CN105909591A - Fast mold opening and closing oil cylinder structure of plastic product forming machine - Google Patents
Fast mold opening and closing oil cylinder structure of plastic product forming machine Download PDFInfo
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- CN105909591A CN105909591A CN201610428256.1A CN201610428256A CN105909591A CN 105909591 A CN105909591 A CN 105909591A CN 201610428256 A CN201610428256 A CN 201610428256A CN 105909591 A CN105909591 A CN 105909591A
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- oil
- piston rod
- end cap
- cylinder
- oil cylinder
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- 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
- F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
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- 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
- F15B15/20—Other details, e.g. assembly with regulating devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a fast mold opening and closing oil cylinder structure of a plastic product forming machine. The fast mold opening and closing oil cylinder structure comprises a machine frame; the machine frame comprises a pair of left mold base guide rails, a pair of right mold base guide rails, a left mold base, a right mold base, a pair of oil cylinder frame guide rails, an oil cylinder frame and a pair of lower pull rods. The fast mold opening and closing oil cylinder structure further comprises an oil cylinder, a large piston rod, a small piston rod and a control mechanism; the oil cylinder comprises an oil cylinder sleeve, a left oil cylinder end cover and a right oil cylinder end cover. The fast mold opening and closing oil cylinder structure is characterized by further comprising an oil storage tank arranged at the upper part of the machine frame; the outer wall of the left end of the small piston rod placed inside a small piston rod containing cavity is matched with the cavity wall of the small piston rod containing cavity; when hydraulic oil is guided into a large piston rod inner oil cavity, the large piston rod moves leftwards and drives the right mold base to move leftwards and the left mold base and the oil cylinder frame to move rightwards, the left mold base and the right mold base do the mold-closing motion, when the left mold base and the right mold base lock molds, high-pressure oil is guided into a right cylinder cavity by an oil pipe connector of the right oil cylinder end cover, and a small piston rod oil way oil inlet and return port keeps guiding the hydraulic oil into the large piston rod inner oil cavity. According to the structure, the manufacturing difficulty is lowered, and the mold closing speed is increased.
Description
Technical field
The invention belongs to plastic molding machine technical field, be specifically related to the rapid mould opening-closing cylinder structure of a kind of plastic product molding machine.
Background technology
Above mentioned plastic refers mainly to but is the most definitely limited to refer to hollow plastic product, the most various plastic containers of hollow plastic product, piling bucket or even pallet (pallet such as CN102407967B, CN103253442A and CN102009774B), etc..
As is known in the industry, one product of the every molding of plastic product molding machine just needs once to open mould assembling action, this may refer to CN101890772B(open, clamping), the magnetic mold closing device of CN101890805B(hollow plastic product molding machine), CN102357948A(embraces elbow formula clasp mould mechanism), the clamping apparatus of CN102848558B(hollow plastic product molding machine), the Horizontal matched mould machine structure of CN103522528B(blow molding), the clamping apparatus of CN103587109B(hollow plastic product molding machine) and the clamping apparatus structure of CN103538244B(hollow plastic product molding machine), etc..
And then as is known in the industry; the volume of the plastic of wanted molding is the biggest; the stroke of the oil cylinder of the structural system of clasp mould mechanism is also the biggest; and by enough clamp forces, it need to be locked after two half modules (i.e. a pair half module) matched moulds puts in place; to ensure the Forming Quality of plastic, the most likely molding is failed or leaves matched moulds seam or overlap on plastic.Additionally, there is cause effect relation between speed speed and the shaping efficiency of plastic of folding mould.
Previously, in order to meet the requirement of folding mould and locked mode, generally it is equipped with folding mould oil cylinder and Mode-locking oil cylinder, as a example by two oil cylinders, one oil cylinder performs rapid mould opening-closing, locked mode at a slow speed taken on by another oil cylinder, so structure can cause hydraulic system pipeline complicated, especially need by high pressure and big flow to meet folding mould and locked mode requirement, the motor adapted to this and the power of oil pump are the most corresponding bigger, thus both added the cost of complete plastic product molding machine, bring again the increase of energy consumption and be contrary to the energy-saving economic spirit of economizing type that the current whole society advocates, also it is unfavorable for oil cylinder service life in reasonable length of service.
Certainly, i.e. realize rapid mould opening-closing with less hydraulic oil with the low discharge of oil cylinder and can solve aforementioned technical problem, and this type of technical information has been seen in disclosed Chinese patent literature, " the large-scale blow molding machine folding mould oil cylinder structure " that " a kind of quick die cylinder for high speed die casting machine " typically recommended such as CN104196813A and CN104653542A provide.
Above-mentioned CN104196813A is owing to have employed outer cylinder and inner cylinder tube, thus not only structure is complicated, and volume is big, is unfavorable on the plastic product molding machine that structure is harsh application；Owing to above-mentioned CN104653542A designs for plastic product molding machine, thus objectively can cash the technique effect described in its description the 0005th section, but there is following shortcoming: one, owing to small piston rod (patent does not provides reference and component names) and cylinder block integral production being formed the "convex" shaped structure of Chinese character, thus difficulty of processing is big；They are two years old, owing to big piston rod (patent claims piston rod) is only slidably matched by between inwall and the inwall of small piston rod of the piston area of its base portion, and the internal diameter of the piston oil-cylinder alleged by other region i.e. patent of big piston rod is noticeably greater than the external diameter of small piston rod and forms a bigger piston oil pocket, on the one hand then it is not enough to because piston oil pocket volume is big to be embodied under the hydraulic oil situation of low discharge and promotes big piston rod and make the desired effects of big piston rod fast offset, still affect the speed of folding mould, the action stability of the biggest piston rod is affected the most accordingly；They are three years old, according to the description of its description the 0011st and 0012 section and combine diagram and understand, owing to when locked mode, oil cylinder chamber (patent claims oil cylinder back cavity) does not have the thrust to big piston rod, thus realize locked mode simply by virtue of the effect of the pressure oil of oil pocket in big piston rod during locked mode, then clamp force is fragile, and the quality of locked mode effect can affect the Forming Quality of plastic to a great extent；They are four years old, patent is not given entering, oil return opening implements the valve arrangement that controls and with enter, the enlightenment of oil pipe pipeline structure that oil return opening is connected, but these technology essential factors ensure that whether and a key factor overlooked either of the two of functional reliability rapid mould opening-closing cylinder efficient exactly.
For above-mentioned prior art, still there is necessity of improvement, made useful design for this applicant, define technical scheme described below, and under taking secrecy provision, the test center in the application is simulated test, and result proves practicable.
Summary of the invention
The task of the present invention is to provide a kind of contributing to small piston rod and big piston rod to be constituted split type assembled relation each other and uses and significantly reduce manufacture difficulty；The small piston rod accommodated for small piston rod being conducive to making being formed on big piston rod accommodates the diameter in chamber and the external diameter good conformity each other of small piston rod and uses stability when making when substantially reducing fluid quantity delivered big piston rod together with the quick matched moulds of mould bases and ensure big piston rod displacement and save energy consumption, be of value to when big piston rod is stretched over position and implements locked mode, and in big piston rod, the pressure in oil pocket works in coordination with that pressure that the cylinder intracavity between big piston rod and oil cylinder overlap produces is double to be passed through neat using big piston rod effect lowerly and significantly increase clamp force and ensure the Forming Quality of plastic and have the oil inlet and oil return control effect being easy to ensure small piston rod oil duct and cylinder chamber well and use the rapid mould opening-closing cylinder structure of the plastic product molding machine of the reliability embodying big piston rod action.
nullThe task of the present invention is performed by，A kind of rapid mould opening-closing cylinder structure of plastic product molding machine，Described plastic hollow formation machine includes a frame，This frame includes a pair left mould frame guide rail the most corresponding each other、The right mould bases guide rail corresponded to each other equally for a pair、It is movably arranged at the left mould frame on a pair left mould frame guide rail、Corresponding to the right side of left mould frame and be movably arranged at the right mould bases on a pair right mould bases guide rail、That arrange corresponding to the right side of a pair right mould bases guide rail and the most each other before and after corresponding a pair cylinder rack guide rail、Corresponding to the right side of right mould bases and be movably arranged at the cylinder rack on a pair cylinder rack guide rail、Be attached between left mould frame and the top of cylinder rack and each other before and after the most corresponding a pair upper connecting rod and be attached between left mould frame and the bottom of cylinder rack and the most corresponding a pair lower link；Described rapid mould opening-closing cylinder structure includes an oil cylinder, and this oil cylinder includes an oil cylinder set, an oil cylinder left end cap and an oil cylinder right end cap, oil cylinder set with the horizontally-arranged state support of level in described cylinder rack, oil cylinder left end cap
Seal with the left end of oil cylinder set and coordinate, the right-hand member that oil cylinder right end cap overlaps with oil cylinder seals and coordinates, on oil cylinder left end cap and be positioned at the sidepiece of oil cylinder left end cap and be fixed with an oil cylinder left end cap oil connection, on oil cylinder right end cap and be positioned at the sidepiece of oil cylinder right end cap and be fixed with an oil cylinder right end cap oil connection, and just side to oil cylinder left end cap offers oil cylinder right end cap quick oil feeding hole at oil cylinder right end cap；nullOne big piston rod and a small piston rod，In the central authorities of big piston rod and be positioned at the length direction of big piston rod and offer a small piston rod and accommodate chamber，This small piston rod accommodates the right-hand member in chamber and does not closes，The left end of big piston rod is slidably matched with described oil cylinder left end cap and is connected behind the left side being stretched over oil cylinder left end cap and has a mould bases union joint，This mould bases union joint is connected with the right-hand member of described right mould bases，Right-hand member at big piston rod is provided with a piston，Space between left surface and the described oil cylinder left end cap of this piston is configured to left cylinder cavity，And the space between the right flank of piston and described oil cylinder right end cap is configured to right cylinder cavity，Described left end cap oil connection communicates with left cylinder cavity，And described right end cap oil connection and oil cylinder right end cap quick oil feeding hole communicate with right cylinder cavity，The left end of small piston rod is placed in described small piston rod and accommodates intracavity，And the right-hand member of small piston rod leans out small piston rod and accommodates the right-hand member in chamber and be limited on oil cylinder right end cap in the middle position corresponding to described oil cylinder right end cap，A small piston rod oil duct is offered in the middle position of the length direction of this small piston rod，This small piston rod oil duct is through to right-hand member from the left end of small piston rod，A small piston rod oil duct oil inlet and oil return interface it is provided with in the position of the right-hand member port corresponding to small piston rod oil duct，The space that the left end end face of small piston rod and small piston rod accommodate between the small piston rod receiving chamber diapire in chamber is configured to oil pocket in big piston rod；One controlling organization
, this controlling organization is arranged in described frame and is connected with described oil cylinder left end cap oil connection, oil cylinder right end cap oil connection, oil cylinder right end cap quick oil feeding hole and small piston rod oil duct oil inlet and oil return interface hydraulic oil pipe pipeline；nullIt is characterised by also including an oil tank，This oil tank is arranged on the top of described frame and controls to be connected with described controlling organization in the position on the right side corresponding to described cylinder rack，The outer wall of left end being placed in the described small piston rod that described small piston rod accommodates intracavity is slidably matched with the cavity wall in small piston rod receiving chamber，When by described small piston rod oil duct hydraulic oil to be introduced oil pocket in described big piston rod by described small piston rod oil inlet and oil return interface，Described big piston rod displacement to the left is also driven described right mould bases to left dislocation by big piston rod，Left mould frame described in Tong Shi and cylinder rack displacement to the right，Left、Right mould bases is in the matched moulds kinestate of displacement toward each other，Fluid in the most described left cylinder cavity leads to described controlling organization from described oil cylinder left end cap oil connection，Described oil cylinder right end cap quick oil feeding hole introduces fluid to right cylinder cavity，And when a left side、When right mould bases tends to closing up each other and implementing locked mode，Oil cylinder right end cap oil connection is by the right cylinder cavity described in hydraulic oil introducing，And described small piston rod oil duct oil inlet and oil return interface continues to be held in oil pocket in described big piston rod and introduces the state of hydraulic oil.
In a specific embodiment of the present invention, the middle part of the length direction overlapped at described oil cylinder and be positioned on the outer wall of oil cylinder set and be fixed with an oil cylinder set mounting flange, this oil cylinder set mounting flange overlaps mounting flange screw by oil cylinder to be fixed with described cylinder rack.
In another specific embodiment of the present invention, the left end inwall of described oil cylinder left end cap offers a pair left end cap seal groove, a left sealing ring of left end cap respectively it is embedded with in this is to left end cap seal groove, the left end outer wall sealing ring left with left end cap of described big piston rod seals and coordinates, and the middle part of oil cylinder left end cap is fixed screw by left end cap and is fixed with the left end end face that described oil cylinder overlaps, the right-hand member of oil cylinder left end cap probes in described left cylinder cavity and is provided with left end cap cylinder liner packing ring on the right-hand member outer wall of this oil cylinder left end cap, this left end cap cylinder liner packing ring coordinates with the inner wall sealing of left cylinder cavity.
In another specific embodiment of the present invention, the left end described right cylinder cavity of insertion of described oil cylinder right end cap is interior and is provided with a pair right end cap sealing ring on the outer wall of the left end of this oil cylinder right end cap, and right end cap sealing ring is coordinated by this with the inner wall sealing of right cylinder cavity.
In another specific embodiment of the present invention, the left end end face of described big piston rod is constituted and has a connection screw rod head, the right-hand member of described mould bases union joint is with to be connected screw rod head threaded, and the left end of mould bases union joint constitutes and has a union joint pin shaft hole and be provided with a lining in this union joint pin shaft hole, mould bases union joint is articulated and connected by the right side of the union joint bearing pin that is placed in union joint pin shaft hole with described right mould bases.
In an also specific embodiment of the present invention, right-hand member at described big piston rod and the position on the right side corresponding to described piston are fixed with a piston end cap by piston end cap screw, the inwall of this piston end cap is provided with pair of pistons end cap seal circle, piston end cap sealing ring is coordinated by this with the right-hand member outer wall sealing of described small piston rod, and also screwing one on piston end cap and limit nut for the piston limiting the right side of described piston, this piston limits the right flank patch of nut and piston and touches.
In more and in a specific embodiment of the present invention, right-hand member at described big piston rod and the position in the left side corresponding to described piston are constituted has a piston to limit step, the left surface of piston and this piston limit step sticker and touch, it is provided with pair of pistons inner seal ring on big piston rod and in the position of the inwall corresponding to piston, piston inner seal ring is coordinated by this with the inner wall sealing of piston, and on the outer wall of piston, it is provided with a piston ring and pair of pistons exterior seal ring, piston ring is between pair of pistons exterior seal ring, and the right-hand member inner wall sealing that pair of pistons exterior seal ring overlaps with described oil cylinder coordinates.
The present invention's and then in a specific embodiment, a small piston rod resigning hole is offered in the middle position of described oil cylinder right end cap, the right-hand member of described small piston rod matches with this small piston rod resigning hole, and on the outer wall of the right-hand member of this small piston rod, it is provided with a pair small piston rod sealing ring, small piston rod sealing ring is coordinated by this with the hole wall sealing of small piston rod resigning hole, is equipped with a small piston rod lock nut at the position on the right side that small piston rod is stretched over described oil cylinder right end cap.
nullIn the most more and in a specific embodiment of the present invention，Described controlling organization includes oil pump、Fuel tank、First control valve、Second control valve、Valve seat、First check valve and the second check valve，Oil pump matches with fuel tank，And oil pump is connected by oil pump the first oil circuit and the first control valve and is connected by oil pump the second oil circuit and the second control valve，Fuel tank is arranged in described frame together with oil pump，This fuel tank is connected by fuel tank the first oil circuit and the first control valve and is connected by fuel tank the second oil circuit and the second control valve，First control valve and the second control valve are arranged on valve seat，And the first control valve is connected with described oil cylinder right end cap oil connection by the first control valve pipeline，And the second control valve is connected with described oil cylinder left end cap oil connection by control valve the first oil inlet and oil return pipeline and is connected with described small piston rod oil duct oil inlet and oil return interface by control valve the second oil inlet and oil return pipeline，Valve seat is fixed in described frame in the position on the right side corresponding to described oil cylinder right end cap，First check valve is arranged on the first described control valve pipeline，Second control valve is arranged on described control valve the second oil inlet and oil return pipeline，Described oil tank is connected with described valve seat by oil tank pipeline and is communicated with the described quick spill port of oil cylinder right end cap by valve seat，Oil tank pipeline is provided with an oil tank check valve，It is provided with one first oil circuit control between described second check valve and described control valve the first oil inlet and oil return pipeline，And between described oil tank check valve and the first oil inlet and oil return pipeline, it is provided with one second oil circuit control.
In again and then in a specific embodiment of the present invention, described valve seat offers a valve seat oil-in and is equipped with a pair valve seat oil pipe, described oil tank pipeline connects with valve seat oil-in, and valve seat oil-in and a pair valve seat oil pipe communicate, a pair valve seat oil pipe is connected with described oil cylinder right end cap quick oil feeding hole and communicates with oil cylinder right end cap quick oil feeding hole.
The technical scheme that the present invention provides, relative to one of the technique effect of prior art, is carried out mutual cooperation again owing to large and small piston rod is constituted split type individual components each other, thus can be significantly reduced manufacture difficulty；Two, the left end outer wall of cavity wall and small piston rod owing to the small piston rod of big piston rod is accommodated chamber has been carried out and has been slidably matched, thus the volume of oil pocket in significantly reducing big piston rod, only big piston rod need to be made together with right mould bases fast offset to the left when few fluid quantity delivered, both improve the closure pressing speed of left and right mould bases, and ensured again the action stability of big piston rod and energy consumption can be saved significantly on；Three, due to when left and right mould bases completes matched moulds and implements locked mode, because having tended to full oil condition and small piston rod oil duct oil inlet and oil return interface in right cylinder cavity still in oil-feed state, thus oil cylinder right end cap oil connection only needs to introduce minimal amount of hydraulic oil to right cylinder cavity and can realize the locked mode effect of excellence, and then ensure the Forming Quality of plastic；Four, owing to small piston rod oil duct being controlled effect with the oil inlet and oil return in left and right cylinder chamber by controlling organization guarantee, thus the reliability of the action of big piston rod can be ensured.
Accompanying drawing explanation
Fig. 1 is embodiments of the invention schematic diagram.
Fig. 2 is the detailed structure view of the quickly opening and closing mould oil cylinder shown in Fig. 1.
Fig. 3 is the schematic diagram of the controlling organization of the structural system of quickly opening and closing mould oil cylinder of the present invention.
Detailed description of the invention
In order to be more clearly understood from technical spirit and the beneficial effect of the present invention, applicant elaborates the most by way of example, but the description to embodiment is not the restriction to the present invention program, the most pro forma rather than substantial equivalent transformation that is only done by any foundation present inventive concept is regarded as technical scheme category.
The most every relate to upper and lower, left and right, the directivity of front and rear or claim the concept of directionality be all with the location status shown in Fig. 1 and Fig. 2 for, thus being particularly limited to of technical scheme that the present invention is provided can not be understood as.
nullRefer to Fig. 1，Show a frame 7 of the structural system belonging to plastic hollow formation machine，This frame 7 includes a pair left mould frame guide rail 71 the most corresponding each other、The right mould bases guide rail 72 corresponded to each other equally for a pair、It is movably arranged at the left mould frame 73 on a pair left mould frame guide rail 71、Corresponding to the right side of left mould frame 73 and the right mould bases 74 that is movably arranged on a pair right mould bases guide rail 72、That arrange corresponding to the right side of a pair right mould bases guide rail 72 and the most each other before and after corresponding a pair cylinder rack guide rail 75、Corresponding to the right side of right mould bases 74 and the cylinder rack 76 that is movably arranged on a pair cylinder rack guide rail 75、Be attached between left mould frame 73 with the top of cylinder rack 76 and each other before and after the most corresponding a pair upper connecting rod 77 and be attached between left mould frame 73 with the bottom of cylinder rack 76 and the most corresponding a pair lower link 78.
By description above and combine the signal of Fig. 1 and understand: the bottom of left mould frame 73 and a pair left mould frame guide rail 71 constitute guideway, the bottom of right mould bases 74 and a pair right mould bases guide rail 72 constitute guideway, the bottom of cylinder rack 76 and a pair cylinder rack guide rail 75 constitute guideway, and according to specialty general knowledge, on the right side of left mould frame 73, i.e. side towards right mould bases 74 is fixed with left half module in a state of use, and is i.e. fixed with right half module towards the side of left mould frame 73 in the left side of right mould bases 74.The process that left and right mould bases 73,74 closes up displacement the most in opposite directions in opposite directions is commonly called matched moulds process, otherwise is then referred to as die sinking process.After matched moulds, aforesaid left half module and right half module are mutually closed and implement locked mode, the self-evident effect of locked mode is to prevent from occurring between left and right half module gap when to plastic product forming, thus occurs that on plastic matched moulds stitches (also referred to as spue line or joint fin).
Refer to Fig. 2 and continuing with Fig. 1, show an oil cylinder 1 of rapid mould opening-closing cylinder structure system, this oil cylinder 1 includes oil cylinder set 11, one oil cylinder left end cap 12 and an oil cylinder right end cap 13, and oil cylinder overlaps 11 with the horizontally-arranged state support of level in aforesaid cylinder rack 76, oil cylinder left end cap 12
Seal with the left end of oil cylinder set 11 and coordinate, oil cylinder right end cap 13 seals with the right-hand member of oil cylinder set 11 and coordinates, on oil cylinder left end cap 12 and be positioned at the sidepiece (i.e. the wall body of circumferencial direction) of oil cylinder left end cap 12 and be fixed with an oil cylinder left end cap oil connection 121, on oil cylinder right end cap 13 and be positioned at the sidepiece (i.e. the wall body of circumferencial direction) of oil cylinder right end cap 13 and be fixed with an oil cylinder right end cap oil connection 131, and just side to oil cylinder left end cap 12 offers oil cylinder right end cap quick oil feeding hole 132(the present embodiment and has a pair at oil cylinder right end cap 13)；nullShow big piston rod 2 and a small piston rod 3，In the central authorities of big piston rod 2 and be positioned at the length direction of big piston rod 2 and offer a small piston rod and accommodate chamber 21，This small piston rod accommodates the right-hand member in chamber 21 and does not closes，The left end of big piston rod 2 is slidably matched with aforementioned oil cylinder left end cap 12 and is connected behind the left side being stretched over oil cylinder left end cap 12 and has a mould bases union joint 4，This mould bases union joint 4 is connected with the right-hand member of aforementioned right mould bases 74，Right-hand member at big piston rod 2 is provided with a piston 22，Space between left surface and the aforementioned oil cylinder left end cap 12 of this piston 22 is configured to left cylinder cavity 23，And the space between the right flank of piston 22 and aforementioned oil cylinder right end cap 13 is configured to right cylinder cavity 24，Aforesaid left end cap oil connection 121 communicates with left cylinder cavity 23，And aforesaid right end cap oil connection 131 and oil cylinder right end cap quick oil feeding hole 132 communicate with right cylinder cavity 24，The left end of small piston rod 3 is placed in aforementioned small piston rod and accommodates in chamber 21，And the right-hand member of small piston rod 3 leans out small piston rod and accommodates the right-hand member in chamber 21 and be limited on oil cylinder right end cap 13 in the middle position corresponding to aforementioned oil cylinder right end cap 13，A small piston rod oil duct 31 is offered in the middle position of the length direction of this small piston rod 3，This small piston rod oil duct 31 is through to right-hand member from the left end of small piston rod 3，A small piston rod oil duct oil inlet and oil return interface 32 it is provided with in the position of the right-hand member port corresponding to small piston rod oil duct 31，The space that the left end end face of small piston rod 3 and small piston rod accommodate between the small piston rod receiving chamber diapire 211 in chamber 21 is configured to oil pocket 25 in big piston rod；Show that a controlling organization 5(also can claim oil-feeding control mechanism, as follows), this controlling organization 5 is arranged in aforementioned frame 7 and is connected with aforementioned oil cylinder left end cap oil connection 121, oil cylinder right end cap oil connection 131, oil cylinder right end cap quick oil feeding hole 132 and small piston rod oil duct oil inlet and oil return interface 32 hydraulic oil pipe pipeline.
Technical essential as the technical scheme that the present invention provides: also include an oil tank 6 in the system of aforementioned folding mould oil cylinder structure, this oil tank 6 is arranged on the top of aforementioned frame 7 and controls to be connected with aforesaid controlling organization 5 in the position on the right side corresponding to aforementioned cylinder rack 76, and the outer wall of left end being placed in the aforementioned small piston rod 3 in aforementioned small piston rod receiving chamber 21 is slidably matched with the cavity wall in small piston rod receiving chamber 21.
nullWhen by aforementioned small piston rod oil duct 31 hydraulic oil to be introduced oil pocket 25 in aforementioned big piston rod by aforementioned small piston rod oil inlet and oil return interface 32，Aforementioned big piston rod 2 drives aforementioned right mould bases 74 to left dislocation to left dislocation and by big piston rod 2，The most aforesaid left mould frame 73 and cylinder rack 76 displacement to the right，Left、Right mould bases 73、The 74 matched moulds kinestates being in displacement toward each other，Fluid in the most aforementioned left cylinder cavity 23 leads to aforesaid controlling organization 5 from aforementioned oil cylinder left end cap oil connection 121，Oil cylinder right end cap quick oil feeding hole 132 introduces fluid to right cylinder cavity 24，Work as a left side、Right mould bases 73、74 when tending to closing up each other and implementing locked mode，Hydraulic oil is introduced aforementioned right cylinder cavity 24 for oil cylinder right end cap oil connection 131 and small piston rod oil duct oil inlet and oil return interface 32 continues to be held in oil pocket 25 in aforementioned Radix Angelicae Dahuricae (Radix Heraclei Scabridi) stopper rod and introduces the state of hydraulic oil.It follows that before locked mode, realized the fast offset of big piston rod 2 by entering into the hydraulic oil of the low discharge (but pressure is big) of oil pocket 25 in big piston rod, embody the corresponding technique effect described in applicant's superincumbent technique effect hurdle.
Please see Fig. 1 by emphasis, at the middle part of length direction of aforementioned oil cylinder set 11 and be positioned on the outer wall of oil cylinder set 11 and be fixed with an oil cylinder set mounting flange 111, this oil cylinder set mounting flange 111 is by fixing with aforementioned cylinder rack 76 around the oil cylinder set mounting flange screw 1111 of the circumferencial direction distribution of oil cylinder set mounting flange with space state.
The left end inwall of aforementioned oil cylinder left end cap 12 offers a pair left end cap seal groove 122, a left sealing ring of left end cap 1221 respectively it is embedded with in this is to left end cap seal groove 122, the left end outer wall sealing ring left with left end cap 1221 of aforementioned big piston rod 2 seals and coordinates, and the middle part of oil cylinder left end cap 12 is fixed screw 123 by left end cap and is fixed with the left end end face that aforementioned oil cylinder overlaps 11, in the right-hand member of oil cylinder left end cap 12 probes into (i.e. insert) aforesaid left cylinder cavity 23 and be provided with left end cap cylinder liner packing ring 124 on the right-hand member outer wall of this oil cylinder left end cap 12, this left end cap cylinder liner packing ring 124 coordinates with the inner wall sealing of left cylinder cavity 23.
Please continue to refer to Fig. 1, the left end aforementioned right cylinder cavity of insertion 24 of aforementioned oil cylinder right end cap 13 is interior and is provided with a pair right end cap sealing ring 133 on the outer wall of the left end of this oil cylinder right end cap 13, and the inner wall sealing of right end cap sealing ring 133 with right cylinder cavity 24 is coordinated by this.
The left end end face of aforementioned big piston rod 2 is constituted and has a connection screw rod head 26, the right-hand member of aforementioned mould bases union joint 4 is with to be connected screw rod head 26 threaded, and the left end of mould bases union joint 4 constitutes and has a union joint pin shaft hole 41 and be provided with a lining 411 in this union joint pin shaft hole 41, mould bases union joint 4 is articulated and connected by the right side of the union joint bearing pin 412 that is placed in union joint pin shaft hole 41 with aforementioned right mould bases 74.Self-evident, on the right side of right mould bases 74 and be welded with a pair union joint axis pin base (not shown) in the position corresponding to mould bases union joint 4, a union joint axis pin base pin-and-hole is offered on a pair union joint axis pin base and in corresponding position, the left end of aforesaid mould bases union joint 4 corresponds between a pair union joint axis pin base and aforesaid union joint bearing pin 412 inserts in the union joint axis pin base pin-and-hole on a pair union joint axis pin base, so that mould bases union joint 4 is articulated and connected with a pair union joint axis pin base.
Right-hand member at aforementioned big piston rod 2 and the position on the right side corresponding to aforementioned piston 22 are fixed with a piston end cap 27 by piston end cap screw 271, the inwall of this piston end cap 27 is provided with pair of pistons end cap seal circle 272, piston end cap sealing ring 272 is coordinated by this with the right-hand member outer wall sealing of aforementioned small piston rod 3, and also screwing one on piston end cap 27 and limit nut 273 for the piston limiting the right side of aforementioned piston 22, this piston limits the right flank patch of nut 273 and piston 22 and touches.
Right-hand member at aforementioned big piston rod 2 and the position in the left side corresponding to aforementioned piston 22 are constituted has a piston to limit step 28, the left surface of piston 22 and this piston limit step 28 patch and touch, it is provided with pair of pistons inner seal ring 29 on big piston rod 2 and in the position of the inwall corresponding to piston 22, the inner wall sealing of piston inner seal ring 29 with piston 22 is coordinated by this, and on the outer wall of piston 22, it is provided with a piston ring 221 and pair of pistons exterior seal ring 222, piston ring 221 is between pair of pistons exterior seal ring 222, and pair of pistons exterior seal ring 222 coordinates with the right-hand member inner wall sealing of aforementioned oil cylinder set 11.Limit between step 28 and piston restriction nut 273 it follows that aforesaid piston 22 is limited at piston.
A small piston rod resigning hole 134 is offered in the middle position of aforementioned oil cylinder right end cap 13, the right-hand member of aforementioned small piston rod 3 matches with this small piston rod resigning hole 134, and on the outer wall of the right-hand member of this small piston rod 3, it is provided with a pair small piston rod sealing ring 33, small piston rod sealing ring 33 is coordinated by this with the hole wall sealing of small piston rod resigning hole 134, is equipped with a small piston rod lock nut 34 at the position on the right side that small piston rod 3 is stretched over aforementioned oil cylinder right end cap 13.
nullRefer to Fig. 3 and combine Fig. 1 and Fig. 2，Aforesaid controlling organization 5 includes oil pump 51、Fuel tank 52、First control valve 53、Second control valve 54、Valve seat 55、First check valve 56 and the second check valve 57，Oil pump 51 matches with fuel tank 52，And oil pump 51 is connected with the first control valve 53 by oil pump the first oil circuit 511 and is connected with the second control valve 54 by oil pump the second oil circuit 512，Fuel tank 52 is arranged in aforementioned frame 7 together with oil pump 51，This fuel tank 52 is connected with the first control valve 53 by fuel tank the first oil circuit 521 and is connected with the second control valve 54 by fuel tank the second oil circuit 522，First control valve 53 and the second control valve 54 are arranged on valve seat 55，And the first control valve 53 is connected with aforesaid oil cylinder right end cap oil connection 131 by the first control valve pipeline 531，And the second control valve 54 is connected with aforementioned oil cylinder left end cap oil connection 121 by control valve the first oil inlet and oil return pipeline 541 and is connected with aforesaid small piston rod oil duct oil inlet and oil return interface 32 by control valve the second oil inlet and oil return pipeline 542，Valve seat 55 is fixed in aforementioned frame 7 in the position on the right side corresponding to aforementioned oil cylinder right end cap 13，First check valve 56 is arranged on the first control valve pipeline 531，Second control valve 57 is arranged on control valve the second oil inlet and oil return pipeline 542，Aforesaid oil tank 6 is connected with aforesaid valve seat 55 by oil tank pipeline 61 and is communicated with the aforementioned quick spill port of oil cylinder right end cap 132 by valve seat 55，Oil tank pipeline 61 is provided with an oil tank check valve 611，It is provided with one first oil circuit control 571 between aforementioned second check valve 57 and aforementioned control valve the first oil inlet and oil return pipeline 541，And it is provided with one second oil circuit control 6111 between aforementioned oil tank check valve 611 and the first oil inlet and oil return pipeline 541.
As shown in Figure 1, aforesaid valve seat 55 offers a valve seat oil-in 551 and is equipped with a pair valve seat oil pipe 552, aforementioned oil tank pipeline 61 connects with valve seat oil-in 551, and valve seat oil-in 551 communicates with a pair valve seat oil pipe 552, a pair valve seat oil pipe is connected with aforesaid oil cylinder right end cap quick oil feeding hole 132 and communicates with oil cylinder right end cap quick oil feeding hole 132.As preferred scheme, one flush connection communicated with the oil tank chamber of oil tank is set on the top of aforesaid oil tank 6, fuel tank 52 arranges an oil return interface communicated with fuel tank chamber, a backflow oil pipe is set between this oil return interface and aforesaid flush connection.
nullWork as a left side、Right mould bases 73、During 74 matched moulds，Oil pump 51 works (i.e. pump oil)，Hydraulic oil (i.e. fluid) is successively through oil pump the second oil circuit 512、Second control valve 54、Control valve the second oil inlet and oil return pipeline 542、Second check valve 57、Small piston rod oil duct oil inlet and oil return interface 32 and small piston rod oil duct 31 enter oil pocket 25 in big piston rod，Forced big piston rod 2 to left dislocation by the hydraulic fluid pressure in oil pocket 25 in big piston rod，Right mould bases 74 is driven to follow a pair right mould bases guide rail 72 to left dislocation through mould bases union joint 4，Cylinder rack 76 follows a pair cylinder rack guide rail 75 displacement to the right simultaneously，Owing to left mould frame 73 is linked with cylinder rack 76 by a pair upper connecting rod 77 and a pair lower link 78，Thus while cylinder rack 76 displacement to the right, drive left mould frame 73 displacement to the right，It is eventually exhibited as a left side、Right mould bases 73、74 displacements in opposite directions，I.e. towards the direction displacement that mutual matched moulds or title close up.Meanwhile, i.e. at big piston rod 2 while left dislocation, fluid in left cylinder cavity 23 is drawn from oil cylinder left end cap oil connection 121, and successively through control valve the first oil inlet and oil return pipeline 541, second control valve 54 and fuel tank the second oil pipe cause fuel tank 52 522 times, the most meanwhile, due at big piston rod 2 during left dislocation, right cylinder cavity 24 has been in negative pressure state, simultaneously the fluid in oil tank 6 successively through oil tank check valve 611(owing to being that negative pressure is opened), oil tank pipeline 61 valve seat oil-in 551, valve seat oil pipe 552 and oil cylinder right end cap quick oil feeding hole 132(a pair) add in right cylinder cavity 24.In this process, in only needing minimal amount of fluid to enter piston rod, oil pocket 25 just can promote big piston rod 2, and oil pump 51 energy-conservation is significant and accelerates closure pressing speed.
When the left and right half module on left and right mould bases 73,74 tends to closing up and implements locked mode, oil pump 51 pump oil, hydraulic oil introduces in right cylinder cavity 24 through oil pump the first oil circuit the 511, first control valve the 53, first control valve pipeline the 531, first check valve 56 and oil cylinder right end cap oil connection 131 successively, promotes big piston rod 2 and then left lateral with big pressure.Making big piston rod 2 play preferable locked mode effect, because at oil cylinder right end cap oil connection 131 while right cylinder cavity 24 introduces hydraulic oil, oil pump 51 is in and continues the confession oil condition of oil pocket 25 in big piston rod.Due to the oil return during locked mode as previously described, thus repeat no more.
nullWhen wanting die sinking，Come from the hydraulic oil of oil pump 51 successively through oil pump the second oil circuit 512、Second control valve 54、Control valve the first oil inlet and oil return pipeline 541、Oil cylinder left end cap oil connection 121 and left cylinder cavity 23，Big piston rod 2 is promoted to move to right，Hydraulic oil in control valve the first oil inlet and oil return pipeline 541 opens the second check valve 57 and oil tank check valve 611 respectively through the first oil circuit control 571 and the second oil circuit control 611 simultaneously，The oil made in big piston rod in oil pocket 25 is successively through small piston rod oil duct 31、Small piston rod oil duct oil inlet and oil return interface 32、Second check valve 57、Control valve the second oil inlet and oil return pipeline 542、Second control valve 54 and fuel tank the second oil circuit 522 back into fuel tank 52，And the oil in right cylinder cavity 24 is successively through oil cylinder right end cap quick oil feeding hole 132、Valve seat oil pipe 552、Oil tank pipeline 61 and oil tank check valve 611 back into oil tank 6，Thus realize the quick displacement to the right of big piston rod 2，Make a left side、Right mould bases 73、74 quickly scold out.
In sum, the technical scheme that the present invention provides overcomes the deficiency in prior art, has favorably accomplished invention task, has cashed the technique effect described in applicant's superincumbent technique effect hurdle objectively.
Claims (10)
- null1. the rapid mould opening-closing cylinder structure of a plastic product molding machine，Described plastic hollow formation machine includes a frame (7)，This frame (7) includes a pair left mould frame guide rail (71) the most corresponding each other、The right mould bases guide rail (72) corresponded to each other equally for a pair、The left mould frame (73) being movably arranged on a pair left mould frame guide rail (71)、Corresponding to the right side of left mould frame (73) and be movably arranged at the right mould bases (74) on a pair right mould bases guide rail (72)、That arrange corresponding to the right side of a pair right mould bases guide rail (72) and the most each other before and after corresponding a pair cylinder rack guide rail (75)、Corresponding to the right side of right mould bases (74) and the cylinder rack (76) that is movably arranged on a pair cylinder rack guide rail (75)、Be attached between left mould frame (73) and the top of cylinder rack (76) and each other before and after the most corresponding a pair upper connecting rod (77) and be attached between left mould frame (73) and the bottom of cylinder rack (76) and mutual the most corresponding a pair lower link (78)；Described rapid mould opening-closing cylinder structure includes an oil cylinder (1), this oil cylinder (1) includes an oil cylinder set (11), an oil cylinder left end cap (12) and an oil cylinder right end cap (13), oil cylinder set (11) with the horizontally-arranged state support of level in described cylinder rack (76), oil cylinder left end cap (12) Seal with the left end of oil cylinder set (11) and coordinate, oil cylinder right end cap (13) seals with the right-hand member of oil cylinder set (11) and coordinates, upper at oil cylinder left end cap (12) and be positioned at the sidepiece of oil cylinder left end cap (12) and be fixed with oil cylinder left end cap oil connection (121), upper at oil cylinder right end cap (13) and be positioned at the sidepiece of oil cylinder right end cap (13) and be fixed with oil cylinder right end cap oil connection (131), and just side to oil cylinder left end cap (12) offers oil cylinder right end cap quick oil feeding hole (132) at oil cylinder right end cap (13)；nullOne big piston rod (2) and a small piston rod (3)，In the central authorities of big piston rod (2) and be positioned at the length direction of big piston rod (2) and offer a small piston rod and accommodate chamber (21)，This small piston rod accommodates the right-hand member in chamber (21) and does not closes，The left end of big piston rod (2) is slidably matched with described oil cylinder left end cap (12) and is connected behind the left side being stretched over oil cylinder left end cap (12) and has a mould bases union joint (4)，This mould bases union joint (4) is connected with the right-hand member of described right mould bases (74)，Right-hand member at big piston rod (2) is provided with a piston (22)，Space between left surface and the described oil cylinder left end cap (12) of this piston (22) is configured to left cylinder cavity (23)，And the space between the right flank of piston (22) and described oil cylinder right end cap (13) is configured to right cylinder cavity (24)，Described left end cap oil connection (121) communicates with left cylinder cavity (23)，And described right end cap oil connection (131) and oil cylinder right end cap quick oil feeding hole (132) communicate with right cylinder cavity (24)，The left end of small piston rod (3) is placed in described small piston rod and accommodates in chamber (21)，And the right-hand member of small piston rod (3) leans out small piston rod and accommodates the right-hand member in chamber (21) and be limited on oil cylinder right end cap (13) in the middle position corresponding to described oil cylinder right end cap (13)，A small piston rod oil duct (31) is offered in the middle position of the length direction of this small piston rod (3)，This small piston rod oil duct (31) is through to right-hand member from the left end of small piston rod (3)，Small piston rod oil duct oil inlet and oil return interface (32) it is provided with in the position of the right-hand member port corresponding to small piston rod oil duct (31)，The space that the left end end face of small piston rod (3) and small piston rod accommodate between small piston rod receiving chamber diapire (211) in chamber (21) is configured to oil pocket (25) in big piston rod；One controlling organization (5) , this controlling organization (5) is arranged on described frame (7) and above and is connected with described oil cylinder left end cap oil connection (121), oil cylinder right end cap oil connection (131), oil cylinder right end cap quick oil feeding hole (132) and small piston rod oil duct oil inlet and oil return interface (32) hydraulic oil pipe pipeline；nullCharacterized by further comprising an oil tank (6)，This oil tank (6) is arranged on the top of described frame (7) and controls to be connected with described controlling organization (5) in the position on the right side corresponding to described cylinder rack (76)，The outer wall of left end being placed in the described small piston rod (3) in described small piston rod receiving chamber (21) is slidably matched with the cavity wall of small piston rod receiving chamber (21)，When by described small piston rod oil duct (31) hydraulic oil to be introduced oil pocket (25) in described big piston rod by described small piston rod oil inlet and oil return interface (32)，Described big piston rod (2) drives described right mould bases (74) to left dislocation to left dislocation and by big piston rod (2)，Left mould frame (73) described in Tong Shi and cylinder rack (76) displacement to the right，Left、Right mould bases (73、74) the matched moulds kinestate of displacement toward each other it is in，Fluid in the most described left cylinder cavity (23) leads to described controlling organization (5) from described oil cylinder left end cap oil connection (121)，Described oil cylinder right end cap quick oil feeding hole (132) introduces fluid to right cylinder cavity (24)，And when a left side、Right mould bases (73、74) when tending to closing up each other and implementing locked mode，Oil cylinder right end cap oil connection (131) is by the right cylinder cavity (24) described in hydraulic oil introducing，And described small piston rod oil duct oil inlet and oil return interface (32) is continued to be held in oil pocket (25) in described big piston rod and is introduced the state of hydraulic oil.
- The rapid mould opening-closing cylinder structure of plastic product molding machine the most according to claim 1, it is characterized in that being fixed with oil cylinder set mounting flange (111) at the middle part and being positioned on the outer wall of oil cylinder set (11) of the length direction of described oil cylinder set (11), this oil cylinder set mounting flange (111) is fixed with described cylinder rack (76) by oil cylinder set mounting flange screw (1111).
- nullThe rapid mould opening-closing cylinder structure of plastic product molding machine the most according to claim 1，It is characterized in that offering a pair left end cap seal groove (122) on the left end inwall of described oil cylinder left end cap (12)，The left sealing ring of a left end cap (1221) respectively it is embedded with in this is to left end cap seal groove (122)，Left end outer wall sealing ring left with left end cap (1221) of described big piston rod (2) seals and coordinates，And the left end end face that screw (123) and described oil cylinder set (11) are fixed by left end cap in the middle part of oil cylinder left end cap (12) is fixed，The right-hand member of oil cylinder left end cap (12) probes in described left cylinder cavity (23) and is provided with left end cap cylinder liner packing ring (124) on the right-hand member outer wall of this oil cylinder left end cap (12)，This left end cap cylinder liner packing ring (124) coordinates with the inner wall sealing of left cylinder cavity (23).
- The rapid mould opening-closing cylinder structure of plastic product molding machine the most according to claim 1, it is characterized in that the left end of described oil cylinder right end cap (13) insert described right cylinder cavity (24) in and on the outer wall of the left end of this oil cylinder right end cap (13), be provided with a pair right end cap sealing ring (133), the inner wall sealing of right end cap sealing ring (133) with right cylinder cavity (24) is coordinated by this.
- The rapid mould opening-closing cylinder structure of plastic product molding machine the most according to claim 1, it is characterized in that constituting on the left end end face of described big piston rod (2) have a connection screw rod head (26), the right-hand member of described mould bases union joint (4) is with to be connected screw rod head (26) threaded, and the left end composition of mould bases union joint (4) has a union joint pin shaft hole (41) and is provided with a lining (411) in this union joint pin shaft hole (41), mould bases union joint (4) is articulated and connected by the right side of the union joint bearing pin (412) that is placed in union joint pin shaft hole (41) with described right mould bases (74).
- The rapid mould opening-closing cylinder structure of plastic product molding machine the most according to claim 1, it is characterized in that the right-hand member described big piston rod (2) and the position on the right side corresponding to described piston (22) are fixed with a piston end cap (27) by piston end cap screw (271), the inwall of this piston end cap (27) is provided with pair of pistons end cap seal circle (272), piston end cap sealing ring (272) is coordinated by this with the right-hand member outer wall sealing of described small piston rod (3), and on piston end cap (27), also screw one limit nut (273) for the piston that the right side of described piston (22) is limited, it is tactile with the right flank patch of piston (22) that this piston limits nut (273).
- nullThe rapid mould opening-closing cylinder structure of plastic product molding machine the most according to claim 1，It is characterized in that the right-hand member described big piston rod (2) and the composition of the position in the left side corresponding to described piston (22) have a piston to limit step (28)，The left surface of piston (22) and this piston limit step (28) patch and touch，Above and the position of the inwall corresponding to piston (22) is provided with pair of pistons inner seal ring (29) at big piston rod (2)，The inner wall sealing of piston inner seal ring (29) with piston (22) is coordinated by this，And on the outer wall of piston (22), it is provided with a piston ring (221) and pair of pistons exterior seal ring (222)，Piston ring (221) is positioned between pair of pistons exterior seal ring (222)，And pair of pistons exterior seal ring (222) coordinates with the right-hand member inner wall sealing of described oil cylinder set (11).
- The rapid mould opening-closing cylinder structure of plastic product molding machine the most according to claim 1, it is characterized in that offering a small piston rod resigning hole (134) in the middle position of described oil cylinder right end cap (13), the right-hand member of described small piston rod (3) matches with this small piston rod resigning hole (134), and on the outer wall of the right-hand member of this small piston rod (3), it is provided with a pair small piston rod sealing ring (33), small piston rod sealing ring (33) is coordinated by this with the hole wall sealing of small piston rod resigning hole (134), it is equipped with a small piston rod lock nut (34) at the position on the right side that small piston rod (3) is stretched over described oil cylinder right end cap (13).
- nullThe rapid mould opening-closing cylinder structure of plastic product molding machine the most according to claim 1，It is characterized in that described controlling organization (5) includes oil pump (51)、Fuel tank (52)、First control valve (53)、Second control valve (54)、Valve seat (55)、First check valve (56) and the second check valve (57)，Oil pump (51) matches with fuel tank (52)，And oil pump (51) is connected with the first control valve (53) by oil pump the first oil circuit (511) and is connected with the second control valve (54) by oil pump the second oil circuit (512)，Fuel tank (52) is arranged in described frame (7) together with oil pump (51)，This fuel tank (52) is connected with the first control valve (53) by fuel tank the first oil circuit (521) and is connected with the second control valve (54) by fuel tank the second oil circuit (522)，First control valve (53) and the second control valve (54) are arranged on valve seat (55)，And the first control valve (53) is connected with described oil cylinder right end cap oil connection (131) by the first control valve pipeline (531)，And the second control valve (54) is connected with described oil cylinder left end cap oil connection (121) by control valve the first oil inlet and oil return pipeline (541) and is connected with described small piston rod oil duct oil inlet and oil return interface (32) by control valve the second oil inlet and oil return pipeline (542)，Valve seat (55) is fixed in described frame (7) in the position on the right side corresponding to described oil cylinder right end cap (13)，First check valve (56) is arranged on the first described control valve pipeline (531)，Second control valve (57) is arranged in described control valve the second oil inlet and oil return pipeline (542)，Described oil tank (6) is connected with described valve seat (55) by oil tank pipeline (61) and is communicated with the quick spill port of described oil cylinder right end cap (132) by valve seat (55)，Oil tank pipeline (61) is provided with an oil tank check valve (611)，One first oil circuit control (571) it is provided with between described second check valve (57) and described control valve the first oil inlet and oil return pipeline (541)，And between described oil tank check valve (611) and the first oil inlet and oil return pipeline (541), it is provided with one second oil circuit control (6111).
- The rapid mould opening-closing cylinder structure of plastic product molding machine the most according to claim 9, it is characterized in that on described valve seat (55), offering a valve seat oil-in (551) and being equipped with a pair valve seat oil pipe (552), described oil tank pipeline (61) connects with valve seat oil-in (551), and valve seat oil-in (551) communicates with a pair valve seat oil pipe (552), a pair valve seat oil pipe is connected with described oil cylinder right end cap quick oil feeding hole (132) and communicates with oil cylinder right end cap quick oil feeding hole (132).
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| Publication number | Publication date |
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| CN105909591B (en) | 2017-09-01 |
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