CN215141608U

CN215141608U - Coating die head capable of reducing deformation degree of die head lip

Info

Publication number: CN215141608U
Application number: CN202121213049.7U
Authority: CN
Inventors: 许玉山; 彭建林
Original assignee: Shenzhen Manst Technology Co Ltd
Current assignee: Shenzhen Manst Technology Co Ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2021-12-14
Anticipated expiration: 2031-06-01

Abstract

The utility model relates to a technical field of coating die head, concretely relates to reduce coating die head of die head lip deformation degree, including last mould, lower mould and slit gasket, go up and be formed with the coating slit through the slit gasket between mould and the lower mould, coating slit department be equipped with connect go up the mould with the retaining member of lower mould is equipped with on the lower mould and reduces the retaining member to the damped compensation groove of thick liquids, and the retaining member passes the compensation groove. The locking piece is additionally arranged at the front end of the die head, so that the opening problem caused by large cavity pressure at the front end of the die head is effectively reduced, the pressure resistance value of the coating die head is higher, and the coating die head is not easy to deform in the coating process. Meanwhile, the locking piece penetrates through the coating slit, so that certain influence is caused on coating, and in general, the flow of the die head at the corresponding position of the discharge port is reduced due to resistance at the position where the locking piece is installed, so that the local thickness of the coating is reduced. The damping problem caused by the locking piece can be reduced or counteracted by arranging the compensation groove around the locking piece.

Description

Coating die head capable of reducing deformation degree of die head lip

Technical Field

The utility model relates to a technical field of coating die head, concretely relates to reduce coating die head of die head lip deformation degree.

Background

The existing slit coating die head is composed of an upper die, a lower die and a gasket arranged between the upper die and the lower die, wherein the gasket can form a slit channel with a discharge hole on one side between the upper die and the lower die, a feeding channel is arranged on one side of the coating die head, a shunting cavity is arranged in the coating die head, slurry is fed into the shunting cavity from the feeding channel on one side, and then the slurry is extruded from the slit channel to perform coating operation.

In the field of coating technology, high speed and high solids coating is currently receiving increasing attention in order to save costs and improve coating efficiency. However, at high speed and high solids coating, the cavity pressure inside the die is generally high; the large cavity pressure will affect the overall structure of the die head, easily causing the die head lip to deform, and the deformed die head lip affects the coating quality.

Referring to fig. 1 and 2, fig. 1 is a schematic view of a theoretical die lip structure, and fig. 2 is a schematic view of an actual die lip structure. It is generally theorized that the gasket gap between the upper and lower die lip is determined by the thickness of the gasket and the distance between the upper and lower die lip is equal laterally everywhere, as shown in fig. 1. However, in general die, when the internal pressure of the cavity is too high, the opening at the discharge port of the die expands, and the larger the cavity pressure is, the larger the opening at the front end of the outlet is, so that the lateral distribution of the distance between the lips of the upper and lower dies is a structure with a large middle and two small sides, as shown in fig. 2. The large opening causes the coating to have a thick middle and thin sides.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a reduce coating die head of die head lip deformation degree increases locking bolt and changes overall structure intensity on the basis of current coating die head, makes the withstand voltage value of coating die head higher.

In order to realize the above object, the utility model provides a technical scheme provides a reduce coating die head of die head lip deformation degree, including last mould, lower mould and slit gasket, go up the mould with pass through between the lower mould the slit gasket is formed with the coating slit, coating slit department is equipped with the connection go up the mould with the retaining member of lower mould, be equipped with on the lower mould and reduce the retaining member to the damped compensation groove of thick liquids, the retaining member passes the compensation groove.

Furthermore, the compensation groove is internally provided with an adjusting cushion block, the adjusting cushion block and the side wall of the compensation groove leave a space, and the locking piece penetrates through the adjusting cushion block.

Furthermore, the locking piece adopts a locking bolt, the adjusting cushion block is a cylinder with a through hole, and the locking bolt penetrates through the through hole.

Further, the top of adjusting the cushion is equipped with the cooperation gasket, the cooperation gasket cover is established on the retaining member, the cooperation gasket with the lateral wall in compensation groove leaves the space, the top of cooperation gasket with the top of slit gasket is located same horizontal plane.

Furthermore, the surface, provided with the coating slit, of the lower die is a flow channel surface, a mounting hole is formed in the flow channel surface and is a stepped hole, the radius of the top end of the mounting hole is larger than that of the bottom end of the mounting hole, and the compensating groove is formed by the mounting hole close to the top end of the mounting hole.

