CN113680604B - Intermittent coating die head - Google Patents
Intermittent coating die head Download PDFInfo
- Publication number
- CN113680604B CN113680604B CN202111022231.9A CN202111022231A CN113680604B CN 113680604 B CN113680604 B CN 113680604B CN 202111022231 A CN202111022231 A CN 202111022231A CN 113680604 B CN113680604 B CN 113680604B
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- Prior art keywords
- coating
- die head
- die
- fluid distribution
- discharge channel
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- 239000011248 coating agent Substances 0.000 title claims abstract description 77
- 238000000576 coating method Methods 0.000 title claims abstract description 77
- 230000007246 mechanism Effects 0.000 claims abstract description 66
- 239000012530 fluid Substances 0.000 claims abstract description 45
- 238000004891 communication Methods 0.000 claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims description 22
- 230000000903 blocking effect Effects 0.000 claims description 8
- 239000002002 slurry Substances 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 11
- 238000009434 installation Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0254—Coating heads with slot-shaped outlet
- B05C5/0258—Coating heads with slot-shaped outlet flow controlled, e.g. by a valve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1007—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material
- B05C11/1013—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material responsive to flow or pressure of liquid or other fluent material
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Coating Apparatus (AREA)
Abstract
The invention relates to the technical field of coating die heads, in particular to an intermittent coating die head which comprises a die head body and an adjusting mechanism, wherein a fluid distribution cavity is arranged in the die head body, a coating lip, a discharge channel and the adjusting mechanism are arranged on the die head body, and the adjusting mechanism is suitable for switching the fluid distribution cavity to be communicated with the coating lip or the fluid distribution cavity to be communicated with the discharge channel. When coating is discharged, the adjusting mechanism is started, the fluid distribution cavity is cut off by the adjusting mechanism to be communicated with the discharge channel, so that the fluid distribution cavity is communicated with the coating lip, and the slurry flows out of the coating lip and is coated on the base material. When coating is left white, the adjusting mechanism is started again, and the adjusting mechanism cuts off the communication between the fluid distribution cavity and the coating lip at the moment, so that the fluid distribution cavity is communicated with the discharge channel, and the slurry is discharged out of the die head from the discharge channel. By adopting the adjusting mechanism, an intermittent valve in the prior art is replaced, so that the problem of material dragging caused by pressure build-up due to insufficient emptying in the die cavity is solved.
Description
Technical Field
The invention relates to the technical field of coating die heads, in particular to an intermittent coating die head.
Background
The cylindrical winding battery requires the production process of the pole piece to be an intermittent coating mode. The intermittent coating mode in the market at present mainly controls the make-and-break of slurry through the intermittent coating valve body outside a group of die heads to realize the intermittent coating of the pole piece.
The main drawback is that because the battery slurry is a highly viscous fluid, it is difficult to evacuate the die cavity. Gas can remain in the die cavity due to incomplete evacuation, and once the gas remains in the die cavity, the stability of a flow field in the die cavity can be affected, so that intermittent function is abnormal, and the condition of dragging often exists in a blank position.
Disclosure of Invention
The invention aims to provide an intermittent coating die head to solve the problem that material dragging often exists at the blank leaving position of a pole piece.
In order to achieve the purpose, the technical scheme adopted by the invention is to provide an intermittent coating die head, which comprises a die head body and an adjusting mechanism, wherein a fluid distribution cavity is arranged in the die head body, a coating lip and a discharge channel are arranged on the die head body, the adjusting mechanism is arranged on the die head body, and the adjusting mechanism is suitable for switching the fluid distribution cavity to be communicated with the coating lip or the fluid distribution cavity to be communicated with the discharge channel.
Further, adjustment mechanism includes the on-off regulating block, this internal mounting groove that is equipped with of die head, at least one side intercommunication of mounting groove has discharge channel, the on-off regulating block inlay in the mounting groove, the on-off regulating block is suitable for to block fluid distribution chamber with the intercommunication of coating lip or be suitable for to block fluid distribution chamber with discharge channel's intercommunication.
Furthermore, the device also comprises a driving mechanism connected with the on-off adjusting block, and the driving mechanism is suitable for driving the on-off adjusting block to lift in the mounting groove.
Furthermore, the adjusting mechanism further comprises a guide rod, and the driving mechanism is connected with the on-off adjusting block through the guide rod.
Furthermore, the bottom of mounting groove is equipped with connects the via hole, guide bar one end is connected actuating mechanism, the other end runs through connect the via hole with the break-make regulating block is connected.
Furthermore, the guide rod is detachably connected with the on-off adjusting block.
Further, the die head body comprises an upper die and a lower die, the mounting groove and the discharge channel are arranged on the lower die, and the upper die is provided with a yielding groove which avoids interference to the sliding of the on-off adjusting block.
Further, the die head body comprises an upper die and a lower die, the mounting groove and the discharge channel are arranged on the upper die, and the lower die is provided with a yielding groove which avoids interference to the sliding of the on-off adjusting block.
Furthermore, a concave cavity is arranged on one side of the on-off adjusting block and is suitable for communicating the fluid distribution cavity with the discharge channel.
Further, the outlet end of the discharge channel is provided with a pressure regulating valve.
The invention has the beneficial effects that:
1. when coating is discharged, the adjusting mechanism is started, the fluid distribution cavity is cut off by the adjusting mechanism to be communicated with the discharge channel, so that the fluid distribution cavity is communicated with the coating lip, and the slurry flows out of the coating lip and is coated on the base material. When coating is left white, the adjusting mechanism is started again, at the moment, the adjusting mechanism cuts off the communication between the fluid distribution cavity and the coating lip, so that the fluid distribution cavity is communicated with the discharge channel, and the slurry is discharged out of the die head from the discharge channel. Through the regulation of adjustment mechanism, can realize the break-make function of coating slit and relief hole. By adopting the adjusting mechanism, an intermittent valve in the prior art is replaced, and gas cannot remain in the die head fluid distribution cavity, so that the problem of material dragging caused by pressure build-up due to insufficient emptying in the fluid distribution cavity is solved.
2. The intermittent coating die head also comprises a driving mechanism, and the driving mechanism is suitable for driving the on-off regulating block to slide in the mounting groove. The adjusting mechanism further comprises a guide rod, and the guide rod is arranged between the driving mechanism and the on-off adjusting block. The driving mechanism can adopt a pneumatic or electric actuating mechanism, one end of the guide rod is connected with the driving mechanism, the other end of the guide rod extends into the connecting through hole to be connected with the on-off regulating block, and the guide rod guides the sliding of the on-off regulating block. The on-off adjusting block is driven to lift through the driving mechanism, so that the change of the flow direction of the slurry is realized, and the intermittent coating is realized.
3. The outlet end of the discharge channel is provided with a pressure regulating valve, so that the pressure of the discharged material is consistent with the pressure of the discharged material during coating, the pressure stability during intermittent switching can be ensured, the fluctuation is small, and the stable coating is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic perspective view of a batch coating die according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of the position of shims used in a batch coating die according to an embodiment of the present invention;
fig. 3 is a schematic view of the overall structure of an adjusting mechanism used in an intermittent coating die according to an embodiment of the present invention;
FIG. 4 is a schematic view of the overall structure of an installation groove used in an intermittent coating die according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a batch coating die provided by an embodiment of the present invention;
fig. 6 is a schematic view of the installation position of an adjusting mechanism used in an intermittent coating die head provided by an embodiment of the invention.
Description of reference numerals:
1. a die head body; 11. a fluid distribution chamber; 12. coating the lip; 13. a discharge channel; 14. mounting grooves; 141. a connecting via; 15. an upper die; 151. a yielding groove; 16. a lower die; 161. mounting positions; 17. a gasket; 18. coating a slit; 19. a feed channel; 2. an adjustment mechanism; 21. an on-off regulating block; 22. a guide rod.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1 to 6, an intermittent coating die head provided as an embodiment of the present invention includes a die head body 1 and an adjusting mechanism 2, a fluid distribution cavity 11 is provided in the die head body 1, a coating lip 12 and a discharge channel 13 are provided on the die head body 1, the adjusting mechanism 2 is provided on the die head body 1, and the adjusting mechanism 2 is adapted to switch the fluid distribution cavity 11 to be communicated with the coating lip 12 or the fluid distribution cavity 11 to be communicated with the discharge channel 13. When coating is discharged, the adjusting mechanism 2 is started, the adjusting mechanism 2 cuts off the communication between the fluid distribution cavity 11 and the discharge channel 13, so that the fluid distribution cavity 11 is communicated with the coating lip 12, and the slurry flows out from the coating lip 12 and is coated on the base material. When the coating is left blank, the adjusting mechanism 2 is started again, and the adjusting mechanism 2 cuts off the communication between the fluid distribution cavity 11 and the coating lip 12, so that the fluid distribution cavity 11 is communicated with the discharge channel 13, and the slurry is discharged out of the die head from the discharge channel 13. The on-off function of the coating slit 18 and the discharge hole can be realized through the adjustment of the adjusting mechanism 2. By adopting the adjusting mechanism 2, an intermittent valve in the prior art is replaced, and gas cannot remain in the fluid distribution cavity 11, so that the problem of material dragging caused by pressure build-up due to insufficient emptying in the fluid distribution cavity 11 is solved.
Specifically, adjustment mechanism 2 includes on-off regulating block 21, is equipped with mounting groove 14 in the die head body 1, and at least one side intercommunication of mounting groove 14 has discharge channel 13, and in this embodiment, the both sides of mounting groove 14 all communicate there is discharge channel 13. The on-off adjusting block 21 is embedded in the mounting groove 14 and is slidably connected to the mounting groove 14, and the on-off adjusting block 21 is suitable for blocking the communication between the fluid distribution chamber 11 and the coating lip 12 or blocking the communication between the fluid distribution chamber 11 and the discharge channel 13. The die head body 1 comprises an upper die 15, a lower die 16 and a gasket 17, the gasket 17 comprises a fixing plate and a first side plate and a second side plate which are respectively arranged at two ends of the fixing plate, and the lower die 16 is close to a coating lip edge and the upper die 15 is close to a coating lip edge and a gap between the first side plate and the second side plate to form a coating slit 18. The coating lip 12 is located at one side of the die head body 1 and communicated with the coating slit 18, and the lower die 16 is provided with a feeding channel 19 and a fluid distribution cavity 11 which are communicated. The mounting groove 14 is arranged at the top end of the lower die 16, a discharge channel 13 communicated with the mounting groove 14 is arranged on one side of the mounting groove, and the discharge channel 13 penetrates through two ends of the lower die 16.
Referring to fig. 5 and 6, the top end of the on-off adjusting block 21 is a flat blocking block, which is completely attached to the mouth of the mounting groove 14 and is suitable for plugging the mounting groove 14. The on-off adjusting block can be made of metal materials or hard plastics. The upper die 15 is provided with a relief groove 151 for avoiding interference with the sliding of the on-off regulating block 21. One side of the on-off adjusting block 21 is provided with a concave cavity, when the on-off adjusting block 21 moves upwards, the blocking block rises to cut off the communication between the fluid distribution cavity 11 and the coating lip 12, at the moment, the concave cavity extends out of the mounting groove 14 to communicate the fluid distribution cavity 11 with the discharge channel 13, slurry flows through the feeding channel 19, the fluid distribution cavity 11, the coating slit 18, the mounting groove 14 and the discharge channel 13 in sequence, and finally is discharged out of the die head to realize coating blank keeping. When the on-off adjusting block 21 moves downwards, the blocking block moves downwards to be completely embedded into the mounting groove 14 and is completely attached to the opening of the mounting groove 14, the fluid distribution cavity 11 is cut off to be communicated with the discharge channel 13, the fluid distribution cavity 11 is communicated with the coating lip 12, and at the moment, slurry flows through the feeding channel 19, the fluid distribution cavity 11, the coating slit 18 and the coating lip 12 in sequence to realize coating discharge.
As a variable embodiment, the adjusting mechanism 2 can also block the communication between the fluid distribution chamber 11 and the coating lip 12 or the communication between the fluid distribution chamber 11 and the discharge channel 13 in a horizontally moving manner. The mounting groove 14 and the discharge channel 13 may be both provided on the upper mold 15, and the lower mold 16 is provided with a relief groove 151 for avoiding interference with the sliding of the on-off adjusting block 21. Or one on the upper die 15 and one on the lower die 16. The on-off regulating block 21 may also take other shapes as long as it satisfies the blocking and communicating functions.
Further, the intermittent coating die head also comprises a driving mechanism connected with the on-off adjusting block 21, and the driving mechanism is suitable for driving the on-off adjusting block 21 to lift in the mounting groove 14.
In particular, the driving mechanism may adopt a pneumatic or electric actuator, i.e. a cylinder or an electric cylinder in the prior art. The drive mechanism is intermittently moved by a corresponding control device. The adjusting mechanism 2 further comprises a guide rod 22, and the driving mechanism is connected with the on-off adjusting block 21 through the guide rod 22. The bottom of mounting groove 14 is equipped with connects via hole 141, and actuating mechanism is connected to guide bar 22 one end, and the other end runs through and connects via hole 141 and is connected with on-off regulating block 21, and guide bar 22 sliding connection is in connecting via hole 141. The on-off adjusting block 21 is driven to lift through the driving mechanism, so that the flow direction of the slurry is changed, and intermittent coating is realized. In this embodiment, the bottom end of the lower die 16 is provided with an installation position 161 for installing a driving mechanism, each guide rod 22 is connected with a driving mechanism, and the sliding damping of the on-off adjusting block 21 is reduced through synchronous driving of a plurality of driving mechanisms, so that the on-off adjusting block 21 is quickly lifted, and the slurry flow direction is quickly switched.
As a variant, only one driving mechanism may be provided, and the position of the mounting position 161 of the driving mechanism is not limited, and only the lifting of the on-off adjusting block 21 needs to be driven. The driving mechanism can also adopt a lifting device or an oil cylinder in the prior art.
Further, the guide rod 22 is detachably connected to the on-off regulation block 21. In this embodiment, the guide rod 22 and the on-off adjusting block 21 are in threaded connection, the threaded connection is convenient and simple to operate, the guide rod 22 and the on-off adjusting block 21 can be assembled on site, and the assembly efficiency is improved. The detachable connection mode can also adopt modes such as splicing, buckling connection or bolt connection.
Further, the outlet end of the discharge channel 13 is provided with a pressure regulating valve. Through being equipped with pressure regulating valve at discharge channel 13's exit end, can realize when arranging the material that row material pressure is unanimous with the pressure when coating, pressure stability when can guaranteeing intermittent type to switch like this, it is undulant little, be favorable to stabilizing the coating.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. An intermittent coating die head is characterized by comprising a die head body (1) and an adjusting mechanism (2), wherein a fluid distribution cavity (11) is arranged in the die head body (1), and a coating lip (12) and a discharge channel (13) are arranged on the die head body (1); the adjusting mechanism (2) comprises an on-off adjusting block (21), a mounting groove (14) is formed in the die head body (1), at least one side of the mounting groove (14) is communicated with the discharge channel (13), the on-off adjusting block (21) is embedded in the mounting groove (14), and the on-off adjusting block (21) is suitable for blocking the communication between the fluid distribution cavity (11) and the coating lip (12) or blocking the communication between the fluid distribution cavity (11) and the discharge channel (13); and a concave cavity is arranged on one side of the on-off adjusting block (21), and is suitable for communicating the fluid distribution cavity (11) with the discharge channel (13).
2. A batch coating die according to claim 1, further comprising a driving mechanism connected to said on-off regulating block (21), said driving mechanism being adapted to drive said on-off regulating block (21) to ascend and descend in said mounting groove (14).
3. An intermittent coating die according to claim 2, characterized in that the adjusting mechanism (2) further comprises a guide rod (22), and the driving mechanism is connected to the on-off adjusting block (21) through the guide rod (22).
4. A batch coating die head according to claim 3, wherein a connecting through hole (141) is provided at the bottom end of the mounting groove (14), and the guide rod (22) has one end connected to the driving mechanism and the other end connected to the on-off regulating block (21) through the connecting through hole (141).
5. A batch coating die according to claim 3, characterised in that said guide bar (22) is removably connected to said make-and-break block (21).
6. The intermittent coating die head according to any one of claims 1 to 5, wherein the die head body (1) comprises an upper die (15) and a lower die (16), the mounting groove (14) and the discharge passage (13) are provided in the lower die (16), and the upper die (15) is provided with a relief groove (151) for avoiding interference with the sliding of the on-off regulating block (21).
7. The intermittent coating die head according to any one of claims 1 to 5, wherein the die head body (1) comprises an upper die (15) and a lower die (16), the mounting groove (14) and the discharge passage (13) are provided in the upper die (15), and the lower die (16) is provided with a relief groove (151) for avoiding interference with the sliding of the on-off regulating block (21).
8. A batch coating die according to any one of claims 1 to 5, characterised in that the outlet end of the discharge channel (13) is provided with a pressure regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111022231.9A CN113680604B (en) | 2021-09-01 | 2021-09-01 | Intermittent coating die head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111022231.9A CN113680604B (en) | 2021-09-01 | 2021-09-01 | Intermittent coating die head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113680604A CN113680604A (en) | 2021-11-23 |
| CN113680604B true CN113680604B (en) | 2022-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111022231.9A Active CN113680604B (en) | 2021-09-01 | 2021-09-01 | Intermittent coating die head |
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| Country | Link |
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| CN (1) | CN113680604B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5824156A (en) * | 1994-12-27 | 1998-10-20 | Matsushita Electric Industrial Co., Ltd. | Intermittent coating apparatus, intermittent coating method and manufacturing method of battery electrodes, and non aqueous elecrolyte cell |
| JPH10314644A (en) * | 1997-03-14 | 1998-12-02 | Inoue Kinzoku Kogyo Kk | Coater |
| CN1651156A (en) * | 2000-03-17 | 2005-08-10 | 索尼株式会社 | Coating machine |
-
2021
- 2021-09-01 CN CN202111022231.9A patent/CN113680604B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5824156A (en) * | 1994-12-27 | 1998-10-20 | Matsushita Electric Industrial Co., Ltd. | Intermittent coating apparatus, intermittent coating method and manufacturing method of battery electrodes, and non aqueous elecrolyte cell |
| JPH10314644A (en) * | 1997-03-14 | 1998-12-02 | Inoue Kinzoku Kogyo Kk | Coater |
| CN1651156A (en) * | 2000-03-17 | 2005-08-10 | 索尼株式会社 | Coating machine |
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| Publication number | Publication date |
|---|---|
| CN113680604A (en) | 2021-11-23 |
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