CN108443261A - A kind of die casting machine hydraulic cylinder nested structure - Google Patents
A kind of die casting machine hydraulic cylinder nested structure Download PDFInfo
- Publication number
- CN108443261A CN108443261A CN201810477162.2A CN201810477162A CN108443261A CN 108443261 A CN108443261 A CN 108443261A CN 201810477162 A CN201810477162 A CN 201810477162A CN 108443261 A CN108443261 A CN 108443261A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- cavity
- piston
- booster cavity
- sheath
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- F15B15/1423—Component parts; Constructional details
-
- 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
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
Abstract
The invention discloses a kind of die casting machine double-cylinder type structured liquid cylinder pressures, including cylinder assembly, piston assembly and the second cavity, the cylinder assembly includes outer cylinder sheath, the bosom of the outer cylinder sheath has lateral inner cylinder liner, the first cavity is set as between the outer cylinder sheath and inner cylinder liner, one end of the outer cylinder sheath and inner cylinder liner homonymy offers opening, the piston assembly includes piston end surface and cylinder, the cylinder is in the side of piston end surface, and one end circumferential outer surface of the cylinder far from piston end surface has casting lug thereon, the casting lug thereon side of the piston is inserted into the inside of the first cavity by opening, the set cylinder structure, compared with conventional cylinder supercharging mode, it can avoid the restriction that piston rod intensity expands hydraulic cylinder pressure ratio.In die casting machine in use, hydraulic system can be made substantially to be pressurized by hydraulic cylinder, 5 times or more in system pressure of boost pressure so that the supercharging link during die casting machine injection possesses the effect for preferably squeezing feeding.
Description
Technical field
The present invention relates to die casting machine technical field, specifically a kind of die casting machine hydraulic cylinder nested structure.
Background technology
The injection process of die casting machine production product is roughly divided into three phases：Slow shot --- fast shot is pressurized.Wherein increase
Pressure ring section is realized by the hydraulic system in die casting machine.In existing die casting machine, boosting method mainly has：1, pass through
Increase a force (forcing) pump in hydraulic system so that the pressure of integrated hydraulic system rises；2, a supercharging is added in systems
Accumulator opens supercharging accumulator in supercharging link, increases system pressure；3, increased by the piston area of hydraulic cylinder ratio
Pressure.
Wherein, at present the most widely used for thirdly, fluid enters hydraulic cylinder from the right end of hydraulic cylinder, passes through piston or so
The effective area ratio at both ends realizes the supercharging of fluid so that the oil liquid pressure that piston left end obtains increases.Wherein, oil liquid pressure
Increase the effective area ratio that multiple is equal to piston left and right ends.The method can make die casting machine be easier to realize the supercharging of fluid.
But this hydraulic cylinder is generally only capable of making the boost pressure of die casting machine to increase 2 times, can not further increase pressure, it is former
Because as follows：
1, in the case where not increasing the size cases that hydraulic cylinder is integrally taken up space, the supercharging multiple of hydraulic cylinder is made to increase, then
The effective area ratio of hydraulic cylinder piston left and right ends must be expanded, i.e. the piston rod of left end is thin as far as possible so that piston left end
Effective area is small as far as possible relative to the rodless cavity piston area of right end.But the pressure that is subject to due to piston rod is increased,
To make the intensity of piston rod meet the requirements, then piston rod must be thicker, the case where this requires piston rod to attenuate with supercharging mutual lance
Shield is formed and is restricted, and limits the supercharging multiple of such hydraulic cylinder supercharging so that on general die casting machine, can only reach 2 times
Supercharging.
It 2, can in order to not only increase the effective area ratio of piston rod chamber and rodless cavity, but also the mechanical strength of increase piston rod
Expand the size of directly entire hydraulic cylinder.But the method can make hydraulic cylinder huge, considerably beyond the open ended hydraulic cylinder of die casting machine
Size can not use.
Generally speaking, existing hydraulic cylinder structure shown in FIG. 1 is only capable of making the pressure of fluid in die casting machine injection system
Power obtains 2 times or so of amplification, supercharging effect unobvious.
Invention content
The purpose of the present invention is to provide a kind of die casting machine hydraulic cylinder nested structures, to solve in the prior art ask
Topic.
To achieve the above object, the present invention provides the following technical solutions：A kind of die casting machine hydraulic cylinder nested structure, including
Cylinder assembly, piston assembly, the second cavity, the cylinder assembly include outer cylinder sheath, and the bosom of the outer cylinder sheath has transverse direction
Inner cylinder liner, the first cavity is set as between the outer cylinder sheath and inner cylinder liner, one end of the outer cylinder sheath and inner cylinder liner homonymy is equal
Opening is offered, the piston assembly includes piston end surface and cylinder, and the cylinder is in the side of piston end surface, and cylinder is separate
One end circumferential outer surface of piston end surface has casting lug thereon, the casting lug thereon to be inserted into the inside of the first cavity by opening with cylinder,
First cavity is divided into the first booster cavity and cushion chamber by casting lug thereon with cylinder, and the casting lug thereon in piston is arranged in first booster cavity
Side, the cushion chamber are arranged between piston cylinder and outer cylinder sheath, and second cavity includes oil duct and the second booster cavity, institute
Oil duct to be stated to be arranged in the inside of inner cylinder liner and lead to the second booster cavity, second booster cavity is arranged in the inside of piston cylinder,
The outer cylinder sheath offers cushion chamber hydraulic fluid port in its contact portion with cushion chamber, and cushion chamber hydraulic fluid port is connected with cushion chamber
It is logical, the second booster cavity hydraulic fluid port is offered between the outer cylinder sheath and oil duct, and the second booster cavity hydraulic fluid port is connected with oil duct, it is described
The first booster cavity hydraulic fluid port is offered between outer cylinder sheath and the first booster cavity, and the first booster cavity hydraulic fluid port is connected with the first booster cavity
It is logical, and be disconnected with each other between the second booster cavity hydraulic fluid port and the first booster cavity hydraulic fluid port.
Preferably, the outer diameter of the cylinder is equal to the internal diameter of opening.
Preferably, the internal diameter of second cavity is equal to the outer diameter of inner cylinder liner.
Preferably, the outer diameter of the casting lug thereon of the piston cylinder is equal to the outer diameter of the first cavity.
Preferably, the effective area of first booster cavity is more than the effective area of the second booster cavity.
Compared with prior art, the beneficial effects of the invention are as follows：The set cylinder structure, with conventional cylinder supercharging mode phase
Than can avoid the restriction that piston rod intensity expands hydraulic cylinder pressure ratio.In die casting machine in use, hydraulic system can be made to pass through
Hydraulic cylinder is substantially pressurized, 5 times or more in system pressure of boost pressure so that the supercharging link during die casting machine injection
Possess the effect for preferably squeezing feeding.
Description of the drawings
Fig. 1 is the schematic cross-sectional view of the present invention.
Fig. 2 is the schematic cross-sectional view of cylinder assembly of the present invention.
Fig. 3 is the schematic cross-sectional view of inventive piston assembly.
Fig. 4 is the side view internal structure schematic diagram of the present invention.
Fig. 5 is the stereogram of inventive piston assembly.
In figure：1, cylinder assembly；11, outer cylinder sheath；12, it is open；13, inner cylinder liner；2, piston assembly；21, bottom plate；22, circle
Cylinder；23, casting lug thereon；3, the first cavity；31, the first booster cavity；32, cushion chamber；4, hydraulic stem；5, the second cavity；51, oil duct；
52, the second booster cavity；6, the first booster cavity hydraulic fluid port；7, cushion chamber hydraulic fluid port；8, the second booster cavity hydraulic fluid port.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig.1~5, in the embodiment of the present invention, a kind of die casting machine hydraulic cylinder nested structure, including cylinder assembly 1,
Piston assembly 2 and the second cavity 5, cylinder assembly 1 include outer cylinder sheath 11, and the bosom of outer cylinder sheath 11 has lateral inner cylinder liner
13, the inside of inner cylinder liner 13 is used to form oil duct 51, and the first cavity 3 is set as between outer cylinder sheath 11 and inner cylinder liner 13, and first is empty
Chamber 3 is used to form the first booster cavity 31 and cushion chamber 32, and outer cylinder sheath 11 and one end of 13 homonymy of inner cylinder liner offer opening 12,
Opening 12 includes bottom plate 21 and cylinder 22 for being inserted into piston assembly 2, piston assembly 2, and the outer diameter of cylinder 22 is equal to opening 12
Internal diameter, cylinder 22 is fixed on the side of bottom plate 21, and one end circumferential outer surface of the cylinder 22 far from bottom plate 21 is fixed with casting lug thereon
23, casting lug thereon 23 is used to the first cavity 3 being divided into 32 two cavitys of the first booster cavity 31 and cushion chamber, the boss of piston cylinder
23 outer diameter is equal to the outer diameter of the first cavity 3, and casting lug thereon 23 is inserted into the inside of the first cavity 3 with cylinder 22 by opening 12, and
Casting lug thereon 23 and cylinder 22 divide the first cavity 3 for the first booster cavity 31 and cushion chamber 32, and the first booster cavity 31 is used for piston
Assembly 2 is pressurized, and cushion chamber 32 is used for displacement of the damper piston assembly 2 inside the first cavity 3, and the setting of the first booster cavity 31 exists
Side of the casting lug thereon 23 far from bottom plate 21, cushion chamber 32 are arranged in casting lug thereon 23 close to the side of bottom plate 21, and the second cavity 5 includes
Oil duct 51 and the second booster cavity 52, the internal diameter of second cavity 5 are equal to the outer diameter of inner cylinder liner 13, and oil duct 51 is arranged in inner cylinder liner
13 inside, the effective area of the first booster cavity 31 is more than the effective area of the second booster cavity 52, and the setting of the second booster cavity 52 exists
The inside of cylinder 22, oil duct 51 enter the channel of the second booster cavity 52 as oil, and the second booster cavity 52 is used to increase to piston assembly 2
The lower section of pressure, outer cylinder sheath 11 offers cushion chamber hydraulic fluid port 7, and cushion chamber hydraulic fluid port 7 and buffering close to the side of the second booster cavity 52
Chamber 32 is connected, and 7 oil disengaging cushion chamber 32 of cushion chamber hydraulic fluid port, the lower section of outer cylinder sheath 11 offers second far from the side of bottom plate 21
Booster cavity hydraulic fluid port 8, and the second booster cavity hydraulic fluid port 8 is connected with oil duct 51, the second booster cavity hydraulic fluid port 8 for oil into oil road 51,
Side of the lower section of outer cylinder sheath 11 far from bottom plate 21 offers the first booster cavity hydraulic fluid port 6, and the first booster cavity hydraulic fluid port 6 and first increases
Pressure chamber 31 is connected, and the first booster cavity hydraulic fluid port 6 is for oil the first booster cavity 31 of disengaging, and the second booster cavity hydraulic fluid port 8 is located at first
The side of booster cavity hydraulic fluid port 6.
The present invention operation principle be：Injection at a slow speed during die casting machine injection and quick injection stage, fluid into
Enter the second booster cavity 52, piston assembly 2 is pushed to be moved to the direction of hydraulic stem 4 in the inside of cylinder assembly 1, in cylinder assembly 1
Fluid then by cushion chamber 32 bottom righthand side cushion chamber hydraulic fluid port 7 flow out, reach small oil push away large cylinder as a result, complete die casting machine
Elemental motion.This set cylinder structure, the oil liquid pressure in the second booster cavity 52 and the first booster cavity 31 are all system pressure.Commonly
Only by 52 oil inlet of the second booster cavity when use, fluid is entered the inside of oil duct 51 by the second booster cavity hydraulic fluid port 8, enters back into second
Booster cavity 52；In use, just making 31 oil inlet of the first booster cavity, fluid enters the first supercharging by the first booster cavity hydraulic fluid port 6 for supercharging
Chamber 31 acts on the first booster cavity 31 due to fluid and increases with pressure that on the second booster cavity 52, piston rod 4 obtains simultaneously,
Increase multiple be 31 effective area of the first booster cavity plus 52 effective area of the second booster cavity and with the second booster cavity 52 effectively
The ratio of area.So in the case where 1 overall dimensions of cylinder assembly are certain, to increase hydraulic system pressure ratio, it is possible to increase first
52 effective area ratio of booster cavity 31 and the second booster cavity, that is, allow the second booster cavity 52 that the first booster cavity 31 is decreased or increased.And subtract
Small second booster cavity 52 can reduce the hollow core portion of piston rod 4, enhance piston rod semi-finals degree；Increase the first booster cavity 31, work can be made
Stopper rod 4 becomes thicker, to enhance piston rod semi-finals degree.Expanding pressure ratio will not be restricted by piston rod semi-finals degree, can make
The pressure ratio of cylinder assembly 1 reaches 5 times or more.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (5)
1. a kind of die casting machine hydraulic cylinder nested structure, including cylinder assembly (1), piston assembly (2) and the second cavity (5),
It is characterized in that：The cylinder assembly (1) includes outer cylinder sheath (11), and the bosom of the outer cylinder sheath (11) has lateral inner cylinder liner
(13), the first cavity (3), the outer cylinder sheath (11) and inner cylinder liner are set as between the outer cylinder sheath (11) and inner cylinder liner (13)
(13) one end of homonymy offers opening (12), and the piston assembly (2) includes piston end surface (21) and cylinder (22), described
Cylinder (22) is in the side of piston end surface (21), and one end circumferential outer surface of the cylinder (22) far from piston end surface (21) has protrusion
Block (23), the casting lug thereon (23) and cylinder (22) are inserted into the inside of the first cavity (3) by opening (12), casting lug thereon (23) with
First cavity (3) is divided into the first booster cavity (31) and cushion chamber (32) by cylinder (22), and the first booster cavity (31) setting exists
The casting lug thereon side (23) of piston, the cushion chamber (32) are arranged between piston cylinder (22) and outer cylinder sheath (11), and described the
Two cavitys (5) include oil duct (51) and the second booster cavity (52), and the oil duct (51) is arranged in the inside of inner cylinder liner (13) and leads to
To the second booster cavity (52), second booster cavity (52) is arranged in the inside of piston cylinder (22), and the outer cylinder sheath (11) exists
It offers cushion chamber hydraulic fluid port (7) in contact portion with cushion chamber (32), and cushion chamber hydraulic fluid port (7) is connected with cushion chamber (32)
It is logical, offer the second booster cavity hydraulic fluid port (8) between the outer cylinder sheath (11) and oil duct (51), and the second booster cavity hydraulic fluid port (8) and
Oil duct (51) is connected, and the first booster cavity hydraulic fluid port (6), and are offered between the outer cylinder sheath (11) and the first booster cavity (31)
One booster cavity hydraulic fluid port (6) is connected with the first booster cavity (31), and the second booster cavity hydraulic fluid port (8) and the first booster cavity hydraulic fluid port (6)
Between be disconnected with each other.
2. a kind of die casting machine hydraulic cylinder nested structure according to claim 1, it is characterised in that：The cylinder (22)
Outer diameter is equal to the internal diameter of opening (12).
3. a kind of die casting machine hydraulic cylinder nested structure according to claim 1, it is characterised in that：Second cavity
(5) internal diameter is equal to the outer diameter of inner cylinder liner (13).
4. a kind of die casting machine hydraulic cylinder nested structure according to claim 1, it is characterised in that：The piston cylinder
The outer diameter of casting lug thereon (23) is equal to the outer diameter of the first cavity (3).
5. a kind of die casting machine hydraulic cylinder nested structure according to claim 1, it is characterised in that：First booster cavity
(31) effective area is more than the effective area of the second booster cavity (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810477162.2A CN108443261A (en) | 2018-05-18 | 2018-05-18 | A kind of die casting machine hydraulic cylinder nested structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810477162.2A CN108443261A (en) | 2018-05-18 | 2018-05-18 | A kind of die casting machine hydraulic cylinder nested structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108443261A true CN108443261A (en) | 2018-08-24 |
Family
ID=63203938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810477162.2A Pending CN108443261A (en) | 2018-05-18 | 2018-05-18 | A kind of die casting machine hydraulic cylinder nested structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108443261A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113059070A (en) * | 2020-11-20 | 2021-07-02 | 宁波市鄞州派合机械有限公司 | Vertical pipe buckling machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000097206A (en) * | 1998-09-24 | 2000-04-04 | Kayaba Ind Co Ltd | Hydraulic cylinder |
| CN201606340U (en) * | 2010-01-29 | 2010-10-13 | 湖南特力液压有限公司 | Fast forward oil cylinder |
| CN202220770U (en) * | 2011-09-01 | 2012-05-16 | 无锡市长江液压缸厂 | Quick air-intake hydraulic cylinder |
| CN104196813A (en) * | 2014-07-25 | 2014-12-10 | 江苏佳晨华科机械技术研究院有限公司 | Fast die closingoil cylinder used for high-speed die-casting machine |
| CN205689515U (en) * | 2016-06-15 | 2016-11-16 | 苏州同大机械有限公司 | The rapid mould opening-closing cylinder structure of plastic product molding machine |
-
2018
- 2018-05-18 CN CN201810477162.2A patent/CN108443261A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000097206A (en) * | 1998-09-24 | 2000-04-04 | Kayaba Ind Co Ltd | Hydraulic cylinder |
| CN201606340U (en) * | 2010-01-29 | 2010-10-13 | 湖南特力液压有限公司 | Fast forward oil cylinder |
| CN202220770U (en) * | 2011-09-01 | 2012-05-16 | 无锡市长江液压缸厂 | Quick air-intake hydraulic cylinder |
| CN104196813A (en) * | 2014-07-25 | 2014-12-10 | 江苏佳晨华科机械技术研究院有限公司 | Fast die closingoil cylinder used for high-speed die-casting machine |
| CN205689515U (en) * | 2016-06-15 | 2016-11-16 | 苏州同大机械有限公司 | The rapid mould opening-closing cylinder structure of plastic product molding machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113059070A (en) * | 2020-11-20 | 2021-07-02 | 宁波市鄞州派合机械有限公司 | Vertical pipe buckling machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104084469A (en) | Tee pipe hydraulic molding device | |
| CN105971959B (en) | A kind of differential off-load safety valve | |
| CN102788061A (en) | Low-flow fast movable cylinder | |
| CN202946472U (en) | Small-flow fast-moving oil cylinder | |
| CN108443261A (en) | A kind of die casting machine hydraulic cylinder nested structure | |
| CN107939767A (en) | A kind of oil supplementation buffer valve | |
| CN204984759U (en) | Novel plunger pump | |
| CN204628680U (en) | Automobile tailboard constant load pressure-compensated valve | |
| CN103453178B (en) | A kind of hydraulic brake valve of feedback piston of valve core | |
| CN104074837A (en) | Buffering oil cylinder | |
| CN205639153U (en) | Supercharging device , hydraulic system and mechanical equipment | |
| CN105545873A (en) | Internal differential cylinder structure and injection method thereof | |
| CN110273869A (en) | Adaptive varying clearance seal ultra-high pressure water supercharger | |
| CN208281274U (en) | Two-stage telescopic cylinder and engineering machinery with it | |
| CN105041914B (en) | A kind of twin-stage clutch general pump and vehicle | |
| CN205118326U (en) | Hydraulic damper for elevator | |
| CN108661974A (en) | Hydraulic cylinder buffer-oriented nested structure | |
| CN112303044A (en) | Pressurizing oil cylinder | |
| CN205823774U (en) | A kind of differential off-load relief valve | |
| CN214331057U (en) | High-pressure unloading structure of hydraulic cylinder | |
| CN203962542U (en) | The high speed compound oil cylinder that a kind of servovalve drives | |
| CN202326133U (en) | Automatic balance adjustment structure for hydraulic oil mass of diaphragm pump | |
| CN106907370A (en) | A kind of multi-cavity high thrust energy saving cylinder | |
| CN210660814U (en) | Constant speed oil cylinder | |
| CN205533533U (en) | Interior differential cylinder structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180824 |
|
| RJ01 | Rejection of invention patent application after publication |