CN214872124U

CN214872124U - Casting nozzle for TPU film production casting machine

Info

Publication number: CN214872124U
Application number: CN202120729043.9U
Authority: CN
Inventors: 刘俊亮
Original assignee: Suzhou Kesimai New Material Technology Co ltd
Current assignee: Suzhou Kesimai New Material Technology Co ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-11-26
Anticipated expiration: 2031-04-12

Abstract

The utility model discloses a TPU membrane production curtain coating mouth for curtain coating machine belongs to curtain coating mouth technical field for the curtain coating machine. The casting nozzle comprises a feeding pipe, a guide plate and a casting box, wherein the feeding pipe is connected with a slurry hopper and used for conveying slurry; and the exit that corresponds the guide plate on the curtain coating box is equipped with the overflow launder that is the ladder distribution more than two, thick liquids flow downwards along the clearance between two homogenization baffles in the guide plate and pass through the electrothermal sheet heating after, improve the mobility of thick liquids, make thick liquids shakeout more easily, set up the curtain coating box of taking multistage overflow launder in the below of guide plate, can be with the even base band of spreading of thick liquids on, the bubble in the thick liquids can also be discharged simultaneously, guarantee on next step that shakeout more smoothly by the scraper, make the film homogeneity, improve the quality after the film shaping.

Description

Casting nozzle for TPU film production casting machine

Technical Field

The utility model relates to a casting machine spare part especially relates to a TPU membrane production casting machine curtain coating mouth, belongs to curtain coating mouth technical field for the casting machine.

Background

A casting machine is a special device for manufacturing a casting film. In the TPU film casting production, TPU film production raw materials are mixed to prepare slurry with certain viscosity, the slurry flows down from a hopper, is scraped and coated on a special base band by a scraper with certain thickness, and is peeled off from the base band after being dried and solidified to form a film. At present, the slurry in a slurry hopper needs to be conveyed to the upper part of a base belt by a pipeline, but when the distance of pipeline conveying is long, the slurry is easy to be viscous at an outlet end, so that the ductility of the slurry is poor; meanwhile, the slurry is directly conveyed to the base belt through a pipeline, so that the position of the slurry on the base belt is concentrated or contains air bubbles, and the film forming effect is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a TPU membrane production curtain coating mouth for curtain coating machine to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a casting nozzle for a TPU film production casting machine, comprising:

the feeding pipe is positioned and connected to the slurry hopper of the casting machine and communicated with the slurry hopper to convey slurry;

the guide plate is positioned and connected to the output end of the feeding pipe in a sealing manner, and the interior of the guide plate is communicated with the interior of the feeding pipe; and

the casting box is arranged below the guide plate and is positioned in front of the base band; at least two overflow chutes which are distributed in a ladder shape are sequentially arranged in the tape casting box along the length direction of the base tape, wherein the overflow chute at the highest position is over against the lower part of the outlet of the guide plate, a tape casting inclined plate fixedly connected to the tape casting box is formed on one side of the discharge end of the overflow chute at the lowest position, and the tail end of the tape casting inclined plate is abutted against the conveying front end of the base tape.

The further technical scheme is as follows:

and a first overflow groove and a second overflow groove which are distributed in a high-low manner are sequentially arranged in the tape casting box along the length direction of the base tape, a partition plate is arranged between the first overflow groove and the second overflow groove, and two ends and the bottom of the partition plate are fixedly connected with the tape casting box.

The further technical scheme is as follows:

the bottom of the first overflow groove is higher than the bottom of the second overflow groove, and the top of the partition plate is an arc surface which is smoothly transited from the inside of the first overflow groove to the inside of the second overflow groove.

The further technical scheme is as follows:

the included angle between the casting inclined plate and the horizontal plane at the bottom of the casting box is 30-45 degrees; and the top of the casting sloping plate is an arc surface which smoothly transits from the inside of the overflow groove to the surface of the casting sloping plate.

The further technical scheme is as follows:

the top of the guide plate is fixedly provided with a connecting cap which is used for being connected with the output end of the feeding pipe, and the connecting cap is hermetically connected with the output end of the feeding pipe and is communicated with the inside of the feeding pipe.

The further technical scheme is as follows:

the inside of guide plate has the unloading passageway that link up from top to bottom, all sets firmly one along the equal material baffle of guide plate horizontal setting on the relative two inside walls of guide plate in this unloading passageway, these two equal material baffles symmetric distribution just are close to the discharge end of conveying pipe.

The further technical scheme is as follows:

a gap for slurry to flow is formed between the tail ends of the two homogenizing baffles, and the two homogenizing baffles incline 45 degrees towards the direction of the slurry outlet.

The further technical scheme is as follows:

an electric heating piece electrically connected with an external power supply is fixedly arranged at the position right below a gap formed by the two material homogenizing baffles in the guide plate, and a channel for slurry to flow out is formed between the two working surfaces of the electric heating piece and the inner side surface of the guide plate.

The further technical scheme is as follows:

the discharge end of the guide plate is of a V-shaped structure with an opening at the bottom.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the outlet end through at the conveying pipe sets up the guide plate, and the inside of guide plate has the homogenization baffle with thick liquids along the direction of baseband width direction, makes the thick liquids can follow the length direction evenly distributed whereabouts of guide plate, and the thick liquids flows downwards along the clearance between two homogenization baffles and after the electrothermal sheet heating, improves the mobility of thick liquids, makes thick liquids shakeout more easily.

2. Set up the curtain coating box of taking multistage overflow launder in the below of guide plate, the overflow launder distributes according to the echelonment from high to low in proper order, after upper overflow launder is stockpiled up fully, thick liquids can gush into in the overflow launder of low direction in proper order, at this in-process, can be with the bubble discharge in the thick liquids, can be with the even baseband of spreading out of thick liquids on, the bubble in the thick liquids of can also discharging simultaneously, guarantee to be flattened more smoothly by the scraper on next step, make the film homogeneity, improve the quality after the film shaping.

Drawings

The accompanying drawings 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 and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of a deflector of the present invention;

FIG. 3 is a schematic perspective view of a casting box according to the present invention;

FIG. 4 is a schematic structural view of a deflector of the present invention;

in the figure:

1. a feed pipe;

2. a baffle; 201. a blanking channel; 21. a connecting cap; 22. a material homogenizing baffle; 23. an electric heating sheet;

3. a casting box; 301. a first overflow tank; 302. a second overflow tank; 31. a partition plate; 32. casting inclined plates.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

With reference to fig. 1 to 4, the embodiment describes a casting nozzle for a TPU film production casting machine in detail, and the casting nozzle mainly comprises a feeding pipe 1, a baffle 2 and a casting box 3.

The feeding pipe 1 is positioned and connected on the slurry hopper of the casting machine and communicated with the slurry hopper to feed slurry.

The guide plate 2 is positioned and connected with the output end of the feeding pipe 1 in a sealing manner, and the inside of the guide plate is communicated with the inside of the feeding pipe 1. Specifically, the top of the guide plate 2 is fixedly provided with a connecting cap 21 used for being connected with the output end of the feeding pipe 1, the connecting cap 21 is hermetically connected with the output end of the feeding pipe 1 and is internally communicated, the connecting cap 21 is installed at the discharge port of the feeding pipe 1 in a screw connection or clamping connection mode, and a sealing ring is installed between the connecting cap 21 and the feeding pipe 1 to ensure the sealing property; the discharge end of the guide plate 2 is of a V-shaped structure with an opening at the bottom. The inside of guide plate 2 has the unloading passageway 201 that link up from top to bottom, all sets firmly one along the horizontal homocline baffle 22 that sets up of guide plate on the two relative inside walls of guide plate 2 in this unloading passageway, these two homocline baffles 22 symmetric distribution just are close to the discharge end of conveying pipe 1. A gap for slurry to flow is formed between the tail ends of the two homogenizing baffles 22, and the two homogenizing baffles 22 incline 45 degrees towards the slurry outlet direction. An electric heating piece 23 electrically connected with an external power supply is fixedly arranged at the position right below a gap formed by the two material homogenizing baffles in the guide plate 2, the specific electric heating piece is fixedly connected to the left side surface and the right side surface of the inner part of the guide plate through the left side surface and the right side surface of the electric heating piece, and a channel for slurry to flow out is formed between the two working surfaces of the electric heating piece and the inner side surface of the guide plate. Through setting up two homogenization baffles 22 in inside, after the thick liquids that follow conveying pipe 1 and derive entered into guide plate 2, can pass through homogenization baffle 22, homogenization baffle 22 is with thick liquids to both sides guide to make thick liquids can follow the length direction evenly distributed whereabouts of guide plate 2, thick liquids along the clearance between two homogenization baffles 22 after 23 heats of electric heat piece of downward flow process, improve the mobility of thick liquids, make thick liquids shakeout more easily.

