Roller for high-speed cooling of sheets

Abstract

The utility model discloses a roller for high-speed cooling of sheets, which comprises a roller body assembly, a left shaft head assembly, a right shaft head assembly and an inner core assembly, wherein the left shaft head assembly and the right shaft head assembly are respectively mounted at the left end part and the right end part of the roller body assembly; the roller body assembly comprises a cylindrical inner container, an outer roller body coaxially arranged on the inner container in a sleeving mode and a plurality of spiral flow channels between the outer roller body and the inner container. The right shaft head assembly is provided with a shaft head through hole extending in the left-right direction. The inner core assembly comprises an external connection inner pipe arranged in the shaft head through hole in a penetrating mode, an inner core pipe arranged in the inner container in a penetrating mode and a pair of inner core fixing plates arranged in a left-right opposite mode, and the external connection inner pipe and the inner core pipe are in butt joint to form a one-way water inlet channel. A water inlet cavity communicated with the water inlet channel and a water outlet cavity communicated with the shaft head through hole are defined by the pair of inner core fixing plates, the left shaft head assembly, the right shaft head assembly and the inner container respectively. The inner container is provided with a plurality of water inlet grooves in the circumferential direction of the water inlet cavity and a plurality of water outlet grooves in the circumferential direction of the water outlet cavity.

Description

Technical Field

[0001] This application relates to the technical field of cooling roller equipment, and particularly to a roller for high-speed cooling of sheet materials. Background Art

[0002] PP / PS sheet materials are widely used in various industries and can be used for food packaging, etc. With the increasing market demand, the requirements for PP / PS production are also getting higher and higher. The PP / PS production line has also entered the ranks of high-efficiency, high-yield, and energy-saving. The roller is an important equipment in the PP / PS production line. Due to the high-speed operation of the PP / PS production line, the roller needs to quickly cool the sheet materials. At present, the water inlet and outlet efficiency of the roller is low and cannot meet the high-speed requirements of the production line. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of this application is to provide a roller for high-speed cooling of sheet materials.

[0004] To achieve the above purpose, this application adopts the following technical solutions: A roller for high-speed cooling of sheet materials, comprising:

[0005] A roll body assembly, including an inner liner in a cylindrical shape, an outer roll body coaxially sleeved on the inner liner, and a plurality of spiral flow channels formed between the outer roll body and the inner liner;

[0006] A left shaft head assembly, installed at the left end of the roll body assembly;

[0007] A right shaft head assembly, installed at the right end of the roll body assembly, and the right shaft head assembly has a shaft head through hole extending in the left-right direction; and

[0008] An inner core assembly, including an externally connected inner tube coaxially penetrating through the shaft head through hole, an inner core tube coaxially penetrating through the inner liner, and a pair of inner core fixing plates arranged opposite to each other left and right. Both ends of the inner core tube respectively penetrate through a pair of the inner core fixing plates. The pair of inner core fixing plates are fixedly installed inside the inner liner and are coaxially arranged with the inner liner. The externally connected inner tube is docked with the inner core tube to form a one-way water inlet channel. One of the inner core fixing plates, the left shaft head assembly, and the inner liner define a water inlet cavity communicating with the water inlet channel. The other inner core fixing plate, the right shaft head assembly, and the inner liner define a water outlet cavity communicating with the shaft head through hole;

[0009] Wherein, a plurality of water inlet grooves communicating the water inlet cavity and the plurality of spiral flow channels are formed on the inner liner, and a plurality of water outlet grooves communicating the plurality of spiral flow channels and the water outlet cavity are formed.

[0010] In the above technical solution, further preferably, a plurality of spiral grooves are formed on the outer wall surface of the inner tank, the plurality of spiral grooves are arranged at intervals along the circumferential direction of the inner tank, and each of the spiral grooves spirally extends along the axial direction of the inner tank. Each of the spiral grooves and the inner wall surface of the outer roll body define a spiral flow channel, and each spiral flow channel communicates with a water inlet groove and a water outlet groove.

[0011] In the above technical solution, further preferably, a first stop hole is formed at the left end of the inner tank, and a second stop hole is formed at the right end of the inner tank. The first stop hole and the second stop hole are both coaxial with the inner tank, and the diameters of the first stop hole and the second stop hole are both larger than the inner diameter of the inner tank.

[0012] In the above technical solution, further preferably, an installation hole for the end of the inner core tube to pass through is formed in the middle of each inner core fixing plate. The inner core fixing plate connected to the left end of the inner core tube is matched with the first stop hole, and the inner core fixing plate connected to the right end of the inner core tube is matched with the second stop hole.

[0013] In the above technical solution, further preferably, the length of the inner core tube is less than the dimension of the inner tank in the left-right direction.

[0014] In the above technical solution, further preferably, the left shaft head assembly includes a solid shaft head and a left shaft sleeve flange. The left shaft sleeve flange is coaxially arranged at the left end of the outer roll body, and the solid shaft head is coaxially inserted through the middle of the left shaft sleeve flange.

[0015] In the above technical solution, further preferably, the right shaft head assembly includes a hollow shaft head and a right shaft sleeve flange. The right shaft sleeve flange is coaxially arranged at the right end of the outer roll body, the hollow shaft head is coaxially inserted through the middle of the right shaft sleeve flange, the shaft head through hole is formed in the hollow shaft head, and the inner diameter of the shaft head through hole is larger than the outer diameter of the externally connected inner tube.

[0016] In the above technical solution, further preferably, the outer roll body is a thin-walled seamless tube.

[0017] In the above technical solution, further preferably, the inner core assembly, the inner tank, the outer roll body, the left shaft head assembly and the right shaft head assembly are assembled by coaxial hot sleeving.

[0018] The present application has the following beneficial effects compared with the prior art:

[0019] In this application, a pair of inner core fixing plates arranged inside the inner tank, as well as the water inlet groove and water outlet groove opened on the inner tank, enable the formation of a water inlet cavity and a water outlet cavity that communicate with the spiral flow channel between the two shaft head assemblies, the inner tank, and the inner core fixing plates. Through the docking of the externally connected inner pipe and the inner core pipe, the water inlet channel for water supply is connected to the water inlet cavity, and the shaft head through hole for water outlet is connected to the water outlet cavity, forming a one-way water conveyance path with fast and smooth water flow. There is no need for shaft head drilling and additional connecting pipes, and the roller with one-way shaft head for water inlet and outlet can be applied to special working conditions. The structure of this application is simple, easy to install, can be applied to different working conditions, has high cooling water conveyance efficiency, high cooling efficiency of the roller, and strong cooling effect. Description of the Drawings

[0020] Figure 1 Schematic diagram of the internal structure of a roller provided by an embodiment of this application;

[0021] Figure 2 is Figure 1 Partial enlarged schematic diagram at position A in

[0022] Figure 3 is Figure 1 Partial enlarged schematic diagram at position B in

[0023] Figure 4 is Figure 1 Stereoscopic structure schematic diagram of the inner tank in

[0024] Wherein: 100, roller; 10, roller body assembly; 1, inner tank; 11, spiral groove; 12, water inlet groove; 13, water outlet groove; 14, first stop hole; 15, second stop hole; 2, outer roller body; 3, spiral flow channel; 20, left shaft head assembly; 41, solid shaft head; 42, left sleeve flange; 30, right shaft head assembly; 51, hollow shaft head; 510, shaft head through hole; 52, right sleeve flange; 40, inner core assembly; 6, externally connected inner pipe; 7, inner core pipe; 8, inner core fixing plate; 91, water inlet channel; 92, water outlet channel; 93, water inlet cavity; 94, water outlet cavity. Detailed Embodiment

[0025] To describe in detail the technical content, structural features, achieved objectives and effects of the application, the technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, the various exemplary embodiments can also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, the various exemplary embodiments can be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shapes, structures and characteristics of the exemplary embodiments can be used or implemented in another exemplary embodiment.

[0026] An embodiment of the present application provides a roller for high-speed cooling of sheet materials. As Figure 1 shown, the roller 100 includes a roller body assembly 10, a left shaft head assembly 20 installed at the left end of the roller body assembly 10, a right shaft head assembly 30 installed at the right end of the roller body assembly 10, and a core assembly 40 installed inside the roller body assembly 10.

[0027] As Figure 1 , 4 shown, the roller body assembly 10 includes a cylindrical inner liner 1, an outer roller body 2 coaxially sleeved on the inner liner 1, and a plurality of spiral flow channels 3 formed between the outer roller body 2 and the inner liner 1. The inner liner 1 is made of seamless pipe. A plurality of spiral grooves 11 are formed on the outer wall surface of the inner liner 1. The plurality of spiral grooves 11 are arranged at intervals along the circumferential direction of the inner liner, and each spiral groove 11 spirally extends along the axial direction of the inner liner 1. Each spiral groove 11 and the inner wall surface of the outer roller body 2 define a spiral flow channel 3. After the spiral grooves 11 are milled on the outer wall surface of the inner liner 1, the outer roller body 2 is coaxially heat-sleeved on the outside of the inner liner 1. Cooling water is supplied in the spiral flow channels 3. The outer roller body 2 is a thin-walled seamless pipe. The thinner outer roller body 2 can accelerate the heat exchange speed between the roller surface and the cooling water and enhance the cooling effect. The spiral grooves 11 on the inner liner 1 supply cooling water, and the groove walls of the spiral grooves 11 support the outer roller body 2, increasing the overall strength of the roller body assembly 10.

[0028] The left shaft head assembly 20 includes a solid shaft head 41 and a left shaft sleeve flange 42. The left shaft sleeve flange 42 is coaxially arranged at the left end of the outer roller body 2. The inner liner 1 and the outer roller body 2 are coaxially heat-sleeved on the circumference of the left shaft sleeve flange 42. The left shaft sleeve flange 42 seals the gap between the left end of the inner liner 1 and the left end of the outer roller body 2. The solid shaft head 41 is coaxially inserted through the middle of the left shaft sleeve flange 42, and the solid shaft head 41 is heat-sleeved and assembled with the left shaft sleeve flange 42.

[0029] The right shaft head assembly 30 includes a hollow shaft head 51 and a right sleeve flange 52. The right sleeve flange 52 is coaxially arranged at the right end of the outer roller body 2. The inner liner 1 and the outer roller body 2 are coaxially shrink-fitted in the circumference of the right sleeve flange 52. The right sleeve flange 52 blocks the gap between the right end of the inner liner 1 and the right end of the outer roller body 2. The hollow shaft head 51 is coaxially penetrated in the middle of the right sleeve flange 52, and the hollow shaft head 51 and the right sleeve flange 52 are shrink-fitted and assembled. The hollow shaft head 51 is provided with a shaft head through hole 510 extending in the left-right direction. The shaft head through hole 510 communicates the inside of the roller body assembly 10 and the outside of the roller 100.

[0030] like Figures 1-3 As shown, the inner core assembly 40 includes an external inner tube 6 coaxially inserted into the shaft head through hole 510, an inner core tube 7 coaxially inserted into the inner liner 1, and a pair of inner core fixing plates 8 arranged opposite to each other on the left and right sides. The length of the inner core tube 7 is smaller than the size of the inner liner 1 in the left and right directions, and a mounting hole for the end of the inner core tube 7 to be inserted is opened in the middle of each inner core fixing plate 8. The pair of inner core fixing plates 8 are coaxially arranged inside the inner liner 1, and the inner core tube 7 is supported inside the inner liner 1 by the pair of inner core fixing plates 8 extending in the left and right directions. The external inner tube 6 is inserted into the shaft head through hole 510 and is connected to the inner core tube 7 to form a one-way water inlet channel 91; the outer diameter of the external inner tube 6 is smaller than the inner diameter of the shaft head through hole 510, and the gap between the outer wall surface of the external inner tube 6 and the shaft head through hole 510 forms a water outlet channel 92. The inner core fixing plate 8 on the left side, the left shaft head assembly 20 and the inner liner 1 define a water inlet chamber 93 connected to the water inlet channel 91, and the inner core fixing plate 8 on the right side, the right shaft head assembly 30 and the inner liner 1 define a water outlet chamber 94 connected to the water outlet channel 92. The external inner tube 6 passes through the water outlet chamber 94 and docks with the inner core tube 7 to separate the water inlet channel 91 and the water outlet channel 92.

[0031] like Figure 1 , 4As shown, a number of water inlet grooves 12 and a number of water outlet grooves 13 are formed on the inner tank 1. The number of water inlet grooves 12 and the number of water outlet grooves 13 are the same as the number of spiral grooves 11. The number of water inlet grooves 12 are arranged at intervals along the circumferential direction of the water inlet cavity 93, so as to fluidly connect the water inlet cavity 93 and a number of spiral flow channels 3; the number of water outlet grooves 13 are arranged at intervals along the circumferential direction of the water outlet cavity 94, so as to fluidly connect the water outlet cavity 94 and a number of spiral flow channels 3. Each spiral flow channel 3 is connected to a water inlet groove 12 and a water outlet groove 13. The water inlet passage 91, the water inlet cavity 93, a number of water inlet grooves 12, a number of spiral flow channels 3, a number of water outlet grooves 13, the water outlet cavity 94 and the water outlet passage 92 are connected in sequence to form a one-way conveying path for conveying cooling water. The cooling water enters the roller 100 from the right shaft head assembly 30. The cooling water enters a number of spiral flow channels 3 via the water inlet passage 91 and the water inlet cavity 93, and exchanges heat with the outer roller body 2 during the conveyance in the spiral flow channels 3 to reduce the temperature of the roller surface, and then is output from the water outlet cavity 94 via the water outlet passage 92.

[0032] Continue to refer to Figures 1-3 , a first stop hole 14 is formed at the left end of the inner tank 1, and a second stop hole 15 is formed at the right end of the inner tank 1. The first stop hole 14 and the second stop hole 15 are both coaxial with the inner tank, and the diameters of the first stop hole 14 and the second stop hole 15 are both larger than the inner diameter of the inner tank 1; the left inner core fixing plate 8 is matched with the first stop hole 14, and the right inner core fixing plate 8 is matched with the second stop hole 15. The first stop hole 14 and the second stop hole 15 are used to limit the positions of a pair of inner core fixing plates 8 in the left-right direction. When the inner tank 1 is shrink-fitted on the circumferential direction of a pair of inner core fixing plates 8, stop holes matched with the shaft sleeve flange are respectively machined at both ends of the inner tank 1, so as to facilitate the installation of the left shaft head assembly 20 and the right shaft head assembly 30.

[0033] The inner core assembly 40, the inner tank 1, the outer roller body 2, the left shaft head assembly 20 and the right shaft head assembly 30 are assembled by coaxial shrink-fitting. The groove walls of a pair of inner core fixing plates 8 and the spiral grooves 11 on the inner tank 1 strengthen the support for the outer roller body 2 and enhance the overall strength of the roller 100.

[0034] In this application, through a pair of inner core fixing plates arranged inside the inner tank and the water inlet grooves and water outlet grooves formed on the inner tank, a water inlet cavity and a water outlet cavity communicating with the spiral flow channels are formed between the two shaft head assemblies and the inner tank and the inner core fixing plates. By docking the external inner pipe and the inner core pipe, the water inlet passage for supplying water is connected to the water inlet cavity, and the shaft head through hole for discharging water is connected to the water outlet cavity, forming a one-way water conveyance path with fast and smooth water flow. There is no need to open holes on the shaft head and connect additional connecting pipes, and the roller with one-way shaft head inlet and outlet water can be applied to special working conditions. The structure of this application is simple and the installation is convenient. It can be applied to different working conditions, has high cooling water conveyance efficiency, high cooling efficiency of the roller and strong cooling effect.

[0035] The foregoing has shown and described the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements. The scope of protection claimed by the present application is defined by the appended claims, the specification and their equivalents.

Claims

1. A roller for high-speed cooling of sheets, characterized in that: include: The roller body assembly comprises a cylindrical inner shell, an outer roller body coaxially sleeved on the inner shell, and a plurality of spiral flow channels formed between the outer roller body and the inner shell; A left shaft head assembly is installed at the left end of the roller body assembly; A right shaft head assembly is installed at the right end of the roller body assembly, and the right shaft head assembly has a shaft head through hole extending in the left-right direction; and An inner core assembly, comprising an external inner tube coaxially inserted into the shaft head through hole, an inner core tube coaxially inserted into the inner liner, and a pair of inner core fixing plates arranged opposite to each other on the left and right sides, the two ends of the inner core tube are respectively inserted into a pair of inner core fixing plates, the pair of inner core fixing plates are fixedly installed inside the inner liner and are coaxially arranged with the inner liner, the external inner tube is butted against the inner core tube to form a one-way water inlet channel, one inner core fixing plate and the left shaft head assembly and the inner liner define a water inlet chamber connected to the water inlet channel, and the other inner core fixing plate and the right shaft head assembly and the inner liner define a water outlet chamber connected to the shaft head through hole; Wherein, the inner tank is provided with a plurality of water inlet grooves connecting the water inlet cavity and the plurality of spiral flow channels, and a plurality of water outlet grooves connecting the plurality of spiral flow channels and the water outlet cavity.

2. The roller according to claim 1, characterized in that The outer wall surface of the inner liner is provided with a plurality of spiral grooves, the plurality of spiral grooves are arranged at intervals along the circumference of the inner liner, and each of the spiral grooves extends in an axial spiral along the axial direction of the inner liner, each of the spiral grooves and the inner wall surface of the outer roller body define a spiral flow channel, and each of the spiral flow channels is connected to a water inlet groove and a water outlet groove.

3. The roller according to claim 1, characterized in that A first stop hole is formed at the left end of the inner container, and a second stop hole is formed at the right end of the inner container. The first stop hole and the second stop hole are coaxial with the inner container, and the diameter of the first stop hole and the diameter of the second stop hole are both larger than the inner diameter of the inner container.

4. The roller according to claim 3, characterized in that A mounting hole for the end of the inner core tube to pass through is opened in the middle of each inner core fixing plate, the inner core fixing plate connected to the left end of the inner core tube cooperates with the first stop hole, and the inner core fixing plate connected to the right end of the inner core tube cooperates with the second stop hole.

5. The roller according to claim 4, characterized in that The length of the inner core tube is smaller than the dimension of the inner liner in the left-right direction.

6. The roller according to claim 1, characterized in that The left shaft head assembly comprises a solid shaft head and a left shaft sleeve flange, wherein the left shaft sleeve flange is coaxially arranged at the left end of the outer roller body, and the solid shaft head is coaxially penetrated through the middle of the left shaft sleeve flange.

7. The roller according to claim 1, characterized in that The right shaft head assembly includes a hollow shaft head and a right shaft sleeve flange. The right shaft sleeve flange is coaxially arranged at the right end of the outer roller body, and the hollow shaft head is coaxially penetrated through the middle of the right shaft sleeve flange. The shaft head through hole is opened on the hollow shaft head, and the inner diameter of the shaft head through hole is larger than the outer diameter of the external inner tube.

8. The roller according to claim 1, characterized in that The outer roller body is a thin-wall seamless tube.

9. The roller according to claim 1, characterized in that The inner core component, the inner liner, the outer roller body, the left shaft head component and the right shaft head component are coaxially assembled by heat-shrink sleeve.

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