
It is arranged with spring heating coil (80).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811155532.7A CN109249586B (en) | 2018-09-30 | 2018-09-30 | Nozzle for preventing plastic casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811155532.7A CN109249586B (en) | 2018-09-30 | 2018-09-30 | Nozzle for preventing plastic casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109249586A true CN109249586A (en) | 2019-01-22 |
| CN109249586B CN109249586B (en) | 2024-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811155532.7A Active CN109249586B (en) | 2018-09-30 | 2018-09-30 | Nozzle for preventing plastic casting |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110978413A (en) * | 2019-12-28 | 2020-04-10 | 况仁鹏 | Valve needle nozzle core structure for hot runner and hot runner system comprising same |
| CN112157864A (en) * | 2020-09-16 | 2021-01-01 | 扬州市职业大学(扬州市广播电视大学) | Rubber injection molding machine and molding method |
| 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 |
| CN113752498A (en) * | 2021-11-09 | 2021-12-07 | 佛山伊之密精密橡胶机械有限公司 | Plasticizing module and rubber machine |
| US20220305709A1 (en) * | 2021-03-25 | 2022-09-29 | The Japan Steel Works, Ltd. | Shut-off nozzle with needle valve, injection device and injection molding machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110978413A (en) * | 2019-12-28 | 2020-04-10 | 况仁鹏 | Valve needle nozzle core structure for hot runner and hot runner system comprising same |
| CN112157864A (en) * | 2020-09-16 | 2021-01-01 | 扬州市职业大学(扬州市广播电视大学) | Rubber injection molding machine and molding method |
| 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 |
| US20220305709A1 (en) * | 2021-03-25 | 2022-09-29 | The Japan Steel Works, Ltd. | Shut-off nozzle with needle valve, injection device and injection molding machine |
| US11911941B2 (en) * | 2021-03-25 | 2024-02-27 | The Japan Steel Works, Ltd. | Shut-off nozzle with needle valve, injection device and injection molding machine |
| CN113752498A (en) * | 2021-11-09 | 2021-12-07 | 佛山伊之密精密橡胶机械有限公司 | Plasticizing module and rubber machine |
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| CN109249586B (en) | 2024-04-30 |
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