CN213102969U - Slit extrusion die head with adjustable coating gap - Google Patents
Slit extrusion die head with adjustable coating gap Download PDFInfo
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- CN213102969U CN213102969U CN202021513449.5U CN202021513449U CN213102969U CN 213102969 U CN213102969 U CN 213102969U CN 202021513449 U CN202021513449 U CN 202021513449U CN 213102969 U CN213102969 U CN 213102969U
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Abstract
The utility model discloses a slit extrusion die with adjustable coating clearance. The die head comprises an upper die head and a lower die head, wherein a slit between the upper die head and the front end of the lower die head forms a slit coating opening; a gap adjusting mechanism is arranged on the upper die head; the gap adjusting mechanism comprises an adjusting rod; one end of the adjusting rod is connected with the upper die lip, and the other end of the adjusting rod penetrates out of the upper die head; the adjusting rod can drive the upper die lip to be vertically far away from or close to the lower die lip; an adjusting cavity is formed in the upper die head; the adjusting cavity is a through hole with a closed curve section; when the adjusting rod drives the upper die lip to be far away from or close to the lower die lip up and down, the adjusting cavity is stressed and deforms. The die head adopts the gap adjusting mechanism to adjust the coating gap so as to reduce the fluctuation of the surface density of the coating, improve the precision and consistency of the thickness of the coating, and can improve the service life of the die head by matching with the adjusting cavity with a closed curve shape.
Description
Technical Field
The utility model relates to a coating equipment technical field, concretely relates to slit extrusion die with adjustable coating clearance.
Background
Coating is a process of coating a paste-like, molten-state slurry onto a substrate and forming a functional thin film on the surface of the substrate. Particularly, in the production process of the lithium battery pole piece, slurry needs to be coated on the pole piece substrate. The coating quality of the positive and negative pole pieces of the lithium battery directly determines the core performance and safety of the lithium battery, and the surface density fluctuation size and the thickness precision of the coating are the most recognized detection standards in the industry at present.
In the pole piece coating process, the coating die head is used as the only part for coating the slurry on the pole piece, the performance of the coating die head directly determines the coating effect, but the slurry with different specifications and even the slurry in different batches have obvious differences in flowability, viscosity and the like, so that one die head is difficult to be compatible with the coating of various slurries, and various die heads need to be replaced. The cost is increased, the production efficiency is reduced, and the change of the temperature and environmental factors of the same batch of slurry in the coating process can cause the change of the slurry performance, so that the surface density fluctuation of the coated coating is large, and the consistency of the coating thickness is poor.
The coating gap is one of the main factors influencing the uniformity, the transverse thickness consistency and the precision of the coated surface density, and the coating gap is adjusted by opening a notch on the existing coating die head so as to keep the consistency of the surface density and the coating thickness of the coating when different sizing agents or the same sizing agent are coated under the environmental conditions of different temperatures and the like. However, the method can greatly reduce the bending strength of the die head, increase the deformation of the die head and greatly shorten the service life of the die head.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a slit extrusion die with adjustable coating clearance to the defect or not enough that exist among the prior art. The die head adopts the gap adjusting mechanism to adjust the coating gap so as to reduce the fluctuation of the surface density of the coating, improve the precision and consistency of the thickness of the coating, and can improve the service life of the die head by matching with the adjusting cavity with a closed curve shape.
The purpose of the utility model is realized through the following technical scheme.
A slot extrusion die head with an adjustable coating gap comprises an upper die head and a lower die head, wherein the front end of the upper die head is provided with an upper die lip, and the front end of the lower die head is provided with a lower die lip corresponding to the upper die lip; a slit between the upper die lip and the lower die lip forms a slit coating opening; the rear end of the lower die head is provided with a feeding hole;
a gap adjusting mechanism is arranged on the upper die head; the gap adjusting mechanism comprises an adjusting rod; one end of the adjusting rod is connected with the upper die lip, and the other end of the adjusting rod penetrates out of the upper die head; the adjusting rod can drive the upper die lip to be vertically far away from or close to the lower die lip;
the adjusting cavity is positioned in the upper die head and close to the front end of the upper die head, and is formed in the coating width direction; the adjusting cavity is a through hole with a closed curve section; when the adjusting rod drives the upper die lip to be far away from or close to the lower die lip up and down, the adjusting cavity is stressed and deforms.
In a preferred embodiment, the regulating rod comprises a rod body arranged in the upper die head in a penetrating way; the part of the upper die head, which corresponds to the rod body of the adjusting rod and reaches the front end, is provided with an adjusting groove; one end of the rod body of the adjusting rod is connected with the upper die lip, and the other end of the rod body penetrates through the adjusting groove and penetrates out of the upper die head.
In a more preferred embodiment, the lower groove edge of the adjusting groove is provided with a connecting block connected with the upper die lip; the connecting block is provided with a through screw hole, one end of the rod body of the adjusting rod is in threaded connection with the screw hole on the connecting block, and the threaded connection meshing depth is adjustable along the rod body axial direction of the adjusting rod;
the rod body of the adjusting rod can freely rotate and penetrate out of the upper die head, and is clamped with the upper die head along the axial direction through the adjusting head; the adjusting head is fixedly connected with the rod body of the adjusting rod at least in the axial direction and can synchronously rotate in the rotating direction;
the adjusting head is rotated to drive the adjusting rod to rotate, the adjusting rod is adjusted to be in threaded connection with the connecting block, the connecting block is driven to move axially along the adjusting rod, and the upper die lip is far away from or close to the lower die lip.
In a further preferred embodiment, the connecting piece is an integrated structure on the groove edge of the adjusting groove.
In a further preferred embodiment, the upper die head is provided with a mounting seat; the rod body of the adjusting rod penetrates out of the upper die head, the other end of the adjusting rod can freely rotate to penetrate through the mounting seat, and the adjusting rod is axially clamped on the mounting seat through the adjusting head.
In a further preferred embodiment, the mounting has an adjustment scale thereon.
In a more preferred embodiment, the gap adjusting mechanism includes a plurality in the coating width direction; and the part of the upper die head, which corresponds to the space between two adjacent gap adjusting mechanisms, is an open through hole, and the through hole is communicated with the adjusting cavity and the adjusting groove.
In a preferred embodiment, the adjustment cavity comprises a through hole with an oval, gourd-shaped or circular cross section.
In a preferred embodiment, the adjusting cavity is a through hole with a gourd-shaped section.
In a preferred embodiment, a storage cavity is formed in the lower die head, and the feed inlet, the storage cavity and the slit coating port are sequentially communicated along a coating and feeding direction.
Compared with the prior art, the utility model has the advantages of as follows and beneficial effect:
the utility model discloses an in the die head, be provided with clearance adjustment mechanism on last die head, can order about through rotatory clearance adjustment mechanism's regulation pole during the coating operation and go up the die lip and be close to or keep away from die lip down to adjust the coating clearance, reduce coating surface density fluctuation, improve coating thickness precision and uniformity, satisfy different thick liquids or the coating demand of thick liquids of the same race under environmental conditions such as different temperatures, and adjust convenient operation swiftly.
In addition, an adjusting cavity is further formed in the upper die head, the cross section of the adjusting cavity is in a closed shape surrounded by curves, when the gap adjusting mechanism adjusts the coating gap, the adjusting cavity is stressed and deformed, and is matched with the gap adjusting mechanism to adjust the coating gap quickly and accurately, so that adjustability and adjusting precision are improved. And, the cross-section is the shape design of closed curve, for traditional division of opening the notch design, can make the bending strength of last die head in coating clearance adjustment process higher to improve the life of die head.
Drawings
FIG. 1 is a schematic perspective view of a slot extrusion die with adjustable coating gap according to an embodiment of the present invention;
FIG. 2 is a schematic front view of a slot extrusion die with adjustable coating gap according to an embodiment of the present invention;
FIG. 3 is a schematic top view of a slot extrusion die with adjustable coating gap according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view taken along A-A of FIG. 2;
FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 2;
FIG. 6 is an enlarged schematic view of portion I of FIG. 1;
FIG. 7 is a stress diagram of a coating gap adjustable slot extrusion die with a gourd-shaped section of an adjustment cavity during gap adjustment;
the attached drawings are marked as follows: 100-slit coating port, 1-upper die head, 10-upper die lip, 11-locking counter bore, 12-circular discharge port, 13-dismounting process threaded hole, 14-adjusting cavity, 15-adjusting groove, 16-through port, 2-lower die head, 20-lower die lip, 21-locking threaded hole, 22-feed port, 23-material storage cavity, 24-pressure stabilizing cavity, 25-dismounting process hole, 3-gasket, 4-gap adjusting mechanism, 41-adjusting rod, 42-connecting block, 420-screw hole, 43-mounting seat, 44-adjusting head, 5-connecting fixing block and 6-hinge.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the following specific embodiments and accompanying drawings, but the scope of protection and the implementation of the present invention are not limited thereto. In the description of the specific embodiments, it should be noted that the terms "upper", "lower", "front", "back", and the like refer to the orientation or position relationship shown in the drawings, or the orientation or position relationship that the utility model is used to put, and are used only for distinguishing the description, and are only used for convenience of describing the utility model and simplifying the description, but not for indicating or implying that the structure or the element that is referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the limitation of the utility model cannot be understood, and the indication or the implication of relative importance cannot be understood.
The slit extrusion die with the adjustable coating gap of the embodiment of the utility model is shown in figures 1-5 and comprises an upper die head 1 and a lower die head 2. The upper die head 1 is provided with a locking countersunk hole 11, the lower die head 2 is provided with a locking threaded hole 21 corresponding to the locking countersunk hole 11, and the locking countersunk hole 11 and the locking threaded hole 21 are fixedly connected through a fastening bolt to mutually lock the upper die head 1 and the lower die head 2. And, the rear ends of the upper die head 1 and the lower die head 2 are combined with the connecting fixing block 5 to be screwed and locked, so that the upper die head 1 and the lower die head 2 keep a stable relative position.
The rear ends of the upper die head 1 and the lower die head 2 are hinged through a hinge 6, and after the fastening bolt in the locking counter sink 11 and the connecting fixing block 5 are loosened, the upper die head 1 and the lower die head 2 can be hinged and turned over to replace internal parts and clean the inside of the die heads.
Wherein the front end of the upper die head 1 has an upper die lip 10, the front end of the lower die head 2 has a lower die lip 20 corresponding to the upper die lip 10, and a slit between the upper die lip 10 of the upper die head 1 and the lower die lip 20 of the lower die head 2 forms a slit coating opening 100. In the coating operation, the slurry is extruded from the slit coating opening 100 and coated.
Referring again to fig. 3, the upper die 1 also has a recycling outlet 12 for the circulation of the slurry. In addition, the upper die head 1 is also provided with a dismounting process threaded hole 13, and the lower die head 2 is provided with a dismounting process hole 25 corresponding to the dismounting process threaded hole 13, so that the upper die head 1 and the lower die head 2 can be conveniently locked and dismounted.
In an alternative embodiment, a shim 3 is sandwiched between the upper die 1 and the lower die 2, and the shim 3 has at least one coating opening thereon. Wherein the slit coating opening 100 is formed by a gap between the lower die lip 10 of the upper die 1, the coating opening of the shim 3, and the lower die lip 20 of the lower die 2.
Specifically, a feed inlet 22 is formed at the rear end of the lower die head 2, and the slurry for coating enters the die head through the feed inlet 22. A material storage cavity 23 and a pressure stabilizing cavity 24 are formed in the lower die head 2, as shown in fig. 4 and 5, the material storage cavity 23 and the pressure stabilizing cavity 24 are sequentially distributed along the coating feeding direction, in an alternative embodiment, the material storage cavity 23 and the pressure stabilizing cavity 24 are strip-shaped cavities with length directions along the left and right width directions, and the volume of the material storage cavity 23 is greater than that of the pressure stabilizing cavity 24. And, smooth transition is adopted between the adjacent surfaces of the storage cavity 23 and the pressure stabilizing cavity 24, so that dead angles can be effectively reduced, and the flow resistance of slurry flowing from the storage cavity 23 to the pressure stabilizing cavity 24 is reduced.
The material storage cavity 23 is communicated with the feed port 22, a first flow channel for communicating the material storage cavity 23 with the pressure stabilizing cavity 24 is arranged between the material storage cavity 23 and the pressure stabilizing cavity 24, and a second flow channel for communicating the pressure stabilizing cavity 24 with the slit coating port 100 is arranged between the pressure stabilizing cavity 24 and the slit coating port 100, so that the feed port 22, the material storage cavity 23, the pressure stabilizing cavity 24 and the slit coating port 100 are sequentially communicated along the coating feeding direction.
When coating operation is carried out, slurry enters the die head from the feed inlet 22 and flows into the storage cavity 23; after the material storage cavity 23 is full of materials, the inflowing slurry is subjected to pressure equalization through the first flow channel and then enters the pressure stabilizing cavity 24; after the pressure stabilizing cavity 24 is filled with the slurry, the slurry overflows to a second flow channel, and the slurry is uniformly coated in the width direction by the second flow channel and then is extruded out through a coating gap of the slit coating opening 100, so that coating is realized.
Furthermore, the utility model discloses among the slot extrusion die with adjustable coating clearance be provided with clearance adjustment mechanism 4 on the upper die head 1, can be used to adjust the coating clearance of slot coating mouth 100 to the flow of control coating reduces coating surface density fluctuation, improves coating thickness precision and uniformity, satisfies the coating demand of different thick liquids or the same kind of thick liquids under environmental conditions such as different temperatures.
The gap adjusting mechanism 4 comprises an adjusting rod 41, wherein one end of the adjusting rod 41 is connected with the upper die lip 10, and the other end of the adjusting rod 41 penetrates out of the upper die head 1. In the process of adjusting the coating gap, the upper die lip 10 can be driven by the adjusting rod 41 to move up and down away from or close to the lower die lip 20, so that the gap distance between the upper die lip 10 and the lower die lip 20 is changed, and the coating gap of the slit coating opening 100 is adjusted.
Specifically, the adjusting rod 41 includes a rod body inserted into the upper die 1. Moreover, the upper die head 1 is provided with an adjusting groove 15 from the shaft body of the adjusting rod 41 to the front end, so that the shaft body of the adjusting rod 41 is exposed. The lower side groove edge of the adjusting groove 15 and the upper die lip 10 are of an integral structure, one end of the rod body of the adjusting rod 41 is connected with the lower side groove edge of the adjusting groove 15, namely, connected with the upper die lip 10, specifically, in a threaded manner, and the other end of the rod body of the adjusting rod 41 penetrates through the adjusting groove 15 and penetrates out of the upper die head 1 and is axially clamped with the upper die head 1. Thus, two ends of the adjusting rod 41 are respectively connected with the upper and lower groove edges of the adjusting groove 15, and the upper and lower groove edges of the adjusting groove 15 on the upper die head 1 have elasticity capable of mutually compressing or stretching; when the adjusting rod 41 is rotated, the adjusting rod 41 can pull the upper die lip 10 to shrink upwards along the shaft axial direction of the adjusting rod 41 and press the upper die lip 10 to be far away from the lower die lip 20, or the upper die lip 10 is loosened downwards along the shaft axial direction of the adjusting rod 41 and approaches the lower die lip 20, so that the coating gap is adjusted.
In an alternative embodiment, the lower groove edge of the adjusting groove 15 is provided with a connecting block 42 connected with the upper die lip 10, and particularly optionally, the connecting block 42 is an integrated structure on the groove edge of the adjusting groove 15. The connecting block 42 is provided with a through screw hole 420, one end of the shaft 41 of the adjusting rod 41 is provided with external threads and is in threaded connection with the screw hole 420 on the connecting block 42, and the threaded engagement depth is adjustable along the axial direction of the shaft of the adjusting rod 41, so that the adjusting rod 41 can telescopically penetrate through the screw hole 420 in the threaded connection and rotation process. The rod body of the adjusting rod 41 can freely rotate and penetrate out of the upper die head 1, and is clamped with the upper die head 1 along the axial direction through an adjusting head 44. The adjustment head 44 is fixedly connected to the shaft of the adjustment lever 41 at least in the axial direction, and is rotatable in synchronization therewith. Therefore, the adjusting rod 41 is driven to rotate by rotating the adjusting head 44, the threaded engagement depth of the adjusting rod 41 and the connecting block 42 can be adjusted, the connecting block 42 is driven to axially displace along the adjusting rod 41, and the upper die lip 10 can be driven to move up and down away from or close to the lower die lip 20.
In actual operation, the adjusting head 44 is provided with a rotary adjusting part, which comprises an inner hexagonal groove or an outer hexagonal contour, and the adjusting head 44 can be easily adjusted to rotate by matching with an inner hexagonal wrench or an outer hexagonal wrench, so that the coating gap adjusting operation can be conveniently and rapidly performed. Or the adjusting head 44 is connected with a driving motor or an electric cylinder to realize the automatic driving rotation of the adjusting rod 41, thereby realizing the automatic adjustment of the gap.
