JPH0756092Y2 - Pipe end processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a pipe end processing apparatus for forming an outward or inward bent portion on an end edge of a metal pipe.

[Conventional technology]

Conventionally, a pipe end processing device that forms an outward bent portion such as a cap nut engagement for the end edge of a pipe or an inward bent portion such as a flange engagement of a screw cylinder is driven in one direction by operation of a motor, In addition, while lowering the rotary lifting shaft that moves up and down by the action of the cylinder, the molding shaft and the molding roll of the molding tool that is replaceably attached to the lower end of the lifting shaft by screwing are brought into pressure contact with the edge of the pipe. It is like this.

[Problems to be solved by the device]

By the way, the molding shaft and molding roll of the conventional edge processing equipment are
Since the lower surface of the base body that constitutes the molding tool is supported via bearings and spindles, if the diameter of the pipe is different, select the molding tool that has the molding shaft or the molding roll at the position that matches the diameter of the pipe, and then rotate the rotary shaft. There is a problem that it is necessary to attach a molding tool to, which is extremely troublesome.

Further, since it is necessary to prepare a molding tool for each diameter of the pipe, there is a problem that the number of molding tools is large, and selection and management are troublesome and the cost is large.

Therefore, an object of the present invention is to provide a pipe end processing device capable of forming bent portions on pipes having different diameters.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the present invention, while lowering the spindle supported by penetrating the piston shaft and the axial center of the piston shaft by the extension action of the first cylinder supported by a column or the like, In the pipe end processing device that presses the molding member of the molding tool provided at the lower end of the spindle to the end edge of the pipe and drives the spindle by the motor to form the bent portion at the end edge of the pipe, at the lower end of the spindle A scroll chuck is attached, and a lower end of a rod penetrating through the spindle axis to move up and down is engaged with a slide mechanism of a slider provided so as to slide on the line connecting the center of the lower surface of the scroll chuck with the peripheral edge. When the upper end of the rod is connected to the second cylinder installed on the upper end of the spindle, , The above second cylinder, provided with a rotary joint for connecting a pressure fluid supply source is obtained by adopting a configuration in which a lower surface for molding the molding tool member with the slider.

[Action]

By moving the rod up or down by the action of the second cylinder, the molding tool slides together with the slider through the slide mechanism.

As a result, the position of the molding member from the spindle axis can be changed.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, a first cylinder 1 is provided on a column (not shown) that stands upright from the seat.

Further, a spindle 3 is provided at the axial center of the piston shaft 2 which is moved up and down by the contracting and extending actions of the first cylinder 1 and which penetrates along the axial center and is supported so as to rotate freely at a fixed position.

Further, a motor 5 is installed above the first cylinder 1 via a non-rotating support member 4 that moves up and down together with the piston shaft 2, and a pulley 7 is provided between the output shaft 6 of the motor 5 and the spindle 3 between the pulley 7 and the pulley 7. The rotation is transmitted through the belt 8 that is stretched over the belt.

As a means for preventing the support member 4 from rotating, in the illustrated case, a vertical guide rail 9 is provided on the first cylinder 1, and a projecting piece protruding from the support member 4 is provided on the guide rail 9.
10 is inserted.

At the lower end of the spindle 3, the scroll chuck 11
Is stuck.

Further, the rod 12 is passed through the axis of the spindle 3, and the lower end of the rod 12 slides on a line connecting the center of the lower surface of the scroll chuck 11 and the peripheral edge.
It is engaged with the slide mechanism 14 of.

In the illustrated case, the rod 12 and the slide mechanism 14 are engaged with each other by connecting the rod 12 to the end effecting tubular body 15 of the slide mechanism 14.
Insert the lower end of the
The upper surface of the first ring 17 of the inner screw screwed into the 16 from below is brought into contact with the upper edge of the step portion 18 provided at the lower end of the inner peripheral portion of the tubular body 15, and the inner peripheral thread portion of the step portion 18 Although the first ring 17 is pressed upward by the second ring 20 which is an external screw threaded into the lower part 19 but may be engaged by a method other than the above.

A second cylinder 21 that moves up and down together with the spindle 3 is connected to the upper end of the rod 12.

When the second cylinder 2 is mounted on the spindle 3, the second cylinder 2 rotates integrally with the spindle 3. Therefore, the rotary joint 26 is provided in the second cylinder 21,
The cylinder 21 and the pressure fluid supply source are connected via this rotary joint 26.

Further, on the lower surface of the slider 13, a molding tool 23 with a molding member 22 for bending an inward or outward bent portion a at the edge of the pipe A is provided.

The molding tool 23 is fixed to the lower surface of the slider 13 by bolting or the like, and the molding member 22 is a roll having a molding annular groove on the outer periphery in the case of the drawing, and an inward bent portion a is formed at the end of the pipe A. Although it is formed by molding, an outward bent portion may be formed (not shown) at the end of the pipe by using an inclined rotating shaft having a forming annular groove on the outer circumference.

Reference numeral 24 in the drawing denotes a guide rail of the slider 13.

The present invention has the above-described structure, and when the rod 12 is moved up by the action of the second cylinder 21, the slide mechanism 14 that acts causes the molding tool 23 together with the slider 13 to slide so as to approach the axis of the spindle 3. . Also, the second
When the rod 12 is lowered by the action of the cylinder 21, the slide mechanism 14 that operates acts together with the slider 13 on the molding tool.
23 slides away from the axis of spindle 3.

As a result, the distance from the axis of the spindle 3 to the molding member 22 can be changed and adjusted so as to be smaller or larger.

〔effect〕

As described above, according to the pipe end machining apparatus of the present invention, the distance between the molding tool of the molding tool provided at the lower end of the spindle and the axis of the spindle can be freely changed. Bending portions can be processed on the edges of pipes of various diameters by using a table processing device.

Therefore, it is not necessary to prepare many molding tools according to the diameter of the pipe.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a vertical sectional front view of a processing apparatus according to the present invention, and FIG. 2 is an enlarged vertical sectional front view showing a main part of the same. A: pipe, a: bent portion, 1st first cylinder, 2
...... Piston shaft, 3 ...... Spindle, 4 ...... Support member,
5 ... motor, 6 ... output shaft, 7 ... pulley, 8 ...
Belt, 9 ... Guide rail, 10 ... Projection piece, 11 ... Scroll chuck, 12 ... Rod, 13 ... Slider, 14 ...
… Sliding mechanism, 21 …… Second cylinder, 22 …… Molding member, 23 …… Molding tool, 26 …… Rotary joint,

Claims (1)

[Scope of utility model registration request] 1. A first cylinder supported on a column or the like is provided at the lower end of the spindle while lowering the spindle supported by the piston shaft by penetrating the piston shaft and the axial center of the piston shaft. In a pipe end processing apparatus in which a molding member of a molding tool is pressed against an edge of a pipe and a spindle is driven by a motor to form a bent portion on the edge of the pipe, a scroll chuck is attached to a lower end of the spindle, and The lower end of a rod penetrating the shaft axis of the spindle in a vertically movable manner is engaged with a slide mechanism of a slider provided so as to slide on a line connecting the center of the lower surface of the scroll chuck with the peripheral edge thereof. While connecting the upper end of the rod to the second cylinder installed on the upper end,
A pipe end processing apparatus, wherein the second cylinder is provided with a rotary joint for connecting to a pressure fluid supply source, and a molding tool with a molding member is provided on the lower surface of the slider.