JPS5942136A - Thin sheet corrugating device - Google Patents

Abstract

PURPOSE:To form small corrugation with high accuracy, by detecting the height of corrugation formed on a thin sheet by a wave height detector and controlling a rolling reduction device feeding back the signal. CONSTITUTION:A thin sheet 1 is pressed against the surface of a grooved roll 5 by high-pressure water jet spouted from a high-pressure water jetting nozzle 42, and plastically deformed in conformity with the groove. The thin sheet passed out from a corrugating member 41, that is, a corrugated sheet is held by pressing rolls 46 and vibration is absorbed. Under this condition, the height of corrugation is detected by a wave height detector 33, and detected signal is fed back to a controlling device 35, and the opening of a pressure regulating valve is regulated according to deviation from a target value. By this way, the pressure of high pressure water jet spouted from the high pressure-water jetting nozzle 42 is regulated and the amount of interlocking of the thin sheet 1 into the groove, that is, the height of corrugation is regulated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thin plate corrugation apparatus for forming relatively small and uniform wave waves on a thin metal plate.

Waves with relatively small pitch and height and uniformity may have to be fabricated into sheet metal. for example,
In the production of grain-oriented silicon steel sheets, it has been proposed to make the crystal axis of the steel at a specific angle with respect to the rolling surface in order to improve the magnetic properties (see Japanese Patent Laid-Open No. 54-40223). For this purpose, corrugations extending in a direction intersecting the rolling direction are formed on the steel sheet during the manufacturing process. The pitch of this waveform is relatively small, for example 10 μm, and the wave height is uioo μm, and these dimensions must be accurate and uniform in order to obtain the required magnetic properties. If it is not uniform, for example, the iron loss factor of a silicon steel sheet will vary in the rolling direction and the sheet width direction, and an effective reduction in the iron loss factor will not be achieved.

In addition, it may be necessary to change the wave height depending on the plate thickness, material, etc. In such a case, from the viewpoint of work efficiency and equipment costs, it is desirable to be able to change the height of the corrugations within a certain range with one advantage, without having to replace corrugated members such as rolls.

Traditionally, in the production of roof panels, corrugated pipes, etc., it has been widely used to corrugate thin sheets using a press.
The waves have a height of several to several degrees, so high precision is not required for its purpose.

Therefore, conventional techniques cannot be applied to such special applications as described above, and a completely new wave processing technique must be developed.

The present invention has been made in response to the above-mentioned needs, and it is an object of the present invention to provide a wave processing device that can form small waveforms with high precision and that can change the wave height as necessary.

The thin plate corrugation processing apparatus of the present invention is comprised of a corrugating member, a rolling device, a thin plate support member, a wave height detector, and a control device.

The corrugated members are paired and press the thin plate from the front and back. The corrugated roll is a grooved roll in which at least one of the members has a large number of grooves extending in the roll axis direction, and is driven by one rotation.

The rolling device applies a load to the grooved roll to press the thin plate. The pressed thin plate is formed into a corrugated shape following the grooves of the grooved roll. The height of the waves changes depending on the size of the rolling blade.

The sheet support member is adjacent to the exit side of the corrugated sheet and supports the corrugated sheet.

The wave height detector is disposed near the thin plate supporting member, that is, at a position where the vibration disappears, facing the surface of the corrugated thin plate. The wave height detector detects the height of waves formed on the thin plate.

The control device controls the entire rolling down device based on the signal from the wave height detector, and adjusts the force for pressing the thin plate against the grooved roll or the position of the serration, thereby maintaining the height of the waves at a predetermined height.

As described above, in the thin plate corrugating apparatus of the present invention, the height of the corrugations formed on the thin plate is detected by the wave height detector, and the signal is fed back to control the rolling down device. Therefore, the height of the wave can be adjusted by adjusting the rolling blade or the position of the cercin, and the wave can be processed accurately to the desired wave height.

In addition, the corrugated thin plate vibrates vertically slightly immediately after leaving the member due to the vibration of the corrugation device itself or the corrugation. Therefore, the height of the wave cannot be detected accurately. In this invention, since the wave-processed thin plate is fully supported at the position where the wave height is detected, minute vibrations of the thin plate are absorbed by contact with the supporting member. therefore,
According to the device of the present invention, there is no error in detecting the wave height due to vibration.The accuracy of the wave height depends on the accuracy of the wave height detector, but is, for example, about ±5μ■η.

Examples of the present invention will be described below.

FIG. 1 is a perspective view showing the main parts of the device of the present invention.

As shown on the N side, the corrugated member 4 is a pair of upper and lower rolls 5,
It consists of 7. Grooves 11 extending in the axial direction of the rolls are cut with equal pinch on the surface of each roll 5, 7. The rolls 5.7 are arranged so that the peaks 12 of the opposing rolls enter the grooves 11, as shown in FIG. The height I of the rolls 5 and 70 and the pitch P are determined by the required dimensions of the corrugated sheet. For example, if the height of a corrugated plate with a thickness of 10 mm is 200 μm at maximum and the pitch is 4 mm,
Roll 5.7 height hU500μIη, pitch P
iJ: 4 mm.

The rolls 5, 7 are supported on chocks 16, 17 via bearings 14, 15. The upper chock 16 is fixed to a stand (not shown), and the lower chock 17 is attached to the stand so as to be movable up and down.

An electric motor (none of which is shown) is connected to the roll shafts 6 and 8 protruding from the chocks 16 and 17 via a shaft coupling, a speed reducer, etc., and the rolls 5 and 7 are rotated and driven.

A lowering device 21 is connected to the lower chock 17. That is, the hydraulic cylinder 22 is attached to the lower chock 17.
A hydraulic pump 5 is connected to the cylinder 22 via a servo valve 24.

On the exit side of the rolls 5, 7 there is a support roll 31 adjacent to these rolls 5, 7 with one force at the same level as the lower roll 7.
has been placed. The supporting roll 31 is fixed on a pedestal (not shown) and supports the thin plate 2 corrugated by the roll 5°7 from below.

On the exit side of the support roll 31, the wave &2 is several tens or ten's.
The course can be changed to go in the direction.

A wave height detector 33 is arranged near the support roll 31 so as to face the surface of the corrugated plate 2. Wave height detector 3:3
Electrical (including magnetic), ultrasonic, or optical plate-shaped detectors that are commonly used are used.

Control device:) 5 consists of a control computer,
The input side is connected to the wave height detector 33, and the output side is connected to the servo valve 24.

In this embodiment, the thin plate 1 supplied with pressure to the corrugation equipment has a coiled shape, and the thin plate 1 is unwound from an uncoiler (not shown), and the corrugated plate 2 is fed to the coiler (not shown).
(not shown). Incidentally, a tension of 1 to 10 J is applied to the thin plate 1 and the corrugated plate 2 by an uncoiler and a coiler depending on the material.

Next, the operation of the wave processing device configured as described in item 1 will be explained.

First, target values for root thickness, material, wave height, and pitch are set in the setting section of the control device 35, and the required reduction amount (load or cersin position) is set in the calculation section according to these values and the wave machining speed. It is calculated by

The thin plate l is fed between rolls 5 and 7, where the roll groove 1
A waveform is formed by undergoing plastic deformation so as to bite into 1. The wave machining speed is, for example, 100 to 300 ITI.

The corrugated sheet 2 coming out of the U-rules 5 and 7 is supported by the support roll 31 from below. By contacting the corrugated sheet 2 with the support roll 31, minute vibrations applied to the corrugated sheet 2 during processing are absorbed. The wave height detector 3:3 continuously detects the height of the wave &2 in a state where the vibration has disappeared. This detection signal is sent to a comparison section of the control device 35, where it is compared with a target value. Based on the deviation between the detected value and the target value, a required reduction amount (load or celsin position) is determined by the calculation section, and the result is output to the servo valve 24 in the case of hydraulic pressure reduction. The hydraulic cylinder 22 is actuated by opening and closing the servo valve 24, and the gap between the rolls 5 and 7 is set to a required value.

FIG. 3 shows another embodiment of the invention. In the above embodiment, the corrugation member was composed of a pair of grooved rolls, but in this embodiment, it is composed of a combination of one grooved roll and a high-pressure water injection nozzle. A single cut plate is cut to a certain length. In FIG. 3, parts and devices that are the same as those shown in FIG. 1 are given the same reference numerals, and explanations of these parts are omitted.

The corrugated member 11 consists of a grooved roll 5 and a high-pressure water injection nozzle 42. The high-pressure water injection nozzle 42 is arranged directly below the grooved roll 5 and opens along the roll 5 in the form of a slit. The width of the opening UO is approximately 5 to 5 recesses. A high-pressure water injection nozzle 42 is attached to a header 43 and connected to a pump 45 via a pressure regulating valve 44.

A pair of press rolls 46 are arranged on the exit side of the corrugated member 41. The bent and corrugated parts are thin plates 1 and 1 on the front and back of the member 41.
The opposite of 2! A guide plate 47 is provided to prevent ll' and to correctly guide the plate to the pass line.

- In the apparatus constructed as in item 1 above, the thin plate 1 is pressed against the surface of the grooved roll 5 by a high-pressure water jet ejected from the high-pressure water injection nozzle 42, and is plastically deformed following the grooves 11. The corrugation is lightly pressed against the thin plate, that is, the corrugated plate 2, which has come out of the member 41 by a presser roll 46, and vibrations are absorbed. The presser roll 46 is rotationally driven at the same circumferential speed as the grooved roll 5.

When the vibration of the corrugated plate 2I-1 disappears, the height of the wave is detected by the wave height detector 33. The detection signal is fed back to the control device 35, and the opening degree of the pressure regulating valve 44 is adjusted based on the deviation from the target value. In addition, the pressure of the high-pressure water jet ejected from the high-pressure water jet nozzle 42 is adjusted, and the amount of penetration into the groove 1 of the thin plate 1, that is, the height of the wave, is adjusted. The pressure of the high pressure water supplied to the nozzle 42 is, for example, 50
It is adjustable in the range of ~500''/crJ.

This invention is not limited to the first embodiment.

That is, in the first embodiment, the downstream equipment may be of an electric type in place of the fully hydraulic type. [For rail rolling, one of the rolls of the member can also be a roll without grooves. In this case, the surface of the non-grooved roll is rubber-lined. Furthermore, the roll crown may be adjusted by applying internal pressure between the rubber lining and the bobber. Alternatively, in a pair of rolls, one may be driven to rotate and the other may be used as an idler.

The single-sonic wave machining device configured as described above has a plate thickness of 2, for example.
It is applied to process corrugations with a height of 5 μIn to 25 μm and a pitch of 1 to 30 mm on thin metal plates such as steel, aluminum, copper, etc. with a bleaching of 0 μm to 5 μm. In particular, the present invention is effective in manufacturing electrical steel sheets that require accurate waveforms.

[Brief explanation of the drawing]

Fig. 1 shows an embodiment of the present invention, and Fig. 2 is a perspective view of the main part of the corrugating device, Fig. 2 is a partially enlarged sectional view of the grooved roll shown in Fig. 1, and Fig. 3 is a partially enlarged sectional view of the grooved roll shown in Fig. 1. It is a schematic diagram of a wave processing device, showing another embodiment of the invention. 1... Metal thin plate, 2... Corrugated plate, 4, 41... Corrugated member, 5.7... Grooved kilo roll, 11... Groove, 1
6.17...Chock, 21...Reducing device, 22.
...Hydraulic cylinder, 31. ．． 46... Thin plate support member, 33... Wave height detection device, 35... Control device, 42
...High pressure water injection nozzle. Patent applicant Representative patent attorney Tomoyuki Yafuki (and 1 other person)

Claims (1)

[Claims] A plurality of grooves 11 are formed in pairs so as to pinch the thin metal plate 1' from the front and back, and at least one of them has a large number of grooves 11 extending in the roll axis direction,
The wave member 4, which is the grooved rolls 5 and 7 that are rotationally driven, is
, at least one corrugation is applied to the corrugated thin plate 2 in the vicinity of the thin plate support member 31 adjacent to the exit side of the part 4, and the thin plate support member 3]. surface(
A thin plate corrugating device comprising a wave height detector 33 arranged to face C, and a control device 35 that controls the rolling device 21 based on a signal from the wave height detector 33.