JP3626515B2 - Continuous press machine - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a continuous press apparatus in which a press facility is installed and various press operations are continuously performed.
[0002]
[Prior art]
When down-loop equipment is installed on the front and rear surfaces of the press equipment, the press drive device is often a VS motor, and the process line often adopts a DC variable speed control device or an AC variable speed control device. The characteristics are very different. Therefore, it is necessary to make the loop depth so as to absorb this difference in acceleration / deceleration characteristics.
[0003]
For example, when the line speed is about 60 mpm and the number of presses is 400 spm (shot / min), a loop depth of about 2 m is required due to the difference in acceleration / deceleration characteristics. When a plate thickness of 0.35 mm, for example, is passed at this loop depth, a fluttering phenomenon of the passing plate material occurs, and this causes defects such as hip folding mainly in the loop, so the press speed is 50% of the required capacity. It is forced to pass through (about 200 spm).
Further, when trying to pass the plate at about 200 spm, it is necessary to set the loop depth to 300 mm or less in order to prevent hip folding caused by the fluttering in the experimental results.
[0004]
In addition, a general press line (a line that is usually completed with one or several presses to solve the above-mentioned conflicting problems) generally has an S as shown in FIG. Although a character loop is provided, there are various problems such as an increase in the line length in order to satisfy the various conditions of the process line.
[0005]
[Problems to be solved by the invention]
In the present invention, when press equipment is installed in the process line and various press operations are performed, fluttering of the sheet material that occurs from intermittent operation of the press equipment and continuous operation of the process line is prevented, and defects such as hip breakage are generated. The aim is to make both the use of the press equipment and the ability of the press equipment to the maximum possible.
[0006]
[Means for Solving the Problems]
A feature of the present invention is that a sheet feeding material generated from intermittent operation of a press facility and continuous operation of the process line when various press operations are performed by installing a press facility in a process line having a coil unwinding facility and a winding facility. In order to prevent the fluttering phenomenon of the press equipment, an upper loop equipment and a down loop equipment are provided on the front and rear surfaces of the press equipment, respectively, and a pinch roll is interposed so that both the upper loop and the down loop can be surely cut. The device is such that each loop depth and loop height can be controlled by the front and rear bridle devices.
[0007]
That is, the gist of the present invention is to install a press facility in a continuous process line having a steel sheet unwinding facility and a winding facility, and install a set of upper loops and down loops on the front and rear surfaces of the press facility, respectively. A pinch roll is installed between each down loop and upper loop, a sensor for detecting the loop amount is installed in each of the upper loop and the down loop, and the speed of the press facility or the down loop is detected based on the detected amount of the sensor. The continuous press apparatus is characterized in that a control device for controlling the incoming speed or the outgoing speed of the down loop is installed, and a control device for controlling the speed of the pinch roll is installed based on the detected amount of the upper loop.
[0008]
【Example】
Hereinafter, the present invention will be described in detail based on an embodiment with reference to the drawings.
In FIG. 1, reference numeral 1 denotes an entry-side bridle, which is an equipment for applying tension on the entry-side processing equipment (hereinafter abbreviated as entry-side equipment) side to the press equipment of a continuous process line. 2 is a guide roll that guides the steel sheet that has come out of the entry side flydle 1, 3 is an entry side down loop facility for absorbing the acceleration / deceleration characteristic difference between a press facility 8 and an entry side facility side drive device, which will be described later, An inlet upper loop facility following the inlet side down loop facility 3 is used to absorb feeding error of the sheet passing material resulting from the intermittent operation of the press facility 8 and the continuous operation of the process line. And a pinch roll 4 are interposed to cut the edge between the entrance side down loop facility 3. Further, the entry-side upper loop facility 5 has a guide that moves up and down with an air cylinder or the like to form an upper loop. Reference numeral 6 denotes a guide for guiding the plate material exiting from the entry-side upper loop facility 5.
[0009]
Reference numeral 8 denotes a press facility installed for various press processes, and is driven by a driving device 7. 9 is a plate feeding device connected to the press facility 8 by a belt, and 11 is an outlet upper loop facility for absorbing a feeding error of the plate material caused by intermittent operation of the press facility 8 and continuous operation of the process line. It is. This exit-side upper loop facility 11 has a guide that moves up and down with an air cylinder or the like in the same manner as the entrance side to form an upper loop. Reference numeral 10 denotes a guide roll for guiding the steel sheet from the plate feeding device 9 to the outlet upper loop equipment 11, and 12 denotes a pinch for cutting the edge of the outlet upper loop equipment 11 and the subsequent outlet down loop equipment 13. A roll 14 is a guide roll for guiding the steel plate to the outlet bridle 15. The delivery bridle 15 is equipment for applying tension on the delivery processing equipment (hereinafter abbreviated as delivery equipment) side to the press equipment of the continuous process line.
[0010]
Further, 16, 17, 18 and 19 are predetermined positions for detecting the respective loop amounts in the above-mentioned entry / exit upper loop facilities 5, 11 and the entry / exit down loop facilities 3, 13. It is a sensor installed in. As the sensor, for example, a photoelectric tube composed of a light projecting unit and a light receiving unit can be employed.
[0011]
Next, the operation of the illustrated apparatus will be described.
The entry-side down-loop facility 3 stores the steel plate length corresponding to the acceleration / deceleration characteristic difference between the press facility 8 and the entry-side facility and the loop control amount in the entry-side upper loop facility 5. The control of the loop depth of the entry side down loop facility is accomplished by detecting the depth by the photoelectric tube sensor 16 and changing the speed of the entry side bridle facility 1 when the entry side facility can change the line speed. This is done by changing the speed of the press equipment 8 when the entry side equipment cannot change the line speed due to the furnace equipment or the like.
[0012]
Similarly, the output side down-loop facility 13 stores the plate length corresponding to the acceleration / deceleration characteristic difference between the press facility 8 and the output side facility and the loop control amount in the output-side upper loop facility 11. The control of the loop depth of the outgoing side down-loop equipment is performed by detecting the depth by the sensor 17 such as a phototube and changing the speed of the outgoing side bridle equipment 15 when the line speed of the outgoing side equipment can be changed. If the delivery equipment is furnace equipment and the line speed cannot be changed, the speed of the press equipment 8 is changed. These controls are performed by the control device 20.
[0013]
It is desirable to install guide rolls 6 and 10 between the press facility 8 and the upper loop, and to smoothly guide the steel sheet from the upper loop facility 5 to the press 8 facility or from the press facility 8 to the upper loop facility 10. The entrance / exit upper loops 5 and 11 are provided with an appropriate plate on the entrance / exit side of the press facility in order to obtain an accurate plate feed amount by the plate feeder against the error of the feed amount per unit time resulting from the intermittent operation of the press facility. The extra length is necessary and installed for this purpose.
[0014]
The control of the loop height of the entrance / exit upper loop is performed by detecting the height by the photoelectric tube sensors 18 and 19 and changing the speed of the pinch roll 4 or 12 so that the control device 21 falls within a predetermined height range. It is what you do. Note that it is desirable that the plate can be smoothly fed to the exit side of the press facility 8 by a plate feeder 9 connected to the press facility 8 by a belt.
[0015]
The pinch rolls 4 and 12 are made of air cylinders or the like so as not to affect the flutter vibration of the plate material generated from the intermittent operation of the press equipment from the input / output upper loop 5 or 11 to the input / output down loop 3 or 13. The pinch is securely pinched to prevent the steel plate from being bent in the down loop facility 3 or 13.
[0016]
【The invention's effect】
According to the present invention, when performing various press operations, the fluttering phenomenon of the plate material generated from the intermittent operation of the press facility and the continuous operation of the process line can be prevented, and the waist breakage mainly occurring in the down loop can be prevented. Utilizing the capacity of the equipment to the maximum, it is possible to perform accurate plate feeding by the plate feeding device, and there is an effect that accurate press work can be performed at high speed.
[Brief description of the drawings]
FIG. 1 is a diagram showing a process line in which a press facility is installed in an embodiment of the present invention.
FIG. 2 is an explanatory diagram of a commonly used S-shaped loop facility.

Claims (1)

Press equipment is installed in a continuous process line with steel sheet unwinding equipment and winding equipment, and upper loop and down loop pairs are installed on the front and rear surfaces of the press equipment, respectively, between each down loop and upper loop. A pinch roll is installed in each of the upper loop and the down loop, and sensors for detecting the loop amount are installed in each of the upper loop and the down loop. A continuous press apparatus characterized in that a control device for controlling the side speed is installed and a control device for controlling the speed of the pinch roll based on the detected amount of the upper loop.

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