JPH04200897A - Device for holding backing metal - Google Patents

Abstract

PURPOSE:To improve function of a holding device for backing metal by selecting plural kinds of tip pieces fitting an adjusting bolt at tip part and adjusting length of a cylinder mechanism. CONSTITUTION:In the case of fitting the backing metal to end part at inside of a column, the optional tip piece 11 is selected in plural kinds of the tip pieces 11 having different lengths and fitted to any one side of a cylinder mechanism 7, and further, the length of cylinder mechanism 7 is adjusted with the adjusting bolt 37 fitted to tip part of the tip pieces 11. By this method, this can be easily kept up with various kinds of diameter and thickness of the column with one piece of the cylinder mechanism 7 and a few number of tip pieces 11, and this function is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a backing metal holding device for holding down a backing metal when the backing metal is attached to the inner end of a column, for example.

(Prior art) For example, when temporarily attaching a backing metal to a predetermined position on the inside end of a column, the backing metal is fixed to the end of the column with a clamp, etc., and in this state, several places are welded. It was tacked on.

In this method using a ramp, in order to push the backing metal onto the column without any gaps, correction work with a hammer is required, which is complicated, and the backing metal is firmly fixed in the specified position. The problem was that it was difficult to do so.

Therefore, as a solution to such problems, a backing metal pressing device using a hydraulic cylinder mechanism has been considered. In other words, the backing metal is pressed against the inner end of the column by both ends of the hydraulic cylinder mechanism by moving the hydraulic cylinder mechanism's cylinder head in and out as appropriate, and in this state, it is temporarily attached at several points by welding. In order to accommodate various types of actuators with different diameters, pieces of various lengths can be used as actuators and these can be replaced as necessary.

(Problem to be solved by the invention) The conventional configuration described above has the following problems.

That is, the diameter of the column is various (for example, 7 types from 7' OOmm to 4'00 mm), and the thickness of the column is also various (for example, 32 mm to 4'00 mm).
There are six types (from mm to 16 mm). Therefore, in order to deal with these various cases using the conventional backing metal presser, there was a problem in that a large number of pieces of a plurality of different sizes had to be prepared.

The present invention has been made based on the above points, and its purpose is to provide a backing metal presser that can accommodate columns of various diameters and columns of various thicknesses with a small number of parts. It is about providing.

(Means for Solving the Problems) In order to achieve the above object, a backing metal pressing device according to the present invention includes a cylinder mechanism including a cylinder and a sliding body retractably housed in the cylinder; a driving means for driving the sliding body to move in and out; a tip piece having a plurality of different lengths prepared in advance and detachably attached to at least one of the cylinder and the sliding body of the cylinder mechanism; and the tip piece. It is characterized by comprising an adjustment holder that is removably attached to the tip of the piece.

(Function) For example, when temporarily attaching a backing metal to the inner end of a column, with the backing metal placed at a predetermined position on the inner end of the column, the backing metal holding device according to the present invention Press and secure.

At this time, for example, one tip piece having an optimal length is selected from among a plurality of tip pieces having different lengths, taking into consideration the diameter of the column, and attached to either one of the cylinder mechanisms.

Further, depending on the thickness of the column, the adjustment bolt at the tip of the tip piece is moved in and out as appropriate so that the length of the tip of the cylinder mechanism on the opposite side to the tip of the tip piece is slightly shorter than the inner diameter of the column.

After that, place the cylinder mechanism in the specified position in the column,
The backing metal is pressed against the column by extending the screw rod by the driving means.

Then, it may be temporarily attached by welding.

When selecting and installing the tip pieces, as mentioned above, instead of selecting one tip piece and attaching it to either end of the cylinder mechanism, you can select two pieces and attach them to both ends of the cylinder mechanism. You can do it like this.

In short, you can prepare multiple tip pieces of different lengths in advance, select the optimal one according to the diameter of the column, and then use the adjustment bolt to adjust the optimal length according to the thickness of the column. All you have to do is select and install the number of tip pieces and insert and remove the adjustment bolts.
The feature is that it can accommodate columns of various diameters and various thicknesses.

(Embodiment) Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 7. FIG. 1 is a perspective view showing a state in which a backing metal 5.5 is pressed against a predetermined position on the inner end of a column 3 using the backing metal pressing device 1 according to this embodiment.

The backing metal pressing device 1 is composed of a cylinder mechanism 7, a hydraulic pump 9 as a driving means for driving the cylinder mechanism 7, and a tip piece 11 attached to one end side of the cylinder mechanism 7. ing. The above hydraulic pump 9
and the cylinder mechanism 7 are connected via a hydraulic hose 13.

The cylinder mechanism 7 has a configuration as shown in FIG. First, there is a cylinder 15, and this cylinder 15
On the left side of the figure, a cover 1■ is covered and fixed.

A piston rod 19 as a part of a sliding body is accommodated in the cylinder 15 so as to be slidable in the left-right direction in the figure.

Further, a plunger 21 as a part of a sliding body is housed on the left side of the piston rod 19 in the figure so as to be slidable in the left-right direction in the figure, with the plunger 21 passing through the cover 17. A flange 23 is formed at the right end of the plunger 21 in the drawing, and a compression coil link 25 is installed between the flange 23 and the cover 17. The plunger 21 and the screw I/rod 19, this compression coil spring 2
'5, it is always on the right side of the diagram (-1 force).

An adjustment bolt 27 is screwed into the tip of the plunger 21, and its protrusion length can be adjusted by rotating it as appropriate.

A pressure oil boat 29 is formed in the cylinder 15.
The already mentioned hydraulic hose 13 is connected to this pressure oil boat 29. Pressure oil supplied via the pressure oil boat 29 acts on the right side of the piston rod 19 in the figure, and thereby resists the spring force of the compression coil spring 25 and moves the piston rod 19 and plunger 21 to the left side in the figure. to slide. Further, when the action of the pressure oil is stopped, the plunger 21 and the piston rod 19 slide and return to the right side in the figure due to the spring force of the compression coil spring 25.

Now, the right side of the cylinder 15 is a shaft part 31, and the already mentioned tip piece 11 is mounted and fixed onto this shaft part 31. As for the fixing method, a recess 33 is formed on the shaft portion 31 side, and on the other hand, a fixing pole 1-35 is screwed into the tip piece 11 side. By screwing in this fixing bolt 35 and engaging its tip with the recess 33, the tip piece 11 can be attached to the shaft portion 3.
Fixed at 3.

An adjustment pole l-37 is screwed into the tip of the tip piece 11. That is, by loosening the lock nut 39 and rotating the adjustment bolt 37 in an appropriate direction,
Its protrusion length can be adjusted.

The hydraulic pump 9 has a configuration as shown in FIG. This hydraulic pump 9 is a foot-operated type,
Pressure oil is discharged by depressing and operating the pedal 41. Further, in order to release the hydraulic pressure, another pedal 43 may be depressed.

By the way, as for the tip piece 11 already explained, a plurality of types of pieces having different lengths are prepared in advance. That is, depending on the diameter (D) and thickness (d) of the column 3, one with an optimal length is selected from a plurality of types of tip pieces 11 and used.

Specifically, the type of tip piece 11 for the opposite side shown in FIG. 6 is prepared, and the type shown in FIG. 7 is prepared as the tip piece 11 for the diagonal corner. has been done. The unit of length is (mm).

Note that this is just an example and is not limited to what is shown in the figure.

The operation will be explained based on the above configuration.

As shown in FIG. 1, a backing metal 5.5 is placed at a predetermined position on the inner end of the column 3, and is pressed and fixed against the column 3 by the backing metal pressing device 1 according to this embodiment. .

At that time, first, depending on the diameter (D) of the column 3, select the optimal length of the tip piece 11 from among multiple types of tip pieces 11.
Select. The selected tip piece 11 is fixed to the shaft portion 31 of the cylinder 15 of the cylinder mechanism 7.

Next, depending on the thickness (d) of the column 3, the tip heath 11
The length of the tip of the adjusting bolt 37 and the tip of the bolt 27 on the plunger 21 side is adjusted by rotating the adjusting bolt 37 attached to the plunger 21 in an appropriate direction. This is backing money 5
．． In order to apply a desired pressure when pressing 5 with the cylinder mechanism 7, the tip piece 11 and the cylinder mechanism 7 are
The length of the tip of the column 3 is slightly shorter than the inner diameter of the column 3, so that an appropriate gap is created.In other words, even if the column 3 has the same diameter, the inner diameter will differ if the thickness is different. The adjustment bolt 37 is moved in and out within its stroke range to provide an appropriate gap.

Next, the cylinder mechanism 7 with the tip piece II fixed
is placed between a pair of backing metals 5.5.

In this state, the hydraulic pump 9 is operated to supply pressure oil to the cylinder mechanism 7. As a result, the plunger 21 protrudes, and the pair of backing metals 5.5 is pressed against the inner end of the column 3 with an appropriate force by the tip of the adjustment pole 1-37 and the tip of the bolt 27 of the plunger 21. I can do it.

All that is left to do is to temporarily attach the backing metal 5.5 to the column 3 by welding.

In addition, when welding and fixing the backing metal 5.5 to the column 3, first, as shown in FIG. 1, the opposite side is welded and fixed. Next, as shown in FIG. 4, the diagonal corners are welded and fixed.

Finally, as shown in FIG. 5, the tips of each backing metal 5.5 are welded and fixed.

However, various methods are used for this work depending on the shape of the backing metal 5, and the key is to weld and fix several arbitrary points so that the backing metal 5 is fixed in close contact with the column 3. do it.

According to this embodiment, the following effects can be achieved.

First, columns 3 of various diameters (D) and various thicknesses (d)
The column 3 can be easily handled by using one backing metal pressing device 1 and a plurality of tip pieces.
Furthermore, the number of tip pieces 11 can be significantly reduced.

That is, it is only necessary to select an arbitrary tip piece 11 from a plurality of types of tip pieces 11 having different lengths and attach it to the tip end 11 of the cylinder 15, and the adjustment bolt of the tip piece 11 By moving the adjustment bolt 37 in and out appropriately, the adjustment bolt 37 can be adjusted to the thickness (d) of the column 3.
This is because the lengths of the tip of the port 27 on the plunger 21 side and the tip of the port 27 on the plunger 21 side can be adjusted.

Also, the work of attaching and detaching the tip piece 11 is done using the fixing bolt 35.
It is extremely easy to adjust the length of the tip of the adjustment bolt 37 and the tip of the cylinder mechanism 7 by simply rotating the adjustment bolt 37 as appropriate.

Note that the present invention is not limited to the above embodiment.

For example, the driving means may be an electric hydraulic pump instead of a foot-operated hydraulic pump.

Further, the cylinder mechanism and the driving means may be of an air type.

The tip piece 11 may also have various lengths other than those shown in FIGS. 6 and 7.

Further, in the above embodiment, the cylinder 15 of the cylinder mechanism 7
The tip piece 11 was attached to the shaft portion 31 of the
It may be attached to the plunger 21 side (or it may be attached to both sides).

(Effects of the Invention) As detailed above, according to the backing metal pressing device of the present invention, an arbitrary tip piece can be selected from among a plurality of types of tip pieces having different lengths and attached to at least one of the cylinders. By installing and adjusting the length of the cylinder mechanism with the adjustment bolt attached to the tip of the tip piece, it is possible to easily accommodate columns of various diameters and thicknesses with one cylinder mechanism and a small number of tip pieces. be able to.

[Brief explanation of the drawing]

1 to 7 are views showing one embodiment of the present invention, in which FIG. 1 is a perspective view showing the state in which the backing metal is pressed against the column by the backing metal pressing device, and FIG. 2 is a view of the cylinder mechanism. A sectional view, FIG. 3 is a perspective view of the hydraulic pump, FIGS. 4 and 5 are front views showing the state in which the backing metal is pressed against the column by the backing metal pressing device, and FIGS. 6 and 7 are the front views of the hydraulic pump. FIG. 3 is a diagram showing an example of types of pieces. 1... Backing metal pressing device, 3... Column, 5...
- Backing metal, 7... Cylinder mechanism, 9... Drive means, 11... Tip piece.

Claims (1)

[Claims] A cylinder mechanism consisting of a cylinder and a sliding body housed in the cylinder so as to be retractable; a driving means for driving the cylinder mechanism to cause the sliding body to protrude and retract; and a plurality of cylinders of different lengths are prepared in advance. A backing metal holding device comprising: a tip piece that is detachably attached to at least one of a cylinder and a sliding body of a mechanism; and an adjustment bolt that is detachably attached to the tip of the tip piece. .