JPS6240921A - Rolling device - Google Patents

Abstract

PURPOSE:To enable the automation of the initial pass of an intermediate material by feeding an intermadiate material between the upper and lower stocks which reached to the constant rolling speed and by constituting to accelerate the intermadiate material upto the constant rolling speed on reaching of the detected tension of the intermadiate material to the reference value. CONSTITUTION:The driving device 17 of roll groups 13-16 is started by a speed control device 19 with the speed reference being outputted from a target speed arithmetic circuit 22 when the upper and lower materials 1, 2 reaches to the constant rolling speed at a press-fitting stand 10 and the actuation of the intermediate stock 3 is commanded from a timing detecting device 27. A tension detector 24 detects the tension of the intermadiate stock 3 rolled with pressure fitting and a tension control device 25 detects the prescribed reference tension, then the target speed in constant rolling is outputted from the circuit 22 via the device 27 and simultaneously the speed correction from the device 25. Thereafter the device 19 accelerates the intermediate stock 3 upto the constant rolling speed according to the target speed inputted by an adder 23. The initial pass of the intermediate stock between the plate stocks can thus be automated.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a rolling device for stacking and crimping plate materials such as steel plates in multiple layers, and particularly for rolling an intermediate material for adhering plate materials between the plate materials. This invention relates to an automated rolling machine.

(Prior art and its problems) The configuration of this type of conventional rolling mill is shown in FIG.

In FIG. 5, both the upper material 1 and the lower material 2 to be crimped and rolled, and the intermediate material 3 such as a plus deck material to which the lower material 1 and 2 are bonded by heating, are each tension-controlled. Rewind I14. ．． The sheet is rewound from 5°6, passes through an entry side roller roll 7.8 and intermediate material pinch rolls 9, each of which has a speed controlled, and is passed through a speed-controlled crimping stand 10 for overlapping crimping and rolling. is,
Furthermore, it passes through an exit side priddle roll 11 whose speed is controlled and is wound up by a winder 12. At that time, the speed of the intermediate material 3 (hereinafter referred to as intermediate material speed) is determined by the first pinch roll 13 provided between the unwinding machine 6 and the intermediate material pinch roll 9, the first priddle roll 14, It is controlled by the rotational speed of the second prydle roll 15 and the second prydle roll 16.

The roll groups 13 to 16 for controlling the speed of the intermediate material are rotationally driven by the same drive device 17, and the resulting speed of the intermediate material is detected by the intermediate material speed detector 18 and fed back to the speed control device 19. The speed control device 19 is configured to feed back intermediate material speed and target speed setting device 20.
The intermediate material speed is compared with the target speed input by the operator via the target speed calculation circuit 21, and the driving bag @17 is controlled so as to make the intermediate material speed equal to the target speed.

In such a conventional apparatus, the overlapping rolling amount -4= At the beginning, only the upper material 1 and the lower material 2 are passed to the crimping stand 10 at a predetermined low speed. Next, the operator inserts the intermediate material 3 so as to sandwich it between the upper material 1 and the lower material 2, and overlaps them at a low speed. Start rolling. Then, while the slack in the intermediate material 3 provided on the entry side of the intermediate material pinch roller 9 is being removed, the operator starts the intermediate material 3 and accelerates the intermediate material 3 while operating the target value setting device 20. Then, when there is no slack, remove the intermediate material 3.
Adjust so that the top and bottom materials 1 and 2 have the same speed.

After confirming that overlapping rolling is being performed reliably at low speed, the operator accelerates the entire line to a predetermined steady rolling speed and begins steady rolling. Further, in the above process, the operator finely adjusts the speed setting device 18 from beginning to end and performs tension control so that an appropriate tension is always applied to the intermediate material 3.

In this way, in the conventional rolling equipment, the initial threading operation of the intermediate material 3 must be done manually by the operator.
There is a problem in that the operator is at great operational risk, and if the operator is not skilled, the thickness of the intermediate material may become uneven, resulting in poor yield and reduced work efficiency.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a rolling machine that can automatically perform the initial threading operation of an intermediate material without relying on manual operations by an operator.

[Summary of the invention]

In order to achieve the above object, the first invention includes a rolling speed detection means for detecting the rolling speed in a crimping stand, and outputs an intermediate material start command upon detecting that the rolling speed has reached a predetermined reference speed. a start timing detection means for detecting the tension of the intermediate material; a re-acceleration time detection means for detecting that the tension has reached a predetermined reference tension and outputting an intermediate material re-acceleration command; A target speed that outputs a first target speed that is lower than the rolling speed in response to an intermediate material start command, and outputs a second target speed that is approximately equal to the rolling speed in response to the intermediate material re-acceleration command. An output means is provided, and the intermediate material speed is controlled in accordance with the target speed from the target speed output means.

In addition to the configuration of the first invention, a second invention provides a target speed output means for correcting the target speed outputted from the target speed output means based on speed correction (2), and a target speed output means for correcting the target speed outputted from the target speed output means based on the speed correction ■; The gist is that tension control means is installed to calculate the speed correction amount and output to the target speed correction means so that the tension is maintained at a predetermined target tension.

[Embodiments of the invention]

The present invention will be explained below with reference to embodiments shown in FIGS. 1 to 4.

FIG. 1 is a configuration diagram showing an embodiment of a rolling apparatus according to the present invention. Components that are the same as those in FIG. 5 are denoted by the same reference numerals, and explanations thereof will be omitted.

In FIG. 1, the target speed calculation circuit 22 calculates a predetermined speed difference from the target speed set by the operator according to the output voltage of the target speed setter 20 operated by the operator.
-J calculates a low speed, and when receiving an intermediate material start command described later, outputs the calculated low speed to the intermediate material speed control device 19 as a target speed during initial threading, and also receives a re-acceleration command described later. The target speed set by the pull operator is output to the intermediate material speed control device 19 as the target speed during steady rolling. Here, the target speed during steady rolling is usually set to the same speed as the steady rolling speed in the crimping stand 10. Further, the speed difference is set depending on the thickness of the intermediate material 3, the control characteristics of the intermediate material speed control device 19, and the like. Incidentally, the operator may set both the steady rolling target speed and the initial sheet passing target speed using the target speed setting device 20, and store these in the target speed calculation circuit 22.

The target speed output from the target speed calculation circuit 22 is input to the intermediate material speed control device 19 via the adder 23.

The adder 23 adds a speed correction amount, which will be described later, to the target speed.

A tension detector 24 that detects the tension of the intermediate material 3 is provided downstream of the roll groups 13 to 16 that control the intermediate material speed,
Is the tension detection signal from this tension detector 24 a tension control device? ! ? 25. The tension control device 25 functions as a tension control means, and together with a timing detection device 27, which will be described later, also functions as a re-acceleration timing detection means. That is, the tension control device 25
When it detects that the tension detection value has risen above a predetermined reference tension, it outputs a rise detection signal to the timing detection device 27, and the timing detection device 27 immediately issues a tension control start command upon receiving the rise detection signal. Output to device 25. Upon receiving the tension control start command t-J, the tension control device 25 adjusts the speed based on the tension deviation in order to adjust the intermediate material speed so that the tension deviation between the detected tension value and the target tension is minimized. A correction amount is calculated and outputted to the adder 23. □ The crimping stand 10 is provided with a rolling speed detector 28 for detecting the rolling speed, and the rolling speed detection signal is input to the timing detecting device 27. When the timing detection device 27 detects that the rolling speed detection value from the rolling speed detector 28 has reached the steady rolling speed, it sends the intermediate material start command to the target speed calculation circuit 22, and then performs the above-mentioned J: When the rising detection signal is input manually from the tension control device [25], the tension control start signal is sent back to the tension control device 25, and the intermediate material re-acceleration command is sent to the target speed calculation circuit 22.

Next, the operation of this embodiment will be explained.

First, the operation during the initial threading of the intermediate material 3 will be explained.

FIG. 2 is a speed pattern diagram illustrating speed control during initial threading of the intermediate material 3 according to this embodiment.

In FIGS. 1 and 2, at the start of rolling, only the upper material 1 and the lower material 2 are passed through the crimping stand 10, and the upper material 1,
Rolling of only the base material 2 is started (time t1). When the rolling speed (FIG. 2a) increases and reaches the steady rolling speed, the intermediate material start command is output from the timing detection device 27 to the target speed calculation circuit 22, and the target speed calculation circuit 22 returns to the initial speed. The speed standard for sheet threading is output (time 1 "2). At this time, since the speed correction amount has not yet been output from the tension control device 25, the target speed for sheet threading at the initial stage is unchanged from the speed control device. 19.

In response to this, the speed control device 19 starts the roll groups 13 to 16 via the drive load 17 (time t3), and as shown in graph b, the intermediate material 3 is transferred to the same number as the initial threading speed standard of 6. and accelerate.

J: Also, the pinch roll 9 for intermediate material is started around the time when the intermediate material 3 starts to be conveyed, and the tip of the intermediate material 3 is placed on top, the bottom material 1,
When the intermediate material 3 is inserted between the upper and lower materials 1 and 2, the pressing and rolling of the upper and lower materials 1 and 2 and the intermediate material 3 is started. Since this crimping rolling proceeds at the above-mentioned steady rolling speed, the slack of the intermediate material 3 provided on the entry side of the pinch roll 9 for intermediate material disappears, and during this time the intermediate material speed decreases to the above-mentioned initial threading time. Reaching 1tl speed mark (
Time 14>. Since this target speed at the time of initial sheet passing is lower than the rolling speed of the crimping stand 10 at this time, that is, the steady rolling speed, the intermediate material 3 is moved according to the speed difference α when the slack is eliminated. It is pulled from the crimping stand 10 and its tension suddenly rises. In other words, the rise and fall of this tension serves as an indicator that the intermediate material 3 has been reliably passed through the crimping stand 10. The tension control device 25 outputs the rise detection signal to the timing detection device 27 when the tension control device 25 detects the rise based on whether the tension) has reached a predetermined reference tension or more. As a result, the intermediate material re-acceleration command is sent from the timing detection device 27 to the target speed calculation circuit 22, and the target speed during steady rolling is outputted from the target speed calculation circuit 22.

At the same time, the tension control start command is sent from the timing detection device 27 to the tension control device 25.
5 outputs a speed correction amount corresponding to the tension deviation. The steady rolling target speed and the speed correction amount are added by the adder 23 and input to the speed control device 19, and the speed control device 19 re-accelerates the intermediate material 3 according to the input target speed (time 1゛5). In other words, the speed control device 19
The intermediate material 3 was accelerated toward the steady rolling speed while controlling the tension so that the tension of the intermediate material 3 approached the target tension, and the intermediate material 3 was accelerated to approximately the steady rolling speed. After (time t6), the process shifts to speed control during steady rolling. In this way, the initial threading of the intermediate material 3 is carried out automatically and smoothly.

Next, the operation during steady rolling will be explained.

FIG. 3 is a time chart explaining the speed control of the intermediate material 3 during steady rolling according to this embodiment, and FIG. 3(A) shows the relationship between the tension of the intermediate material 3 and the target tension. (B) shows the holding operation of the speed correction amount performed inside the tension control device 25, and (C) of the same figure shows the state of the speed correction amount.

As shown in FIG. 3, when a target tension is given, the tension control device 25 sets a tension control range of a predetermined width centered on the target tension as shown by hatching, and sets the upper limit of the tension control range to the target tension. The upper limit value and lower limit value are determined as the target tension lower limit value. When the tension of the intermediate material 3 is larger than the target tension upper limit value, the tension control device 25 calculates and outputs a speed correction amount corresponding to the tension deviation, whereby the intermediate material 3 is accelerated and its tension is lowered. mi controlled. As a result, when the tension falls and enters the tension control range I (time t
7), the tension control device 26 holds the speed correction amount at that time.

As a result, the speed correction amount is kept constant regardless of changes in the tension saw, so that the tension will someday deviate from either the tension saw reference upper limit value or lower limit value. For example, if the tension becomes equal to or less than the plug tension lower limit value (time t8), the tension control device 25 releases the holding of the speed correction amount and restarts the calculation process to calculate the speed correction amount corresponding to the tension deviation again. -ru. As a result, the intermediate material 3 is decelerated and its tension is controlled in the upward direction.

In this way, the tension control device 25 maintains the speed correction amount when the tension is within the tension control range;
If the tension deviates from the tension control range, control is executed to output a speed correction amount according to the tension deviation, accelerate or decelerate the intermediate material 3, and pull the tension back into the tension control range. As a result, the intermediate material 3 is threaded while its tension is almost always kept within the tension control range, and as a result, the thickness of the intermediate material 3 is kept almost uniform, improving the product yield. .

FIG. 4 is a block diagram showing a modification of the embodiment shown in FIG. 1, and the same parts as in FIG. 1 are designated by the same reference numerals.

In this modification, when the timing detection device 27 receives the rising detection signal from the tension control device 25, it outputs only the intermediate material re-acceleration command, whereby the intermediate material is re-accelerated and its speed is changed to the steady rolling speed. When a predetermined ratio is reached, for example when they become equal, the tension control meter (i command) is output.Therefore, while the intermediate material 3 is being re-accelerated, tension control is not being performed, but the re-acceleration There is no problem if this is done quickly, and the initial threading of the intermediate material 3 can be carried out smoothly even in this manner.

〔Effect of the invention〕

As explained above, if the first and second inventions have J:
The intermediate material is passed between the plates at a speed lower than the rolling speed, and the intermediate material is accelerated to the rolling speed after detecting that the intermediate material has been reliably threaded from the rise of tension in the intermediate material. Therefore, the initial threading of the intermediate material can be performed automatically without relying on manual operations by an operator.

Furthermore, according to the second invention, in addition to the speed control described above, tension control is also performed to maintain the tension of the intermediate material at a predetermined target tension, so the operator does not need to perform tension control, and the product quality is improved. Yield is also improved.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of a rolling apparatus according to the present invention, FIG. 2 is a diagram illustrating speed control during initial sheet passing of an intermediate material according to the same embodiment, and FIG. 3 is a diagram showing the same embodiment. Fig. 4 is a diagram showing the operation during steady rolling of the embodiment, and Fig. 4 is a configuration diagram showing a modification of the same embodiment.
FIG. 5 is a configuration diagram showing a conventional rolling apparatus. 1... How many materials, 2... Base material, 3... Intermediate material, 4...
- Rewinding machine for upper material 1, 5... Rewinding machine for lower material 2, 6.
... Rewinding machine for intermediate material 3, 7... Entry side priddle roll for upper material 1, 8... Entry side priddle roll for lower material 2,
9... Pinch roll for intermediate material, 10... Crimping stand, 13... First pinch roll, 14... First prydle roll, 15... Second prydle roll, 16... - Second pinch roll, 17... Drive device, 18... Intermediate material speed detector, 19... Speed control device, 20... Target speed setter, 22... Target speed calculation circuit, 23... Adder, 24... Tension detector, 2
5... Tension control device, 26... Target tension setting device, 2
7... Timing detection device, 28... Rolling speed detector. Applicant's agent Sato - Male%3 Figure

Claims (1)

[Scope of Claims] 1. A crimping stand for overlapping and crimping a plurality of plate materials, a plate conveyance mechanism for feeding the respective plate materials to the crimping stand, and an intermediate for bonding plate materials between the plate materials fed to the crimping stand. An intermediate material transport mechanism that feeds materials;
and an intermediate material speed control means for driving and controlling the intermediate material transport mechanism so that the speed of the intermediate material matches the input target speed, the rolling device comprising: a rolling device that detects the rolling speed of the plate material in the crimping stand; a speed detecting means; a start timing detecting means for detecting that the rolling speed detected by the rolling speed detecting means has reached a predetermined reference speed and outputting an intermediate material start command; and detecting the tension of the intermediate material. a tension detection means; a re-acceleration time detection means for detecting that the tension detected by the tension detection means has reached a predetermined reference tension and outputting an intermediate material re-acceleration command; and an intermediate material from the start time detection means. In response to the material start command, a first target speed lower than the rolling speed is output to the intermediate material speed control means, and in response to the intermediate material acceleration command from the re-acceleration time detection means, the rolling speed is increased. A rolling apparatus comprising: target speed output means for outputting substantially equal second target speeds to the intermediate material speed control means. 2. A crimping stand for overlapping and crimping a plurality of plate materials, a plate conveyance mechanism for feeding the respective plate materials to the crimping stand, and an intermediate material conveyance for feeding an intermediate material for bonding the plate materials between the plate materials fed to the crimping stand. mechanism and
and an intermediate material speed control means for driving and controlling the intermediate material transport mechanism so that the speed of the intermediate material matches the input target speed, the rolling device comprising: a rolling device that detects the rolling speed of the plate material in the crimping stand; a speed detection means; a start timing detection means for detecting that the rolling speed detected by the rolling speed detection means has reached a predetermined reference speed and outputting an intermediate material start command; and detecting the tension of the intermediate material. tension detection means; re-acceleration time detection means for detecting that the tension detected by the tension detection means has reached a predetermined reference tension and outputting an intermediate material re-acceleration command; and an intermediate point from the start time detection means. In response to the material start command, a first target speed lower than the rolling speed is output to the intermediate material speed control means, and in response to the intermediate material re-acceleration command from the re-acceleration time detection means, the rolling speed is adjusted. target speed output means for outputting a second target speed substantially equal to to the intermediate material speed control means; target speed correction means for correcting the target speed output from the target speed output means based on the speed correction amount; and tension control means for calculating the speed correction amount based on the tension detected by the tension detector so that the tension is approximately maintained at a predetermined target tension and outputting it to the target speed correction means. A rolling device featuring: