CN210614182U

CN210614182U - Coating die head

Info

Publication number: CN210614182U
Application number: CN201920555735.9U
Authority: CN
Inventors: 彭建林; 王精华; 刘宗辉; 陈贵山
Original assignee: Shenzhen Manst Technology Co Ltd
Current assignee: Shenzhen Manst Technology Co Ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-05-26
Anticipated expiration: 2029-04-23

Abstract

The utility model provides a coating die head. The utility model comprises an upper die and a lower die, wherein a pressure sensor accommodating cavity is arranged in the upper die, and at least two pressure sensors are arranged in the pressure sensor accommodating cavity; the lower die comprises a fluid distribution cavity, and the fluid distribution cavity is communicated with the pressure sensor accommodating cavity; a slit gap is formed between the upper die and the lower die. The utility model discloses a coating die head is in under the condition that there is the pressure differential in the different regions in fluid distribution chamber, through at least two pressure sensor is right pressure in the different regions in fluid distribution chamber carries out real-time detection, compares real-time detection's pressure and known pressure standard value, according to the comparison result to the slit clearance of different regions between mould and the lower mould is gone up in the regulation, realizes in the different regions the regulation of slit clearance's width has avoided the regulation time overlength, causes the thick liquids and is scribbled the waste of base material, has reduced the cost of production, has improved the precision and the efficiency of coating.

Description

Coating die head

Technical Field

The utility model belongs to the field of coating machine and coating machine accessory, more specifically say, relate to a coating die head.

Background

The coating machine is mainly used for the surface coating process production of films, paper and the like, and the coating machine is used for coating a layer of glue, paint or printing ink with characteristic functions on a coiled substrate, drying and then rolling. The special multifunctional coating die head is adopted, and the surface coating production in various forms can be realized. The coating machine comprises a rolling section, a coating section, a baking section, an unreeling section and the like, wherein the coating die head is arranged on the coating section of the coating machine, and slurry is conveyed to the coating die head through a conveying system.

The coating die is used to spray the slurry provided by the delivery system directly onto the substrate. The existing coating die head comprises an upper die, a lower die and a gasket clamped between the upper die and the lower die. The coating die head is influenced by the viscosity, surface tension and the like of the coating in the using process, so that the extending amount of the coating is different, and the coating width is different. The width of the existing coating layer can only be adjusted by detecting the width of the dry film for multiple times after drying, so that the adjustment time is too long, the waste of slurry and coated base materials is caused, the production cost is increased, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coating die head to solve the technical problem who exists among the prior art. The coating die head can detect the pressure in different areas of the fluid distribution cavity through the at least two pressure sensors under the condition that pressure difference exists in different areas of the fluid distribution cavity, the pressure in the different areas of the fluid distribution cavity is detected in real time through the at least two pressure sensors, the pressure detected in real time is compared with a known pressure standard value, slit gaps in different areas between the upper die and the lower die are adjusted according to a comparison result, the adjustment of the width of the slit gaps in the different areas is achieved, the waste of slurry and a coated base material due to the fact that the adjusting time is too long is avoided, the production cost is reduced, and the coating precision and efficiency are improved.

In order to achieve the above object, the utility model adopts the following technical scheme: providing a coating die comprising: the device comprises an upper die and a lower die, wherein at least two pressure sensor accommodating cavities are formed in the upper die, and at least two pressure sensors are arranged in the pressure sensor accommodating cavities; the lower die comprises a fluid distribution cavity, and the fluid distribution cavity is communicated with the pressure sensor accommodating cavity; a slit gap is formed between the upper die and the lower die.

Furthermore, the upper die is also internally provided with an adjusting groove with an outward opening and at least two adjusting through holes, and at least two adjusting mechanisms for adjusting the height of the adjusting groove penetrate through the at least two adjusting through holes.

Further, each pressure sensor corresponds to at least two adjusting mechanisms; the adjusting mechanism comprises a first inner hexagon screw and a second inner hexagon screw, the first inner hexagon screw penetrates through the adjusting through hole, a mounting hole is formed in the first inner hexagon screw, and the second inner hexagon screw passes through the mounting hole and is in threaded connection with the first inner hexagon screw.

Further, the fluid distribution chamber is a curved structure, and the curved structure comprises a middle end and side ends positioned at two sides of the middle end.

Further, the section of the middle end is in a constant U-shaped structure, and the diameter and the area of the constant U-shaped structure are constant; the section of the side end is of a descending U-shaped structure, and the diameter and the area of the descending U-shaped structure are gradually reduced.

Further, go up be provided with on the mould and follow go up two at least first through-holes that mould thickness direction runs through, be provided with on the gasket with two at least coaxial second through-holes that first through-hole corresponds, be provided with on the lower mould with two at least coaxial screw holes that first through-hole corresponds, two at least screws pass in proper order correspond first through-hole second through-hole and threaded connection correspond in the screw hole.

Furthermore, a gasket is clamped between the upper die and the lower die; the gasket comprises a fixing plate, a first side plate and a second side plate, wherein the first side plate and the second side plate are arranged at two ends of the fixing plate.

Further, the upper die further comprises a squeezing surface, the squeezing surface is attached to the gasket, and when the opening height of the adjusting groove is changed, the squeezing surface generates plastic deformation to change the width of the slit gap.

Furthermore, a feeding channel communicated with the fluid distribution cavity is arranged in the lower die; the feed channel is located the bottom of fluid distribution chamber, feed channel includes a feed inlet, the feed inlet is located lower mould center pin position.

Furthermore, each pressure sensor accommodating cavity is correspondingly provided with a circuit board, and the circuit board is electrically connected with the pressure sensors.

The utility model provides a coating die head's beneficial effect lies in: compared with the prior art, the coating die head comprises an upper die and a lower die, wherein at least two pressure sensor accommodating cavities are arranged in the upper die, and at least two pressure sensors are arranged in the pressure sensor accommodating cavities; the lower die comprises a fluid distribution cavity, and the fluid distribution cavity is communicated with the pressure sensor accommodating cavity; a slit gap is formed between the upper die and the lower die. Like this, two at least pressure sensor can detect the pressure in the different regions of fluid distribution chamber under the condition that there is the pressure differential in the different regions of fluid distribution chamber, through two at least pressure sensor is right the pressure in the different regions of fluid distribution chamber carries out real-time detection, compares the pressure that detects in real time with known pressure standard value, according to the result of comparison to adjust the slit clearance of going up different regions between mould and the lower mould, realize to in the different regions the regulation of the width in slit clearance, avoided the regulation time overlength, cause the waste of thick liquids and quilt coating base stock, reduced the cost of production, improved the precision and the efficiency of coating.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic perspective view of a coating die of the present invention;

fig. 2 is a right side view of a coating die of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

fig. 4 is a schematic view of an exploded structure of the coating die of the present invention;

FIG. 5 is a schematic view of a partial disassembly mechanism of an upper die of the coating die of the present invention;

FIG. 6 is a front view of an adjustment mechanism for a coating die according to the present invention;

FIG. 7 is a cross-sectional view of the disassembled structure at E-E in FIG. 6;

FIG. 8 is a top view of a lower die of the coating die of the present invention;

FIG. 9 is a cross-sectional view taken at B-B, C-C and D-D of FIG. 8;

FIG. 10 is a top view of an exploded view of the coating die of the present invention with its lower die removed;

FIG. 11 is a schematic view of a shim for a coating die according to the present invention;

FIG. 12 is an enlarged view taken at a point a in FIG. 1;

FIG. 13 is an enlarged view of FIG. 1 at b;

fig. 14 is an enlarged view of fig. 3 at c.

Wherein, in the figures, the respective reference numerals:

1-upper mould; 11-mounting a mold cover; 12-an adjustment tank; 13-a pressure sensor receiving cavity; 131-a pressure sensor; 14-extrusion surface; 15-a first via; 16-adjusting the through hole;

2-an adjustment mechanism; 21-a first socket head cap screw; 211-mounting holes; 22-a second socket head cap screw;

3, lower die; 31-a feed channel; 32-a feed inlet; 33-a fluid dispensing chamber; 331-middle; 332-side end; 34-a threaded hole; 35-glue homogenizing groove;

5-a screw; 6-a gasket; 61-fixing plate; 62-a first side panel; 63-a second side panel; 64-a second via; 7-slit gap; 8-circuit board.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured" or "disposed" to another element, it can be directly on the other element or be indirectly connected to the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "width," "thickness," "upper," "lower," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are 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 one or more of that feature. In the description of the present invention, "at least two" means two or more unless specifically limited otherwise.

Referring to fig. 1, 2 and 3, a coating die head includes an upper die 1 and a lower die 3, wherein at least two pressure sensor accommodating cavities 13 are disposed in the upper die 1, and at least two pressure sensors 131 are disposed in the pressure sensor accommodating cavities 13.

The lower die 3 includes a fluid distribution chamber 33, and the fluid distribution chamber 33 communicates with the pressure sensor accommodation chamber 13. A slit gap 7 is formed between the upper die 1 and the lower die 3.

The coating die head is influenced by the viscosity, surface tension and the like of the coating in the using process, so that pressure difference exists in different areas of the fluid distribution cavity 33, the pressure in different areas of the fluid distribution cavity 33 can be detected through at least two pressure sensors 131, and the pressure in different areas of the fluid distribution cavity 33 can be detected through at least two pressure sensors 131 in real time.

Preferably, when the pressure sensor 131 detects the pressure in different areas, the real-time detected pressure detected by the pressure sensor 131 is compared with a known standard pressure value, and according to the comparison result, the width of the slit gap 7 in different areas can be adjusted. Thus, the width of the slit gap 7 in different areas can be adjusted, waste caused by slurry and coated base materials is avoided, and coating precision and efficiency are improved.

Further, referring to fig. 3, an adjusting groove 12 with an outward opening and at least two adjusting through holes 16 are further disposed in the upper die 1, and at least two adjusting mechanisms 2 for adjusting the height of the adjusting groove 12 penetrate through the at least two adjusting through holes 16. Further, at least two adjusting mechanisms 2 are embedded in the upper die 1. Preferably, at least two of the adjusting mechanisms 2 adjust the opening heights of the adjusting grooves 12 in different areas.

The opening direction of the adjusting groove 12 is outward in the embodiment, and further, the opening direction of the adjusting groove 12 is perpendicular to the arrangement direction of at least two adjusting mechanisms 2 embedded in the upper die 1 in the embodiment. The arrangement mode is designed according to the installation space, so that the adjustment accuracy of at least two adjusting mechanisms 2 is improved, the opening height of the adjusting groove 12 can be easily deformed, and the adjustment efficiency is improved. The opening direction of the adjusting groove 12 and the arrangement direction of at least two adjusting mechanisms 2 in the above embodiments are only used as an example, and do not mean that the opening direction of the adjusting groove 12 and the arrangement direction of the adjusting mechanisms 2 can only be perpendicular to each other, and other angles can be arranged.

Further, referring to fig. 3, 4 and 5, each of the pressure sensors 131 corresponds to at least two of the adjusting mechanisms 2. Thus, the accuracy of detection of the adjusting mechanism 2 can be improved, and detection errors can be reduced.

Referring to fig. 3, 6 and 7, the adjusting mechanism 2 includes a first socket head cap screw 21 and a second socket head cap screw 22, the first socket head cap screw 21 passes through the adjusting through hole 16, a mounting hole 211 is formed in the first socket head cap screw 21, and the second socket head cap screw 22 is in threaded connection with the first socket head cap screw 21 through the mounting hole 211. Preferably, each adjusting through hole 16 is correspondingly provided with one adjusting mechanism 2, and the first socket head cap screws 21 and the second socket head cap screws 22 are in one-to-one correspondence.

Further, the first socket head cap screw 21 is larger than the second socket head cap screw 22, and the head of the second socket head cap screw 22 is embedded in and screwed with the first socket head cap screw 21. The first inner hexagon screw 21 is embedded in the upper die 1 arranged on the adjusting groove 12; the head of the second socket head cap screw 22 is embedded in the first socket head cap screw 21, and the tail of the second socket head cap screw 22 passes through the adjusting groove 12 and is embedded in the upper die 1 arranged below the adjusting groove 12. When the first socket head cap screw 21 is adjusted, the second socket head cap screw 22 is rotated with the rotation of the first socket head cap screw 21, thereby achieving fine adjustment of the second socket head cap screw 22.

The first socket head cap screw 21 is rotated to rotate the second socket head cap screw 22, and the opening of the adjustment groove 12 is contracted or expanded, so that the pressing surface 14 is pressed or stretched.

The adjusting mechanism 2 provided in the present embodiment includes a first socket head cap screw 21 and a second socket head cap screw 22 screwed with the first socket head cap screw 21, as an example only; in another embodiment, the adjusting mechanism 2 may further include a cylinder and a compression spring sleeved at the end of the piston of the cylinder; in another embodiment, the adjusting mechanism 2 may further include a lifting screw and a handle for adjusting the lifting screw, and the above embodiments should not be construed as limiting the embodiments of the adjusting mechanism 2 to these descriptions.

Preferably, the distribution distance of the pressure sensors 131 is less than 100mm, and the accuracy of the pressure sensors 131 is greater than or equal to 250pa, so that the accuracy and the efficiency of the detection of the pressure sensors 131 are improved.

Further, referring to fig. 4 again, the fluid distribution chamber 33 has a curved structure, and the curved structure includes a middle end 331 and side ends 332 disposed at two sides of the middle end 331.

Further, referring to fig. 8 and 9, the cross section of the middle end 331 is a constant "U" shape structure, and the diameter and the area of the constant "U" shape structure are constant. The cross section of the side end 332 is of a decreasing U-shaped structure, and the diameter and the area of the decreasing U-shaped structure are gradually decreased. The curved structure of the fluid distribution chamber 33 is beneficial to the fluid circulation in the fluid distribution chamber 33, so that there is no dead space for the fluid circulation.

Further, referring to fig. 4 and 10, the upper die 1 is provided with at least two first through holes 15 penetrating along the thickness direction of the upper die 1, the gasket 6 is provided with at least two coaxial second through holes 64 corresponding to the first through holes 15, the lower die 3 is provided with at least two coaxial threaded holes 34 corresponding to the first through holes 15, and at least two screws 5 sequentially penetrate through the corresponding first through holes 15 and the second through holes 64 and are in threaded connection with the corresponding threaded holes 34.

The above embodiment provides the coating die in which the upper die 1, the spacer 6 and the lower die 3 are fixed by tightening at least two of the screws 5 to lock the entire coating die during assembly.

Further, referring to fig. 4 and 8 again, a glue equalizing groove 35 is further disposed on the lower mold 3, and the glue equalizing groove 35 is disposed on the same side of the adjusting groove 12 and parallel to the fluid distribution chamber 33. This ensures that the dope is stabilized in the dope bath 35, and that the dope flows uniformly to each portion in the fluid distribution chamber 33. The coating material flows through the fluid distribution chamber 33 under pressure and then through the glue homogenizing groove 35; however, a lateral pressure difference is generated when the coating material flows through the fluid distribution chamber 33, and thus, the leveling groove 35 is provided to reduce the lateral pressure difference.

Further, referring to fig. 4 and 11, a gasket 6 is interposed between the upper die 1 and the lower die 3. The gasket 6 includes a fixed plate 61, and a first side plate 62 and a second side plate 63 disposed at both ends of the fixed plate 61.

Further, referring to fig. 12, 13 and 14, the gaps between the upper die 1 and the lower die 3 and between the first side plate 62 and the second side plate 63 are slit gaps 7. The distance from the upper die 1 to the lower die 3 is the width of the slit gap 7, and the distance from the first side plate 62 to the second side plate 63 is the width of the slit gap 7.

Preferably, the first side plate 62 and the second side plate 63 are symmetrically arranged, so that both ends of the width of the slit gap 7 are symmetrical, and the width of the slit gap 7 is the width of a coating formed by the coating extruded from the slit gap 7.

Further, referring to fig. 10 again, the upper die 1 further includes a pressing surface 14, the pressing surface 14 is attached to the gasket 6, and when the opening height of the adjusting groove 12 changes, the pressing surface 14 is plastically deformed to change the width of the slit gap 7.

The width of the slit gap 7 proposed in the present embodiment refers to a coating width formed by the coating material extruded from the slit gap 7. The width of the slit gap 7 is the distance from the pressing surface 14 to the lower die 3.

Further, referring to fig. 2 and 3 again, a feeding channel 31 communicating with the fluid distribution chamber 33 is further provided in the lower mold 3. The feed channel 31 is located at the bottom of the fluid distribution chamber 33, the feed channel 31 includes a feed opening 32, and the feed opening 32 is located at the central axis of the lower die 3. The feed channel 31 is used for feeding the fluid distribution chamber 33, and the feed opening 32 is located at the central axis of the lower die 3, so that uneven feeding in different areas of the fluid distribution chamber 33 can be avoided.

Further, referring to fig. 3 and 5, an upper mold cover 11 is further disposed on the upper mold 1, at least two circuit boards 8 are disposed below the upper mold cover 11, a circuit board 8 is correspondingly disposed in each pressure sensor accommodating cavity 13, and the circuit boards 8 are electrically connected to the pressure sensors 131. Thus, the upper mold cover 11 protects at least two circuit boards 8, and the service life of the circuit boards 8 is prolonged.

In the coating die head provided by the above embodiment, the upper die 1 is provided with the adjusting groove 12 with an outward opening and at least two adjusting mechanisms 2 for adjusting the height of the adjusting groove 12, and the at least two adjusting mechanisms 2 are embedded in the adjusting groove 12. The at least two pressure sensors 131 detect the pressure in the fluid distribution cavity 33 in real time, when the at least two pressure sensors 131 detect that a pressure difference exists in different areas of the fluid distribution cavity 33, the pressure detected by the pressure sensors 131 in real time is compared with a known standard pressure value, and according to a comparison result, the opening heights in different areas of the adjusting groove 12 are adjusted through the at least two adjusting mechanisms 2, so that the adjustment of the widths of the slit gaps in different areas is realized. The adjusting mechanism 2 can adjust the opening of the adjusting groove 12 to be contracted, so that the width of the slit gap 7 is widened; the adjusting mechanism 2 can adjust the opening of the adjusting groove 12 to narrow the width of the slit gap 7. Specifically, when the first socket head cap screw 21 is screwed inward by the adjusting mechanism 2, the opening of the adjusting groove 12 is opened, and the width of the slit gap 7 is narrowed; when one of the adjusting mechanisms 2 unscrews the first socket head cap screw 21 outward, the opening of the adjusting groove 12 is contracted, and the width of the slit gap 7 is widened. In addition, in the gap coating process, slurry is always supplied in frequent opening and closing cycles, the pressure difference of different areas in the fluid distribution cavity 33 is more obvious, and the coating die head provided by the embodiment does not need to adjust the slit gap 7 through actual coating density, so that the waste caused by both the slurry and the coated base material is avoided, and the coating precision and efficiency are improved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A coating die head comprises an upper die (1) and a lower die (3), and is characterized in that:

at least two pressure sensor accommodating cavities (13) are formed in the upper die (1), and at least two pressure sensors (131) are arranged in the pressure sensor accommodating cavities (13);

the lower die (3) comprises a fluid distribution cavity (33), and the fluid distribution cavity (33) is communicated with the pressure sensor accommodating cavity (13);

a slit gap (7) is formed between the upper die (1) and the lower die (3).

2. The coating die head according to claim 1, characterized in that the upper die (1) is further provided with an adjusting groove (12) with an outward opening and at least two adjusting through holes (16), and at least two adjusting mechanisms (2) for adjusting the height of the adjusting groove (12) are arranged in the at least two adjusting through holes (16) in a penetrating manner.

3. The coating die according to claim 2, characterized in that each of said pressure sensors (131) corresponds to at least two of said adjustment mechanisms (2);

adjustment mechanism (2) include first socket head cap screw (21) and second socket head cap screw (22), first socket head cap screw (21) pass adjust through-hole (16), be equipped with a mounting hole (211) in first socket head cap screw (21), second socket head cap screw (22) pass through mounting hole (211) with first socket head cap screw (21) threaded connection.

4. The coating die according to claim 1, wherein the fluid distribution cavity (33) is a curved structure comprising a middle end (331) and lateral ends (332) on both sides of the middle end (331).

5. The coating die according to claim 4, characterized in that the cross section of the middle end (331) is a constant "U" shaped structure with constant diameter and area; the section of the side end (332) is of a decreasing U-shaped structure, and the diameter and the area of the decreasing U-shaped structure are gradually decreased.

6. The coating die according to claim 2, characterized in that a shim (6) is interposed between said upper die (1) and said lower die (3);

the gasket (6) comprises a fixing plate (61) and a first side plate (62) and a second side plate (63) which are arranged at two ends of the fixing plate (61).

7. The coating die head according to claim 6, wherein the upper die (1) is provided with at least two first through holes (15) penetrating along the thickness direction of the upper die (1), the gasket (6) is provided with at least two coaxial second through holes (64) corresponding to the first through holes (15), the lower die (3) is provided with at least two coaxial threaded holes (34) corresponding to the first through holes (15), and at least two screws (5) sequentially penetrate through the corresponding first through holes (15) and the second through holes (64) and are in threaded connection in the corresponding threaded holes (34).

8. The coating die according to claim 6, characterized in that the upper die (1) further comprises a pressing surface (14), the pressing surface (14) is attached to the shim (6), and when the opening height of the adjustment groove (12) is changed, the pressing surface (14) is plastically deformed to change the width of the slit gap (7).

9. The coating die according to claim 1, characterized in that a feed channel (31) communicating with the fluid distribution chamber (33) is further provided in the lower die (3);

the feeding channel (31) is positioned at the bottom of the fluid distribution cavity (33), the feeding channel (31) comprises a feeding hole (32), and the feeding hole (32) is positioned at the central axis position of the lower die (3).

10. The coating die according to claim 1, wherein a circuit board (8) is correspondingly arranged in each pressure sensor accommodating cavity (13), and the circuit board (8) is electrically connected with the pressure sensor (131).