CN109228146A - A kind of large-scale plastics article injection mold nozzle - Google Patents
A kind of large-scale plastics article injection mold nozzle Download PDFInfo
- Publication number
- CN109228146A CN109228146A CN201811106520.5A CN201811106520A CN109228146A CN 109228146 A CN109228146 A CN 109228146A CN 201811106520 A CN201811106520 A CN 201811106520A CN 109228146 A CN109228146 A CN 109228146A
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- Prior art keywords
- injection
- injection pipe
- inner cylinder
- runner
- end cover
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Classifications
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- 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
-
- 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
- B29C45/24—Cleaning equipment
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to injection mold technologies, disclose a kind of large-scale plastics article injection mold nozzle, in order to solve the problems, such as that it is ropy that injection molding caused by plastic flow property difference in primary rear plastics residual and molding mold cavity is completed in injection molding.The present invention includes nozzle body, the nozzle body includes inner cylinder and outer barrel, outer barrel is set in the outside of inner cylinder and has electric heating wire between inner cylinder and outer barrel, inner cylinder is separately provided for the first end cover being connected to injection molding machine and the second end cover for docking with injection mold with the both ends of outer barrel, runner is provided in inner cylinder, the sealing piston that can be slided in runner is provided in the runner, the first runner passed through for molten plastic is offered in the middle part of the sealing piston, jointing funnel-shaped is installed towards the sealing piston side of second end cover side, the second flow channel being connected to first runner is offered in jointing.
Description
Technical field
The invention belongs to injection mold technologies, and in particular to a kind of large-scale plastics article injection mold nozzle.
Background technique
Injection molding is a kind of method of industrial products production moulding, and product is usually using rubber injection mold and plastic injection, injection molding
Molding die platen press and casting die can also be dispensed, injection molding is that thermoplastic or thermosetting property material are utilized plastic shaping
Plastic products of various shapes are made in mold, and injection molding is realized by injection molding machine and mold.
During injection molding, plastic heating is melted and then pushes to nozzle by injection molding machine, by nozzle by the modeling of melting
Material is filled into the type chamber of mold.Simultaneously in order to keep temperature of the molten plastic in nozzle to prevent condensation the phenomenon that, spray
Mouth is also equipped with electric heating wire.
In the prior art also about the technical literature of the nozzle of injection mold, such as application No. is
201721389497.6 utility model patent disclose a kind of nozzle assembly and hot-runner injection mold device, nozzle assembly is used
In hot-runner injection mold device, nozzle assembly includes nozzle body and sealing ring, runs through in the nozzle body and is equipped with fluid
Channel, for being connected with hot flow path cavity, the sealing ring is arranged around the import for the import of the fluid channel, is used in combination
In being set between hot flow path ontology and the nozzle body, filled cavity, the inner surface of the sealing ring are equipped in the sealing ring
On offer through-hole and be connected with the filled cavity；Filled cavity is located in the sealing ring；Nozzle body is close to the sealing
The mounting surface of circle is recessed to form mounting groove, and the sealing ring is set in the mounting groove and protrudes from the mounting surface.
In another example application No. is 201720218008.4 utility model patents to disclose a kind of injection mold nozzle assembly,
Including nozzle body, nozzle body is divided into top and spray nozzle part, and top and spray nozzle part are connected along the longitudinal axis of nozzle body
Melt channel；It is equipped with heater around the outside of nozzle body, nozzle body is equipped with first partition, and first partition has the
One response characteristic, first partition is parallel to the longitudinal axial of nozzle body, and can apply pressure to nozzle body；Second partition
It is arranged between first partition and injection mold, second partition has the second response characteristic, and the second response characteristic is different from first
Response characteristic, when nozzle body is mounted on injection mold, the first and second partitions give nozzle body top and injection molding jointly
One sealing force of mold hot flow plate, the sealing force are adjustable according to operating temperature range.