Furthermore, the flow channel surface is provided with a plurality of mounting holes along the length direction, and the locking pieces and the mounting holes are the same in number and are respectively mounted in the corresponding mounting holes.

Furthermore, the upper die is provided with a plurality of connecting through holes corresponding to the positions of the mounting holes along the length direction, and the locking pieces are inserted into the corresponding connecting through holes and the mounting holes.

Furthermore, a feeding channel and a shunting cavity which are communicated are arranged on the lower die, the coating slit is communicated with the shunting cavity, and the feeding channel is communicated with the lowest end of the shunting cavity.

Further, the coating slit is disposed opposite to the feed passage.

Further, the embodiment of the utility model provides a still provide a reduce coating die head of die head lip deformation degree, including last mould, lower mould and slit gasket, go up the mould with pass through between the lower mould the slit gasket is formed with the coating slit, coating slit department is equipped with the connection go up the mould with the retaining member of lower mould, set up the logical groove that supplies the thick liquids circulation on the retaining member.

The beneficial effects of the utility model reside in that:

1. the existing die heads are all coated by discharging at the front end and fed at the rear end, and locking pieces with the die closing function are arranged on the other end surfaces except the front end of the die head. The invention is mainly characterized in that locking pieces are additionally arranged at four ends of the die head, particularly at the front end of the discharge of the coating slit. The locking piece is additionally arranged at the front end of the die head, so that the opening problem of the front end of the die head due to large cavity pressure is effectively reduced, the pressure resistance value of the coating die head is higher, and the coating die head is not easy to deform in the coating process. Meanwhile, the locking piece penetrates through the coating slit, so that certain influence is caused on coating, and in general, the flow of the die head at the corresponding position of the discharge port is reduced due to resistance at the position where the locking piece is installed, so that the local thickness of the coating is reduced. The damping problem caused by the locking piece can be reduced or counteracted by arranging the compensation groove around the locking piece.

2. Be equipped with the regulation cushion in the compensating tank, adjust the cushion and leave the space with the compensating tank lateral wall, the retaining member wears to establish the regulation cushion. The adjusting cushion block is a cylinder with a through hole, the inner through hole is a through hole of the locking piece, the depth of the general compensation groove is certain, and the wider the general compensation groove, the larger the compensation capacity. The width of the compensation groove can be adjusted by replacing the adjusting cushion blocks with different sizes, so that the strength of the compensation capacity can be adjusted.

3. The top of adjusting the cushion is equipped with the cooperation gasket, and the cooperation gasket cover is established on the retaining member, and the cooperation gasket leaves the space with the lateral wall in compensation groove, and the top of cooperation gasket and the top of slit gasket are located same horizontal plane. The cooperation gasket is general ring type gasket, and its thickness is that the cooperation coats the gasket and use, and it mainly plays the effect of supporting in coating slit, leads to locking deformation when avoiding the die head to be locked the piece installation.

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 schematic diagram of a theoretical die lip configuration of the prior art;

FIG. 2 is a schematic view showing a structure of a practical die lip in the background art;

fig. 3 is a schematic diagram of an exploded structure of a coating die head for reducing the deformation degree of a die lip according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a coating die for reducing the degree of deformation of a die lip according to an embodiment of the present invention.

Description of reference numerals:

1. an upper die; 11. a connecting through hole; 2. a lower die; 21. a compensation groove; 22. a runner surface; 23. mounting holes; 24. a feed channel; 25. a flow dividing cavity; 3. a slit gasket; 31. a fixing plate; 32. a first side plate; 33. a second side plate; 34. a connecting member; 4. coating a slit; 5. a locking member; 6. adjusting the cushion block; 7. a gasket is engaged.

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 in specific cases to 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.

