CN213675050U

CN213675050U - Film cooling roller

Info

Publication number: CN213675050U
Application number: CN202022718093.5U
Authority: CN
Inventors: 何海潮; 禹冰冰
Original assignee: SUZHOU JWELL PRECISION MACHINERY CO Ltd
Current assignee: SUZHOU JWELL PRECISION MACHINERY CO Ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-07-13
Anticipated expiration: 2030-11-23

Abstract

The utility model discloses a film cooling roller, include: the roller comprises a roller body, an inner container flange, a pair of roller shafts and a pair of inner pipes, wherein spiral ribs are welded on the outer wall of the inner container to form spiral flow channels of cooling water, and the spiral flow channels are distributed in an interlayer between the roller body and the inner container; the inner container flange is arranged in the inner container, the pair of roll shafts are respectively arranged at two end parts of the roll body, shaft head inner holes are respectively formed in the roll shafts, the pair of inner tubes are respectively inserted into the shaft head inner holes of the pair of roll shafts, the roll shafts are respectively and uniformly provided with a plurality of water outlet small holes along the circumferential direction, the roll shafts are also provided with water inlet channels communicated with the inner cavities of the inner tubes, the water inlet channels are communicated with a plurality of shunting holes and spiral flow channels, the water outlet small holes are communicated with the spiral flow channels and the shaft head inner holes, and water outlet channels are formed between the inner tubes and the shaft head inner holes. The utility model discloses both ends temperature difference is little, guarantees that roller cooling temperature is stable, can cool off goods fast.

Description

Film cooling roller

Technical Field

The utility model belongs to the processing equipment field of film sheet, in particular to be used for carrying out refrigerated chill roll to the film.

Background

In the fields of plastic sheets, film processing, nonwoven fabrics, leather processing, paper making, printing industry, steel manufacturing (film sheets), and the like, it is often necessary to cool down a processed article by a cooling roll. Particularly, when a film or a sheet is calendered, the finished product is deformed due to shrinkage during rolling, and the finished product needs to be cooled by a cooling roller before rolling to achieve the purpose of reducing material deformation.

The roller in the prior art generally comprises a roller shaft and a roller body, the roller body is sleeved outside the roller shaft, sealing end covers are arranged at two ends of the roller, a cooling water channel is arranged between the roller body and the roller shaft, a water inlet and a water outlet which are communicated with the cooling water channel are respectively arranged at two ends of the roller shaft, cooling water enters from the water inlet at one end of the roller shaft and finally flows out from the water outlet at the other end of the roller shaft through the cooling water channel. Because the cooling water route is longer for roller cooling surface temperature flows into through cooling water route temperature gradual change from the water inlet, leads to roller cooling surface both ends temperature difference, also has the difference to the goods cooling.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a both ends temperature is even, the fast chill roll of cooling rate.

The utility model adopts the technical proposal that: a film cooling roll comprising: the roller body is sleeved outside the inner container, a plurality of shunting holes are uniformly formed in the inner container in the circumferential direction of the axial middle position, spiral ribs are welded on the outer wall of the inner container to form spiral flow channels of cooling water, and the spiral flow channels are distributed in an interlayer between the roller body and the inner container; the inner bag flange sets up within the inner bag, it is a pair of the roller set up respectively two tip of roller body, each the roller seted up the spindle nose hole respectively, it is a pair of the inner tube insert respectively in a pair of the spindle nose hole of roller, each the roller still respectively along the circumferencial direction evenly set up a plurality of outlet aperture, it is a pair of the roller on still set up with the inhalant canal of the inner chamber intercommunication of inner tube, inhalant canal with a plurality of diffluence pass and spiral runner intercommunication, outlet aperture intercommunication spiral runner with the spindle nose hole, the inner tube with form out the water passageway between the spindle nose hole.

Preferably, the inner container flange and the roll shaft are assembled in a thermal interference manner.

Preferably, the roller body is made of high-quality alloy steel.

Preferably, the surface of the roller body is provided with a hard chromium coating.

Preferably, the surface of the roller body is subjected to multiple polishing treatments to achieve a mirror finish.

Preferably, the inner container is made of a seamless steel tube.

Preferably, the inner diameter of the inner pipe is larger than or equal to the inner diameter of the water inlet channel.

Preferably, the inner diameter of the inner hole of the shaft head is larger than the outer diameter of the inner pipe, and the inner diameters of the diversion hole and the water outlet small hole are less than or equal to half of the inner diameter of the inner pipe.

The utility model provides a cooling water flow is big, can cool off fast, the balanced chill roll of both ends difference in temperature, can be favorable to the quick design of film products, can effectively reduce the difference of goods surface color and luster, can make the rapid cooling of the temperature on goods surface get off.

Drawings

FIG. 1 is a view showing the structure of the flow direction of water inside a roll;

fig. 2 is a schematic view of the flow passage of the present invention;

wherein: 1. a roll body; 2. an inner container; 201. a shunt hole; 3. an inner container flange; 4. a roll shaft; 41. a first spindle nose; 42. a second spindle head; 43. a shaft body; 401. an inner hole of the shaft head; 402. a small water outlet hole; 403. a water inlet channel; 5. an inner tube; 6. a spiral flow channel; 601. a spiral rib; 7. and a water outlet channel.

Detailed Description

To explain the technical content, structural features, achieved objects and functions of the present invention in detail, the following detailed description is made with reference to the accompanying drawings.

As shown in fig. 1, a film cooling roll includes: the roller comprises a roller body 1, an inner container 2, an inner container flange 3, a pair of roller shafts 4 and a pair of inner pipes 5. The roller body 1 is coaxially sleeved outside the inner container 2. Six shunting holes 201 are uniformly formed in the middle of the inner container 2 in the circumferential direction, spiral ribs 601 are welded on the outer wall of the inner container 2 to form a spiral flow channel 6 of cooling water, and the spiral flow channel 6 is distributed in an interlayer between the roller body 1 and the inner container 2. The liner flange 3 is assembled in the cavity of the liner 2 in an interference manner. The roll shaft 4 is respectively welded on the inner container 2 and the roll body 1, the roll shaft 4 is a hollow revolving body structure with two thin ends and a thick middle part, a shaft head inner hole 401 is formed in a first shaft head 41, the inner tube 5 is inserted into the shaft head inner hole 401, and a second shaft head 42 of the roll shaft 4 is inwards inserted into an inner cavity of the inner container 2 and is welded with the inner container flange 3. The thicker part of the middle part of the roll shaft 4 is respectively welded with the inner container 2 and the roll body 1, the end part of the cooling roll forms a plug for the spiral flow channel 6, and six small water outlet holes 402 (see figure 2) are uniformly arranged on the roll shaft 4 in the circumferential direction. A water inlet channel 403 is arranged in the axial direction of the roll shaft 4, and the water inlet channel 403 penetrates through two shaft heads of the roll shaft 4: a first stub shaft 41 and a second stub shaft 42. An axle head inner hole 401 is formed in the axial direction of the first axle head 41 of the roll shaft 4, and the aperture of the axle head inner hole 401 is larger than that of the water inlet channel 403. As the inner tube 5 is arranged in the inner hole 401 of the shaft head, a water outlet channel 7 is formed between the inner tube 5 and the inner hole 401 of the shaft head.

When the cooling roller is machined, firstly, the roller shaft 4 is machined, the outer diameter is roughly turned, the water inlet channel 403 and the shaft head inner hole 401 are bored, then the small water holes 402 are drilled on the roller shaft 4, and the shunting holes 201 are drilled on the inner container 2. The inner container 2, the roll shaft 4 and the inner container flange 3 are assembled in a thermal interference mode and welded to form an inner container assembly, and finally the spiral ribs 601 are welded on the outer wall of the inner container 2. The whole inner container assembly is placed on a lathe for rough turning and finish turning to ensure the whole concentricity, then the processed roller body 1 is heated to 100-150 ℃, the heat is preserved for 3 hours, and then the whole roller body 1 is sleeved on the inner container assembly in a hot manner. The joint of the roller body 1 and the shaft body 43 of the roller shaft 4 is welded and tempered after welding to remove stress. And finally, roughly turning, semi-finely turning, finely turning and roughly grinding the roller on the whole machine tool. The straightness and concentricity of the roller body 1 are ensured by the processing, and electroplating, polishing and polishing are carried out after coarse grinding.

When products are rolled, cooling water flows into the roller from the inner tubes 5 at two ends simultaneously, flows into the roller through the water inlet channel 403, then flows into the inner container 2 and the roller body 1 interlayer through the diversion holes 201 on the inner container 2 in the roller, enters the spiral flow channel 6, water flow is uniformly distributed on the outer wall of the inner container 2 in the spiral flow channel 6, returns to two ends of the roller, then flows into the water outlet small holes 402 of the roller shaft 4, and flows out of the roller from the inner tubes 5 and the water outlet channel 7 of the shaft head inner hole 401. The inner diameter of the inner hole 401 of the shaft head is larger than the outer diameter of the inner pipe 5, and the inner diameters of the diversion hole 201 and the small water outlet hole 402 are less than or equal to half of the inner diameter of the inner pipe 5.

The roller body 1 is made of alloy steel, the wall thickness is designed to be thin, heat conduction is fast, the cooling effect is good, hard chromium is plated on the surface of the roller body 1, and the mirror surface effect is achieved through grinding and multiple polishing treatment. This structure not only enhances the cooling uniformity of the roll body 1 but also ensures sufficient strength of the overall apparatus.

As shown in fig. 2, the inner container 2 is unfolded along the circumferential direction, the spiral ribs 601 are equidistantly welded on the outer wall of the inner container 2, a gap between the spiral ribs 601 forms a flow channel of a medium, the spiral flow channel 6 is favorable for reducing the resistance of water, and cooling water is uniformly distributed on the surface of the inner container 2, so that the temperature of the roller body 1 is uniformly cooled, the temperature difference between two ends is small, the stability of the cooling temperature of the roller is ensured, products can be rapidly cooled, and the purpose of high efficiency of product processing is realized.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A film cooling roll, comprising: the roller comprises a roller body (1), an inner container (2), an inner container flange (3), a pair of roller shafts (4) and a pair of inner pipes (5), wherein the roller body (1) is sleeved outside the inner container (2), the inner container (2) is uniformly provided with a plurality of shunting holes (201) in the circumferential direction of the middle position in the axial direction, spiral ribs (601) are welded on the outer wall of the inner container (2) to form a plurality of cooling water spiral flow channels (6), and the spiral flow channels (6) are distributed in an interlayer between the roller body (1) and the inner container (2); the inner container flange (3) is arranged in the inner container (2), the pair of roll shafts (4) are respectively arranged at two end parts of the roll body (1), each roll shaft (4) is respectively provided with a shaft head inner hole (401), the pair of inner pipes (5) are respectively inserted into the shaft head inner holes (401) of the pair of roll shafts (4), each roll shaft (4) is also respectively and uniformly provided with a plurality of small water outlet holes (402) along the circumferential direction, a pair of roll shafts (4) are also provided with water inlet channels (403) communicated with the inner cavity of the inner pipe (5), the water inlet channel (403) is communicated with the plurality of diversion holes (201) and the spiral flow passage (6), the small water outlet hole (402) is communicated with the spiral flow passage (6) and the shaft head inner hole (401), and a water outlet channel (7) is formed between the inner tube (5) and the shaft head inner hole (401).

2. The film cooling roller as claimed in claim 1, wherein the inner container (2), the inner container flange (3) and the roller shaft (4) are assembled in a thermal interference manner.

3. Film cooling roll according to claim 1, characterised in that the roll body (1) is manufactured from high-quality alloy steel.

4. A film cooling roll according to claim 1, characterised in that the surface of the roll body (1) has a hard chrome coating.

5. A film cooling roll according to claim 1, characterized in that the surface of the roll body (1) is subjected to multiple polishing treatments to achieve a mirror finish.

6. The film cooling roll according to claim 1, characterized in that the inner container (2) is made of seamless steel tube.

7. A film cooling roll according to claim 1, characterized in that the inner diameter of the inner pipe (5) is equal to or larger than the inner diameter of the water inlet channel (403).

8. A film cooling roller according to claim 1, characterized in that the inner diameter of the inner hole (401) of the spindle head is larger than the outer diameter of the inner tube (5), and the inner diameters of the diversion hole (201) and the small water outlet hole (402) are less than or equal to half of the inner diameter of the inner tube (5).