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Cold rolling uncoiler guide sleeve repair method and device thereof

A repair method and guide sleeve technology are applied in the field of guide sleeve repair of a cold rolling decoiler and its device, which can solve the problems of similar hot working hardness, long maintenance period and high maintenance cost, and achieve long service life, avoid equipment failure, and easily effect of operation

Inactive Publication Date: 2016-03-30
浙江龙盛薄板有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome a series of problems brought about by the traditional structure, such as expensive spare parts, non-common use after maintenance, high maintenance cost, long maintenance cycle and similar thermal processing hardness, the present invention proposes a core that is easy to maintain, easy to operate, and has a relatively high manufacturing cost. The shaft is not subject to wear, and after the service life of the copper sleeve is over, only the copper sleeve with lower cost needs to be replaced

Method used

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  • Cold rolling uncoiler guide sleeve repair method and device thereof
  • Cold rolling uncoiler guide sleeve repair method and device thereof
  • Cold rolling uncoiler guide sleeve repair method and device thereof

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Experimental program
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Embodiment 1

[0051] Embodiment 1 The cold rolling decoiler guide sleeve repair method of the present invention comprises the following steps:

[0052]1) Disassemble the worn guide sleeve, and machine the inner hole of the guide sleeve on a lathe, with a processing amount of 1-2mm on one side;

[0053] 2) On the milling machine, the inner hole wall on both sides of the guide sleeve is processed at a position 200mm from the end;

[0054] 3) Process axial grooves at both ends of the guide sleeve on the slotting machine;

[0055] 4) Process the copper sleeve on the lathe to ensure the transition fit between the copper sleeve and the inner hole of the guide sleeve, the inner hole of the copper sleeve and the mandrel, and under the premise of meeting the stress requirements, the actual axial processing length of the copper sleeve is greater than the theoretically calculated copper sleeve. The minimum axial length of the sleeve (if there are multiple calculation results, take the theoretical max...

Embodiment 2

[0074] Embodiment 2 The device constructed according to the repair method of the present invention includes a guide sleeve 1, a mandrel 4 and a sector plate 3. The outer wall of the guide sleeve 1 is provided with a plurality of inclined wedges 11 with slopes. All The direction of the slope is the same, and each wedge is correspondingly installed with a fan-shaped plate 3, the fan-shaped plate 3 slides and fits with the guide sleeve 1 through the wedge 11, and the two ends of the guide sleeve 1 are respectively inlaid with copper sleeves 2 along the axial direction , the outer ring of the copper sleeve 2 is symmetrically provided with two engaging parts 21 for being stuck in the slot 12 of the guide sleeve, the copper sleeve 2 is transitionally fitted with the inner hole of the guide sleeve 1, and the mandrel 4 is inserted into the inner hole of the copper sleeve 2, the mandrel 4 is fixed to the copper sleeve 2 through the connecting key 41 axially arranged on the side wall of ...

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Abstract

The invention discloses a cold rolling uncoiler guide sleeve repair method and a device thereof. The method comprises the following steps: a worn guide sleeve is dismounted and processed to a proper size, and a tool withdrawal groove and an axial groove are processed; copper sleeves are processed on a lathe to guarantee transitional fit between the copper sleeves and an inner hole of the guide sleeve and clearance fit between inner holes of the copper sleeves and mandrels; after parts are assembled, no-load actions are repeated for several times; and after the actions are stabilized, a steel coil is loaded for trial turning. The device, built according to the repair method, comprises the guide sleeve, the mandrel and a fan-shaped plate; the copper sleeves are respectively embedded in the two ends of the guide sleeve in the axial direction; two clamping parts are symmetrically arranged on outer rings of the copper sleeves; the copper sleeves and the inner hole of the guide sleeve are in transitional fit; and the mandrels are inserted in the inner holes of the copper sleeves, are fixed with the copper sleeves through connecting keys axially arranged on the side walls of the mandrels, and are in clearance fit with the copper sleeves. The repair method and device have the following beneficial effects: the mandrels are not worn; after the service life of the copper sleeves is used up, the copper sleeves with lower cost are only replaced; the maintenance is convenient; the operation is easy; the stock of spare parts is reduced; and funds are saved.

Description

technical field [0001] The invention relates to a method and a device for repairing a guide sleeve of a cold rolling uncoiler, belonging to the metallurgical industry. Background technique [0002] All cold-rolled strip mills have uncoilers for opening steel coils. This equipment is arranged at the head of the pickling line, cold rolling mill pre-coiler, temper mill uncoiler, and recoiler uncoiler. The coil produced in this process is put on the fan-shaped plate of the uncoiler, and the mandrel inside the coiler is pulled by the hydraulic cylinder, and the mandrel pulls the outer diamond-shaped guide sleeve, and the guide sleeve has five inclined wedges with a slope. The oblique wedge on the fan-shaped plate slides relative to each other, so as to realize the diameter expansion of the fan-shaped plate, tighten the inner ring of the steel coil, and realize the fixing of the coiled sheet on the fan-shaped plate of the uncoiler. Roll feeding, five-roll straightening, etc. will...

Claims

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Application Information

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IPC IPC(8): B23P6/00B21C47/30
CPCB23P6/00B21C47/30
Inventor 赵占伟王华勇瞿光清阮加才
Owner 浙江龙盛薄板有限公司
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