CN106523464A - Three-layer piston cylinder - Google Patents
Three-layer piston cylinder Download PDFInfo
- Publication number
- CN106523464A CN106523464A CN201611270038.6A CN201611270038A CN106523464A CN 106523464 A CN106523464 A CN 106523464A CN 201611270038 A CN201611270038 A CN 201611270038A CN 106523464 A CN106523464 A CN 106523464A
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- cylinder body
- piston
- gas port
- cylinder
- layers
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- 239000000498 cooling water Substances 0.000 claims description 13
- 239000011148 porous material Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 7
- 230000006978 adaptation Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 8
- 238000001746 injection moulding Methods 0.000 abstract description 3
- 238000005192 partition Methods 0.000 abstract 6
- 239000010410 layer Substances 0.000 description 38
- 238000007789 sealing Methods 0.000 description 13
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000004513 sizing Methods 0.000 description 4
- 230000004927 fusion Effects 0.000 description 3
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1485—Special measures for cooling or heating
-
- 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
- B29C2045/2827—Needle valves driven by an annular piston mounted around the nozzle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Actuator (AREA)
Abstract
The invention relates to the technical field of cylinders, in particular to a three-layer piston cylinder. The three-layer piston cylinder comprises a lower cylinder body, a lower partition plate, a middle cylinder body, an upper partition plate, an upper cylinder body and a piston rod, wherein the lower cylinder body, the lower partition plate, the middle cylinder body, the upper partition plate and the upper cylinder body are arranged in a stacked mode, and the piston rod penetrates through the lower cylinder body, the lower partition plate, the middle cylinder body, the upper partition plate and the upper cylinder body and is used for driving a valve needle to stretch and retract. A lower piston, a middle piston and an upper piston which are arranged in a spaced mode are connected to the piston rod. The lower piston, the middle piston and the upper piston are located in the upper cylinder body, the middle cylinder body and the lower cylinder body correspondingly and divide the upper cylinder body, the middle cylinder body and the lower cylinder body into upper cavities and lower cavities correspondingly. According to the three-layer piston cylinder, larger driving force can be output under the condition that the pressure of an air source is not increased, and the structure is simple; and the three-layer piston cylinder can control the needle valve to stretch and retract stably and reliably when applied to a needle valve type hot runner system, can adapt to large-sprue injection molding, and accordingly lowers the process adjustment difficulty during injection molding.
Description
Technical field
The present invention relates to cylinder technical field, more particularly to three layers of piston-cylinder.
Background technology
In the production of plasthetics, in order to control product appearance quality, it is necessary to control the position of sizing material fusion, in order to reach
To this purpose, frequently with needle valve type hot runner system, pintle action is driven using oil cylinder or cylinder, control beating for hot mouth Jiao Kou
It is open and close, time and the order of glue mouth plastic emitting is controlled, to control the position of sizing material end flowing, control difference is reached and is flowed to glue
The position of material fusion, it is to avoid or reduce impact of the stream fusion to product quality.
But in actual use, the working life of oil cylinder is easily acted upon by temperature changes, leakage is susceptible to, just can be affected
Often the carrying out of production, causes immeasurable economic loss to enterprise.In order to prevent oil cylinder from leaking, need to improve the reliability of oil cylinder
Property, machining accuracy is such as improved, using relatively costly refractory seals part, cost increase is thus resulted in.And cylinder is compressing sky
, as working media, air temperature influence is less for gas, in addition, with respect to oil cylinder, the response speed of cylinder is very fast.But, due to
The pressure ratio of compressed air is relatively low, causes cylinder power output than relatively low, in the case of equivalently-sized, output of the cylinder than oil cylinder
Much smaller times of power, so, in actual application, it is bad that the monolayer piston-cylinder of traditional structure easily causes glue mouth,
Production needs can not many times be met.
The content of the invention
It is an object of the invention to provide a kind of three layers of piston-cylinder, it is intended to solve prior art and be applied to needle valve hot-fluid
The low technical problem of the cylinder power output of road system.
