CN220177383U - Flow homogenizing fine adjustment structure for coating die head - Google Patents

Flow homogenizing fine adjustment structure for coating die head Download PDF

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Publication number
CN220177383U
CN220177383U CN202321653288.3U CN202321653288U CN220177383U CN 220177383 U CN220177383 U CN 220177383U CN 202321653288 U CN202321653288 U CN 202321653288U CN 220177383 U CN220177383 U CN 220177383U
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China
Prior art keywords
adjusting block
threaded
block
die head
coating die
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Active
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CN202321653288.3U
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Chinese (zh)
Inventor
王俊勇
王亚玮
曹计红
周立森
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Xingtai Hai Yu Lithium Battery Equipment Ltd
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Xingtai Hai Yu Lithium Battery Equipment Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model discloses a flow homogenizing fine-tuning structure for a coating die head, which comprises an adjusting block fixedly arranged in a groove of an upper die head, wherein a plurality of threaded pieces are fixedly arranged on the adjusting block along the length direction of the adjusting block, and the height direction of each threaded piece is perpendicular to the length direction of the adjusting block; the threaded ends of the threaded pieces respectively penetrate through the through holes of the upper die head and then are in threaded connection with the micrometer knobs, and the deformation positions of the adjusting blocks are steps in smooth transition states. The utility model forms smooth transition steps at the deformation positions of the regulating blocks, so that the slurry flow at each position is uniform, and the consistency of the density of the coating surface is ensured; the debugging time is shortened, the production efficiency is improved, and the waste of slurry caused by debugging is reduced; the utility model is applicable to the battery coating industry for uniformly coating the slurry on the current collector.

Description

Flow homogenizing fine adjustment structure for coating die head
Technical Field
The utility model relates to the field of coating equipment, in particular to a flow homogenizing fine-tuning structure used in a coating die head.
Background
The lithium battery coating process is an important process section for producing a lithium battery, and aims to uniformly coat and adhere paste in a pasty and molten state on a current collector, and form a lithium battery pole piece after rolling. In the coating process, the sizing agent is uniformly and stably coated on the current collector so as to ensure the consistency of the surface density of the pole piece after coating and rolling. Otherwise, taking positive electrode coating as an example, if the density of the positive electrode coating surface is too small, the positive electrode material on the electrode plate is too thin, so that the energy density and the power density on the battery are reduced; if the density of the coating surface of the positive electrode is too high, the positive electrode material on the electrode plate is too thick, so that the internal resistance of the battery is increased, and the performance and the service life of the battery are also affected. The consistency of the coating surface density mainly depends on the flow speed and the flow rate of the slurry, so that the uniformity of the flow speed and the flow rate of the slurry is important.
In the conventional coating method, a single-layer die is usually used for slot extrusion coating, and as shown in fig. 1, the single-layer die has a structure including a feed inlet 5, a slot coating port 4, an upper die 1, a lower die 2, and a gasket 3 installed between the upper die 1 and the lower die 2. In the coating process, the slurry flowing out of the slit coating opening 4 tends to have the conditions of high flow rate in the middle and low flow rates at the two sides, and in order to control the discharging speed and the uniformity of the flow rate of the die head, a micro-adjusting device is arranged on the coating die head so as to ensure that the coating die head is suitable for different fluid media, stripe numbers and coating widths. At present, a micrometer is commonly used for adjusting the shape of a runner by matching with a split type base block 7, as shown in fig. 2-4, the micrometer is fixedly arranged on an upper die, a nut is arranged in a micrometer knob 6, the split type base block 7 is fixedly arranged in a straight groove of the upper die 1, a plurality of studs 11 are integrally arranged on the split type base block 7, and threaded ends of the plurality of studs 11 respectively penetrate through a plurality of through holes of the upper die 1 and are in threaded connection with the plurality of micrometer knobs 6; the split base blocks 7 are made of rigid metal materials, and the contact side surfaces of two adjacent split base blocks 7 are in a rough state, so that sealing is realized in a tight leaning mode. The screw bolt 11 moves up and down by rotating the micrometer knob 6, so that the split type base block 7 moves up and down to cut off slurry in the flow channel, and then the flow transverse distribution is regulated.
However, when a certain split base block 7 is independently adjusted in this way, a significant height difference is formed between the adjusted split base block 7 and an adjacent split base block 7, a step appears, and when slurry passes through the step, a flow mutation in the area range is caused, which can disturb the stability of the flow field at the adjustment position, as shown in fig. 5. Even though the adjacent micrometer knobs 6 are adjusted to reduce the height difference between steps, the manual adjustment is required for the operator for several times, so that the skill requirement on the operator is high and the time is wasted.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model aims to provide a flow homogenizing fine adjustment structure for a coating die head, when a micrometer knob is adjusted, a deformation part of an adjusting block in threaded connection with the micrometer knob automatically forms a smooth transition step so as to homogenize the flow of each part of a slurry flow channel and ensure the consistency of the density of a coating surface; and the operator is not required to manually debug adjacent micrometer knobs for a plurality of times, so that the debugging time is shortened, and the production efficiency is improved.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the flow homogenizing fine-tuning structure for the coating die head comprises an adjusting block fixedly arranged in a groove of the upper die head, wherein a plurality of threaded pieces are fixedly arranged on the adjusting block along the length direction of the adjusting block, and the height direction of each threaded piece is perpendicular to the length direction of the adjusting block; the threaded ends of the threaded pieces respectively penetrate through the through holes of the upper die head and then are in threaded connection with the micrometer knobs, and the deformation positions of the adjusting blocks are steps in smooth transition states.
As a limitation of the present utility model: the adjusting block is an integral base block, the integral base block is made of flexible materials, and a plurality of threaded pieces are fixedly arranged in the integral base block at intervals.
As another definition of the utility model: the adjusting block comprises a plurality of split type base blocks which are arranged in a straight line, and any two adjacent split type base blocks are connected through flexible materials; each split base block is fixedly provided with a threaded piece.
As another definition of the utility model: the screw thread pieces are integrally arranged in the adjusting block.
As a further limitation of the utility model: the screw thread piece is a stud, one end of the stud extends out of the adjusting block, and the extending end of the stud is in threaded connection with the micrometer knob.
As a further limitation of the utility model: the screw thread piece is of an inverted T-shaped structure, and comprises a transverse table and an upright post with external threads, wherein the transverse table is completely arranged in the adjusting block, the upright post extends out of the adjusting block, and the extending end of the upright post is in threaded connection with the micrometer knob.
As a further limitation of the utility model: the screw thread piece is the bolt, and the bolt head sets up in the regulating block completely, and the screw rod stretches out in the regulating block, and the end and micrometer knob threaded connection that stretch out of screw rod.
By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects:
(1) The utility model relates to an improvement on a micro-adjusting device in the prior art, which comprises an adjusting block, wherein a plurality of threaded pieces are fixedly arranged on the adjusting block, the threaded ends of the plurality of threaded pieces are respectively in threaded connection with a plurality of micrometer knobs, and the adjusting block has two structures: 1. the adjusting block is an integral base block, the whole body is made of flexible materials, when the micrometer knob is adjusted, the integral base block in threaded connection with the micrometer knob moves up and down, at the moment, the deformation part of the integral base block automatically forms a smooth transition step, the phenomenon that an obvious height difference is generated between the adjusted split base block and the adjacent split base block in the prior art is avoided, the flow of slurry suddenly changes when the slurry passes through the area, the problem of flow field stability at the adjusting position is further damaged, and the consistency of the coating surface density is ensured; the operator does not need to manually debug a plurality of micrometer knobs for a plurality of times, so that the debugging time is shortened, the debugging difficulty is simplified, the production efficiency is improved, and the waste of slurry caused by debugging is reduced; 2. the adjusting blocks are a plurality of split type base blocks, and any two adjacent split type base blocks are connected through flexible materials; when the micrometer knob is screwed, the split type basic blocks in threaded connection with the micrometer knob move downwards, at the moment, flexible materials at two sides of the split type basic blocks deform, so that smooth transition steps are formed between the adjusted split type basic blocks and adjacent split type basic blocks, abrupt change of flow is prevented, and flow field stability at the adjusting position is guaranteed.
(2) The screw thread piece is of an inverted T-shaped structure and comprises a transverse table and an upright post, wherein the transverse table is completely arranged in the adjusting block, and the screw thread end of the upright post extends out of the adjusting block and is in screw thread connection with a micrometer knob; compared with the studs, the structure of the transverse table increases the blocking area of the adjusting block on the studs, so that the threaded piece of the inverted T-shaped structure can be firmly fixed in the adjusting block, looseness caused by the fact that gaps appear between the studs and the adjusting block due to the increase of the use times is avoided, and when the micrometer knob is adjusted, the studs can rotate in the adjusting block and cannot move up and down.
In summary, the utility model forms smooth transition steps at the deformation positions of the adjusting blocks, so that the slurry flow at each position is homogenized, and the consistency of the density of the coating surface is ensured; the debugging time is shortened, the production efficiency is improved, and the waste of slurry caused by debugging is reduced; the utility model is applicable to the battery coating industry for uniformly coating the slurry on the current collector.
Drawings
The utility model will be described in more detail below with reference to the accompanying drawings and specific examples.
FIG. 1 is a schematic diagram of a prior art coating die;
FIG. 2 is an exploded view of a portion of a prior art coating die with respect to a trim structure;
FIG. 3 is an internal schematic view of a trim structure portion of a conventional coating die;
FIG. 4 is an enlarged schematic view of portion B of FIG. 3;
FIG. 5 is a schematic view of the structure of a slurry channel when a split-type base block is adjusted downward in the prior art;
FIG. 6 is a schematic structural diagram of embodiment 1 of the present utility model;
FIG. 7 is a schematic diagram of an assembly of a single layer die with trim structure;
FIG. 8 is a schematic diagram of the structure of an integrated base block and inverted "T" stud;
FIG. 9 is a schematic view of the structure of the slurry flow path when the integrated base block is adjusted downward;
fig. 10 is an assembly schematic diagram of a fine tuning structure according to embodiment 2 of the present utility model.
In the figure: the device comprises a 1-upper die head, a 2-lower die head, a 3-gasket, a 4-slit coating port, a 5-feed port, a 6-micrometer knob, a 7-split base block, an 8-slurry flow passage, a 9-inverted T-shaped screw thread piece, a 91-transverse platform, a 92-upright post, a 10-integrated base block and an 11-stud.
Detailed Description
Preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood that a flow homogenizing fine tuning structure for use in a coating die as described herein is a preferred embodiment and is merely illustrative and explanatory of the utility model and is not intended to be limiting of the utility model.
The terms or positional relationships of "upper", "lower", "left", "right" and the like in the embodiments are based on the positional relationships of fig. 7 in the drawings of the present specification, and are merely for convenience of describing the present utility model and simplifying the description, and are not intended to indicate or imply that the apparatus or element must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the protection of the present utility model.
Example 1A flow homogenizing Fine adjustment Structure for use in coating die
As shown in fig. 6 to 9, the embodiment comprises an adjusting block fixedly arranged in a groove of the upper die head 1, wherein a plurality of screw members are fixedly arranged on the adjusting block, and the height direction of the screw members is perpendicular to the length direction of the adjusting block; the threaded ends of the threaded pieces respectively penetrate through the through holes of the upper die head 1 and then are in threaded connection with the micrometer knobs 6, and the deformation positions of the adjusting blocks are steps in a smooth transition state. When the micrometer knob 6 is adjusted to enable the adjusting block in threaded connection with the micrometer knob to move up and down, a smooth transition step is automatically formed at the deformation position of the adjusting block, so that the stability of a flow field at the adjusting position is ensured, and the consistency of the density of the coating surface is further ensured. The height directions mentioned in this embodiment refer to the up and down directions in fig. 7, and the length directions refer to the left and right directions in fig. 7. The deformation part in the embodiment refers to a deformation area of an adjusting block in threaded connection with the micrometer knob 6 when the micrometer knob is adjusted.
Specifically, as shown in fig. 6 and 7, in the present embodiment, the adjusting block is an integral base block 10, and the whole body is made of flexible material, and it should be noted that the upper die head 1 is provided with a "one" groove, and the integral base block 10 is located in the "one" groove, so as to achieve fixation of the integral base block 10 and the upper die head 1, and because this part is the prior art, the detailed description in this embodiment is omitted. The integral base block 10 is of a cuboid structure, and two corners of the integral base block facing the lower die head 2 are rounded corners for being matched with the lower die head 2; the flexible material herein refers to a material having softness and flexibility, and having functions of bending, torsion and deformation, and the integral base block 10 in this embodiment is made of a liquid silicone material, and may be replaced by polyurethane, polyethylene or other flexible materials.
As shown in fig. 8, a plurality of threaded members are disposed in the integral base block 10 at intervals, in this embodiment, the threaded members are inverted "T" shaped threaded members 9, and include a transverse table 91 and an upright post 92 with external threads, where the transverse table 91 is completely disposed in the integral base block 10, the upright post 92 with external threads extends out of the integral base block 10, and at this time, the extending end of the upright post 92 is a threaded end for being in threaded connection with the micrometer knob 6. In fig. 7, the broken line indicates the center line, and the line segment is indicated by the broken line because the line segment is not completely displayed after the center line is selected; in addition, the post 92 of the inverted "T" shaped screw 9 is provided with external threads, and the external threads are not shown in the figure in order to more clearly show the structure of the portion because the space around the inverted "T" shaped screw 9 is small in the figure, and the external threads are not conveniently marked.
In this embodiment, the inverted "T" shaped screw member 9 and the integral base block 10 are integrally molded, that is, the inverted "T" shaped screw member 9 is placed in a mold, then the liquid silica gel is cast into the mold, and after cooling and solidifying, the inverted "T" shaped screw member 9 and the integral base block 10 form an integral structure.
Because the micrometer is fixedly arranged on the upper die head 1, the micrometer knob 6 is in threaded connection with the inverted T-shaped threaded piece 9, and the inverted T-shaped threaded piece 9 is arranged on the integrated base block 10, when the micrometer knob 6 is screwed, the micrometer knob 6 rotates, and the integrated base block 10 is clamped in the upper die head 1, so that the inverted T-shaped threaded piece 9 and the integrated base block 10 cannot rotate along with the micrometer knob 6, but move up and down together under the cooperation of threads; when the integral base block 10 at the adjusting position moves up and down, as the integral base block 10 is made of flexible materials, the periphery of the integral base block 10 at the adjusting position can also move up and down to different degrees, so that smooth transition steps are formed, the smooth transition steps have the intercepting effect on the flow, the flow is not suddenly changed, the slurry flow is homogenized, the consistency of the coating surface density is ensured, and the smooth transition steps in the embodiment are relative to the steps with obvious height differences in the prior art, and form smooth continuous slopes. The connection modes among the micrometer knob 6, the upper die head 1, the stud and the integrated base block 10 are the prior art, and are not described in detail in the embodiment.
It should be noted that, in this embodiment, the connection between the inverted "T" shaped screw 9 and the integral base block 10 may be achieved by another way, for example, the inverted "T" shaped screw 9 is placed on the upper surface of the integral base block 10, the inverted "T" shaped screw 9 is heated by induction heating, and then the "T" shaped screw 9 is pressed down, so as to fix the inverted "T" shaped screw 9 and the integral base block 10, which is described in the patent application of the utility model with publication No. CN113752572 a.
Of course, the screw member may be a bolt, a stud or other screw members, and when the screw member is a bolt, the bolt head is completely disposed in the integral base block 10, and the threaded rod with external threads extends out of the integral base block 10, and at this time, the extending end of the threaded rod is a threaded end for threaded connection with the micrometer knob 6.
When the embodiment is used, in the coating process, when the condition that the middle flow is high and the flows on two sides are low occurs, the integral base block 10 at the middle position needs to be adjusted downwards, the micrometer knob 6 is screwed at the moment, the inverted T-shaped threaded piece 9 in threaded connection with the micrometer knob 6 and the integral base block 10 move downwards simultaneously, and the integral base block 10 is made of flexible materials, so that a smooth transition step is formed at the deformation position of the integral base block 10, and the structure not only narrows the slurry flow channel 8 at the middle position, reduces the slurry flow of the middle position, homogenizes the flows at all positions, ensures the consistency of the coating surface density, but also ensures the flow to have abrupt change and the flow field stability at the adjusting position.
Example 2A flow homogenizing Fine adjustment Structure for use in coating die
As shown in fig. 10, the structure of this embodiment is basically the same as that of embodiment 1, except that the adjusting block includes a plurality of split-type base blocks 7, the material thereof is a rigid metal material, each split-type base block 7 has a rectangular solid structure as a whole, and two corners of each split-type base block 7 facing the lower die head 2 are rounded corners; the split base blocks 7 are arranged in a straight line, any two adjacent split base blocks 7 are connected through flexible materials, and in the embodiment, the flexible materials are liquid silica gel materials; the liquid silica gel material is adhered with the split type base block 7 through glue, and the glue needs to meet certain conditions: the glue can be used as long as the glue can firmly bond the liquid silica gel material and the split type base block 7, and the glue does not react with the slurry, is corrosion-resistant and cannot contain active metals such as zinc, copper and the like; an inverted T-shaped threaded piece 9 is fixedly arranged on each split base block 7 and is used for being in threaded connection with the micrometer knob 6; the "in-line" arrangement in this embodiment means that the longitudinal direction of each split base block 7 is set along the longitudinal direction of the lower die head 2, where the longitudinal direction means the left and right directions. The other structures are identical to those of embodiment 1, and detailed description thereof is omitted in this embodiment.
When the flow of the middle position is required to be reduced, the micrometer knob 6 is screwed, the inverted T-shaped threaded piece 9 in threaded connection with the micrometer knob 6 and the split type base block 7 move downwards simultaneously, at the moment, flexible materials on two sides of the split type base block 7 deform, smooth transition steps are formed between the adjusted split type base block 7 and the adjacent split type base block 7, the slurry flow channel at the middle position is narrowed, the slurry flow of the middle position is reduced, the flow of each position is homogenized, the height difference between the adjacent steps is slowed down, abrupt change of the flow is avoided, and the flow field stability at the adjusting position is ensured.
It should be noted that the foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but the present utility model is described in detail with reference to the foregoing embodiment, and it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. The flow homogenizing fine-tuning structure for the coating die head comprises an adjusting block fixedly arranged in a groove of the upper die head, wherein a plurality of threaded pieces are fixedly arranged on the adjusting block along the length direction of the adjusting block, and the height direction of each threaded piece is perpendicular to the length direction of the adjusting block; the screw thread end of a plurality of screw thread spare pass a plurality of via hole back and a plurality of micrometer knob threaded connection of last die head respectively, its characterized in that: the deformation of the adjusting block is a step with a smooth transition state.
2. A flow homogenizing fine tuning structure for use in a coating die as in claim 1, wherein: the adjusting block is an integral base block, the integral base block is made of flexible materials, and a plurality of threaded pieces are fixedly arranged in the integral base block at intervals.
3. A flow homogenizing fine tuning structure for use in a coating die as in claim 1, wherein: the adjusting block comprises a plurality of split type base blocks which are arranged in a straight line, and any two adjacent split type base blocks are connected through flexible materials; each split base block is fixedly provided with a threaded piece.
4. A flow homogenizing fine adjustment structure for use in a coating die according to any one of claims 1 to 3, wherein: the screw thread pieces are integrally arranged in the adjusting block.
5. A flow homogenizing fine tuning structure for use in a coating die as in claim 4, wherein: the screw thread piece is a stud, one end of the stud extends out of the adjusting block, and the extending end of the stud is in threaded connection with the micrometer knob.
6. A flow homogenizing fine tuning structure for use in a coating die as in claim 4, wherein: the screw thread piece is of an inverted T-shaped structure, and comprises a transverse table and an upright post with external threads, wherein the transverse table is completely arranged in the adjusting block, the upright post extends out of the adjusting block, and the extending end of the upright post is in threaded connection with the micrometer knob.
7. A flow homogenizing fine tuning structure for use in a coating die as in claim 4, wherein: the screw thread piece is the bolt, and the bolt head sets up in the regulating block completely, and the screw rod stretches out in the regulating block, and the end and micrometer knob threaded connection that stretch out of screw rod.
CN202321653288.3U 2023-06-28 2023-06-28 Flow homogenizing fine adjustment structure for coating die head Active CN220177383U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321653288.3U CN220177383U (en) 2023-06-28 2023-06-28 Flow homogenizing fine adjustment structure for coating die head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321653288.3U CN220177383U (en) 2023-06-28 2023-06-28 Flow homogenizing fine adjustment structure for coating die head

Publications (1)

Publication Number Publication Date
CN220177383U true CN220177383U (en) 2023-12-15

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Family Applications (1)

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CN202321653288.3U Active CN220177383U (en) 2023-06-28 2023-06-28 Flow homogenizing fine adjustment structure for coating die head

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