CN117065950A - Double-layer coating extrusion die and using method thereof - Google Patents
Double-layer coating extrusion die and using method thereof Download PDFInfo
- Publication number
- CN117065950A CN117065950A CN202311191847.8A CN202311191847A CN117065950A CN 117065950 A CN117065950 A CN 117065950A CN 202311191847 A CN202311191847 A CN 202311191847A CN 117065950 A CN117065950 A CN 117065950A
- Authority
- CN
- China
- Prior art keywords
- die head
- flow blocking
- lower die
- head
- die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 72
- 239000011248 coating agent Substances 0.000 title claims abstract description 65
- 238000001125 extrusion Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims abstract description 56
- 238000005507 spraying Methods 0.000 claims abstract description 53
- 230000000903 blocking effect Effects 0.000 claims abstract description 46
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 239000002002 slurry Substances 0.000 claims description 63
- 238000003825 pressing Methods 0.000 claims description 11
- 230000008602 contraction Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000004513 sizing Methods 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 11
- 230000001276 controlling effect Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
- B05B1/044—Slits, i.e. narrow openings defined by two straight and parallel lips; Elongated outlets for producing very wide discharges, e.g. fluid curtains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/084—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to condition of liquid or other fluent material already sprayed on the target, e.g. coating thickness, weight or pattern
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
- B05B12/1472—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet separate supply lines supplying different materials to separate outlets of the spraying apparatus
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Coating Apparatus (AREA)
Abstract
The application discloses a double-layer coating extrusion die and a use method thereof, and mainly relates to the field of coating and spraying devices. The device comprises an upper die head, a middle die head and a lower die head, wherein the middle die head is arranged between the upper die head and the lower die head, a gap is reserved between the middle die head and the upper die head and between the middle die head and the lower die head, flow blocking devices are arranged on the upper die head and the lower die head, each flow blocking device comprises a flow blocking block and a control motor, the control motor controls the flow blocking block to move up and down, and the flow blocking blocks control the gap; displacement detection devices are arranged at the two ends of the upper die head, the middle die head and the lower die head, and the displacement detection devices monitor the relative displacement among the upper die head, the middle die head and the lower die head. The application has the beneficial effects that: the device timely detects and adjusts the deviation of the die head through the displacement detection device, and prevents the influence on the coating quality due to the deviation of the die head. When the device is used for spraying, various sizing agents are sprayed in proportion through different gaps, so that the quality requirements of different coatings are ensured.
Description
Technical Field
The application relates to the field of coating spraying devices, in particular to a double-layer coating extrusion die and a using method thereof.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The coating is an important process of the previous working procedure of the lithium battery, and because the current lithium battery production process is different, the coating process is often used for spraying the two functional materials and the insulating coating, so that the two functional coatings and the insulating coating are required to be simultaneously sprayed during the spraying process in order to ensure the uniformity of the spraying process, and the spraying effect can meet the quality requirement of the lithium battery. Since two or more kinds of slurries are required to be sprayed at the same time, it is necessary to provide a plurality of dies for spraying the slurries, but when the dies are excessively or obliquely arranged, a phenomenon such as deflection occurs during use. Die head deflection can affect the spray quality of coating, and how to detect the deflection of the die head and timely adjust the die head is a problem to be solved.
For spraying of slurry, the feeding hole of the slurry is positioned in the middle of the device, so that the conditions of high flow speed of the slurry in the middle, low flow speed at the two ends and the like exist, and the problem of uneven spraying thickness is caused. And how to uniformly spray the slurry, namely, how to ensure that the thickness of the sprayed slurry meets the requirement is a problem to be solved. The even spraying of thick liquids adopts the choked flow piece to adjust the size of the clearance that thick liquids flowed through to realize mostly, and can't set up from the top of device to the thick liquids spraying choked flow piece of below, and how can make the thick liquids of below equally can carry out even spraying, and be convenient for constructor operation be the problem to be solved. When the sprayed gap is too many, the number of the required choked flow blocks is increased, so that the method is a complicated operation for adjusting the size of the gap and realizing uniform spraying, and the problem of how to quickly and conveniently control the size of the gap is solved. And when spraying various slurries, how to ensure that the slurries at all positions are sprayed in proportion so that the multi-layer slurries can be uniformly sprayed on the coating is a problem to be solved. For some special-requirement coating, the edge glue needs to be sprayed on the coating, as shown in fig. 10 of the specification, the edge glue and the slurry are sprayed at the same time, and how to enable the edge glue and the slurry to be uniformly sprayed without interfering with each other is a problem to be solved.
