CN214521860U - Film casting sheet chilling device - Google Patents

Abstract

The utility model discloses a film casting piece chilling device, including the chill roll, the oblique top of chill roll is provided with the die head, inside axial region inlet tube, a plurality of inlet tube, outlet pipe and the axial region outlet pipe of being provided with of chill roll, the one end of axial region inlet tube and a plurality of inlet tube is linked together, be provided with first circulation portion on the inner wall of chill roll. The utility model discloses it is rational in infrastructure, through setting up first circulation portion on the inner wall at the chill roll, with the cooling water at first circulation portion inner loop flow, thereby realize carrying out abundant cooling to the internal surface of film casting piece, set up second circulation portion on the inner wall of chilling groove, make the cooling water that the circulation entered into in the chilling groove get into in a plurality of spraying ports from second circulation portion, spray the cooling through a plurality of spraying ports to the surface of film casting piece, thereby accomplish the cooling in the time of film casting piece internal and external surface, the cooling effect is good, and can not have the difference in temperature so that reduce film casting piece quality, the waste of reduction water resource that can also be fine.

Description

Film casting sheet chilling device

Technical Field

The utility model relates to a BOPP membrane production facility field specifically is a film casting piece chilling device.

Background

The cast sheet is a process that molten plastic passes through a long die under the pushing of pressure, and the molten plastic is attached to the surface of a cold drum under the ideal action to form a solid material. The chilling device is an important device for forming the cast sheet by the molten plastic, the chilling roller can rapidly cool the molten plastic flowing out of the long-mouth die head to be below the glass transition temperature of the molten plastic, the molten plastic is further cooled by cooling liquid in the chilling tank, and the stretchable crystal cast sheet is formed after the molten plastic is separated from the chilling roller at the moment.

The chilling device in the prior art is cooled by cooling water cast sheets, and in the cooling process, the outer side of the chilling roller can be fully cooled, but the cooling effect of the inner side of the chilling roller is poor, so that the quality and the efficiency of a film cast sheet are influenced. The utility model discloses can both fully cool off at the inside and outside both sides of during operation film casting piece, and the chilling temperature is even, reduces the production of wastrel, very big improvement the efficiency of production film casting piece.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a film casting piece chilling device to solve the problem that the above-mentioned background art part provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a film cast sheet chilling device, the oblique top of chill roll is provided with the die head, inside axial region inlet tube, a plurality of inlet tubes, outlet pipe and the axial region outlet pipe of being provided with of chill roll, the one end of axial region inlet tube and a plurality of inlet tubes is linked together, be provided with first circulation portion on the inner wall of chill roll, first circulation portion is linked together with the other end of a plurality of inlet tubes and the one end of outlet pipe, the other end of outlet pipe and the one end of axial region outlet pipe are linked together, and the other end of axial region outlet pipe stretches to the chill roll outside, the below of chill roll is provided with the chilling groove, the chilling groove is in the shape with chill roll assorted arc, install a plurality of mouths that spray towards one side of chill roll on the inner wall of chilling groove, chilling groove bottommost intercommunication has chilling groove water collecting pipe, and chilling groove water collecting pipe in proper order with the cooling unit, The cooling water pump is connected, a water outlet end and the cooling water inlet pipe of cooling water pump are linked together, another water outlet end and the axial region inlet tube of cooling water pump are linked together, be provided with second circulation portion on the inner wall in quench tank, second circulation portion and cooling water inlet pipe and a plurality of mouthful homogeneous phase intercommunication that sprays.

Furthermore, a cooling air knife is arranged on one side, away from the spraying opening, of the chilling roller, a water pressing roller is arranged above the cooling air knife, a stripping roller is arranged above the water pressing roller, and a guide roller set is connected to the stripping roller.

Furthermore, the material of the water pressing roller is sponge.

Further, the axial region inlet tube intercommunication all access to the inlet tube of first circulation portion, only one outlet pipe of axial region outlet pipe intercommunication, the inlet tube pipe diameter is less than the axial region inlet tube, outlet pipe diameter is the same with axial region outlet pipe diameter.

Further, the number of the spraying openings is six.

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

the utility model discloses a set up first circulation portion on the inner wall of chill roll, flow cooling water at first circulation portion inner loop, thereby realize fully cooling the internal surface of film casting piece, set up second circulation portion on the inner wall of chilling groove, make the cooling water that the circulation entered into the chilling inslot get into in a plurality of shower mouths from second circulation portion, spray the cooling through a plurality of shower mouths to the surface of film casting piece, thereby accomplish the cooling in the time of film casting piece internal and external surface, the cooling effect is good, and can not have the temperature difference so that reduce film casting piece quality, the waste of the reduction water resource that can also be fine.

