JPH0321282B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to an internal bead treatment device for welded steel pipes after cutting them in a pipe production line, and the device is used to discharge the steel pipes in a direction perpendicular to the transport line after cutting and transporting the steel pipes. This is an automatic internal bead processing device that can be applied to lines. (Prior Art) A conventional internal bead automatic waste processing apparatus is described in Japanese Utility Model Application Publication No. 52-34493. This device has cutting blades with clamping parts placed opposite each other, a bead cutting clamping device that faces the pipe conveyance line and is movable back and forth, a cutting device for turning beads into scraps, and a bead feeding device into the cutting device. This is an automatic internal bead scraping processing device configured with a bead scraping device consisting of a feed roll, and a bead cutting and holding device is arranged in front of the bead scraping device with respect to the direction of the pipe conveyance line. (Problems to be Solved by the Invention) However, the above conventional method has the following drawbacks. (a) A bead cutting and clamping device cuts the bead, pinches it, and shifts it to the bead scrapping device (waste processing line). However, since only one end of the bead is pinched and shifted, if the bead shape is bad due to bending, etc., the bead is moved to the bead scrapping device. The bead does not fit securely into the bead feed roll. (b) After the cut tube is discharged from the conveyance line, it does not stop at a fixed position on the discharge table, causing the position of the tube to deviate from the position of the bead scraping device.
Beads do not enter the bead feed roll of the bead scraping device, and even if they do enter the bead feed roll, the beads inside the pipe are pulled out, and the beads get caught during the scraping process, causing them to be cut midway or to the dispensing table. Problems occur when transporting pipes at the top. (c) The bead may get caught on the tube inner surface burr that occurs when cutting the tube at the end of the tube during bead removal, causing the bead to be cut midway, or
Problems occur when transporting the tube on the dispensing table. (d) The cut pipe (leading pipe) must be transported to the rear surface at a speed faster than the pipe-making speed, and the necessary distance for cutting the bead must be maintained between it and the uncut pipe (trailing pipe). However, if the conveyance force is only due to the friction with the conveyor roll due to the weight of the tube, the necessary constant spacing cannot always be maintained due to the thin walled (light) material of the tube or the bead catching of the burr on the inner surface of the tube. If the spacing is insufficient, the bead will not be cut, and if the spacing is too large, the bead will get caught on the conveying line, resulting in inability to process the bead and causing pipe conveyance problems on the pipe making line. (Means for Solving the Problems) The present invention has been made to eliminate the drawbacks of these conventional methods and devices. It does not enter the bead supply roll during the process of shifting to the bead scraping device. (b) During the process of pulling out the bead inside the pipe, the bead gets caught on the inner surface of the pipe and other equipment. (c) The point that the minimum necessary distance for bead cutting is not constant between the cut pipe (leading pipe) and the uncut pipe (trailing pipe): At the rear of the bead scraping device. Forced bead guide 3: Forcible discharge kicker on the pipe-making conveyance line 4: Stopper and kicker on the discharge table 5: Vibratory bead guide 6: Between the bead scraping device and the rear end of the discharged pipe The present invention provides an automatic internal bead processing device for welded steel pipes, which installs the pinch roll 7 on the pipe conveyance line and reliably processes each bead one by one into waste. The present invention will be explained in detail below based on the embodiment of the apparatus shown in FIGS. 1 to 9. FIG. 1 is an overall plan view of the present invention, and FIG. 2 is a sectional view taken along the line AA in FIG. 1. To explain the arrangement of each device using the overall plan view in FIG. A plurality of forced discharge kickers 4 are installed in the direction of movement of the conveyance line. There is a bead scraping treatment line on the side where the pipes are discharged after cutting, off the pipe making line, and on the scraping treatment line, a bead scraping device 2 and a bead scraping device 2 are installed about halfway between the bead cutting and holding device 1 and the bead forcing guide 3. There is a vibrating bead guide 6 between the bead forcing guide 3 and the dispensing table 9, and a plurality of stoppers and kickers 5 are installed in the dispensing table on the same line in the pipe length direction. Next, the mechanism and operation of each device will be explained. First, the bead cutting and clamping device 1 is
This will be explained with reference to the drawings and FIG. FIG. 6 is a side view of the bead cutting and clamping device 1 taken along the line CC in FIG. 1. The bead 12 is cut and clamped by the cylinder 11 with the cutter and the pincer 13.
is shifted to the bead waste treatment line by the cylinder 11 in a clamped state. Immediately after cutting and clamping, the structure is such that the upper surface of the cutter clip is lowered to prevent it from hitting the following pipe. The bead scraping device 2 will be explained with reference to FIGS. 1, 4, and 5. Figure 4 is the front view, Figure 5 is the first view.
A side view of the bead scraping device 2 is shown in a view taken along the line DD in the figure. Bead 1 shifted to bead waste processing line
2 to bead presser roll 14 by cylinder 18
By the rotation of the bead supply roll 15, the bead 12 is forcibly reduced by the bead cutting roll 1.