In summary, how to detect the deviation of the die head and adjust the die head in time is a problem to be solved. How to uniformly spray a plurality of layers of slurry in proportion on the coating is a problem to be solved. How to facilitate the operation of constructors as a problem to be solved. How to quickly and conveniently control the size of the gap is a problem to be solved.
Disclosure of Invention
The application aims to provide a double-layer coating extrusion die and a use method thereof. And when the device is used for spraying, various slurries are sprayed in proportion through different gaps, so that the quality requirements of different coatings are ensured. And the choke block is controlled by controlling the motor, so that the device is convenient for constructors to operate. The device is provided with a third feed inlet, so that the device can meet the coating and coating conditions of edge glue and the like.
The application aims to achieve the aim, and the aim is achieved by the following technical scheme:
the double-layer coating extrusion die comprises an upper die head, a middle die head and a lower die head, wherein the middle die head is arranged between the upper die head and the lower die head, a gap is reserved between the middle die head and the upper die head and between the middle die head and the lower die head, an upper die cavity and an upper die feeding hole are formed in the upper die head, the upper die cavity is positioned on the surface, close to the middle die head, of the upper die head, the upper die cavity is communicated with the upper die feeding hole, a middle die cavity and a middle die feeding hole are formed in the middle die head, the middle die cavity is positioned on the surface, close to the lower die head, of the middle die head, the middle die cavity is communicated with the middle die feeding hole, a lower die cavity is formed in the lower die head, and the lower die cavity is communicated with the middle die cavity through the gap; the upper die head and the lower die head are respectively provided with a flow blocking device, each flow blocking device comprises a plurality of flow blocking blocks and a plurality of control motors, the control motors control the flow blocking blocks to move up and down, and the flow blocking blocks control the size of gaps; meanwhile, the surfaces of the middle die heads are parallel to the upper die heads and the lower die heads, and slurry mixing and coating can be realized during coating, so that the middle die heads are arranged in a triangular prism shape, and the slurry can be normally coated. The middle die head is also provided with a middle die cavity and a middle die feed port, the middle die feed port is communicated with the middle die cavity, and the middle die cavity is positioned on the surface of the middle die head adjacent to the lower die head, so that the slurry entering the middle die feed port is extruded and coated by a lower gap after being decelerated by the middle die cavity, and the coating and spraying effects are realized.
The control motor is a linear displacement motor, and a plurality of linear displacement motors are connected. A plurality of linear displacement motors are connected, are connected through the connecting block at top, and are equipped with RS485 serial interface in the connecting block for the motor can be driven through a circuit. Because the linear displacement motor is provided with two rows, two RS485 serial interfaces are needed to control during operation, so that the linear displacement motor controls the flow choking blocks to corresponding positions to realize uniform spraying of slurry.
The choke device on the lower die head further comprises a connecting rod, one end of the connecting rod is connected with the choke block in a wedge shape, and the motor is controlled to move up and down through the connecting rod. The choke block on the lower die head is a second choke block, the top of the second choke block is provided with a wedge-shaped groove, and the second choke block is connected with the connecting rod through the wedge-shaped groove; the choke block on the upper die head is a first choke block, the bottom surface of the first choke block is obliquely arranged, and the bottom surface of the first choke block is parallel to the bottom surface of the upper die head. The lower die head is provided with a pressing strip which is positioned in the middle die cavity, the lower die head is provided with a third feeding port, and a gap between the lower die head and the middle die head is communicated with the third feeding port. The pressing strip is positioned in the middle die cavity, so that the slurry entering the middle die cavity is decelerated, the surface of the lower die head is protected, and abrasion and the like of the lower die head caused by long-time use are prevented. And the lower die of the pressing strip is also provided with a channel of a third feed port, for some special coating, edge glue needs to be sprayed, and in order to realize the spraying of the coating, a plurality of third feed ports are arranged below the pressing strip, and the third feed ports are matched with gaskets on the lower gap for use, so that the coating of the edge glue is formed.
Displacement detection devices are arranged at the two ends of the upper die head, the middle die head and the lower die head, and the displacement detection devices monitor the relative displacement among the upper die head, the middle die head and the lower die head. The displacement detection device comprises a displacement sensor and a dial indicator, wherein the displacement sensor is connected with a lower die head, a baffle is arranged at the front end of the lower die head and is contacted with an upper die head and a middle die head, the baffle is contacted with one end of the displacement sensor, the dial indicator is connected with the middle die head, a cylinder is arranged on the upper die head and is contacted with the dial indicator. The baffle is arranged on the lower die head and is contacted with the upper die head and the middle die head, and because the gaps among the lower die head, the middle die head and the upper die head need to spray coating and the die lips are arranged, the baffle is arranged to be matched with the lower die head, the upper die head and the middle die head. The lower die head is provided with a displacement sensor, one end of the displacement sensor is in contact with the baffle plate, the displacement sensor detects in a pneumatic mode, when the baffle plate rotates, one end of the displacement sensor stretches, then signals are transmitted, and finally the die head is adjusted through manual work.
The application method of the double-layer coating extrusion die comprises the following steps:
s1: the upper die head, the middle die head and the lower die head are installed, and the positions among the upper die head, the middle die head and the lower die head are monitored through a displacement sensor and a dial indicator, so that the influence on the coating and spraying quality is reduced;
s2: the bottoms of a plurality of first choked flow blocks on an upper die head are kept at the same horizontal height, the bottoms of a plurality of second choked flow blocks on a lower die head are kept at the same horizontal height, slurry is added from a feeding hole of the upper die and a feeding hole of a middle die in sequence for spraying, and then the spraying thickness of each area for coating is detected;
s3: the top end of the first flow blocking block is contacted with a control motor, and the control motor controls the expansion and contraction of the first flow blocking block, so that the first flow blocking block controls the uniform spraying of the slurry;
the wedge-shaped groove at the top end of the second flow blocking block is connected with one end of the connecting rod, the other end of the connecting rod is contacted with the control motor, and the control motor drives the second flow blocking block to move up and down through controlling the extension and retraction of the connecting rod, so that the second flow blocking block controls the uniform spraying of the slurry;
s4: sprayingAs the coated slurry flows in the gap, it is described by the formula:p pressure, l length, mu viscosity coefficient, w width, h gap and Q flow;
the Q flow in spraying is the spraying thickness of the coating, and the relation between the gap and the flow is obtained according to the moving distance of the flow blocking block, namely the change of the gap, so as to obtain the change of the spraying thickness;
s5: the upper die feed inlet and the middle die feed inlet are added with slurry in proportion, the heights of the choked flow blocks at different positions are controlled, and multiple slurries are sprayed at the same time in proportion according to the formula, so that the spraying thickness of each position of the same slurry is the same.
Compared with the prior art, the application has the beneficial effects that:
the device timely detects and adjusts the deviation of the die head through the displacement detection device, and prevents the influence on the coating quality due to the deviation of the die head. And when the device is used for spraying, various slurries are sprayed in proportion through different gaps, so that the quality requirements of different coatings are ensured. And the choke block is controlled by controlling the motor, so that the device is convenient for constructors to operate. The device is provided with a third feed inlet, so that the device can meet the coating and coating conditions of edge glue and the like.
Drawings
FIG. 1 is a schematic view of a two-layer coating extrusion die according to the present application.
FIG. 2 is an enlarged view of a portion of a two-layer coating extrusion die according to the present application.
FIG. 3 is a cross-sectional view of a two-layer coating extrusion die in accordance with the present application.
FIG. 4 is a cross-sectional view of a two-layer coating extrusion die in accordance with the present application.
FIG. 5 is a schematic view of a flow blocking device of the lower die of the present application.
FIG. 6 is a schematic view of a flow blocking device of the lower die of the present application.
FIG. 7 is a schematic view of a second blocker of a lower die of the present application.
FIG. 8 is a schematic view of a flow blocking device for an upper die head of the present application.
FIG. 9 is a schematic view of a first blocker of an upper die of the present application.
FIG. 10 is a schematic view of the upper shim of the lower die of the present application.
The reference numbers shown in the drawings:
1. an upper die head; 2. a middle die head; 3. a lower die head; 4. a gap; 5. an upper mold cavity; 6. a feeding hole of the upper die; 7. a middle mold cavity; 8. a middle mold feed inlet; 9. a lower die cavity; 10. a choke device; 11. a choke block; 12. controlling a motor; 13. a displacement detection device; 14. a connecting rod; 15. a second choke block; 16. wedge-shaped grooves; 17. a first choke block; 18. pressing strips; 19. a third feed inlet; 20. a displacement sensor; 21. a dial gauge; 22. a baffle; 23. a column.
Detailed Description
The application will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. Further, it will be understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the application, and equivalents thereof fall within the scope of the application as defined by the claims.
The application relates to a double-layer coating extrusion die and a use method thereof, wherein the main structure comprises an upper die head 1, a middle die head 2 and a lower die head 3, wherein the middle die head 2 is arranged between the upper die head 1 and the lower die head 3, and a gap 4 is reserved between the middle die head 2 and the upper die head 1 and between the middle die head 2 and the lower die head 3, so that slurry can be extruded from the gap 4 for spraying. The upper die head 1 is provided with an upper die cavity 5, an upper die feed port 6 and a flow blocking device 10 (described in detail below), the upper die cavity 5 is positioned on the surface of the upper die head 1 adjacent to the middle die head 2, and the upper die cavity 5 is communicated with the upper die feed port 6, so that slurry flows into the upper die cavity 5 through the upper die feed port 6 to be decelerated and mixed, and then is extruded and sprayed through a gap 4 between the upper die head 1 and the middle die head 2.
The middle die head 2 is positioned between the upper die head 1 and the lower die head 3, gaps 4 are reserved between the middle die head 2 and the upper die head 1 and between the middle die head 2 and the lower die head 3, the gaps 4 are channels for extruding and discharging slurry, the gaps 4 between the middle die head 2 and the upper die head 1 are upper gaps 4, and the gaps 4 between the middle die head 2 and the lower die head 3 are lower gaps 4. The upper gap 4 and the lower gap 4 are different in slurry passing through in use, so that different kinds of slurries can be mixed together for coating, and the slurry entering amounts and the like in the upper gap 4 and the lower gap 4 can be adjusted in the coating process to mix the different kinds of slurries in proportion. Meanwhile, since the surfaces of the middle die head 2 are parallel to the upper die head 1 and the lower die head 3, and slurry mixing coating can be realized during coating, the shape of the middle die head 2 is set in a mitsubishi shape, so that slurry can be normally coated. The middle die head 2 is also provided with a middle die cavity 7 and a middle die feed inlet 8, the middle die feed inlet 8 is communicated with the middle die cavity 7, and the middle die cavity 7 is positioned on the surface of the middle die head 2 adjacent to the lower die head 3, so that slurry entering the middle die feed inlet 8 is extruded and coated by the lower gap 4 after being decelerated by the middle die cavity 7, and the coating and spraying effect is realized.
