JPH0329539B2 - - Google Patents

Description

Detailed Description of the Invention (Objective of the Invention) The present invention is aimed at conveying a long heavy steel plate onto a conveyor roller table in bevel milling or grinding of the edge of a steel plate, which is a pre-process of welded steel pipe processing. This invention relates to a conveying device for steel plates that can be loaded, carried in, cut, and carried out.

(Prior art) In conventional bevel milling or grinding of the edge of a steel plate, the long, heavy steel plate is placed on a roller table and transported to the processing equipment.
The cutting process is carried out by moving a gate-shaped traveling cart or mount to which a milling tool or grinding head is attached and fixed, and performing cutting feed processing.Alternatively, the milling tool is fixed and a steel plate fixed on a roller table is moved with its claws. There was also a method of processing the steel plate by using a conveyor roller table, but in any case, when carrying the steel plate on the conveyor roller table to the edge processing equipment, it is necessary to accurately feed the steel plate straight to the center of the conveyor table, and when the cutting conveyance is completed. A conveying table guide device and a device for attaching and detaching the steel plate to and from the conveying table that can automate the operations of unloading the steel plate and retracting the conveying table have not been developed, which has been a problem in processing operations.

(Structure and operation of the invention) The present invention solves the above-mentioned problems by carrying a conveying roller table into a processing device for cutting and grinding long heavy objects, and carrying out the processing and feeding.
This is a steel plate carrying-in device that can carry in the next lot of steel plates by carrying out the steel plate and retracting the conveyance table.

Its basic structure consists of a conveyor roller table installed in a steel plate edge milling or grinding device, and square strips are placed horizontally on both sides of the conveyor table. A conveyance table guide device is made up of a pair of table guides on both sides with protruding guide rollers installed horizontally in series in the conveyance direction, and a magnet is screwed onto a magnetic holder installed in series on the conveyance table to convey steel plates. The device is equipped with a device for attaching and detaching the steel plate to and from the conveyor table, which drives the magnetic lifting device that attracts the steel plate and lowers the magnetic holder when processing and conveyance of the steel plate is completed, attaching and detaching the magnet from the steel plate and retracting the conveyor table. .

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show a steel plate edge milling apparatus having a steel plate conveying device 1. FIG. Steel plates P, which are long and heavy workpieces, are placed on a roller table 2 on the carry-in side, guided by a narrow table guide 3 arranged on the carry-in center line, and placed side by side in a cutting section 4 in the center of the processing device. It is shown by an imaginary line on the conveyance table which has been cut by the flat bevel milling unit _MF and the bevel bevel milling unit _MB and has been conveyed into the table guide 3 on the conveyance side. The conveyance table 5 is moved straight forward and backward by a table drive rack and pinion 6. As shown in FIG. 2, the conveyance table 5 is constructed by connecting a pair of table guides 3 on both sides, which serve as opposing conveyance guide plates, mounted on a base frame 7 constructed in series at intervals in the conveyance direction. It constitutes the cutting section 4 on the frame 17 and conveyance guide means in the unloading section. For convenience of illustration, the loading section is shown in the third section.
As shown in FIG.

The cable roller support 8 shown in FIG. 2 supports a power supply cable roller 10 leading to a cable winding reel 9 for supplying cable power to the conveying table 5.

Figures 3 to 5 show the table guide 3 on the loading side, which is a table installed in a foundation pit B at a distance in the conveying direction at the center of the left and right conveying rollers R having a conveying level surface shown by imaginary lines. A pair of opposing arms 12 are installed on the guide base 11 and are shaped like gateposts and extend parallel to the transport direction at the top.
The guide roller 13 is pivoted to the upper part of the table guide 3 and the tip of the arm.
As shown in the figure, the upper guide rail 14 of the transport table 5 is inserted between the table guides 3 shown by imaginary lines.
The transport table 5 is guided by contacting the outer surface and the lower edge surface of the transport table 5 on both sides and rolling the transport table 5. Figure 6 shows guide roller 1 attached to the upper part of the table guide.
3, which is pivotally attached to a roller shaft 15 via a washer 16 so as to be freely movable.

Figures 7 and 8 show the conveyance guide means in the cutting section 4, which are constructed on both left and right sides on a pair of table guide brackets 18 mounted on a common frame 17 provided on the base frame of the processing device. The guide rollers 13 pivoted on the upper and lower guide sections on both sides provided between the steel plate receiving roller sections 19 abut against the outer surfaces of the upper and lower guide rails 14 and 20 of the conveyance table and the left and right lower edge surfaces of the upper guide rail 14. It is formed like this. 9 to 14 show the overall arrangement of the conveyance table 5.
As shown in Figure 10, the tables are 21, 22, 2
In the table body formed by the four table units shown in Figures 3 and 24 and the table joint part 25 connecting them, there are four rectangular upper and lower guide rails on both sides and above and below of the frame with the box-frame configuration shown in Figure 13. 14 is added and placed horizontally along the table as shown in FIG. A rack 29 is attached to the lower side of the table lower plate 26 through rack mounting metal fittings 27 screwed on the left and right sides and has a parallel key 28 embedded therein, and is attached over the entire length of the table. 7 magnets 30, 8 magnet lifting devices 31, and a workpiece positioning stopper 32, shown by imaginary lines in FIGS. 9 and 11,
It shows that the push-out claw 33 and the power package 34 for lifting the magnet are installed. 12th
The figure is an enlarged view of the left end of FIG. 11, showing that the magnet 30 is placed on the bottom plate 36 of the magnet holder 35 and installed on the table, with the magnet lifting device 31 in between. FIG. 14 is an enlarged view of the right end of FIG. 11, showing the workpiece positioning stopper 32, push-out claw 33, magnet lifting package 34, and table stopper 37.
It is equipped with the following equipment for transportation and handling.

As shown in FIGS. 15 to 17, the magnetic holders 35 installed on the conveying table 5 are arranged alternately in series with the magnetic lifting device 31 on the conveying table 5, and both ends of the bottom plate 36 of the magnetic holder 35 are A lifting coil spring 39 is held in a case 38 protruding from the top by holding it with a spring holder 40 and a lid 41, and the other end is pressed onto the transport table 5, and the magnetic holder 35 is held on the transport table 5. A long prismatic magnet 30 screwed at the left and right ends is placed on the holder 35 so that the conveyed steel plate P can be attracted on the conveying level surface. In addition, the magnet 30 is attached to the magnet holder 3.
The holding fittings 42 for holding the magnet 30 on the conveyor table 5 protrude to hold the corners of the magnet 30, and the entire magnet holder 35 is lifted up and down on the conveyor table 5 by the elastic force of the lifting coil spring 39. Parallel key 4 screwed onto both side plates 43
4 so that it can move up and down. The protruding bottom plates 45 at the front and rear ends of the case 38 provided at both ends of the magnet holder 35 are brought into contact with each other, and the hydraulic cylinder 47 for raising and lowering the magnet with the driving head 46 abutting against it is placed in the center so that the front and rear magnet holders 35 can be raised and lowered. As shown in FIG. 17, a ceiling frame 48, which is installed inside the ceiling frame 48, is screwed onto both side plates 43 hanging vertically above the transport table 5 to form a gate shape. In FIG. 16, the raised position of the magnetic lifting device 31 is shown by an imaginary line. The magnetic lifting device 31 attached to the left end is of a single-push type that raises and lowers only the protruding bottom plate 45 of the magnetic holder attached to the right side. or,
A slide piece 49 for attaching a magnet is attached to the center of the bottom plate 36 of the magnet holder 35. FIGS. 18 and 19 show the transport table guide 3 on the unloading side enlarged from FIGS. Both sides of the conveyance table 5 which is guided by the table guide 3 and freely moves by the guide roller 13 which is pivoted to the table guide 3 supported by the guide frame 51 in the conveyance direction, are in contact with the outer surface and the lower edge surface of the upper guide rail 14. The guide roller 13 shown in FIG.
The operation of this steel plate conveying device is a rack and pinion system in which drive is transmitted to the conveying table via a gear coupling from a table-driving DC motor installed on a common frame 17, which is the cutting part 4 of the steel plate edge milling device. The conveyance speed and cutting speed can be changed as appropriate to convey and cut the steel plate. As shown in Fig. 14, the conveyance table has a processing positioning stopper 32 with a built-in power cylinder for positioning the steel plate for processing, a pushing claw 33, and a power package 34 for magnetic lifting. 3
Pressure oil was supplied to the hydraulic cylinder 47 of No. 1, and the upper magnet 30, which was crimped to the steel plate P at the conveyance level surface of the steel plate, was excited by the lifting coil spring 39, and the cutting and conveyance of the attached steel plate P were completed. At this time, the excitation of the magnet 30 is cut off, the magnet 30 is lowered by overcoming the upward force of the magnet 30, and the conveying table 5 can be moved backward without the magnet 30 coming into contact with the steel plate. These operations can be performed using an operating device provided on the common frame 17. Therefore, after the steel plate is processed, it is automatically carried out, and the conveyance table is moved back, so that the next lot of steel plates can be loaded and carried in. In addition, in order to achieve the effective operation of this conveyance device, it is also necessary to provide a conveyance table that is a combination of a guide roller and a table guide as a conveyance guide means in order to improve the conveyance accuracy.

(Effects of the Invention) Since the present invention has the above configuration, it has the following advantages.

(1) Equipped with a transport guide device that can accurately feed linearly to the center of the table that transports long and heavy assembled steel plates, improving the accuracy of edge processing and improving the quality of the next process, welded steel pipe processing. and be able to contribute to improving productivity.

(2) A magnet and a magnetic lifting device are installed as a device that can automatically fix or detach the steel plate to the conveyor table during processing and transport of the steel plate, and the steel plate can be freely attached to and detached from the conveyor table. Loss time can be reduced, and the productivity of the processing equipment can be improved because the next lot of steel plates can be carried in by retracting the magnets installed on the conveyance table without coming into contact with the processed steel plates. Furthermore, since the rack and pinion drive device attached to the conveyance table can be switched between cutting feed and conveyance in two stages, it can be used to improve productivity.

[Brief explanation of drawings]

Figure 1 is the overall layout (plan view) of the steel sheet conveying device, Figure 2 is the same as above (front view), Figure 3 is a partially assembled view of the table guide loading side (plan view), and Figure 4 is the same as above (front view). ), Figure 5 is the same as above (side view), Figure 6 is a detailed view of the guide roller, Figure 7 is an assembly diagram of the table guide cutting part (front view), Figure 8 is the same as above (side view), Figure 9 is the layout of the transport table (top view), Fig. 10 is a split view of the guide rail (front view), Fig. 11 is the layout of the transport table (front view), and Fig. 12 is the left end of the transport table (plan view). , FIG. 13 is a sectional view of the conveyance table, and FIG.
The figure shows the right end of the conveyance table (front view), Fig. 15 shows the magnetic lifting section (top view), Fig. 16 shows the same as above (front view), Fig. 17 shows the same as above (side view), and Fig. 18 shows the table guide. Unloading side assembly drawing (front view), 1st
Figure 9 is the same as above (side view). (Explanation of symbols of main parts), 1... Steel plate conveyance device, 3... Table guide, 5... Transfer table, 7... Foundation frame, 13... Guide roller, 14... Upper guide rail, 20... ...Lower guide rail, 21...Table unit, 22...
...Table unit, 23...Table unit, 24...Table unit, 30...Magnet, 31...Magnetic lifting device, 35...Magnetic holder, 36...Bottom plate, 38...Case, 39...For lifting Coil spring, 45... Protruding bottom plate, 46... Drive head, Hydraulic cylinder, P...
...Steel plate.

Claims (1)

[Scope of Claims] 1. A pair of table guides on both sides that are provided with protruding guide rollers that can be mounted on a base frame constructed in series at intervals in the conveyance direction of the conveyance roller table to form opposing conveyance guide surfaces. The outer side of the upper and lower guide rails is made up of four rectangular strips placed horizontally on the top and bottom of both sides of the transport table, which is made up of long box frame-shaped table units connected to the transport guide device. and a conveying table whose upper and lower edges can be fitted into the floating guide device of the guide roller, in which a bottom plate connecting the cases protruding from both ends on the conveying table and a magnetic holder with a spring installed inside the case are arranged in series. In addition, the magnet screwed onto the bottom plate of the magnetic holder is pushed up to the conveyor steel plate so that it can be attracted, and the bottom plate parts further protruding from both ends of the magnet holder are brought into contact with the joint formed by front and rear abutment. A steel plate attaching/detaching device is provided in which a magnet lifting device is installed on a conveying table at both ends of a magnet holder and is equipped with a driving device having a drive head with a drive head installed in the magnet holder. A steel plate conveying device installed in a steel plate edge processing device, characterized by: