CN205117841U - A pressure accumulation type economize on electricity driving system for plastic cavity make -up machine - Google Patents
A pressure accumulation type economize on electricity driving system for plastic cavity make -up machine Download PDFInfo
- Publication number
- CN205117841U CN205117841U CN201520885754.XU CN201520885754U CN205117841U CN 205117841 U CN205117841 U CN 205117841U CN 201520885754 U CN201520885754 U CN 201520885754U CN 205117841 U CN205117841 U CN 205117841U
- Authority
- CN
- China
- Prior art keywords
- oil
- pressure
- strike
- pressure accumulation
- hydraulic cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The utility model provides a pressure accumulation type economize on electricity driving system for plastic cavity make -up machine which the servo motor of strike the oil mechanism can drive strike the oil pump strike the oil and get into this fuel feeding mechanism, and storage under pressure in a pressure accumulation mechanism to high -pressure hydraulic oil is disengaged with direct drive oil hydraulic cylinder mechanism in control pressure accumulation mechanism. And when the pressure accumulation pressure of the hydraulic oil of this pressure accumulation mechanism is less than a specific low pressure value, just start this strike the oil mechanism once more in order to carry out the pressure accumulation again to this pressure accumulation mechanism. Structural design through the high -pressure hydraulic oil direct drive oil hydraulic cylinder mechanism function of storing with pressure accumulation mechanism for during the function of drive oil hydraulic cylinder mechanism of pressure accumulation mechanism, strike the oil mechanism completely need not operate, can reduce the life of function noise, extension hydraulic oil and whole equipment by a wide margin, and improve the processing stability, and economize on electricity the effect and can reach more than 50%.
Description
Technical field
The utility model relates to a kind of power system, particularly relates to a kind of power system of the accumulator type for plastic hollow shaping machine.
Background technique
Consult Fig. 1, the power system design of current plastic hollow shaping machine is all drive single strike the oil pump 102 by single induction motor 101, so as to exporting the hydraulic oil of oil groove 103 with the action of Direct driver multiple oil hydraulic cylinder 104.When described oil hydraulic cylinder 104 is when being responsible for different processing actions respectively, because described oil hydraulic cylinder 104 cylinder diameter size and stroke differ, the strength driven also can because of will the workpiece (not shown) weight of movement and speed requirement and different, so strike the oil pump 102 operating pressure (P) must be set in the maximum pressure state of system requirements, and then be depressurized to pressure needed for each oil hydraulic cylinder 104 action by reduction valve 105.And because the movement speed of each oil hydraulic cylinder 104 is different, so need the running of the strike the oil pump 102 by large discharge, provide the hydraulic oil of enough flows (Q:l/min), so flow (Q) also will adopt a maximum demand to design.If the pressure of strike the oil pump 102 (P) is all very high with flow (Q), the induction motor 101 of strike the oil pump 102 is then driven just to need high-power (Hp=P × Q/450), very power consumption when causing this power system to operate, and large discharge strike the oil pump 102 and high-power induction motor 101 can cause equipment cost too high, the specification be not even suitable for, obtains additionally customized.
In addition, the actuation cycle time (cycletime) of plastic hollow shaping machine, except the forming action time, further comprises cool time, sometimes account for 2/3 or more of a specified duration of whole cycle time this cool time.When plastic hollow shaping machine operates at cool time, although each oil hydraulic cylinder 104 does not have action, induction motor 101 and strike the oil pump 102 still can continue to rotate, and the hydraulic oil just now sent can be back to oil groove 103 through leakage passage 106.This induction motor 101 can not be stopped transport and be turned the design of driving strike the oil pump 102; easily cause analysis of hydraulic oil overheat; so need to use more cooler 107 to carry out cooling down high-temperature hydraulic oil; except meeting very power consumption; high-temperature liquid force feed also easily causes hydraulic element reduced lifetime, and oil can be done sth. in advance deterioration and need often change oil.
In addition, due to the loop of single strike the oil pump 102 fuel feeding, the described oil hydraulic cylinder 104 of different stroke and cylinder diameter cannot overlap action, otherwise abnormal change can be there is in operating pressure and speed, and affect the stability of action, so just carry out the design of next action after an action must be taked to complete, cause processing time long, and reduce production capacity.
Summary of the invention
The purpose of this utility model is to provide a kind of and has an accumulator type section electric Force system of economize on electricity effect for plastic hollow shaping machine.
The utility model is used for the accumulator type section electric Force system of plastic hollow shaping machine, be applicable to the oil groove that connection group is connected on a storage liquid force feed, comprise at least one oil hydraulic cylinder mechanism, an oil feeding mechanism, a strike the oil mechanism, a pressure accumulation mechanism, and a control gear.This oil hydraulic cylinder mechanism comprises one can be driven running oil hydraulic cylinder by hydraulic oil, and a connection is connected to this oil hydraulic cylinder and can be driven the solenoid valve opened and inject this oil hydraulic cylinder for hydraulic oil.This oil feeding mechanism is communicated between this oil groove and this solenoid valve.This strike the oil mechanism comprises one and is communicated in this oil feeding mechanism and the hydraulic oil in this oil groove can be drawn the strike the oil pump entering this oil feeding mechanism, and a servomotor that this strike the oil pump can be driven to operate.This pressure accumulation mechanism comprises one can the accumulator of storage of higher pressures hydraulic oil, and one is communicated with the throttle valve be installed between this accumulator and this oil feeding mechanism with can being unlocked adjustment.This control gear comprise one can detect the pressure of this accumulator and export the pressure sensor of a pressure accumulation pressure, strike the oil controller that a signal is connected to this pressure sensor and this servomotor, and a running controller that can control the keying of this solenoid valve, this strike the oil controller can start this servomotor in this pressure accumulation pressure lower than during a low voltage value, and can close this servomotor when this pressure accumulation pressure is more than or equal to a high-voltage value.
Accumulator type section electric Force system for plastic hollow shaping machine described in the utility model, this oil feeding mechanism comprises an oil feed line be communicated between this oil groove and this solenoid valve, and one is installed on this oil feed line hydraulic oil adverse current can be prevented to the check valve of this oil groove, this strike the oil pump is installed on this oil feed line and between this check valve and this oil groove.
Accumulator type section electric Force system for plastic hollow shaping machine described in the utility model, this oil feeding mechanism also comprise a connection be connected to this oil feed line and between this check valve and this solenoid valve and can be controlled to open and close by this running controller let out a year valve, an and return line be communicated between this solenoid valve and this oil groove.
Accumulator type section electric Force system for plastic hollow shaping machine described in the utility model, this oil feeding mechanism also comprises a connection and is connected to this oil feed line and reduction valve between this solenoid valve and this throttle valve.
Accumulator type section electric Force system for plastic hollow shaping machine described in the utility model, this accumulator type section electric Force system comprises multiple oil hydraulic cylinder mechanism, this oil feed line has the main line section that is communicated in this oil groove, and be multiplely communicated in this main line section respectively and be communicated in the shunting section of this solenoid valve of described oil hydraulic cylinder mechanism respectively, this reduction valve is installed on one of them shunting section.
The beneficial effects of the utility model are: by the structural design of high pressure liquid force feed Direct driver oil hydraulic cylinder organisation operations stored with this pressure accumulation mechanism, make during this pressure accumulation mechanism drives described oil hydraulic cylinder organisation operations, this strike the oil mechanism does not need running completely, significantly can reduce running noise, extend the working life of hydraulic oil and whole equipment, and improve processing stability, and power savings can reach more than 50%.
Accompanying drawing explanation
Of the present utility model other feature and effect, clearly present in reference to graphic mode of execution, wherein:
Fig. 1 is the power system design of existing plastic hollow shaping machine;
Fig. 2 is the configuration diagram of the utility model for an embodiment of the accumulator type section electric Force system of plastic hollow shaping machine;
Fig. 3 is the functional block diagram of this embodiment; And
Fig. 4 is the view of similar Fig. 2, and another enforcement aspect of this embodiment is described.
Embodiment
Consult Fig. 2,3, the utility model is used for the embodiment of the accumulator type section electric Force system 2 of plastic hollow shaping machine, be applicable to install and be attached between an oil groove 800 of a plastic hollow shaping machine and a former block (not shown), can be used for driving this former block to carry out plastic hollow operations for forming, this oil groove 800 stores hydraulic oil.
This accumulator type section electric Force system 2 comprises the pressure accumulation mechanism 6 that 5, two, strike the oil mechanism that oil hydraulic cylinder mechanism 3, connection oil feeding mechanism 4, be installed between this oil groove 800 and described oil hydraulic cylinder mechanism 3 that multiple installation is linked to this former block is installed on this oil feeding mechanism 4 is installed on this oil feeding mechanism 4, and signal is connected to the control gear 7 of described oil hydraulic cylinder mechanism 3, this oil feeding mechanism 4, this strike the oil mechanism 5 and this pressure accumulation mechanism 6.
Each oil hydraulic cylinder mechanism 3 comprises the oil hydraulic cylinder 31 that an installation is linked to this former block, and connection is connected between this oil hydraulic cylinder 31 and this oil feeding mechanism 4 and signal is connected to the solenoid valve 32 of this control gear 7.This solenoid valve 32 can be controlled to open by this control gear 7, and the hydraulic oil that this oil feeding mechanism 4 is provided can be injected into this oil hydraulic cylinder 31.During enforcement, this solenoid valve 32 type of described oil hydraulic cylinder mechanism 3 can be direction solenoid valve, proportional direction valve etc., but because described solenoid valve 32 numerous types, also non-improvement emphasis of the present utility model, therefore no longer describe in detail, and be not limited with the above-mentioned type when implementing.
This oil feeding mechanism 4 comprise a connection be connected to this oil groove 800 and described solenoid valve 32 oil feed line 41, be installed on a check valve 42 of this oil feed line 41 respectively, multiple reduction valve 45 lets out a year valve 43 with one, and connection is installed on the return line 44 between described solenoid valve 32 and this oil groove 800.This oil feed line 41 has the main line section 411 that is communicated in this oil groove 800, and is multiplely communicated with the shunting section 412 being installed on described solenoid valve 32 respectively respectively toward extension from this main line section 411.This lets out a year valve 43 is be installed on this main line section 411, and between this check valve 42 and described solenoid valve 32.This check valve 42 is installed on this main line section 411, and between this let out carry between valve 43 and this oil groove 800.Described reduction valve 45 is installed on one of them shunting section 412 respectively.
This strike the oil mechanism 5 comprises one and is installed on this main line section 411 and strike the oil pump 51 between this check valve 42 and this oil groove 800, and a servomotor 52 being installed on this strike the oil pump 51.This servomotor 52 can be controlled running by this control gear 7, and drives this strike the oil pump 51 to operate to enter this oil feed line 41 to be drawn by the hydraulic oil in this oil groove 800.
Described pressure accumulation mechanism 6 is installed on this main line section 411 respectively, and between this check valve 42 and described shunting section 412, each pressure accumulation mechanism 6 comprises one can the accumulator 61 of storage of higher pressures hydraulic oil, and connection is installed on the throttle valve 62 between this main line section 411 and this accumulator 61.This throttle valve 62 can be unlocked the hydraulic fluid flow rate of adjustment between this accumulator 61 and this oil feed line 41, make this accumulator 61 can pressurized injection liquid force feed, or make this accumulator 61 disengage to this oil feed line 41 by the hydraulic oil of its storage of higher pressures, for driving, described oil hydraulic cylinder mechanism 3 works.
This control gear 7 comprises the strike the oil controller 72 that pressure sensor 71, the signal being installed on this main line section 411 is connected to this servomotor 52 and this pressure sensor 71, and signal is connected to the running controller 73 of described solenoid valve 32.
This pressure sensor 71 can sense the hydraulic fluid pressure of this main line section 411, and a corresponding output pressure accumulation pressure.This running controller 73 can control the keying of described solenoid valve 32.