For achieving the above object, the technical scheme is that：A kind of three layers of piston-cylinder, including the lower cylinder being stacked
Body, lower clapboard, middle cylinder body, upper spacer and upper cylinder body and wear the lower cylinder body, lower clapboard, middle cylinder body, upper spacer and upper cylinder half
Body and for valve needle stretching motion piston rod, be connected with the piston rod spaced lower piston, middle piston and
Upper piston, the lower piston, middle piston and upper piston are located in the upper cylinder body, middle cylinder body and lower cylinder body and respectively by institute respectively
State upper cylinder body, middle cylinder body and lower cylinder body and be divided into lower chambers and upper chamber；
The lower cylinder body offers first time air inlet and second time air inlet, the middle cylinder body offer first in air inlet
Air inlet in hole and second, the upper cylinder body offer enterprising pore；
The lower clapboard offers first time gas port and second time gas port, and the upper spacer offers inducing QI on first
Gas port on hole and second；
The lower chambers of first time air inlet and first lower cylinder body and first time gas port are connected, and described
Once gas port is connected with air inlet in the lower chambers and described first of the middle cylinder body, air inlet and described in described first
Gas port connection on one, on described first, gas port is connected with the lower chambers of the upper cylinder body；
Second time air inlet is connected with second time gas port, second time gas port and the lower cylinder body
Upper chamber is connected with air inlet in described second, and in described second, air inlet is connected with gas port on described second, and described second
The upper chamber of upper gas port and the middle cylinder body and the enterprising pore are connected, the epicoele of the enterprising pore and the upper cylinder body
Room connects.
Preferably, the lower surface and upper surface of the lower clapboard is respectively equipped with and second time gas port and described first
Special-shaped air slot on first time special-shaped air slot and first of lower gas port connection；First time special-shaped air slot with it is described under
Upper chamber's connection of cylinder body, on described first, special-shaped air slot is connected with the lower chambers of the middle cylinder body.
Preferably, the lower surface and upper surface of the upper spacer be respectively equipped with described second on gas port and described first
Special-shaped air slot on second time special-shaped air slot and second of upper gas port connection；Second time special-shaped air slot with it is described in
Upper chamber's connection of cylinder body, on described second, special-shaped air slot is connected with the lower chambers of the upper cylinder body.
Preferably, the middle piston is fixedly connected with the piston rod, the lower piston and the upper piston with it is described
Piston rod is detachably connected.
Preferably, it is located on the piston rod on the downside of the middle piston and is provided with spaced apart getting out of a predicament or an embarrassing situation and lower annular
Groove, is located on the upside of the middle piston the upper cannelure of the top bar for being provided with distance member on the piston rod；
The lower piston is socketed on the piston rod and gets out of a predicament or an embarrassing situation described in abutting and be fastened in by a lower circlip described
To compress the lower piston, the upper piston is socketed on the piston rod and abuts the top bar and passes through one lower cannelure
Upper jump ring is fastened in the upper cannelure to compress the upper piston.
Preferably, lower exterior seal ring and lower interior is respectively equipped between the lower piston and the lower cylinder body and the piston rod
Sealing ring；Middle exterior seal ring is provided between the middle piston and the middle cylinder body；The upper piston and the upper cylinder body and described
Exterior seal ring and upper inner seal ring is respectively equipped between piston rod.
Preferably, the piston rod offers hollow hole in the middle part of its axial direction, is provided with interior spiral shell in the hollow hole
Stricture of vagina, on the female thread, adaptation is connected to the limited screw that can be adjusted up and down, and the limited screw is provided with for hanging the valve
The U-lag of the T-shaped head of pin.
Preferably, on the female thread, also adaptation is connected to the fastening screw for locking the limited screw.
Preferably, three layers of piston-cylinder also includes alignment pin and fixing screws, the lower cylinder body being stacked, under
Location hole and fixing hole that dividing plate, middle cylinder body, upper spacer are equipped with position correspondence with upper cylinder body and connect, the alignment pin wear
The location hole to realize positioning to the lower cylinder body, lower clapboard, middle cylinder body, upper spacer and upper cylinder body, wear by the fixing screws
If the fixing hole is with to the realization locking of the lower cylinder body, lower clapboard, middle cylinder body, upper spacer and upper cylinder body.
Preferably, three layers of piston-cylinder also includes being stacked the cooling water block below the lower cylinder body, described
The sidepiece of cooling water block is provided with water inlet and outlet, and the inside of the cooling water block is additionally provided with the connection water inlet and described
The cooling duct of outlet.