Referring to fig. 1-4, as the embodiment of the present invention provides a coating die head for reducing die head lip deformation degree, including last mould 1, lower mould 2 and slit gasket 3, go up and be formed with coating slit 4 through slit gasket 3 between mould 1 and the lower mould 2, coating slit 4 department is equipped with the retaining member 5 of connecting last mould 1 and lower mould 2, is equipped with on the lower mould 2 and reduces retaining member 5 to the damped compensating groove 21 of thick liquids, and retaining member 5 passes compensating groove 21. The existing die heads are all coated by discharging at the front end and fed at the rear end, and locking pieces 5 with the die closing function are arranged on the other end surfaces except the front end of the die head. The invention is mainly characterized in that locking pieces 5 are additionally arranged at four ends of the die head, particularly at the front end of the discharge of the coating slit 4. The locking piece 5 is additionally arranged at the front end of the die head, so that the opening problem of the front end of the die head caused by large cavity pressure is effectively reduced, the pressure resistance value of the coating die head is higher, and the coating die head is not easy to deform in the coating process. Meanwhile, since the locking member 5 passes through the coating slit 4, a certain influence is exerted on the coating, and in general, the flow of the die head at the corresponding position of the discharge port is reduced due to the resistance at the position where the locking member 5 is installed, so that the local thickness of the coating is reduced. By providing compensating grooves 21 around retaining member 5, the damping problems caused by retaining member 5 can be reduced or counteracted.

Specifically, the slit gasket 3 includes a fixing plate 31 and a first side plate 32 and a second side plate 33 respectively disposed at two ends of the fixing plate 31, and the coating slit 4 is formed by the lower die 2 near the lip edge and the upper die 1 near the lip edge and the gap between the first side plate 32 and the second side plate 33. The coating slot 4 is disposed opposite to the feed channel 24, facilitating rapid coating. The lower die 2 is provided with a feeding channel 24 and a shunting cavity 25 which are communicated, and the coating slit 4 is communicated with the shunting cavity 25. Feed channel 24 sets up the central part in lower mould 2 one side, and reposition of redundant personnel cavity 25 sets up on the top of lower mould 2 and sets up along length direction, can flow respectively to reposition of redundant personnel cavity 25's both ends after feed channel 24 feeds, and then is favorable to the even ejection of compact of coating slit 4. The surface of the lower die 2 provided with the coating slit 4 is a flow passage surface 22, the flow passage surface 22 is provided with a mounting hole 23, the mounting hole 23 is a stepped hole, the top end radius of the mounting hole 23 is larger than the bottom end radius, the mounting hole 23 is close to the top end to form a compensation groove 21, the locking member 5 penetrates through the compensation groove 21 when being mounted, and a space is reserved between the compensation groove 21 and the compensation groove 21, namely the locking member 5 is annularly arranged on the compensation groove 21 for a circle. When the slurry flows through the locking member 5, the slurry moves down into the compensating groove 21 due to the existence of the compensating groove 21 and then overflows from the compensating groove 21 side close to the coating slit 4, and the damping effect of the locking member 5 on the slurry is reduced by the arrangement of the compensating groove 21. The flow passage surface 22 is provided with a plurality of mounting holes 23 along the length direction, and the locking pieces 5 and the mounting holes 23 are the same in number and are respectively mounted in the corresponding mounting holes 23. The upper die 1 is provided with a plurality of connecting through holes 11 corresponding to the mounting holes 23 along the length direction, and the locking piece 5 is inserted into the corresponding connecting through holes 11 and the mounting holes 23. Locking piece 5 adopts locking bolt in this embodiment, and locking bolt one end is located connect the via hole 11, and the other end is located mounting hole 23 for go up mould 1 and lower mould 2 and carry out fastening connection. In order to reduce the influence of the locking bolts of the upper and lower dies 2 at the front end discharging position as much as possible, the number of the locking bolts arranged at the front end is not too large, and a sealing device is required to be arranged at the joint of the locking bolts.

As a variant, the locking element 5 can also be a connecting element such as a connecting rod, screw or lead screw. Or a through groove for the slurry to flow through can be arranged on the locking piece 5. The damping effect of the locking piece 5 on the slurry can be reduced by arranging the through grooves.

Furthermore, the compensation groove 21 is internally provided with an adjusting cushion block 6, the adjusting cushion block 6 and the side wall of the compensation groove 21 leave a space, and the locking member 5 penetrates through the adjusting cushion block 6.

Specifically, the adjusting cushion block 6 is a cylinder with a through hole, the inner through hole is a through hole of the locking member 5, the depth of the general compensation groove 21 is constant, and the wider the compensation groove 21 is, the larger the compensation capacity is. The width of the compensation groove 21 can be adjusted by replacing the adjusting cushion blocks 6 with different sizes, so that the strength of the compensation capability can be adjusted. The top of adjusting cushion 6 is equipped with cooperation gasket 7, and cooperation gasket 7 cover is established on retaining member 5, and the space is left with the lateral wall in compensation groove 21 to cooperation gasket 7, and the top of cooperation gasket 7 and the top of slit gasket 3 are located same horizontal plane. The matching gasket 7 is a general circular ring type gasket, the thickness of the matching gasket is matched with the coating gasket for use, the matching gasket mainly plays a role in supporting in the coating slit 4, and locking deformation caused when the die head is installed by the locking piece 5 is avoided. The interaction of the locking element 5 with the compensating groove 21 can be optimally adjusted by means of CFD analysis software and then the correspondingly sized adjusting spacers 6 required for the function can be designed.

Further, the feeding channel 24 is communicated with the lowest end of the shunting cavity 25, and gradually feeds from the bottom end of the shunting cavity 25, so that air in the shunting cavity 25 is discharged, and the coating quality is prevented from being influenced by bubbles generated in the coating process.

Further, both sides of the slit gasket 3 are provided with connecting pieces 34 extending out of the lower die 2, and the slit gasket 3 can be conveniently taken down for replacement by clamping or grabbing the connecting pieces 34.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a reduce coating die head of die head lip deformation degree, includes mould (1), lower mould (2) and slit gasket (3), go up mould (1) with pass through between lower mould (2) slit gasket (3) are formed with coating slit (4), its characterized in that, coating slit (4) department is equipped with the connection go up mould (1) with retaining member (5) of lower mould (2), be equipped with on lower mould (2) and reduce retaining member (5) compensation groove (21) to thick liquids damping, retaining member (5) pass compensation groove (21).

2. The coating die head for reducing the deformation degree of the die head lip according to claim 1, wherein an adjusting cushion block (6) is arranged in the compensating groove (21), a space is reserved between the adjusting cushion block (6) and the side wall of the compensating groove (21), and the locking member (5) penetrates through the adjusting cushion block (6).

3. The coating die head capable of reducing the deformation degree of the die head lip as claimed in claim 2, wherein the locking member (5) is a locking bolt, and the adjusting cushion block (6) is a cylinder with a through hole, and the locking bolt penetrates through the through hole.

4. The coating die head capable of reducing the deformation degree of the die head lip as claimed in claim 2, wherein a matching gasket (7) is arranged at the top end of the adjusting cushion block (6), the matching gasket (7) is sleeved on the locking member (5), a space is reserved between the matching gasket (7) and the side wall of the compensation groove (21), and the top end of the matching gasket (7) and the top end of the slit gasket (3) are located on the same horizontal plane.

5. The coating die head for reducing the deformation degree of the die head lip as claimed in claim 1, wherein the side of the lower die (2) provided with the coating slit (4) is a runner surface (22), the runner surface (22) is provided with a mounting hole (23), the mounting hole (23) is a stepped hole, the radius of the top end of the mounting hole (23) is larger than that of the bottom end, and the mounting hole (23) forms the compensation groove (21) near the top end.

6. The coating die head for reducing the deformation degree of the die head lip as claimed in claim 5, wherein the flow channel surface (22) is provided with a plurality of mounting holes (23) along the length direction, and the locking members (5) and the mounting holes (23) are the same in number and are respectively mounted in the corresponding mounting holes (23).

7. The coating die head for reducing the deformation degree of the die head lip as claimed in claim 6, wherein the upper die (1) is provided with a plurality of connecting through holes (11) corresponding to the positions of the mounting holes (23) along the length direction, and the locking member (5) is inserted into the corresponding connecting through holes (11) and the corresponding mounting holes (23).

8. The coating die head for reducing the deformation degree of the die head lip as claimed in claim 7, wherein the lower die (2) is provided with a feeding channel (24) and a shunting cavity (25) which are communicated, the coating slit (4) is communicated with the shunting cavity (25), and the feeding channel (24) is communicated with the lowest end of the shunting cavity (25).

9. The coating die for reducing the degree of deformation of a die lip according to claim 8, wherein said coating slot (4) is disposed opposite to said feed channel (24).

10. The utility model provides a reduce coating die head of die head lip deformation degree, includes mould (1), lower mould (2) and slit gasket (3), go up mould (1) with pass through between lower mould (2) slit gasket (3) are formed with coating slit (4), its characterized in that, coating slit (4) department is equipped with the connection go up mould (1) with retaining member (5) of lower mould (2), set up the logical groove that supplies the thick liquids circulation on retaining member (5).