CN201586615U - Multi-pressure-cavity adjustable clearance type extrusion head - Google Patents
Multi-pressure-cavity adjustable clearance type extrusion head Download PDFInfo
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- CN201586615U CN201586615U CN2010201064898U CN201020106489U CN201586615U CN 201586615 U CN201586615 U CN 201586615U CN 2010201064898 U CN2010201064898 U CN 2010201064898U CN 201020106489 U CN201020106489 U CN 201020106489U CN 201586615 U CN201586615 U CN 201586615U
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Abstract
A multi-pressure-cavity adjustable clearance type extrusion head is a part of an extrusion type coater of a lithium ion power cell apparatus. The slurry pressure of a single pressure cavity is difficult to control, clearance sensitivity is low, such that the quality of the clearance head and tail is affected, small distance clearance is difficult to implement, extrusion coating head needs to be replaced for different products, thus cost and operating time are all increased. The multi-pressure-cavity adjustable clearance type extrusion head includes an extrusion head lower lip, an extrusion head upper lip, a clearance packing sheet, a sealing cover and fastening bolts, and is characterized in that the extrusion coating head employs a plurality of pressure cavities. The clearance size may be adjusted by adjusting the thickness of the clearance packing sheet, such that it is possible to resolve problems of difficult pressure control, low precision, hard small clearance coating and bad extrusion head adaptability, and the coating quality is improved.
Description
Technical field
The present invention relates to a kind of lithium battery manufacturing equipment extrusion coating machine, especially a kind of adjustable clearance type extrusion head with multiple pressure chambers.
Background technology
Coating is a requisite operation in the lithium ion battery production process, also is the critical process that directly influences every performances such as battery security, capacity, uniformity.Coating is exactly the pasty state viscous paste of making, and uniformly, continuously or being coated on the matrix (aluminium foil or Copper Foil) of being interrupted, guarantees the consistency of thickness of each coating position and coating thickness is controlled in the margin of tolerance of technological requirement.The present domestic two kinds of coating methods that have: transfer type and squash type.Transfer type is a kind of mature technique, but its complex structure, the equipment debugging trouble; Because the slurry of transfer type coating machine is in naked state, therefore slurry is had certain influence to performance, the time slightly length will produce caking, can't apply.
By experiment, the extrusion coater technology is increasingly mature, and its frame for movement is simple, and device miniaturization is saved the space, and debugging is convenient; Its coating extrusion head partly is closed, and slurry all is hedged off from the outer world between applying, and therefore can not make slurry rotten because of the reason of air.
The coating precision of extrusion coater is more high than transfer type coating machine.Present experimental result shows that the transfer type coating thickness limit is 50 μ m, and the squash type coating can reach 20 μ m, and is stronger to the adaptability of lithium battery technology.
All the time, the dispense tip that extrusion coater adopted all is single pressure cavity formula.Single pressure cavity is unfavorable for the balance of slurry pressure in the extrusion head cavity; In addition,, cause slurry to extrude required pressure and increase, increased the control difficulty of slurry pressure because pressure chamber is oversize from the distance (being balanced surface) of extrusion mouth.When the extrusion coated of gap, because the oversize extrusion pressure that causes of balanced surface has hindered the slurry feeding speed, cause the gap sensitivity of gap coating to reduce, influence the quality of gap head, tail, cause the small distance gap to be difficult to realize.
In addition, the present extrusion head that uses, the gap of extruding of its extrusion nozzle is to produce by the step of processing on the extrusion head lower lip, a secondary extrusion head that processes, it extrudes the i.e. machine-shaping thereupon in gap, can not change.The slurry of variable grain degree and viscosity, to the requirement of extruding the gap is different fully, like this then can only change different extrusion coated heads, causes the adaptation of product of extrusion coated head low, increase the cost of coating machine, changed the also increase greatly of spent time of product type simultaneously.
Summary of the invention
Development purpose of the present invention is to capture the prior art bottleneck, and a kind of adjustable clearance type extrusion head with multiple pressure chambers is provided, improve the coating quality of extrusion coating machine and to the lithium ion battery manufacturing process to extensive adaptability.
A kind of adjustable clearance type extrusion head with multiple pressure chambers of the present invention, comprise extrusion head lower lip, extrusion head upper lip, gap pad, seal cover, fastening bolt, it is characterized in that: described multiple pressure chambers formula extrusion coated head adopts a plurality of (illustrating three) pressure chamber.
The gap of extruding of described adjustable clearance type extrusion head with multiple pressure chambers extrusion nozzle adopts the gap pad to realize, gap length can be realized by the thickness of adjusting play pad.
Beneficial effect of the present invention is: adopt adjustable clearance type extrusion head with multiple pressure chambers, solved that extrusion coating machine coating pressure control difficulty is big, not high, the problem that can not realize the coating of little gap, extrusion head adaptation of product difference of precision during the coating of gap, improve the coating quality of extrusion coating machine and to the lithium ion battery manufacturing process to extensive adaptability.
Description of drawings
Fig. 1 is the extrusion head structure schematic diagram of existing extrusion coating machine;
Fig. 2 is the perspective view of adjustable clearance type extrusion head with multiple pressure chambers of the present invention;
Fig. 3 is the schematic internal view of adjustable clearance type extrusion head with multiple pressure chambers of the present invention;
Among the figure: 01: the extrusion head lower lip; 02: the extrusion head upper lip; 03: seal cover; 04: fastening bolt; 05: the gap pad; The 06:A pressure chamber; The 07:B pressure chamber; The 08:C pressure chamber; 09: balanced surface; 10: charging aperture; 11: extrusion nozzle.
The specific embodiment
Embodiment:
Shown in Fig. 2,3: a kind of adjustable clearance type extrusion head with multiple pressure chambers of the present invention, comprise extrusion head lower lip 01, extrusion head upper lip 02, seal cover 03, fastening bolt 04, gap pad 05, it is characterized in that: three pressure chambers 06,07,08 are arranged on the balanced surface 07 of described extrusion head lower lip 01, coating sizing-agent enters A pressure chamber 06 through charging aperture 10, latter two pressure chamber 07,08 of flowing through again arrives extrusion nozzle 11 through balanced surface 09 again.
Coating sizing-agent enters A pressure chamber 06 through charging aperture 10, after slurry is full of A pressure chamber 06, can flow into B pressure chamber 07 comparatively uniformly along A pressure chamber 06 edge, and experiment test proves that the slurry pressure uniformity of B pressure chamber is than A pressure chamber height at this moment; After slurry is full of B pressure chamber 07, can flow into C pressure chamber 08 uniformly along B pressure chamber 07 edge, experiment test proves that the slurry pressure uniformity of C pressure chamber is than B pressure chamber height at this moment, and the uniformity of the slurry of C pressure chamber is very consistent, satisfies the coating requirement fully.After slurry was full of C pressure chamber 08, meeting be injected balanced surface 09 uniformly along C pressure chamber 08 edge, and arrived extrusion nozzle 11, was evenly extruded by extrusion nozzle 11 to be coated on the matrix.
A gap pad is arranged between described extrusion head lower lip 01 and the extrusion head upper lip 02, and the gap pad can be changed according to the variation of coating process.When changing the gap pad, only need take off extrusion head upper lip 02, take out original gap pad, again the gap pad of suitable thickness be packed into, load onto extrusion head upper lip 02 again and get final product.
The present invention adopts adjustable clearance type extrusion head with multiple pressure chambers, solved that extrusion coating machine coating pressure control difficulty is big, not high, the problem that can not realize the coating of little gap, extrusion head adaptation of product difference of precision during the coating of gap, improve the coating quality of extrusion coating machine and to the lithium ion battery manufacturing process to extensive adaptability.
Claims (1)
1. an adjustable clearance type extrusion head with multiple pressure chambers comprises extrusion head lower lip, extrusion head upper lip, gap pad, seal cover, fastening bolt, it is characterized in that: described multiple pressure chambers formula extrusion coated head adopts a plurality of pressure chambers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201064898U CN201586615U (en) | 2010-01-23 | 2010-01-23 | Multi-pressure-cavity adjustable clearance type extrusion head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201064898U CN201586615U (en) | 2010-01-23 | 2010-01-23 | Multi-pressure-cavity adjustable clearance type extrusion head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201586615U true CN201586615U (en) | 2010-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201064898U Expired - Lifetime CN201586615U (en) | 2010-01-23 | 2010-01-23 | Multi-pressure-cavity adjustable clearance type extrusion head |
Country Status (1)
| Country | Link |
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| CN (1) | CN201586615U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013200568A1 (en) | 2013-01-16 | 2014-07-17 | Robert Bosch Gmbh | Device for coating film for electrodes of e.g. lithium ion battery cell with coating material for motor vehicle, has coating device to apply coating material simultaneously with different flow rates in different sections of film |
| CN104117464A (en) * | 2014-07-27 | 2014-10-29 | 深圳市信宇人科技有限公司 | Extrusion coating head with adjustable slurry flow rate |
| TWI496621B (en) * | 2010-10-26 | 2015-08-21 | Prologium Technology Co | Coating head and coating machine using the same |
| CN108511672A (en) * | 2017-02-24 | 2018-09-07 | 微宏动力系统（湖州）有限公司 | Extrusion coated die head |
-
2010
- 2010-01-23 CN CN2010201064898U patent/CN201586615U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI496621B (en) * | 2010-10-26 | 2015-08-21 | Prologium Technology Co | Coating head and coating machine using the same |
| DE102013200568A1 (en) | 2013-01-16 | 2014-07-17 | Robert Bosch Gmbh | Device for coating film for electrodes of e.g. lithium ion battery cell with coating material for motor vehicle, has coating device to apply coating material simultaneously with different flow rates in different sections of film |
| CN104117464A (en) * | 2014-07-27 | 2014-10-29 | 深圳市信宇人科技有限公司 | Extrusion coating head with adjustable slurry flow rate |
| CN108511672A (en) * | 2017-02-24 | 2018-09-07 | 微宏动力系统（湖州）有限公司 | Extrusion coated die head |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100922 |