The casting box 3 is arranged below the guide plate 2 and is positioned in front of the base band and is mainly used for delaying the speed of the slurry reaching the base band. At least two overflow chutes which are in a ladder shape and are distributed in sequence from high to low are sequentially arranged in the tape casting box along the length direction of the base tape, wherein the overflow chute at the highest position is just opposite to the position below the outlet of the guide plate, a tape casting inclined plate 32 which is fixedly connected to the tape casting box 3 is formed on one side of the discharge end of the overflow chute at the lowest position, and the tail end of the tape casting inclined plate is abutted to the conveying front end of the base tape. The slurry in the guide plate 2 flows to the overflow groove right below for accumulation, and after the overflow groove is filled with the slurry, the slurry in the overflow groove can sequentially gush into the overflow groove in the lower direction. In this in-process, can discharge the bubble in the thick liquids, when the thick liquids in the overflow launder of last one-step were deposited and are overflowed, then can follow the baseband of curtain coating swash plate 32 flow direction below on, can be with the even baseband of spreading out of thick liquids, the bubble in the thick liquids that can also discharge simultaneously guarantees to be flattened more smoothly by the scraper on next step, makes the film homogeneity, improves the quality after the film shaping.

Specifically, a first overflow groove 301 and a second overflow groove 302 which are distributed in a high-low manner are sequentially arranged in the casting box 3 along the length direction of the base tape, wherein a partition plate 31 is arranged between the first overflow groove 301 and the second overflow groove 302, and both ends and the bottom of the partition plate 31 are fixedly connected with the casting box 3. The bottom of the first overflow groove 301 is higher than the bottom of the second overflow groove 302, and the top of the partition 31 is an arc surface smoothly transitioning from the inside of the first overflow groove to the inside of the second overflow groove. The included angle between the casting inclined plate 32 and the horizontal plane at the bottom of the casting box 3 is 30-45 degrees, and the setting of the angle can reduce the initial speed of slurry flowing from the casting inclined plate 32 to the base band, so that the slurry is flattened by a scraper. And the top of the casting sloping plate is an arc surface which smoothly transits from the inside of the overflow groove to the surface of the casting sloping plate. Through set up the first overflow launder 301 and the second overflow launder 302 of two-stage ladder-shaped distribution in casting box 3, wherein first overflow launder 301 mainly plays the effect of receiving thick liquids, the thick liquids in first overflow launder 301 is at the in-process that flows down to second overflow launder 302, because thick liquids are thinner when the baffle 31, can be with the bubble discharge in the thick liquids, and slowly flow into in the second overflow launder 302, thereby the thick liquids texture that enters into in the second overflow launder 302 is more even, and the bubble is few, after thick liquids in the second overflow launder 302 is full of, flow to the baseband along with casting swash plate 32, then the thick liquids texture is more even, can improve the quality of post-forming membrane.

