Bottom roller removal device of calender

Abstract

A bottom roller removal device for a calender includes a bottom roller support base. The upper surface of the bottom roller support base is a copper plate, which is fixedly connected to the bottom roller support base as a single unit. A bottom roller transition plate can slide along the copper plate. A nut is fixed to the bottom roller transition plate. The bottom roller support base is rotatably connected to a screw via a bearing, and the screw and nut are threadedly engaged. Compared with the prior art, the technical advantage of this invention is that the screw and nut engagement allows the nut and bottom roller transition plate to move outward during bottom roller assembly and disassembly, enabling the bottom roller transition plate to overcome obstacles from other rollers, thus facilitating crane operations.

Description

Technical Field

[0001] This invention belongs to the field of papermaking machinery and equipment, and specifically relates to a device for removing the bottom roll of a calender. Background Technology

[0002] As finishing equipment in papermaking, calenders have two main functions: first, to improve smoothness and gloss; and second, to correct the thickness of the paper web. The more pressing zones the paper web passes through, the better the finishing effect. Calenders are important finishing equipment for producing high-grade paper, consisting of multiple pressing zones; the more pressing zones, the more calender rolls are required. For example, there is patent document with publication number CN102660888A and publication date of September 12, 2012.

[0003] When repairing (or replacing) the bottom roller, other rollers above it can obstruct the process, preventing the bottom roller from being directly lifted into place by an overhead crane. This requires a large number of personnel to assist in the operation, making the process cumbersome and labor-intensive. This is especially true for large calenders. Summary of the Invention

[0004] The technical problem to be solved by this invention is: how to design a bottom roller removal device for a calender to facilitate the bottom roller's coordination with the traveling crane.

[0005] The specific technical solution of the present invention is as follows:

[0006] A bottom roller removal device for a calender includes a bottom roller support base, the upper surface of which is a copper plate. The copper plate is fixedly connected to the bottom roller support base as a whole. A bottom roller transition plate can slide along the copper plate. A nut is fixed to the bottom roller transition plate. The bottom roller support base is rotatably connected to a screw rod through a bearing. The screw rod and the nut are threadedly engaged.

[0007] Two guide grooves are opened on the upper surface of the bottom roller support seat, and two guide keys are fixed on the bottom roller transition plate, with each guide key located in a guide groove.

[0008] The bottom roller support seat has a leg at the bottom of its outer end. The upper end of the leg is threaded with a limiting bolt, and the upper end of the limiting bolt contacts the lower surface of the bottom roller support seat.

[0009] A pressure cap is fitted over the nut, and the pressure cap is fixed to the bottom roller transition plate.

[0010] The upper surface of the bottom roller transition plate is provided with a transverse positioning keyway and a longitudinal positioning keyway. The transverse positioning key and the longitudinal positioning key are fixed on the bottom roller device. The transverse positioning key is located in the transverse positioning keyway, and the longitudinal positioning key is located in the longitudinal positioning keyway.

[0011] Compared with the prior art, the technical effect of the present invention is that the present invention has a screw and nut cooperation. When the bottom roller is disassembled or assembled, the rotation of the screw drives the nut and the bottom roller transition plate to move outward, so that the bottom roller transition plate can pass over the obstacles of other rollers, which can be used in conjunction with the crane operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the present invention.

[0013] Figure 2 for Figure 1 A left-side view diagram.

[0014] Figure 3 This is a schematic diagram of the external relocation of the present invention.

[0015] Figure 4 This is a schematic diagram of the bottom roller transition plate.

[0016] Figure 5 for Figure 4 A top-down view.

[0017] Figure 6 for Figure 4 A left-side view diagram.

[0018] Figure 7 This is a schematic diagram of the bottom roller support.

[0019] Figure 8 for Figure 7 A top-down view.

[0020] Figure 9 for Figure 7 A left-side view diagram. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1-3 A bottom roller removal device for a calender includes a bottom roller support 11, a bottom roller transition plate 1 above the bottom roller support 11, and the bottom roller completes normal calendering operations on the bottom roller transition plate 1.

[0023] The upper surface of the bottom roller support 11 is a copper plate 3. The copper plate 3 is fixedly connected to the bottom roller support 11 as a whole. The bottom roller transition plate 1 can slide along the copper plate 3. The bottom roller transition plate 1 is fixed with a nut 8. The bottom roller support 11 is rotatably connected to a screw 7 through a bearing (not shown in the figure). The screw 7 and the nut 8 are threadedly engaged.

[0024] like Figure 7-9To facilitate guidance, two guide grooves 1101 are provided on the upper surface of the bottom roller support 11. Two guide keys 4 are fixed to the bottom roller transition plate 1, and each guide key 4 is located in a guide groove 1101. This facilitates the sliding of the bottom roller transition plate 1 along the bottom roller support 11.

[0025] like Figure 1-3 The bottom roller support seat 11 is longer than that of ordinary ones. When the bottom roller transition plate 1 moves outward, in order to facilitate the support and stability of the bottom roller support seat 11 (in order to avoid cantilever support), a support leg 6 is provided at the lower part of the outer end of the bottom roller support seat 11. The upper end of the support leg 6 is threaded with a limiting bolt 5, and the upper end of the limiting bolt 5 contacts the lower surface of the outer end of the bottom roller support seat 11.

[0026] like Figure 1-3 A pressure cap 9 is placed over the nut 8 and fixed to the bottom roller transition plate 1. In this way, the nut 8 is installed at the bottom of the bottom roller transition plate 1 and then pressed tightly by the pressure cap 9, which is more secure.

[0027] like Figure 1-3 7-9, The upper surface of the bottom roller transition plate 1 is provided with a transverse positioning keyway 102 and a longitudinal positioning keyway 101. The transverse positioning key 10 and the longitudinal positioning key 2 are fixed on the bottom roller device. The transverse positioning key 10 is located in the transverse positioning keyway 102 and the longitudinal positioning key 2 is located in the longitudinal positioning keyway 101, which can prevent the bottom roller device from moving during operation.

[0028] Its working principle is as follows:

[0029] The inner end of the bottom roller support 11 is connected to the calender, and the bottom roller device works normally in the same way as existing technology.

[0030] If it is necessary to disassemble or assemble the bottom roller, first, adjust the extension distance of the limit bolt 5 so that the upper end of the limit bolt 5 is supported on the lower surface of the outer end of the bottom roller support seat 11.

[0031] Then connect the outer end of the screw 7 to a rotating power component (such as an electric motor or a rotating cylinder). Rotate the screw 7. Since the screw 7 cannot move axially, the nut 8, the bottom roller transition plate 1 and the fixed bottom roller device on it all move outward. When they reach the outer end of the bottom roller support seat 11, the bottom roller device is freed from the interference of other rollers, which facilitates the operation of the crane.

[0032] For other details, please refer to the existing technology.

[0033] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A bottom roller removal device for a calender, comprising a bottom roller support (11), characterized in that: The upper surface of the bottom roller support seat (11) is a copper plate (3). The copper plate (3) is fixedly connected to the bottom roller support seat (11) as a whole. The bottom roller transition plate (1) can slide along the copper plate (3). The bottom roller transition plate (1) is fixed with a nut (8). The bottom roller support seat (11) is rotatably connected to a screw (7) through a bearing. The screw (7) and the nut (8) are threadedly engaged. Nut (8) is installed at the bottom of bottom roller transition plate (1); When the outer end of the screw (7) is connected to the rotating power component, the screw (7) is rotated. Because the screw (7) cannot move axially, the nut (8), the bottom roller transition plate (1) and the fixed bottom roller device on it all move outward. When they reach the outer end of the bottom roller support seat (11), the bottom roller device is freed from the interference of other rollers.

2. The bottom roller removal device of the calender as described in claim 1, characterized in that: Two guide grooves (1101) are opened on the upper surface of the bottom roller support (11), and two guide keys (4) are fixed on the bottom roller transition plate (1). Each guide key (4) is located in a guide groove (1101).

3. The bottom roller removal device of the calender as described in claim 2, characterized in that: A support leg (6) is provided below the outer end of the bottom roller support seat (11). The upper end of the support leg (6) is threaded with a limiting bolt (5). The upper end of the limiting bolt (5) contacts the lower surface of the outer end of the bottom roller support seat (11).

4. The bottom roller removal device of the calender as described in claim 3, characterized in that: A pressure cap (9) is fitted over the nut (8), and the pressure cap (9) is fixed on the bottom roller transition plate (1).

5. The bottom roller removal device of the calender as described in claim 4, characterized in that: The upper surface of the bottom roller transition plate (1) is provided with a transverse positioning keyway (102) and a longitudinal positioning keyway (101). The bottom roller device is fixed with a transverse positioning key (10) and a longitudinal positioning key (2). The transverse positioning key (10) is located in the transverse positioning keyway (102), and the longitudinal positioning key (2) is located in the longitudinal positioning keyway (101).

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