Drawings

FIG. 1 is a schematic rear view of a thin film chilling apparatus according to the present invention;

FIG. 2 is a schematic cross-sectional view of a chill roll of a thin film chill apparatus according to the present invention;

FIG. 3 is a schematic cross-sectional view of a chill roll of a thin film chilling apparatus according to the present invention.

In the figure: 1 chilling roller, 2 die heads, 3 shaft part water inlet pipes, 4 water inlet pipes, 5 water outlet pipes, 6 shaft part water outlet pipes, 7 first circulation parts, 8 chilling grooves, 9 spraying openings, 10 chilling groove water collecting pipes, 11 cooling units, 12 cooling water pumps, 13 cooling water inlet pipes, 14 second circulation parts, 15 cooling air knives, 16 water pressing rollers, 17 stripping rollers and 18 guide roller groups.

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.

Referring to fig. 1-3, a film cast piece chilling device comprises a chilling roller 1, a die head 2 is arranged above the chilling roller 1 in an oblique manner, a shaft portion water inlet pipe 3, a plurality of water inlet pipes 4, a water outlet pipe 5 and a shaft portion water outlet pipe 6 are arranged inside the chilling roller 1, one end of the shaft portion water inlet pipe 3 is communicated with one end of the plurality of water inlet pipes 4, a first circulation portion 7 is arranged on the inner wall of the chilling roller 1, the first circulation portion 7 is communicated with the other end of the plurality of water inlet pipes 4 and one end of the water outlet pipe 5, the other end of the water outlet pipe 5 is communicated with one end of the shaft portion water outlet pipe 6, the other end of the shaft portion water outlet pipe 6 extends to the outer side of the chilling roller 1, a chilling groove 8 is arranged below the chilling roller 1, the chilling groove 8 is arc-shaped and matched with the chilling roller 1, six spraying ports 9 are arranged on one side, facing the chilling roller 1, of the inner wall of the chilling groove 8 is communicated with a chilling groove water collecting pipe 10 at the bottommost, and the chilling groove water collecting pipe 10 is sequentially connected with the cooling unit 11 and the cooling water pump 12, one water outlet end of the cooling water pump 12 is communicated with the cooling water inlet pipe 13, the other water outlet end of the cooling water pump 12 is communicated with the shaft part water inlet pipe 3, the inner wall of the chilling groove 8 is provided with a second circulation part 14, and the second circulation part 14 is communicated with the cooling water inlet pipe 13 and the six spraying ports 9.

In the above embodiment, the first circulation portion 7 is arranged on the inner wall of the chill roll 1, and the cooling water circulates in the first circulation portion 7, so as to achieve sufficient cooling of the inner surface of the film cast piece, the second circulation portion 14 is arranged on the inner wall of the chill tank 8, so that the cooling water circulating into the chill tank 8 enters the plurality of spray ports 9 from the second circulation portion 14, and the outer surface of the film cast piece is spray-cooled through the plurality of spray ports 9, so as to complete simultaneous cooling of the inner surface and the outer surface of the film cast piece, the cooling effect is good, the temperature difference cannot exist, so that the quality of the film cast piece is reduced, and the waste of water resources can be well reduced.

Specifically, a cooling air knife 15 is arranged on one side, away from the spraying opening 9, of the chill roll 1, a water pressing roll 16 is arranged above the cooling air knife 15, the water pressing roll 16 is made of sponge, a stripping roll 17 is arranged above the water pressing roll 16, and a guide roll group 18 is connected to the stripping roll 17.

In the above embodiment, the cooling air knife 15, the water pressure roller 16, and the peeling roller 17 can completely treat the moisture on the film cast sheet to be dry, increasing the yield of the film cast sheet.

Specifically, the shaft part inlet tube 3 communicates all inlet tubes 4 leading to the first circulation part 7, the shaft part outlet tube 6 communicates only one outlet tube 5, the pipe diameter of the inlet tube 4 is smaller than that of the shaft part inlet tube 3, and the pipe diameter of the outlet tube 5 is the same as that of the shaft part outlet tube 6.

In the above described embodiments, it is an advantage that the cooling water inside the chill roller 1 can be allowed to flow completely out of the chill roller 1 after cooling.

The working principle is as follows: the material in a fluid state is extruded to the chill roll 1 by a discharge port die head 2 through pressure to be cooled, the cooling water enters the chill roll 1 through a shaft part water inlet pipe 3 firstly, then the cooling water is conveyed to a first circulation part 7 by a plurality of water inlet pipes 4 communicated with the shaft part water inlet pipe 3 to cool the inner wall of the chill roll 1, so that the inner surface of the film cast piece is cooled, the tail end of the shaft part water inlet pipe 3 is blocked, the cooling water after the cooling water is circularly cooled in the first circulation part 7 can only flow to a shaft part water outlet pipe 6 through a water outlet pipe 5 and flows to a chill tank 8 through the shaft part water outlet pipe 6, the water in the chill tank 8 enters a cooling unit 11 through a chill tank water collecting pipe 10 to be cooled, the water enters a cooling water pump 12, one water outlet of the cooling water pump 12 is connected to a cooling water inlet pipe 13, the cooling water is conveyed to the spraying ports 9 through the second circulation part 14, the spraying ports 9 spray the cooling water to the outer surface of the film casting sheet, so that the outer surface of the film casting sheet is cooled, the cooling water after the outer surface of the film casting sheet is cooled falls into the quenching tank 8 again, the other water outlet of the cooling water pump 12 is connected to the shaft water inlet pipe 3, the inner wall of the chill roll 1 is cooled again, the film casting sheet is air-dried through the cooling air knife 15 after being cooled, and then passes through the guide roll group 18 through the stripping roll 17 under the drying action of the water pressing roll 16, so that the whole process of the primary film casting sheet cooling is realized.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (5)

1. The film cast piece chilling device comprises a chilling roller (1) and is characterized in that a die head (2) is arranged above the chilling roller (1) in an inclined mode, a shaft portion water inlet pipe (3), a plurality of water inlet pipes (4), a water outlet pipe (5) and a shaft portion water outlet pipe (6) are arranged inside the chilling roller (1), the shaft portion water inlet pipe (3) is communicated with one ends of the water inlet pipes (4), a first circulation portion (7) is arranged on the inner wall of the chilling roller (1), the first circulation portion (7) is communicated with the other ends of the water inlet pipes (4) and one end of the water outlet pipe (5), the other end of the water outlet pipe (5) is communicated with one end of the shaft portion water outlet pipe (6), the other end of the shaft portion water outlet pipe (6) extends to the outer side of the chilling roller (1), a chilling groove (8) is arranged below the chilling roller (1), and the chilling groove (8) is arc-shaped and matched with the chilling roller (1), a plurality of spraying openings (9) are installed on one side of the inner wall of the chilling groove (8) facing to the chilling roller (1), the bottommost portion of the chilling groove (8) is communicated with a chilling groove water collecting pipe (10), the chilling groove water collecting pipe (10) is sequentially connected with a cooling unit (11) and a cooling water pump (12), a water outlet end of the cooling water pump (12) is communicated with a cooling water inlet pipe (13), the other water outlet end of the cooling water pump (12) is communicated with a shaft portion water inlet pipe (3), a second circulation portion (14) is arranged on the inner wall of the chilling groove (8), and the second circulation portion (14) is communicated with the cooling water inlet pipe (13) and a plurality of spraying openings (9) in a homogeneous phase mode.

2. A chilling device for thin film cast strip according to claim 1, wherein a cooling air knife (15) is arranged on one side of the chilling roller (1) far away from the spraying opening (9), a water pressing roller (16) is arranged above the cooling air knife (15), a stripping roller (17) is arranged above the water pressing roller (16), and a guide roller group (18) is connected to the stripping roller (17).

3. A thin film chilling apparatus according to claim 2, wherein the material of said pressure water roller (16) is sponge.

4. A chilling apparatus for thin film cast strip according to claim 1, wherein the shaft portion water inlet pipe (3) communicates with all water inlet pipes (4) leading to the first communicating portion (7), the shaft portion water outlet pipe (6) communicates with only one water outlet pipe (5), the diameter of the water inlet pipe (4) is smaller than that of the shaft portion water inlet pipe (3), and the diameter of the water outlet pipe (5) is the same as that of the shaft portion water outlet pipe (6).

5. A thin film chilling apparatus according to claim 1, wherein the number of said spray ports (9) is six.

Images