In this embodiment, one end of the feeding pipe 1 is connected with the slurry hopper, and under the action of the negative pressure pump, slurry in the hopper is conveyed into the guide plate 2 from the feeding pipe 1, wherein the connection structure of the feeding pipe and the negative pressure pump is the same as that of the slurry conveying mechanism applied to the field in the prior art. Guide plate 2 adopts stainless steel or alloy material, the thick liquids of deriving from conveying pipe 1 can be through homogenization baffle 22 after entering into guide plate 2, homogenization baffle 22 is with thick liquids to both sides guide to make thick liquids can follow the length direction evenly distributed whereabouts of guide plate 2, thick liquids along two homogenization baffles clearance between 22 after 23 heats of electric heat piece that flow downwards, improve the mobility of thick liquids, make thick liquids shakeout more easily. And then the slurry is heated to reach better fluidity and then is guided into a casting box 3 below, the casting box 3 is made of stainless steel or alloy materials, a first overflow groove 301 and a second overflow groove 302 which are distributed in a two-stage ladder shape are arranged on the casting box 3, wherein the first overflow groove 301 mainly plays a role in receiving slurry, bubbles in the slurry can be discharged and slowly flow into the second overflow groove 302 in the process that the slurry in the first overflow groove 301 flows towards the lower part of the second overflow groove 302 because the slurry is thinner after passing through a partition plate 31, so that the slurry entering the second overflow groove 302 has more uniform texture and is less in bubbles, and after the slurry in the second overflow groove 302 is fully stored, the slurry flows onto a base band along a casting inclined plate 32, so that the slurry has more uniform texture and the quality of a formed film can be improved.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", 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 in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A TPU membrane production casting machine curtain coating mouth which characterized in that includes:

the feeding pipe (1) is positioned and connected to the slurry hopper of the casting machine and is communicated with the slurry hopper to convey slurry;

the guide plate (2) is positioned and connected to the output end of the feeding pipe (1) in a sealing manner, and the interior of the guide plate is communicated with the interior of the feeding pipe (1); and

the casting box (3) is arranged below the guide plate (2) and is positioned in front of the base band; at least two overflow chutes which are distributed in a ladder shape are sequentially arranged in the casting box along the length direction of the base band, wherein the overflow chute at the highest position is over against the lower part of the outlet of the guide plate, a casting inclined plate (32) fixedly connected to the casting box (3) is formed at one side of the discharge end of the overflow chute at the lowest position, and the tail end of the casting inclined plate is abutted against the conveying front end of the base band.

2. The casting nozzle for the TPU film production casting machine according to claim 1, characterized in that: the casting box (3) is internally provided with a first overflow groove (301) and a second overflow groove (302) which are distributed in a high-low mode in sequence along the length direction of a base band, wherein a partition plate (31) is arranged between the first overflow groove (301) and the second overflow groove (302), and two ends and the bottom of the partition plate (31) are fixedly connected with the casting box (3).

3. The casting nozzle for the TPU film production casting machine according to claim 2, characterized in that: the bottom of the first overflow groove (301) is higher than the bottom of the second overflow groove (302), and the top of the clapboard (31) is an arc surface which is smoothly transited from the inside of the first overflow groove to the inside of the second overflow groove.

4. The casting nozzle for the TPU film production casting machine according to claim 1, characterized in that: the included angle between the casting inclined plate (32) and the horizontal plane at the bottom of the casting box (3) is 30-45 degrees; and the top of the casting sloping plate is an arc surface which smoothly transits from the inside of the overflow groove to the surface of the casting sloping plate.

5. The casting nozzle for the TPU film production casting machine according to claim 1, characterized in that: the top of the guide plate (2) is fixedly provided with a connecting cap (21) which is used for being connected with the output end of the feeding pipe (1), and the connecting cap (21) is connected with the output end of the feeding pipe (1) in a sealing manner and is communicated with the inside.

6. The casting nozzle for the TPU film production casting machine according to claim 1, characterized in that: the inside of guide plate (2) has unloading passageway (201) that link up from top to bottom, all sets firmly one along the horizontal homocline baffle (22) that sets up of guide plate on the two relative inside walls of guide plate (2) in this unloading passageway, these two homocline baffles (22) symmetric distribution just are close to the discharge end of conveying pipe (1).

7. The casting nozzle for the TPU film production casting machine according to claim 6, characterized in that: a gap for slurry to flow is formed between the tail ends of the two homogenizing baffles (22), and the two homogenizing baffles (22) incline 45 degrees towards the direction of a slurry outlet.

8. The casting nozzle for the TPU film production casting machine according to claim 7, characterized in that: an electric heating piece (23) electrically connected with an external power supply is fixedly arranged at the position right below a gap formed by the two material homogenizing baffles in the guide plate (2), and a channel for slurry to flow out is formed between the two working surfaces of the electric heating piece and the inner side surface of the guide plate.

9. The casting nozzle for the TPU film production casting machine according to claim 1, characterized in that: the discharge end of the guide plate (2) is of a V-shaped structure with an opening at the bottom.