Three-roll calender

Abstract

This application discloses a three-roll calender, comprising: a frame and a roller mechanism and a pressing device mounted on the frame. The roller mechanism includes an upper roller, a middle roller, and a lower roller, which are rotatably mounted on the frame from top to bottom and are parallel to each other. The pressing device is arranged close to the upper roller and includes a pressure roller parallel to the upper roller and a pair of adjusting cylinders mounted on the frame. The pair of adjusting cylinders are respectively connected to the two ends of the pressure roller and are configured to synchronously drive the pressure roller to swing around a center line extending in the left-right direction to adjust the distance between the pressure roller and the upper roller. The pressing device is installed at the upper roller of this application. The pressing device has a simple structure and is easy to install. By adjusting the cylinders, the pressure roller can be driven to swing closer to and further away from the upper roller at an adjustable angle. It can be used to produce sheets of different thicknesses, improve pressing efficiency, effectively reduce air pockets in the sheet, and improve pressing efficiency and sheet quality.

Description

Technical Field

[0001] This application relates to the field of plastic sheet production equipment technology, and in particular to a three-roll calender. Background Technology

[0002] Currently, in the processing of sheet forming machines, the swing arm pressure rollers are usually fixed in a simple way, which will result in problems such as small contact area, incomplete air exhaust, uneven sheet thickness, and inconvenient adjustment, and cannot adapt to the forming of sheets of different thicknesses. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, the purpose of this application is to provide a three-roll calender.

[0004] To achieve the above objectives, this application adopts the following technical solution: a three-roll calender, comprising:

[0005] frame;

[0006] The roller mechanism includes an upper roller, a middle roller, and a lower roller that are rotatably mounted sequentially from top to bottom on the frame, wherein the upper roller, middle roller, and lower roller are parallel to each other; and

[0007] The tableting device is arranged close to the upper roller. The tableting device includes a pressure roller parallel to the upper roller and a pair of adjusting cylinders mounted on the frame. The pair of adjusting cylinders are respectively connected to the two ends of the pressure roller, and the pair of adjusting cylinders are configured to synchronously drive the pressure roller to swing around a center line extending in the left-right direction to adjust the distance between the pressure roller and the upper roller.

[0008] In the above technical solution, a further preferred embodiment is that the frame includes a pair of wall panels arranged opposite each other on the left and right and a plurality of cross braces connected between the pair of wall panels, and the upper roller, middle roller and lower roller are respectively mounted on the pair of wall panels rotatably around their own axis.

[0009] In the above technical solution, it is further preferred that the pair of adjusting cylinders are respectively mounted on the pair of wall plates.

[0010] In the above technical solution, it is further preferred that each of the adjusting cylinders is connected to the end of the pressure roller by a connecting swing arm, the connecting swing arm is rotatably connected to the wall plate on the corresponding side, and the connecting swing arm is configured to be able to rotate about the center line relative to the frame.

[0011] In the above technical solution, it is further preferred that each of the connecting swing arms includes a first end hinged to the adjusting cylinder and a second end connected to the pressure roller drive, wherein the second end is equipped with a bearing that cooperates with the pressure roller.

[0012] In the above technical solution, it is further preferred that the pressure roller is a mirror roller.

[0013] Compared with the prior art, this application achieves the following beneficial effects:

[0014] The upper roller of this application is equipped with a pressing device. The pressing device has a simple structure and is easy to install. By adjusting the cylinder, the pressure roller can be adjusted to move closer to or further away from the upper roller. It can be used to produce sheets of different thicknesses, improve pressing efficiency, effectively reduce air pockets in the sheet, and improve pressing efficiency and sheet quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a three-roll calender provided in an embodiment of this application;

[0016] Figure 2 for Figure 1 A three-dimensional structural diagram of the tableting device in the diagram;

[0017] Figure 3 for Figure 2 Front view of the tableting device in the middle;

[0018] Figure 4 for Figure 2 Side view of the tableting device.

[0019] Among them: 100, three-roll calender; 10, frame; 1, wall panel; 2, moving wheel; 20, roller mechanism; 3, upper roller; 4, middle roller; 5, lower roller; 30, pressing device; 6, pressure roller; 7, adjusting cylinder; 8, connecting swing arm; 81, first end; 82, second end; 9, bearing; 11, fixed seat. Detailed Implementation

[0020] To illustrate the technical content, structural features, achieved objectives, and effects of the application in detail, the technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. In the following description, for illustrative purposes, numerous specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in one or more equivalent arrangements. Furthermore, the various exemplary embodiments may differ, but are not necessarily exclusive. For example, the specific shape, structure, and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

[0021] This application provides a three-roll calender, such as Figure 1As shown, the three-roll calender 100 includes: a frame 10 and a roller mechanism 20 and a pressing device 30 mounted on the frame 10.

[0022] The frame 10 includes a pair of wall panels 1 arranged opposite each other on the left and right and a number of cross braces (not shown in the figure) connected between the pair of wall panels 1. Each cross brace extends in the left and right direction and the number of cross braces are connected between the pair of wall panels 1 to enhance the support strength of the frame 10.

[0023] Several casters 2 are installed at the bottom of a pair of wall panels 1. The frame 10 can move as a whole in the front and back direction through the casters 2 to facilitate the maintenance and cleaning of the mold.

[0024] The roller mechanism 20 includes an upper roller 3, a middle roller 4, and a lower roller 5, which are rotatably mounted on the frame 10 from top to bottom. The upper roller 3, middle roller 4, and lower roller 5 are parallel to each other and are rotatably mounted on a pair of wall plates 1 around their own axes. During the production process, the sheet material is generally output from the upper roller 3 of the three-roll calender 100.

[0025] like Figure 1-4 As shown, the pressing device 30 is arranged close to the upper roller 3. The pressing device 30 includes a pressure roller 6 parallel to the upper roller 3 and a pair of adjusting cylinders 7 mounted on the frame 10. The pressure roller 6 is a mirror roller. The pair of adjusting cylinders 7 are respectively connected to the two ends of the pressure roller 6. The pair of adjusting cylinders 7 can synchronously drive the pressure roller 6 to swing back and forth around a center line X1 extending in the left-right direction. During the swinging process around the center line X1, the pressure roller 6 moves closer to and away from the upper roller 3. The adjusting cylinders 7 adjust the distance between the pressure roller 6 and the upper roller 3 by adjusting the swing angle of the pressure roller 6, so that the three-roll calender 100 can be used to produce sheets of different thicknesses.

[0026] A pair of adjusting cylinders 7 synchronously drive the pressure roller 6 to swing, ensuring that the pressure roller 6 is always parallel to the upper roller 3 during the swing process. This further ensures that the distance between the pressure roller 6 and the upper roller 3 is equal in the left and right directions, thereby making the sheet material pressed by the pressure roller 6 and the upper roller 3 uniform in thickness.

[0027] Each adjusting cylinder 7 is connected to the end of the pressure roller 6 by a connecting swing arm 8. The connecting swing arm 8 is rotatably connected to the wall plate 1 on the corresponding side. The connecting swing arm 8 is configured to swing about the center line X1 relative to the frame 10. A fixed seat 11 is connected between the connecting swing arm 8 and the wall plate 1. The connecting swing arm 8 can swing about the center line X1 relative to the frame 10 through the fixed seat 11.

[0028] Each connecting swing arm 8 includes a first end 81 hinged to the adjusting cylinder 7 and a second end 82 drivenly connected to the pressure roller 6. The second end 82 is equipped with a bearing 9 that cooperates with the pressure roller 6. The two ends of the pressure roller 6 are respectively inserted into the bearings 9 on the connecting swing arms 8 on both sides. The pressure roller 6 is mounted on the frame 10 by swinging around the center line through the cooperation of the adjusting cylinder 7 and the connecting swing arms 8. The pressure roller 6 can rotate relative to the frame 10 around its own axis through the bearings 9 mounted on the connecting swing arms 8 to adapt to the high-speed production line.

[0029] The stroke of the cylinder 7 corresponds to the rotation angle of the connecting swing arm 8. The cylinder 7 adjusts the swing angle of the connecting swing arm 8 by changing the extension and retraction strokes. When the swing angle of the connecting swing arm 8 changes, the distance between the roller surface of the pressure roller 6 mounted on the connecting swing arm 8 and the roller surface of the upper roller 3 changes.

[0030] During sheet production, as the sheet passes over the upper roller 3, a pair of adjusting cylinders 7 drive a pair of connecting swing arms 8 to swing, causing the pressure roller 6 to approach the upper roller 3 to press the sheet firmly onto the upper roller 3, thus avoiding air pockets and edge curling, and ensuring the surface smoothness of the sheet.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made without departing from the spirit and scope of this application. The scope of protection claimed by this application is defined by the appended claims, specification, and their equivalents.

Claims

1. A three-roll calender, characterized by, include: frame; The roller mechanism includes an upper roller, a middle roller, and a lower roller that are rotatably mounted on the frame from top to bottom, and the upper roller, the middle roller, and the lower roller are parallel to each other; as well as The tableting device is arranged close to the upper roller. The tableting device includes a pressure roller parallel to the upper roller and a pair of adjusting cylinders mounted on the frame. The pair of adjusting cylinders are respectively connected to the two ends of the pressure roller, and the pair of adjusting cylinders are configured to synchronously drive the pressure roller to swing around a center line extending in the left-right direction to adjust the distance between the pressure roller and the upper roller.

2. The three-roll calender according to claim 1, characterized in that The frame includes a pair of wall panels arranged opposite each other and several cross braces connected between the pair of wall panels. The upper roller, middle roller and lower roller are respectively mounted on the pair of wall panels in a rotatable manner around their own axis.

3. The three-roll calender according to claim 2, wherein The pair of regulating cylinders are respectively mounted on the pair of wall panels.

4. The three-roll calender according to claim 3, characterized in that Each of the aforementioned adjusting cylinders is connected to the end of the pressure roller by a connecting swing arm, which is rotatably connected to the wall panel on the corresponding side. The connecting swing arm is configured to rotate relative to the frame about the center line.

5. The three-roll calender according to claim 4, wherein Each of the aforementioned connecting arms includes a first end hinged to the aforementioned adjusting cylinder and a second end connected to the aforementioned pressure roller drive, wherein the second end is equipped with a bearing that cooperates with the aforementioned pressure roller.

6. The three-roll calender according to claim 1, wherein The pressure roller is a mirror roller.

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