CN218637787U

CN218637787U - Coating die head

Info

Publication number: CN218637787U
Application number: CN202223013935.2U
Authority: CN
Inventors: 陈贵山; 杨军; 张挺挺; 杨涛玮; 李洋; 彭建林
Original assignee: Shenzhen Manst Technology Co Ltd
Current assignee: Shenzhen Manst Technology Co Ltd
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-03-17
Anticipated expiration: 2032-11-11

Abstract

The utility model provides a coating die head belongs to coating machine technical field, include: the upper die head is provided with a feed inlet, a main cavity and an auxiliary cavity, a plurality of groups of material supplementing channels are arranged in the upper die head, one end of each material supplementing channel is communicated with the auxiliary cavity, the other end of each material supplementing channel is communicated with a slurry feeding system, a material supplementing valve assembly used for controlling the on-off of each material supplementing channel is arranged on each material supplementing channel, a plurality of groups of pressure detection pieces are arranged in the lower die head, and detection ends of the pressure detection pieces are arranged in the auxiliary cavity and used for detecting the slurry pressure of the corresponding part of each material supplementing channel in the auxiliary cavity. The utility model provides a coating die head, pressure detection spare detect pressure inequality for a moment, the feed supplement valve subassembly is opened for feed supplement passageway intercommunication, slurry feeding system pass through feed supplement passageway with thick liquids and flow in vice chamber, carry out the compensation of thick liquids, realize vice chamber pressure homogeneous everywhere, guaranteed the wet film thickness homogeneous that the coating came out, make coating quality better.

Description

Coating die head

Technical Field

The utility model relates to a coating machine technical field, concretely relates to 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. The coating die head generally comprises an upper die head, a lower die head and a gasket clamped between the upper die head and the lower die head, wherein the lower die head is provided with a cavity, and slurry flows in from a feed inlet, is extruded from a coating slit through the cavity and is coated on a base material.

The cavity of the coating die head is generally designed to be elongated, the feed inlet is arranged in the middle of the cavity, and when slurry flows into the cavity from the feed inlet, the pressure of the cavity is gradually reduced from the middle to two ends, so that the thickness of a coated wet film is not uniform, the middle is thick, and the two sides are thin, thereby affecting the coating quality.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model discloses the pressure difference that the thick liquids lead to coating the wet film thickness that comes out is inhomogeneous when solving the coating die head coating among the prior art in the cavity, influences coating quality's defect to a coating die head is provided.

In order to solve the technical problem, the utility model provides a coating die head, locate including last die head, lower die head and clamp go up the die head with coating gasket between the die head down, it establishes the formation coating slit to go up to enclose between die head, coating gasket and the lower die head, the die head is provided with feed inlet, main cavity and vice chamber down, feed inlet, main cavity and vice chamber communicate in proper order, vice chamber with coating slit intercommunication, coating die head still includes:

the material supplementing channels are arranged on the upper die head, the material supplementing channels are sequentially arranged along the length direction of the outlet of the coating slit, one end of each material supplementing channel is communicated with the auxiliary cavity, and the other end of each material supplementing channel is communicated with the slurry feeding system; the feed supplement channel is provided with a feed supplement valve assembly for controlling the on-off of the feed supplement channel;

and the pressure detection pieces are in one-to-one correspondence with the material supplementing channels and used for detecting the slurry pressure in the auxiliary cavity corresponding to the material supplementing channels.

Preferably, the feed channels are uniformly arranged along the length of the outlet of the coating slot.

Preferably, the bottom surface of the auxiliary cavity is provided with a mounting hole, and the pressure detection piece is arranged in the mounting hole.

Preferably, a sealing member for preventing the slurry from entering the mounting hole is provided between the mounting hole and the pressure detecting member.

Preferably, the sealing element is an elastic sleeve ring sleeved on the periphery of the pressure detection element.

Preferably, the coating gasket is provided with a flow blocking sheet, the flow blocking sheet is provided with a dispensing flow channel and a dispensing outlet, and the dispensing flow channel is communicated with the dispensing outlet;

the coating die head further comprises a dispensing assembly, and the dispensing assembly comprises:

the dispensing channel is arranged in the upper die head, one end of the dispensing channel is communicated with the dispensing flow channel on the coating gasket, and the other end of the dispensing channel is communicated with the insulating glue supply system;

and the dispensing valve assembly is arranged on the dispensing channel and used for controlling the on-off of the dispensing channel.

Preferably, the feed valve assembly and the dispensing valve assembly are both pneumatic valves.

Preferably, the dispensing channel and the feeding channel are inclined towards the same direction.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a coating die head, set up the feed supplement passageway of multiunit and vice chamber intercommunication in last die head, set up multiunit pressure detection spare in the die head down and be arranged in detecting the thick liquids pressure in the vice chamber, and pressure detection spare and feed supplement passageway one-to-one, when detecting pressure inequality, feed supplement valve subassembly is opened, make feed supplement passageway intercommunication, thick liquids feed system passes through feed supplement passageway with thick liquids and flows in vice chamber, carry out the compensation of thick liquids, realize vice chamber pressure homogeneous everywhere, the surface density homogeneity of coating has been improved, the wet film thickness homogeneity of coating coming out has been guaranteed, make the coating quality better.

2. The utility model provides a feed supplement passageway evenly sets up on the export length direction of coating slit for detect the pressure value of more multiple spot in the vice chamber, guaranteed the accuracy that detects, compensate when pressure is unusual, guaranteed the homogeneous of coating wet film thickness.

3. The utility model provides an vice bottom of cavity surface in the lower die head is provided with the mounting hole for installation pressure detection spare, only need with the sense terminal of pressure detection spare locate vice chamber can, need not to put into all vice chambeies with pressure detection spare and detect, avoid causing the influence to the thick liquids coating in vice chamber.

4. The utility model provides a set up the sealing member among mounting hole and the pressure detection spare for prevent during thick liquids get into the mounting hole, prevent that thick liquids from getting into the mounting hole and causing the jam.

5. The utility model provides a sealing member is the elasticity lantern ring, simple to operate, and it is convenient to dismantle.

6. The utility model provides a coating die head is still including the point subassembly of gluing, and the insulating glue flows into the point on the coating gasket from the point passageway of gluing and glues the runner, then coats on the substrate, has realized when coating thick liquids, coats the insulating glue on the substrate at thick liquids edge.

7. The utility model provides a feed supplement valve module and point gluey valve module are the pneumatic valve, and control is accurate, and the reaction is sensitive.

8. The utility model provides a passageway is glued to point and feed supplement passageway all inclines towards same direction, and processing is convenient for feed supplement valve module and some glue valve module all locate the same one side of last die head, die head space on the rational utilization, the occupation space of reduction equipment.

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 embodiments or the technical solutions in 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of one embodiment of a coating die provided in an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional structural view of the feed channel of FIG. 1;

FIG. 3 is a schematic view of the coated gasket of FIG. 1;

fig. 4 is a schematic cross-sectional structure view of the dispensing passage in fig. 1.

Description of reference numerals:

1. an upper die head; 2. a lower die head; 3. coating a gasket; 4. coating a slit; 5. a feed inlet; 6. a main chamber; 7. a secondary chamber; 8. a feed supplement channel; 9. a feed valve assembly; 10. a pressure detecting member; 11. mounting holes; 12. a seal member; 13. dispensing components; 14. a dispensing channel; 15. a dispensing valve assembly; 16. a flow blocking sheet; 17. dispensing flow channels; 18. and a dispensing outlet.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The coating die head provided by the embodiment is suitable for coating equipment such as a coating machine.

As shown in fig. 1 to 3, a specific embodiment of the coating die head provided for this embodiment includes an upper die head 1, a lower die head 2, and a coating pad 3 clamped between the upper die head 1 and the lower die head 2, a coating slit 4 is defined between the upper die head 1, the coating pad 3, and the lower die head 2, the lower die head 2 is provided with a feed inlet 5, a main cavity 6, and a sub-cavity 7, the feed inlet 5, the main cavity 6, and the sub-cavity 7 are sequentially communicated, the sub-cavity 7 is communicated with the coating slit 4, the upper die head 1 is provided with a plurality of sets of feed supplement channels 8, the plurality of sets of feed supplement channels 8 are sequentially arranged along the length direction of the outlet of the coating slit 4, so as to implement slurry compensation at a plurality of locations, one end of each feed supplement channel 8 is communicated with the sub-cavity 7, and the other end of each feed supplement channel 8 is communicated with a slurry supply system; the feeding channel 8 is provided with a feeding valve assembly 9 for controlling the on-off of the feeding channel 8, the lower die head 2 is provided with a plurality of groups of pressure detection pieces 10, the detection ends of the pressure detection pieces 10 are arranged in the auxiliary cavity 7, the pressure detection pieces 10 correspond to the feeding channels 8 one by one, the pressure detection pieces 10 are used for detecting the slurry pressure at the positions, corresponding to the feeding channels 8, in the auxiliary cavity 7, when one group of pressure detection pieces 10 detect that the pressure value at the detection points is small, the corresponding feeding valve assembly 9 is opened to enable the feeding channels 8 to be communicated, the slurry supply system enables the slurry to flow into the auxiliary cavity 7 through the feeding channels 8 to compensate the slurry, the pressure uniformity at each position of the auxiliary cavity 7 is achieved, the coating surface density uniformity is improved, the coating thickness uniformity of the coated wet film is guaranteed, and the coating quality is better. The pressure detecting member 10 may be a pressure sensor.

The feeding channels 8 provided by the embodiment are uniformly arranged in the length direction of the outlet of the coating slit 4, so that the detection accuracy is ensured, the compensation is carried out when the pressure is abnormal, and the uniformity of the thickness of a coating wet film is ensured. In addition, as an alternative embodiment, the feed channels 8 disposed on both sides of the coating slit 4 may be more compact than the feed channel 8 disposed in the middle of the coating slit 4, and the feed channels 8 may be disposed at places where the thickness unevenness is likely to occur according to actual coating conditions.

As shown in fig. 2, in the coating die head provided in the present embodiment, the bottom surface of the sub-cavity 7 is provided with a mounting hole 11, and the pressure detection member 10 is provided in the mounting hole 11. The mounting hole 11 is used for installing the pressure detection piece 10, and only the detection end of the pressure detection piece 10 needs to be arranged in the auxiliary cavity 7, so that the pressure detection piece 10 does not need to be completely placed in the auxiliary cavity 7 for detection, and the influence of the too large occupied space on slurry coating in the auxiliary cavity 7 is avoided. The mounting hole 11 can be a through hole, and the pressure detection piece 10 is directly inserted from the bottom surface during installation, so that the mounting is convenient, the dismounting and the replacement are convenient, and the original environment of the auxiliary cavity 7 is not influenced. In addition, as an alternative embodiment, the mounting hole 11 may be provided on the side wall of the lower die 2, and the detection end of the pressure detection piece 10 may be provided in the bottom surface of the sub-chamber 7.

A sealing member 12 for preventing slurry from entering the installation hole 11 is disposed between the installation hole 11 and the pressure detection member 10, and the sealing member 12 provided in this embodiment is an elastic collar sleeved on the periphery of the pressure detection member 10. The sealing element 12 is used for preventing slurry from entering the mounting hole 11, preventing the slurry from entering the mounting hole 11 to cause blockage, and the elastic lantern ring is convenient to install and disassemble. In addition, as an alternative embodiment, the sealing member 12 may be a rubber ring or a silicone ring.

As shown in fig. 3 and 4, in the coating die head provided in this embodiment, the coating shim 3 is provided with a flow blocking sheet 16, the flow blocking sheet 16 is provided with a dispensing flow channel 17 and a dispensing outlet 18, and the dispensing flow channel 17 is communicated with the dispensing outlet 18; the coating die head provided by the embodiment further comprises a dispensing assembly 13, the dispensing assembly 13 comprises a dispensing channel 14 and a dispensing valve assembly 15, the dispensing channel 14 is arranged in the upper die head 1, one end of the dispensing channel 14 is communicated with a dispensing flow channel 17 on the coating gasket 3, the other end of the dispensing channel 14 is communicated with an insulating glue supply system, and the dispensing valve assembly 15 is arranged on the dispensing channel 14 and used for controlling the on-off of the dispensing channel 14. When the dispensing operation is performed, the dispensing valve assembly 15 is opened, so that the dispensing passage 14 is communicated, the insulating glue in the insulating glue supply system enters the dispensing flow passage 17 of the flow blocking piece 16 through the dispensing passage 14, and then is coated on the base material from the dispensing outlet 18, and the insulating glue is coated on the base material on two sides of the paste while the paste is coated.

The feed supplement valve assembly 9 and the dispensing valve assembly 15 in the coating die head provided by the embodiment are pneumatic valves, so that the control is accurate, and the reaction is sensitive. In addition, as an alternative embodiment, the feed valve assembly 9 and the dispensing valve assembly 15 may be an electric valve, an electromagnetic valve, or the like.

As shown in fig. 1 to 4, in the coating die head provided in this embodiment, the dispensing channel 14 and the feeding channel 8 are inclined toward the same direction, so that the arrangement and the processing are convenient, the space of the upper die head 1 is reasonably utilized, and the occupied space of the equipment is reduced. In addition, as an alternative embodiment, the dispensing channel 14 and the feeding channel 8 may be adjusted in position according to the installation space of the actual device.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.

Claims

1. The utility model provides a coating die head, includes that upper die head (1), lower die head (2) and clamp are located upper die head (1) with coating gasket (3) between lower die head (2), enclose between upper die head (1), coating gasket (3) and lower die head (2) and establish and form coating slit (4), lower die head (2) are provided with feed inlet (5), main cavity (6) and vice chamber (7), feed inlet (5), main cavity (6) and vice chamber (7) communicate in proper order, vice chamber (7) with coating slit (4) intercommunication, its characterized in that still includes:

the feed supplement channels (8) are provided with a plurality of groups, the feed supplement channels (8) are arranged on the upper die head (1), the feed supplement channels (8) are sequentially arranged along the length direction of the outlet of the coating slit (4), one end of each feed supplement channel (8) is communicated with the auxiliary cavity (7), and the other end of each feed supplement channel (8) is communicated with a slurry supply system; a feed supplement valve assembly (9) for controlling the on-off of the feed supplement channel (8) is arranged on the feed supplement channel (8);

the pressure detection pieces (10) are provided with a plurality of groups, the detection ends of the pressure detection pieces are arranged in the auxiliary cavity (7), and the pressure detection pieces (10) correspond to the material supplementing channels (8) one by one and are used for detecting the slurry pressure in the auxiliary cavity (7) corresponding to the material supplementing channels (8).

2. The coating die according to claim 1, characterized in that the feed channels (8) are arranged uniformly along the length of the outlet of the coating slot (4).

3. The coating die according to claim 1, characterized in that the bottom surface of the auxiliary cavity (7) is provided with a mounting hole (11), and the pressure detection member (10) is provided in the mounting hole (11).

4. The coating die according to claim 3, characterized in that a seal (12) for preventing the slurry from entering into the mounting hole (11) is provided between the mounting hole (11) and the pressure detecting member (10).

5. The coating die according to claim 4, wherein the sealing member (12) is an elastic collar fitted around the outer periphery of the pressure detecting member (10).

6. The coating die head according to any one of claims 1 to 5, characterized in that the coating pad (3) is provided with a flow baffle (16), the flow baffle (16) is provided with a dispensing flow passage (17) and a dispensing outlet (18), and the dispensing flow passage (17) is communicated with the dispensing outlet (18);

the coating die head further comprises a dispensing assembly (13), wherein the dispensing assembly (13) comprises:

the dispensing channel (14) is arranged in the upper die head (1), one end of the dispensing channel (14) is communicated with a dispensing flow channel (17) on the coating gasket (3), and the other end of the dispensing channel (14) is communicated with an insulating glue supply system;

and the dispensing valve assembly (15) is arranged on the dispensing channel (14) and is used for controlling the on-off of the dispensing channel (14).

7. Coating die according to claim 6, characterized in that the feed valve assembly (9) and the glue valve assembly (15) are both pneumatic valves.

8. The coating die according to claim 6, characterized in that the dispensing channel (14) and the feed channel (8) are both inclined towards the same direction.