CN217094182U - Three-layer coating die head - Google Patents
Three-layer coating die head Download PDFInfo
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- CN217094182U CN217094182U CN202220567151.5U CN202220567151U CN217094182U CN 217094182 U CN217094182 U CN 217094182U CN 202220567151 U CN202220567151 U CN 202220567151U CN 217094182 U CN217094182 U CN 217094182U
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Abstract
The utility model discloses a three-layer coating die head, which comprises a first die head, a second die head, a third die head and a fourth die head, wherein the second die head is fixedly connected with the first die head, a first gasket is clamped between the first die head and the second die head so as to form a first coating slit, and the second die head is provided with a first cavity and a first feed inlet; the third die head is fixedly connected with the second die head, a second gasket is clamped between the second die head and the third die head to form a second coating slit, and the third die head is provided with a second cavity and a second feeding hole; the fourth die head and the third die head are fixedly connected, a third gasket is clamped between the third die head and the fourth die head to form a third coating slit, and the fourth die head is provided with a third cavity and a third feeding port. The utility model provides a three-layer coating die head has realized the multilayer coating, and multilayer point is glued simultaneously, has improved the convenience of assembly and maintenance, can adjust coating thickness, has promoted the coating homogeneity, has improved production efficiency.
Description
Technical Field
The utility model relates to a coating die head technical field especially relates to a three-layer coating die head.
Background
Slit extrusion coating is a precise wet coating technique, and the working principle of the slit extrusion coating is that slurry is extruded and sprayed along a gap of a coating die head under a certain pressure and a certain flow rate and is transferred to a substrate. Compared with other coating modes, the coating method has the advantages of high coating speed, high precision and uniform wet thickness; the coating system is closed, so that pollutants can be prevented from entering the coating process, the utilization rate of the slurry is high, the stable property of the slurry can be kept, and the coating system can adapt to different slurry viscosity and solid content ranges.
The coating die head is composed of an upper die head, a lower die head and a gasket clamped in the upper die head, a cavity is formed in the lower die head, slurry enters the cavity from a feed port, a notch for the slurry to flow out is formed in the front end of the gasket, the upper die head, the lower die head and the gasket are arranged in a surrounding mode to form a coating slit, the slurry extrudes the coating slurry from a lip to a base material on a coating roller through the coating slit, a functional layer is formed on the base material, and if negative electrode slurry is coated on a copper foil, a battery negative electrode sheet is formed; and coating the positive electrode slurry on the aluminum foil to form the battery positive electrode plate.
At present, according to different process requirements of battery pole pieces, single-layer, double-layer or multi-layer slurry is required to be coated on a base material, so that the battery pole pieces have different functional coatings.
Most of the existing coating dies are single-layer coating dies, namely, after a layer of slurry is coated on a substrate, the single-layer coating dies are dried, and then a second layer is coated on the substrate again, and the steps are repeated. Although, in an exemplary technique, there is also a double-layer slurry simultaneous coating using a double-layer coating die, it is still not sufficient to perform a triple-layer slurry simultaneous coating, and the coating efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a three-layer coating die head, aims at improving coating efficiency.
In order to achieve the above object, the utility model provides a three-layer coating die head, three-layer coating die head includes:
a first die head;
the second die head is fixedly connected with the first die head, a first gasket is clamped between the first die head and the second die head to form a first coating slit, and the second die head is provided with a first cavity communicated with the first coating slit and a first feeding hole communicated with the first cavity;
the third die head is fixedly connected with the second die head, a second gasket is clamped between the second die head and the third die head to form a second coating slit, and the third die head is provided with a second cavity communicated with the second coating slit and a second feeding hole communicated with the second cavity; and
and the fourth die head is fixedly connected with the third die head, a third gasket is clamped between the third die head and the fourth die head to form a third coating slit, and the fourth die head is provided with a third cavity communicated with the third coating slit and a third feeding port communicated with the third cavity.
Optionally, the three-layer coating die head further comprises a first dispensing valve fixed on the first die head;
the first die head is provided with a first dispensing channel communicated with the first dispensing valve, and the first gasket is provided with a first glue flowing channel communicated with the first dispensing channel;
and a second dispensing channel is formed in the position, corresponding to the first dispensing channel, of the second die head, the first dispensing channel and the second dispensing channel are communicated or blocked through the first gasket, and the second gasket is provided with a second glue flowing channel communicated with the second dispensing channel.
Optionally, the three-layer coating die head further comprises a second dispensing valve, and the second dispensing valve is fixed on the third die head;
and the third die head is provided with a third glue dispensing channel communicated with the second glue dispensing valve, and the third gasket is provided with a third glue flowing channel communicated with the third glue dispensing channel.
Optionally, the three-layer coating die head further comprises a plurality of adjusting components which are arranged on the first die head at intervals and all extend into the first coating slit, so that the thickness of the coating layer can be adjusted by changing the coating surface density.
Optionally, the adjusting assembly includes an actuating mechanism and a T-shaped adjusting block connected to the actuating mechanism, the actuating mechanism is fixed to the first die, the first die is provided with a slot communicated with the first coating slit, and the T-shaped adjusting block is inserted into the slot and placed in the first coating slit.
Optionally, the actuator includes a differential head and a coupling, and the differential head is connected to the T-shaped adjusting block through the coupling; or
The actuating mechanism comprises a driving plate, a displacement sensor, a motor and a coupler, the motor and the displacement sensor are respectively electrically connected with the driving plate, and the motor is connected with the T-shaped adjusting block through the coupler; the displacement sensor is used for detecting a displacement signal of the T-shaped adjusting block; and the driving plate is used for controlling the T-shaped adjusting block to work according to the displacement signal.
Optionally, the first die head is concavely provided with a containing groove for at least partially containing the actuating mechanism, a cover plate is arranged on a notch cover of the containing groove, and a baffle plate is arranged on the first die head close to the containing groove.
Optionally, the first die head and the second die head, the second die head and the third die head, and the third die head and the fourth die head are all fixed by bolt locks;
the three-layer coating die head further comprises a hinge assembly, the hinge assembly comprises four hinge blocks which are sequentially connected, the four hinge blocks are respectively fixed on the back sides of the first die head, the second die head, the third die head and the fourth die head, screw holes are formed in the hinge blocks on the first die head, and a stress application rod is fixed in the screw holes.
Optionally, the back side edge of the second die head protrudes from the projection surface of the first die head, and the bolt hole of the bolt is opened at the protruding part of the second die head; the back side edge of the third die head protrudes out of the projection surface of the second die head, and the bolt hole of the bolt is formed in the protruding part of the third die head; or
The back side edge of the second die head is provided with a chute for locking the bolt; and the back side edge of the third die head is provided with a chute for locking the bolt.
Optionally, a narrow groove extending in the height direction of the fourth die head is formed in the lower side of the fourth die head, a portion of the fourth die head located on the front side of the narrow groove is a deformation portion, a portion of the fourth die head located on the back side of the narrow groove is a base, the base is provided with a threaded hole extending in the width direction of the fourth die head, a push-pull rod is fixed in the threaded hole, and the push-pull rod is used for pushing or pulling the narrow groove to deform so as to adjust the size of a lip on the discharge side of the third coating slit.
In the technical scheme of the utility model, the three-layer coating die head comprises a first die head, a second die head, a third die head and a fourth die head; the second die head is fixedly connected with the first die head, a first gasket is clamped between the first die head and the second die head to form a first coating slit, and the second die head is provided with a first cavity communicated with the first coating slit and a first feeding hole communicated with the first cavity; the third die head is fixedly connected with the second die head, a second gasket is clamped between the second die head and the third die head to form a second coating slit, and the third die head is provided with a second cavity communicated with the second coating slit and a second feeding hole communicated with the second cavity; the fourth die head and the third die head are fixedly connected, a third gasket is clamped between the third die head and the fourth die head to form a third coating slit, and the fourth die head is provided with a third cavity communicated with the third coating slit and a third feeding port communicated with the third cavity. It can be understood that the slurry in the first cavity is extruded and coated from the first coating slit, the slurry in the second cavity is extruded and coated from the second coating slit, the slurry in the third cavity is extruded and coated from the third coating slit, and the extruded slurry is coated on the base material of the back roll, so that three-layer coating is realized, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of a three-layer coating die of the present invention;
FIG. 2 is a side view of an embodiment of the triple coating die of the present invention;
FIG. 3 is a top view of an embodiment of the triple layer coating die of the present invention;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;
FIG. 5 is a cross-sectional view taken at B-B of FIG. 3;
fig. 6 is a cross-sectional view at C-C in fig. 3.
The reference numbers illustrate:
10. a first die head; 20. a second die head; 30. a third die head; 40. a fourth die head; 10a, a first coating slit; 10b, a second coating slit; 10c, a third coating slit; 100a, a first cavity; 100b, a second cavity; 100c, a third cavity; 20a, a first feed inlet; 20b, a second feed port; 20c, a third feed inlet; 50. a first dispensing valve; 60. a second dispensing valve; 50a, a first glue dispensing channel; 50b, a second dispensing channel; 60a, a third glue channel; 70. an adjustment assembly; 61. differentiating the head; 62. a coupling; 63. a T-shaped adjustment block; 101a, a containing groove; 80. a hinge assembly; 40a, narrow grooves; 90. a push-pull rod; 110. a back plate; 41. a deformation section; 42. a base portion.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a three-layer coating die head can be applied to coating unit, especially high temperature thick liquids coating unit, and here is not limited.
Referring to fig. 1 to 5, in an embodiment of the present invention, the triple-layer coating die includes a first die 10, a second die 20, a third die 30, and a fourth die 40; the second die head 20 is fixedly connected to the first die head 10, and a first shim is sandwiched between the first die head 10 and the second die head 20 to form a first coating slit 10a, the second die head 20 is provided with a first cavity 100a communicated with the first coating slit 10a and a first feed opening 20a communicated with the first cavity 100 a; the third die head 30 is fixedly connected with the second die head 20, a second gasket is clamped between the second die head 20 and the third die head 30 to form a second coating slit 10b, and the third die head 30 is provided with a second cavity 100b communicated with the second coating slit 10b and a second feeding hole 20b communicated with the second cavity 100 b; the fourth die head 40 is fixedly connected to the third die head 30, a third gasket is sandwiched between the third die head 30 and the fourth die head 40 to form a third coating slit 10c, and the fourth die head 40 is provided with a third cavity 100c communicated with the third coating slit 10c and a third feed opening 20c communicated with the third cavity 100 c.
In this embodiment, the first die head 10, the second die head 20, the third die head 30 and the fourth die head 40 may be sequentially connected and fixed from bottom to top via the back plate 110. The back sides of the first die head 10 and the second die head 20 can be provided with aligning surfaces, when the two aligning surfaces are on the same plane, the lips at the front ends of the first die head 10 and the second die head 20 are aligned, the two aligning surfaces can be provided with threaded holes, the back plate 110 is provided with matched threaded holes, the back plate 110 is locked on the aligning surfaces, and therefore when the two aligning surfaces are on the same plane, the lips at the front ends are ensured to be aligned through locking the back plate 110, and therefore coating quality is ensured. Similarly, the second die 20 and the third die 30, and the third die 30 and the fourth die 40 may be connected and fixed in the above manner.
In the technical scheme of the utility model, the three-layer coating die head comprises a first die head 10, a second die head 20, a third die head 30 and a fourth die head 40; the second die head 20 is fixedly connected with the first die head 10, a first gasket is clamped between the first die head 10 and the second die head 20 to form a first coating slit 10a, and the second die head 20 is provided with a first cavity 100a communicated with the first coating slit 10a and a first feed opening 20a communicated with the first cavity 100 a; the third die head 30 is fixedly connected with the second die head 20, a second gasket is clamped between the second die head 20 and the third die head 30 to form a second coating slit 10b, and the third die head 30 is provided with a second cavity 100b communicated with the second coating slit 10b and a second feeding hole 20b communicated with the second cavity 100 b; the fourth die head 40 is fixedly connected to the third die head 30, a third gasket is sandwiched between the third die head 30 and the fourth die head 40 to form a third coating slit 10c, and the fourth die head 40 is provided with a third cavity 100c communicated with the third coating slit 10c and a third feed opening 20c communicated with the third cavity 100 c. It can be understood that the slurry in the first cavity 100a is extrusion coated from the first coating slit 10a, the slurry in the second cavity 100b is extrusion coated from the second coating slit 10b, the slurry in the third cavity 100c is extrusion coated from the third coating slit 10c, and the slurry is extrusion coated on the base material of the backing roll, so that three-layer coating is realized, and the production efficiency is improved.
In some exemplary technologies, after coating is completed, insulating glue needs to be coated on two sides of a slurry coating layer by using a glue dispensing device, and the process steps are performed, so that the production period of the battery pole piece is long. Therefore, the utility model discloses coating die structure has further been improved to further promote the efficiency of manufacturing.
Referring to fig. 1-5, in an embodiment, the triple layer coating die may further include a first dispensing valve 50, the first dispensing valve 50 being fixed to the first die 10; the first die head 10 is provided with a first dispensing channel 50a communicated with the first dispensing valve 50, and the first gasket is provided with a first glue flowing channel communicated with the first dispensing channel 50 a; the second die head 20 is provided with a second dispensing channel 50b at a position corresponding to the first dispensing channel 50a, the first dispensing channel 50a and the second dispensing channel 50b are communicated or blocked by a first gasket, and the second gasket is provided with a second dispensing channel communicated with the second dispensing channel 50 b. Wherein, the insulating glue in the glue dispensing channel is mixed with the slurry at the terminal of the coating slit. Therefore, the multilayer dispensing operation can be carried out while the multilayer coating slurry is realized.
When only the upper layer dispensing is needed, the first pad can be set to have a structure without through holes (corresponding to the connection between the first dispensing channel 50a and the second dispensing channel 50b), so that the insulation paste in the first dispensing channel 50a can only flow into the first dispensing channel on the first pad, and only the upper layer dispensing is performed.
When dispensing is only needed to be performed on the upper layer and the middle layer at the same time, the first gasket is set to be a structure with a through hole (corresponding to the communication position of the first dispensing channel 50a and the second dispensing channel 50b), so that the insulating glue in the first dispensing channel 50a can enter the first dispensing channel of the first gasket, and can enter the second dispensing channel 50b of the second die head 20 through the through hole, and then enter the second dispensing channel of the second gasket, and dispensing of the upper layer and the middle layer is performed.
Further, referring to fig. 1 to 5, in an embodiment, the triple-layer coating die may further include a second dispensing valve 60, and the second dispensing valve 60 is fixed to the third die 30; the third die head 30 is provided with a third glue dispensing passage 60a communicated with the second glue dispensing valve 60, and the third gasket is provided with a third glue flowing passage communicated with the third glue dispensing passage 60 a. Therefore, three layers of glue dispensing can be realized, and the production and manufacturing efficiency is further improved.
In this embodiment, when dispensing of the lower layer is required, the second dispensing valve 60 of the third die head 30 is opened, and the insulating glue enters the glue flowing channel of the third gasket through the third dispensing channel 60a to perform dispensing of the lower layer.
In this embodiment, the back sides of the first die head 10, the second die head 20, and the third die head 30 are all provided with dispensing holes, the dispensing holes can be communicated with the corresponding coating slits through dispensing channels, the dispensing holes on the first die head 10 are communicated with the first coating slits 10a through the first dispensing channels 50a, the dispensing holes on the second die head 20 are communicated with the second coating slits 10b through the second dispensing channels 50b, the dispensing holes on the third die head 30 are communicated with the third coating slits 10c through the third dispensing channels 60a, dispensing valves are fixed at the dispensing holes for controlling the on-off or dispensing amount of dispensing, the insulating glue enters the glue flowing channels of the corresponding gaskets through the dispensing valves and the dispensing channels, and the glue flowing channels are arranged at the two sides of the coating slits for coating the edges of the two sides of the coating slurry with the insulating glue.
In order to improve coating uniformity, referring to fig. 1 and 4, in an embodiment, the triple-layer coating die may further include a plurality of adjusting members 70, the plurality of adjusting members 70 being disposed at intervals on the first die 10 and each protruding into the first coating slit 10a for adjusting the coating thickness by changing the coating areal density.
In this embodiment, the adjusting assembly 70 may include an actuating mechanism and a T-shaped adjusting block 63 connected to the actuating mechanism, the actuating mechanism is fixed on the first die head 10, the first die head 10 is provided with a slot communicated with the first coating slit 10a, and the T-shaped adjusting block 63 is inserted into the slot and disposed in the first coating slit 10 a.
Wherein, referring mainly to fig. 4, the actuator may be a manual actuator, and the manual actuator may include a differential head 61 and a coupling 62, and the differential head 61 is connected with a T-shaped adjusting block 63 through the coupling 62. In addition, the actuating mechanism can also be an electric actuating mechanism, and comprises a driving plate, a displacement sensor, a motor and a coupler 62, wherein the motor and the displacement sensor are respectively electrically connected with the driving plate, and the motor is connected with a T-shaped adjusting block 63 through the coupler 62; the displacement sensor is used for detecting a displacement signal of the T-shaped adjusting block 63; the driving plate is used for controlling the T-shaped adjusting block 63 to work according to the displacement signal.
Referring to fig. 4, in an embodiment, the first die head 10 is recessed with a receiving groove 101a for at least partially receiving the actuator, a cover plate covers a notch of the receiving groove 101a, and a baffle plate is disposed on the first die head 10 near the receiving groove 101 a. Wherein, when adopting the differential head 61, can hold shaft coupling 62 and partial differential head 61 in the recess, can reduce the space that the coating die head occupy, convenient transportation and installation simultaneously.
In this embodiment, the cover plate can also function as a fixed actuator, and the baffle plate can be used to prevent slurry or impurities from entering the adjusting assembly 70 and affecting the adjusting precision thereof.
Referring to fig. 1, in one embodiment, first die 10 and second die 20, second die 20 and third die 30, and third die 30 and fourth die 40 are all secured by bolts; the three-layer coating die head further comprises a hinge assembly 80, the hinge assembly 80 comprises four hinge blocks which are sequentially connected, the four hinge blocks are respectively fixed on the back sides of the first die head 10, the second die head 20, the third die head 30 and the fourth die head 40, the hinge blocks on the first die head 10 are provided with screw holes, and a stress rod is fixed in the screw holes.
In this embodiment, one, two or more hinge assemblies 80 may be disposed on the back side of the coating die, and each hinge assembly 80 may be formed by connecting four hinge blocks to each other, each hinge block corresponding to one die body, the hinge block being fixed to the back side of the die body, and the four hinge blocks from top to bottom respectively correspond to the first die 10, the second die 20, the third die 30 and the fourth die 40. If the first coating slit 10a is to be opened, the bolt between the first die head 10 and the second die head 20 is detached, and the first coating slit 10a is opened by pulling the force application rod; similarly, if it is necessary to open the second coating slit 10b, it is necessary to loosen the bolt between the second die 20 and the third die 30; if the third coating slit 10c is opened, the bolts between the third die head 30 and the fourth die head 40 need to be loosened, and the corresponding coating slit is opened by pulling the force application rod, so that the cavity or the coating slit is conveniently cleaned.
In order to improve the convenience of maintenance, referring to fig. 1, in an embodiment, a back side edge of the second die 20 protrudes from a projection surface of the first die 10 and a bolt hole of a bolt is opened at the protruding portion of the second die 20; the back side edge of the third die head 30 protrudes from the projection surface of the second die head 20, and the bolt hole of the bolt is arranged at the protruding part of the third die head 30; or the back side edge of the second die head 20 is provided with a chute for locking the bolt; the back side edge of the third die head 30 is provided with a chute for locking the bolt.
During maintenance, when a coating slit on a certain layer needs to be opened, corresponding bolts can be unlocked, and the bolts are sequentially unlocked without layer by layer, so that the maintenance period is greatly shortened.
Referring to fig. 4 to 6, in an embodiment, a narrow groove 40a extending along a height direction of the fourth die 40 is formed on a lower side of the fourth die 40, a portion of the fourth die 40 located on a front side of the narrow groove 40a is a deformation portion 41, a portion of the fourth die 40 located on a back side of the narrow groove 40a is a base portion 42, the base portion 42 is formed with a threaded hole extending along a width direction of the fourth die 40, a push-pull rod 90 is fixed in the threaded hole, and the push-pull rod 90 is used for pushing or pulling the narrow groove 40a to deform so as to adjust a lip size on a discharge side of the third coating slit 10 c.
In this embodiment, the push-pull rod 90 is pushed or pulled to jack up the deformation portion 41 or draw the deformation portion 41 closer, so as to achieve upward or downward warping of the lower die lip, further change the height of the lower coating slit, and adjust the thickness of the local coating, thereby improving the uniformity of the coating.
The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (10)
1. A three-layer coating die comprising:
a first die (10);
the second die head (20) is fixedly connected with the first die head (10), a first gasket is clamped between the first die head (10) and the second die head (20) to form a first coating slit (10a), and the second die head (20) is provided with a first cavity (100a) communicated with the first coating slit (10a) and a first feeding hole (20a) communicated with the first cavity (100 a);
the third die head (30) is fixedly connected with the second die head (20), a second gasket is clamped between the second die head (20) and the third die head (30) to form a second coating slit (10b), and the third die head (30) is provided with a second cavity (100b) communicated with the second coating slit (10b) and a second feeding hole (20b) communicated with the second cavity (100 b); and
the fourth die head (40) is fixedly connected with the third die head (30), a third gasket is clamped between the third die head (30) and the fourth die head (40) to form a third coating slit (10c), and the fourth die head (40) is provided with a third cavity (100c) communicated with the third coating slit (10c) and a third feeding port (20c) communicated with the third cavity (100 c).
2. The triple layer coating die of claim 1, further comprising a first dispensing valve (50), the first dispensing valve (50) being secured to the first die (10);
the first die head (10) is provided with a first dispensing channel (50a) communicated with the first dispensing valve (50), and the first gasket is provided with a first glue flowing channel communicated with the first dispensing channel (50 a);
the second die head (20) is provided with a second glue dispensing channel (50b) at a position corresponding to the first glue dispensing channel (50a), the first glue dispensing channel (50a) is communicated or blocked with the second glue dispensing channel (50b) through a first gasket, and the second gasket is provided with a second glue flowing channel communicated with the second glue dispensing channel (50 b).
3. The triple layer coating die of claim 2, further comprising a second dispensing valve (60), the second dispensing valve (60) being secured to the third die (30);
the third die head (30) is provided with a third glue dispensing channel (60a) communicated with the second glue dispensing valve (60), and the third gasket is provided with a third glue flowing channel communicated with the third glue dispensing channel (60 a).
4. The triple layer coating die according to claim 1, further comprising a plurality of regulating members (70), the plurality of regulating members (70) being disposed at intervals on the first die (10) and each protruding into the first coating slit (10a) for regulating the coating thickness by changing the coating areal density.
5. The triple-layer coating die head according to claim 4, wherein the adjusting assembly (70) comprises an actuator and a T-shaped adjusting block (63) connected with the actuator, the actuator is fixed on the first die head (10), the first die head (10) is provided with a slot communicated with the first coating slit (10a), and the T-shaped adjusting block (63) is inserted into the slot and is arranged in the first coating slit (10 a).
6. The triple layer coating die according to claim 5, wherein the actuator comprises a micro-dividing head (61) and a coupling (62), the micro-dividing head (61) being connected to the T-shaped adjustment block (63) by the coupling (62); or
The actuating mechanism comprises a driving plate, a displacement sensor, a motor and a coupler (62), the motor and the displacement sensor are respectively electrically connected with the driving plate, and the motor is connected with the T-shaped adjusting block (63) through the coupler (62); the displacement sensor is used for detecting a displacement signal of the T-shaped adjusting block (63); the driving plate is used for controlling the T-shaped adjusting block (63) to work according to the displacement signal.
7. The triple-layer coating die according to claim 5, wherein the first die (10) is recessed with a receiving groove (101a) for at least partially receiving the actuator, the notch of the receiving groove (101a) is covered with a cover plate, and the first die (10) is provided with a baffle plate at a position close to the receiving groove (101 a).
8. The triple-layer coating die of claim 1, wherein the first die (10) and the second die (20), the second die (20) and the third die (30), and the third die (30) and the fourth die (40) are all fixed by bolt locks;
the three-layer coating die head further comprises a hinge assembly (80), the hinge assembly (80) comprises four hinge blocks which are sequentially connected, the four hinge blocks are respectively fixed on the back sides of the first die head (10), the second die head (20), the third die head (30) and the fourth die head (40), the hinge blocks on the first die head (10) are provided with screw holes, and reinforcing rods are fixed in the screw holes.
9. The triple-layer coating die of claim 8, wherein the back side edge of the second die (20) protrudes from the projection surface of the first die (10) and the bolt hole of the bolt is opened at the protruding portion of the second die (20); the back side edge of the third die head (30) protrudes out of the projection surface of the second die head (20), and the bolt hole of the bolt is arranged at the protruding part of the third die head (30); or
The back side edge of the second die head (20) is provided with a chute for locking the bolt; the back side edge of the third die head (30) is provided with a chute for locking the bolt.
10. The triple-layer coating die of claim 1, wherein the lower side of the fourth die (40) is provided with a narrow groove (40a) extending along the height direction thereof, the portion of the fourth die (40) located at the front side of the narrow groove (40a) is a deformation portion (41), the portion of the fourth die (40) located at the back side of the narrow groove (40a) is a base portion (42), the base portion (42) is provided with a threaded hole extending along the width direction of the fourth die (40), a push-pull rod (90) is fixed in the threaded hole, and the push-pull rod (90) is used for pushing or pulling the narrow groove (40a) to deform so as to adjust the lip size of the discharge side of the third coating slit (10 c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220567151.5U CN217094182U (en) | 2022-03-11 | 2022-03-11 | Three-layer coating die head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220567151.5U CN217094182U (en) | 2022-03-11 | 2022-03-11 | Three-layer coating die head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217094182U true CN217094182U (en) | 2022-08-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116371674A (en) * | 2023-03-17 | 2023-07-04 | 上川精密科技(无锡)有限公司 | Adjusting structure for lower layer coating surface density of double-layer coating die head of lithium battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116371674A (en) * | 2023-03-17 | 2023-07-04 | 上川精密科技(无锡)有限公司 | Adjusting structure for lower layer coating surface density of double-layer coating die head of lithium battery |
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