JPH1015725A - Press processing method for trimming chip and press processing unit for trimming chip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly carry out the pressed trimming chips of plural kinds of steels by obtaining the sum value of corrected actual volumes of every steel kind, and starting execution of press processing for the trimming chips. SOLUTION: An operating means 7 divides the volume of trimming chips of a steel kind by the corresponding volume efficiency to obtain the corrected trimming chip amount. The above operation is performed for every steel kind to add the corrected trimming chip amounts. If it is judged by the operating means that the corrected trimming chip amount is more than a predetermined value, a control means 9 is started. The control means 9 gives a control signal to a servo valve 13 in such a manner that the servo valve 13 is operated to adjust the inflow and outflow of operating oil and a piston 14 is pushed down to conduct press processing, thereby starting press processing for trimming chips of steel plates of plural steel kinds.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for treating trimming waste generated by trimming one or more types of steel sheets, and more particularly to a technique suitable for press-treating the generated trimming waste and carrying it out. .

[0002]

2. Description of the Related Art Conventionally, a method and an apparatus for processing trimming waste (also referred to as "scrap" as appropriate) generated by trimming both ends of a steel plate, an aluminum plate, or the like, have been disclosed.
Various things have been proposed.

For example, in the prior art described in Japanese Patent Application Laid-Open No. 03-117532, there is also described an apparatus for guiding trimming waste to a press room, performing a press process, and carrying out a press-processed scrap. ing.

In such an apparatus, a method of measuring trimming waste and executing a press process when the volume of the trimming waste reaches a predetermined amount, and an amount of the trimming waste accumulated in the press chamber are determined by an operator. Employs a method of monitoring and driving a press mechanism based on the experience of an operator. Then, the scraps pressed by such a method are sequentially carried out.

[0005]

However, since the elasticity at the time of pressing varies depending on the type of steel sheet and the shape of the steel sheet, even if the same volume of steel sheet is pressed, the scrap volume after pressing is reduced. Since they are not the same and the amount of scrap volume cannot be predicted, a reduction in the unloading efficiency, which is the efficiency of the unloading work of the scrap after pressing, has been caused. Here, the unloading efficiency is defined by the unloading amount per unloading number, and is obtained by dividing the unloading amount by the unloading number.

Further, if the volume of scrap after pressing becomes larger than expected, the unloading material may be caught by the components of the apparatus during unloading work, and the apparatus may be damaged. When the press processing is performed with the trimming waste amount, there has been a problem that the amount of the press processing is reduced and the unloading efficiency is extremely deteriorated.

[0007] Therefore, if it is known in advance how much the scrap volume after the pressing process will be in accordance with the type of steel and the volume of trimming waste, such a problem can be solved.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to provide a trimming waste press processing means capable of smoothly carrying out work and improving carry-out efficiency. Is to provide.

[0009]

In order to solve the above problems and to achieve the object of the present invention, according to the first aspect of the present invention, trimming waste generated by trimming at least one type of steel plate is pressed. A step of previously obtaining a correction coefficient (volume efficiency) determined by a steel type and an actual volume of a steel sheet to be pressed; a step of obtaining an actual volume of trimming waste for each steel type; Correcting the actual volume of the trimming debris with a corresponding correction coefficient, obtaining a total value of the corrected real volumes for each steel type, and, when the total value is equal to or greater than a predetermined value, trimming debris. Starting the execution of the pressing process of the present invention.

According to a second aspect of the present invention, there is provided another aspect of the present invention, that is, an apparatus for press-treating trimming waste generated by trimming one or more types of steel sheets, wherein the steel type and the press Storage means for storing a correction coefficient (volume efficiency) determined by the actual volume of the steel sheet to be processed, and processing for obtaining the actual volume of trimming waste for each steel type;
A calculating means for performing a process of correcting the actual volume of the trimming waste for each steel type with a corresponding correction coefficient, and a process of obtaining a total value of the corrected real volume for each steel type; and A press processing device for trimming waste, comprising: a control unit that starts a press operation of a press mechanism that presses trimming waste when the value is equal to or greater than a predetermined value.

Further, according to the third aspect of the present invention, in order to obtain a predetermined volume and shape after pressing using equipment for pressing and processing trimming waste of a steel sheet, "volume efficiency =
(Treatment volume of the steel sheet / scrap volume after pressing) When the trimming waste amount corrected by the volumetric efficiency given by the formula becomes a specified value, the trimming waste is started to be pressed. Is provided.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram illustrating a configuration example of a trimming waste press processing apparatus according to an embodiment of the present invention.

The present apparatus guides a side trimmer 2 supported by a rotary drive mechanism (not shown) for trimming a steel sheet 1 which is guided and guided by a guide roll (not shown) and trimming waste generated by the trimming to a press chamber 16. A chute 12, a hydraulic cylinder 11 movably provided with a piston 14 for pressing trimming debris, and a servo valve 13 for adjusting the inflow and outflow of hydraulic oil via a pipe 15 for controlling the movement of the piston 14. , Measuring wheel 3
A PG (pulse generator) unit 4 that converts the rotation speed of the steel plate 1 into pulse information and outputs the length information of the steel plate 1 as a pulse signal, a system 10 that generates a control signal to be given to a servo valve 13, and the like. The system includes an input device 5 for giving necessary information and commands to the system 10 and a display device 6 for displaying and outputting necessary information to an operator. Note that the unloading mechanism is not shown in FIG.
The front surface of the press chamber 16 is formed of a plate material formed of a transparent resin material or the like from which a scrap lump after the press processing can be visually observed. A scale indicating the volume of the scrap mass after the treatment is attached.

The input device 5 is provided by an input device such as a keyboard or a mouse, and the display device 6 is provided by a CR.
This can be realized by a display device such as a liquid crystal display (T) or a liquid crystal display.

Further, the system 10 includes a calculating means 7 for performing various calculations, a control means 8 for generating a control signal, and
A storage unit 9 for storing various information described later is provided. The calculating means 7 and the control means 8
For example, it can be realized by an electronic device such as a ROM that stores an operation program, a CPU that performs a predetermined operation according to the operation program, and a RAM that functions as a work area, and the storage unit 9 is realized by a hard disk device or a flash memory. it can.

Therefore, the components including the input device 5, the display device 6, and the system 10 can be realized by one information processing device such as a personal computer or a workstation having an interface function with an external signal. .

The press mechanism includes a servo valve 13, which operates based on a control signal, a pipe 15, a hydraulic cylinder 11 having a movable piston 14, and a press chamber 16.

Next, the operation of the apparatus shown in FIG. 1 will be described with reference to FIG. First, the concept of "volume efficiency" which is a correction coefficient necessary for the description of the operation will be described.

"Volume efficiency" is a value determined by the steel type and actual volume of trimming waste. The volume efficiency is obtained by the following equation (1).

[0020]

(Equation 1) Here, the numerator “the true volume of the steel sheet” on the right side of Equation 1 means the actual volume of the steel sheet. Therefore, if the sheet thickness, width, and length of the trimming waste are known, it can be obtained by the calculation of “sheet thickness × width × length”. The thickness and width are the thickness of the steel plate,
The difference between the width of the steel sheet before trimming and the width of the steel sheet after trimming is assumed to be predetermined. The length is obtained, for example, by measurement using a measurement wheel.

Next, the denominator “scrap volume after pressing” on the right side of Equation 1 is a volume after pressing a steel sheet having a volume indicated by a numerator, and varies depending on the type of steel and the actual volume of the pressing target. Becomes Therefore, the “scrap volume after pressing” needs to be obtained in advance.

Since voids are present in the scrap mass after the press treatment, the denominator on the right side of the equation 1 is larger than the numerator, and the volume efficiency is smaller than "1". If there are no voids in the scrap after pressing, the volumetric efficiency is “1”. Since the existence state of such a void portion changes depending on the steel type and the actual volume of the steel plate to be pressed, the volume efficiency varies depending on the steel type and the actual volume of the steel plate to be pressed. Therefore, the volumetric efficiency means a kind of filling rate indicating how much the steel sheet to be pressed is filled in the scrap mass after the pressing.

FIG. 3 shows two types of steel plates, "SUS30".
4 "and" SUS430 "are shown. As shown in FIG. 3, the volume efficiency when the actual volume V of the steel type “SUS430” is equal to or less than “0.030 (m ³ )” is “α”, and the volume efficiency in other cases is expressed. Thus, it can be seen that the volumetric efficiency is a correction coefficient determined by the type of steel and the actual volume to be pressed.

In step S100 of FIG. 2, first, the operator operates the input device 5 to input parameters. The parameters to be input here include the steel type, thickness, width of trimming waste, and, if known in advance, volumetric efficiency information of the steel plate to be subjected to press processing by the present apparatus.

In the present embodiment, as an example, a description will be given of a process assuming a case where steel plates of different steel types are trimmed one after another. The order of trimming and the steel type of the steel plate to be trimmed are associated with each other. Such information is also input so as to be stored in the storage means 9. Of course, it is needless to say that the present invention can be applied to a case where a plurality of steel plates of the same steel type are trimmed.

Incidentally, the parameters given via the input device 5 are stored in the storage means 9, and an example of the stored state is shown in FIG. As shown in FIG. 5, information on steel type, thickness, width of trimming waste, and volumetric efficiency is stored for each steel type.

Next, proceeding to step S110, if there is a steel sheet for which the volume efficiency has not been determined, an instruction to select the volume efficiency measurement mode is given via the input device 5.
If the volume efficiency measurement mode is not selected, the process proceeds to step S150.

When the volume efficiency measurement mode is selected, the volume efficiency is measured (step S150). Although not shown in FIG. 1, it is assumed that a cutter for cutting trimming waste to a desired length is provided downstream of the side trimmer 2. The operator drives the cutter to cut trimming debris to a desired length.

The calculating means 7 obtains, from the storage means 9, the thickness and the trimmed width of the steel sheet whose volumetric efficiency is to be measured, and further, based on the output signal from the PG section, obtains the thickness of the steel sheet. The length is obtained, and a value corresponding to the numerator on the right side of Expression 1 is obtained by an operation of “thickness × width of trimming waste × length”. Next, when the operator gives a press forced operation command via the input device 5, the control means 8 operates the servo valve 13 to adjust the inflow / outflow amount of the hydraulic oil, and pushes down the piston 14 to perform the press processing. Control signal to the servo valve 13 so that the piston 14 is returned to the original position.
Is given to the servo valve 13.

The volume of the scrap mass pressed by such a forced pressing process can be determined by the scale provided on the front surface of the press chamber 16. This volume is given by Equation 1
When the operator gives this value via the input device 5, the calculating means 7 calculates the volume efficiency according to the equation 1 and stores it in the storage means 9. The calculated volume efficiency is displayed on the display device 6 by the calculating means 7 so that the operator determines whether or not sufficient volume efficiency information has been obtained. If it is determined that the information on the volume efficiency is not sufficiently obtained, the cutter is operated to change the actual volume corresponding to the numerator on the right-hand side of Expression 1 and acquire the information on the volume efficiency.

In step S130, it is determined whether or not the acquisition of the volumetric efficiency information has been completed. If the acquisition has been completed, the process proceeds to step S150. If not, the process proceeds to step S140. The steel type is changed, the volume efficiency is measured again, and the acquisition of the volume efficiency information is continued.

In step S150, information on the volume efficiency of the steel sheet to be subjected to the press processing has already been obtained.
The processing which is a main part of the present invention is performed. First, the arithmetic means 7
Calculates the length of the trimming waste from the output signal from the PG unit 4, and further stores the thickness of the steel plate from the storage unit 9,
Information on the width of the trimming waste is obtained, and the volume yi of the trimming waste of the steel type i (i is a variable representing the steel type) is calculated by an operation of “thickness × width of trimming waste × length”.

Next, in step S170, the arithmetic means 7 divides the volume yi of the trimming debris of the steel type i by the corresponding volume efficiency i to obtain the trimmed debris amount x after correction. For example, with reference to FIG. 3, when the steel type is “SUS304” and yi is “0.035 (m ³ )”, the volumetric efficiency is “0.90α”. "0.035 / 0.90α".

Such an operation is performed for each steel type, and the trimming waste amount after correction is added.
The expression defining the operation performed by the arithmetic means 7 in can be expressed as the following Expression 2.

[0035]

(Equation 2) Then, as shown in step S180, as long as the value (x) on the left side of Expression 2 is less than the predetermined value z, the processing in steps S150 and S170 is continued.
However, if it is determined that the value (x) on the left side of Expression 2 is equal to or greater than the predetermined value z, the control unit 9 is activated in step S200.

Then, the control means 9 gives a control signal to the servo valve 13 so that the servo valve 13 operates to adjust the inflow / outflow amount of the working oil, push down the piston 14 and perform the pressing process. Then, the press processing of trimming waste of steel sheets of a plurality of steel types is started.

Further, the control means 9 gives a control signal for pushing the piston 14 to the original position to the servo valve 13 and ends the press processing. The operator operates the unshown unloading mechanism to unload the scrap after the press processing.

As described above, the actual volume of the trimming waste of the steel sheet is determined by taking into account the value obtained by correcting the actual volume by using the volume efficiency, which is a correction coefficient that determines what value will be obtained after pressing. By determining the timing of the execution of the press process, a scrap having a desired press volume can be obtained, which leads to an improvement in unloading efficiency.

According to the present invention, even when steel sheets of a plurality of steel types are mixed, it is possible to perform a pressing process so that a scrap having a desired press volume can be obtained.

FIG. 4 is an explanatory diagram comparing the effect of the present invention with the method of performing a press process when the trimming waste reaches a predetermined amount as in the conventional case. In this example, two steel types “SUS304” and “SUS430”
3 shows troubles occurring when the trimming waste is subjected to press processing and the carry-out efficiency (“the carry-out amount / the carry-out number”).
Here, the trouble means, for example, that the components of the apparatus were damaged when unloading the press-processed scrap, and the value of the unloading efficiency was set to “1.0” according to the conventional method. I have. FIG. 6 shows two types of steel “S
The thickness, the width of the trimming waste, and the length of the trimming waste are shown for US304 and SUS430.

According to the conventional method, the number of troubles was 3 (times / month), but according to the present invention, no troubles were found. Further, according to the conventional method, the unloading efficiency is “1.
According to the present invention, "0" was changed to "1.15", and according to the present invention, it is possible to carry out the unloading work smoothly and improve the unloading efficiency.

[0042]

As described above, according to the first or second aspect of the present invention, the correction coefficient (volume efficiency) determined by the steel type and the actual volume of the steel sheet is determined in advance, and the correction coefficient for each steel type is determined. The actual volume of the trimming waste is obtained, the actual volume of the trimming waste for each steel type is corrected by the corresponding correction coefficient, and further, the total value of the corrected actual volume for each steel type is obtained, and the total value is a predetermined value. When this is the case, since the execution of the press processing of the trimming waste is started, it is possible to smoothly carry out the work of carrying out the press processing of the trimming waste of a plurality of steel types, thereby improving the unloading efficiency, a method and an apparatus. Can be realized.

Further, according to the present invention, even when steel sheets of a plurality of steel types are mixed, it is possible to perform a pressing process so that a scrap having a desired press volume can be obtained. In addition, according to the third aspect of the present invention, in order to obtain a predetermined volume and shape after pressing using equipment for pressing and processing trimming waste of a steel sheet, "volume efficiency = (true volume of steel sheet / pressing When the amount of trimming waste corrected by the volume efficiency given by the following formula becomes the specified value, the trimming waste press starts, so that the trimmed waste of a plurality of steel types is unloaded. The work can be carried out smoothly and the carrying-out efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an apparatus for pressing trimming waste according to an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the press processing device for trimming waste.

FIG. 3 is an explanatory diagram showing an example of a volume efficiency.

FIG. 4 is an explanatory diagram of an effect of the present invention.

FIG. 5 is an explanatory diagram of storage contents of a storage unit.

FIG. 6 is an explanatory diagram of an effect of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Steel plate 2 Side trimmer 3 Measurement wheel 4 PG (pulse generator) part 5 Input device 6 Display device 7 Calculation means 8 Control means 9 Storage means 10 System 11 Hydraulic cylinder 12 Chute 13 Servo valve 14 Piston 15 Piping 16 Press room

Claims (3)

[Claims] 1. A method of press-treating trimming waste generated by trimming one or more types of steel plates, wherein a correction coefficient (volume efficiency) determined by the steel type and the actual volume of the steel plate to be pressed is determined in advance. Determining the actual volume of the trimming debris for each steel type, correcting the actual volume of the trimming debris for each steel type with a corresponding correction coefficient, and summing the corrected actual volume for each steel type. And a step of starting the execution of the trimming debris press processing when the total value becomes equal to or greater than a predetermined value. 2. An apparatus for press-treating trimming waste generated by trimming at least one type of steel sheet, wherein a correction coefficient (volume efficiency) determined by the steel type and the actual volume of the steel sheet to be pressed is stored. Storage means to be stored, processing for obtaining the actual volume of trimming waste for each steel type, processing for correcting the actual volume of trimming waste for each steel type with a corresponding correction coefficient,
A calculating means for performing a process for calculating a total value of the corrected actual volumes for each steel type; and a press mechanism for performing a pressing process for trimming waste when the total value obtained by the calculating means is equal to or greater than a predetermined value. And a control unit for starting the press operation of the above. 3. Using a facility that presses and treats trimming waste from a steel sheet to obtain a predetermined volume and shape after pressing, “volume efficiency = (true volume of steel sheet / scrap volume after pressing)” A trimming waste press processing method, wherein the trimming waste pressing is started when the trimming waste amount corrected by the volumetric efficiency given by the following formula becomes a specified value.