Cooling roller for sheet forming

Abstract

The utility model relates to the technical field of sheet forming, in particular to a cooling roller for sheet forming, which defines an axial lead and a fluid path for cooling water to flow. The cooling roller comprises an inner core extending in the axial direction, a roller body arranged outside the inner core in a sleeving mode and extending in the axial direction, a first end cover fixedly installed at the end of one side of the inner core, a second end cover fixedly installed at the end of the other side of the inner core, a first shaft head fixedly connected with the first end cover, and a second shaft head fixedly connected with the second end cover. The first end cover and the second end cover are both detachably connected with the roller body, and the maximum outer diameter of the first end cover and the maximum outer diameter of the first shaft head are both not larger than the minimum inner diameter of the roller body. When the roller body of the cooling roller is damaged or sheets need to be subjected to different surface treatments, the roller body can be pulled away from the inner core along the axis and replaced after the detachable connection between the first end cover and the roller body and the detachable connection between the second end cover and the roller body are removed. Therefore, the maintenance cost of the cooling roller and the production cost of the formed sheet are reduced.

Description

Technical Field

[0001] This utility model relates to the field of sheet forming technology, and in particular to a cooling roller for sheet forming. Background Technology

[0002] Sheet material is a material primarily composed of resin (or directly polymerized monomers during processing), with additives such as plasticizers, fillers, lubricants, and colorants as auxiliary components, which is formed through flow during processing. Sheet material has many advantages, including good heat resistance, good chemical corrosion resistance, high mechanical strength, reliable electrical insulation properties, and chemical stability, and is increasingly widely used in various fields.

[0003] Cooling rollers are used for calendering and drawing sheets at high temperatures, playing a crucial role in the flatness and surface finish of the resulting sheet products. Existing cooling rollers generally include a roller shaft, end flanges, an inner liner, and a roller body. A cooling water channel is formed between the roller body and the inner liner. The roller shaft has inlets and outlets connecting to the beginning and end of the cooling water channel, respectively. By controlling the flow rate of the cooling water entering the cooling water channel, the cooling rate of the high-temperature sheet in contact with the cooling roller can be controlled.

[0004] However, existing cooling rollers typically use welding technology to fix and seal their components. Therefore, when the roller body is damaged or a different surface treatment of the sheet is required (such as changing a matte surface to a patterned surface), the entire cooling roller needs to be replaced. This necessitates the simultaneous installation of multiple cooling rollers at the same location on the current sheet forming production line, which increases both the maintenance costs of the cooling rollers and the production costs of the formed sheet. Utility Model Content

[0005] To address the aforementioned technical problems, the purpose of this utility model is to provide a cooling roller with a replaceable roller body.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cooling roller for sheet forming, defining a centerline and a fluid path for cooling water flow. The cooling roller includes an axially extending inner core, a roller body sleeved outside the inner core and extending axially, a first end cap fixedly installed on one end of the inner core, a second end cap fixedly installed on the other end of the inner core, and a first shaft head and a second shaft head respectively fixedly connected to the first end cap and the second end cap. The first end cap and the second end cap are detachably connected to the roller body. The maximum outer diameter of the first end cap and the first shaft head is not greater than the minimum inner diameter of the roller body.

[0007] In the above technical solution, preferably, the cooling roller further includes a fixing flange, the first end cap has a first outer circumferential surface that contacts the inner wall of the roller body, the maximum outer diameter of the first end cap is formed on the first outer circumferential surface, and the fixing flange is simultaneously fixedly connected to the first end cap and the roller body by a plurality of fastening bolts. Further preferably, a plurality of elastic sealing rings are disposed between the first outer circumferential surface and the inner wall of the roller body.

[0008] In the above technical solution, preferably, the second end cap has a stepped structure, the stepped structure including a second outer circumferential surface that contacts the inner wall surface of the roller body and a radial surface that contacts the radial end face of the roller body. More preferably, the second end cap is detachably connected to the roller body by a plurality of locking bolts passing through the radial surface.

[0009] In the above technical solution, preferably, a spiral rib extending axially in a cylindrical spiral posture is fixedly provided on the outer wall surface of the inner core. The spiral rib contacts the inner wall surface of the roller body and forms a spiral channel between the inner core and the roller body. The spiral channel constitutes part of the fluid path.

[0010] In the above technical solution, preferably, the inner diameter of the inner wall surface of the roller body continuously expands along the direction from the first end cover to the second end cover and forms a taper in the range of 1:150-1:250.

[0011] In the above technical solution, preferably, the first end cover has an axially extending mounting hole and a plurality of radially extending water inlets, the first shaft head is fixedly installed on the mounting hole and has an axially extending water inlet channel, the water inlet channel is fluidly connected to the plurality of water inlets, and the water inlet channel and the plurality of water inlets all constitute part of the fluid path.

[0012] In the above technical solution, preferably, the inner core, the first end cap, the second end cap, the first shaft head, and the second shaft head are welded together to form an integral assembly.

[0013] Compared to existing technologies, the cooling roller provided by this invention allows for easy replacement of the inner core by disconnecting the detachable connection between the first and second end caps and the roller body when the roller body is damaged or different surface treatments are required on the sheet. This reduces the maintenance cost of the cooling roller and the production cost of the formed sheet. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the cooling roller provided by this utility model along the axial direction.

[0015] Figure 2 for Figure 1 Local magnification Figure 1 ;

[0016] Figure 3 for Figure 1 Local magnification Figure 2 ;

[0017] Figure 4 for Figure 1 The image shows a front view of the cooling roller after the roller body and fixed flange have been removed.

[0018] The image is labeled as follows:

[0019] 100. Cooling roller; Y. Centerline;

[0020] 1. Inner core; 11. Inner tube; 12. Outer tube; 13. Connecting end face; 14. Spiral rib;

[0021] 2. First end cap; 21. First connecting part; 22. Second connecting part; 23. Water inlet hole;

[0022] 3. Second end cap; 31. Third connecting part; 32. Fourth connecting part; 33. Bolt hole;

[0023] 4. First shaft head; 41. Water inlet channel;

[0024] 5. Second shaft head;

[0025] 6. Roller body; 61. Spiral channel;

[0026] 7. Fixed flange. Detailed Implementation

[0027] To explain in detail the technical content, structural features, achieved objectives and effects of this application, the technical solutions in the embodiments of this application will be described below with reference to the accompanying drawings.

[0028] In this application, spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side” (e.g., as in a “sidewall”) are used to describe the relationship between one element and another element as shown in the accompanying drawings. Spatial relative terms are intended to include different orientations of the device in use, operation, and / or manufacture other than those depicted in the drawings. For example, if the device in the drawings is flipped, an element described as “below” or “under” another element or feature would then be positioned “above” said other element or feature. Thus, the exemplary term “below” can include both above and below orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0029] In this application, unless otherwise specified, the term "axial" refers to the direction of the axis of the cooling roller; the term "sleeve" means that at least part of one component is located inside another component; the term "fixed connection" means that two components are relatively fixedly connected directly or indirectly through a third component; and the term "detachable connection" means that two components are fixedly connected directly or indirectly through a third component.

[0030] In this application, unless otherwise specified, the terms "inner wall surface", "outer wall surface" and "radial end face" of the hollow tube body refer to the circumferential wall surface of the hollow tube body on the side closer to the axis, the circumferential wall surface on the side farther from the axis, and the radial end face located at the outermost point of the hollow tube body in the axial direction, respectively.

[0031] This utility model provides a cooling roller 100 for sheet forming, used for calendering and drawing high-temperature sheets. Figure 1-4 As shown, the cooling roller 100 defines an axis Y and a fluid path for cooling water flow (not shown in the figure). The cooling roller 100 also has an axially extending inner core 1, a first end cap 2 and a second end cap 3 fixedly connected to the inner core 1 from both axial sides, a first shaft head 4 and a second shaft head 5 fixedly connected to the first end cap 2 and the second end cap 3, and a roller body 6 defined between the first end cap 2 and the second end cap 3.