Beneficial effects of the present invention：Three layers of piston-cylinder of the present invention, in the case of overall structure constancy of volume, can
The power output of intensifying cylinder is realized, i.e., in the case of same gas pressure, the power output of three layers of piston-cylinder is Double decker piston
1.49 times of cylinder power output, are 3.85 times of monolayer cylinder piston power output, do not increase pneumatic supply pressure, you can realize output
Bigger driving force, and structure reliability, the stretching motion for being applied to control needle during needle valve type hot runner system are reliable and stable, energy
Big cast gate injection is enough adapted to, and then reduces the difficulty of technique adjustment during injection.
Description of the drawings
Fig. 1 is the structural representation of three layers of piston-cylinder provided in an embodiment of the present invention.
Fig. 2 is the Section View of the line A-A along Fig. 1.
Fig. 3 is the Section View of the line B-B along Fig. 1.
Fig. 4 is that cutting when three pistons of three layers of piston-cylinder provided in an embodiment of the present invention are in upper position is regarded
Figure.
Fig. 5 is that cutting when three pistons of three layers of piston-cylinder provided in an embodiment of the present invention are in medium position is regarded
Figure.
Fig. 6 is that cutting when three pistons of three layers of piston-cylinder provided in an embodiment of the present invention are in lower position is regarded
Figure.
Fig. 7 be three layers of piston-cylinder provided in an embodiment of the present invention middle piston be in the first kinestate when cutting
View.
Fig. 8 be three layers of piston-cylinder provided in an embodiment of the present invention middle piston be in second kinestate when cutting
View.
Fig. 9 be three layers of piston-cylinder provided in an embodiment of the present invention middle piston be in the third kinestate when cutting
View.
Figure 10 is the Section View that three pistons of three layers of piston-cylinder provided in an embodiment of the present invention are connected with piston rod.
Figure 11 is the structural decomposition diagram of three layers of piston-cylinder provided in an embodiment of the present invention.
Figure 12 is the structural representation that three layers of piston-cylinder control needle provided in an embodiment of the present invention closes cast gate state.
Figure 13 is the structural representation that three layers of piston-cylinder control needle provided in an embodiment of the present invention opens cast gate state.
Figure 14 is the gas path structural representation of three layers of piston-cylinder provided in an embodiment of the present invention.
Reference includes：
10 lower cylinder body, 11 first time 12 second time air inlet of air inlet
20 lower clapboard, 21 first time 22 second time gas port of gas port
Cylinder body in special-shaped air slot 30 on 23 first time special-shaped air slot 24 first
40 upper spacer of air inlet in air inlet 32 second in 31 first
43 second time special-shaped air slot of gas port on gas port 42 second on 41 first
50 upper cylinder body of special-shaped air slot, 51 enterprising pore on 44 second
60 piston rod, 61 hollow hole 62 is got out of a predicament or an embarrassing situation
63 times 64 lower circlip of cannelure, 65 top bars
70 lower piston of jump ring on cannelure 67 on 66
Piston in 71 times exterior seal rings, 72 times inner seal rings 80
Exterior seal ring on 90 upper piston 91 of exterior seal ring in 81
100 limited screw of inner seal ring, 110 fastening screw on 92
120 cooling water block, 121 water inlet, 122 outlet
123 cooling duct, 130 needle, 131 T-shaped head
140 alignment pin, 141 location hole, 150 fixing screws
151 fixing holes.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In describing the invention, it is to be understood that term " length ", " width ", " on ", D score, "front", "rear",
The orientation of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " or position relationship are based on accompanying drawing institute
The orientation for showing or position relationship, are for only for ease of the description present invention and simplify description, rather than indicate or imply the dress of indication
Put or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the present invention limit
System.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In describing the invention, " multiple " are meant that two or more,
Unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or it is integral；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to concrete feelings
Condition understands above-mentioned term concrete meaning in the present invention.