In an alternative embodiment, the upper die head 1 is provided with a mounting seat 43. The shaft of the adjusting rod 41 penetrates out of the upper die head 1, and the other end of the adjusting rod freely and rotatably penetrates through the mounting seat 43, namely, the shaft of the adjusting rod 41 is in clearance fit with the mounting seat 43 and is clamped on the mounting seat 43 along the axial direction through the adjusting head 44, so that the shaft of the adjusting rod 41 is fixed relative to the mounting seat 43 in the axial direction. During the gap adjustment operation, in the rotation process of the adjusting rod 41, the adjusting rod 41 and the mounting seat 43 are relatively fixed in the axial direction, the connecting block 42 is engaged with the adjusting rod 41 in a depth change along with the rotation of the adjusting rod 41, the connecting block 42 moves up and down along the axial direction of the rod body of the adjusting rod 41 in a screw rod mode, and the upper die lip 10 is driven to move up and down synchronously, so that the gap distance between the upper die lip 10 and the lower die lip 20 is changed, and the coating gap is adjusted.
Moreover, optionally, an adjusting scale is arranged on the mounting seat 43, and the rotation angle of the adjusting rod 41 can be displayed, so that the adjustment degree of the coating gap can be indirectly and visually shown, and the precise adjustment of the coating gap can be realized.
Further, an adjusting cavity 14 is disposed in the upper die head 1 near the front end of the upper die head 1 and along the coating width direction. Specifically, the adjusting cavity 14 is a through hole with a closed curve section, and thin walls are respectively arranged between the bottom of the adjusting cavity 14 and the upper die lip 10 and between the front end of the adjusting cavity 14 and the front end face of the upper die head 1. When the adjusting rod 41 drives the upper die lip 10 to move up and down away from or close to the lower die lip 20, the adjusting cavity 14 is stressed and deformed so as to be matched with the gap adjusting mechanism 4 to perform quick and accurate coating gap adjustment, so that the adjustability and the adjusting precision are improved, and the service life of the upper die head 1 is prolonged.
Specifically, when the adjustment lever 41 of the gap adjustment mechanism 4 is operated to adjust the gap distance between the upper die lip 10 and the lower die lip 20 to adjust the coating gap of the slit coating port 100, a stress is generated between the upper end surface and the lower end surface of the front end of the upper die head 1 to adjust the gap distance between the upper die lip 10 and the lower die lip 20. At this moment, due to the existence of the adjusting cavity 14, the stress in the up-and-down adjusting process of the upper die lip 10 can be dispersedly distributed in the adjusting cavity 14 and the adjusting cavity 14 is enabled to be deformed slightly, and can not be intensively distributed at the upper die lip 10, so that the damage to the upper die head 1 is reduced, compared with the traditional opening mode, the service life of the upper die head 1 is greatly prolonged, and the service life of the die head is effectively prolonged. And because the section of the adjusting cavity 14 is a closed curve, the micro-deformation of the adjusting cavity 14 is sensitive, so that the change sensitivity of stress dispersion is higher, and the adjusting precision of the coating gap is better.
In alternative embodiments, the adjustment cavity 14 comprises a through hole with an oval, gourd-shaped or circular cross section. In a preferred embodiment, the adjustment cavity 14 is a through hole with a gourd-shaped cross section. Referring to fig. 7, the die head with the adjusting cavity 4 having the gourd-shaped cross section is shown, during the coating gap adjustment, the stress applied to the upper die lip 10 is dispersed on the thin wall at the front end of the adjusting cavity 14 having the gourd-shaped cross section, and is not concentrated on the upper die lip 10, so that the damage to the upper die head 1 is reduced.
In addition, in a preferred embodiment, the gap adjusting mechanism 4 includes a plurality of gap adjusting mechanisms 4 along the coating width direction, and the plurality of gap adjusting mechanisms 4 are uniformly arranged, so as to ensure that the stress applied to the front end walls of the upper die head 1 and the adjusting cavity 14 during the coating gap adjusting operation is uniform, so that the gap of the slit coating opening 100 along the width direction is kept consistent, and the effective adjustment of the coating gap is realized.
Moreover, a portion of the upper die 1 corresponding to a portion between two adjacent gap adjustment mechanisms 4 is an open through-hole 16, and the through-hole 16 communicates the adjustment cavity 14 and the adjustment groove 15. Therefore, the stress to which the upper die lip 10 is subjected in the gap adjusting process can be further effectively dispersed, and the service life of the die head is further prolonged.
The above embodiments are merely preferred embodiments of the present invention, and only lie in further detailed description of the technical solutions of the present invention, but the protection scope and the implementation manner of the present invention are not limited thereto, and any changes, combinations, deletions, replacements, or modifications that do not depart from the spirit and principle of the present invention will be included in the protection scope of the present invention.
Claims (10)
1. A slot extrusion die head with an adjustable coating gap comprises an upper die head and a lower die head, wherein the front end of the upper die head is provided with an upper die lip, and the front end of the lower die head is provided with a lower die lip corresponding to the upper die lip; a slit between the upper die lip and the lower die lip forms a slit coating opening; the rear end of the lower die head is provided with a feeding hole; the device is characterized in that a clearance adjusting mechanism is arranged on the upper die head; the gap adjusting mechanism comprises an adjusting rod; one end of the adjusting rod is connected with the upper die lip, and the other end of the adjusting rod penetrates out of the upper die head; the adjusting rod can drive the upper die lip to be vertically far away from or close to the lower die lip;
the adjusting cavity is positioned in the upper die head and close to the front end of the upper die head, and is formed in the coating width direction; the adjusting cavity is a through hole with a closed curve section; when the adjusting rod drives the upper die lip to be far away from or close to the lower die lip up and down, the adjusting cavity is stressed and deforms.
2. The slot extrusion die with the adjustable coating gap of claim 1, wherein the adjusting rod comprises a rod body arranged in the upper die head in a penetrating way; the part of the upper die head, which corresponds to the rod body of the adjusting rod and reaches the front end, is provided with an adjusting groove; one end of the rod body of the adjusting rod is connected with the upper die lip, and the other end of the rod body penetrates through the adjusting groove and penetrates out of the upper die head.
3. The slot extrusion die with the adjustable coating gap of claim 2, wherein the lower groove edge of the adjusting groove is provided with a connecting block connected with the upper die lip; the connecting block is provided with a through screw hole, one end of the rod body of the adjusting rod is in threaded connection with the screw hole on the connecting block, and the threaded connection meshing depth is adjustable along the rod body axial direction of the adjusting rod;
the rod body of the adjusting rod can freely rotate and penetrate out of the upper die head, and is clamped with the upper die head along the axial direction through the adjusting head; the adjusting head is fixedly connected with the rod body of the adjusting rod at least in the axial direction and can synchronously rotate in the rotating direction;
the adjusting head is rotated to drive the adjusting rod to rotate, the adjusting rod is adjusted to be in threaded connection with the connecting block, the connecting block is driven to move axially along the adjusting rod, and the upper die lip is far away from or close to the lower die lip.
4. The slot extrusion die with the adjustable coating gap of claim 3, wherein the connecting block is an integrated structure on the groove edge of the adjusting groove.
5. A slot extrusion die with an adjustable coating gap as set forth in claim 3, wherein said upper die is provided with a mounting seat; the rod body of the adjusting rod penetrates out of the upper die head, the other end of the adjusting rod can freely rotate to penetrate through the mounting seat, and the adjusting rod is axially clamped on the mounting seat through the adjusting head.
6. The slot extrusion die with the adjustable coating gap as claimed in claim 5, wherein the mounting base is provided with an adjusting scale.
7. The slot extrusion die with the adjustable coating gap as claimed in any one of claims 2 to 6, wherein the gap adjusting mechanism comprises a plurality of slots along the coating width direction; and the part of the upper die head, which corresponds to the space between two adjacent gap adjusting mechanisms, is an open through hole, and the through hole is communicated with the adjusting cavity and the adjusting groove.
8. A slot extrusion die with adjustable coating gap according to claim 1, characterized in that the adjusting cavity comprises a through hole with an oval, gourd-shaped or circular cross section.
9. A slot extrusion die with an adjustable coating gap according to claim 1, wherein the adjusting cavity is a through hole with a gourd-shaped cross section.
10. The slot extrusion die head with the adjustable coating gap according to claim 1, wherein a storage cavity is formed in the lower die head, and the feed inlet, the storage cavity and the slot coating port are sequentially communicated along a coating feed direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021513449.5U CN213102969U (en) | 2020-07-27 | 2020-07-27 | Slit extrusion die head with adjustable coating gap |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021513449.5U CN213102969U (en) | 2020-07-27 | 2020-07-27 | Slit extrusion die head with adjustable coating gap |
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| CN213102969U true CN213102969U (en) | 2021-05-04 |
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| CN202021513449.5U Active CN213102969U (en) | 2020-07-27 | 2020-07-27 | Slit extrusion die head with adjustable coating gap |
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