The lower die head 3 is provided with a lower die cavity 9, a pressing strip 18, a third feeding port 19 and a flow blocking device 10 (described in detail below), the lower die cavity 9 is positioned on the surface of the lower die head 3 adjacent to the middle die head 2 and at the rear part of the middle die cavity 7, and is communicated with the middle die cavity 7 through a lower gap 4, so that the slurry passing through the middle die cavity 7 is decelerated, mixed and the like again through the lower die cavity 9. The pressing bar 18 is positioned in the middle die cavity 7, and has the functions of decelerating the slurry entering the middle die cavity 7 and protecting the surface of the lower die head 3, thereby preventing the abrasion of the lower die head 3 caused by long-time use, and the like. The lower die of the pressing bar 18 is also provided with a channel of a third feeding hole 19, for some special coating, edge glue needs to be sprayed, and in order to realize the spraying of the coating, a plurality of third feeding holes 19 are arranged below the pressing bar 18, and the third feeding holes 19 are matched with gaskets on the lower gap 4, so that the coating of the edge glue is formed. For the coating without spraying edge glue, the device can be used for coating only by replacing the gasket.
The choke device 10 (above) includes a plurality of choke blocks 11, a plurality of control motors 12, and the arrangement between the control motors 12 and the choke blocks 11 is one-to-one correspondence. In addition, because the device has the channels for extruding and spraying the two slurries of the upper gap 4 and the lower gap 4, two rows of choke devices 10 are required to be arranged when the choke devices 10 are arranged, so that the choke devices 10 of one row control the extrusion gap 4 of one slurry, and therefore, if the choke blocks 11 are manually adjusted, the control motor 12 is arranged for mechanical automatic control due to the fact that the number of the choke blocks 11 is large, the operation is inconvenient, and the like, so that the choke blocks 11 of the device are convenient to control. And the flow blocking devices 10 are respectively provided on the upper die 1 and the lower die 3 due to the positions of the upper gap 4 and the lower gap 4. The choke block 11 on the upper die head 1 is a first choke block 17, and the top of the first choke block 17 is connected with the control motor 12, so that the control motor 12 can control the choke block 11 to move up and down. In order to be able to control the size of the gap 4 better, i.e. the bottom surface of the flow-blocking block 11 is arranged to fit the gap 4 such that the ground of the flow-blocking block 11 is arranged obliquely and parallel to the bottom surface of the upper die head 1. The gap 4 can be adjusted when moving the choke block 11 up and down. The choke block 11 on the lower die head 3 is a second choke block 15, and the second choke block 15 is also regulated by the control motor 12, and unlike the first choke block 17, a connecting rod 14 is provided between the second choke block 15 and the control motor 12, because the movement of the second choke block 15 in the up-down direction is changed into the movement in the horizontal direction via the connecting rod 14. The second choke block 15 is provided with a wedge-shaped groove 16, and one end of the connecting rod 14 is matched with the wedge-shaped groove 16 on the second choke block 15, so that the second choke block 15 can realize the conversion of the moving direction through wedge-shaped connection. And the other end of the connecting rod 14 is connected with the control motor 12, so that the control motor 12 indirectly controls the movement of the choke block 11.
The control motor 12 is a linear displacement motor, and changes rotation into linear movement. And a plurality of linear displacement motors are connected, are connected through the connecting block at top, and are equipped with RS485 serial interface in the connecting block for the motor can be driven through a circuit. Because the linear displacement motor is provided with two rows, two RS485 serial interfaces are needed to control during operation, so that the linear displacement motor controls the choke block 11 to the corresponding position everywhere to realize uniform spraying of slurry.
The device aims atEnsuring the coating quality, so that the flow blocking device 10 is arranged to uniformly spray the slurry, and the arrangement principle of the flow blocking device 10 is that when the slurry is sprayed, the flow blocking device is known according to the Poisson's lawp pressure, l length, mu viscosity coefficient, w width, h gap 4, Q flow; the relation between the thickness of the slurry to be sprayed and the gap 4. Because this device needs multiple thick liquids to spray, and go up die 1 and well die 2 and all be the slope setting, go up die 1 and well die 2 and can produce relative movement after long-time use to influence the spraying quality of coating, so be equipped with respectively at last die 1, well die 2, lower die 3's both ends and be equipped with a displacement detection device 13, detect the relative displacement between last die 1 and well die 2, well die 2 and the lower die 3, avoid producing the displacement and influence the quality of coating because of last die 1, well die 2, lower die 3 between. The displacement detecting device 13 detects the relative displacement generated in the die head.
The displacement monitoring device comprises a displacement sensor 20, a dial indicator 21 and a baffle 22, wherein the baffle 22 is arranged on the lower die head 3 and is in contact with the upper die head 1 and the middle die head 2, and because a gap 4 between the lower die head 3, the middle die head 2 and the upper die head 1 is required to spray coating and is provided with a die lip, the baffle 22 is arranged to be matched with the lower die head 3, the upper die head 1 and the middle die head 2. The lower die 3 is provided with a displacement sensor 20, one end of the displacement sensor 20 is in contact with a baffle 22, the displacement sensor 20 detects in a pneumatic mode, when the baffle 22 rotates, one end of the displacement sensor 20 stretches, then signals are transmitted, and finally the die is adjusted manually. However, there are three cases in which the upper die 1 moves, the middle die 2 moves, and both the upper die 1 and the middle die 2 move during the movement. For better recognition and control. Therefore, in use, the dial gauge 21 is further arranged on the die head 2, and the dial gauge 21 is in contact with the column 23 arranged on the upper die head 1, so as to detect whether the upper die head 1 moves. If the dial gauge 21 is unchanged, the displacement sensor 20 sends a signal that the middle die 2 moves. When the dial gauge 21 changes, the detection needs to be performed in the centering die head 2 after the dial gauge 21 is leveled. Thereby the displacement among the upper die head 1, the middle die head 2 and the lower die head 3 is relatively detected, and the influence of the die displacement on the coating and spraying is avoided.
The use method is as follows:
the upper die head 1, the middle die head 2 and the lower die head 3 are installed, the displacement detection device 13 among the upper die head 1, the middle die head 2 and the lower die head 3 is calibrated, a limiting plate is arranged on the lower die head 3, the limiting plate is used for better installation of the baffle 22, then the baffle 22 and the lower die head 3 are installed, the middle die head 2 and the upper die head 1 are installed in sequence, the displacement detection device 13 is leveled after the installation is completed, and then the micrometer on the middle die head 2 is installed, so that the micrometer contacts with the column 23 on one side of the upper die head 1, and the calibration is performed. Preventing the influence on the spraying quality caused by the displacement of the die head. Then, after the choke device 10 is adjusted, slurry is sequentially added into the upper die feed port 6 and the middle die feed port 8 for spraying, and after the slurry is added into the upper die feed port 6, the choke block 11 of the choke device 10 on the upper die head 1 is adjusted because the slurry follows poiseuille law in the spraying processp pressure, l length, mu viscosity coefficient, w width, h gap 4, Q flow; in order to allow the slurry to be uniformly sprayed, the size of the gap 4 needs to be adjusted. And the flow blocking device 10 on the lower die head 3 is similar, so that the slurry can be uniformly sprayed. After each gap 4 of the slurry can be uniformly sprayed, the slurry is simultaneously added into the upper die feed inlet 6 and the lower die feed inlet in proportion, so that the slurry can be uniformly sprayed during coating and spraying, and the slurry can be sprayed in proportion, so that the coating and the coating meeting some special requirements can be realized. For the application of the edge bead, the slurry of the edge bead needs to be input into the third feeding port 19 and matched with the gasket so that the edge bead can be applied together, thereby achieving the quality required by the application. When the subsequent choke block 11 is worn, the choke block is controlled only by controlling the motor 12The expansion and contraction of the block 11 may be mediated.
In summary, the present apparatus detects and adjusts the deviation of the die head in time by the displacement detecting device 13, thereby preventing the influence of the deviation of the die head on the coating quality. And when the device is used for spraying, various slurries are sprayed in proportion through different gaps 4, so that the quality requirements of different coatings are ensured. And the choke block 11 is controlled by controlling the motor 12, so that the device is convenient for constructors to operate. The device is provided with a third feed opening 19 so that the device can meet the coating requirements of the edge glue and other conditions.
Claims (7)
1. The utility model provides a double-deck coating extrusion die, includes last die head (1), well die head (2), lower die head (3), well die head (2) set up between last die head (1), lower die head (3), and with last die head (1), have clearance (4) between lower die head (3), be equipped with on last die head (1) and go up die cavity (5), go up die cavity (5) and lie in the face that goes up die head (1) and well die head (2) are close to, go up die cavity (5) and be linked together with last die feed inlet (6), be equipped with well die cavity (7), well die feed inlet (8) on well die cavity (2) and the face that lower die head (3) are close to, well die cavity (7) are linked together with well die feed inlet (8), be equipped with down die cavity (9) on lower die head (3), be linked together through clearance (4) between well die cavity (9) and the well die cavity (7);
the method is characterized in that: the upper die head (1) and the lower die head (3) are respectively provided with a flow blocking device (10), the flow blocking devices (10) comprise a plurality of flow blocking blocks (11) and a plurality of control motors (12), the control motors (12) control the flow blocking blocks (11) to move up and down, and the flow blocking blocks (11) control the size of the gap (4);
the two ends of the upper die head (1), the middle die head (2) and the lower die head (3) are provided with displacement detection devices (13), and the displacement detection devices (13) monitor the relative displacement among the upper die head (1), the middle die head (2) and the lower die head (3).
2. A two-layer coating extrusion die as set forth in claim 1 wherein: the flow blocking device (10) on the lower die head (3) further comprises a connecting rod (14), one end of the connecting rod (14) is in wedge-shaped connection with the flow blocking block (11), and the control motor (12) controls the flow blocking block (11) to move up and down through the connecting rod (14).
3. A two-layer coating extrusion die as set forth in claim 2, wherein: the flow blocking block (11) on the lower die head (3) is a second flow blocking block (15), a wedge-shaped groove (16) is formed in the top of the second flow blocking block (15), and the second flow blocking block (15) is connected with the connecting rod (14) through the wedge-shaped groove (16);
the flow blocking block (11) on the upper die head (1) is a first flow blocking block (17), the bottom surface of the first flow blocking block (17) is obliquely arranged, and the bottom surface of the first flow blocking block (17) is parallel to the bottom surface of the upper die head (1).
4. A two-layer coating extrusion die as set forth in claim 3 wherein: the control motor (12) is a linear displacement motor, and a plurality of linear displacement motors are connected.
5. The two-layer coating extrusion die of claim 4, wherein: the lower die head (3) is provided with a pressing strip (18), the pressing strip (18) is positioned in the middle die cavity (7), the lower die head (3) is provided with a third feeding port (19), and a gap (4) between the lower die head (3) and the middle die head (2) is communicated with the third feeding port (19).
6. The two-layer coating extrusion die of claim 5, wherein: the displacement detection device (13) comprises a displacement sensor (20) and a dial indicator (21), the displacement sensor (20) is connected with a lower die head (3), a baffle (22) is arranged at the front end of the lower die head (3), the baffle (22) is contacted with an upper die head (1) and a middle die head (2), the baffle (22) is contacted with one end of the displacement sensor (20), the dial indicator (21) is connected with the middle die head (2), a cylinder (23) is arranged on the upper die head (1), and the cylinder (23) is contacted with the dial indicator (21).
7. The method of using a two-layer coating extrusion die as set forth in any one of claims 1-6, wherein: the method comprises the following steps:
s1: the upper die head (1), the middle die head (2) and the lower die head (3) are installed, and positions among the upper die head (1), the middle die head (2) and the lower die head (3) are monitored through a displacement sensor (20) and a dial indicator (21), so that the influence on the coating and spraying quality is reduced;
s2: the bottoms of a plurality of first choked flow blocks (17) on an upper die head (1) are kept at the same horizontal height, the bottoms of a plurality of second choked flow blocks (15) on a lower die head (3) are kept at the same horizontal height, slurry is added from an upper die feed inlet (6) and a middle die feed inlet (8) in sequence for spraying, and then the spraying thickness of each area for coating is detected;
s3: the top end of the first choke block (17) is contacted with a control motor (12), and the control motor (12) controls the expansion and contraction of the first choke block (17) so that the first choke block (17) controls the uniform spraying of the slurry;
the wedge-shaped groove (16) at the top end of the second flow blocking block (15) is connected with one end of the connecting rod (14), the other end of the connecting rod (14) is in contact with the control motor (12), and the control motor (12) drives the second flow blocking block (15) to move up and down through the expansion and contraction of the control connecting rod (14), so that the second flow blocking block (15) controls uniform spraying of slurry;
s4: the sprayed slurry flows in the gap (4) as described in the formula:p pressure, l length, mu viscosity coefficient, w width, h gap (4), Q flow;
q flow in spraying is the spraying thickness of the coating, and according to the moving distance of the choke block (11), namely the change of the gap (4), the change of the spraying thickness is obtained, and the relation between the gap (4) and the flow is obtained;
s5: slurry is added into the upper die feed inlet (6) and the middle die feed inlet (8) in proportion, the heights of the choke blocks (11) at different positions are controlled, and multiple slurries are sprayed at the same time in proportion according to the formula, so that the spraying thickness of each position of the same slurry is the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311191847.8A CN117065950A (en) | 2023-09-14 | 2023-09-14 | Double-layer coating extrusion die and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311191847.8A CN117065950A (en) | 2023-09-14 | 2023-09-14 | Double-layer coating extrusion die and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117065950A true CN117065950A (en) | 2023-11-17 |
Family
ID=88704255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311191847.8A Pending CN117065950A (en) | 2023-09-14 | 2023-09-14 | Double-layer coating extrusion die and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117065950A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118162335A (en) * | 2024-05-14 | 2024-06-11 | 南京华视智能科技股份有限公司 | Anti-sedimentation double-gradual-change cavity die head of hydrogen fuel cell and coating method thereof |
-
2023
- 2023-09-14 CN CN202311191847.8A patent/CN117065950A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118162335A (en) * | 2024-05-14 | 2024-06-11 | 南京华视智能科技股份有限公司 | Anti-sedimentation double-gradual-change cavity die head of hydrogen fuel cell and coating method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN117065950A (en) | Double-layer coating extrusion die and using method thereof | |
| CN109225763B (en) | Coating head, coating device and coating method | |
| CN109513570B (en) | Coating head, coating device and coating method | |
| US7622004B2 (en) | Slit die, and method and device for producing base material with coating film | |
| CN1184015C (en) | Multilayer sliding mould coating method | |
| CN1023384C (en) | Apparatus for coating roll basic material and mfg. baseless roll material | |
| CN101112787B (en) | Apparatus for sheathing of cables with movable mould | |
| GB2141844A (en) | A method of monitoring and controlling the production of extruded profiles and an apparatus incorporating such means | |
| CN211989448U (en) | Coating die | |
| CN114643162B (en) | Coating device | |
| CN113083617A (en) | Coating gasket, coating die head and coating machine | |
| CN217017196U (en) | Coating die head and coating device | |
| CN211865658U (en) | Extrusion coating head adjusting mechanism | |
| CN217094182U (en) | Three-layer coating die head | |
| CN220836147U (en) | Flow blocking device for double-layer coating extrusion die | |
| CN216115956U (en) | Multi-point multi-material layer contour measuring device | |
| CN101817219B (en) | An assembly and a method for extruding a tire component | |
| CN211307314U (en) | Die head of extrusion die | |
| CN216988359U (en) | Piezoelectric ceramic automatic adjustment coating die head | |
| CN218475518U (en) | Coating die head belted steel pearl regulating block | |
| CN220836143U (en) | Fixing assembly for coating extrusion die | |
| CN210283161U (en) | Steel wire extrusion rubber coating machine head | |
| CN110253852B (en) | Design method of folding wide film extrusion die | |
| CN220836142U (en) | Edge glue spraying device for coating extrusion die | |
| CN220836160U (en) | Extrusion chamber for coating extrusion die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |