CN114654638A - Curtain coating extrusion device is used in battery diaphragm production - Google Patents
Curtain coating extrusion device is used in battery diaphragm production Download PDFInfo
- Publication number
- CN114654638A CN114654638A CN202011534768.9A CN202011534768A CN114654638A CN 114654638 A CN114654638 A CN 114654638A CN 202011534768 A CN202011534768 A CN 202011534768A CN 114654638 A CN114654638 A CN 114654638A
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- extrusion
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- 238000001125 extrusion Methods 0.000 title claims abstract description 67
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000007766 curtain coating Methods 0.000 title abstract description 5
- 239000007788 liquid Substances 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 24
- 238000005266 casting Methods 0.000 claims description 22
- 238000003860 storage Methods 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 19
- 238000011049 filling Methods 0.000 claims description 14
- 230000002528 anti-freeze Effects 0.000 claims description 13
- 230000004888 barrier function Effects 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000010345 tape casting Methods 0.000 description 2
- 244000208734 Pisonia aculeata Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/46—Heating or cooling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention belongs to the technical field of battery diaphragm production, in particular to a curtain coating extrusion device for producing a battery diaphragm, aiming at the problem that in the prior art, due to the fact that an extrusion port is of a long strip-shaped structure, the two ends of the extrusion port are cooled unevenly, and the later-stage buckling of a plate surface is caused, the curtain coating extrusion device comprises a base with a cavity arranged inside, an electrical element is convenient to install inside the base, the upper surface of the base is arranged to be of a step-shaped structure, a supporting frame is fixed on a platform with the lower upper surface of the base, an extrusion box is fixed at the top end of the supporting frame through a bolt, a jack is formed in the middle of one side, close to the higher platform of the base, of the extrusion box, a pushing pipe is connected in the jack in a sliding mode, and a pushing device is fixed on the end, close to the pushing pipe, of the upper surface of the base. The invention can soften the fluid near the extrusion port to reduce the friction resistance between the fluid and the pipe orifice, so that the flow rate near the outlet tends to be consistent, thereby avoiding the residual stress of the extruded diaphragm body and improving the quality of the extruded material.
Description
Technical Field
The invention relates to the technical field of battery diaphragm production, in particular to a tape casting extrusion device for battery diaphragm production.
Background
Lithium batteries are considered to be the most potential energy storage devices due to their high energy density and safe, reliable, rapid charging and discharging, and are widely used in 3C electronic products, electric vehicles, hybrid vehicles, and the like. However, the lithium battery has potential danger in application, and frequent lithium battery burning and explosion accidents bring great threat to the life and property safety of people. The lithium battery consists of a positive electrode, a negative electrode, a diaphragm and electrolyte, and the diaphragm is widely researched as a key material influencing the performance of the battery on the premise that the positive electrode material and the negative electrode material are not greatly improved.
At present, the lithium battery mainly uses polyolefin materials to prepare a diaphragm, but the compatibility with liquid electrolyte and the thermal stability at high temperature cannot achieve ideal effects. Adopt the casting machine preparation among the prior art more, the casting machine preparation is strickle through the scraper after extruding thick liquids and dry again and form, among the casting machine of prior art, because extrude the mouth and be rectangular shape structure when extruding, extrude near a period of time and extrude the mouth because the cooling inequality causes the middle part of cross section and the fluid velocity of flow of egress opening both ends department different, consequently, cause the internal stress of the diaphragm body both sides after extruding to be different, form surface defects such as fold easily after the cooling, consequently, just need an extrusion device to ensure that the extrusion temperature of the inside different positions in extrusion opening is the same. To ensure that residual stress in the diaphragm is minimized.
Disclosure of Invention
The invention provides a casting extrusion device for producing a battery diaphragm, aiming at solving the problem that in the prior art, due to the fact that an extrusion port is of a long strip structure, the two ends of the extrusion port are cooled unevenly, and the plate surface is buckled in the later period.
In order to achieve the purpose, the invention adopts the following technical scheme: a casting extrusion device for producing a battery diaphragm comprises a base with a cavity arranged therein, an electric element is convenient to mount in the base, the upper surface of the base is arranged to be of a step-shaped structure, a supporting frame is fixed on a platform with a lower upper surface of the base, an extrusion box is fixed at the top end of the supporting frame through a bolt, a jack is arranged in the middle of one side, close to a higher platform of the base, of the extrusion box, a pushing pipe is connected in the jack in a sliding manner, a pushing device is fixed at the end, close to the pushing pipe, of the upper surface of the base, a push plate is fixed at one end, far away from the pushing device, of the pushing pipe, a rectangular hole is formed in the middle of one end, far away from the pushing device, of the extrusion box, a discharging pipe is inserted in the rectangular hole, a communicated oil filling groove is formed in one end, close to the discharging pipe, of the outer wall of the whole body of the extrusion box, and an oil sealing plate with a closed opening of the oil filling groove is fixed, the heat conduction oil is equipped with in the cavity that dress oil groove and oil seal board constitute, and the tank bottom department of dress oil groove has the heating pipe through the bolt fastening, the tip of heating pipe is provided with the heater of looks adaptation with it, the tail end upper surface of extrusion case is opened there is the feed port, and has plugged in the feed port inlet pipe, the top of inlet pipe is fixed with the liquid storage pot, and the outer wall of liquid storage pot is close to the bottom and inlays and be equipped with the heating cabinet.
As the preferable scheme in the invention, the oil filling pipe is inserted in the middle of the upper surface of the oil sealing plate, and the glass cover with the diameter larger than that of the oil filling pipe is arranged in the middle of the oil filling pipe.
According to the preferable scheme of the invention, through holes are formed in the back surface of the push plate close to two sides, a barrier strip is fixed at one end, far away from the discharge pipe, of an opening of each through hole, an extension spring is fixed at one side, close to the discharge pipe, of each barrier strip, a sealing cover is fixed at one end, far away from each barrier strip, of each extension spring, and an annular check ring is fixed between each barrier strip and each sealing cover on the inner wall of each through hole.
As a preferable scheme in the invention, one side of the annular retainer ring, which is close to the sealing cover, is provided with an annular groove, and one side of the sealing cover, which is close to the annular groove, is fixedly provided with a rubber ring which is engaged with the annular groove.
As a preferable scheme in the invention, a speed reducing motor is fixed at one end of the liquid storage tank far away from the extrusion box, and a spiral plate is fixed at the top end of an output shaft of the speed reducing motor through a coupler.
According to the preferable scheme of the invention, the electromagnetic coil is fixed inside the bottom of the heating box, and the arc-shaped plate is fixed at the opening at the top end of the heating box.
As a preferable scheme in the invention, an antifreeze box is fixed at the tail end of the liquid storage tank close to the top, and antifreeze is fixed in the antifreeze box.
As a preferable scheme in the invention, one end of the top end of the liquid storage tank, which is close to the antifreeze box, is fixed with a feeding hopper, and the bottom end of the feeding hopper is provided with a one-way valve.
In a preferred embodiment of the present invention, a heating plate is fixed to the upper surface of the base near the middle of the support frame, and the upper surface of the heating plate is in close contact with the surface of the extrusion box.
To sum up, the beneficial effect in this scheme is:
1. according to the flow-casting extrusion device for producing the battery diaphragm, the extrusion box near the extrusion port is heated through the oil containing groove and the heat conducting oil which are arranged at the extrusion port, so that the fluid near the extrusion port can be softened, the friction resistance between the fluid and the pipe orifice is reduced, the flow rate near the outlet tends to be consistent, the extruded diaphragm body is prevented from having residual stress, and the quality of an extruded material is improved;
2. according to the casting extrusion device for producing the battery diaphragm, the height position of internal heat conduction oil can be observed in real time through the oil injection pipe arranged on the oil seal plate and the glass cover arranged in the middle of the oil injection pipe, the temperature of the heat conduction oil is convenient to detect, and the heating controllability of the liquid diaphragm close to the outer wall of the discharge pipe is improved;
3. according to the tape casting extrusion device for producing the battery diaphragm, the extension spring arranged on the barrier strip and the sealing cover arranged at the end part of the extension spring can enable fluid to break away the barrier of the sealing cover when the push plate is pulled back in use and flow to the other side of the push plate from the through hole, and when the push plate advances to push the fluid to be extruded, the sealing cover can be tightly buckled on the annular barrier ring to form a sealing body;
4. this kind of battery diaphragm production is with curtain coating extrusion device through setting up the hot plate that extrudes the case lower surface and hug closely, can heat the battery diaphragm liquid that will extrude when using, ensures to appear being heated unevenly at last extrusion end.
Drawings
FIG. 1 is a schematic cross-sectional structural view of a casting extrusion device for producing a battery diaphragm according to the present invention;
FIG. 2 is a schematic perspective view of an extrusion box of a casting extrusion device for producing a battery diaphragm according to the present invention;
FIG. 3 is a schematic view of an assembly structure of an extrusion box of a casting extrusion device for producing a battery diaphragm, which is provided by the invention;
FIG. 4 is a schematic view of a partial cross-sectional structure of a push plate of a casting extrusion device for producing a battery diaphragm according to the present invention;
FIG. 5 is an enlarged schematic view of a casting extrusion device for producing a battery separator in FIG. 1.
In the figure: the device comprises a base 1, a through hole 2, a barrier strip 201, a tension spring 202, an annular retainer ring 3, a sealing cover 4, a heating plate 5, a sink groove 6, heat conducting oil 7, a discharging pipe 8, a heating pipe 9, a heater 901, an oil tank 10, an oil seal plate 11, a glass cover 12, an oil filling pipe 1201, an extrusion box 13, a feed hole 1301, a push plate 14, a feeding pipe 15, a liquid storage tank 16, a spiral plate 17, an upper hopper 18, an antifreeze liquid box 19, a speed reducing motor 20, an arc plate 21, an electromagnetic coil 22, a heating box 23 and a propelling device 24.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and 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.
Example 1
Referring to fig. 1-5, a casting extrusion device for producing a battery diaphragm comprises a base 1 with a cavity therein, so that an electrical element can be conveniently installed inside the base 1, the upper surface of the base 1 is arranged to be a ladder-shaped structure, a supporting frame is fixed on a platform with a lower upper surface of the base 1, an extrusion box 13 is fixed at the top end of the supporting frame through bolts, a jack is formed in the middle of one side, close to a higher platform of the base 1, of the extrusion box 13, a pushing pipe is connected in the jack in a sliding manner, a pushing device 24 is fixed at the end, close to the pushing pipe, of the upper surface of the base 1, a pushing plate 14 is fixed at one end, far away from the pushing device 24, of the extrusion box 13, a rectangular hole is formed in the middle of one end, far away from the pushing device 24, of the extrusion box 13, a discharging pipe 8 is inserted in the rectangular hole, a communicated oil filling groove 10 is formed in one end, close to the discharging pipe 8, an opening of the oil filling groove 10 is fixed with an oil sealing plate 11 for sealing the opening, the cavity that dress oil groove 10 and oil seal board 11 constitute is equipped with conduction oil 7 in, and the tank bottom department of dress oil groove 10 is fixed with heating pipe 9 through the bolt, the tip of heating pipe 9 is provided with heater 901 rather than the looks adaptation, thereby can be when the battery diaphragm is about to extrude when using, extrude case 13 near the extrusion opening and heat, can soften near the fluid of extrusion opening, reduce its frictional resistance with the mouth of pipe department production, make near the velocity of flow of export tend to unanimity, thereby let the diaphragm body of extruding avoid having residual stress, improve the quality of extrudate, the tail end upper surface of extruding case 13 is opened there is the feed port 1301, and the grafting has inlet pipe 15 in the feed port 1301, the top of inlet pipe 15 is fixed with liquid storage pot 16, and the outer wall of liquid storage pot 16 is close to the bottom and inlays and is equipped with heating cabinet 23.
In the invention, the oil filling pipe 1201 is inserted in the middle of the upper surface of the oil sealing plate 11, and the glass cover 12 with the diameter larger than that of the oil filling pipe 1201 is arranged in the middle of the oil filling pipe 1201, so that the height position of the internal heat conducting oil 7 can be observed in real time when the device is used, the temperature of the heat conducting oil 7 is conveniently detected, and the heating controllability of the liquid diaphragm near the outer wall of the discharging pipe 8 is improved.
Wherein, the back of push pedal 14 is close to both sides and all has opened through-hole 2, and the drill way department of through-hole 2 keeps away from the one end of discharging pipe 8 and is fixed with blend stop 201, one side that blend stop 201 is close to discharging pipe 8 is fixed with extension spring 202, and the one end that extension spring 202 kept away from blend stop 201 is fixed with closing cap 4, the inner wall of through-hole 2 is located and is fixed with annular retaining ring 3 between blend stop 201 and closing cap 4, thereby can be when using when push pedal 14 pullback the blockking of closing cap 4 that the fluid can be washed away, flow to the opposite side of push pedal 14 in the through-hole 2, when push pedal 14 gos forward and promotes the fluid and extrude, closing cap 4 can be tightly detained on annular retaining ring 3, form the seal.
Wherein, the annular groove is arranged on one side of the annular retainer ring 3 close to the sealing cover 4, and the rubber ring engaged with the annular groove is fixed on one side of the sealing cover 4 close to the annular groove, thereby improving the sealing effect during pressing.
Wherein, the one end that the extrusion case 13 was kept away from to the liquid storage pot is fixed with gear motor 20, and gear motor 20's output shaft top is fixed with spiral plate 17 through the shaft coupling to can mix the fluid in the liquid storage pot 16 and promote to inlet pipe 15 department when using, improve unloading speed, avoid the fluid to bond at the inner wall of liquid storage pot.
Wherein, the inside solenoid 22 that is fixed with in bottom of heating cabinet 23, and the top opening of heating cabinet 23 is fixed with arc 21 to can heat the heat preservation through solenoid 22 to the inside material of liquid storage pot 16 in the use.
Wherein, the end of the liquid storage tank 16 near the top is fixed with an antifreeze box 19, and the antifreeze is fixed in the antifreeze box 19.
Wherein, one end of the top end of the liquid storage tank 16 close to the antifreeze box 19 is fixed with an upper hopper 18, and the bottom end of the upper hopper 18 is provided with a one-way valve.
Wherein, the middle that the upper surface of base 1 is close to the carriage is fixed with hot plate 5, and the surface of extruding case 13 is hugged closely to the upper surface of hot plate 5 to can heat the battery diaphragm liquid of being about to extrude when using, ensure to appear being heated unevenly at last extrusion end.
The working principle is as follows: before use, the oil tank 10 is filled with heat conduction oil 7 and heated to boiling for heat preservation, the position of oil is observed, when the battery diaphragm solution is used, the battery diaphragm solution is added into the liquid storage tank 16 from the feeding hopper 18, then the electromagnetic coil 22 is electrified to heat the solution in the liquid storage tank 16, then the speed reduction motor 20 is started to drive the spiral plate 17 to slowly stir and convey the internal material until the material is pushed into the feeding pipe 15, and finally the pushing device 24 is started again to slowly extrude the material leaking into the extrusion box 13 from the discharge pipe 8.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A casting extrusion device for producing a battery diaphragm comprises a base (1) with a cavity arranged therein, an electric element is conveniently arranged in the base (1), the upper surface of the base (1) is arranged to be of a step-shaped structure, a supporting frame is fixed on a platform with a lower upper surface of the base (1), an extrusion box (13) is fixed at the top end of the supporting frame through bolts, a jack is formed in the middle of one side, close to a higher platform of the base (1), of the extrusion box (13), a pushing pipe is connected in the jack in a sliding mode, a propelling device (24) is fixed at the end portion, close to the pushing pipe, of the upper surface of the base (1), a pushing plate (14) is fixed at one end, far away from the propelling device (24), of the pushing pipe, and is characterized in that a rectangular hole is formed in the middle of one end, far away from the propelling device (24), of the extrusion box (13), and a discharging pipe (8) is inserted in the rectangular hole, one end that the whole body outer wall of extrusion case (13) is close to discharging pipe (8) is opened and is had dress oil groove (10) of intercommunication, and dress oil groove (10) opening part is fixed with its opening confined oil seal board (11), is equipped with in the cavity that dress oil groove (10) and oil seal board (11) constitute conduction oil (7), and the tank bottom department of dress oil groove (10) has heating pipe (9) through the bolt fastening, the tip of heating pipe (9) is provided with heater (901) of looks adaptation with it, the tail end upper surface of extrusion case (13) is opened has feed port (1301), and has pegged graft in feed port (1301) inlet pipe (15), the top of inlet pipe (15) is fixed with liquid storage pot (16), and the outer wall of liquid storage pot (16) is close to the bottom and inlays and is equipped with heating cabinet (23).
2. A casting extrusion device for producing a battery diaphragm according to claim 1, wherein a filling pipe (1201) is inserted in the middle of the upper surface of the oil seal plate (11), and a glass cover (12) having a diameter larger than that of the filling pipe (1201) is provided in the middle of the filling pipe (1201).
3. A casting extrusion device for producing a battery diaphragm according to claim 1, wherein the back surface of the push plate (14) is provided with through holes (2) near both sides, a barrier strip (201) is fixed at one end of the through hole (2) far away from the discharge pipe (8), an extension spring (202) is fixed at one side of the barrier strip (201) near the discharge pipe (8), a sealing cover (4) is fixed at one end of the extension spring (202) far away from the barrier strip (201), and an annular retaining ring (3) is fixed between the barrier strip (201) and the sealing cover (4) on the inner wall of the through hole (2).
4. A casting extrusion device for producing battery separator according to claim 3, characterized in that the side of the annular retainer ring (3) close to the cover cap (4) is provided with an annular groove, and a rubber ring engaged with the annular groove is fixed on the side of the cover cap (4) close to the annular groove.
5. A casting extrusion device for producing battery diaphragm according to claim 1, characterized in that a speed reduction motor (20) is fixed at one end of the liquid storage tank far away from the extrusion box (13), and a spiral plate (17) is fixed at the top end of an output shaft of the speed reduction motor (20) through a coupling.
6. Casting extrusion device for producing battery separator according to claim 1, characterized in that electromagnetic coil (22) is fixed inside the bottom of the heating box (23), and arc-shaped plate (21) is fixed at the top opening of the heating box (23).
7. Casting extrusion apparatus for battery separator production according to claim 1, characterized in that near the top of the trailing end of the liquid storage tank (16) is fixed an antifreeze tank (19), and antifreeze is fixed in the antifreeze tank (19).
8. Casting extrusion apparatus for battery separator production according to claim 1, characterized in that the top end of the liquid storage tank (16) near the antifreeze box (19) is fixed with an upper hopper (18), and the bottom end of the upper hopper (18) is provided with a one-way valve.
9. Casting extrusion device for producing battery diaphragm according to claim 1, characterized in that the upper surface of the base (1) near the middle of the support frame is fixed with a heating plate (5), and the upper surface of the heating plate (5) is tightly attached to the surface of the extrusion box (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011534768.9A CN114654638A (en) | 2020-12-23 | 2020-12-23 | Curtain coating extrusion device is used in battery diaphragm production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011534768.9A CN114654638A (en) | 2020-12-23 | 2020-12-23 | Curtain coating extrusion device is used in battery diaphragm production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114654638A true CN114654638A (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011534768.9A Pending CN114654638A (en) | 2020-12-23 | 2020-12-23 | Curtain coating extrusion device is used in battery diaphragm production |
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| Country | Link |
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| CN (1) | CN114654638A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2140459Y (en) * | 1992-10-29 | 1993-08-18 | 吉林省石油总公司 | Differential pressure piston valve |
| CN101264653A (en) * | 2007-03-13 | 2008-09-17 | 梁辉洪 | High speed injection molding method and injection molding machine implementing the method |
| CN101310961A (en) * | 2007-05-23 | 2008-11-26 | 天津市康库得机电技术有限公司 | Thick wall casting compression molding device and technique |
| CN203583612U (en) * | 2013-12-06 | 2014-05-07 | 李建华 | Pipeline dredger |
| CN207388259U (en) * | 2017-11-07 | 2018-05-22 | 焦作市林烨橡胶工业有限公司 | A kind of extruder for rubber production |
-
2020
- 2020-12-23 CN CN202011534768.9A patent/CN114654638A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2140459Y (en) * | 1992-10-29 | 1993-08-18 | 吉林省石油总公司 | Differential pressure piston valve |
| CN101264653A (en) * | 2007-03-13 | 2008-09-17 | 梁辉洪 | High speed injection molding method and injection molding machine implementing the method |
| CN101310961A (en) * | 2007-05-23 | 2008-11-26 | 天津市康库得机电技术有限公司 | Thick wall casting compression molding device and technique |
| CN203583612U (en) * | 2013-12-06 | 2014-05-07 | 李建华 | Pipeline dredger |
| CN207388259U (en) * | 2017-11-07 | 2018-05-22 | 焦作市林烨橡胶工业有限公司 | A kind of extruder for rubber production |
Non-Patent Citations (1)
| Title |
|---|
| （美）凯西主编，叶惠莲等译: "《制浆造纸化学工艺学 第三版 第四卷》", 28 February 1991, 轻工业出版社, pages: 555 - 556 * |
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