This strike the oil controller 72 can coordinate the running correspondence of this running controller 73 to control the running of this servomotor 52, a specific low voltage value and a certain high pressure value is had in this strike the oil controller 72, can this pressure sensor 71 of receiving and analyzing export this pressure accumulation pressure, and can when this pressure accumulation pressure is lower than this specific low voltage value, start this servomotor 52, make this strike the oil pump 51 action of this servomotor 52 transmission, this oil feed line 41 is entered to be drawn by the hydraulic oil in this oil groove 800, and then the described accumulator 61 of pressurization injection stores, and be more than or equal to this certain high pressure value in this pressure accumulation pressure, close this servomotor 52, this strike the oil pump 51 is decommissioned.
In the present embodiment, can hydraulic fluid pressure needed for the running stroke of described oil hydraulic cylinder mechanism 3 and flow, plan described accumulator 61 specification size, and the size of this specific low voltage value of adjusted design, when making the pressure accumulation pressure of described accumulator 61 be positioned at this specific low voltage value, be still enough to order about described oil hydraulic cylinder 31 and complete current processing stroke.But when implementing, not as limit.
The utility model accumulator type section electric Force system 2 for drive plastic hollow shaping machine this former block running before, need first by hydraulic oil pressurized storage in described accumulator 61.When carrying out the hydraulic oil pressure accumulation storage of described accumulator 61, be first controlled to close described solenoid valve 32 by this control gear 7, namely first stop driving described oil hydraulic cylinder 31, and make described throttle valve 62 maintain opening state.Then, control to start this servomotor 52 by this control gear 7 to operate, hydraulic oil drawn enter this oil feed line 41 so as to ordering about this strike the oil pump 51, this accumulator 61 is injected to pressurize, in this process, this pressure sensor 71 can continue to sense the pressure accumulation pressure exporting this oil feed line 41, because whole oil feed line 41 is communicated with described accumulator 61, so namely this pressure accumulation pressure represent the hydraulic fluid pressure of described accumulator 61 internal reservoir, this control gear 7 can when this pressure accumulation pressure reaches this certain high pressure value, order about this servomotor 52 to shut down, just the pressure accumulation of described accumulator 61 is completed.
When starting to drive this former block to operate to carry out the operation of plastic hollow shaping operation, under the pressure accumulation pressure of described accumulator 61 is more than or equal to this certain high pressure value situation, this strike the oil controller 72 can not start this servomotor 52.Now, this running controller 73 can control the keying of described solenoid valve 32, disengages by described accumulator 61 running that the high pressure liquid force feed stored carrys out oil hydraulic cylinder 31 described in Direct driver.That is, when disengaging hydraulic oil with described accumulator 61 and driving described oil hydraulic cylinder 31, this strike the oil mechanism 5 can not operate completely.
When the pressure accumulation pressure of described accumulator 61 is lower than this specific low voltage value, this strike the oil controller 72 can in this running controller 73 via the described solenoid valve 32 of control, after making described oil hydraulic cylinder 31 complete current processing stroke, cool time such as in the actuation cycle time (cycletime) of plastic hollow shaping machine, order about this running controller 73 and close described solenoid valve 32, and this strike the oil controller 72 can drive this servomotor 52 entry into service, and then drive this strike the oil pump 51 to start the hydraulic oil in oil groove 800 to be drawn this oil feed line 41 of injection, with pressurized storage in described accumulator 61, until this pressure accumulation pressure that this pressure sensor 71 exports is more than or equal to this certain high pressure value.Now, this strike the oil controller 72 again can order about this strike the oil mechanism 5 and shut down, and this strike the oil controller 72 can trigger the keying that this running controller 73 controls described solenoid valve 32 again, make described accumulator 61 again disengage high pressure liquid force feed respectively, operate to drive this former block of described oil hydraulic cylinder 31 transmission.
When there is anomaly in this plastic hollow shaping machine, such as, when the pressure accumulation pressure anomaly of this oil feed line 41 is higher, control to start this by this running controller 73 and let out a year valve 43, let out the hydraulic oil except this oil feed line 41, the Security of whole plastic hollow shaping machine can be guaranteed.
In the present embodiment, be that Liang Ge pressure accumulation mechanism 6 is set, but when implementing, pressure accumulation mechanism 6 quantity can be increased and decreased in this oil feed line 41 as required, the driving power of more high pressure is provided to match, or extend the actuation time of whole accumulator type section electric Force system 2.
Coordinate and consult Fig. 4, in addition, and when implementing, also can multiple oil feeding mechanism 4 be set in a plastic hollow shaping machine, and a strike the oil mechanism 5, one or more pressure accumulation mechanism 6 and a pressure sensor 71 etc. are set respectively in described oil feeding mechanism 4, with this former block of transmission running that matches, but be not limited with above-mentioned enforcement aspect when implementing.
In sum, by driving the design of this strike the oil pump 51 with this servomotor 52, and in this oil feed line 41, described pressure accumulation mechanism 6 is set with prior pressure accumulation storage high pressure liquid force feed, and with the structural design of the running of oil hydraulic cylinder 31 mechanism described in the high pressure liquid force feed Direct driver of described pressure accumulation mechanism 6 storage, make during described pressure accumulation mechanism 6 drives described oil hydraulic cylinder mechanism 3 to operate, this strike the oil mechanism 5 does not need running completely, so noise when significantly can reduce plastic hollow shaping machine running, and obviously can improve the problem of analysis of hydraulic oil overheat, and contribute to the working life extending hydraulic oil and whole equipment, and the specification demands of this servomotor 52 and this strike the oil pump 51 can be reduced, and significantly reduce equipment cost, relative raising client uses wish and the market competitiveness.In addition, as long as the hydraulic fluid pressure that described pressure accumulation mechanism 6 stores and flow are enough, then the oil hydraulic cylinder 31 of large-diameter, the oil hydraulic cylinder 31 of Long travel, and the oil hydraulic cylinder 31 producing different action all Absorbable organic halogens ground overlap carry out, contribute to reducing the actuation cycle time, improve production capacity.And measuring examination through actual power consumption, power savings when the utility model accumulator type section electric Force system 2 runs well can reach more than 50%, is a kind of innovative design of more economizing on electricity.Therefore, really the purpose of this utility model can be reached.
As described above, be only embodiment of the present utility model, when can not limit the scope of the utility model enforcement with this, namely all simple equivalences done according to the utility model claims and description change and modify, and all still belong to scope of the present utility model.
Claims (5)
1. the accumulator type section electric Force system for plastic hollow shaping machine, be applicable to the oil groove that connection group is connected on a storage liquid force feed, this accumulator type section electric Force system comprises at least one oil hydraulic cylinder mechanism, and an oil feeding mechanism, this oil hydraulic cylinder mechanism comprises one can be driven running oil hydraulic cylinder by hydraulic oil, and a connection is connected to this oil hydraulic cylinder and can be driven the solenoid valve opened and inject this oil hydraulic cylinder for hydraulic oil, this oil feeding mechanism is communicated between this oil groove and this solenoid valve, it is characterized in that: this accumulator type section electric Force system also comprises a strike the oil mechanism, a pressure accumulation mechanism, and a control gear, this strike the oil mechanism comprises one and is communicated in this oil feeding mechanism and the hydraulic oil in this oil groove can be drawn the strike the oil pump entering this oil feeding mechanism, and a servomotor that this strike the oil pump can be driven to operate, this pressure accumulation mechanism comprises one can the accumulator of storage of higher pressures hydraulic oil, and one is communicated with the throttle valve be installed between this accumulator and this oil feeding mechanism with can being unlocked adjustment, this control gear comprises the pressure can detecting this accumulator and exports the pressure sensor of a pressure accumulation pressure, a signal is connected to the strike the oil controller of this pressure sensor and this servomotor, and a running controller that can control the keying of this solenoid valve, this strike the oil controller can start this servomotor in this pressure accumulation pressure lower than during a low voltage value, and this servomotor can be closed when this pressure accumulation pressure is more than or equal to a high-voltage value.
2. the accumulator type section electric Force system for plastic hollow shaping machine according to claim 1, it is characterized in that: this oil feeding mechanism comprises an oil feed line be communicated between this oil groove and this solenoid valve, and one is installed on this oil feed line hydraulic oil adverse current can be prevented to the check valve of this oil groove, this strike the oil pump is installed on this oil feed line and between this check valve and this oil groove.
