Roller fixing device

Abstract

The utility model relates to a fixed roller device, which comprises a bearing seat, the top wall surface of the bearing seat is fixed with a mounting frame, two opposite side wall surfaces of the bearing seat and the mounting frame are respectively matched and mounted through a plurality of pressing mechanisms, the bearing seat is pre-tightened through the pressing mechanisms, and a roller is rotationally mounted on the bearing seat. A gap between the rack and the bearing seat can be filled, so that the bearing seat is prevented from shaking in the radial direction of the roller, and the working stability of the fixed roller device is improved; and meanwhile, the pressing mechanism and the rack as well as the pressing mechanism and the bearing seat are convenient to disassemble and assemble, and later maintenance is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of calenders, in particular to a fixed roller device. Background Art

[0002] The calender is used to squeeze the calendered material between two or more parallel rollers. The material is subjected to extrusion and extension when passing through the rotating rollers, so that it becomes a continuous sheet product of specified size. The structure of the calender includes a driving device, a fixed roller device, a movable roller device, and a transmission device; among which, the fixed roller device is used to improve the movement stability of the movable roller device, the transmission device is used to transmit the calendered material so that the calendered material passes between the two movable roller devices, and the driving device is used to drive the rollers in the movable roller device to rotate, so as to calender the calendered material into shape.

[0003] In the prior art, the fixed roller device usually uses a top screw to press and fix the bearing seat on the mounting frame. However, this fixing method will cause the top screw to bear a large pressing force, thereby shortening the service life of the top screw and reducing the working stability of the fixed roller device; at the same time, since the installation direction of the top screw is parallel to the radial direction of the fixed roller, it increases the difficulty of its installation, operation and adjustment. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a fixed roller device, which can fill the gap between the frame and the bearing seat by arranging a clamping mechanism, thereby preventing the bearing seat from shaking along the radial direction of the roller and improving the working stability of the fixed roller device; at the same time, the clamping mechanism and the frame, and the clamping mechanism and the bearing seat are easy to disassemble and assemble, which is convenient for later maintenance.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A fixed roller device includes a bearing seat, the top wall of the bearing seat is fixed to a mounting frame, the opposite side walls of the bearing seat and the mounting frame are respectively mounted by a plurality of clamping mechanisms, the bearing seat is pre-tightened by the clamping mechanisms, and a roller is rotatably mounted on the bearing seat.

[0007] As a further improvement of the above technical solution:

[0008] A single clamping mechanism comprises two clamping wedge blocks, one end face of the single clamping wedge block is provided with an inclined surface, and the other end face opposite thereto is provided with a flat surface, and a plurality of countersunk holes are provided on the end face of the inclined surface.

[0009] A single clamping mechanism is equipped with a clamping assembly, which presses against the side wall of one of the clamping wedge blocks, thereby applying a first thrust along the axial direction of the roller to the corresponding clamping mechanism;

[0010] The clamping mechanism converts the first thrust into a second thrust along the radial direction of the roller through the inclined surface, so that the bearing seat is clamped by the second thrust.

[0011] A single jacking assembly includes at least one mounting plate and a plurality of jacking screws;

[0012] The mounting plates are fixed on the mounting frame, and one of the mounting plates is pressed against the side wall surface of the corresponding pressing wedge block by means of a jack screw.

[0013] The inclination angle of the inclined surface is 1°-5°.

[0014] For a single clamping mechanism, the plane of one clamping wedge block is arranged close to the wall surface of the mounting frame, and the plane of the other clamping wedge block is arranged close to the side wall surface of the bearing seat.

[0015] When the plane of the clamping wedge block is arranged close to the wall surface of the mounting frame, the clamping wedge block is loosely connected to the mounting frame by a plurality of bolts.

[0016] When the plane of the clamping wedge block is arranged close to the side wall surface of the bearing seat, the clamping wedge block is fastened to the bearing seat by a plurality of bolts.

[0017] For the single pressing mechanism, the inclined surfaces of the two pressing wedge blocks are arranged closely to each other.

[0018] The inclined surface is provided with a groove for introducing lubricating oil.

[0019] The beneficial effects of the utility model are as follows:

[0020] The utility model has a compact and reasonable structure and is easy to operate. By arranging a clamping mechanism, the bearing seat can be effectively pre-tightened to prevent the bearing seat from shaking along the radial direction of the roller, thereby improving the rotation stability of the roller. At the same time, it is easy to install, operate and adjust, with high space utilization and low later maintenance cost.

[0021] The utility model also has the following advantages:

[0022] (1) In the present invention, by providing a clamping mechanism, a mounting plate and a top screw, the working stability of the fixed roller device can be further improved; in addition, the installation direction of the top screw is along the axial direction of the roller, which is convenient for disassembly and assembly.

[0023] (2) In the present invention, by providing an inclined surface with an inclination angle of 1°-5°, the load on the top screw can be greatly reduced, thereby extending the service life of the top screw and reducing the maintenance frequency.

[0024] (3) In the present invention, the clamping wedge block is loosely connected to the mounting frame by a first bolt. The first bolt is not tightened here, so that a certain degree of freedom can be given to the clamping wedge block, which is convenient for adjustment when another clamping wedge block is installed later.

[0025] (4) In the present invention, a groove is provided to allow lubricating oil to flow between the two pressing wedge blocks, thereby further reducing the difficulty of installation.

[0026] (5) In the present invention, a support rod is provided to connect the two bearing seat bodies, thereby improving the structural stability of the bearing seat and preventing the bearing seat from shaking along the axial direction of the roller.

[0027] (6) In the present invention, a limiting flange is provided to limit the axial displacement of the roller, thereby limiting the axial movement of the roller, thereby further improving the rotational stability of the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the utility model (the mounting plate is omitted).

[0029] Figure 2 for Figure 1 Side view of.

[0030] Figure 3 for Figure 2 Top view of the .

[0031] Figure 4 It is a structural schematic diagram of a single pressing wedge block in the utility model.

[0032] Figure 5 It is a front view of a single pressing wedge block in the utility model.

[0033] Figure 6 It is a rear view of a single pressing wedge block in the utility model.

[0034] Figure 7 It is a side view of a single pressing wedge block in the utility model.

[0035] Figure 8 It is a schematic diagram of the utility model in working state.

[0036] Among them: 1. Mounting frame; 2. Bearing seat; 3. Roller; 4. Support rod; 5. Clamping mechanism; 6. Bearing assembly; 7. Limit flange; 8. Active roller assembly; 9. Top screw; 10. Mounting plate;

[0037] 101, column; 102, square hole;

[0038] 501, pressing wedge block; 502, inclined surface; 503, plane; 504, countersunk hole; 505, groove. DETAILED DESCRIPTION

[0039] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0040] The structure and functions of the utility model are as follows:

[0041] like Figure 1-Figure 7 As shown, a fixed roller device includes a bearing seat 2, the top wall of the bearing seat 2 is fixed to the mounting frame 1, the opposite side walls of the bearing seat 2 and the mounting frame 1 are respectively installed by a plurality of clamping mechanisms 5, the bearing seat 2 is pre-tightened by the clamping mechanism 5, and a roller 3 is rotatably installed on the bearing seat 2.

[0042] The utility model provides a fixed roller device, comprising a mounting frame 1, a bearing seat 2, a roller 3, and a pressing mechanism 5; wherein:

[0043] The mounting frame 1 is an integral support frame for mounting other structural components. The mounting frame 1 includes two columns 101 arranged at intervals. A square hole 102 is provided on the end surface of a single column 101.

[0044] The bearing seat 2 is used to support the roller 3 to rotate stably. The bearing seat 2 is installed in cooperation with the roller 3 through the bearing assembly 6, and the axial displacement of the roller 3 is limited by the limit flange 7. In the utility model, the bearing seat 2 includes two bearing seat bodies arranged at intervals, and the two bearing seat bodies are respectively installed in the two square holes 102;

[0045] The bearing seat 2 is mounted on the mounting frame 1 and pre-tightened by a plurality of clamping mechanisms 5; specifically, the mounting structure of the bearing seat 2 and the mounting frame 1 is:

[0046] The two bearing seat bodies correspond to the two square holes 102 one by one, and the top wall surface of a single bearing seat body fits with the inner wall surface of the corresponding square hole 102 and is fixed by a threaded connector, thereby fixing the bearing seat 2 on the mounting frame 1;

[0047] One side wall surface of a single bearing seat body is connected to the inner wall surface of one side of the corresponding square hole 102 through a clamping mechanism 5. At the same time, the other side wall surface on the bearing seat body opposite to the side wall surface is connected to the inner wall surface of the other side of the corresponding square hole 102 through another clamping mechanism 5, thereby fastening the bearing seat 2 to the mounting frame 1. In the utility model, a total of four clamping mechanisms 5 are arranged to pre-tighten the bearing seat 2, which can effectively prevent the bearing seat 2 from shaking along the radial direction of the roller 3 and improve the stability of the roller 3 during rotation.

[0048] In addition, in order to improve the structural stability of the bearing seat 2, the two bearing seat bodies are connected by several support rods 4, which can prevent the bearing seat 2 from shaking along the axial direction of the roller 3. By setting a limit flange 7, the axial movement of the roller 3 is restricted, thereby further improving the rotational stability of the roller 3.

[0049] like Figure 3-Figure 7 As shown, a single clamping mechanism 5 includes two clamping wedge blocks 501, one end surface of the single clamping wedge block 501 is provided with an inclined surface 502, and the other end surface opposite thereto is provided with a flat surface 503, and a plurality of countersunk holes 504 are provided on the end surface of the inclined surface 502; the countersunk holes 504 are used to install the first bolt or the second bolt; Figure 3 As shown, for a single clamping mechanism 5, the inclined surfaces 502 of the two clamping wedge blocks 501 are arranged close to each other; by providing a countersunk hole 504, it can be ensured that the two inclined surfaces 502 are completely in contact with each other;

[0050] When a single clamping mechanism 5 connects the corresponding side wall of the bearing seat body and the inner wall of the square hole 102, the plane 503 of a clamping wedge block 501 in the clamping mechanism 5 is arranged close to the inner wall of the corresponding square hole 102, and the clamping wedge block 501 is loosely connected to the mounting frame 1 by a first bolt. The first bolt here is not tightened, which can give the clamping wedge block 501 a certain degree of freedom, so as to facilitate adjustment when another clamping wedge block 501 is installed later; the plane 503 of another clamping wedge block 501 in the clamping mechanism 5 is arranged close to the side wall of the corresponding bearing seat body, and the clamping wedge block 501 is fastened to the bearing seat 2 by a second bolt.

[0051] like Figure 3 As shown, a single clamping mechanism 5 is equipped with a clamping assembly, which presses against the side wall of one of the clamping wedge blocks 501, thereby applying a first thrust along the axial direction of the roller 3 to the corresponding clamping mechanism 5; the clamping mechanism 5 converts the first thrust into a second thrust along the radial direction of the roller 3 through the inclined surface 502, thereby pressing the bearing seat 2 through the second thrust. The clamping assembly provides thrust, so that the clamping mechanisms 5 on both sides of the single bearing seat body simultaneously provide opposing forces to press the corresponding bearing seat body, so as to further improve the rotation stability of the roller 3.

[0052] like Figure 3 As shown, a single tightening assembly includes at least one mounting plate 10 and several jack screws 9; the mounting plate 10 is fixed on the mounting frame 1, and one mounting plate 10 is tightened against the side wall surface of the corresponding pressing wedge block 501 through the jack screw 9. In the present invention, two mounting plates 10 can be provided, wherein the jack screw 9 is installed between one mounting plate 10 and the corresponding pressing wedge block 501, and at the same time, the other mounting plate 10 and the pressing mechanism 5 are kept away from each other;

[0053] The installation direction of the top screw 9 is along the axial direction of the roller 3, which is convenient for disassembly and assembly, and can provide the corresponding clamping mechanism 5 with a first thrust along the axial direction of the roller 3, so that a relative movement trend is generated between the two clamping wedge blocks 501 in the clamping mechanism 5. Under the action of the inclined surface 502, the first thrust is converted into a second thrust along the radial direction of the roller 3, so that the clamping mechanism 5 generates a thrust on the bearing seat 2, thereby pre-tightening the bearing seat 2.

[0054] A groove 505 for introducing lubricating oil is provided on the inclined surface 502. In the utility model, the groove 505 is X-shaped. The groove 505 is provided to introduce lubricating oil between the two pressing wedge blocks 501, which facilitates installation.

[0055] In order to reasonably set the inclination angle of the inclined surface 502, under the condition of considering the friction force, the force analysis is performed on the pressing wedge block 501 (i.e. the pressing wedge block 501 pressed by the top screw 9) which is in contact with the plane 504 and the mounting frame 1, and the following formula can be obtained:

[0056]

[0057] In the above formula, F represents the thrust output by the top screw 9;

[0058] a represents the angle between the inclined surface 502 and the vertical line (i.e., the angle between the inclined surface 502 and the plane 503);

[0059] b represents the friction angle;

[0060] F 0 Indicates the required preload force;

[0061] F 2 Indicates the supporting force of the inclined surface 502.

[0062] It can be seen from the above formula that for the same preload force F 0 The smaller the angle a is, the smaller the thrust F that the top screw 9 needs to provide. Therefore, in the utility model, the inclination angle of the inclined surface 502 is set to 1°-5°, preferably 1°, which can greatly reduce the load on the top screw 9, thereby extending the service life of the top screw 9 and reducing the maintenance frequency.

[0063] like Figure 8 As shown, the utility model is used in a calender, and cooperates with a movable roller assembly 8 to calender the calendered material into a shape; specifically, the movable roller assembly 8 can be installed on the mounting frame 1, and an additional support frame can be provided to support the movable roller assembly 8;

[0064] The movable roller assembly 8 can move in the vertical direction, thereby ensuring that there is no gap between the movable roller assembly 8 and the roller 3, so that the movable roller assembly 8 can subsequently drive the corresponding roller 3 to rotate.

[0065] The working process of the utility model is as follows:

[0066] Two groups of movable roller assemblies 8 and fixed roller devices are arranged symmetrically. In each group of movable roller assemblies 8 and fixed roller devices, the movable roller assembly 8 is adjusted to the required position, and the working rollers in the movable roller assembly 8 are driven to rotate by an external driving device, thereby driving the roller 3 to rotate through the movable roller assembly 8.

[0067] During the rotation of the two sets of movable roller assemblies 8, the calendered material is calendered into shape;

[0068] The clamping mechanism 5 ensures the rotation stability of the corresponding roller 3, and further ensures the stability of the corresponding movable roller assembly 8, thereby improving the calendering quality.

[0069] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A fixed roller device, characterized in that: The invention comprises a bearing seat (2), the top wall of the bearing seat (2) is fixed to a mounting frame (1), the opposite side walls of the bearing seat (2) and the mounting frame (1) are respectively mounted in cooperation via a plurality of clamping mechanisms (5), the bearing seat (2) is pre-tightened via the clamping mechanisms (5), and a roller (3) is rotatably mounted on the bearing seat (2).

2. A fixed roller device according to claim 1, characterized in that: The single clamping mechanism (5) comprises two clamping wedge blocks (501), one end surface of the single clamping wedge block (501) is provided with an inclined surface (502), and the other end surface opposite thereto is provided with a flat surface (503), and a plurality of countersunk holes (504) are provided on the end surface of the inclined surface (502).

3. A fixed roller device according to claim 2, characterized in that: A single clamping mechanism (5) is equipped with a clamping assembly, the clamping assembly presses against the side wall surface of one of the clamping wedge blocks (501), thereby applying a first thrust along the axial direction of the roller (3) to the corresponding clamping mechanism (5); The clamping mechanism (5) converts the first thrust into a second thrust along the radial direction of the roller (3) via the inclined surface (502), thereby clamping the bearing seat (2) via the second thrust.

4. A fixed roller device according to claim 3, characterized in that: A single tightening assembly comprises at least one mounting plate (10) and a plurality of jack screws (9); The mounting plate (10) is fixed on the mounting frame (1), and one of the mounting plates (10) is pressed against the side wall surface of the corresponding pressing wedge block (501) by means of a pressing screw (9).

5. A fixed roller device according to claim 2, characterized in that: The inclination angle of the inclined surface (502) is 1°-5°.

6. A fixed roller device according to claim 2, characterized in that: For a single clamping mechanism (5), a plane (503) of one clamping wedge block (501) is arranged close to the wall surface of the mounting frame (1), and a plane (503) of another clamping wedge block (501) is arranged close to the side wall surface of the bearing seat (2).

7. A fixed roller device according to claim 6, characterized in that: When the plane (503) of the clamping wedge block (501) is arranged close to the wall surface of the mounting frame (1), the clamping wedge block (501) is loosely connected to the mounting frame (1) by means of a plurality of bolts.

8. A fixed roller device according to claim 6, characterized in that: When the plane (503) of the clamping wedge block (501) is arranged in close contact with the side wall surface of the bearing seat (2), the clamping wedge block (501) is fastened to the bearing seat (2) by a plurality of bolts.

9. A fixed roller device according to claim 2, characterized in that: For the single pressing mechanism (5), the inclined surfaces (502) of the two pressing wedge blocks (501) are arranged closely to each other.

10. A fixed roller device according to claim 2, characterized in that: The inclined surface (502) is provided with a groove (505) for introducing lubricating oil.

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