JPH11322185A - Device for removing space paper of band steel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To machine rewound band steel at high speed by automating removal work of space paper of band steel, and quickening its speed. SOLUTION: A device for removing space paper of band steel comprises a cylindrical space paper suction means 4 using compressed air, provided in proximity to a rewinding reel 3 of band steel 2; a transport pipe 5 extended backward from the suction means 4 to carry space paper 1 on air flow; a recovery basket 7 for separating the transported space paper 1 from air to recover it; and a means 8 for supplying compressed air to the space paper suction means 4. The suction means 4 is an air thruster having an annular nozzle 41 in front of a cylinder and blasting air from this nozzle 41 toward the center in an inclined direction to an axis to form air flow. The inner diameter D of the front edge 51 of the transport pipe 5 is made larger than the rear outer diameter (d) of the cylinder to form such structure that the air thruster and the transport pipe 5 overlap each other by the short distance with a slight clearance 6. Air flow formed by the air thruster sucks outside air through this clearance to transport space paper continuous in band shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for continuously removing slip sheets sandwiched between strip coils. Here, "band steel" is not limited to steel in a strict sense, but is a general term for a thin metal plate having a narrow width.

[0002]

2. Description of the Related Art For example, a 42Ni alloy used as a lead frame material for an IC is supplied in the form of a strip having a predetermined thickness and width. However, this kind of alloy is relatively soft as a metal. In the process of manufacture and transportation, scratches are likely to occur. On the other hand, these strips are extremely disliked for surface scratches due to their use. Therefore, when wound into a coil, a soft paper called "interleaf paper" is sandwiched between the steel strips to form a cushion.

[0003] This slip-sheet may also have to be removed when unwinding the coil, due to processing steps. In the past, this was done manually. Since this operation has a limited speed and determines the speed of the unwinding process of the steel strip, an improvement is required.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to automate such a stripping operation of strip steel strip, to increase the speed of the stripping work, and to process the unraveled strip steel at a high speed. To provide an apparatus for performing

[0005]

As shown in FIG. 1 and FIG. 2, the structure of the main part of the apparatus for removing the slip sheet of the steel strip according to the present invention is shown in FIG. A cylindrical slip-sheet suction means (4) provided near the return reel (3) and utilizing compressed air. A transport pipe extending rearward from the suction means and carrying the slip-sheet (1) in an air flow. (5) A collection basket (7) for separating and transporting the separated slip sheet from the air, and a means (8) for supplying compressed air to the slip sheet suction means, wherein the slip sheet suction means is provided. An air thruster having an annular nozzle (41) in front of a cylinder and forming an air flow by ejecting air from the nozzle in a direction oblique to an axis toward the center, the front end of a transport pipe. The inner diameter (D) of (51) is made larger than the outer diameter (d) of the rear part (42) of the cylinder, The thruster and the transport pipe overlap each other for a short distance with a small gap (6), and the air flow formed by the air thruster sucks external air through this gap to transport the continuous interleaf paper in a strip shape. It is a device that is intended to be obtained.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 2, the operation of the air thruster is such that the flow of air (A) supplied to the nozzle sucks external air (B) and the flow of air (from left to right in the figure). Toward). Further, the air (C) is drawn in from the gap (6), and the air flow is enhanced as A + B + C = D, and the slip sheet is sucked and transported.
The air thruster is used for the pneumatic transportation of the granular material, and a commercially available product can be easily obtained. Therefore, an appropriate one may be selected and adopted depending on conditions such as the weight of the slip sheet to be removed. The pressure of the compressed air is usually about 2 to 5 atm.

The transport pipe (5) can be made of any material, for example, a rigid polyvinyl chloride pipe is suitable.
The gap (6) between the rear of the air thruster and the transport pipe is 0.
About 5 to 1 mm is appropriate. If the gap is small, sufficient air is not added. However, if the gap is too large, the speed of the air flow is reduced, so that the speed of removing the slip sheet is reduced or the transporting power is insufficient. The length of the transport pipe that can be installed is determined by such factors as the capacity of the air thruster and the weight of the slip sheet. The bending can be provided at several places without any trouble as long as it is within 90 degrees.

The basket (6) for separating the slip sheet from the air transported at the end of the transport pipe has rigidity as long as the permeability is such that the speed of the air flow is not substantially reduced. It may be a structure, a flexible plastic net or a bag with many holes.

In order to remove the strip between strips using this apparatus, compressed air is supplied to the suction means (4) to generate an airflow in the suction direction and placed, and the strip (2) is unwound to remove the slip. (1)
May be inserted into the suction means. The slip sheet is sucked and transported in an air stream, and reaches a collection basket (7).
There, it is separated from the air and collected.

[0010]

According to the present invention, if the slip sheet is removed using the apparatus of the present invention, once the slip sheet is deposited in the suction device, the slip sheet is automatically sucked and carried away. Removal proceeds. The suction and transport speed can be adjusted over a wide range by adjusting the pressure of the compressed air supplied to the device. In the past, since processing was performed manually, the processing was limited to at most 50 m / min by one person. However, according to the apparatus of the present invention, processing at 150 m / min or more was easy. Removal of the slip sheet does not limit the speed of subsequent processing steps. In this way, it is possible according to the invention to relieve the operator from simple but unavoidable tasks, and to increase the speed of the working of the strip to increase the productivity.

[Brief description of the drawings]

FIG. 1 is a layout view showing the overall configuration of an apparatus for removing a strip between strips according to the present invention.

FIG. 2 is a sectional view showing the structure of a main part of the apparatus shown in FIG. 1;

[Explanation of symbols]

 Reference Signs List 1 interleaf paper 2 strip steel 3 rewind reel 4 interleaf suction means 41 annular nozzle 5 transport pipe 51 front end of transport pipe 6 gap 7 collection basket 8 compressed air supply means A, B, C, D Air flow D transport pipe Inside diameter at the front end of d Outside diameter at the back of the cylinder

Claims (1)

[Claims] 1. A rewind reel for a steel strip provided in close proximity to a reel.
Cylindrical slip-sheet suction means using compressed air, a transport pipe extending rearward from this suction means and placing the slip sheet on the air flow, and a collection basket for separating and recovering the slip sheet that has been transported from the air. And a means for supplying compressed air to the slip-sheet suction means, wherein the slip-sheet suction means has an annular nozzle in front of the cylinder and ejects air from the nozzle in a direction inclined toward an axis toward the center. An air thruster that forms an air flow by doing so, the inner diameter of the front end of the transport pipe is larger than the outer diameter of the rear of the cylinder, and the air thruster and the transport pipe have a structure that overlaps for a short distance with a small gap,
A device that removes a strip between strips so that a continuous stream of strips can be transported by sucking external air through the gap by an air flow formed by an air thruster.