[0032] The inner core 1 is the main body of the cooling roller 100, and it provides support for other components, including the roller body 6. In this embodiment, the inner core 1 has a double-layered tubular structure, comprising an axially extending inner tube 11, an outer tube 12 sleeved outside the inner tube 11, and a pair of connecting end faces 13 that fix the inner tube 11 and the outer tube 12 together. The two ends of the outer tube 12 protrude outwards relative to the inner tube 11 to provide a connection structure for the first end cap 2 and the second end cap 3.

[0033] Both the inner tube 11 and the outer tube 12 of the inner core 1 are made of thick-walled seamless steel pipes to enhance the overall rigidity of the cooling roller 100 and reduce the deflection deformation of the roller. A spiral rib 14 is fixedly connected to the outer wall of the outer tube 12. The spiral rib 14 has a cylindrical spiral structure with the axis Y as the generatrix.

[0034] The roller body 6 forms part of the outer surface of the cooling roller 100, which is used to contact the high-temperature sheet and perform surface treatment on the sheet. By configuring different types of roller bodies on the cooling roller 100, the surface of the formed sheet can have corresponding surface features such as mirror finish, frosted finish, and patterned finish.

[0035] The roller body 6 provided in this embodiment has an axially extending hollow tube structure and is sleeved on the outside of the inner core 1. The inner wall of the roller body 6 contacts the spiral ribs 14 on the outer tube 12, thereby forming a spiral channel 61 between the roller body 6 and the outer tube 12 for cooling water to flow along the cylindrical spiral path. The spiral channel 61 constitutes part of the fluid path of the cooling roller 100.

[0036] The roller body 6 has a first end and a second end that are far apart from each other. The first and second end caps are used to realize a detachable connection between the inner core 1 and the first and second ends. Specifically, the first end cap 2 has a first connecting portion 21 that is close to the inner core 1 in the axial direction and a second connecting portion 22 that is far away from the inner core 1. The first connecting portion 21 is a stepped structure, which has a first outer circumferential surface that contacts the inner wall surface of the outer tube 12 and a first radial surface that contacts the radial end face of the outer tube 12.

[0037] Both the first end cap 2 and the first shaft head 4 are configured such that their maximum outer diameter is not greater than the minimum inner diameter of the roller body 6, so that after the first and second ends are disconnected from the detachable connection with the roller body 6, the roller body 6 can be axially pulled away from the inner core 1. In this embodiment, the maximum outer diameter of the first end cap 2 is formed on the second connecting portion 22 and the maximum outer diameter is not greater than the minimum inner diameter of the roller body 6.

[0038] The first end cap 2 is detachably connected to the roller body 6 via a third component. Specifically, the cooling roller 100 also includes a radially extending fixing flange 7, the outer circumferential surface of the second connecting part 22 of the above-mentioned second connecting part 22 contacts the inner wall surface of the roller body 6, and the fixing flange 7 simultaneously fixes the roller body 6 and the second connecting part 22 of the first end cap 2 via a number of axially extending fastening bolts.

[0039] Furthermore, a number of elastic sealing rings (not shown in the figure) are disposed between the outer circumferential surface of the second connecting part 22 and the roller body 6 to prevent cooling water from leaking from the gap between them.

[0040] The second end cap 3 has a third connecting portion 31 near the inner core 1 and a fourth connecting portion 32 away from the inner core 1. Both the third connecting portion 31 and the fourth connecting portion 32 are constructed as stepped structures. Specifically, the third connecting portion 31 has a second outer circumferential surface that contacts the inner wall of the outer tube 12 and a second radial surface that contacts the radial end face of the outer tube 12, and the fourth connecting portion 32 has a third outer circumferential surface that contacts the inner wall of the roller body 6 and a third radial surface that contacts the radial end face of the roller body 6.

[0041] In this embodiment, the second end cover 3 and the roller body 6 are detachably connected by a number of fastening bolts. Specifically, the second end cover 3 has a number of bolt holes 33 that extend axially and penetrate the third radial surface, and the second end cover 3 is detachably connected to the roller body 6 through a number of bolt holes 33.

[0042] In other embodiments, the first and second end caps and the roller body can be detachably connected by various means such as snap-fit, plug-in structure, or radially inserted locking bolts, and this application does not limit this.

[0043] When the cooling roller 100 provided by this utility model is damaged or different surface treatments are required on the sheet, the roller body 6 can be axially pulled away from the inner core 1 and replaced by disconnecting the detachable connection between the first and second end caps and the roller body 6. Therefore, only one cooling roller 100 and several spare roller bodies are needed at the same position on the sheet forming production line, which reduces the maintenance cost of the cooling roller 100 and the production cost of the formed sheet to a certain extent.

[0044] Furthermore, the inner wall of the roller body 6 is configured such that the inner diameter continuously expands along the direction from the first end cover 2 to the second end cover 3 and forms a taper in the range of 1:150-1:250, so as to facilitate the axial disassembly and assembly of the roller body 6 and its engagement with the spiral ribs 14 on the outer tube 12.

[0045] Furthermore, such as Figure 4 As shown, the first shaft head 4, the first end cap 2, the inner core 1, the second end cap 3, and the second shaft head 4 are all fixedly connected by welding and form an integral assembly.

[0046] Back Figure 1-4 Both the first and second end caps have axially penetrating mounting holes (not shown in the figure), and the first and second shaft heads are fixedly mounted on the aforementioned mounting holes. The first end cap 2 has several radially penetrating water inlet holes 23, and the first shaft head 4 has a water inlet channel 41. The water inlet channel 41, the water inlet holes 23, and the spiral channel 61 are sequentially fluidly connected and form part of the fluid path.

[0047] The above embodiments are only for illustrating the technical concept and features of this application, and are intended to enable those skilled in the art to understand the content of this application and implement it accordingly. They should not be construed as limiting the scope of protection of this application. All equivalent changes or modifications made in accordance with the spirit of this application should be included within the scope of protection of this application.

Claims

1. A cooling roller for sheet forming, defining a centerline and a fluid path for cooling water flow, characterized in that, The cooling roller includes an axially extending inner core, a roller body sleeved outside the inner core and extending axially, a first end cap fixedly installed on one end of the inner core, a second end cap fixedly installed on the other end of the inner core, and a first shaft head and a second shaft head respectively fixedly connected to the first end cap and the second end cap. The first end cap and the second end cap are detachably connected to the roller body. The maximum outer diameter of the first end cap and the first shaft head is not greater than the minimum inner diameter of the roller body.

2. The cooling roller according to claim 1, characterized in that, It also includes a fixing flange, wherein the first end cap has a first outer circumferential surface that contacts the inner wall of the roller body, the maximum outer diameter of the first end cap is formed on the first outer circumferential surface, and the fixing flange is simultaneously fixed to the first end cap and the roller body by a plurality of fastening bolts.

3. The cooling roller according to claim 2, characterized in that, A plurality of elastic sealing rings are disposed between the first outer circumferential surface and the inner wall surface of the roller body.

4. The cooling roller according to claim 1 or 2, characterized in that, The second end cap is formed with a stepped structure, the stepped structure including a second outer circumferential surface that contacts the inner wall surface of the roller body and a radial surface that contacts the radial end face of the roller body.

5. The cooling roller according to claim 4, characterized in that, The second end cap is detachably connected to the roller body via a number of locking bolts passing through the radial surface.

6. The cooling roller according to claim 1, characterized in that, The outer wall surface of the inner core is fixedly provided with a spiral rib extending axially in a cylindrical spiral posture. The spiral rib contacts the inner wall surface of the roller body and forms a spiral channel between the inner core and the roller body. The spiral channel constitutes part of the fluid path.

7. The cooling roller according to claim 1 or 6, characterized in that, The inner wall of the roller body continuously expands in diameter along the direction from the first end cover to the second end cover, forming a taper in the range of 1:150-1:

250.

8. The cooling roller according to claim 1, characterized in that, The first end cap has an axially extending mounting hole and a plurality of radially extending water inlets. The first shaft head is fixedly installed on the mounting hole and has an axially extending water inlet channel. The water inlet channel is fluidly connected to the plurality of water inlets. The water inlet channel and the plurality of water inlets are both part of the fluid path.

9. The cooling roller according to claim 1, characterized in that, The inner core, the first end cap, the second end cap, the first shaft head, and the second shaft head are welded together to form an integral assembly.

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