JP2012051695A - Roll attachment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roll attachment device whose body can be easily drawn out and mounted, the roll attachment device being provided to be extended in the barrel longitudinal direction of a roll, such as a doctor blade device.SOLUTION: In the doctor blade device 10A, drawing and mounting can be performed while a roll driving side end part 11a of a body 11 (a cutting edge 12, a blade holder 13, a connection bar 14 and a foreign matter receiver 15) of the doctor blade device is suspended by using a suspension device 20 (a pipe 21 for suspension, a suspension member 22 and a hooking member 23).

Description

  The present invention relates to a roll accessory device (for example, a doctor blade device for removing foreign matter adhering to a roll) that extends in the body length direction of the roll.

  In a continuous steel pickling line for steel strips, the materials (steel strips) before and after are joined with a welding machine to efficiently dispense the materials and perform the pickling operation.

  In the period from 1970 to 1990, the pickling line has been used mainly for the purpose of removing the oxide scale layer on the surface layer of the steel strip after rolling. Since then, against the demand for productivity improvement, a technology has been developed that cracks the oxide scale layer on the surface of the steel strip and promotes the pickling property (descaling property). Skin pass mills and tension levelers are known as facilities for improving the descalability by cracking the oxide scale layer on the steel strip surface layer.

In 2000, it was remarkable in the automobile industry, but the demand for “energy saving: weight reduction of vehicles” increased, and the production ratio of high-tensile materials (TS ≧ 60 kg / mm ² ) increased. As the number of high-tensile materials increases, the pickling line requires not only pickling performance (descalability) but also high shape straightening ability. As a result, the pickling line increases the load of the skin pass mill. The operating conditions changed, such as increasing the amount of tension leveler push.

  As a result of these measures, while pickling performance and shape straightening ability were improved, the amount of peeled oxide scale generated and scattered from the base material (steel strip) before the pickling tank increased, There has been an increasing concern about the occurrence of product surface quality defects such as pressing of foreign matter (peeled oxide scale, etc.) into a steel strip in a roll (for example, a bridle roll) installed in a washing line.

  A doctor blade device that removes foreign matter adhering to the roll surface is effective as a countermeasure against such product surface quality defects caused by the foreign matter indentation.

  In general, as shown in FIGS. 5 and 6, the doctor blade device 10 holds a blade (blade edge) 12 that is in contact with the surface of a roll 2 that conveys the steel strip 1, and the blade edge 12 is sandwiched between slits. A blade holder 13 that supports the blade holder 13, and a foreign material (peeled oxide scale and debris) adhering to the surface of the roll 2 is removed by the blade edge 12. The removed foreign matter is deposited on the upper portion of the blade holder 13. Usually, a foreign matter receiver 15 for receiving foreign matter is installed on the upper portion of the blade holder 13 where the removed foreign matter is accumulated. Between the blade holder 13 and the holder support frame 17, a connecting rod 14 attached to the lower part of the blade holder 13 is passed through a support ring 16 provided on the upper surface of the holder support frame 17, and a bolt (not shown). It is fixed with. The blade edge 12, the blade holder 13, the connecting rod 14, and the foreign object receiver 15 constitute a doctor blade device main body 11.

  And since the blade edge | tip 12 which is contacting the roll 2 is lower in hardness than the roll 2, the periodic replacement | exchange by abrasion is performed.

  So far, Patent Literatures 1 to 3 have been disclosed as prior literature relating to a method for exchanging the cutting edge 12 portion in the doctor blade device 10.

JP 2003-80157 A JP 2008-208496 A JP 2008-127729 A

  Doctor blade devices are used in various industries such as the steel industry and paper industry, but the installation environment varies depending on the industry and application.

  It is said that the maintenance of a general doctor blade device may be performed by replacing only the blade edge part.

  However, in the steel industry, the oxidized scales that become foreign matter are oxidized iron powder, and when the doctor blade device immediately after cleaning is used for about two months, foreign matter (oxidized) is present in the blade holder 13 that fixes the blade edge 12. (Iron powder) often adheres to a fixed state. This is particularly noticeable in a doctor blade device installed on a roll placed in a place with high humidity. And when it comes to the adhering state, the angle of the blade edge cannot be adjusted smoothly, and the foreign matter adhering to the roll cannot be sufficiently removed.

  From this, in the doctor blade apparatus installed in the roll used in the facility for handling the steel strip, the doctor blade apparatus main body 11 (the blade edge 12, the blade holder 13, the connecting rod 14, The entire foreign matter receiver 15) needs to be removed from the holder support frame and cleaned.

  However, conventionally, as shown in FIG. 7, there is no space for workers to enter on the roll drive side with devices such as the motor 3, and the doctor blade device is removed by cleaning the entire doctor blade device body 11 from the holder support frame. Therefore, when the entire doctor blade device body 11 is removed, the entire doctor blade device body 11 is extracted from the non-driving side of the roll. However, the doctor blade device removed from the holder support frame is removed. For example, the roll drive side end portion (motor installation side end portion) 11a of the main body 11 falls, and it takes time for the extraction work, and the burden on the operator is great. Moreover, the operation | work which attaches the doctor blade apparatus main body 11 again is the same.

  In particular, as shown in FIG. 8, in the line provided with the skin pass mill 32 and the tension leveler 33, the skin pass mill 32 is laminated in the vertical direction such as the entry side bridle roll 31 and the tension leveler 33 exit side bridle roll 34. In the case of the doctor blade device 10 installed on the roll, the gap between the rolls 31 and 34 and the doctor blade device 10 is narrow, which is a particularly serious problem.

  Patent Documents 1 to 3 do not describe the operation of extracting or attaching the entire doctor blade device main body 11.

  Incidentally, if only the cutting edge is replaced, the cutting edge is inserted and removed along the slit portion of the blade holder 13 sandwiching the cutting edge, so that the roll driving side end of the cutting edge does not fall.

  What has been described above is also applicable to other roll accessory devices (for example, cooling nozzle header devices) extending in the roll length direction of the roll.

  The present invention has been made in view of the above circumstances, and in a roll accessory device extending in the body length direction of a roll such as a doctor blade device, the main body of the roll accessory device is easily extracted and attached. It is an object of the present invention to provide a roll accessory device.

  In order to solve the above problems, the present invention has the following features.

  [1] In the roll accessory apparatus extended in the body length direction of the roll, the roll accessory apparatus includes suspension means for suspending the roll drive side end part of the roll accessory apparatus body, and the roll drive side end part of the roll accessory apparatus body is provided. A roll accessory apparatus, wherein the roll accessory apparatus main body is extracted or attached from the roll non-drive side in a state of being suspended by the suspension means.

  [2] The suspension means is attached to the suspension pipe extending in the body length direction of the roll and the suspension pipe, and is movable in the extension direction of the suspension pipe. The roll according to [1], wherein the roll is configured by a hanging member and a hook member that is provided at a roll driving side end of the roll accessory device main body and on which the hanging member is hooked. Ancillary equipment.

  [3] The roll accessory device according to [1] or [2], wherein the roll accessory device is a doctor blade device that removes foreign matter attached to a roll surface.

  In the present invention, the main body of the roll accessory can be easily extracted and attached.

It is a front view showing one embodiment of the present invention. It is a side view which shows one Embodiment of this invention. It is a figure which shows the suspension member in one Embodiment of this invention. In one Embodiment of this invention, it is a figure which shows the state which has extracted the main body of the doctor blade apparatus. It is explanatory drawing of a doctor blade apparatus. It is explanatory drawing of a doctor blade apparatus. It is a figure which shows the state which has extracted the main body of the doctor blade apparatus by the conventional method. It is a figure which shows the state by which the doctor blade apparatus was installed in the roll laminated | stacked in the perpendicular direction.

  An embodiment of the present invention will be described with reference to the drawings. Here, a doctor blade device will be described as an example.

  1 and 2 are a front view and a side view showing a doctor blade device 10A according to an embodiment of the present invention.

  As shown in FIGS. 1 and 2, this doctor blade device 10 </ b> A is similar to the doctor blade device 10 shown in FIGS. 5 and 6, and is a blade (blade edge) that contacts the surface of a roll 2 that conveys a steel strip 1. 12, a blade holder 13 that holds the blade edge 12 between the slit portions, a holder support base 17 that supports the blade holder 13 (roll driving side 17 a, roll non-driving side 17 b), and foreign matter that receives the removed foreign matter And a receiver 15. A connecting rod 14 (roll driving side 14a, roll non-driving side 14b) attached to the lower part of the blade holder 13 is provided between the blade holder 13 and the holder support base 17 on the upper surface of the holder support base 17. It passes through the supporting ring 16 (roll driving side 16a, roll non-driving side 16b) and is fixed with bolts (not shown).

  In addition, in the doctor blade device 10A according to this embodiment, the roll drive side end portion 11a of the doctor blade device main body 11 (the blade edge 12, the blade holder 13, the connecting rod 14, and the foreign material receiver 15) is suspended by the suspension device 20. I try to hang it.

  The suspension device 20 includes a suspension pipe 21 extending above the doctor blade device body 11 in the longitudinal direction of the doctor blade device body 11 (the body length direction of the roll 2), and the suspension pipe 21. A suspending member 22 that is attached so as to be slidable in the extending direction and suspends the roll drive side end portion 11a of the doctor blade device main body 11 (specifically, the roll drive side end portion 13a of the blade holder 13) is provided. .

  As shown in the front view of FIG. 3 (a) and the side view of FIG. 3 (b), the upper portion 22a of the suspension member 22 is a semicircular shape for slidably attaching to the suspension pipe 21. The lower portion 22b is a hook portion for suspending the roll drive side end portion 13a of the blade holder 13.

  A circular hooking member 23 that is hooked on the hook portion 22 b of the hanging member 22 is attached to the roll driving side end portion 13 a of the blade holder 13.

  And when extracting the doctor blade apparatus main body 11, as shown in FIG. 4, the connecting rods 14a and 14b are removed from the support rings 16a and 16b, and the suspension device 20 (the suspension pipe 21 and the suspension member 22). The roll driving side end portion 11a of the doctor blade device main body 11 is suspended from the roll non-driving side by the hooking member 23).

  Thus, in this doctor blade apparatus 10A, when the doctor blade apparatus main body 11 is extracted from the roll non-drive side (extraction side) or attached, the roll drive side end portion 11a of the doctor blade apparatus main body 11 is removed. Since it can carry out in the state suspended by the suspending device 20, the roll drive side edge part 11a of the doctor blade apparatus main body 11 removed from the holder support stand 17 does not fall, and extraction of the doctor blade apparatus main body 11 is carried out. Work and installation work can be done easily.

  In this embodiment, the doctor blade device has been described as an example. However, the present invention is directed to another roll accessory device (for example, a cooling nozzle header device) extending in the roll length direction of the roll. Can be applied similarly.

  A first embodiment of the present invention will be described.

  In Example 1, the number of subject doctor blade devices was eight, and in each of the doctor blade devices, the frequency of occurrence of the extraction operation and attachment operation of the doctor blade device body was 2 times / month.

  First, as a conventional example, the doctor blade apparatus main body was extracted and attached by the conventional method shown in FIG. That is, two workers (one worker (worker A) on the non-roll drive side (extraction side) and one worker (worker B) at an intermediate position between the non-roll drive side and the roll drive side (motor side)) are arranged. When the worker A pulls out and attaches the doctor blade apparatus main body, the worker B performs the work by supporting the end of the doctor blade apparatus main body on the roll driving side with a long rod using this principle.

As a result, the working time in the conventional example was as follows.
Extraction work: 20 minutes / unit Installation work: 20 minutes / unit Total time for extraction work 20 minutes x 8 units = 2.6 hours / time Total time for installation work 20 minutes x 8 units = 2.6 hours / time Total work time: 5.2 hours / time, 10.4 hours / month (2 times / month)

  On the other hand, as an example of the present invention, the doctor blade apparatus main body was extracted and attached based on the embodiment of the present invention shown in FIGS. In other words, one worker (one person (worker A) on the non-roll drive side (extraction side)) is placed, and the roll drive side end of the doctor blade device body is suspended by the suspension device. The person A performed the extraction operation and the installation operation of the doctor blade apparatus main body.

As a result, the working time in the example of the present invention was as follows.
Extraction work: 10 minutes / unit Installation work: 10 minutes / unit Total time for extraction work 10 minutes x 8 units = 1.3 hours / time Total time for installation work 10 minutes x 8 units = 1.3 hours / time Total work time: 2.6 hours / time, 5.2 hours / month (2 times / month)

  In this way, in the example of the present invention, the work of extracting and attaching the doctor blade device main body could be performed by one worker and half the time of the conventional example. As a result, in the example of the present invention, the working time was shortened by 2.6 hours / time and 5.2 hours / month as compared with the conventional example.

DESCRIPTION OF SYMBOLS 1 Steel strip 2 Roll 3 Motor 10 Doctor blade apparatus 10A Doctor blade apparatus 11 Doctor blade apparatus main body 11a Roll drive side end of doctor blade apparatus main body 11b Roll non-drive side end of doctor blade apparatus main body 12 Blade (blade edge)
13 Blade holder 13a Roll drive side end of blade holder 13b Roll non-drive side end of blade holder 14 Connecting rod 14a Roll drive side connecting rod 14b Roll non-drive side connection rod 15 Foreign matter receiver 16 Support ring 16a Roll drive side Support ring 16b Roll non-drive side support ring 17 Holder support base 17a Roll drive side holder support base 17b Roll non-drive side holder support base 20 Suspension device 21 Suspension pipe 22 Suspension member 22a Mounting portion 22b Hook Part 23 Hooking member 31 Bridle roll 32 Skin pass mill 33 Tension leveler 34 Bridle roll

Claims (3)

  The roll accessory device extending in the roll length direction of the roll includes suspension means for hanging the roll drive side end of the roll accessory device body, and the roll drive side end of the roll accessory device body is suspended. A roll accessory apparatus, wherein the roll accessory apparatus body is extracted or attached from the roll non-drive side in a state of being suspended by means.   The suspension means includes a suspension pipe that extends in the body length direction of the roll, and a suspension that is attached to the suspension pipe and is movable in the extension direction of the suspension pipe. The roll accessory apparatus according to claim 1, wherein the roll accessory apparatus is configured by a member and a hook member that is provided at an end of the roll accessory apparatus body on a roll driving side and on which the suspension member is hooked.   The roll accessory device according to claim 1 or 2, wherein the roll accessory device is a doctor blade device that removes foreign matter adhering to the roll surface.

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