As shown in figure 1 to figure 13, a kind of three layers of piston-cylinder provided in an embodiment of the present invention, including the lower cylinder being stacked
Body 10, lower clapboard 20, middle cylinder body 30, upper spacer 40 and upper cylinder body 50 and wear the lower cylinder body 10, lower clapboard 20, middle cylinder body
30th, upper spacer 40 and upper cylinder body 50 piston rod 60 for 130 stretching motion of valve needle, are connected with the piston rod 60
Spaced lower piston 70, middle piston 80 and upper piston 90, the lower piston 70, middle piston 80 and upper piston 90 are located at respectively
The upper cylinder body 50, middle cylinder body 30 and lower cylinder body 10 are interior and by 10 points of the upper cylinder body 50, middle cylinder body 30 and lower cylinder body are respectively
Lower chambers and upper chamber.
Fig. 2～3 are referred to further, the lower cylinder body 10 offers first time air inlet 11 and second time air inlet 12,
The middle cylinder body 30 offer first in air inlet 32 in air inlet 31 and second, the upper cylinder body 50 offers enterprising pore
51；
Fig. 2～3 are referred to further, the lower clapboard 20 offers first time gas port 21 and second time gas port 22,
The upper spacer 40 offers on first gas port 42 on gas port 41 and second.
Fig. 2～3 are referred to further, first time air inlet 11 and the lower chambers of first lower cylinder body 10 and described
First time gas port 21 is connected, first time gas port 21 and air inlet in the lower chambers and described first of the middle cylinder body 30
31 connection, in described first, air inlet 31 is connected with gas port 41 on described first, on described first gas port 41 with it is described on
The lower chambers connection of cylinder body 50.
Fig. 2～3 are referred to further, second time air inlet 12 connected with second time gas port 22, described the
Two times gas ports 22 are connected with air inlet 32 in the upper chamber and described second of the lower cylinder body 10, air inlet 32 in described second
Connect with gas port 42 on described second, upper chamber and the upper air of gas port 42 and the middle cylinder body 30 on described second
Hole 51 connects, and the enterprising pore 51 is connected with the upper chamber of the upper cylinder body 50.
Three layers of piston-cylinder of the embodiment of the present invention, in the case of overall structure constancy of volume, can realize increasing gas
The power output of cylinder, i.e., in the case of same gas pressure, the power output of three layers of piston-cylinder is Double decker piston cylinder power output
1.49 times, be 3.85 times of monolayer cylinder piston power output, do not increase pneumatic supply pressure, you can realize the bigger driving of output
Power, and structure reliability, the stretching motion for being applied to control needle 130 during needle valve type hot runner system are reliable and stable, can adapt to
Big cast gate injection, and then reduce the difficulty of technique adjustment during injection.
Specifically, refering to Fig. 2～3 and Fig. 7～9, the operation principle of three layers of piston-cylinder of the embodiment of the present invention is：
Control needle 130 rising the course of work be：
First time 11 air inlet of air inlet, gas enter into the bottom chamber of the first lower cylinder body 10, then drive lower piston 70
Rise；Meanwhile, gas enters into the bottom chamber of middle cylinder body 30 through first time gas port 21, in then driving on piston 80
Rise；Meanwhile, gas air inlet 31 in first, then gas port 41 enters into the bottom chamber of upper cylinder body 50 on first,
Then upper piston 90 is driven to rise；So as to realize driving piston rod 60 to rise, and then realize the valve that control is connected with piston rod 60
The rising of pin 130.
Control needle 130 decline the course of work be：
Second time 12 air inlet of air inlet, gas in the epicoele room that second time gas port 22 enters into lower cylinder body 10, so
Lower piston 70 is driven to decline afterwards；Meanwhile, gas air inlet 32 in second, then gas port 42 enters into middle cylinder on second
In the epicoele room of body 30, in then driving, piston 80 declines；Meanwhile, gas enters into the upper of upper cylinder body 50 through enterprising pore 51
Within the chamber, then drives upper piston 90 to decline；So as to realize driving piston rod 60 to decline, and then realize that control is connected with piston rod 60
The decline of the needle 130 for connecing.
Thus, realizing that control needle 130 realizes upper and lower stretching motion.So, three layers of piston-cylinder of the present embodiment should
Operation principle used in needle valve type hot runner system is：
When production is molded, it is hot gluse size inside flow distribution plate and the runner of hot mouth, directly can be molded into by Jiao Kou
In die cavity.During injecting products：During production injecting products, needle 130 will be the state of opening (such as Figure 12), and sizing material could pass through Jiao Kou
It is molded in die cavity and is molded into product, but the acquiescence of needle 130 is closed mode.
Injection moulding process：Injection machine provides injection signal → signal and is conveyed to solenoid directional control valve → electromagnetism by time controller
Direction valve allows compressed air into lower chambers → each piston upwards → cast gate of each cylinder body and opens → start injection.This process
Process is opened for needle 130.
Product takes out：After the completion of injection, after product is adequately cooled, during ejecting product, cast gate is closed mode (as schemed
13), the sizing material of the melting state in needle valve type hot runner system will not be flowed out by Jiao Kou when product is ejected, and product is taken
Part.
Taking-up process：Injection machine injection signal ended → time controller delivers a signal to electromagnetic direction valve commutation → compression
Air moved downward into each piston of upper chamber → compressed air-driven of each cylinder body → and each piston driving is connected with piston rod 60
Needle 130 close Jiao Kou → mould cooling → die sinking → ejection → take out product.This process is that needle 130 closes (i.e. valve
130 sealing of pin) process.
Refering to Fig. 2～3 and Fig. 7～9, in the present embodiment, the lower surface and upper surface of the lower clapboard 20 be respectively equipped with
On first time special-shaped air slot 23 and first that second time gas port 22 is connected with first time gas port 21, abnormity is led
Air drain 24；Described first time special-shaped air slot 23 is connected with the upper chamber of the lower cylinder body 10, special-shaped air slot on described first
24 are connected with the lower chambers of the middle cylinder body 30.Specifically, gas continues through different on first when first time gas port 21
Shape air slot 24 can be realized entering into the bottom chamber of middle cylinder body 30, and in so realizing driving, piston 80 rises；In the same manner, gas
First time special-shaped air slot 23 is continued through when second time air inlet 12 to realize entering in the epicoele room of lower cylinder body 10,
So realize driving lower piston 70 to decline.
Refering to Fig. 2～3 and Fig. 7～9, in the present embodiment, the lower surface and upper surface of the upper spacer 40 be respectively equipped with
On second time special-shaped air slot 43 and second that gas port 42 is connected with gas port 41 on described first on described second, abnormity is led
Air drain 44；Described second time special-shaped air slot 43 is connected with the upper chamber of the middle cylinder body 30, special-shaped air slot on described second
44 are connected with the lower chambers of the upper cylinder body 50.Specifically, gas continues through on first different on second during gas port 41
Shape air slot 44 can be realized entering into the bottom chamber of upper cylinder body 50, so realize driving upper piston 90 to rise；In the same manner, gas
In second during air inlet 32 in the epicoele room that second time abnormity air slot 43 enters into middle cylinder body 30 with realization, so
In realizing driving, piston 80 declines.
So, by lower clapboard 20 and the ingenious structure design of upper spacer 40, realize that the setting to gas is oriented to.
Refering to Fig. 4～6, further, lower clapboard 20 and upper spacer 40 constitute three complete seal spaces three cylinder bodies,
This design is that the upper and lower surfaces of the key point that can realize three layers of piston-cylinder structure, lower clapboard 20 and upper spacer 40 have close
Sealing groove mouth (not shown) is designed, and is flown to and is connect adjacent cylinder body by arranging sealing ring in sealing notch, so as to realize that stacking sets
The lower cylinder body 10 put, between lower clapboard 20, middle cylinder body 30, upper spacer 40 and upper cylinder body 50, sealing is good.
Refering to Figure 10, in the present embodiment, the middle piston 80 is fixedly connected with the piston rod 60, it is preferable that in described
Piston 80 is integrally formed with the piston rod 60.The lower piston 70 and the upper piston 90 are detachable with the piston rod 60
Connection.Specifically, dismountable connection design can facilitate implementation lower piston 70 and upper piston 90 is respectively assembled to lower cylinder body 10
In upper cylinder body 50, meanwhile, also allow for carrying out lower piston 70 and upper piston 90 replacing and maintenance in later stage.
Refering to Fig. 4～9, in the present embodiment, the downside on the piston rod 60 positioned at the middle piston 80 is provided with interval cloth
Get out of a predicament or an embarrassing situation 62 and the lower cannelure 63 put, the upside on the piston rod 60 positioned at the middle piston 80 are provided with the upper of distance member
The upper cannelure 66 of step 65；The lower piston 70 is socketed on the piston rod 60 and gets out of a predicament or an embarrassing situation 62 and by one described in abutting
Lower circlip 64 is fastened in the lower cannelure 63 to compress the lower piston 70, and the upper piston 90 is socketed on the piston rod 60
Go up and abut the top bar 65 and pass through jump ring 67 on and be fastened in the upper cannelure 66 to compress the upper piston 90.
Specifically, lower circlip 64 and 67 structure of upper jump ring are substantially in C fonts, respectively will by lower circlip 64 and upper jump ring 67
Lower piston 70 and upper piston 90 are installed on position of the piston rod 60 near its two ends, form what three layers of piston were superimposed with middle piston 80
Structure, after completing assembling, three pistons are respectively placed in the confined space of three cylinder bodies, and be under pressure up and down motion respectively, from
And drive the up and down motion of needle 130.Wherein, lower circlip 64 and upper jump ring 67 will be lower piston 70 and 90 piston rod 60 of upper piston solid
It is scheduled on together, makes three layers of piston keep synchronous in motor process, realize the cumulative of driving force.
As shown in Figure 10, in the present embodiment, divide between the lower piston 70 and the lower cylinder body 10 and the piston rod 60
Lower exterior seal ring 71 and lower inner seal ring 72 are not provided with；Middle exterior seal ring is provided between the middle piston 80 and the middle cylinder body 30
81；Exterior seal ring 91 and upper interior sealing is respectively equipped between the upper piston 90 and the upper cylinder body 50 and the piston rod 60
Circle 92.Specifically, the setting of lower exterior seal ring 71 and lower inner seal ring 72 may insure lower piston 70 with lower cylinder body 10 and piston
Sealing between bar 60, the setting of middle exterior seal ring 81 may insure the sealing between middle piston 80 and middle cylinder body 30, on
The setting of exterior seal ring 91 and upper inner seal ring 92 may insure the sealing between upper piston 90 and upper cylinder body 50 and piston rod 60
Property.
Refering to Fig. 4～6 and Figure 10, in the present embodiment, the piston rod 60 offers hollow in the middle part of its axial direction
Female thread (not shown) is provided with hole 61, the hollow hole 61, adaptation is connected to can adjust up and down spacing on the female thread
Screw 100, the limited screw 100 are provided with the U-lag (not shown) for hanging the T-shaped head 131 of the needle 130.Tool
Body ground, hollow hole 61 are machined with female thread, can install limited screw 100, and needle 130 is tied by the U-lag of limited screw 100
Structure is fixed, and limited screw 100 can be adjusted up and down in threaded interior, so as to realize adjusting the purpose of needle 130.
Refering to Fig. 4～6 and Figure 10, in the present embodiment, on the female thread, also adaptation has been connected to for locking the limit
The fastening screw 110 of position screw 100.Specifically, fastening screw 110 preferably adopts base rice screw, and its effect is the spacing spiral shell of locking
Silk 100, limits gap with being superimposed for limited screw 100 to disappear using fastening screw 110, and can reach prevents limited screw 100 loose
The purpose moved back.
Refering to 11, in the present embodiment, three layers of piston-cylinder also includes alignment pin 140 and fixing screws 150, and stacking sets
What the lower cylinder body 10, lower clapboard 20, middle cylinder body 30, upper spacer 40 and the upper cylinder body 50 put was equipped with position correspondingly and connected determines
Position hole 141 and fixing hole 151, the alignment pin 140 wear the location hole 141 with to the lower cylinder body 10, lower clapboard 20, in
Cylinder body 30, upper spacer 40 and upper cylinder body 50 realize positioning, and the fixing screws 150 wear the fixing hole 151 with described
Cylinder body 10, lower clapboard 20, middle cylinder body 30, upper spacer 40 and upper cylinder body 50 realize locking.Specifically, alignment pin 140 and fixed spiral shell
The effect of nail 150 is to prevent lower clapboard 20, upper spacer 40 and dislocation occurs and lower cylinder body 10, middle cylinder body 30 and upper cylinder body 50 between
And fixation.
Refering to Fig. 2～3, in the present embodiment, three layers of piston-cylinder also includes being stacked under the lower cylinder body 10
The cooling water block 120 of side, the sidepiece of the cooling water block 120 are provided with water inlet 121 and outlet 122, the cooling water block 120
Inside be additionally provided with the cooling duct 123 of the connection water inlet 121 and the outlet 122.Specifically, cooling water block 120
Be disposed to maximum possible reduce conduction of the heat to three cylinder bodies, reduce high temperature to the sealing member in three cylinder bodies
Affect, improve the service life and stability in process of production of each part, enable three layers of piston-cylinder to be suitable for work
Make in high temperature environments.
Certainly, three layers of piston-cylinder are in structure design, it has been contemplated that high temperature resistant situation, but in actual applications still
Some basic principles are observed, such as, before needle valve type hot runner system starts, it is necessary to be first passed through to cooling water block 120 cold
But water.After hot flow path is closed, it is still desirable to cylinder is persistently cooled down more than 30 minutes, to protect in three layers of piston-cylinder
Sealing member, extends the service life of three layers of piston-cylinder.
In the present embodiment, each sealing ring adopts fluorubber material, it is ensured that stability in the case of a high temperature, it is ensured that three layers of work
The service life of piston cylinder.
Figure 14 can be finally referred to, gas enters fashionable path from first time air inlet respectively and second time air inlet enters
Fashionable path.
Understand that the present invention is the good characteristic with described below in sum：First, simple structure, easy accessibility can be square
Just the maintenance of cylinder；2nd, cooling water block 120 is provided with single cooling duct 123, transports water by cooling duct 123 and can drop
The bulk temperature of low cylinder, so that protect the service life of each parts of three layers of piston-cylinder；3rd, the regulation of needle 130 is simple,
Only need to adjust the length that fastening screw 110 just can very easily adjust needle 130；4th, three layers of piston structure increase output
Power, makes the application of three layers of piston-cylinder more extensive.So as to be able to make which in use, the efficiency not having in promoting conventional art
And there is practicality, become the product of a great practical value.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all think ofs in the present invention
Want with any modification, equivalent or the improvement made within principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of three layers of piston-cylinder, it is characterised in that：Including the lower cylinder body, lower clapboard, middle cylinder body, upper spacer being stacked and
Upper cylinder body and wear the lower cylinder body, lower clapboard, middle cylinder body, upper spacer and upper cylinder body and for valve needle stretching motion
Piston rod, is connected with spaced lower piston, middle piston and upper piston on the piston rod, the lower piston, middle piston and
Upper piston is located in the upper cylinder body, middle cylinder body and lower cylinder body respectively and respectively by the upper cylinder body, middle cylinder body and lower cylinder body point
For lower chambers and upper chamber；
The lower cylinder body offers first time air inlet and second time air inlet, the middle cylinder body offer first in air inlet and
Air inlet in second, the upper cylinder body offer enterprising pore；
The lower clapboard offers first time gas port and second time gas port, the upper spacer offer on first gas port and
Gas port on second；
The lower chambers of first time air inlet and first lower cylinder body and first time gas port are connected, under described first
Gas port is connected with air inlet in the lower chambers and described first of the middle cylinder body, in described first on air inlet and described first
Gas port is connected, and on described first, gas port is connected with the lower chambers of the upper cylinder body；
Second time air inlet is connected with second time gas port, the epicoele of second time gas port and the lower cylinder body
Room is connected with air inlet in described second, and in described second, air inlet is connected with gas port on described second, is led on described second
The upper chamber of pore and the middle cylinder body and the enterprising pore are connected, and the enterprising pore is connected with the upper chamber of the upper cylinder body
It is logical.
2. three layers of piston-cylinder according to claim 1, it is characterised in that：The lower surface and upper surface of the lower clapboard point
Abnormity on the special-shaped air slot and first of first time connected with second time gas port and first time gas port is not provided with
Air slot；Described first time special-shaped air slot is connected with the upper chamber of the lower cylinder body, special-shaped air slot and institute on described first
State the lower chambers connection of middle cylinder body.
3. three layers of piston-cylinder according to claim 1, it is characterised in that：The lower surface and upper surface of the upper spacer point
Abnormity on the special-shaped air slot and second of second time connected with gas port on gas port on described second and described first is not provided with
Air slot；Described second time special-shaped air slot is connected with the upper chamber of the middle cylinder body, special-shaped air slot and institute on described second
State the lower chambers connection of upper cylinder body.
4. three layers of piston-cylinder according to claim 1, it is characterised in that：The middle piston is fixed with the piston rod and is connected
Connect, the lower piston and the upper piston are detachably connected with the piston rod.
5. three layers of piston-cylinder according to claim 4, it is characterised in that：Positioned at the middle piston on the piston rod
Downside be provided with it is spaced apart get out of a predicament or an embarrassing situation and lower cannelure, on the piston rod be located at the middle piston on the upside of be provided with spacer portion
The upper cannelure of the top bar of part；
The lower piston is socketed on the piston rod and gets out of a predicament or an embarrassing situation described in abutting and be fastened in the lower ring by a lower circlip
To compress the lower piston, the upper piston is socketed on the piston rod and abuts the top bar and passes through to block on one shape groove
Spring is fastened in the upper cannelure to compress the upper piston.
6. three layers of piston-cylinder according to claim 5, it is characterised in that：The lower piston and the lower cylinder body and described
Lower exterior seal ring and lower inner seal ring is respectively equipped between piston rod；It is close that China and foreign countries are provided between the middle piston and the middle cylinder body
Seal；Exterior seal ring and upper inner seal ring is respectively equipped between the upper piston and the upper cylinder body and the piston rod.
7. three layers of piston-cylinder according to any one of claim 1～6, it is characterised in that：The piston rod is along its axial direction
Hollow hole is offered in the middle part of direction, female thread is provided with the hollow hole, and on the female thread, adaptation is connected to and can go up downward
The limited screw of section, the limited screw are provided with the U-lag for hanging the T-shaped head of the needle.
8. three layers of piston-cylinder according to claim 7, it is characterised in that：On the female thread also adaptation be connected to it is useful
In the fastening screw for locking the limited screw.
9. three layers of piston-cylinder according to any one of claim 1～6, it is characterised in that：Three layers of piston-cylinder is also
Including alignment pin and fixing screws, the lower cylinder body being stacked, lower clapboard, middle cylinder body, upper spacer and upper cylinder body are equipped with
Position correspondence and connect location hole and fixing hole, the alignment pin wear the location hole with to the lower cylinder body, lower clapboard,
Middle cylinder body, upper spacer and upper cylinder body realize positioning, the fixing screws wear the fixing hole with to the lower cylinder body, under every
Plate, middle cylinder body, upper spacer and upper cylinder body realize locking.
10. three layers of piston-cylinder according to any one of claim 1～6, it is characterised in that：Three layers of piston-cylinder is also
Including the cooling water block being stacked below the lower cylinder body, the sidepiece of the cooling water block is provided with water inlet and outlet,
The inside of the cooling water block is additionally provided with the cooling duct for connecting the water inlet and the outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611270038.6A CN106523464A (en) | 2016-12-30 | 2016-12-30 | Three-layer piston cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611270038.6A CN106523464A (en) | 2016-12-30 | 2016-12-30 | Three-layer piston cylinder |
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| CN106523464A true CN106523464A (en) | 2017-03-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611270038.6A Pending CN106523464A (en) | 2016-12-30 | 2016-12-30 | Three-layer piston cylinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107178535A (en) * | 2017-06-26 | 2017-09-19 | 宁波卓益控制技术有限公司 | Oil cylinder controller |
| CN108730248A (en) * | 2018-07-24 | 2018-11-02 | 中国航空制造技术研究院 | A kind of pneumatic actuating device for composite material multifibres Shu Duli severings |
| CN109210032A (en) * | 2017-07-07 | 2019-01-15 | 东京毅力科创株式会社 | cylinder |
| CN109397632A (en) * | 2018-11-29 | 2019-03-01 | 浙江思纳克热流道科技有限公司 | Valve needle of hot runner control structure and its control method |
| CN111813081A (en) * | 2020-07-02 | 2020-10-23 | 佛山市利涛电子科技有限公司 | Temperature controller life test equipment |
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Application publication date: 20170322 |