3. the accumulator type section electric Force system for plastic hollow shaping machine according to claim 2, it is characterized in that: this oil feeding mechanism also comprise a connection be connected to this oil feed line and between this check valve and this solenoid valve and can be controlled to open and close by this running controller let out a year valve, an and return line be communicated between this solenoid valve and this oil groove.
4. the accumulator type section electric Force system for plastic hollow shaping machine according to claim 2, is characterized in that: this oil feeding mechanism also comprises a connection and is connected to this oil feed line and reduction valve between this solenoid valve and this throttle valve.
5. the accumulator type section electric Force system for plastic hollow shaping machine according to claim 4, it is characterized in that: this accumulator type section electric Force system comprises multiple oil hydraulic cylinder mechanism, this oil feed line has the main line section that is communicated in this oil groove, and be multiplely communicated in this main line section respectively and be communicated in the shunting section of this solenoid valve of described oil hydraulic cylinder mechanism respectively, this reduction valve is installed on one of them shunting section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520885754.XU CN205117841U (en) | 2015-11-09 | 2015-11-09 | A pressure accumulation type economize on electricity driving system for plastic cavity make -up machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520885754.XU CN205117841U (en) | 2015-11-09 | 2015-11-09 | A pressure accumulation type economize on electricity driving system for plastic cavity make -up machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205117841U true CN205117841U (en) | 2016-03-30 |
Family
ID=55573456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520885754.XU Active CN205117841U (en) | 2015-11-09 | 2015-11-09 | A pressure accumulation type economize on electricity driving system for plastic cavity make -up machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205117841U (en) |
-
2015
- 2015-11-09 CN CN201520885754.XU patent/CN205117841U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3548744B1 (en) | A plant for controlling delivery of pressurized fluid in a conduit, and a method of controlling a prime mover | |
| CN101691877B (en) | Servo motor control-based multi-pump combination controlled hydraulic power system | |
| CN201475067U (en) | Multi-pump combined control hydraulic power system based on servo motor control | |
| CN102588359A (en) | Hydraulic system, excavator and control method of hydraulic system | |
| CN105772680A (en) | Injection apparatus, molding apparatus, and molding method | |
| CN104632794A (en) | Electro-hydraulic servo system of direct drive type hydraulic hoist | |
| CN104029366B (en) | The energy-conserving hydraulic control device of hydraulic injection molding machine | |
| CN111442001A (en) | Oil circuit structure for double closed-loop control of injection speed and injection force and control mode | |
| CN104428077A (en) | Hydraulic extrusion press and method for operating a hydraulic extrusion press | |
| CN205117841U (en) | A pressure accumulation type economize on electricity driving system for plastic cavity make -up machine | |
| CN105014897A (en) | Energy-saving and pressure-maintaining device for hydraulic injection molding machine | |
| CN2931073Y (en) | Hydraulic equipment for double-pump double-proportion injection machine | |
| CN205089704U (en) | Oil pressure turbocharging system of function block in mould | |
| CN203994599U (en) | A kind of fast hydraulic pressure control device of hydraulic injection molding machine | |
| CN102935690A (en) | Multifunctional injection molding machine | |
| CN110454460B (en) | Quick oil cylinder with pressurization function | |
| CN203937141U (en) | A kind of hydraulic system of thin-walled cutlery box special injection molding | |
| CN108708889B (en) | Energy-saving type low-vibration fast-response hybrid control hydraulic press hydraulic system | |
| CN105538624A (en) | Mould clamping system for injection molding machine and oil way control method for mould clamping system for injection molding machine | |
| CN201579968U (en) | Pre-plasticizing mould-clearing hydraulic loop of injection machine | |
| CN201979674U (en) | Energy-saving oil supply system of injection molding machine | |
| CN206344377U (en) | Injection machine energy-saving type hydraulic system | |
| CN203641137U (en) | Motor energy-saving system for open hydraulic system | |
| CN209323586U (en) | A kind of excavator energy-saving hydraulic control system | |
| CN202640650U (en) | Multifunctional injection molding machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |