KR200441766Y1 - Release device for slitter arbor shaft - Google Patents

Abstract

The invention devises a rigid coupling state between the taper portion of the arbor shaft and the tapered surface of the taper sleeve by applying hydraulic pressure to the piston rod installed at the rear to replace the arbor shaft knife or adjust the spacing of the slitter arbor shaft. A release device, wherein a slitter knife assembly is installed between a drive side choke device and an operating side choke device, and the taper portion of the shaft has a tapered portion fixed to the taper portion of the arbor shaft and the base stand of the operating side choke device. In the slitter structure in which the tapered sleeve and the arbor shaft fixing end are fixed by the clamp bolt in a close state, the arbor shaft 5 is supported so that the piston rod 20 is supported by the stem rod 50 and the inner choke cover 40. Of the base stand 10 of the actuating side choke device 2 by the choke body 30. When the piston rod 20 pushes the rear end of the taper sleeve 13 by hydraulic pressure, releases the binding between the taper sleeve 13 and the taper portion 7 of the arbor shaft 5 and drains the hydraulic pressure. The piston rod 20 is configured to return to its original position by the return spring 60. The stem rod 50 and the inner choke cover 40 are fixed to each other by screws, and the inner choke cover 40 and the choke body 30 are fixed to each other. The bolt is characterized in that it is fixed.

Slitter, Arbor Shaft, Piston Rod, Inner Choke Cover, Choke Body

Description

Release device for slitter arbor shaft {A taking apart device of arbor shaft in slitter machine}

The present invention relates to a release device for a slitter arbor shaft, and more specifically, to release the firm coupling state between the tapered portion of the arbor shaft and the tapered surface of the tapered sleeve by applying pressure to the piston rod installed at the rear to release the knife of the arbor shaft. It is related with the release device of the slitter arbor shaft which allows to replace or adjust the spacing.

In general, the slitter machine (SLITTER MACHINE) is widely used in the steel industry as a secondary processing equipment that continuously cuts the material wound on a roll to a certain width after completion of the primary processing.

In the manufacturing process of cold rolled products of general steel mills, the specifications of the facilities are determined in consideration of construction cost and efficiency, such as hot rolling mill, cold rolling mill, continuous annealing plant, and continuous plating plant, so that the width of the product is limited.

Therefore, in such a case, a slitter device for cutting the width of the steel sheet should be used for the desired demand of a small steel sheet.

Conventionally, when assembling the slitter knife, in order to assemble the slitter upper knife and the slitter lower knife, the slitter upper knife and the slitter lower knife are assembled in the center of the slitter shaft, and the slitter rubber ring for strip breakage prevention is assembled. Next, both edge cutting knives are assembled to adjust the gaps and wraps of the upper and lower slitter drum shafts on the upper and lower slitter drum shafts.

1 and 2 show a conventional slitter, the basic structure of which is the drive side choke device 1 (DRIVE-SIDE CHOCK DEVICE) and the operation side choke device 2 (OPERATOR-SIDE CHOCK) and slitter It is roughly classified into three types of knife assembly 3 (SLITTER-KNIFE ASS'Y).

The driving choke device 1 and the operating choke device 2 described above are mounted on each base stand 10 (BASE-STAND) by design, and the operating choke is operated at forward transfer. It is conveyed by the base stand 10 (BASE STAND).

DRIVE-SIDE CHOCK is composed of CHOCK, support bearings and other accessories, arbor shaft for mounting slitter knife, etc. In the form of a cantilever.

The operating side choke device (2) (OPERATOR-SIDE CHOCK DEVICE) moves forward the arbor shaft supporting the slitter knife on the drive side in the cantilever shape from the operating side. The tapered sleeve 13 embedded in the choke of the operating side is precisely fitted and fixed to the end tapered portion 7 of the arbor shaft 5 so that the arbor shaft is supported by the bearing 12 in the form of both ends of the support beam.

OPERATOR CHOCK is also called MOVABLE CHOCK, which means that detachment is performed at any time. This is accompanied by disassembly and assembly work to rearrange the knife 4 of the slitter knife assembly 3 according to the change of the slitting coil standard during mass production, and frequently replace the product according to the LOT product production plan. have.

Therefore, it is necessary to shorten the replacement time and improve the existing unreasonable replacement method.

The disassembly of the tapered sleeve 13 by the conventional knife replacement method is performed by the operator pulling the base stand 10 by hand, or by using a tool such as a rubber hammer or, optionally, a steel hammer, to remove the tapered sleeve 13. The side is priced from the inside. At this time, the price direction of the force is not linear to the direction to dismantle (one-sided action) and must be priced several times.

At this time, even though the surface on which the impact is applied to the machine is damaged due to the impact, and the two chokes must be simultaneously priced on one base stand 10 (upper / lower ARBOR), Choke has a problem that the space for mechanical structural cost cannot be obtained.

As a result, the base stand frame near the upper choke must be hit, which creates a fatal problem that also damages the machine, such as damage to the internal bearings and damage to the lower sliding parts.

In this way, not only the damage to the machine by the impact, but also easy to separate parts there is a problem that is consumed a lot of time. In particular, due to the impact applied to the precision bearing not only reduces the life of the bearing but also takes a lot of time, there is a problem that the production efficiency is reduced.

The present invention has been made to solve the above problems, the purpose of improving the production efficiency by shortening the knife replacement time, the purpose of extending the life of the machine by improving the replacement method of the knife.

The object of the present invention is to prevent the machine from being damaged by an artificial impact and to easily release the tapered portion of the tapered sleeve and the arbor shaft which are firmly adhered to.

The present invention has a slitter knife assembly installed between the drive side choke device and the operating side choke device to achieve the above object, and the taper sleeve fixed to the taper portion of the arbor shaft and the base stand of the drive side choke device. In the slitter structure in which the tapered sleeve and the arbor shaft fixing end are fixed by clamp bolts while the tapered portion of the shaft is in close contact, the piston rod is installed behind the tapered portion of the arbor shaft so that the piston rod is supported by the stem rod and the inner choke cover. The inner choke cover is fixed to the base stand of the operating side choking device by the choke body, and the piston rod pushes the rear end of the taper sleeve by hydraulic pressure, releasing the binding between the taper sleeve and the taper part of the arbor shaft, and drains the hydraulic pressure. The piston rod is returned to its original position by the return spring, and the stem rod and the inner choke The burr is fixed, and the inner choke cover and the choke body are fixed, and the piston rod is installed to abut against the contact end formed at the rear of the taper sleeve, but is stepped backward toward the inner diameter side of the operating end which is the front end of the piston rod. Is formed, the stem rod is inserted into the inner diameter to the inner diameter side step of the piston rod is inserted into the arbor shaft end to support the piston rod, the stepped toward the piston rod is formed in the outer diameter of the stem rod and the rear end of the piston rod and The hydraulic space is formed between the inner choke cover is inserted so as to surround the outer diameter of the piston rod and the rear end is fixed to the stem rod, the hydraulic inlet is formed on one side of the inner choke cover to communicate with the hydraulic space, the inner choke The upper part of the front end of the cover is fixed to the choke body and connected to the base stand, The outer end is slidably fixed to the inner side of the choke body, the step is formed in the center of the outer diameter of the piston rod toward the front toward the front end of the inner choke cover, the sling is characterized in that the return spring is installed between the step Provides a release device for the arbor shaft.

As described above, the present invention has an effect of easily releasing the state in which the taper portion, which is the end of the arbor shaft, and the inner diameter of the taper sleeve are firmly bound without mechanical damage.

After releasing and releasing the clamp bolt that fixes the taper sleeve, apply hydraulic pressure to the hydraulic space, and the piston rod moves to the right direction and pushes the taper sleeve to the right to release the binding of the taper and taper sleeve. The side choke device can be moved to adjust the slitter knife assembly or to release the knife.

The return spring has the effect of returning the piston rod to its original position after draining the hydraulic pressure.

Referring to the configuration of the present invention in detail with reference to the accompanying drawings as follows.

The terms or words used in this specification and claims are not to be construed as being limited to the common or dictionary meanings, and the inventors can appropriately define the concept of terms in order to best explain their own design. Based on the principle, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

The slitter knife assembly 3 is installed between the drive side choke device 1 and the operation side choke device 2, and the base stand of the taper part 7 of the arbor shaft 5 and the operation side choke device 2 is provided. The tapered sleeve 13 and the arbor shaft 5 fixed end (clamp bolt 9) with the clamp bolt 9 in a state where the tapered portion 7 of the arbor shaft 5 is in close contact with the inner diameter of the tapered sleeve 13 fixed to (10). In the slitter structure in which 8) is fixed, the piston rod 20 is installed behind the taper portion 7 of the arbor shaft 5 so as to be supported by the stem rod 50 and the inner choke cover 40, and the inner side thereof. The choke cover 40 is fixed to the base stand 10 of the operating side choke device 2 by the choke body 30, and the piston rod 20 pushes the rear end of the taper sleeve 13 by hydraulic pressure. When the binding between the sleeve 13 and the taper portion 7 of the arbor shaft 5 is released and the hydraulic pressure is drained, the piston rod 20 is distal by the return spring 60. The stem rod 50 and the inner choke cover 40 are fixed, and the inner choke cover 40 and the choke body 30 are fixed.

The slitter knife assembly 3 is attached to the arbor shaft 5, and the knife 4 of the slitter knife assembly 3 is installed by the required space | interval. At this time, when the steel plate of different widths are needed, the knife 4 should be replaced. For this purpose, a configuration capable of releasing the tight contact between the tapered sleeve 13 and the tapered portion 7 of the arbor shaft 5 is proposed. will be.

Referring to the method of replacing the knife 4 in the present invention is as follows.

In order to replace the slitter knife assembly 3, the taper sleeve 13 of the choke 2 on the operating side must be separated from the arbor shaft 5.

Basically, the taper sleeve 13 is restrained inside the choke, but is designed as the inner and outer rings of the bearing 12 move about 5 mm in the axial direction. At this time, the inner ring moves with the tapered sleeve 13, and the outer ring of the bearing 12 is designed to be flowable by tolerance.

In the present invention, in order for the tapered sleeve 13 to be dismantled from the arbor shaft 5, the base stand 10 and the choke must be moved backwards simultaneously with the tapered sleeve 13.

The detailed configuration for the convenience is configured as follows.

The piston rod 20 is installed to abut against the contact end 13-2 formed at the rear of the taper sleeve 13, but a stepped portion is formed toward the rear at the inner diameter side of the operating end 21, which is a front end of the piston rod 20. do. Therefore, the operating end 21 is supported by the stem rod 50 except for the portion protruding toward the inner diameter. The inner diameter of the operating end 21 moves in close contact with the arbor shaft 5.

 The stem rod 50 is inserted into the inner diameter to the inner diameter side step of the piston rod 20 and is inserted and installed at the end of the arbor shaft 5 to support the piston rod 20, and the piston at the outer diameter of the stem rod 50. A stepped portion is formed toward the rod 20 so that the hydraulic space portion 70 is formed between the rear end of the piston rod 20. When the hydraulic pressure is applied to the hydraulic space 70, the piston rod 20 moves forward, and the operating end 21 of the piston rod 20 is the contact end 13-2, which is the rear end of the tapered sleeve 13. Pushed).

The inner choke cover 40 is inserted to surround the outer diameter of the piston rod 20 so that the rear ends thereof are fixed to each other by the stem rod 50 and the screw, and the hydraulic space part 70 and the one side of the inner choke cover 40 are fixed. The hydraulic inlet 41 is formed to pass through. When hydraulic pressure is injected through the hydraulic inlet 41, the hydraulic pressure enters the hydraulic space part 70, and the piston rod 20 moves forward by the hydraulic pressure.

The upper end of the inner choke cover 40 is fixed to the choke body 30 and bolts and fixed to the base stand 10, and the outer end of the bearing 12 installed at the outer diameter of the taper sleeve 13 is the choke body ( 30) is secured to the inner side of the (30). As described above, the inner diameter of the bearing 12 is brought into close contact with the bearing installation surface 13-1, which is the outer diameter of the tapered sleeve 13, and moves together with the tapered sleeve 13, and the outer diameter of the bearing 12 is choked. The slipperable surface 31 is formed to be in close contact with the inner diameter of the main body 30 and to be movable by a tolerance.

Stepped toward the front in the center of the outer diameter of the piston rod 20 toward the front end of the inner choke cover 40, the stepped toward the inside, formed on the stepped and the piston rod 20 of the inner choke cover 40 The return spring 60 is installed between the steps so that the hydraulic fluid is drained back to the original position.

Before injecting the hydraulic pressure through the hydraulic inlet 41, the clamp bolt 9 which is fastened to the fixed end 8 which is the end of the arbor shaft 5 and fixed to the taper sleeve 13 should be loosened and hydraulically applied.

In case of fixing after replacing the knife, the tapered sleeve 13 is fixed to the fixed end 8 by the clamp bolt 9.

1 is an overall configuration diagram showing a slitter arbor assembly.

2 is a detailed view showing a state in which a conventional slitter arbor shaft is fixed to an operating side choke device.

Figure 3 is a detailed view showing a release device of the slitter arbor shaft of the present invention.

Figure 4 is a view showing a state in which the tapered portion of the taper sleeve and the arbor shaft are separated from each other by the release device of the slitter arbor shaft of the present invention.

 <Brief description of symbols for the main parts of the drawings>

1: DRIVE-SIDE CHOKE DEVICE

2: OPERATOR-SIDE CHOKE DEVICE

3: Slitter Knife Assembly (SLITTER KNIFE ASSEMBLY)

4: knife 5: arbor shaft

6: nut 7: taper

8: fixed end 9: clamp bolt

10: base stand 11: cover

12: bearing 13: tapered sleeve

13-1: bearing mounting surface 13-2: contact end

20: piston rod 21: operating end

30: chalk body 31: slip surface

40: inner choke cover 41: hydraulic inlet

50: stem rod 60: return spring

70: hydraulic space

Claims (2)

Slitter knife assembly is installed between the drive side choke device and the operating side choke device, and the clamp bolt is in close contact with the taper of the arbor shaft and the taper of the taper sleeve fixed to the base stand of the operating side choke device. In the slitter structure in which the low taper sleeve and the arbor shaft fixing end are fixed, The piston rod 20 is installed behind the taper portion 7 of the arbor shaft 5 so as to be supported by the stem rod 50 and the inner choke cover 40, and the inner choke cover 40 is the choke body 30. Fixed to the base stand 10 of the actuating side choke device 2, and the piston rod 20 pushes the rear end of the tapered sleeve 13 by hydraulic pressure, so that the tapered sleeve 13 and the arbor shaft 5 When the binding between the taper portion 7 is released and the hydraulic pressure is drained, the piston rod 20 is returned to its original position by the return spring 60, and the stem rod 50 and the inner choke cover 40 are screwed. It is fixed to each other, the inner choke cover 40 and the choke body (30) is a bolt release device characterized in that the bolt is fixed. The piston rod 20 is installed in contact with the contact end portion 13-2 formed at the rear of the taper sleeve 13, and the inner end side of the operating end portion 21, which is the front end of the piston rod 20, is provided. Stepped toward the rear, the stem rod 50 is inserted into the inner diameter to the inner diameter side step of the piston rod 20 is inserted into the end of the aba shaft 5 to support the piston rod 20 is installed, A stepped portion is formed in the outer diameter of the stem rod 50 toward the piston rod 20 so that a hydraulic space portion 70 is formed between the rear end of the piston rod 20, and the inner choke cover 40 has a piston rod ( 20 is inserted to surround the outer diameter of the rear end is fixed to the stem rod 50, the hydraulic inlet 41 is formed to communicate with the hydraulic space portion 70 on one side of the inner choke cover 40, the inner choke cover The front end of the 40 is fixed to the choke body 30 is fixed to the base stand 10, the tapered sleeve 13 in the outer diameter The outer end of the bearing 12 is slidably fixed to the inner surface of the choke body 30, and a stepped portion is formed in the center of the outer diameter of the piston rod 20 toward the front so that the front inner side of the inner choke cover 40 is closed. Release device of the slitter arbor shaft, characterized in that the return spring (60) is installed between the stepped toward.

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