CN220760956U - Release agent quantitative spraying device for forming press - Google Patents
Release agent quantitative spraying device for forming press Download PDFInfo
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- CN220760956U CN220760956U CN202322341899.0U CN202322341899U CN220760956U CN 220760956 U CN220760956 U CN 220760956U CN 202322341899 U CN202322341899 U CN 202322341899U CN 220760956 U CN220760956 U CN 220760956U
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- Prior art keywords
- release agent
- pipe
- storage tank
- way valve
- spraying device
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- 238000005507 spraying Methods 0.000 title claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 118
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000003860 storage Methods 0.000 claims abstract description 30
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 20
- 238000007493 shaping process Methods 0.000 claims abstract 2
- 238000000465 moulding Methods 0.000 claims description 25
- 229910052757 nitrogen Inorganic materials 0.000 claims description 18
- 230000008676 import Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000006082 mold release agent Substances 0.000 claims 5
- 229910001172 neodymium magnet Inorganic materials 0.000 abstract description 12
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000843 powder Substances 0.000 abstract description 8
- 238000000889 atomisation Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Landscapes
- Casting Devices For Molds (AREA)
Abstract
The utility model belongs to the technical field of neodymium iron boron powder magnetic field forming presses, and particularly relates to a release agent quantitative spraying device for a forming press. The utility model provides a shaping release agent ration spraying device for press, is including the storage tank that is used for storing the release agent, the storage tank is connected with the constant delivery pump of control release agent outflow volume, the constant delivery pump is connected with the release agent outlet pipe, the release agent outlet pipe is connected with the shower nozzle, be equipped with the nitrogen gas inlet tube that makes the release agent atomizing between release agent outlet pipe and the shower nozzle. The utility model has the advantage of precisely controlling the spraying dosage of the release agent.
Description
Technical Field
The utility model belongs to the technical field of neodymium iron boron powder magnetic field forming presses, and particularly relates to a release agent quantitative spraying device for a forming press.
Background
In the neodymium iron boron production process, in order to prolong the service lives of a die cavity and a punch of a magnetic field forming press and enable a formed pressed compact to be smoothly demoulded, the pressed compact is ensured to be good in appearance and the die is not damaged, and a demoulding agent is needed to be used for demould.
Chinese patent with application number CN202010278183.9 discloses a release agent spraying device, a storage tank stores release agent, a high-pressure nitrogen gas is filled into an air inlet of the storage tank, a liquid outlet of the storage tank is connected with an atomizer, a flow rate of the release agent is controlled between the liquid outlet and the atomizer through a throttle valve, and the opening and closing of an output pipe is controlled and connected through a two-way electromagnetic valve.
In the scheme, the release agent is driven to enter the atomizing nozzle through nitrogen pressure, and the quantity of the sprayed release agent is controlled by controlling the on-off time of the release agent storage tank output pipe through the throttle valve and the two-way electromagnetic valve. The method has the problem that when the nitrogen pressure is unstable or the release agent liquid level in the storage tank is low, the amount of the sprayed release agent is different, so that the production process is unstable. The release agent spraying time is short, the film thickness is small, the die is easy to stretch, the surface of the pressed compact is damaged, the release agent spraying time is long, the film thickness is large, the release agent consumption is large, a certain degree of waste is caused, the release agent is sprayed too much, the carbon content of a product can be increased, the coercive force is reduced along with the increase of the carbon content, the compactness of a magnet is deteriorated, and the corrosion resistance is reduced.
Disclosure of Invention
The utility model aims to provide a release agent quantitative spraying device for a molding press, which can accurately control the spraying dosage of the release agent.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a forming press is with release agent ration spraying device, includes the storage tank that is used for storing the release agent, still includes proportioning pump and atomizer, through release agent inflow pipe intercommunication between storage tank and the proportioning pump, through release agent outlet pipe intercommunication between proportioning pump and atomizer, release agent outlet pipe and nitrogen gas lets in the output intercommunication of pipe, and the input of nitrogen gas lets in the pipe is used for supplying nitrogen gas to let in, release agent outlet pipe includes release agent outlet pipe and breather pipe, be connected through the three-way valve between release agent outlet pipe and the breather pipe, the three-way valve includes cavity, an import and two exports, two exports of three-way valve respectively with nitrogen gas lets in the pipe with the breather pipe is connected, the import of three-way valve with release agent outlet pipe is connected, the import of three-way valve is located the below of three-way valve cavity and two exports, all be equipped with the check valve on release agent outlet pipe and the nitrogen gas lets in the pipe.
During the use, operating personnel calculate the surface area according to the length and width of the molding press die cavity and the height that neodymium iron boron powder can be piled up in the molding press die cavity, later multiply the thickness and the surface area that need spraying release agent, calculate the volume of required release agent, take out the release agent of this volume through the constant delivery pump for release agent flows into the release agent outlet pipe, later lets in high-pressure nitrogen gas through nitrogen gas inlet pipe and blows out the release agent, and finally the release agent atomizes in the atomizer. The fixed displacement pump can be a gear pump, a metering pump, a peristaltic pump and the like, wherein one end of the nitrogen inlet pipe can be connected with a pressure tank or a supercharger. Wherein the atomizing nozzle is any existing nozzle capable of realizing the atomization of the release agent. The three-way valve is arranged to ensure that high-pressure nitrogen of the nitrogen inlet pipe and the release agent of the release agent outlet pipe are converged at the three-way valve, so that gas and liquid are introduced simultaneously, and the release agent is ensured to be completely discharged. And the release agent is pumped into the cavity of the three-way valve by the gear pump, and because the inlet of the three-way valve is positioned below the cavity of the three-way valve and the two outlets, the release agent is subjected to gravity, a part of the release agent can be positioned in the inlet of the three-way valve and the release agent outlet pipe, and the release agent in the cavity of the three-way valve is the amount which needs to be blown out by nitrogen. The check valve can prevent high-pressure nitrogen from pressing the release agent in the three-way valve back into the gear pump and prevent the release agent in the three-way valve from flowing into the nitrogen inlet pipe, thereby preventing the release agent from remaining.
Preferably, the storage tank is an atmospheric storage tank.
Through setting up the ordinary pressure storage tank, need not to let in nitrogen gas in the storage tank.
Preferably, the storage tank is provided with an outflow port connected to the release agent inflow pipe, and the outflow port is located at the lower end of the storage tank.
The outflow port is arranged at the lower end of the storage tank, so that the outflow port can be ensured to be positioned below the liquid level of the release agent, and the release agent can flow out from the outflow port.
Preferably, the fixed displacement pump is a gear pump.
The gear of the gear pump is meshed, the discharged release agent is the same when the gear pump rotates for one circle, and the total spraying volume of the release agent is divided by the flow of one circle of rotation of the gear pump, so that the number of circles of rotation of the gear pump is obtained.
Preferably, the gear pump is driven by a servo motor.
The pulse number of each circle of rotation of the servo motor can be set, the pulse number of each circle of rotation of the servo motor is multiplied by the number of circles that the gear pump needs to rotate, so that the pulse number P of the total spraying amount of the required release agent discharged by the gear pump of the servo motor is obtained, and when a molding press of another model is adopted, an operator can control the volume amount of the release agent extracted by the gear pump by changing the set pulse number P after calculating.
Preferably, the nitrogen inlet pipe is provided with an electromagnetic valve.
The on-off of high-pressure nitrogen in the nitrogen inlet pipe can be controlled by arranging the electromagnetic valve.
The utility model has the following advantages: the method has the advantages that the conveying amount of the release agent is the same each time, the waste of the release agent is avoided, meanwhile, the increase of the carbon content in the NdFeB product caused by the excessive release agent containing carbon is avoided, the magnetic property and the corrosion resistance of the NdFeB are improved, the appearance of the pressed compact is good, the service life of the die is prolonged, and the production cost is reduced.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic view of the structure of a molding press cavity.
Fig. 3 is a cross-sectional view of a molding press cavity.
Fig. 4 is a cross-sectional view of the three-way valve after release agent is introduced.
Reference numerals: the device comprises a storage tank 1, a gear pump 2, a release agent outlet pipe 3, a first one-way valve 4, an electromagnetic valve 5, a pressure tank 51, a nitrogen gas inlet pipe 6, a second one-way valve 7, a three-way valve 8, a chamber 81, an inlet 82, a first outlet 83, a second outlet 84, a vent pipe 9, an atomizing nozzle 10, an outflow port 11, a feed port 12, a discharge port 13, a release agent inflow pipe 14, a molding press cavity 100, a lower mold pressure head 200 and an upper mold pressure head 201.
Detailed Description
The utility model is further described below with reference to the drawings and specific embodiments.
As shown in fig. 1 and 4, this embodiment discloses a release agent quantitative spraying device for a molding press, including a storage tank 1 for storing release agent, the storage tank 1 is a normal pressure storage tank, the storage tank 1 includes a feed inlet 12 located at the upper end of the storage tank and a discharge outlet 13 located at the bottom of the storage tank, the lower end of the storage tank is provided with an outflow port 11, the outflow port 11 is connected with a release agent inflow pipe 14, the release agent inflow pipe 14 is connected with a gear pump 2, and the gear pump 2 is driven by a servo motor (not shown in the drawing). The gear pump 2 is connected with a release agent outlet pipe 3 of the release agent outflow pipe, the tail end of the release agent outlet pipe 3 is connected with an inlet 82 of the three-way valve 8, and one end of the release agent outlet pipe 3, which is close to the three-way valve 8, is provided with a first one-way valve 4.
The three-way valve 8 further comprises a first outlet 83 and a second outlet 84, the second outlet 84 is connected with the nitrogen inlet pipe 6, and the first outlet 83 is connected with the vent pipe 9 of the release agent outflow pipe; the right-hand member of nitrogen gas lets in the pipe 6 is connected with the overhead tank 51 of blowout high pressure nitrogen gas, and the one end that nitrogen gas lets in the pipe 6 and is close to overhead tank 51 is equipped with the solenoid valve 5 of control nitrogen gas lets in the pipe 6 break-make, and the one end that nitrogen gas lets in the pipe 6 and is close to three-way valve 8 is equipped with second check valve 7. Wherein the pressure of nitrogen is 0.2-0.3 Mpa. Wherein the inlet 82 of the three-way valve is located below the chamber 81 of the three-way valve and the first and second outlets 83, 84.
The tail end of the vent pipe 9 is connected with an atomization nozzle 10, and an ejection port of the atomization nozzle 10 is attached to a cavity port of a molding press cavity 100.
As shown in fig. 2 and 3, the lower mold pressing head 200 extends into the molding press cavity 100, the upper mold pressing head 201 is arranged above the molding press cavity 100, the molding press cavity length is amm, the cavity width is bmm, the height is Hmm, if neodymium iron boron powder is added, the stacking height of the neodymium iron boron powder in the molding press cavity is hmm, the release agent is sprayed and filled in the whole cavity after being atomized at the atomizing nozzle 10, and finally, the release agent is uniformly coated on each surface in the cavity, and the coating area is the sum of four side areas and one bottom area of the cavity. The area of release agent applied within the mold cavity can be expressed as s=2ah+2bh+ab. The height of the neodymium iron boron powder in the molding press cavity is hmm, and may also be represented as a distance between the upper end surface of the lower mold ram 200 and the upper end surface of the molding press cavity 100.
The film thickness of the release agent spray coating was Lmm, and the total spray amount of the release agent was the product of the area coated in the cavity and the film thickness of the release agent, i.e., v=s×l.
When products with different specifications are pressed, the amount of release agent to be sprayed when the products with the specifications are pressed can be automatically calculated according to the size of a die cavity and the stacking height when neodymium iron boron powder is added.
The flow rate of one circle of rotation of the gear pump is Qml/rev, and the total spraying amount of the release agent is divided by the flow rate of one circle of rotation of the gear pump, so that the number of circles n of rotation of the gear pump is obtained after the gear pump continuously meshes and the release agent discharged is the same after each circle of rotation of the gear pump.
n=V/Q
The gear pump is driven by a servo motor, the pulse number of each circle of rotation of the servo motor can be set,
the pulse number of each circle of rotation of the servo motor is multiplied by the number of circles the gear pump needs to rotate, so that the pulse number P of the total spraying amount of the required release agent is obtained.
Taking 63.3mm by 48.6mm by 51.0mm as an example of a molding press for pressing the neodymium iron boron blank, the cavity length of the molding press is 63.3mm (a), the cavity width is 48.6mm (b), and if the height of neodymium iron boron powder after being added into the cavity of the molding press is 105mm (h). The height of the die cavity of the molding press is greater than 105mm (H).
The area of the coating in the die cavity was S=2×63.3×105+2×48.6×105+63.3×48.6≡ 26575mm 2 。
The thickness of the release agent film is small, the die is easy to stretch, the surface of the pressed compact is damaged, the film thickness of the release agent film is large, the consumption of the release agent is large, the film thickness of the release agent atomization coating is 0.01-0.02 mm, and the film thickness is 0.01mm.
Total spray quantity v= 26575 ×0.01×266mm of release agent 3 =0.26ml。
The flow rate of one circle of rotation of the gear pump is 0.2ml, and the number of circles of rotation of the gear pump is required to be n=0.26/0.2=1.3
The gear pump is driven by a servo motor, the pulse number of each circle of rotation of the servo motor is 10000, and the servo motor drives the gear pump to discharge the pulse number of the required total spraying amount of the release agent.
P=1.3×10000=13000
The servo motor drives the gear pump 2 to rotate 1.3 circles each time, so that 0.26ml of release agent can be pumped into the three-way valve 8, atomized under the action of nitrogen with the pressure of 0.2Mpa, and sprayed onto the inner surface of a molding press cavity through the atomizing nozzle 10. Compared with the atomization mode of the air pressure agent, the usage amount of the release agent is 0.5 ml-1 ml each time, the usage amount of the release agent is saved, and the magnetic property and the corrosion resistance of the product are improved.
In use, the gear pump 2 firstly pumps out the release agent and fills the release agent outlet pipe 3 and the inlet 82 of the three-way valve, then sets the pulse number of the servo motor, quantitatively discharges the release agent through the gear pump, so that the cavity 81 of the three-way valve 8, the first outlet 83 and the second outlet 84 are both provided with the release agent, simultaneously opens the electromagnetic valve 5, enables high-pressure nitrogen to enter the three-way valve 8 and be mixed with the release agent, blows the release agent into the vent pipe 9, and atomizes the release agent mixed with nitrogen in the atomization nozzle 10 and then sprays the release agent. As shown in fig. 4, the release agent blown out by nitrogen is a portion circled by an oval frame in the drawing, and the release agent in the inlet 82 of the three-way valve is not blown out.
Claims (6)
1. The utility model provides a shaping release agent ration spraying device for press, includes the storage tank that is used for storing release agent, its characterized in that: still include constant delivery pump and atomizer, through release agent inflow pipe intercommunication between storage tank and the constant delivery pump, through release agent outflow pipe intercommunication between constant delivery pump and the atomizer, release agent outflow pipe and nitrogen gas lets in the output intercommunication of pipe, the input of pipe is used for supplying nitrogen gas to let in, release agent outflow pipe includes release agent outlet pipe and breather pipe, be connected through the three-way valve between release agent outlet pipe and the breather pipe, the three-way valve includes cavity, an import and two exports, two exports of three-way valve respectively with nitrogen gas lets in the pipe with the breather pipe is connected, the import of three-way valve with release agent outlet pipe is connected, the import of three-way valve is located the below of three-way valve cavity and two exports, release agent outlet pipe and nitrogen gas all are equipped with the check valve on letting in the pipe.
2. The quantitative spraying device for the mold release agent for the molding press according to claim 1, wherein: the storage tank is a normal pressure storage tank.
3. The quantitative spraying device for the mold release agent for the molding press according to claim 1, wherein: the storage tank is provided with an outflow port connected with the release agent inflow pipe, and the outflow port is positioned at the lower end of the storage tank.
4. The quantitative spraying device for the mold release agent for the molding press according to claim 1, wherein: the fixed displacement pump is a gear pump.
5. The quantitative spraying device for the mold release agent for the molding press according to claim 4, wherein: the gear pump is driven by a servo motor.
6. The quantitative spraying device for the mold release agent for the molding press according to claim 1, wherein: and the nitrogen inlet pipe is provided with an electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322341899.0U CN220760956U (en) | 2023-08-30 | 2023-08-30 | Release agent quantitative spraying device for forming press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322341899.0U CN220760956U (en) | 2023-08-30 | 2023-08-30 | Release agent quantitative spraying device for forming press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220760956U true CN220760956U (en) | 2024-04-12 |
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ID=90620662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322341899.0U Active CN220760956U (en) | 2023-08-30 | 2023-08-30 | Release agent quantitative spraying device for forming press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220760956U (en) |
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2023
- 2023-08-30 CN CN202322341899.0U patent/CN220760956U/en active Active
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