Supplied within 6 days. The bead cutting roll 16 is rotated by a drive motor 17. Bead 12
is cut into fine pieces by a bead cutting roll 16. Next, the bead forcing guide 3 will be explained with reference to FIGS. 1 and 8. FIG. 8 is a side view of the bead forced guide 3 taken along the line E--E in FIG. 1. Immediately after the steel pipe with the bead 12 cut off on the pipe-making line passes through the bead forced guide 3, it is forcibly shifted to the bead scraping treatment line almost simultaneously with the shift of the bead cutting and holding device 1 described above. The cylinder 20 shifts the beads 12 to a bead waste processing line while being guided by a bead guide 21. When returning after a shift, the bead guide 21 will interfere with the pipe being transported on the pipe-making line if left as is, so when returning, the mechanism is such that the bead guide 21 is forcibly swung by the cylinder 22 and lowered. There is. Next, the forced payout kicker 4 will be explained with reference to FIGS. 1, 3, and 9. Figure 3 shows F in Figure 1.
- It is a side view of the rope payout table in the F arrow direction view.
FIG. 9 is an enlarged plan view of the forced dispensing kicker 4. A plurality of forced payout kickers 4 are installed on a conveyance table 8. The forced payout kicker 4 is supported on a conveyance table 8, and the conveyance table 8 is tilted toward the payout table 9 side by a cylinder 25, and the pipe being conveyed is paid out to the payout table 9. Almost at the same time, the kicker arm 24 is moved to the cylinder 23. The pipe being conveyed is forcibly delivered into the delivery table 9 by the pipe. Next, the stopper and kicker 5 will be explained with reference to FIGS. 1 and 3. The pipe discharged from the conveyance line into the dispensing table 9 is temporarily stopped during the bead scraping process, and the pipe is kicked to the rear side after the bead scraping process. In this embodiment, a four-toothed star wheel 27 I am going by. The star wheel 27 is rotated by the drive motor 26,
Since this embodiment has four teeth, it is designed to stop after turning 1/4. Next, the vibrating bead guide 6 will be explained with reference to FIGS. 1 and 7. FIG. 7 is a side view of the vibrating bead guide 6 taken along the line BB in FIG. The beads shifted to the bead waste processing line by the bead cutting and clamping device 1 and the bead forcing guide 3 are delivered into the delivery table 9, and when the beads are pulled out from the rope pipe stopped at the stopper and kicker 5 position, the beads are removed. It has the function of centering and giving vibration to the bead. The left and right bead guides 28 are opened and closed by cylinders 31, and the entire vibrating bead guide 6 is supported by a spring 30, and a vibrator 29 is attached to the main body of the vibrating bead guide 6, making the whole vibrating body. ing. Bead 1 shifted to bead waste processing line
2 are focused at the center position of the bead waste treatment line by opening and closing the left and right bead guides 28. Next, the pinch roll 7 will be explained with reference to FIGS. 1 and 2. The pinch rolls 7 are used to pinch the leading pipe and forcibly pull them apart at a constant speed in order to always maintain a constant distance between the leading pipe 32 and the trailing pipe 33 for cutting and holding the bead.
The lower roll 37 is fixed, and the upper roll 36 is moved up and down by the cylinder 34. When the steel pipe cut to a regular length passes through the pinch roll section, the upper roll 36 is pinched downward by the cylinder 34, and after passing, it rises. (Operation of the invention) Next, the operation of the invention will be explained. A steel pipe (preceding pipe) 32 cut into a fixed length by a traveling cutter 38 on the pipe-making line is conveyed by pinch rolls 7 and transport table rolls 8 at a speed faster than the pipe-making speed. Uncut rope pipe (trailing pipe) 33 and leading pipe 3
2, the bead 1 is cut and clamped using the bead cutting and clamping device 1.
2 is cut and clamped. In this state, the leading pipe 32 is conveyed to the rear surface while the bead inside the pipe is removed. Immediately after the rear end of the leading pipe 32 passes the position of the bead forced guide 3, the bead 12 is still clamped by the bead cutting and holding device 1 described above, and the bead cutting and holding device 1 and the bead forced guide 3 almost simultaneously turn the bead into waste. Shift to processing line, bead 12
The bead supply roll 15 of the bead waste processing device 2
carry it inside. On the other hand, after the rear end of the leading pipe 32 passes the position of the bead forced guide 3, the bead cutting and clamping device 1,
At approximately the same timing as the bead forced guide 3 is shifted to the bead waste processing line, the conveyance table roll 8 is tilted toward the dispensing side by the cylinder 25, and further by the forced dispensing kicker 4 supported on the conveyance table roll 8. , is paid out into the payout table 9. The discharged leading pipe 32 is temporarily stopped at the position of the stopper and kicker 5 in the discharge table 9, that is, at the bead waste processing line.
At that time, each device is arranged so that the timing at which the leading pipe 32 stops at the position of the stopper and kicker 5 is almost the same as the timing at which the beads 12 described above are conveyed into the bead supply roll 15 of the bead waste processing device 2. The operation timing has been set. The beads 12 transported to the bead scraping treatment line are centered by the cylinder 31 of the vibrating bead guide 6, which is located between the bead scraping device 2 and the rear end of the discharged leading pipe, as the bead guide 28 is closed. Almost at the same time as the bead guide 28 is closed, the bead 12 on the bead supply roll 15 of the bead scraping device 2 is pressed down by the cylinder 18 by lowering the bead presser roll 14. The rolled bead 12 is forcibly fed into the bead cutting roll 16 by the drive motor 19 of the bead supply roll 15 . The bead 12 that has entered the bead cutting roll 16 is finely divided into scraps by the drive motor 17 of the bead cutting roll 16. During this time, the bead 12 is pulled out from the inside of the preceding pipe 32', but the vibrating bead guide 6 is used to constantly center the bead and vibrate it while being pulled out so that the bead 12 does not catch on burrs at the end of the pipe during the pulling process. I'm there. When the bead waste treatment of the leading pipe 32' is completed, the stopper and kicker 5 rotates to kick the leading pipe 32' to the rear surface, completing one cycle. Meanwhile, each device of each device is connected to the next trailing pipe 3.
It is now ready to process the bead waste in step 3 and has returned to its original position. (Effects of the Invention) The automatic internal bead processing device for welded steel pipes of the present invention has the following effects compared to conventional devices. 1. 100% internal bead waste processing becomes possible, and when problems occur such as when beads cannot be processed, the need for manual troubleshooting personnel is completely eliminated, making it possible to completely rationalize personnel. 2. Since there is no need for troubleshooting personnel, the unsafe work of entering the line to troubleshoot while the line is in operation is completely eliminated. 3. There will be no need to stop pipe production due to inability to process beads or pipe transportation troubles associated with internal bead waste processing equipment, resulting in improved yield and significantly improved productivity.

[Brief explanation of the drawing]

FIG. 1 is an overall plan view of an apparatus according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG. -F arrow view is a side view of the dispensing table, Figure 4 is a front view of the bead scraping device, Figure 5 is a side view of the bead scraping device, and Figure 6 is a side view of the dispensing table.
The figure is a side view of the bead cutting and clamping device, Figure 7 is a side view of the vibrating bead guide taken along the line B-B in Figure 1, Figure 8 is a side view of the bead forced guide, and Figure 9 is the forced removal. FIG. 3 is an enlarged plan view of the kitska. 1: Bead cutting and clamping device, 2: Bead waste processing device, 3: Bead forced guide, 4: Forced discharge kicker, 5: Stopper and kicker, 6: Vibrating bead guide, 7: Pinch roll, 8: Conveyance Table roll, 9: Dispensing table, 10: Cylinder, 11: Cylinder, 12: Bead, 13:
Bead cutter and clip, 14: Bead presser roll, 15: Bead supply roll, 16: Bead cutting roll, 17: Drive motor, 18: Cylinder, 19: Drive motor, 20: Cylinder, 2
1: Bead guide, 22: Cylinder, 23: Cylinder, 24: Kitzker arm, 25: Cylinder, 26: Drive motor, 27: Star wheel, 28: Bead guide, 29: Vibrator, 30: Spring, 31: Cylinder, 3
2: Leading pipe, 33: Trailing pipe, 34: Cylinder, 35: Drive motor, 36: Upper roll,
37: Lower roll, 38: Traveling cutting machine.

Claims (1)

[Claims] 1. A bead cutting and clamping device 1 that can freely move forward and backward in a direction perpendicular to the tube conveyance line is arranged in front of the bead scraping device 2 in the direction of the tube conveyance line, with respect to a bead scraping device 2 located in a line away from the tube conveyance line, Similarly, a bead forcing guide 3 that guides the bead and moves forward and backward in a direction perpendicular to the pipe conveyance line in the same manner as the bead cutting and clamping device 1 is arranged on the rear surface of the bead forced guide 3, and a bead forced guide 3 is arranged on the rear surface of the bead forced guide 3 on the pipe conveyance line. A forced discharge kicker 4 is disposed at the pipe for forcibly kicking the discharged pipe in the process of discharging the pipe in a direction perpendicular to the conveyance line,
In addition, while the waste is being temporarily processed in the waste processing line that is on the same line as the bead waste removal device 2 on the discharged table, there is a stopper and cutter that stops the pipe and discharges the pipe after the waste processing is completed. 5, and a vibrator for forcibly centering and guiding the beads between the bead scraping device 2 on the bead scraping processing line and the rear end of the discharged tube, and vibrating the beads as necessary. 1. An automatic internal bead disposal device for welded steel pipes, characterized in that a bead guide 6 is provided with a bead guide 6, and a pinch roll 7 for forcibly transporting cut pipes is disposed on a pipe transport line.