CN113175463A - Integrated hydraulic system and tire vulcanizer - Google Patents
Integrated hydraulic system and tire vulcanizer Download PDFInfo
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- CN113175463A CN113175463A CN202110480559.9A CN202110480559A CN113175463A CN 113175463 A CN113175463 A CN 113175463A CN 202110480559 A CN202110480559 A CN 202110480559A CN 113175463 A CN113175463 A CN 113175463A
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- 239000003921 oil Substances 0.000 claims abstract description 188
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 230000003068 static effect Effects 0.000 claims abstract description 20
- 238000004073 vulcanization Methods 0.000 description 10
- 230000009471 action Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009956 central mechanism Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Classifications
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/20—Opening, closing or clamping
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/20—Opening, closing or clamping
- B29C33/22—Opening, closing or clamping by rectilinear movement
- B29C33/24—Opening, closing or clamping by rectilinear movement using hydraulic or pneumatic means
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- 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
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2030/00—Pneumatic or solid tyres or parts thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
本发明涉及轮胎成型领域，公开一种集成式液压系统及轮胎硫化机。所述集成式液压系统包括液压泵源、控制阀块和执行机构，执行机构包括集成油缸和充液单元，集成油缸包括缸体、静活塞杆和动活塞杆，静活塞杆固定设置于缸体内，动活塞杆滑动设置于缸体内，并与静活塞杆滑动配合，动活塞杆与缸体之间设置有无杆腔和有杆腔，动活塞杆与静活塞杆之间设置有快进腔，充液单元用于向无杆腔中供给液压油，液压泵源通过控制阀块分别向有杆腔、无杆腔和快进腔中供给液压油。本发明结构紧凑，减少了占用空间，安装简便，提高了工作效率，管路连接点少，液压油的泄漏几率低，无需依靠油泵额外输出流量实现快速合模，降低了成本和能耗，减少了噪音。
The invention relates to the field of tire building, and discloses an integrated hydraulic system and a tire vulcanizing machine. The integrated hydraulic system includes a hydraulic pump source, a control valve block and an actuator, the actuator includes an integrated oil cylinder and a liquid filling unit, the integrated oil cylinder includes a cylinder block, a static piston rod and a movable piston rod, and the static piston rod is fixedly arranged on the cylinder block. Inside, the movable piston rod is slidably arranged in the cylinder body and is slidably matched with the static piston rod, a rod-less cavity and a rod-bearing cavity are arranged between the movable piston rod and the cylinder body, and a fast-moving piston rod is arranged between the movable piston rod and the static piston rod. Into the cavity, the liquid filling unit is used to supply hydraulic oil to the rodless cavity, and the hydraulic pump source supplies hydraulic oil to the rod cavity, the rodless cavity and the fast forward cavity respectively through the control valve block. The invention has compact structure, reduces occupied space, is easy to install, improves work efficiency, has fewer pipeline connection points, and lowers the leakage probability of hydraulic oil. noise.
Description
Technical Field
The invention relates to the field of tire molding, in particular to an integrated hydraulic system and a tire vulcanizer.
Background
The hydraulic vulcanizer is a device used in a vulcanization process in the tire production process, and is one of key devices for determining the quality of tires. In the existing hydraulic vulcanizing machine, actions such as die opening and closing, die force adding, lifting of a central mechanism, stretching of a segmented die, lifting of a tire loading mechanism and the like are realized in a hydraulic transmission mode, the reaction speed is high, the actions are reliable, the efficiency is high, stepless speed regulation can be realized, the performance is good, the operation cost of a user is greatly reduced, and the equipment utilization rate is improved.
The existing hydraulic vulcanizing machine has the following defects: the mold opening and closing oil cylinder and the pressurizing oil cylinder are two independent oil cylinders, so that the use cost is high, the occupied space is large, the installation is complicated, the number of pipeline connecting points is large, and the leakage points of hydraulic oil are increased; the mold opening and closing oil cylinder realizes that the mold closing is fast and the output flow of the pump is totally depended on, the discharge capacity of the pump is large, the power of a matched motor is also large, and the energy consumption and the cost are increased.
Disclosure of Invention
Based on the above problems, the present invention provides an integrated hydraulic system, which has a compact structure, few pipe joints, a low leakage probability of hydraulic oil, and reduced cost, energy consumption, and noise.
The invention also aims to provide a tire vulcanizer, which is provided with the integrated hydraulic system and can complete the steps of pressurization and pressure maintaining after the tire vulcanizer rapidly closes the mold and the step of pressure relief before the tire vulcanizer rapidly opens the mold after vulcanization is finished, thereby effectively ensuring the tire vulcanization quality.
In order to achieve the purpose, the invention adopts the following technical scheme:
an integrated hydraulic system comprises a hydraulic pump source, a control valve block and an execution mechanism, wherein the execution mechanism comprises an integrated oil cylinder and a liquid filling unit, the integrated oil cylinder comprises a cylinder body, a static piston rod and a movable piston rod, the static piston rod is fixedly arranged in the cylinder body, the movable piston rod is arranged in the cylinder body in a sliding mode and is in sliding fit with the static piston rod, a rodless cavity and a rod cavity are arranged between the movable piston rod and the cylinder body, a fast forward cavity is arranged between the movable piston rod and the static piston rod, the liquid filling unit is used for supplying hydraulic oil to the rodless cavity, and the hydraulic pump source supplies hydraulic oil to the rod cavity, the rodless cavity and the fast forward cavity through the control valve block.
As a preferable aspect of the integrated hydraulic system of the present invention, the hydraulic pump source includes an oil tank and a low-pressure oil pump, the control valve block includes a third electromagnetic ball valve, a second directional control valve, a first one-way throttle valve, a second balance valve and a first balance valve, and hydraulic oil in the oil tank flows into the fast-forward chamber through the low-pressure oil pump, the third electromagnetic ball valve, the second directional control valve, the first one-way throttle valve, the second balance valve and the first balance valve in sequence to push the movable piston rod to an extended position.
As a preferable scheme of the integrated hydraulic system of the present invention, the liquid filling unit includes a liquid filling valve and a high-level oil tank, when the movable piston rod extends out, the liquid filling valve is opened by negative pressure of the rodless cavity, and hydraulic oil of the high-level oil tank flows into the rodless cavity through the liquid filling valve to push the movable piston rod.
As a preferable mode of the integrated hydraulic system of the present invention, the control valve block further includes a second one-way throttle valve, and when the movable piston rod extends, the hydraulic oil in the rod chamber flows into the oil tank through the second balance valve, the second one-way throttle valve, and the second direction changing valve in sequence.
As a preferable scheme of the integrated hydraulic system of the present invention, the control valve block further includes a second electromagnetic ball valve, and the hydraulic oil in the oil tank flows into the rodless cavity sequentially through the low-pressure oil pump and the second electromagnetic ball valve.
As a preferable scheme of the integrated hydraulic system of the present invention, the hydraulic pump source further includes a high-pressure oil pump, the control valve block further includes a first direction valve and a first electromagnetic ball valve, and hydraulic oil of the oil tank flows into the rodless cavity sequentially through the high-pressure oil pump, the first direction valve and the first electromagnetic ball valve to pressurize the movable piston rod.
As a preferable scheme of the integrated hydraulic system of the present invention, the control valve block further includes a fourth electromagnetic ball valve, and the hydraulic oil in the rodless cavity flows into the oil tank through the fourth electromagnetic ball valve to release the pressure of the movable piston rod.
As a preferable aspect of the integrated hydraulic system of the present invention, the hydraulic oil in the oil tank flows into the rod chamber through the low-pressure oil pump, the third electromagnetic ball valve, the second directional valve, the second one-way throttle valve, and the second balance valve in sequence, so as to push the movable piston rod to a retracted position.
As a preferable scheme of the integrated hydraulic system of the present invention, hydraulic oil in the oil tank flows into the charge valve through the low-pressure oil pump, the third electromagnetic ball valve, the second directional valve, and the second one-way throttle valve in sequence to open the charge valve, and hydraulic oil in the rodless cavity flows into the high-level oil tank through the charge valve.
A tyre vulcanizer comprising an integrated hydraulic system as described above.
The invention has the beneficial effects that:
according to the integrated hydraulic system provided by the invention, a hydraulic pump source supplies hydraulic oil to a fast-forward cavity between a movable piston rod and a static piston rod of an integrated oil cylinder through a control valve block, the hydraulic oil pushes the movable piston rod to move fast relative to the static piston rod, meanwhile, hydraulic oil is quickly supplied to a rodless cavity between the movable piston rod and a cylinder body through a liquid filling unit, the movement of the movable piston rod is accelerated, and a fast die closing function is realized. The integrated hydraulic system provided by the invention has the advantages of compact structure, reduced occupied space, simplicity and convenience in installation, improvement on working efficiency, few pipeline connection points, low leakage probability of hydraulic oil, realization of quick die assembly without depending on extra output flow of an oil pump, reduction in cost and energy consumption and reduction in noise.
The tire vulcanizer provided by the invention comprises the integrated hydraulic system, and can complete the steps of pressurization and pressure maintaining after the tire vulcanizer rapidly closes the mold, and complete the step of pressure relief before the tire vulcanizer rapidly opens the mold after vulcanization is finished, thereby effectively ensuring the tire vulcanization quality.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic diagram of an integrated hydraulic system provided by an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an integrated cylinder (when a movable piston rod is retracted) in the integrated hydraulic system according to the embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an integrated cylinder (with a movable piston rod extended) in an integrated hydraulic system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a tire press including an integrated hydraulic system according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a tire press including an integrated hydraulic system (with the movable piston rod in a retracted position) according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a tire press including an integrated hydraulic system with a movable piston rod in an extended position according to an embodiment of the present invention.
In the figure:
101-a fuel tank; 102-a low pressure oil pump; 103-a high-pressure oil pump; 104-a liquid level meter; 105-a first oil suction filter; 106-a second oil absorption filter; 107-return oil filter; 108-a temperature controller; 109-liquid level signaling device; 110-an air filter; 111-a magnet; 112-a first motor; 113-a first coupling; 114-a second electric machine; 115-a second coupling;
201-a third electromagnetic ball valve; 202-a second reversing valve; 203-a first one-way throttle valve; 204-a second counter-balance valve; 205-a first counter-balance valve; 206-a second one-way throttle valve; 207-a second electromagnetic ball valve; 208-a first directional valve; 209-a first electromagnetic ball valve; 210-a fourth electromagnetic ball valve; 211-a first electromagnetic spill valve; 212-a second electromagnetic spill valve; 213-safety valve; 214-a first pressure gauge; 215-a second pressure gauge; 216-a first one-way valve; 217-a second one-way valve; 218-a first throttle valve; 219-a second throttle valve; 220-pressure
A sensor;
31-an integrated oil cylinder; 32-a liquid-filled unit;
311-cylinder body; 312-a stationary piston rod; 313-a movable piston rod; 314-rodless cavity; 315-lumen with stem; 316-fast forward cavity;
321-a liquid filling valve; 322-high-level tank;
400-upper die; 500-lower mould; 600-frame.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 3, the present embodiment provides an integrated hydraulic system including a hydraulic pump source, a control valve block, and an actuator. The actuating mechanism comprises an integrated oil cylinder 31 and a liquid charging unit 32, wherein the integrated oil cylinder 31 comprises a cylinder body 311, a static piston rod 312 and a movable piston rod 313. The static piston rod 312 is fixedly arranged in the cylinder 311, and the movable piston rod 313 is slidably arranged in the cylinder 311 and is in sliding fit with the static piston rod 312. A rodless chamber 314 and a rod chamber 315 are provided between the movable piston rod 313 and the cylinder 311, and a fast-forward chamber 316 is provided between the movable piston rod 313 and the stationary piston rod 312. The liquid-filling unit 32 is used to supply hydraulic oil to the rodless chamber 314, and the hydraulic pump source supplies hydraulic oil to the rod chamber 315, the rodless chamber 314, and the fast-forward chamber 316, respectively, through the control valve block.
The hydraulic pump source supplies hydraulic oil to the fast forward chamber 316 between the movable piston rod 313 and the static piston rod 312 of the integrated cylinder 31 through the control valve block, and the hydraulic oil pushes the movable piston rod 313 to move fast relative to the static piston rod 312. Meanwhile, hydraulic oil is rapidly supplied to the rodless cavity 314 between the movable piston rod 313 and the cylinder body 311 through the liquid filling unit 32, so that the movement of the movable piston rod 313 is accelerated, and the rapid die closing function is realized. The hydraulic pump source supplies high pressure hydraulic oil to the rodless chamber 314 through the control valve block to achieve a pressurizing function. The hydraulic pump source supplies hydraulic oil to the rod chamber 315 through the control valve block, thereby achieving a pressure relief function.
Alternatively, the hydraulic pump source includes a tank 101 and a low-pressure oil pump 102, the control valve block includes a third electromagnetic ball valve 201, a second direction changing valve 202, a first one-way throttle valve 203, a second balance valve 204 and a first balance valve 205, and hydraulic oil of the tank 101 flows into the fast-forward chamber 316 via the low-pressure oil pump 102, the third electromagnetic ball valve 201, the second direction changing valve 202, the first one-way throttle valve 203, the second balance valve 204 and the first balance valve 205 in this order to push the piston rod 313 to the extended position. In this embodiment, the hydraulic pump source further includes a first electric motor 112 and a first coupling 113, and the first electric motor 112 is connected to the low-pressure oil pump 102 through the first coupling 113. The control valve block further includes a second electromagnetic spill valve 212 and a second check valve 217 which are disposed in this order downstream of low-pressure oil pump 102.
When the mold is closed quickly, the first motor 112 is started, the electromagnet 111 of the second electromagnetic relief valve 212 gives an electric signal, the AL port of the low-pressure oil pump 102 outputs low-pressure oil, and the low-pressure oil is input from the BL port of the second check valve 217 and output from the CL port of the second check valve 217. Meanwhile, the end a electromagnet 111 of the third electromagnetic ball valve 201 and the end b electromagnet 111 of the second reversing valve 202 simultaneously supply electric signals, and the low-pressure oil enters the port DL of the third electromagnetic ball valve 201 from the port CL of the second check valve 217, then enters the port FL of the second reversing valve 202 from the port HL of the third electromagnetic ball valve 201, then enters the port QL of the first check throttle valve 203 from the port FB of the second reversing valve 202, is output from the port HL of the first check throttle valve 203, and opens the second balance valve 204 through the port KZ of the second balance valve 204. Low-pressure oil is input from the first balance valve 205, is output from a KL port of the first balance valve 205, enters the fast-forward cavity 316 through a YK port of the static piston rod 312, and is pushed by the low-pressure oil to move the piston rod 313 down rapidly, so that rapid die assembly is realized.
Optionally, the liquid filling unit 32 includes a liquid filling valve 321 and a high-level oil tank 322, when the movable piston rod 313 extends, the negative pressure of the rodless cavity 314 opens the liquid filling valve 321, and the hydraulic oil of the high-level oil tank 322 flows into the rodless cavity 314 through the liquid filling valve 321 to push the movable piston rod 313. In the descending process of the movable piston rod 313, negative pressure is generated in the rodless cavity 314, the liquid filling valve 321 is opened under the action of the negative pressure, oil in the high-level oil tank 322 is sucked into the rodless cavity 314, quick liquid filling is realized, quick die assembly is realized without depending on extra output flow of an oil pump, the cost and the energy consumption are reduced, and the noise is reduced.
Optionally, the control valve block further comprises a second one-way throttle 206, and when the movable piston rod 313 extends, the hydraulic oil in the rod chamber 315 flows into the oil tank 101 through the second balance valve 204, the second one-way throttle 206 and the second direction changing valve 202 in sequence. In the present embodiment, the hydraulic pump source further includes a return oil filter 107, and the return oil filter 107 is provided between the second direction valve 202 and the oil tank 101.
During mold closing, the hydraulic fluid in the rod chamber 315 is output through the YH port, input through the JL port of the second balancing valve 204, output from the IL port of the second balancing valve 204, input through the HL port of the second check throttle 206, output through the GL port of the second check throttle 206, input through the FA port of the second selector valve 202, output through the FT port of the second selector valve 202, input through the T2 port of the return oil filter 107, and output through the T1 port of the return oil filter 107 into the oil tank 101. The first balance valve 205 and the second balance valve 204 can make the piston rod 313 keep the speed smooth and without impact during the operation.
Optionally, the control valve block further comprises a second electromagnetic ball valve 207, and the hydraulic oil in the oil tank 101 flows into the rodless cavity 314 through the low-pressure oil pump 102 and the second electromagnetic ball valve 207 in sequence. In this embodiment, the control valve block further comprises a first throttle valve 218 and a pressure sensor 220, the first throttle valve 218 is arranged in parallel with the third electromagnetic ball valve 201, and the pressure sensor 220 is used for monitoring the oil pressure of the rodless cavity 314 in real time.
When the movable piston rod 313 approaches the stroke end quickly, the mold closing is changed from quick to slow, and the liquid filling valve 321 is closed under the action of a return spring. When the electromagnet 111 at the end a of the third electromagnetic ball valve 201 is powered off and loses an electric signal, low-pressure oil passes through the first throttle valve 218 to limit the flow rate of the low-pressure oil, meanwhile, an electric signal is input to the end a of the second electromagnetic ball valve 207, the low-pressure oil is output from the port CL of the second one-way valve 217, is input from the port EP of the second electromagnetic ball valve 207, is output from the port EO of the second electromagnetic ball valve 207, enters the rodless cavity 314 through the port YG, and the movable piston rod 313 slowly reaches the stroke end point to complete mold closing.
At this time, the oil liquid continuously enters the rodless cavity 314 through the YG port, the movable piston rod 313 starts to be pre-pressurized, and under the monitoring of the pressure sensor 220, after the rodless cavity 314 reaches the set pressure, the low-pressure oil pump 102 is closed, the second reversing valve 202 and the second electromagnetic ball valve 207 lose the electric signals, and the valve core returns to the original position.
Optionally, the hydraulic pump source further includes a high-pressure oil pump 103, the control valve block further includes a first direction valve 208 and a first electromagnetic ball valve 209, and the hydraulic oil in the oil tank 101 flows into the rodless cavity 314 via the high-pressure oil pump 103, the first direction valve 208 and the first electromagnetic ball valve 209 in sequence to pressurize the movable piston rod 313. In the present embodiment, the hydraulic pump source further includes a second electric motor 114 and a second coupling 115, and the second electric motor 114 is connected to the high-pressure oil pump 103 through the second coupling 115. The control valve block further comprises a first electromagnetic overflow valve 211, a first check valve 216 and a safety valve 213, the first electromagnetic overflow valve 211 is arranged between the high-pressure oil pump 103 and the first reversing valve 208, the first check valve 216 is arranged at the downstream of the first reversing valve 208, one end of the safety valve 213 is arranged between the second electromagnetic ball valve 207 and the rodless cavity 314, the other end of the safety valve 213 is connected with the oil tank 101, and the safety valve 213 provides a safety protection function for the system.
At this time, the second motor 114 is started, the electromagnet 111 of the first electromagnetic relief valve 211 gives an electric signal, the AH port of the high-pressure oil pump 103 outputs high-pressure oil, the a port of the first directional valve 208 inputs an electric signal, the high-pressure oil is input from the PR port of the first directional valve 208 and is output from the BR port of the first directional valve 208, and the high-pressure oil is input from the BH port of the first check valve 216 and is output from the CH port of the first check valve 216. Meanwhile, an electric signal is input to the a-port of the first electromagnetic ball valve 209, and high-pressure oil is input from the DH port of the first electromagnetic ball valve 209, output from the EH port of the first electromagnetic ball valve 209, and enters the rodless chamber 314 through the YG port to be pressurized. When the pressure sensor 220 detects that the pressure in the rodless cavity 314 reaches a set value, the end a of the first electromagnetic ball valve 209 loses the electric signal, the valve core is closed, and the pressure applied to the movable piston rod 313 is kept, so that pressure maintaining is performed. At the same time, the second electric motor 114 stops acting, and the a end of the first reversing valve 208 loses the electric signal and returns to the original position.
Optionally, the control valve block further comprises a fourth electromagnetic ball valve 210, and the hydraulic oil in the rodless cavity 314 flows into the oil tank 101 through the fourth electromagnetic ball valve 210 to discharge the movable piston rod 313. After the tire vulcanization is completed, the pressure needs to be relieved firstly and then the mold is opened, an electric signal is input into the end a of the fourth electromagnetic ball valve 210, and high-pressure oil in the rodless cavity 314 enters the EJ port of the fourth electromagnetic ball valve 210 through the YG port and then is output to the oil tank 101 through the EI port of the fourth electromagnetic ball valve 210. When the pressure sensor 220 detects that the pressure in the rodless cavity 314 is zero, the fourth electromagnetic ball valve 210 loses the electric signal, and the pressure relief is completed.
Alternatively, the hydraulic oil of the oil tank 101 flows into the rod chamber 315 via the low-pressure oil pump 102, the third electromagnetic ball valve 201, the second direction changing valve 202, the second one-way throttle valve 206, and the second counter valve 204 in this order to push the movable piston rod 313 to the contracted position. When the mold is opened, the first motor 112 is started, the electromagnet 111 of the second electromagnetic relief valve 212 gives an electric signal, the AL port of the low-pressure oil pump 102 outputs low-pressure oil, and the low-pressure oil is input from the BL port of the second check valve 217 and output from the CL port of the second check valve 217. Meanwhile, the a-end electromagnet 111 of the third electromagnetic ball valve 201 and the a-end electromagnet 111 of the second reversing valve 202 simultaneously supply electric signals, low-pressure oil enters the DL port of the third electromagnetic ball valve 201 from the CL port of the second check valve 217, then enters the FL port of the second reversing valve 202 from the HL port of the third electromagnetic ball valve 201, then enters the GL port of the second check throttle valve 206 from the FA port of the second reversing valve 202, meanwhile, the low-pressure oil passes through the KX port of the liquid filling valve 321 to open the liquid filling valve 321, the low-pressure oil enters the IL port of the second balance valve 204 from the HL port of the second check throttle valve 206 to be input, and meanwhile, the low-pressure oil opens the first balance valve 205 through the FY port of the first balance valve 205. The low-pressure oil is output from the JL port of the second balance valve 204 and enters the rod chamber 315 from the YH port, and the piston rod 313 is driven to retract under the pushing of the low-pressure oil, so that the quick die opening is realized.
Alternatively, the hydraulic oil in the oil tank 101 flows into the charging valve 321 through the low-pressure oil pump 102, the third electromagnetic ball valve 201, the second direction changing valve 202 and the second one-way throttle valve 206 in sequence to open the charging valve 321, and the hydraulic oil in the rodless chamber 314 flows into the high-level oil tank 322 through the charging valve 321. The oil in the rodless chamber 314 is output through an YL port, input from a ZL port of the charge valve 321, and output from an XL port of the charge valve 321 into the high-level oil tank 322, at which time a cycle ends. When the oil in the high-level oil tank 322 is too much, the oil will flow back to the oil tank 101 from the YL port of the high-level oil tank 322, so as to avoid the influence on the tire quality caused by the overflow of the hydraulic oil from the high-level oil tank 322.
In this embodiment, the control valve block further includes a first pressure gauge 214, a second pressure gauge 215 and a second throttle 219, the first pressure gauge 214 is used for detecting the downstream line pressure of the high-pressure oil pump 103, the second pressure gauge 215 is used for detecting the downstream line pressure of the low-pressure oil pump 102, and the second throttle 219 is disposed upstream of the fourth electromagnetic ball valve 210.
The hydraulic pump source further comprises a level gauge 104, the level gauge 104 being adapted to detect the level of oil in the oil tank 101. Install air cleaner 110 on the oil tank 101 for when oil liquid reduces in the oil tank 101, air admission oil tank 101 in, filter the impurity in the air, avoid aggravating integrated hydro-cylinder 31's wearing and tearing, guarantee integrated hydro-cylinder 31's life. The oil tank 101 is also provided with a liquid level signaling device 109, the loss of hydraulic oil can be caused in the running process of the equipment to reduce the oil, the liquid level signaling device 109 detects the reduction of the liquid level, and the alarm and shutdown can be realized in time, so that the low-pressure oil pump 102 and the high-pressure oil pump 103 are prevented from being damaged due to air suction.
Because the temperature of the vulcanization workshop is higher, the temperature controller 108 is arranged in the oil tank 101, and the shutdown alarm can be detected in time under the condition that the oil temperature rises, so that the accelerated aging and damage of hydraulic components due to high temperature are protected. The first oil suction filter 105, the second oil suction filter 106 and the oil return filter 107 on the oil tank 101 can protect the low-pressure oil pump 102 and the high-pressure oil pump 103 from damaging parts due to impurities in the sucked oil. The oil tank 101 is also provided with a magnet 111, and the magnet 111 can attract scrap iron and iron powder brought back in return oil of the system so as to avoid being sucked into the oil pump.
The working process of the integrated hydraulic system provided by the embodiment comprises seven steps: and (3) fast die assembly, fast-speed die assembly, pre-pressurizing, pressure maintaining, pressure releasing and die opening.
As shown in fig. 1, during rapid mold closing, the first motor 112 is activated, the electromagnet 111 of the second electromagnetic relief valve 212 gives an electric signal, the AL port of the low-pressure oil pump 102 outputs low-pressure oil, and the low-pressure oil is input from the BL port of the second check valve 217 and output from the CL port of the second check valve 217. Meanwhile, the end a electromagnet 111 of the third electromagnetic ball valve 201 and the end b electromagnet 111 of the second reversing valve 202 simultaneously supply electric signals, and the low-pressure oil enters the port DL of the third electromagnetic ball valve 201 from the port CL of the second check valve 217, then enters the port FL of the second reversing valve 202 from the port HL of the third electromagnetic ball valve 201, then enters the port QL of the first check throttle valve 203 from the port FB of the second reversing valve 202, is output from the port HL of the first check throttle valve 203, and opens the second balance valve 204 through the port KZ of the second balance valve 204. Low-pressure oil is input from the first balance valve 205, is output from the KL port of the first balance valve 205, enters the fast-forwarding chamber 316 through the YK port of the static piston rod 312, and is pushed by the low-pressure oil to move the piston rod 313 down rapidly, so that rapid mold closing is realized, as shown in fig. 2 and 3.
In the descending process of the movable piston rod 313, negative pressure is generated in the rodless cavity 314, the liquid filling valve 321 is opened under the action of the negative pressure, oil in the high-level oil tank 322 is sucked into the rodless cavity 314, quick liquid filling is realized, quick die assembly is realized without depending on extra output flow of an oil pump, the cost and the energy consumption are reduced, and the noise is reduced.
During mold closing, the hydraulic fluid in the rod chamber 315 is output through the YH port, input through the JL port of the second balancing valve 204, output from the IL port of the second balancing valve 204, input through the HL port of the second check throttle 206, output through the GL port of the second check throttle 206, input through the FA port of the second selector valve 202, output through the FT port of the second selector valve 202, input through the T2 port of the return oil filter 107, and output through the T1 port of the return oil filter 107 into the oil tank 101. The first balance valve 205 and the second balance valve 204 can make the piston rod 313 keep the speed smooth and without impact during the operation.
When the movable piston rod 313 approaches the stroke end quickly, the mold closing is changed from quick to slow, and the liquid filling valve 321 is closed under the action of a return spring. When the electromagnet 111 at the end a of the third electromagnetic ball valve 201 is powered off and loses an electric signal, low-pressure oil passes through the first throttle valve 218 to limit the flow rate of the low-pressure oil, meanwhile, an electric signal is input to the end a of the second electromagnetic ball valve 207, the low-pressure oil is output from the CL port of the second one-way valve 217, is input from the EP port of the second electromagnetic ball valve 207, is output from the EO port of the second electromagnetic ball valve 207, enters the rodless cavity 314 through the YG port, and the movable piston rod 313 slowly reaches the stroke end point to complete mold closing, as shown in fig. 6.
At this time, the oil liquid continuously enters the rodless cavity 314 through the YG port, the movable piston rod 313 starts to be pre-pressurized, and under the monitoring of the pressure sensor 220, after the rodless cavity 314 reaches the set pressure, the low-pressure oil pump 102 is closed, the second reversing valve 202 and the second electromagnetic ball valve 207 lose the electric signals, and the valve core returns to the original position.
At this time, the second motor 114 is started, the electromagnet 111 of the first electromagnetic relief valve 211 gives an electric signal, the AH port of the high-pressure oil pump 103 outputs high-pressure oil, the a port of the first directional valve 208 inputs an electric signal, the high-pressure oil is input from the PR port of the first directional valve 208 and is output from the BR port of the first directional valve 208, and the high-pressure oil is input from the BH port of the first check valve 216 and is output from the CH port of the first check valve 216. Meanwhile, an electric signal is input to the a-port of the first electromagnetic ball valve 209, and high-pressure oil is input from the DH port of the first electromagnetic ball valve 209, output from the EH port of the first electromagnetic ball valve 209, and enters the rodless chamber 314 through the YG port to be pressurized. When the pressure sensor 220 detects that the pressure in the rodless cavity 314 reaches a set value, the end a of the first electromagnetic ball valve 209 loses the electric signal, the valve core is closed, and the pressure applied to the movable piston rod 313 is kept, so that pressure maintaining is performed. At the same time, the second electric motor 114 stops acting, and the a end of the first reversing valve 208 loses the electric signal and returns to the original position.
After the tire vulcanization is completed, the pressure needs to be relieved firstly and then the mold is opened, an electric signal is input into the end a of the fourth electromagnetic ball valve 210, and high-pressure oil in the rodless cavity 314 enters the EJ port of the fourth electromagnetic ball valve 210 through the YG port and then is output to the oil tank 101 through the EI port of the fourth electromagnetic ball valve 210. When the pressure sensor 220 detects that the pressure in the rodless cavity 314 is zero, the fourth electromagnetic ball valve 210 loses the electric signal, and the pressure relief is completed.
When the mold is opened, the first motor 112 is started, the electromagnet 111 of the second electromagnetic relief valve 212 gives an electric signal, the AL port of the low-pressure oil pump 102 outputs low-pressure oil, and the low-pressure oil is input from the BL port of the second check valve 217 and output from the CL port of the second check valve 217. Meanwhile, the a-end electromagnet 111 of the third electromagnetic ball valve 201 and the a-end electromagnet 111 of the second reversing valve 202 simultaneously supply electric signals, low-pressure oil enters the DL port of the third electromagnetic ball valve 201 from the CL port of the second check valve 217, then enters the FL port of the second reversing valve 202 from the HL port of the third electromagnetic ball valve 201, then enters the GL port of the second check throttle valve 206 from the FA port of the second reversing valve 202, meanwhile, the low-pressure oil passes through the KX port of the liquid filling valve 321 to open the liquid filling valve 321, the low-pressure oil enters the IL port of the second balance valve 204 from the HL port of the second check throttle valve 206 to be input, and meanwhile, the low-pressure oil opens the first balance valve 205 through the FY port of the first balance valve 205. The low-pressure oil is output from the JL port of the second balanced valve 204 and enters the rod chamber 315 from the YH port, and the piston rod 313 is moved to retract to the initial position under the pushing of the low-pressure oil, as shown in fig. 5, so as to realize the quick die opening.
The oil in the rodless chamber 314 is output through an YL port, input from a ZL port of the charge valve 321, and output from an XL port of the charge valve 321 into the high-level oil tank 322, at which time a cycle ends. When the oil in the high-level oil tank 322 is too much, the oil will flow back to the oil tank 101 from the YL port of the high-level oil tank 322, so as to avoid the influence on the tire quality caused by the overflow of the hydraulic oil from the high-level oil tank 322.
The integrated hydraulic system provided by the embodiment has the advantages of compact structure, reduced occupied space, simplicity and convenience in installation, improvement of working efficiency, few pipeline connecting points, low leakage probability of hydraulic oil, no need of relying on extra output flow of an oil pump to realize quick die assembly, reduction of cost and energy consumption and reduction of noise.
As shown in fig. 4 to 6, the present embodiment further provides a tire vulcanizer, including the above-mentioned integrated hydraulic system, which can complete the pressurization and pressure maintaining steps after the tire vulcanizer rapidly closes the mold, and complete the pressure relief step before the tire vulcanizer rapidly opens the mold after the vulcanization is completed, thereby effectively ensuring the tire vulcanization quality. The tire vulcanizer further includes a frame 600, an upper mold 400 and a lower mold 500, the upper mold 400 is slidably disposed on the frame 600, and the upper mold 400 is driven by the integrated hydraulic system to close and open the mold with the lower mold 500.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
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| CN202110480559.9A CN113175463B (en) | 2021-04-30 | 2021-04-30 | Integrated hydraulic system and tire vulcanizing machine |
| PCT/CN2022/088083 WO2022228257A1 (en) | 2021-04-30 | 2022-04-21 | Integrated hydraulic system and tire vulcanizing machine |
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| CN202110480559.9A CN113175463B (en) | 2021-04-30 | 2021-04-30 | Integrated hydraulic system and tire vulcanizing machine |
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| CN113175463B CN113175463B (en) | 2024-12-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022228257A1 (en) * | 2021-04-30 | 2022-11-03 | 萨驰智能装备股份有限公司 | Integrated hydraulic system and tire vulcanizing machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118517450B (en) * | 2024-05-14 | 2024-10-11 | 无锡宏霸机电股份有限公司 | Electric push rod |
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| Publication number | Publication date |
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| CN113175463B (en) | 2024-12-27 |
| WO2022228257A1 (en) | 2022-11-03 |
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