CN210121540U

CN210121540U - Micro-gravure coating liquid tank

Info

Publication number: CN210121540U
Application number: CN201822198701.7U
Authority: CN
Inventors: 胡坚
Original assignee: Zhangjiagang Kangdexin Optronics Material Co Ltd
Current assignee: Zhangjiagang Kangdexin Optronics Material Co Ltd
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2020-03-03
Anticipated expiration: 2028-12-26

Abstract

The utility model provides a little gravure coating cistern is provided with the guide plate in the little gravure coating cistern, through improving the guide plate, makes the guide plate includes riser and diaphragm to increase circular arc chamfer, guaranteed that coating rubberizing liquid stream is steady and even, the coating surface satisfies outward appearance vertical line stable requirement, can not produce the bad problem of vertical retort in the coating process, need not often wash the cleanness in the production process, can stabilize production for a long time, has improved production efficiency, has reduced the coating cost.

Description

Micro-gravure coating liquid tank

Technical Field

The utility model relates to a coating technical field especially relates to a little gravure coating cistern.

Background

The coater may apply rolls of substrates such as: paper, cloth, leather, aluminum foil, plastic film, etc. are painted with glue, paint or ink, etc. and stoved and wound. The coating machine is mainly applied to gluing of shoe materials, electronic industry, EVA, PE, cloth, papermaking, printing, battery plates and the like. The coating process is mainly completed by five parts of unreeling, coating, drying, drawing and reeling, wherein the coating process is the most important.

The mainstream coating methods of optical films include micro-gravure coating and slit coating, the micro-gravure coating technology has been extensively described in the published documents, for example, chinese patent with application number CN201720314930.3 discloses a micro-gravure coating machine, as shown in fig. 1, the coating machine includes: cistern 1, set up at the slight concave roller 2 of cistern 1 top, locate two substrate conveying rollers 3 of slight concave roller 2 top both sides, with the position department that slight concave roller 2 corresponds the scraper 4 that sets up, corresponds with 5 both sides edges of substrate still be provided with block piece 6 and with the inlet means of cistern 1 intercommunication, inlet means includes: the glue tank comprises a glue tank 10, a pipeline 11 and a hydraulic pump 12, wherein two ends of the pipeline 11 are respectively communicated with the glue tank 10 and the liquid tank 1, and the hydraulic pump 12 is arranged on the pipeline 11. The micro-concave coating machine further comprises a discharging roller 7 and a receiving roller 8 which are respectively arranged on two sides, a baking device 9 is further arranged between the receiving roller 8 and the substrate conveying roller 3, the substrate 5 is conveyed to the micro-concave roller 2 through the substrate conveying roller 3 for gluing after being discharged from the discharging roller 7, and is conveyed to the baking device 9 through the substrate conveying roller 3 for drying after the gluing is finished, and the receiving roller 8 receives materials.

The micro gravure coating is mainly suitable for low-viscosity glue, the main problems in the coating process include poor vertical bars, the main influence factors include liquid flow stability, a liquid supply mode, scraper flatness and the like, and the micro gravure coating is usually adjusted by washing and cleaning in the production process but cannot be stably produced for a long time.

SUMMERY OF THE UTILITY MODEL

To above technical problem, the utility model provides a little gravure coating cistern has solved traditional little gravure coating and has produced the vertical line on coating surface easily bad, the unable problem of stabilizing production for a long time.

In order to achieve the above purpose, the technical solution of the present invention is as follows: the utility model provides a micro-gravure coating cistern, be provided with the guide plate in the cistern, the guide plate includes riser and diaphragm, riser and diaphragm are roughly mutually perpendicular, the lower extreme of riser and the one end of diaphragm passes through turning portion fixed connection, turning portion is circular arc chamfer. When the liquid flow of the coating material enters the trough, the liquid flow touches the vertical plate of the guide plate and is guided by the vertical plate, the corner parts and the transverse plate in sequence, so that the liquid flow slows down and uniformly flows to the bottom and two sides, and meanwhile, the liquid flow is prevented from directly impacting the gravure roller, and the stability and uniformity of the coating liquid flow are ensured; the corner part is an arc chamfer, the surface is smooth and uniform, and the stability and uniformity of the sizing liquid flow are further ensured. The liquid tank and the guide plate can be made of stainless steel, aluminum alloy or plastic and other conventional materials.

Preferably, the radius of the circular arc chamfer is R, and R is more than 0mm and less than or equal to 40 mm. More preferably, R is more than or equal to 20mm and less than or equal to 30 mm.

Preferably, the upper end of the vertical plate of the guide plate is provided with a fixing part, and the guide plate is fixed on the liquid tank through the fixing part.

Preferably, the liquid tank comprises a front side wall, a rear side wall, a left side wall, a right side wall and a bottom wall, the upper part of the liquid tank is provided with an opening, and the guide plate is fixed on the right side wall of the liquid tank by the fixing part.

Preferably, the vertical plate, the transverse plate and the corner part of the guide plate are all in contact with the front side wall and the rear side wall of the liquid tank, namely the length of the vertical plate, the transverse plate and the corner part of the guide plate is equal to the distance between the front side wall and the rear side wall of the liquid tank.

Preferably, a liquid inlet hole is formed in the right side wall of the liquid tank, the position of the liquid inlet hole corresponds to the position of the vertical plate of the guide plate, and the liquid inlet hole can be intersected with the vertical plate after being horizontally extended. The number of the liquid inlet holes can be more than two, and the more than two liquid inlet holes are preferably positioned on the same horizontal plane.

Preferably, the height of the liquid inlet hole is more than or equal to half of the height of the right side wall of the liquid tank.

Preferably, the distance from the vertical plate to the right side wall is A, the distance from the transverse plate to the bottom wall is B, the distance from the left end of the transverse plate to the left side wall is C, then A is more than or equal to 5mm and less than or equal to 15mm, B is more than or equal to 2mm and less than or equal to 6mm, and C is more than or equal to 10mm and less than or equal to 20 mm.

Preferably, the front side arm and the rear side wall are provided with grooves so as to conveniently install the micro-gravure coating roller.

Preferably, the liquid bath includes a coating bath and an overflow bath for receiving the coating liquid overflowing from the coating bath.

The utility model discloses a be provided with the guide plate in the micro-gravure coating cistern, through improving the guide plate, make the guide plate includes riser and diaphragm to increase circular arc chamfer, guaranteed that coating rubberizing liquid flow is steady and even, the coating surface satisfies outward appearance vertical line stable requirement, can not produce the bad problem of vertical retort among the coating process, need not often wash the cleanness in the production process, can stabilize production for a long time, improved production efficiency, reduced the coating cost.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention. In the drawings:

FIG. 1 shows a schematic structural view of a conventional micro-gravure coater;

FIG. 2 shows a schematic structural view of a micro-gravure coating bath according to an embodiment of the present invention;

FIG. 3 shows a top view of a micro-gravure coating bath according to an embodiment of the present invention;

FIG. 4 is a schematic view showing the structure of the front side wall of the micro-gravure coating liquid bath according to the embodiment of the present invention

FIG. 5 shows a schematic structural view of a micro-gravure coating bath of a comparative example of the present invention;

wherein, 1, a liquid tank; 2. a micro-concave roller; 3. a conveying roller; 4. a scraper; 5. a substrate; 6. a blocking member; 7. a discharge roller; 8. a material receiving roller; 9. a baking device; 10. a glue barrel; 11. a pipeline; 12 a hydraulic pump; 20. a micro gravure coating liquid tank; 21. a coating tank; 22. an overflow trough; 23. a left side wall; 24. a right side wall; 25. a front side wall; 26. a rear sidewall; 27. a bottom wall; 28. a baffle; 29. a coating roll; 30. a roll shaft; 31. a groove; 32. a vertical plate; 33. a transverse plate; 34. a corner portion; 35. a fixed part; 36. a liquid inlet hole; 40. and a micro gravure coating liquid tank A.

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, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element 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" as appearing herein 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" should be interpreted broadly, e.g., as being either 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 in specific cases to those skilled in the art.

Example 1

As shown in fig. 2-3, a micro-gravure coating liquid bath 20 comprises a coating bath 21 and an overflow bath 22, wherein the coating bath 21 comprises a left side wall 23, a right side wall 24, a front side wall 25, a rear side wall 26 and a bottom wall 27, the upper part of the coating bath 21 is open, a guide plate 28 and a coating roller 29 are arranged in the coating bath 21, roller shafts 30 at two ends of the coating roller 29 are respectively arranged in grooves 31 of the front side wall 25 and the rear side wall 26, the guide plate 28 comprises a vertical plate 32, a transverse plate 33, a corner part 34 and a fixing part 35, the vertical plate 32 and the transverse plate 33 are mutually vertical, the fixing part 35 is fixedly arranged at the upper end of the vertical plate 32, the fixing part 35 is fixed on the right side wall 24 by screws so as to fix the guide plate 28 on the liquid bath 20, the lower end of the vertical plate 32 and the right end of the transverse plate 33 are fixedly connected through the corner part, the circular arc radius R of circular arc chamfer is 20mm, the riser 32 of guide plate 28, diaphragm 33 and the length of turning portion 34 are the same and the length equals the distance between the front and back lateral wall, are provided with feed liquor hole 36 on the right side wall 25, and feed liquor hole 36 is located the three quarters of the height of right side wall 25, the riser 32 extremely the distance A of right side wall 25 is 10mm, diaphragm 33 extremely the distance B of diapire 27 is 4mm, diaphragm 33 left end extremely the distance C of left side wall 23 is 15 mm. The liquid tank 20 and the guide plate 28 are made of aluminum alloy.

Example 2

A micro-gravure coating liquid bath 20 was the same as in example 1 except that the radius R of the circular arc chamfer was 10 mm.

Example 3

A micro-gravure coating liquid bath 20 was the same as in example 1 except that the radius R of the circular arc chamfer was 30 mm.

Example 4

A micro-gravure coating liquid bath 20 was the same as in example 1 except that the radius R of the circular arc chamfer was 40 mm.

Example 5

A micro-gravure coating bath 20 was the same as in example 1 except that the distance A from the vertical plate to the right side wall was 5mm, the distance B from the transverse plate to the bottom wall was 2mm, and the distance C from the left end of the transverse plate to the left side wall was 10 mm.

Example 6

A coating solution tank 20 for a micro-gravure plate was the same as in example 1 except that the distance A from the vertical plate to the right side wall was 15mm, the distance B from the lateral plate to the bottom wall was 6mm, and the distance C from the left end of the lateral plate to the left side wall was 20 mm.

Example 7

A micro-gravure coating liquid bath 20 was the same as in example 5 except that the radius R of the circular arc chamfer was 30 mm.

Example 8

A micro-gravure coating liquid bath 20 was the same as in example 6 except that the radius R of the circular arc chamfer was 30 mm.

Example 9

A micro-gravure coating liquid bath 20 was the same as in example 5 except that the radius R of the circular arc chamfer was 10 mm.

Example 10

A micro-gravure coating liquid bath 20 was the same as in example 5 except that the radius R of the circular arc chamfer was 40 mm.

Example 11

A micro-gravure coating liquid bath 20 was the same as in example 6 except that the radius R of the circular arc chamfer was 10 mm.

Example 12

A micro-gravure coating liquid bath 20 was the same as in example 6 except that the radius R of the circular arc chamfer was 40 mm.

Comparative example 1

A micro-gravure coating bath A40 was the same as in example 1 except that the chamfer was an inclined plane, i.e., the radius R of the arc was infinite.

Comparative example 2

A micro-gravure coating liquid bath A40 was the same as in example 5 except that the chamfer was an inclined plane, i.e., the radius R of the circular arc was infinite.

Comparative example 3

A micro-gravure coating liquid bath A40 was the same as in example 6 except that the chamfer was an inclined plane, i.e., the radius R of the circular arc was infinite.

The micro-gravure coating liquid tanks of the above examples and comparative examples are used for carrying out micro-gravure coating on the PET substrate under the same conditions, and the coating products obtained by the examples 1, 3, 5-8 have no bad vertical bar problem, have excellent appearance and meet the stable requirement of vertical lines of the appearance; the coating products obtained by the embodiments 2, 4 and 9-12 have no bad vertical bar problem, have good appearance and meet the requirement of stable vertical line of the appearance; the coated products obtained by using comparative examples 1 to 3 exhibited poor vertical streaks and poor appearance, and did not satisfy the requirement for stabilization of the vertical streaks in appearance. As can be seen from the above, the effect is best under the conditions that A is more than or equal to 5mm and less than or equal to 15mm, B is more than or equal to 2mm and less than or equal to 6mm, C is more than or equal to 10mm and less than or equal to 20mm, and R is more than or equal to 20mm and less than or equal to 30mm, the appearance is excellent, and the production can be stably carried.

Claims

1. The utility model provides a micro-gravure coating cistern, its characterized in that, be provided with the guide plate in the cistern, the guide plate includes riser and diaphragm, riser and diaphragm mutually perpendicular, the lower extreme of riser with the one end of diaphragm passes through turning portion fixed connection, turning portion is circular arc chamfer.

2. The coating liquid tank as claimed in claim 1, wherein if the radius of the circular arc chamfer is R, then 0mm < R ≦ 40 mm.

3. The coating liquid tank as claimed in claim 1, wherein R is 20mm ≦ R ≦ 30mm assuming that R is a radius of the circular arc chamfer.

4. The coating liquid tank as claimed in claim 1, wherein the upper ends of the risers of the deflector are provided with fixing portions by which the deflector is fixed to the liquid tank.

5. The coating liquid bath according to any one of claims 1-4, wherein the liquid bath comprises a left side wall, a right side wall, a front side wall, a rear side wall, and a bottom wall, and the upper portion is open.

6. The coating liquid tank as claimed in claim 5, wherein if the distance from the vertical plate to the right side wall is A, the distance from the transverse plate to the bottom wall is B, and the distance from the left end of the transverse plate to the left side wall is C, then the distance is 5mm or more and less than A and less than 15mm, 2mm or less and less than B and less than 6mm, and 10mm or less and less than C and less than 20 mm.

7. The coating bath of claim 5 wherein the risers, cross plates and corners of the deflector have a length equal to the distance between the front and rear side walls of the bath.

8. The coating liquid tank according to claim 5, wherein a liquid inlet hole is provided on a right side wall of the liquid tank, and the position of the liquid inlet hole corresponds to the position of a riser of the deflector.

9. The coating solution tank of claim 8, wherein the number of the solution inlet holes is two or more.

10. The coating bath according to claim 8, wherein the height of the inlet aperture is equal to or greater than half the height of the right side wall of the bath.

11. The coating solution tank of claim 5 wherein the front and back side walls are provided with grooves.

12. The coating solution tank of claim 1, wherein the solution tank further comprises an overflow tank.