Ultra-wide three-roller calender

Abstract

The ultra-wide three-roller calender comprises a rack, an upper roller, a middle roller, a lower roller and a pair of dismounting assemblies, the upper roller, the middle roller and the lower roller are rotationally arranged on the rack, the upper roller, the middle roller and the lower roller are sequentially arranged on the rack from top to bottom, and the dismounting assemblies are arranged at the two ends of the middle roller in a left-right opposite mode. Each dismounting assembly comprises a supporting arm extending in the front-back direction, at least one pair of stand columns and a pair of fixed baffles, the supporting arms are located below the shaft heads of the middle rollers, and the upper surfaces of the supporting arms are tangent to the shaft heads of the middle rollers; the at least one pair of stand columns are sequentially arranged in the front-back direction, and each stand column is supported between the lower surface of the supporting arm and the rack in a manner of extending in the up-down direction; the pair of fixed baffles are installed on the inner side and the outer side of the supporting arm respectively and distributed at intervals in the front-back direction, and each fixed baffle is fixedly installed at the upper end of at least one stand column; the supporting strength and stability of the supporting arms are enhanced, and the supporting arms are prevented from shaking left and right when the middle roller rolls on the supporting arms.

Description

Technical Field

[0001] The present application relates to the technical field of plastic sheet production equipment, and in particular to an ultra-wide three-roller calender. Background Art

[0002] At present, traditional large-scale three-roll calenders all have the problem that when the middle roll needs to be replaced after the upper roll of the three rolls is installed, it can be suitable for the production of different sheets. However, the middle roll is easily blocked by the upper roll during the disassembly and assembly process, which is inconvenient for the lifting of the middle roll. At present, some three-roll calenders are equipped with a disassembly arm extending forward from the lower side of the middle roll to allow the middle roll to move to the front side of the upper roll for easy disassembly and assembly of the middle roll. However, in large-scale three-roll calenders, the weight of the three rolls is very high. During the disassembly and assembly of the middle roll, the disassembly arm will shake during the rolling of the middle roll, which is dangerous and easy to damage the roll. Summary of the invention

[0003] In order to solve the above-mentioned technical problems, the purpose of the present application is to provide an ultra-wide three-roller calender with high support strength and high stability.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: an ultra-wide three-roll calender, comprising: a frame, an upper roller, a middle roller and a lower roller rotatably arranged on the frame, and a pair of disassembly and assembly components, wherein the upper roller, the middle roller and the lower roller are arranged on the frame in sequence from top to bottom, and the pair of disassembly and assembly components are arranged at the two ends of the middle roller in a left-right manner, each of the disassembly and assembly components comprises a support arm extending in the front-to-back direction, at least one pair of columns and a pair of fixed baffles, the support arm is located below the shaft head of the middle roller, and the upper surface of the support arm is tangent to the shaft head of the middle roller, the thickness of each of the support arms is 70mm-80mm, and the front end of each of the support arms has a blocking portion protruding upward; the at least one pair of columns is arranged in sequence in the front-to-back direction, and each of the columns extends in the up-down direction and is supported between the lower surface of the support arm and the frame; the pair of fixed baffles are respectively installed on the inner and outer sides of the support arm, and are spaced apart in the front-to-back direction, and each of the fixed baffles is fixedly installed on the upper end of at least one of the columns.

[0005] In the above technical solution, it is further preferred that at least one of the columns is connected to the front end of the support arm and fixedly connected to one of the fixed baffles, and at least one of the columns is connected to the rear end of the support arm and fixedly connected to another of the fixed baffles.

[0006] In the above technical solution, it is further preferred that the frame includes a pair of wall panels and a bottom frame arranged opposite to each other on the left and right, the bottom frame is connected to the bottom of the pair of wall panels, and the lower end of each of the columns is connected to the bottom frame.

[0007] In the above technical solution, it is further preferred that it also includes a moving mechanism, which is arranged at the bottom of the frame. The moving mechanism includes a guide rail extending along the front-to-back direction and a plurality of moving wheels rotatably arranged at the bottom of the frame, and each of the moving wheels cooperates with the guide rail.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] The present application strengthens the supporting strength of the support arm by installing multiple columns at the bottom of the support arm and thickening the thickness of the support arm; and strengthens the stability of the support arm by fixing fixed baffles fixedly connected to the columns on the inner and outer sides of the support arm to prevent the support arm from shaking left and right when the middle roller rolls on the support arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram of the three-roller calender provided in an embodiment of the present application;

[0011] Figure 2 For oneself Figure 1 A schematic diagram of the three-roll calender viewed from the rear side forward;

[0012] Figure 3 for Figure 1 The front view of the three-roll calender in FIG.

[0013] Figure 4 for Figure 1 Side view of the three-roll calender in Figure 1.

[0014] Among them: 100, three-roll calender; 1, frame; 11, wall panel; 12, bottom frame; 2, upper roller; 3, middle roller; 4, lower roller; 5, disassembly and assembly components; 51, support arm; 511, blocking part; 52, column; 53, first fixed baffle; 54, second fixed baffle; 6, moving mechanism; 61, guide rail; 62, moving wheel; 7, driving motor. DETAILED DESCRIPTION

[0015] To describe the technical content, structural features, achieved purpose and effect of the application in detail, the technical solutions in the embodiments of the application will be described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all of 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, various exemplary embodiments may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0016] An embodiment of the present application provides an ultra-wide three-roll calender, which is suitable for calendering ultra-wide sheets of 8 meters / 9 meters.

[0017] like Figure 1 , 2 As shown in Figure 4, the three-roll calender 100 includes: a frame 1, an upper roller 2, a middle roller 3 and a lower roller 4 rotatably arranged on the frame 1, and a pair of disassembly components 5. The upper roller 2, the middle roller 3 and the lower roller 4 are arranged on the frame 1 in sequence from top to bottom, and the pair of disassembly components 5 are arranged at the two ends of the middle roller 3 opposite to each other on the left and right.

[0018] The frame 1 includes a pair of wall panels 11 and a bottom frame 12 which are arranged opposite to each other. The bottom frame 12 is connected to the bottom of the pair of wall panels 11. The upper roller 2, the middle roller 3 and the lower roller 4 all extend in the left-right direction. The upper roller 2, the middle roller 3 and the lower roller 4 are mounted on the pair of wall panels 11 and can rotate around their own axis. A moving mechanism 6 is arranged at the bottom of the frame 1. The moving mechanism 6 includes a guide rail 61 extending in the front-back direction and a plurality of moving wheels 62 which are rotatably arranged at the bottom of the frame 1. Each moving wheel 62 cooperates with the guide rail 61. The bottom frame 12 of the frame 1 is connected to a driving motor 7. The plurality of moving wheels 62 rotate under the drive of the driving motor 7, thereby driving the frame 1 and the rollers on the frame 1 to move in the front-back direction along the guide rail 61.

[0019] Each disassembly assembly 5 includes a support arm 51 extending in the front-to-back direction and at least one pair of columns 52, and the support arm 51 and at least one pair of columns 52 are fixedly mounted on the frame 1. The support arm 51 is located below the shaft head of the middle roller 3, and the upper surface of the support arm 51 is tangent to the shaft head of the middle roller 3, and the middle roller 3 can be moved out of and into the frame 1 along the upper surface of the support arm 51; at least one pair of columns 52 are arranged in sequence along the front-to-back direction, and each column 52 is supported between the lower surface of the support arm 51 and the bottom frame 12 extending in the up-down direction, and the upper end of each column 52 is fixedly connected to the support arm 51, and the lower end is fixedly connected to the bottom frame 12. Since the rollers of the three-roll calender suitable for ultra-wide sheets are very heavy, and the middle roller 3 weighs 20 tons, it is necessary to strengthen the support of the support arm 51 for the middle roller 3. At least one column 52 is connected to the front end of the support arm 51, and at least one column 52 is connected to the rear end of the support arm 51. Multiple columns 52 are supported between the support arm 51 and the bottom frame 12 to increase the support strength of the support arm 51. In the embodiment of the present application, the thickness of each support arm 51 is 70mm-80mm, which further strengthens the support strength of the support arm 51 for the middle roller 3, so that the support arm 51 can withstand the middle roller 3 weighing up to 20 tons.

[0020] Each disassembly assembly 5 includes a pair of fixed baffles, which are respectively installed on the inner side and the outer side of the support arm 51 and are spaced apart in the front-to-back direction. Each fixed baffle is fixedly installed on the upper end of at least one column 52, thereby fixing the support arm 51 in the left-right direction to prevent the support arm 51 from shaking left-right.

[0021] In the embodiment of the present application, a first fixed baffle 53 is provided at the front end of the support arm 51, and a second fixed baffle 54 is provided at the rear end of the support arm 51. The first fixed baffle 53 is fixedly installed on the outside of the support arm 51 and fixedly connected to the upper end of the column 52 at the front end of the support arm 51; the second fixed baffle 54 is fixedly installed on the inside of the support arm 51 and fixedly connected to the upper end of the column 52 at the rear end of the support arm 51. The second fixed baffle 54 presses the rear end of the support arm 51 against the wallboard 11 on the corresponding side, and the support arm 51 is fixedly connected to the wallboard 11 through mechanical fasteners. The first fixed baffle 53 and the second fixed baffle 54 make the support arm 51 more firmly connected to the frame 1, and fix the support arm 51 to multiple columns 52 in the left and right directions to prevent the support arm 51 from shaking when the middle roller 3 is on the support arm 51. The first fixed baffle 53 and the second fixed baffle 54 strengthen the support strength and stability of the support arm 51.

[0022] like Figure 3As shown, the front end portion of each support arm 51 has an upwardly protruding blocking portion 511, and the blocking portion 511 blocks the moving path of the shaft head of the middle roller 3 when the middle roller 3 moves out of the frame 1 from the back to the front, thereby preventing the support arm 51 from falling off due to inertia when the middle roller 3 moves out of the frame 1, thereby improving safety.

[0023] When replacing the middle roller 3, the bearing covers of the bearing seats at both ends of the middle roller 3 are opened. After the middle roller 3 is moved out from the frame 1, it rolls forward along the pair of support arms 51 and is finally blocked by the blocking portion 511. At this time, the middle roller 3 is located in front of the upper roller 2 and is not blocked by the upper roller 2. The three-roll calender 100 is hoisted out through the hoisting assembly, and then the new middle roller 3 is hoisted onto the pair of support arms 51, and then the newly replaced middle roller 3 is rolled into the frame 1 along the pair of support arms 51, and finally the bearing covers are closed.

[0024] The present application strengthens the supporting strength of the support arm by installing multiple columns at the bottom of the support arm and thickening the thickness of the support arm; and strengthens the stability of the support arm by fixing fixed baffles fixedly connected to the columns on the inner and outer sides of the support arm to prevent the support arm from shaking left and right when the middle roller rolls on the support arm.

[0025] The above shows and describes 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 the above embodiments and descriptions are only for explaining the principles of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, and the scope of protection required by the present application is defined by the attached claims, description and their equivalents.

Claims

1. An ultra-wide three-roll calender, characterized in that: include: The cam is a kind of camshaft which is provided with a plurality of movable parts, and the movable parts are connected with the movable part to form a circle, and the movable part is connected with the movable part to form a circle.

2. The ultra-wide three-roll calender according to claim 1, characterized in that: At least one of the columns is connected to the front end of the support arm and fixedly connected to one of the fixed baffles, and at least one of the columns is connected to the rear end of the support arm and fixedly connected to another of the fixed baffles.

3. The ultra-wide three-roll calender according to claim 1, characterized in that: The frame comprises a pair of wall panels and a bottom frame which are arranged opposite to each other. The bottom frame is connected to the bottom of the pair of wall panels, and the lower end of each column is connected to the bottom frame.

4. The ultra-wide three-roll calender according to claim 3, characterized in that: It also includes a moving mechanism, which is arranged at the bottom of the frame. The moving mechanism includes a guide rail extending along the front-back direction and a plurality of moving wheels rotatably arranged at the bottom of the frame, and each of the moving wheels cooperates with the guide rail.

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