CN109435171A - Applied to the hot flow path cylinder of integrated system and with its hot runner system - Google Patents
Applied to the hot flow path cylinder of integrated system and with its hot runner system Download PDFInfo
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- CN109435171A CN109435171A CN201811556242.3A CN201811556242A CN109435171A CN 109435171 A CN109435171 A CN 109435171A CN 201811556242 A CN201811556242 A CN 201811556242A CN 109435171 A CN109435171 A CN 109435171A
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- hot flow
- chamber
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- 230000001360 synchronised effect Effects 0.000 claims abstract description 5
- 238000002955 isolation Methods 0.000 claims description 17
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 7
- 208000002925 dental caries Diseases 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000003447 ipsilateral effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007787 solid Substances 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2806—Closure devices therefor consisting of needle valve systems
- B29C45/281—Drive means 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2806—Closure devices therefor consisting of needle valve systems
- B29C45/281—Drive means therefor
- B29C2045/2841—Needle valves driven by a plurality of coaxial pistons
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of hot flow path cylinder applied to integrated system and with its hot runner system, the inside of cylinder body in the hot flow path cylinder is axially provided with the first, second plunger shaft, and being respectively arranged in the first, second plunger shaft can be along the first, second piston for doing axially reciprocating；First piston chamber is divided into the first and second cavity by first piston, and second piston chamber is divided into third, the 4th cavity, is connected between the first and third cavity by channel by second piston；When first piston does axially reciprocating along first piston chamber, the first venthole in first piston cavity wall is connected to the first cavity always, third venthole is connected to the second cavity always；When second piston does axially reciprocating along second piston chamber, the second venthole in second piston cavity wall is connected to the 4th cavity always；The first, piston is fixedly connected and synchronous reciprocating is kept to move.The hot flow path cylinder has the perspective plane on die horizontal face small, the big advantage of thrust.
Description
Technical field
The present invention relates to hot runner mould technical field more particularly to a kind of hot flow path cylinder and tool applied to integrated system
There is its hot runner system.
Background technique
Hot flow path cylinder is common power device in hot runner system, usually does reciprocal fortune with hot flow path cylinder come valve needle
It is dynamic, and then to be opened and closed hot nozzle.Gas hot flow path cylinder has the advantages that more to clean, and starts to be widely used, but air heat
The thrust of runner cylinder is often smaller.Its usual structure is provided with plunger shaft in cylinder body 4, in work as shown in Figure 1, including cylinder body 4
It is provided with piston 43 in plug chamber, piston 43 can move reciprocatingly along the axial direction of plunger shaft, and piston 43 divides plunger shaft
For upper piston chamber 41 and lower piston chamber 42, it is respectively provided with the through-hole being connected with plunger shaft in the cavity wall of upper and lower plunger shaft, makes
Used time adjusts the air pressure in upper and lower plunger shaft by through-hole to drive the movement of piston 43 in the axial direction.
Here, the air pressure in (1) upper piston chamber 41 is equal to P1, and the air pressure in lower piston chamber 42 is equal to atmospheric pressure Pa, piston
43 cross-sectional area is S1, and the cross-sectional area of the piston rod of 43 downside of piston is S2.Here, P1 > atmospheric pressure Pa, the then hot flow path
Downward thrust F1=P1*S1-Pa* (S1-S2)-total frictional force caused by cylinder；(2) air pressure in upper piston chamber 41 is equal to big
Air pressure Pa, the air pressure in lower piston chamber 42 are equal to P1, and the cross-sectional area of piston 43 is S1, the piston rod of 43 downside of piston it is transversal
Area is S2, here, P1 > atmospheric pressure Pa, then thrust F2=P1* (S1-S2)-Pa*S1- upward caused by the hot flow path cylinder
Total frictional force.
It is found that there are two types of approach to increase thrust F:(1) in through hole use " booster pump " equipment, to adjust upper piston chamber
The air pressure P2 in air pressure P1 or lower piston chamber 42 in 41, but this will increase the cost of hot runner system；(2) increase S1, that is, increase
The area of the cross section of big hot flow path cylinder, but in practice, due to the limitation of usage scenario, it is desirable that the cylinder diameter of gas hot flow path cylinder
It is smaller, that is, require cross section smaller.
Therefore, the hot flow path cylinder that a kind of cylinder diameter is small and thrust is big how is designed, a urgent problem to be solved is just become.
Summary of the invention
The purpose of the present invention is to provide a kind of hot flow path cylinder applied to integrated system and the hot flow path systems with it
System.
One of in order to achieve the above-mentioned object of the invention, an embodiment of the present invention provides a kind of applied to integrated system
Hot flow path cylinder, the hot flow path cylinder are moved for valve needle, comprising: the inside of cylinder body, the cylinder body is axially provided with
First piston chamber and second piston chamber are provided between first, second plunger shaft for the first, second plunger shaft to be isolated
Isolation board；The first piston that axially reciprocating can be done along first piston chamber is provided in first piston chamber,
The second piston that axially reciprocating can be done along second piston chamber is provided in two plunger shafts；First piston is by first piston
Chamber is divided into the first cavity and the second cavity, and second piston chamber is divided into third cavity and the 4th cavity, and by second piston
Two cavitys and third cavity are located at the two sides of isolation board, are connected between the first cavity and third cavity by channel；The
It is provided with the first venthole and third venthole in the cavity wall of one plunger shaft, and does axial direction along first piston chamber in first piston
When reciprocating motion, the first venthole is connected to the first cavity always, third venthole is connected to the second cavity always；On second piston edge
Second piston chamber when doing axially reciprocating, the second venthole is connected to the 4th cavity always；First piston and second piston are solid
Fixed connection and keep synchronous reciprocating movement in the axial direction, and can valve needle move reciprocatingly in the axial direction.
As the further improvement of an embodiment of the present invention, it is provided with the first through hole on the isolation board, described
One piston includes connected first end and the second end, and first end is set in first piston chamber, and the second end is set to
In first through hole, the cross-sectional area of first end is greater than the cross-sectional area of the second end, in the second end far from the
The other end of one end is fixedly attached to second piston；When first piston moves reciprocatingly in the axial direction, the week of first end
Edge matches with the first piston inner cavity surface, and the periphery of the second end matches with first through internal surface of hole.
As the further improvement of an embodiment of the present invention, the first end is overlapped with the central axes of the second end.
As the further improvement of an embodiment of the present invention, first end and second end are run through in the channel in the axial direction
Portion.
As the further improvement of an embodiment of the present invention, the periphery of first end and the first piston inner cavity surface
Between and/or the periphery and first of the second end be formed with elastic component between the internal surface of hole.
As the further improvement of an embodiment of the present invention, being set relative to the isolation board in the second piston chamber
The second through hole is provided on the pedestal set；The second piston includes connected third end and the 4th end, third end
It is set in second piston chamber, the 4th end is set in the second through hole, and the cross-sectional area of third end is greater than the described 4th
The cross-sectional area of end；When second piston moves reciprocatingly in the axial direction, the periphery of third end and the second piston chamber
Inner surface matches, and the periphery of the 4th end matches with second through internal surface of hole.
As the further improvement of an embodiment of the present invention, the 4th end is formed with far from one end of third end
For connecting the needle hanging platform of the needle.
As the further improvement of an embodiment of the present invention, the third end is overlapped with the central axes of the 4th end.
As the further improvement of an embodiment of the present invention, the first end, the second end, third end and the 4th
The central axes of end are overlapped.
The embodiment of the invention also provides a kind of hot runner system, described including above-mentioned hot flow path cylinder and hot nozzle component
Hot nozzle component includes the needle and hot nozzle ontology, and the hot flow path cylinder drives the relatively described hot nozzle ontology of needle to do axial direction
It moves back and forth.
Compared with the existing technology, the technical effects of the invention are that: the embodiment of the invention provides one kind be applied to it is whole
The inside of the hot flow path cylinder of formula system and hot runner system with it, the cylinder body in the hot flow path cylinder is axially provided with
First, second plunger shaft, being respectively arranged in the first, second plunger shaft can be along doing first, the of axially reciprocating
Two pistons；First piston chamber is divided into the first and second cavity by first piston, second piston by second piston chamber be divided into third,
4th cavity passes through channel between the first and third cavity and is connected to；Axially reciprocating is done along first piston chamber in first piston
When, the first venthole in first piston cavity wall is connected to the first cavity always, third venthole is connected to the second cavity always；?
When two pistons do axially reciprocating along second piston chamber, the second venthole in second piston cavity wall is connected to the 4th chamber always
Body；The first, piston is fixedly connected and synchronous reciprocating is kept to move.The hot flow path cylinder has the perspective plane on die horizontal face small,
The big advantage of thrust.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of hot flow path cylinder in the prior art；
Fig. 2A is the top view of the hot flow path cylinder in the embodiment of the present invention；
Fig. 2 B is the schematic perspective view of the hot flow path cylinder in the embodiment of the present invention；
Fig. 3 is first cross-sectional view of the hot flow path cylinder in Fig. 2A along section EE；
Fig. 4 is second cross-sectional view of the hot flow path cylinder in Fig. 2A along section EE；
Fig. 5 is sectional block diagram of the hot flow path cylinder in Fig. 2A along section EE；
Fig. 6 is section view explosive view of the hot flow path cylinder in Fig. 2A along section EE；；
Fig. 7 is the explosive view of the hot flow path cylinder in the embodiment of the present invention.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to various embodiments shown in the accompanying drawings.But these embodiments are not
The limitation present invention, structure that those skilled in the art are made according to these embodiments, method or change functionally
It changes and is included within the scope of protection of the present invention.
The term of the representation space relative position used herein such as "upper", " top ", "lower", " lower section " is for just
A unit as shown in the drawings or feature are described relative to another unit or the relationship of feature in the purpose of explanation.It is empty
Between the term of relative position can be intended to include different direction of the equipment in use or work other than orientation as shown in the figure.
For example, the unit for being described as being located at other units or feature " below " or " under " will if the equipment in figure overturn
Positioned at other units or feature " top ".Therefore, exemplary term " lower section " can include above and below both orientation.If
It is standby to be otherwise directed (be rotated by 90 ° or other directions), and be interpreted accordingly used herein with space correlation
Language is described.
Also, it should be understood that although term first, second etc. can be used to describe herein various elements or
Structure, but these are described object and should not be limited by these terms.These terms are only used to by these description objects that
This is distinguished.For example, first piston can be referred to as second piston, and similarly second piston can also be referred to as the first work
Plug, this protection scope without departing from the application.
The embodiment of the invention provides a kind of hot flow path cylinder applied to integrated system, the hot flow path cylinder is for driving
Valve needle movements, as shown in figs 2-4, comprising:
Cylinder body 2, the inside of the cylinder body 2 are axially provided with first piston chamber 21 and second piston chamber 22, and described
One, the isolation board 23 for the first, second plunger shaft to be isolated is provided between second piston chamber；Here, in figs. 3 and 4,
Axial direction is vertical direction, and the first, second piston axially moves reciprocatingly；It is understood that in reality
Border use in, the installation direction of hot flow path cylinder be it is indefinite, therefore, axial direction can be with vertical direction, level side in practice
To etc., but the first, second piston can axially move reciprocatingly, i.e. and Fig. 3 and Fig. 4 are only an example.Here,
Isolation board 23 is isolated by the first, second plunger shaft, i.e., gas cannot flow between the first, second plunger shaft along the isolation board 23
It is dynamic.
The first piston that axially reciprocating can be done along first piston chamber 21 is provided in first piston chamber 21
212, the second piston 222 that axially reciprocating can be done along second piston chamber 22 is provided in second piston chamber 22；The
First piston chamber 21 is divided into the first cavity A and the second cavity B by one piston 212, and second piston 222 divides second piston chamber 22
It is segmented into third cavity C and the 4th cavity D, and the second cavity B and third cavity C are located at the two sides of isolation board 23, first
It is connected between cavity A and third cavity C by channel 214；211 He of the first venthole is provided in the cavity wall of first piston chamber 21
Third venthole 213, and when first piston 212 does axially reciprocating along first piston chamber 21, the first venthole 211 begins
The first cavity A of connection, third venthole 213 are connected to the second cavity B always eventually；In second piston 222 along second piston chamber 22
When doing axially reciprocating, the second venthole 221 is connected to the 4th cavity D always；
Here it is possible to understand, the inner surface of the periphery and first piston chamber 21 of first piston 212 matches, second
The periphery of piston 222 and the inner surface of second piston chamber 22 match.In actual use, first piston 212 can be living first
It axially moves reciprocatingly in plug chamber 21, so that the size of the cavity of the first side of first piston 212 always changes, Ke Yili
Solution, due to making precision, what which was constantly present, similarly, third, the 4th cavity are also always
It is existing.
Here as shown in Figure 3, Figure 4, the first cavity A and the second cavity B is located at the not ipsilateral of first piston 212, third
Cavity C and the 4th cavity D is located at the not ipsilateral of second piston 222, namely in the orientation shown in Fig. 3, Fig. 4, the first chamber
Body A is located at the upside of first piston 212, and the second cavity B is located at the downside of first piston 212, and it is living that third cavity C is located at second
The upside of plug 222, the 4th cavity D are located at second piston 222 similarly hereinafter.
Here, as shown in Figure 3 and Figure 4, one upward protrusion is set in the upper surface of first piston 212, the protrusion
Cross-sectional area is less than the cross-sectional area of first piston 212, it is to be understood that when first piston 212 moves to first piston chamber
When 21 top, gap will form between first piston 212 and top, which is the first cavity A, and such
Seemingly, a protrusion also can be set in the lower surface of first piston 212, even if to guarantee that first piston 212 moves to the
When the bottom of one plunger shaft 21, also there is gap between first piston 212 and bottom, which is the second cavity B.
Here, as shown in Figure 3 and Figure 4, one upward protrusion is set in the upper surface of second piston 222, the protrusion
Cross-sectional area is less than the cross-sectional area of second piston 222, it is to be understood that when second piston 222 moves to second piston chamber
When 22 top, gap will form between second piston 222 and top, which is third cavity C, and such
Seemingly, a protrusion also can be set in the lower surface of second piston 222, even if to guarantee that second piston 222 moves to the
When the bottom of two plunger shafts 22, also there is gap between second piston 222 and bottom, which is the 4th cavity D.
In conclusion at any time, gas can along the channel 214 the first cavity A and third cavity C it
Between flow.In practice, channel 214 can be set with various ways, for example, as Fig. 3 can be in first piston shown in Fig. 4
It is arranged on 212；Channel 214 can also be set on the casing wall of cylinder body 2, and the both ends point in the channel 214 are connected to the two cavitys.
First piston 212 is fixedly connected with second piston 222 and keeps synchronous reciprocating movement in the axial direction, and can drive
Dynamic needle moves reciprocatingly in the axial direction.Here it is possible to there are ways to realize first piston 212 and second piston 222 it
Between be fixedly connected, for example, as shown in Figure 3, Figure 4, first piston 212 has an end outstanding, which passes through isolation
Then through hole on plate 23 is fixedly connected with second piston 222, it is to be understood that the periphery of the end and the through hole
Inner surface match, so that air-flow be prevented to flow between the first, second plunger shaft along the through hole.
It is understood that first piston chamber 21 is in addition between the first venthole 211 and third venthole 213, with the heat
Runner cylinder exterior space is disconnected；Second piston chamber 22 is other than the second venthole 213, with sky outside the heat flow cylinder
Between be disconnected.
In practice, the effect of hot flow path cylinder is usually all the reciprocal fortune that needle is driven using the reciprocating motion of piston
Dynamic, so as to be opened and closed hot nozzle, i.e., the hot flow path cylinder also needs to be provided with connection piston (first piston 212 or second piston
222) with the device of needle.
Preferably, it is provided with the first through hole 231 on the isolation board 23, the first piston 212 includes the to be connected
One end 2121 and the second end 2122, first end 2121 are set in first piston chamber 21, and the second end 2122 is set to
In first through hole 231, the cross-sectional area of first end 2121 is greater than the cross-sectional area of the second end 2122, the second end
The other end of separate first end 2121 in 2122 is fixedly attached to second piston 222；
When first piston 212 moves reciprocatingly in the axial direction, the periphery of first end 2121 and the first piston chamber
21 inner surfaces match, and periphery and 231 inner surface of the first through hole of the second end 2122 match.
Preferably, the first end 2121 is overlapped with the central axes of the second end 2122.
Preferably, first end 2121 and the second end 2122 are run through in the channel 214 in the axial direction.Here, such as Fig. 4 institute
Show, the upper surface of first piston 212 is provided with protrusion, and the one end in the channel 214 can be set in the upper surface of the protrusion, can
With understanding, it can according to need and the upper surface of protrusion is provided with some grooves, in use, which is possible to and the
It is tightly connected at the top of one plunger shaft 21, then the groove can be connected to the first cavity A；Similar, the other end in the channel 214 can be with
It is set to the bottom of the second end 2122, as shown in Figure 3 and Figure 4, can be set between the second end 2122 and second piston 222
It is equipped with some pipelines or the gap etc. of connection third cavity C and channel 214.I.e. no matter when, the channel 214 is all by the first cavity
A is connected to third cavity C.
Preferably, between the periphery of first end 2121 and 21 inner surface of first piston chamber and/or the second end
Elastic component 1 is formed between 231 inner surface of 2122 periphery and the first through hole.It is understood that the elastic component 1 can add
Leakproofness between 21 inner surface of periphery and first piston chamber of strong first end 2121, can also be improved the second end 2122
Leakproofness between 231 inner surface of periphery and the first through hole.As shown in Figure 3 and Figure 4, the periphery of first end 2121 can be with
It is provided with the groove of annular, elastic component 1 is provided in the groove, annular can be set in 231 inner surface of the first through hole
Groove is provided with elastic component 1 in the groove.
Preferably, the is provided on the pedestal 223 relative to the isolation board 23 setting in the second piston chamber 22
Two through holes 2232；Here, as shown in Fig. 3-Fig. 7, isolation board 23 constitutes the top of second piston chamber 22, and pedestal 223 is constituted
The bottom of second piston chamber 22.
The second piston 222 includes connected third end 2223 and the 4th end 2224, and third end 2223 is arranged
In second piston chamber 22, the 4th end 2224 is set in the second through hole 2232, and the cross-sectional area of third end 2223 is big
Cross-sectional area in the 4th end 2224；
When second piston 222 moves reciprocatingly in the axial direction, the periphery of third end 2223 and the second piston chamber
22 inner surfaces match, and periphery and 2332 inner surface of the second through hole of the 4th end 2224 match.
Optionally, between the periphery of third end 2223 and 22 inner surface of second piston chamber and/or the 4th end
Elastic component 1 is formed between 2232 inner surface of 2224 periphery and the second through hole.It is understood that the elastic component 1 can be with
Reinforce the leakproofness between 22 inner surface of periphery and second piston chamber of third end 2223, can also be improved the 4th end 2224
2232 inner surface of periphery and the second through hole between leakproofness.As shown in Figure 3 and Figure 4, in the periphery of third end 2223
The groove that annular can be set, is provided with elastic component 1, ring has can be set in 2332 inner surface of the second through hole in the groove
The groove of shape is provided with elastic component 1 in the groove.
Preferably, the 4th end 2224 is formed with far from one end of third end 2223 for connecting the needle
Needle hanging platform 2221.
Preferably, the third end 2223 is overlapped with the central axes of the 4th end 2224.
Preferably, the first end 2121, the second end 2122, third end 2223 and the 4th end 2224 axis
Line is overlapped.
Here, in actual manufacturing process, which can be divided into several components to manufacture, then carries out group
It closes, for example, as shown in Fig. 3-Fig. 7, including, it is provided with the first component of first piston chamber 21, is provided with second piston chamber 22
Second component and pedestal 223 are both provided with plunger shaft, and bottom opening in both parts；The hot flow path cylinder from top to bottom according to
Secondary is the first component, second component and pedestal 223, then the top of second component is just used as isolation board 23, and the sealing of pedestal 223 the
The bottom opening of two components, it is to be understood that sealing device can be set in the junction of these three components, in order to mention
High tightness can be used the second fastener 24 and sequentially pass through the first component and second component under upper, and second
Water plate 3 is also provided with below component, and the second fastener 24 is passing through second component and then is being connected on water plate 3,
Here, the screw hole matched with the bolt can be set with a bolt in the second fastener 24 on water plate 3.
Here, as shown in Fig. 3-Fig. 7, the first fastener 2123 can be used to be fixedly connected with first piston 212 and second
Piston 222, as shown in Figure 6 and Figure 7, the central axes phase of the central axes of first fastener 2123 and the first, second piston 222
Together.It can be the bottom of first part and second in production for the ease of the positioning between first part and second part
The top divided is provided with symmetrical location hole 251, in production, can be inserted into positioning column in the location hole 251 of second part,
Then the location hole 251 in first part is directed at positioning column.
The embodiment of the invention also provides a kind of hot runner system, described including above-mentioned hot flow path cylinder and hot nozzle component
Hot nozzle component includes the needle and hot nozzle ontology, and the hot flow path cylinder drives the relatively described hot nozzle ontology of needle to do axial direction
It moves back and forth.
It is supposed that the area of the first end 2121 in first piston 212 is S1, the area of the second end 2122 is
S2, the cross-sectional area of the third end 2223 in second piston 222 is equal to S4, the cross-sectional area of the 4th end 2224 is equal to S5,
Wherein, S1 > S2 > S5, S4 > S2 > S5,.
The working principle of the hot flow path cylinder are as follows:
(1) when needing the first, second piston to do the movement under, as shown in figure 3, can then pass through the first venthole
211 convey the gas that pressure is P1 to the first cavity A, and the gas in cavity A can be flowed into third cavity C along channel 214
In, then the pressure of third cavity C is also P1, and the pressure in the second cavity B and the 4th cavity D is atmospheric pressure Pa.
As shown in Fig. 2, gas can generate pressure directed downwardly to first piston 212, and pressure is P1* in the first cavity A
S1；In second chamber B, gas can generate pressure upward to first piston 212, and pressure is Pa* (S1-S2)；In third
In cavity C, gas can generate pressure directed downwardly to second piston 222, and pressure is P1* (S4-S2)；In the 4th chamber D, gas
Pressure upward can be generated to second piston 222, and pressure is Pa* (S4-S5)；.Then the pushing away under of the first, second piston
Power is F1 '=P1*S1+P1* (S4-S2)-Pa* (S1-S2)-Pa* (S4-S5)-total frictional force=P1* (S1+S4-S2)-Pa*
(S1-S2+S4-S5)-total frictional force.
(2) when needing the first, second piston to do towards when upper movement, as shown in figure 4, can then pass through the second venthole
221 convey pressure to the 4th cavity D as P1 gas.The then gas pressure intensity etc. in the first cavity A, the second cavity B and third cavity C
In atmospheric pressure Pa.
As shown in figure 3, gas can generate pressure directed downwardly to first piston 212, and pressure is Pa* in the first cavity A
S1；In second chamber B, gas can generate pressure upward to first piston 212, and pressure is Pa* (S1-S2)；In third chamber
In body C, gas can generate pressure directed downwardly to second piston 222, and pressure is Pa* (S4-S2)；In the 4th chamber D, gas meeting
Pressure upward is generated to second piston 222, and pressure is P1* (S4-S5)；Then the thrust of the first, second piston upward is F2 '
=P1* (S4-S5)-Pa* (S4-S2)-Pa*S1+Pa* (S1-S2)-total frictional force=P1* (S4-S5)-PaS4- total frictional force.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book
With the other embodiments of understanding.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention
Or change should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of hot flow path cylinder applied to integrated system, the hot flow path cylinder is moved for valve needle, which is characterized in that
Include:
Cylinder body, the inside of the cylinder body are axially provided with first piston chamber and second piston chamber, first, second piston
The isolation board for the first, second plunger shaft to be isolated is provided between chamber；
The first piston that axially reciprocating can be done along first piston chamber is provided in first piston chamber, in second piston
The second piston that axially reciprocating can be done along second piston chamber is provided in chamber；
First piston chamber is divided into the first cavity and the second cavity by first piston, and second piston chamber is divided by second piston
Three cavitys and the 4th cavity, and the second cavity and third cavity are located at the two sides of isolation board, the first cavity and third chamber
It is connected between body by channel；
The first venthole and third venthole are provided in the cavity wall of first piston chamber, and in first piston along first piston chamber
When doing axially reciprocating, the first venthole is connected to the first cavity always, third venthole is connected to the second cavity always；Second
When piston does axially reciprocating along second piston chamber, the second venthole is connected to the 4th cavity always；
First piston be fixedly connected with second piston and in the axial direction keep synchronous reciprocating movement, and can valve needle in axis
It moves reciprocatingly upwards.
2. hot flow path cylinder according to claim 1, it is characterised in that:
It is provided with the first through hole on the isolation board, the first piston includes connected first end and the second end, and
One end is set in first piston chamber, and the second end is set in the first through hole, and the cross-sectional area of first end is greater than institute
The cross-sectional area of the second end is stated, the other end of the separate first end in the second end is fixedly attached to second piston；
When first piston moves reciprocatingly in the axial direction, the periphery of first end and the first piston inner cavity surface phase
Match, the periphery of the second end matches with first through internal surface of hole.
3. hot flow path cylinder according to claim 2, it is characterised in that:
The first end is overlapped with the central axes of the second end.
4. hot flow path cylinder according to claim 2, it is characterised in that:
First end and the second end are run through in the channel in the axial direction.
5. hot flow path cylinder according to claim 2, it is characterised in that:
Between the periphery of first end and the first piston inner cavity surface and/or in the periphery and the first through hole of the second end
Elastic component is formed between surface.
6. hot flow path cylinder according to claim 1, it is characterised in that:
The second through hole is provided on the pedestal relative to isolation board setting in the second piston chamber；
The second piston includes connected third end and the 4th end, and third end is set in second piston chamber, and the 4th
End is set in the second through hole, and the cross-sectional area of third end is greater than the cross-sectional area of the 4th end；
When second piston moves reciprocatingly in the axial direction, the periphery of third end and the second piston inner cavity surface phase
Match, the periphery of the 4th end matches with second through internal surface of hole.
7. hot flow path cylinder according to claim 6, it is characterised in that:
4th end is formed with the needle hanging platform for connecting the needle far from one end of third end.
8. hot flow path cylinder according to claim 6, it is characterised in that:
The third end is overlapped with the central axes of the 4th end.
9. hot flow path cylinder according to claim 6, it is characterised in that:
The first end, the second end, third end are overlapped with the central axes of the 4th end.
10. a kind of hot runner system, which is characterized in that including the described in any item hot flow path cylinders of claim 1-9 and hot nozzle group
Part, the hot nozzle component include the needle and hot nozzle ontology, and the hot flow path cylinder drives the relatively described hot nozzle sheet of needle
Body does axially reciprocating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811556242.3A CN109435171A (en) | 2018-12-19 | 2018-12-19 | Applied to the hot flow path cylinder of integrated system and with its hot runner system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811556242.3A CN109435171A (en) | 2018-12-19 | 2018-12-19 | Applied to the hot flow path cylinder of integrated system and with its hot runner system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109435171A true CN109435171A (en) | 2019-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811556242.3A Withdrawn CN109435171A (en) | 2018-12-19 | 2018-12-19 | Applied to the hot flow path cylinder of integrated system and with its hot runner system |
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| Country | Link |
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| CN (1) | CN109435171A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203267116U (en) * | 2013-03-29 | 2013-11-06 | 东莞市贝斯特热流道科技有限公司 | Needle valve nozzle dual-cylinder of hot runner mold |
| CN107244042A (en) * | 2017-08-08 | 2017-10-13 | 东莞市热恒注塑科技有限公司 | An a kind of mouth bull special double-layer cylinder |
| CN208067333U (en) * | 2018-02-09 | 2018-11-09 | 深圳市速锋科技股份有限公司 | Air cylinder structure, electro spindle and lathe |
| CN209409191U (en) * | 2018-12-19 | 2019-09-20 | 柳道万和(苏州)热流道系统有限公司 | Applied to the hot flow path cylinder of integrated system and with its hot runner system |
-
2018
- 2018-12-19 CN CN201811556242.3A patent/CN109435171A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203267116U (en) * | 2013-03-29 | 2013-11-06 | 东莞市贝斯特热流道科技有限公司 | Needle valve nozzle dual-cylinder of hot runner mold |
| CN107244042A (en) * | 2017-08-08 | 2017-10-13 | 东莞市热恒注塑科技有限公司 | An a kind of mouth bull special double-layer cylinder |
| CN208067333U (en) * | 2018-02-09 | 2018-11-09 | 深圳市速锋科技股份有限公司 | Air cylinder structure, electro spindle and lathe |
| CN209409191U (en) * | 2018-12-19 | 2019-09-20 | 柳道万和(苏州)热流道系统有限公司 | Applied to the hot flow path cylinder of integrated system and with its hot runner system |
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Application publication date: 20190308 |