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Strip expanding drum device

A reel expansion and contraction technology, which is applied in the field of expansion and contraction reel devices, can solve problems such as screw thread wear, troublesome unloading work, and difficulty in rotating the central screw, achieving simple production, simple and practical structure, and shortened unloading operation time Effect

Inactive Publication Date: 2011-01-26
上海格林赛高新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the special-shaped lead frame strip generally needs to apply a large tension in order to control the strip shape and stabilize rolling during rolling, as the diameter of the coil increases, the radial pressure on the coil is very large, which makes the center when unloading the coil. The rotation of the screw is very difficult, and the thread wear is very serious
Brings considerable trouble to the unloading work

Method used

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Embodiment Construction

[0012] The following are the embodiments made according to the technical solution of the present invention in conjunction with the accompanying drawings to further illustrate the present invention.

[0013] like Figure 1~2 As shown, the reel device is composed of a lathe four-claw self-centering chuck 4, a lathe chuck anti-jaw 8, a bow block 5, a bow block reinforcement rib 7, a connecting flange 3, an elastic ring 6, and a wedge 9, etc. . The working principle of the lathe four-jaw self-centering chuck is: insert it into the square hole 1 on the small bevel gear and rotate, the small bevel gear will drive the big bevel gear to rotate, the plane thread on the back of the big bevel gear and the back of the four chuck anti-jaws 8 thread meshes. When the plane screw thread rotates, it drives the four claws to move synchronously in the radial direction, and each of the four chuck anti-jaws 8 fixes a bow-shaped block 5, and one of the wedge block 9 and the bow-shaped block 5 is ...

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Abstract

The invention discloses a strip expanding drum device with the width of less than 100mm. The conventional drum devices are connecting rod and wedge type mechanical drums mostly due to small structure size, and when the drums discharge coils, an expanding mechanism is difficult to act because of large radial pressure of the strip coils, a screw thread pair wears severely, and great troubles are brought to the coil discharging work. The technical scheme provides an expanding drum device with simple structure and convenient coil discharge; a multiple-jaw automatic centering chuck for a common lathe is utilized; each external jaw of the chuck is fixed with an arch block to form a drum; the arch block is sleeved with an elastic ring of which the periphery is provided with a wedge-shaped notch; a wedge is fixed on any arch block; and the wedge is in fit with the wedge-shaped notch on the elastic ring during coiling, so the radial pressure of a strip coil acts on the elastic ring; and during coil discharge, the elastic ring shrinks inwards under the action of internal force and generates a clearance with the internal diameter of the strip coil, so the shrinkage of the drum is easy.

Description

technical field [0001] The invention relates to an expansion-contraction reel device for strips, in particular to an expansion-contraction reel device for special-shaped lead frame strips (with a width less than 100 mm). Background technique [0002] The rewinding and unwinding reel device is an integral part of the metal rolling system. Its function is to rewind and unwind the rolled material and generate tension during rolling, and the diameter of the reel can expand and shrink during loading and unloading. Metal strips are generally formed by rolling plates and then slitting, but for various reasons, special-shaped lead frame strips cannot be produced in multiple strips by the method of metal strips, and can only be produced in a single strip. The width is less than 100mm and the coil weight is less than 300kg. Therefore, the pyramid-type hydraulic reel produced by conventional plates is not suitable for the production of special-shaped lead frame strips due to its large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H75/24B21C47/30
Inventor 余波杨惟志
Owner 上海格林赛高新材料有限公司
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