However, existing nozzle is in use, due to having interval time between injection molding, even if the periphery tool of nozzle
There is heating coil, but heating coil also functions only as the effect of an auxiliary heating and thermal insulation, therefore after completing primary injection molding, nozzle
On the inner wall of runner still can residual fraction plastics, when carrying out injection molding next time, remaining plastics can confuse new note
Enter in plastics, and higher due to just having injected the plastics temperature come from injection molding machine, residual plastic and the plastics newly injected by
In the presence of the temperature difference, and in nozzle flow channel, residence time is shorter and cause mixing uneven, to influence the equal of injection molding
Even property.
Simultaneously when being molded large scale (the especially deeper outer dimension of depth is biggish) plastic part, due to needing
The molten plastic wanted is more, while being also to spurt into molten plastic by multiple nozzles, but due to infusing for large-scale plastics article
Mould can have cooling system, and therefore, under the action of cooling system, temperature can be reduced quickly the plastics after injection, together
When plus between the temperature and the molten plastic spurted into of injection mold itself there is certain temperature difference, lead to the plastics entered
Temperature quickly reduces, so that being unevenly distributed inside plastic part, the unequal injection molding problem of bubble, quality occurs.
Summary of the invention
The present invention completes in primary rear plastics residual and molding mold cavity caused by plastic flow property difference to solve injection molding
It is molded ropy problem, and a kind of large-scale plastics article injection mold nozzle is provided, it being capable of convection current after completing primary injection molding
The inner wall in road carries out automatic cleaning action, completes primary injection molding and is once cleaned to runner inner wall, to reduce molten plastic
Residual, improve the quality of injection molding；While the present invention is in use, additionally it is possible to change the length for protruding into die cavity, improve first
Mobility between the plastics of injection and the plastics being subsequently implanted into prevents the injection molding problem of bubble, quality unevenness.
In order to solve the technical problem, the technical scheme adopted by the invention is that:
A kind of large-scale plastics article injection mold nozzle, including nozzle body, the nozzle body include inner cylinder and outer barrel,
Outer barrel is set in the outside of inner cylinder and has electric heating wire between inner cylinder and outer barrel, and the two of inner cylinder and outer barrel
It holds and is separately provided for the first end cover being connected to injection molding machine and the second end cover for docking with injection mold, in inner cylinder
It is provided with runner, which is characterized in that the sealing piston that can be slided in runner, the sealing piston are provided in the runner
Middle part offer the first runner passed through for molten plastic, be equipped with towards the sealing piston side of second end cover side in funnel
The jointing of shape offers the second flow channel being connected to first runner in jointing, and it is single that first is equipped in second flow channel
To valve, the groove body for being mutually adapted with jointing is offered in the second end cover, the periphery of jointing is provided with
Limited block, be provided in groove body with the mutually matched travel switch of limited block, be equipped with for mutual with travel switch in groove body
Second check valve of connection is provided with the injector head being interconnected with groove body in second end cover, close to the inner cylinder of second end cover
The air inlet for being connected to external air source is offered on body；
The injector head includes the first injection pipe and the second injection pipe for being set in the first injection pipe, the end of the second injection pipe
It is connected with spray head, annular groove is provided in the first injection pipe, is arranged with nut in the middle part of annular groove, in the second injection pipe
Section is provided with the thread segment being mutually adapted with nut, the periphery of first injection pipe be provided be mounted on it is micro- in second end cover
Type servo motor, the periphery of the second injection pipe are additionally provided with driven gear, the output shaft of micro servo motor be provided with it is driven
The intermeshing driving gear of gear.
The both ends of the thread segment of second injection pipe are provided with the limited block for being mutually clamped with annular groove.
Second injection pipe of thread segment two sides and the inner wall of the first injection pipe are mutually slidingly sealed cooperation, the first injection pipe
Inside is provided with multiple sealing rings for sealing against each other with the second injection pipe.
The spray head includes head body, and the first injection channel is offered in the middle part of head body, the first injection channel
Periphery offers multiple second injection channels；Setting is in spherical or hemispherical appearance in the head body of the second injection pipe
Receive chamber, the first injection channel and the uniform accommodating chamber connection of the second injection channel.
Second injection channel is inclined to be provided in head body, and each second injection channel forms a helical form.
The sealing piston radial direction offers the third flow channel being interconnected with first runner, is arranged in third flow channel
There is the sealing-plug that can be slided in third flow channel, sealing-plug is equipped with compressed spring, on the inner cylinder of first end cover side
The passing away for offering and being mutually adapted with sealing-plug, the periphery of inner cylinder are provided with the collection being interconnected with passing away
Storehouse, collecting bin are communicated with negative-pressure pipeline.
The sealing-plug includes sequentially connected endpiece, path section, major diameter section and in spherical head, major diameter section and endpiece
Seal against each other cooperation with third flow channel, and the connection of major diameter section head end outer diameter it is identical with major diameter section, except path section
Endpiece on offer multiple circulation roads, the passing away includes the holding section for being mutually clamped with head, holding section
Periphery is equipped with the segmental arc that radius is greater than holding section, and segmental arc offers the discharge runner for being connected to collecting bin.
The sealing piston side of first end cover is provided with arc groove, first end cover is provided with mutually suitable with arc groove
The arc convex matched.
The course of work of the invention is:
When injection molding machine, which ejects molten plastic, enters runner, passing away is closed, and molten plastic pushes sealing piston one to start shipment
It moves to second end cover, jointing is mutually clamped with groove body at this time, and limited block triggers to form switch, so that second is unidirectional
Valve is opened, and the first check valve automatically turns under the action of molten plastic, and molten plastic sequentially passes through first runner, second
Runner, groove body, which enter, carries out injection molding operation in injector head；After completing primary injection molding, air inlet gas inlet hole pushes sealing piston anti-
To movement, limited block is separated with travel switch at this time, and the second check valve is automatically closed, and the first check valve is also at closing shape
State, sealing piston counter motion under the influence of air pressure, the molten plastic on inner cylinder inner wall is collected, sealing piston is worked as
When moving to passing away, sealing-plug is popped up under the action of compressed spring and is mutually clamped with holding section, and collection is melted
Melt plastics successively to enter in collecting bin and be collected by third flow channel, discharge runner under extruding and suction function, from
And the remaining plastics of inner cylinder inner wall are collected；When being once molded, molten plastic pushes sealing piston court
It is moved to second end cover, sealing-plug separates under squeezing action with passing away, and passing away is in close state, and so carries out
Recycle injection molding operation.
Second injection pipe of injector head is protruded into casting channel and is connected to the die cavity of injection mold, and the second injection pipe is spraying
When, micro servo motor drives driving gear rotation, driving driven gear rotation, so that the second injection pipe is first
Rotation, due to being equipped with nut in the first injection pipe, is provided with the spiral shell being mutually adapted with nut in injection pipe in the second injection pipe
Line section, so that the second injection pipe sprays in-pipe first, thus change the position of spray head, it can be in injection mold
Different location in die cavity is sprayed, so that the exit velocities of the molten plastic entered in the die cavity of injection mold are identical
With the uniformity of temperature, simultaneously as the structure of spray head designs so that molten plastic can not only from the first injection channel into
Enter, while the plastics around can also entering from the second injection channel and being formed in a helical form, with die cavity are impacted
And fusion.
Compared with prior art, the invention has the following advantages:
Large-scale plastics article of the invention injection mold nozzle, when injection molding machine, which ejects molten plastic, enters runner, discharge is logical
Road is closed, and molten plastic pushes sealing piston to move at second end cover together, and jointing is mutually clamped with groove body at this time, and
And limited block triggers to form switch, so that the second check valve is opened, the first check valve is automatic under the action of molten plastic
It opens, molten plastic, which sequentially passes through first runner, second flow channel, groove body and enters, carries out injection molding operation in injector head；Work as completion
After primary injection molding, air inlet gas inlet hole pushes sealing piston counter motion, and limited block is separated with travel switch at this time, and second is unidirectional living
Door is automatically closed, and the first check valve is also at closed state, sealing piston counter motion under the influence of air pressure, by inner cylinder
Molten plastic on inner wall is collected, when sealing piston moves to passing away, work of the sealing-plug in compressed spring
It is mutually clamped with lower pop-up and with holding section, the molten plastic of collection successively passes through third stream under extruding and suction function
Road, discharge runner are entered in collecting bin and are collected, so that the remaining plastics of inner cylinder inner wall are collected；When progress one
When secondary injection molding, molten plastic pushes sealing piston to move towards second end cover, and sealing-plug is logical with discharge under squeezing action
Road separation, passing away are in close state, and so carry out circulation injection molding operation.Therefore after the primary injection molding of every completion, by close
Automatic cleaning action can be carried out to the inner wall of inner cylinder by sealing piston, will be adhered to remaining plastics on inner cylinder inner wall and received
Collection and discharge, to guarantee the cleaning of inner cylinder inner wall, it is therefore prevented that the plastics of adherency are with the plastics injected next time due to mixing
Unevenly there is injection molding problem.
Second injection pipe of injector head is protruded into casting channel and is connected to the die cavity of injection mold, and the second injection pipe is spraying
When, micro servo motor drives driving gear rotation, driving driven gear rotation, so that the second injection pipe is first
Rotation, due to being equipped with nut in the first injection pipe, is provided with the spiral shell being mutually adapted with nut in injection pipe in the second injection pipe
Line section, so that the second injection pipe sprays in-pipe first, thus change the position of spray head, it can be in injection mold
Different location in die cavity is sprayed, so that the exit velocities of the molten plastic entered in the die cavity of injection mold are identical
With the uniformity of temperature, simultaneously as the structure of spray head designs so that molten plastic can not only from the first injection channel into
Enter, while the plastics around can also entering from the second injection channel and being formed in a helical form, with die cavity are impacted
And fusion.Compared with the prior art using spurting into from sprue gate, on the one hand the technology of molten plastic nature flowing forming can
Increase the mobility of molten plastic in die cavity, improves the uniformity of injection molding quality；On the other hand reduce the plastics that first inject with
It is subsequently implanted into the temperature difference of plastics, achievees the purpose that prevent from forming microbubble.It is final to realize that improving large-scale plastics article is molded quality
Purpose.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the partial enlarged view schematic diagram in Fig. 1 at A；
Fig. 3 is the partial enlarged view schematic diagram in Fig. 1 at B；
Fig. 4 is the partial enlarged view schematic diagram in Fig. 1 at C；
Fig. 5 is the partial enlarged view schematic diagram in Fig. 1 at D；
Marked in the figure: 1, outer barrel, 2, inner cylinder, 3, electric heating wire, 4, first end cover, 5, second end cover, 6, sealing piston, 7,
First runner, 8, jointing, 9, second flow channel, the 10, first check valve, 11, limited block, 12, travel switch, 13, second
Check valve, 14, injector head, the 1401, first injection pipe, the 1402, second injection pipe, 1403, annular groove, 1404, nut,
1405, thread segment, 1406, driven gear, 14014, micro servo motor, 1408, driving gear, 1409, limited block, 1410,
Head body, 1411, accommodating chamber, the 1412, first injection channel, the 1413, second injection channel, 15, third flow channel, 16, compression
Spring, 17, endpiece, 18, path section, 19, major diameter section, 20, head, 21, circulation road, 22, air inlet, 23, holding section, 24, arc
Shape section, 25, discharge runner, 26, collecting bin, 27, negative-pressure pipeline, 28, groove body, 29, arc groove, 30, arc convex, 31, stream
Road.
Specific embodiment
The present invention will be further described with reference to the examples below, and described embodiment is only present invention a part
Embodiment is not whole embodiment.Based on the embodiments of the present invention, those skilled in the art are not making
Other embodiments used obtained, belong to protection scope of the present invention under the premise of creative work.
In conjunction with attached drawing, large-scale plastics article of the invention injection mold nozzle, including nozzle body, the nozzle body packet
Inner cylinder 2 and outer barrel 1 are included, outer barrel 1 is set in the outside of inner cylinder 2 and has electric heating between inner cylinder and outer barrel
Silk 3, electric heating wire 3 are used to carry out heating and thermal insulation processing to inner cylinder, wherein be additionally provided on outer barrel 1 for electric heating wire
The wire guide that conducting wire passes through, those skilled in the art can be appreciated and understood that details are not described herein；Inner cylinder 2 and outer barrel 1
Both ends be separately provided for the first end cover 4 being connected to injection molding machine and the second end cover 5 for docking with injection mold, it is interior
It is provided with runner 31 in cylinder 2, the sealing piston 6 that can be slided in runner is provided in the runner 31, the sealing is lived
The middle part of plug 6 offers the first runner 7 passed through for molten plastic, is equipped with towards 6 side of sealing piston of 5 side of second end cover
Jointing 8 funnel-shaped offers the second flow channel 9 being connected to first runner 7, peace in second flow channel 9 in jointing 8
Equipped with the first check valve 10, the groove body 28 for being mutually adapted with jointing 8 is offered in the second end cover 5, is connected
The periphery of connector 8 is provided with limited block 11, is provided in groove body 28 and the mutually matched travel switch 12 of limited block 11, groove body 28
Inside be equipped with for second check valve 13 interconnected of travel switch 12, it is single by travel switch control second for being
Opening and closing to valve 13, when limited block 11 touches travel switch 12, travel switch controls the second check valve and is in
Open state, when limited block 11 is separated with travel switch 12, the second check valve 13 is automatically closed, in second end cover 5
It is provided with the injector head 14 being interconnected with groove body 28, offers and is used for and external air source on the inner cylinder 2 of second end cover 5
The air inlet 22 of connection；Wherein the first check valve and the second check valve belong to prior art products, play an one-way flow
Logical effect, on the contrary then cannot open, those skilled in the art can be appreciated and understood that details are not described herein.
The second injection pipe 1402 that the injector head 14 injection pipe 1401 and be set in the first injection pipe including first, the
The end of two injection pipes 1402 is connected with spray head 1410, is provided with annular groove 1403, annular groove in the first injection pipe 1401
1403 middle part is arranged with nut 1404, it is preferred that for the ease of processing in the actual production process, the first injection pipe is divided into
Two sections, two sections are joined together to form the first spray injection, it is preferred that and the junction of two stage split pipe is located at the installation place of nut,
It is so not only easy to process, but also convenient for assembling.The middle section of second injection pipe 1402, which is provided with, to be mutually adapted with nut 1404
The periphery of thread segment 1405, first injection pipe 1401 is provided with the micro servo motor being mounted in second end cover 5
14014, the periphery of the second injection pipe 1402 is additionally provided with driven gear 1406, the output shaft setting of micro servo motor 14014
Have and the intermeshing driving gear 1408 of driven gear 1406.Wherein, the length of driven gear 1406 is longer, in order to second
Injection pipe keeps the intermeshing of driven gear and driving gear in sliding process.
Preferably, mechanical interference, the both ends setting of the thread segment 1405 of second injection pipe 1402 are useful in order to prevent
In the limited block 1409 being mutually clamped with annular groove 1403, moving back for the second injection pipe is limited by the effect of limited block
Dynamic distance.
Second injection pipe 1402 of 1405 two sides of thread segment and the inner wall of the first injection pipe 1401 are mutually slidingly sealed cooperation,
The inside of first injection pipe 1401 is provided with multiple sealing rings for sealing against each other with the second injection pipe 1402.
As a kind of preferred mode of the present invention, the spray head 1410 includes head body, is opened up in the middle part of head body
There is the first injection channel 1412, the periphery of the first injection channel 1412 offers multiple second injection channels 1413.
Second injection channel 1413 is inclined to be provided in head body, and each second injection channel 1413 forms one
Helical form.
Setting is in spherical or hemispherical accommodating chamber 1411, the first spray in the head body of the second injection pipe 1402
Channel 1412 is penetrated to be connected to the uniform accommodating chamber 1411 of the second injection channel 1413.The present invention is by changing existing mold nozzle
Into enabling the plastics of melting to be sprayed from multiple directions, to accelerate the flowing of plastics in die cavity, improve the mixed of material
Close uniformity.
Preferably, be during injection molding due to large-scale plastics article using multiple sprue gates and meanwhile be poured by the way of,
In order to further increase the uniformity and mobility of molten plastic mixing, the second injection pipe 1402 on adjacent nozzle body
Direction of rotation is opposite.
As a kind of preferred mode of the present invention, installed on the excircle of the sealing piston 6 and sealing ring.
6 radial direction of sealing piston offers the third flow channel 15 being interconnected with first runner 7, third flow channel 15
It is inside equipped with the sealing-plug that can be slided in third flow channel 15, sealing-plug is equipped with compressed spring 16, as of the invention a kind of
One end of preferred mode, compressed spring is mounted in third flow channel 15 through cross, the other end and sealing-plug of compressed spring
It connects, the passing away for offering on the inner cylinder 2 of 4 side of first end cover and being mutually adapted with sealing-plug, outside inner cylinder 2
The collecting bin 26 for being provided with and being interconnected with passing away is enclosed, collecting bin 26 is communicated with negative-pressure pipeline 27, negative-pressure pipeline and outside
Negative-pressure air fan negative pressure is formed in collecting bin by the swabbing action of negative-pressure air fan, the plastics of collection are carried out by negative pressure
Recycling.
The sealing-plug includes sequentially connected endpiece 17, path section 18, major diameter section 19 and in spherical head 20, major diameter
Section 19 and endpiece 17 and third flow channel 15 seal against each other cooperation, it is preferred that the periphery of endpiece and/or major diameter section is provided with sealing
Circle, and major diameter section 19 connect 20 end of head outer diameter it is identical as major diameter section, opened up on the endpiece 17 except path section 18
There are multiple circulation roads 21, the passing away includes the holding section 23 for being mutually clamped with head 20, the periphery of holding section 23
It is greater than the segmental arc 24 of holding section equipped with radius, segmental arc 24 offers the discharge runner 25 for being connected to collecting bin 26, excellent
Choosing, valve is additionally provided in passing away, for controlling being turned on or off for passing away 25.
The course of work of sealing-plug of the invention is: during injection molding, the inner wall of head and inner cylinder contacts with each other,
At this point, molten plastic will not be discharged from third flow channel 15 due to the sealing function of sealing-plug, when sealing-plug head movement extremely
When holding section 23, under the action of compressed spring, head is mutually clamped with holding section, and major diameter section is stretched from third flow channel 15
Out, so that forming a channel between major diameter section 19 and segmental arc 24, plastics sequentially pass through circulation road out of third flow channel
21 enter segmental arc 24, are discharged from the passing away 25 of segmental arc 24.
Preferably, for the ease of the collection of plastics on inner cylinder inner wall, and whole discharges after collecting as far as possible, close to the
5 side of sealing piston of one end cap 4 is provided with arc groove 29, and first end cover 4 is provided with the arc being mutually adapted with arc groove 29
The plastics of collection are squeezed into third flow channel 15 and are discharged by the mutual cooperation of arc groove and arc convex by shape protrusion 30,
Improve the completeness of the plastic collection of adherency.
Claims (8)
1. a kind of large-scale plastics article injection mold nozzle, including nozzle body, the nozzle body include inner cylinder and outer cylinder
Body, outer barrel are set in the outside of inner cylinder and have electric heating wire, inner cylinder and outer barrel between inner cylinder and outer barrel
Both ends be separately provided for the first end cover being connected to injection molding machine and the second end cover for docking with injection mold, inner cylinder
It is provided with runner in vivo, which is characterized in that the sealing piston that can be slided in runner, the sealing are provided in the runner
The first runner passed through for molten plastic is offered in the middle part of piston, is equipped with towards the sealing piston side of second end cover side and is in
Funnelform jointing offers the second flow channel being connected to first runner in jointing, is equipped in second flow channel
One check valve offers the groove body for being mutually adapted with jointing in the second end cover, and the periphery of jointing is set
Be equipped with limited block, be provided in groove body with the mutually matched travel switch of limited block, be equipped in groove body and be used for and travel switch
Second check valve interconnected is provided with the injector head being interconnected with groove body in second end cover, close to second end cover
The air inlet for being connected to external air source is offered on inner cylinder；
The injector head includes the first injection pipe and the second injection pipe for being set in the first injection pipe, the end of the second injection pipe
It is connected with spray head, annular groove is provided in the first injection pipe, is arranged with nut in the middle part of annular groove, in the second injection pipe
Section is provided with the thread segment being mutually adapted with nut, the periphery of first injection pipe be provided be mounted on it is micro- in second end cover
Type servo motor, the periphery of the second injection pipe are additionally provided with driven gear, the output shaft of micro servo motor be provided with it is driven
The intermeshing driving gear of gear.
2. large-scale plastics article according to claim 1 injection mold nozzle, which is characterized in that second injection pipe
The both ends of thread segment are provided with the limited block for being mutually clamped with annular groove.
3. large-scale plastics article according to claim 1 injection mold nozzle, which is characterized in that the second of thread segment two sides
The inner wall of injection pipe and the first injection pipe is mutually slidingly sealed cooperation, and multiple be used for and second is provided on the inside of the first injection pipe
The sealing ring that injection pipe seals against each other.
4. large-scale plastics article according to claim 1 injection mold nozzle, which is characterized in that the spray head includes spray head
Ontology offers the first injection channel in the middle part of head body, and it is logical that the periphery of the first injection channel offers multiple second injections
Road；Setting is in spherical or hemispherical accommodating chamber, the first injection channel and second in the head body of the second injection pipe
The uniform accommodating chamber connection of injection channel.
5. large-scale plastics article according to claim 4 injection mold nozzle, which is characterized in that the inclination of the second injection channel
Be provided in head body, and each second injection channel formed a helical form.
6. large-scale plastics article according to claim 1 injection mold nozzle, which is characterized in that the sealing piston is radial
Direction offers the third flow channel being interconnected with first runner, and being equipped in third flow channel can slide in third flow channel
Sealing-plug, sealing-plug are equipped with compressed spring, offer on the inner cylinder of first end cover side and are mutually adapted with sealing-plug
Passing away, the periphery of inner cylinder is provided with the collecting bin being interconnected with passing away, and collecting bin is communicated with negative-pressure pipeline.
7. large-scale plastics article according to claim 6 injection mold nozzle, which is characterized in that the sealing-plug include according to
The endpiece of secondary connection, path section, major diameter section and cooperation is sealed against each other in spherical head, major diameter section and endpiece and third flow channel,
And the outer diameter of the head end of major diameter section connection is identical as major diameter section, and multiple circulations are offered on the endpiece except path section
Road, the passing away include the holding section for being mutually clamped with head, and the periphery of holding section is equipped with radius and is greater than holding section
Segmental arc, segmental arc offers the discharge runner for being connected to collecting bin.
8. large-scale plastics article according to claim 6 injection mold nozzle, which is characterized in that close to the close of first end cover
Envelope piston side is provided with arc groove, and first end cover is provided with the arc convex being mutually adapted with arc groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811106520.5A CN109228146A (en) | 2018-09-21 | 2018-09-21 | A kind of large-scale plastics article injection mold nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811106520.5A CN109228146A (en) | 2018-09-21 | 2018-09-21 | A kind of large-scale plastics article injection mold nozzle |
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| CN109228146A true CN109228146A (en) | 2019-01-18 |
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| CN201811106520.5A Withdrawn CN109228146A (en) | 2018-09-21 | 2018-09-21 | A kind of large-scale plastics article injection mold nozzle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112536979A (en) * | 2020-11-29 | 2021-03-23 | 武汉林溯科技有限公司 | Periodic switching type anti-blocking injection mold |
| CN115321457A (en) * | 2022-10-14 | 2022-11-11 | 江苏尚纯自动化技术有限公司 | Filling system with discharging compensation function and filling method thereof |
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2018
- 2018-09-21 CN CN201811106520.5A patent/CN109228146A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112536979A (en) * | 2020-11-29 | 2021-03-23 | 武汉林溯科技有限公司 | Periodic switching type anti-blocking injection mold |
| CN115321457A (en) * | 2022-10-14 | 2022-11-11 | 江苏尚纯自动化技术有限公司 | Filling system with discharging compensation function and filling method thereof |
| CN115321457B (en) * | 2022-10-14 | 2023-01-17 | 江苏尚纯自动化技术有限公司 | Filling system with discharging compensation function and filling method thereof |
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Application publication date: 20190118 |