JPH043216Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a device that determines the bending of a finished product during rolling of a strip and automatically processes the strip in a subsequent process based on the results. .

(Prior Art) When a bend exceeding an allowable value occurs during rolling of a strip, it is necessary to detect it and to sort out defective products due to the bend from other good products.

As an example of such a strip processing device,
There is one shown in Publication No. 7850. This device consists of a fixed plate with a through hole and a movable plate rotatably attached to the fixed plate in order to detect bending of a rod-shaped object. By adjusting the diameter of the center hole, it is possible to quickly respond to changes in the size of the rod-shaped object whose bending is to be measured. Then, when a defective bent product passes through the detection plate, an electrical signal is extracted, and based on this signal, a device installed in the subsequent process for selecting good products, defective products, and splash removal equipment is operated to perform sorting processing.

(Problems to be solved by the invention) However, the device shown in the above-mentioned Japanese Utility Model Publication No. 56-7850 has a complicated structure and has problems in robustness.
In particular, when inspecting a large rod-like object at a high feeding speed to improve efficiency, there is a problem in that the rod-like object is easily damaged or malfunctions due to impact. In addition, the operating signal for the splash extraction device for good and defective products is to take out an electrical signal using a level switch when the bar-shaped object exceeds the allowable bending amount and contacts the detection plate, so the signal reception lacks certainty and reliability. There are inherent difficulties.

(Means for solving the problem) The present invention was made to solve the above-mentioned problem, and uses a strip bending detector that is made into a cylindrical shape by combining sleeves divided into upper and lower parts. When a bent strip is about to pass through the discrimination device, the pressure applied between the strip and the upper and lower sleeves is detected, and based on that signal, defective products are automatically sorted from other non-defective products. It provides equipment.

In other words, the gist of the present invention is to hold a divided cylindrical sleeve inside the housing, and to
A bending detector that is supported so as to be movable downwardly, has a detection end for detecting the displacement thereof, and has a pressing mechanism for a sleeve that is movable upwardly and downwardly, and a strip detector provided on the downstream side of the bending detector. , a guide for switching the strip conveyance path provided further downstream of the strip detector, a guide switching device connected to the guide, and the bending detector;
The present invention relates to an automatic strip bending discrimination processing device comprising a strip detector and a control device that inputs and outputs signals to and from a guide switch.

Next, the present invention will be explained in detail using the drawings.

FIG. 1 is an overall plan view of an example of the device of the present invention, and 1
2 is a strip material, 2 is a bending detector, 3 is a table roller, 4 is a strip material detector, 5 is a guide switching device (cylinder), 6 is a guide, 7 is a control device, 8 is a good material pocket, 9 is a defective material pocket , 10 are stoppers.

A bending detector 2 is installed on the traveling path of the strip 1,
The strip 1 is conveyed by a table roller 3 through a passage hole of a bending detector. The bend detector 2 generates a signal and inputs it to the control device 7 when detecting a bent material as will be described in detail later. Strip detector 4
is provided on the downstream side of the bending detector 2 to determine the presence or absence of steel material and input the information to the control device 7. The guide switching device (cylinder) 5 is moved by an output signal from the control device 7, moves a guide 6 connected to one end thereof, and switches the conveyance path of the strip.

The control device also issues a command signal to the bend detector 2 to return the sleeve of the strip passage hole, which has expanded due to the passage of the defective material after the strip passes, to its initial diameter.

FIG. 2 is an enlarged vertical cross-sectional view of the bending detector 2. FIG.

A lower sleeve 12 is fixedly provided at the bottom of the housing 11, and a sleeve cap 13 is provided in the space of the housing 11 so as to be vertically slidable. An upper sleeve 14 is fixed to the lower part of the sleeve cap 13. A buffer material, such as a spring 15, which normally applies an upward force is interposed between the sleeve cap 13 and the bottom of the housing, so that a force that constantly raises the sleeve cap 13 is applied.

On the other hand, a tightening device for the sleeve cap 13 is provided in the upper part of the housing 11, and the hydraulic cylinder 16 is shown as an example in the figure. The hydraulic cylinder 16 is fixed to the housing 11, the tip of the shaft 17 is in contact with a clamp piece 18, and the clamp piece 18 is positioned above the sleeve cap 13. A pressure switch 19 is provided in the hydraulic cylinder 16 as a detection end for detecting the displacement of the upper sleeve 14, and when an external force is applied to the shaft 17 of the hydraulic cylinder 16, a change in the oil pressure in the hydraulic cylinder 16 is sensed, and the first A signal is sent to the control device 7 shown in the figure. That is, lower sleeve 1
The strip passing hole formed by the sleeve cap 1 and the upper sleeve 14 is resisted by the defective material that has a bend exceeding the allowable intersection, and a force acts to spread the sleeve cap 1.
3, and along with this, the clamp piece 18,
The shaft 17 is also pushed up at the same time, and the oil pressure in the hydraulic cylinder 16 rises, which is detected by the pressure switch 19 and sends a signal to the control device. Reference numeral 20 denotes a pump, which is operated and stopped in response to commands from the control device 7, takes oil in and out of the hydraulic cylinder 16, and moves the shaft 17 forward and backward.

FIG. 3 is an enlarged cross-sectional view of the bending detector, and symbols 11 to 20 are the same as in FIG. 2.

The clamp piece 18 is assumed to have a constant length in the longitudinal direction of the upper sleeve 14 and lower sleeve 12, and to apply a constant clamping force to the clamp piece 18, but it is not necessary to do so, and the lower end of the shaft 17 can be directly attached to the sleeve cap 13. It may also be a structure in which they touch each other.

In FIGS. 2 and 3, an example in which defective material is detected using the hydraulic cylinder 16 and the pressure switch 19 has been described, but the invention is not limited to this, and for example, a strain gauge may be installed between the shaft 17 and the clamp piece to detect a sleeve cap. It is also possible to detect displacements of 13. In that case, the pressing force of the sleeve cap may be provided by a hydraulic cylinder as shown in the figure, or by a combination of a screw and a motor.

(Function) Since the present invention is configured as described above, it is possible to automatically detect the bending of a strip and dispose of a defective material when a bent material exceeding the allowable tolerance is detected. That is, in FIG. 1, when the strip 1 is conveyed from right to left and the bend detector 2 exceeds the allowable tolerance, it is determined to be a defective material, and a signal is sent to the control device 7. Defect material is determined by the fact that the strip material passage hole formed by the lower sleeve 12 and the upper sleeve 14 is resisted by the strip material that exceeds the allowable tolerance, and a force is applied to expand the material, as shown in FIGS. 2 and 3. When the cap 13 is pushed up, the clamp piece 18 and the shaft 17 are also pushed up at the same time, and the hydraulic pressure inside the hydraulic cylinder 16 increases, which is detected by the pressure switch 19. After that, a signal is sent from the control device to the pump 20,
By applying pressure in the upward direction of the shaft 17 and creating a gap between the upper sleeve 14 and the lower sleeve 12, defective materials can easily pass through.

When a defective material is detected, the control device 7 in FIG. 1 issues a command to the guide switching cylinder 5 to set the guide 6 to the position shown by the broken line in the figure based on a signal. As a result, the strip path allows the defective material to be fed into the defective material pocket 9. The switching timing of the guide 6 can be properly controlled by using the strip passing signal from the strip detector 4.

If the bending detector determines that the material is good, the guide 6 is switched to the solid line side in the figure based on the input signal of the strip detector 4.

That is, the guide 6 is moved to the position shown by the broken line in the figure due to the defective material detection signal from the bending detector 2 and the input signal from the strip detector 4, and there is no defective material detection signal and only the input signal from the strip material detector 4. Guide 6 when
Set to the solid line position.

(Effects of the invention) According to the invention, as explained above, it is possible to directly detect bent material by the compressive force acting between the strip material and the sleeve, which is highly reliable and reliable. This has the advantage that the strip material processing in the subsequent process can be automatically performed based on the detection signal.

[Brief explanation of the drawing]

FIG. 1 is an overall plan view of an example of the device of the present invention, FIG. 2 is an enlarged vertical cross-sectional view of a bending detector, and FIG. 3 is an enlarged cross-sectional view of the bending detector. 1... Strip material, 2... Bending detector, 3... Table roller, 4... Strip material detector, 5... Guide switching cylinder (guide switching device), 6... Guide,
7... Control device, 8... Good material pocket, 9... Defective material pocket, 10... Stopper, 11... Housing, 12... Lower sleeve, 13... Sleeve cap, 14... Upper sleeve, 15... Spring, 16... Hydraulic cylinder, 17... Shaft, 18... Clamp piece, 19... Pressure switch, 20... Pump.

Claims (1)

[Scope of utility model registration request] A bending detector that allows one side of the cylindrical sleeve to be moved up and down, and determines whether or not the strip material is bent by its displacement to distinguish between defective material and good material, and outputs a signal if the material is defective, and a downstream side of the bending detector. It consists of a strip detector that determines whether the strip passes or not, a guide that switches the conveyance path of the strip between defective material and good material, and a control device that issues a switching command to the guide. This automatic strip bending discrimination processing device is configured to switch the conveyance route of the strip to the defective material side based on the signal from the container and the signal from the strip detector.