CN106216171A - A kind of extrusion coating machine die head pad, extrusion die and extrusion coating machine - Google Patents
A kind of extrusion coating machine die head pad, extrusion die and extrusion coating machine Download PDFInfo
- Publication number
- CN106216171A CN106216171A CN201610788741.XA CN201610788741A CN106216171A CN 106216171 A CN106216171 A CN 106216171A CN 201610788741 A CN201610788741 A CN 201610788741A CN 106216171 A CN106216171 A CN 106216171A
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- pad
- shunting
- die head
- extrusion
- coating machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
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Abstract
The present invention relates to a kind of extrusion coating machine die head pad, extrusion die and extrusion coating machine.This die head pad includes left and right side pad, also includes a shunting pad between left and right side pad, and the two sides of shunting pad respectively and form pad diffluence pass between the corresponding side surface of respective sides pad；Or also include at least two shunting pad between the pad of left and right side, between the opposite flank of adjacent shunting pad, be in edge external shunting pad corresponding side surface and the corresponding side surface of respective sides pad between form pad diffluence pass respectively.The extrusion coating machine die head pad that the present invention provides, can be realized several be coated with continuously, obtain coat, white space along vertical collector direction spaced " zebra formula " distribution pole piece, automatically reserve the white space welding for lug, improve quality and the production efficiency of pole piece.
Description
Technical field
The invention belongs to extrusion coating machine field, be specifically related to a kind of extrusion coating machine pad, extrusion die and extruding
Coating machine.
Background technology
During producing lithium ion battery, the coating of pole piece is requisite operation, is also to directly affect battery peace
The critical process of the properties such as Quan Xing, capacity and concordance.The most conventional pole coating mode has transfer type coating and squeezes
Pressure type is coated with two kinds.Transfer type coating apparatus structure is complicated, debugs loaded down with trivial details；And extrusion coater simple in construction, facility compact,
Debugging is convenient, can be used for the coating of higher viscosity fluid, can obtain the coating of degree of precision；Extrusion coated has been increasingly becoming main flow
One of coating technique.
Notification number is that the patent of CN205146588U discloses a kind of extrusion coating machine extrusion die and die head pad.Squeeze
Pressing die head includes upper die head, lower die head and the die head pad being located between upper and lower die head；Described die head pad includes along right and left
To the afterbody pad extended and the left and right side pad extended along the longitudinal direction being connected with afterbody pad two ends respectively, left and right
Form pad outlet between the opposite flank of sidepiece pad, between pad outlet and the corresponding position of upper and lower die head, form die head
Discharging opening.During coating, slurry is transmitted to coating machine extrusion die by screw pump, then coats on a current collector through mould discharge door.
The corresponding different thickness of different pad models and opening, in coating process, adjust the fabric width of coating area by changing pad,
By adjusting screw pump rotating speed, gap between the thickness of pad and die head and back flow roll controls coated face density.
In prior art, extrusion coated prime coats mode is that single width is coated with continuously；Obtained pole piece needs to scrape off one
The coat of fixed width degree forms white space, to facilitate the operations such as the extraction of cell polar ear, point bar, causes the production efficiency of pole piece
Relatively low.
Summary of the invention
It is an object of the invention to provide a kind of extrusion coating machine die head pad that can realize several continuous coatings.This
Bright provide a kind of extrusion die using above-mentioned die head pad and extrusion coating machine simultaneously.
In order to realize object above, the technical scheme of extrusion coating machine die head pad of the present invention is:
A kind of extrusion coating machine die head pad, including left and right side pad, also includes that is positioned at a left and right side pad
Shunting pad between sheet, the two sides of shunting pad respectively and form pad shunting between the corresponding side surface of respective sides pad
Mouthful；Or also include at least two shunting pad between the pad of left and right side, the opposite flank of adjacent shunting pad it
Between, form pad respectively and divide between corresponding side surface and the corresponding side surface of respective sides pad of the shunting pad that is in marginal position
Head piece.
The extrusion coating machine die head pad that the present invention provides, by arranging shunting pad between the pad of left and right side,
Can realize slurry shunting, obtain pulp layer, white space along vertical collector direction spaced " zebra formula " distributed pole
Sheet；This die head pad achieves several and is coated with continuously, automatically reserves the white space welding for lug, improves pole piece and produces
Efficiency.Meanwhile, traditional single width is coated with continuously, and the opening size of die head pad is much smaller than the discharging opening size of extrusion die, right
Relatively low in the utilization rate of extrusion die, and it is easily caused the slurry formation delay that slurry outlet end keeps away in port area, impact
The mobility of slurry and uniform state, the surface density concordance causing coat is poor；And the die head pad of the present invention, can basis
Space required when the width of pole piece and tab welding utilizes mould discharge door size to greatest extent, improves the profit of extrusion die
By rate, reduce the idle region in die head, improve the quality of coat on collector.
Preferably, connect between the rear end of left and right side pad and have the afterbody pad extended in left-right direction, shunt pad
Rear end be arranged on described afterbody pad.Shunting pad is the strip structure extended along the longitudinal direction.
Preferably, left and right side pad includes the vertical edge extended along the longitudinal direction and is arranged at vertical edge front end towards contra
To the horizontal edge of varus, pad diffluence pass is formed between the side of horizontal edge and the side of corresponding shunting pad.
It is further preferred that the width of described pad diffluence pass is the most equal.The front end of described shunting pad has chamfering.Institute
State the problem that chamfering structure can effectively solve pad opening part coat side density CONSENSUS difference.
The die head pad of the present invention, does not change the structure of slurry cavity in die head, and the impact on slurry fluid is little, can make
Slurry in die cavity is evenly distributed, and improves precision and the coating effect of coating.
The technical scheme of the extrusion die of the present invention is: a kind of extrusion die, including upper die head, lower die head, and is located at
Die head pad between upper die head, lower die head；Described die head pad includes left and right side pad, also includes that one is positioned at left and right
Shunting pad between sidepiece pad, the two sides of shunting pad respectively and form pad between the corresponding side surface of respective sides pad
Sheet diffluence pass；Or also include at least two shunting pad between the pad of left and right side, adjacent shunting pad relative
Between side, be in marginal position shunting pad corresponding side surface and the corresponding side surface of respective sides pad between formed respectively
Pad diffluence pass；Mould discharge door is formed between the corresponding position of pad diffluence pass and upper and lower die head.
Connect between the rear end of left and right side pad and have the afterbody pad extended in left-right direction, the rear end of shunting pad
It is arranged on described afterbody pad.Shunting pad is the strip structure extended along the longitudinal direction.
Left and right side pad includes the vertical edge extended along the longitudinal direction and is arranged at vertical edge front end towards relative direction varus
Horizontal edge, pad diffluence pass is formed between the side of horizontal edge and the side of corresponding shunting pad.
It is further preferred that the width of described pad diffluence pass is the most equal.The front end of described shunting pad has chamfering.
The extrusion die of the present invention, die head pad is simple with the matching relationship of upper and lower die head, it is achieved several are coated with continuously,
Widen the scope of application of extrusion coated, improve production efficiency and product quality.
The extrusion coating machine of the present invention be the technical scheme is that a kind of extrusion coating machine, including back flow roll and extrusion die
Head, described extrusion die, including upper die head, lower die head, and the die head pad being located between upper die head, lower die head；Described mould
Head gasket includes left and right side pad, also includes a shunting pad between the pad of left and right side, shunting pad
Two sides respectively and form pad diffluence pass between the corresponding side surface of respective sides pad；Or also include that at least two is positioned at
Shunting pad between the pad of left and right side, between the opposite flank of adjacent shunting pad, is in the shunting pad of marginal position
Corresponding side surface and the corresponding side surface of respective sides pad between form pad diffluence pass respectively；Pad diffluence pass and upper and lower mould
Mould discharge door is formed between the corresponding position of head.
The extrusion coating machine of the present invention, achieves several by the setting of die head pad and is coated with continuously, simplifies production work
Sequence, reduces production cost, improves the production efficiency of electrodes of lithium-ion batteries.
Accompanying drawing explanation
Fig. 1 be the die head pad of the embodiment of the present invention 1 structural representation；
Fig. 2 is the structural representation that the die head pad of the present invention has the embodiment of a shunting pad；
Fig. 3 is the structural representation that the present invention uses the extrusion die of the die head pad of Fig. 1；
Fig. 4 is the schematic diagram that the extrusion coating machine of the present invention carries out extrusion coated；
Fig. 5 is the schematic diagram of die head pad gained " zebra formula " anode pole piece using the present invention；
Fig. 6 is the schematic diagram of die head pad gained " zebra formula " cathode pole piece using the present invention.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
The extrusion coating machine of the present invention embodiment 1 of die head pad, structural representation as shown in Figure 1, Figure 3, including edge
The afterbody pad 1 of left and right directions extension and the left side pad 20 being connected with afterbody pad 1 two ends respectively, right side pad 21,
Left and right side pad includes the vertical edge extended along the longitudinal direction and is arranged at the vertical edge front end horizontal edge 4 towards relative direction varus；
Being provided with two bar shaped shunting pads 3 extended along the longitudinal direction between the pad of left and right side, the rear end of bar shaped shunting pad 3 sets
Being placed on described afterbody pad, front end has chamfering；Between the opposite flank of adjacent bar shunting pad, it is in marginal position
Pad diffluence pass 5 is formed respectively between corresponding side surface and the corresponding side surface of respective sides pad of shunting pad.
The width of described pad diffluence pass is the most equal.The width of two shunting pads is equal.
The embodiment 2 of extrusion coating machine die head pad of the present invention, as in figure 2 it is shown, include left and right side pad and one
Shunting pad 3 between the pad of left and right side, the rear end of shunting pad is arranged on described afterbody pad, and front end has
Chamfering；The two sides of shunting pad 3 respectively and form pad diffluence pass 5 between the corresponding side surface of respective sides pad.
In other embodiments of extrusion coating machine die head pad of the present invention, shunting pad can be that rear end is located at a certain
L-type structure on sidepiece pad, it is possible to be not connected with afterbody pad and/or sidepiece pad, and it is solid the mode such as to be bolted
Between upper and lower die head；The quantity of shunting pad can be flexible according to the welding space requirement of the size of collector or lug
Arrange；Shunting pad can be the front end trapezium structure less than rear end, or front end has the tongue type structure of arc transition.
The embodiment of the extrusion die of the present invention, as it is shown on figure 3, include upper die head 6, lower die head 7, and is located at upper and lower mould
Die head pad between Tou, the structure of described die head pad is identical with the structure of the die head pad of embodiment 1.
In other embodiments of the extrusion die of the present invention, the structure of die head pad and above-mentioned die head pad embodiment
Structure is identical.
The extrusion coating machine of the present invention, including back flow roll 8 and extrusion die, the structure of described extrusion die and above-mentioned extrusion die
The structure of head embodiment is identical.
The extrusion coating machine using the present invention carries out the schematic diagram of extrusion coated as shown in Figure 4, and slurry enters through feed pipe
Entering in extrusion die, the discharging opening of die head is correspondingly arranged on back flow roll 8, and collector 10 walks around the back of the body through the gap of back flow roll 8 with die head
Roller 8 is advanced to a direction；Slurry is coated to the surface of collector 10 after mould discharge door is extruded, and drying obtains coat
9.The surface density of coat 9 and width can be by controlling the gap between extrusion die and back flow roll 8 and the thickness of die head pad
Degree is controlled.
Several preparation methoies being coated with formation " zebra formula " anode pole piece continuously as shown in Figure 5 are:
(1) by LiFePO4, conductive agent KS-6 and SP, Kynoar, N-Methyl pyrrolidone according to 94:1:2:4:
The ratio of 100 adds closes in slurry blender, stirs 6h and form slurry under conditions of vacuum-0.9Mpa；
(2) using the die head pad that shunting pad quantity is three of the present invention, described shunting pad is wide, and at die head
Discharging opening spaced set makes the width of shunting discharging opening the most equal；The width of shunting pad is 40mm, and spacing is 220mm；Adjust
The screw pump rotating speed of whole coating machine, coating speed and coating machine tension force, carry out several and be coated with continuously, the overall width of coating foil
Degree is 1040mm, forms coating zone 13, white space 11 spaced " zebra formula " pole piece structure；Wherein, four coatings
The width in region 13 is 220mm, and the width of three white spaces 11 is 40mm, and the width in uncoated region, both sides 12 is
20mm；After using said method coating, the middle part along intermediate blank region carries out a point bar, and available 4 coating zones, both sides are not
The pole piece that coating zone is identical, is conveniently used for the extraction of lug and welds, and the coating of coating efficiency relatively single width improves 4 times.
Several preparation methoies being coated with formation " zebra formula " cathode pole piece continuously as shown in Figure 6 are:
(1) graphite powder, conductive agent SP, CMC, butadiene-styrene rubber, pure water are added conjunction slurry according to the ratio of 95:1:1:3:120
In blender, under conditions of vacuum-0.9Mpa, stir 5h form slurry；
(2) the die head pad of Fig. 1, wherein A=230mm, B=30mm are used；Adjust the screw pump rotating speed of coating machine, coating
Speed and coating machine tension force, carry out several and be coated with continuously, and the overall width of coating foil is 780mm, formation coating zone 13,
White space 11 spaced " zebra formula " pole piece structure；Wherein, the width of three coating zones 13 is 230mm, two
The width of white space 11 is 30mm, and the width in uncoated region, pole piece both sides 12 is 15mm；After using said method coating, edge
The middle part in intermediate blank region carries out a point bar, the pole piece that available 3 coating zones, uncoated region, both sides are identical, convenient uses
In lug extraction with weld, and coating efficiency relatively single width coating improve 3 times.
Claims (10)
1. an extrusion coating machine die head pad, including left and right side pad, it is characterised in that also include one be positioned at a left side,
Shunting pad between the pad of right side, the two sides of shunting pad respectively and are formed between the corresponding side surface of respective sides pad
Pad diffluence pass；Or also include at least two shunting pad between the pad of left and right side, the phase of adjacent shunting pad
To between side, be in marginal position and shunt between the corresponding side surface of pad and the corresponding side surface of respective sides pad shape respectively
Become pad diffluence pass.
2. extrusion coating machine die head pad as claimed in claim 1, it is characterised in that the rear end of left and right side pad it
Between connect and have an afterbody pad extended in left-right direction, the rear end of shunting pad is arranged on described afterbody pad.
Extrusion coating machine die head pad the most according to claim 2, it is characterised in that shunting pad is along the longitudinal direction
The strip structure extended.
4. extrusion coating machine die head pad as claimed in claim 1, it is characterised in that left and right side pad includes along front
Rear is to the vertical edge extended and is arranged at the vertical edge front end horizontal edge towards relative direction varus, and pad diffluence pass is formed at the side of horizontal edge
Between face and the side of corresponding shunting pad.
5. the die head pad of the extrusion coating machine as described in any one of Claims 1 to 4, it is characterised in that described pad shunts
The width of mouth is the most equal.
6. an extrusion die, including upper die head, lower die head, and the die head pad being located between upper die head, lower die head；Described
Die head pad includes left and right side pad, it is characterised in that also include a shunting pad between the pad of left and right side
Sheet, the two sides of shunting pad respectively and form pad diffluence pass between the corresponding side surface of respective sides pad；Or also include
At least two shunting pad between the pad of left and right side, between the opposite flank of adjacent shunting pad, is in margin location
Pad diffluence pass is formed respectively between corresponding side surface and the corresponding side surface of respective sides pad of the shunting pad put；Pad shunts
Mould discharge door is formed between mouth and the corresponding position of upper and lower die head.
7. extrusion die as claimed in claim 6, it is characterised in that connect between the rear end of left and right side pad and have along left
The afterbody pad that right direction extends, the rear end of shunting pad is arranged on described afterbody pad.
8. extrusion die as claimed in claim 7, it is characterised in that shunting pad is the bar shaped knot extended along the longitudinal direction
Structure.
9. extrusion die as claimed in claim 6, it is characterised in that left and right side pad includes extending along the longitudinal direction
Vertical edge and be arranged at the vertical edge front end horizontal edge towards relative direction varus, pad diffluence pass is formed at the side of horizontal edge and shunts with corresponding
Between the side of pad.
10. an extrusion coating machine, including back flow roll and extrusion die, it is characterised in that extrusion die such as the claims 6～
Described in 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610788741.XA CN106216171A (en) | 2016-08-31 | 2016-08-31 | A kind of extrusion coating machine die head pad, extrusion die and extrusion coating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610788741.XA CN106216171A (en) | 2016-08-31 | 2016-08-31 | A kind of extrusion coating machine die head pad, extrusion die and extrusion coating machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106216171A true CN106216171A (en) | 2016-12-14 |
Family
ID=58073662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610788741.XA Pending CN106216171A (en) | 2016-08-31 | 2016-08-31 | A kind of extrusion coating machine die head pad, extrusion die and extrusion coating machine |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978729A (en) * | 2017-11-21 | 2018-05-01 | 中航锂电（洛阳）有限公司 | The definite method of die head gasket chamfer dimesion and the die head gasket for realizing this method |
| CN108480138A (en) * | 2018-05-29 | 2018-09-04 | 安徽力信能源科技有限责任公司 | It is a kind of to be coated with uniform extrusion coating machine die head gasket and die head |
| CN108772256A (en) * | 2018-06-21 | 2018-11-09 | 桑顿新能源科技有限公司 | A kind of extrusion coated gasket and extrusion coating machine |
| CN109107829A (en) * | 2018-09-26 | 2019-01-01 | 深圳市曼恩斯特科技有限公司 | Coating die head and coating machine |
| CN109585782A (en) * | 2018-10-16 | 2019-04-05 | 中航锂电（洛阳）有限公司 | Method that is a kind of while producing Multiple Type electrodes of lithium-ion batteries and extrusion coated device |
| CN111420846A (en) * | 2019-04-30 | 2020-07-17 | 江西鸿格科技有限公司 | Precision extrusion die head of coating machine |
| CN112044680A (en) * | 2020-08-31 | 2020-12-08 | 天能帅福得能源股份有限公司 | Manufacturing method of coating gasket with uniform coating density |
| CN112635704A (en) * | 2020-12-28 | 2021-04-09 | 蜂巢能源科技有限公司 | Pole piece and pole piece coating method |
| CN113130839A (en) * | 2021-04-13 | 2021-07-16 | 中航锂电科技有限公司 | Preparation method of battery pole piece, die head gasket and battery |
| CN108480138B (en) * | 2018-05-29 | 2024-06-21 | 利信(江苏)能源科技有限责任公司 | Extrusion coating machine die head gasket and die head with uniform coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107978729B (en) * | 2017-11-21 | 2020-04-10 | 中航锂电（洛阳）有限公司 | Method for determining chamfer size of die head gasket and die head gasket for realizing method |
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| CN108480138A (en) * | 2018-05-29 | 2018-09-04 | 安徽力信能源科技有限责任公司 | It is a kind of to be coated with uniform extrusion coating machine die head gasket and die head |
| CN108480138B (en) * | 2018-05-29 | 2024-06-21 | 利信(江苏)能源科技有限责任公司 | Extrusion coating machine die head gasket and die head with uniform coating |
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| CN109585782B (en) * | 2018-10-16 | 2022-05-24 | 中创新航科技股份有限公司 | Method for simultaneously producing multiple types of lithium ion battery pole pieces and extrusion coating device |
| CN109585782A (en) * | 2018-10-16 | 2019-04-05 | 中航锂电（洛阳）有限公司 | Method that is a kind of while producing Multiple Type electrodes of lithium-ion batteries and extrusion coated device |
| CN111420846A (en) * | 2019-04-30 | 2020-07-17 | 江西鸿格科技有限公司 | Precision extrusion die head of coating machine |
| CN112044680A (en) * | 2020-08-31 | 2020-12-08 | 天能帅福得能源股份有限公司 | Manufacturing method of coating gasket with uniform coating density |
| CN112635704A (en) * | 2020-12-28 | 2021-04-09 | 蜂巢能源科技有限公司 | Pole piece and pole piece coating method |
| CN113130839A (en) * | 2021-04-13 | 2021-07-16 | 中航锂电科技有限公司 | Preparation method of battery pole piece, die head gasket and battery |
| CN113130839B (en) * | 2021-04-13 | 2022-05-10 | 中创新航科技股份有限公司 | Preparation method of battery pole piece, die head gasket and battery |
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Application publication date: 20161214 |