JP4464457B1 - Tube material forming machine - Google Patents

Abstract

The present invention provides a tubular material forming machine with a simple structure, high bending accuracy, and excellent versatility.
A processing machine 10 is provided for bridging and forming an end portion 1a of a pipe material 1. The processing machine 10 has a base plate 11, a guide rod 14 is disposed between the gutter and the clamping means, and the guide rod 14 is attached to the guide rod 14. The first plate 12 and the second plate 13 are controlled to move forward and backward along. The first plate 12 has a rotating gear plate 23 and a primary roller 30 on a support 31. The second plate has a driven plate 15 that follows the rotating gear plate 23, and has a secondary roller 40. The primary roller 30 and the secondary roller 40 revolve by the rotation of the rotating gear plate 23, and the primary roller 30 has a self-rotating conical shape that is in sliding contact with the end of the tube material 1 at a low angle of 60 ° or less. The next roller 40 is characterized in that it has a conical shape capable of rotating in contact with the end portion of the tube material 1 at about 90 °.
[Selection] Figure 1

Description

  The present invention relates to a processing machine that is used to perform a ribing process on an end of a metal pipe such as a steel pipe or a SUS pipe.

In a technical field where piping is connected using a loose flange, a flanged pipe material is used.
As the flanged pipe material, there are a type in which the flange portion is welded and joined to the end portion of the pipe material, and a type in which the end portion of the pipe material is expanded and subjected to bending processing (flare processing) to the outside.

As a tube forming method, the tube end is bent outward at a low angle of about 40-50 ° with a conical primary roller, and then bent outward at about 90 ° by pressing with a secondary roller. The construction method is well known (Patent Document 1).
However, the processing machine described in Patent Document 1 has a secondary shaft in the main shaft that can rotate and slide in the same direction, has a secondary roller at the tip flange portion of the main shaft, and is orthogonal to the rotation at the tip of the secondary shaft. It has a primary roller so as to slide in the direction, and it is not only mechanically complicated to control the primary roller to slide vertically with respect to the axis, but also the tube body and collar portion of the tube material Since it is difficult to adjust the bend R of the corner portion, cracks are likely to occur in this portion, and it is not possible to perform a protruding process such as a SUS tube having a small extension.

JP 2004-82184 A

  An object of the present invention is to provide a tube forming and processing machine for a pipe material which has a simple structure but has high bending accuracy and is excellent in versatility.

[Technical Field] The present invention is a processing machine for forming a rib on the end of a pipe material, having a base plate that supports a primary cylinder opposite to the clamp means of the pipe material, and a guide between the base plate and the clamp means. A rod is provided, and has a first plate on the base plate side and a second plate on the clamp means side which are controlled to advance and retract along the guide rod toward the clamp means, and the first plate is formed by a primary cylinder. It has a rotating gear plate that is controlled to move forward and backward and is controlled to rotate by the spindle motor. The second plate is controlled to move forward and backward by a secondary cylinder provided on the first plate , and is driven by the rotating gear plate. The rotating gear plate has a primary roller on a support provided through the driven plate, and the driven plate is a primary plate. A secondary roller relatively forward and backward with respect to over la, the primary roller is sliding at 60 ° or lower angle to the end of the tubing, capable of rotating while revolving by the rotation of the rotary gear plate The conical shape of the secondary roller is slidably contacted with the end of the tube at approximately 90 °, and is revolved by the rotation of the rotating gear plate . The conical shape of the secondary roller is inserted inside the tube. It has a metal jig, and the metal core jig has a disk shape that matches the inner diameter of the tube material. From the support supporting the primary roller, the primary metal passes between the primary roller and the secondary roller. It protrudes in front of the roller.

Here, the primary cylinder controls the advance amount and sliding contact pressure of the primary roller by hydraulically controlling the applied pressure , and the secondary cylinder controls only the relative position between the secondary roller and the primary roller. It is preferable.

In the tubular material molding machine according to the present invention, when the end portion of the tube material is expanded and bent at a low angle of 60 ° or less by the primary roller, while rotating the rotating gear plate, The first plate is advanced, and it is possible to adjust the size of the collar bending R by adjusting the advance speed and the advance amount.
In addition, the secondary cylinder can control the forward and backward positions of the secondary roller relative to the primary roller by adjusting the pressure with the rotating gear plate in the primary cylinder. It becomes possible.
Further, since the primary roller is controlled to move forward and backward by the movement of the first plate, if the core metal jig is held on the support portion of the primary roller, the core metal jig is moved in accordance with the advance of the primary roller. Can be inserted inside the tube.

The side surface schematic diagram of the bridging molding processing machine which concerns on this invention is shown. The plane schematic diagram of the bristle forming machine concerning the present invention is shown. The flow of processing by the primary roller and the secondary roller is shown. The enlarged view of the edge part of a pipe material is shown. The hydraulic system explanatory drawing of the bridging forming processing machine which concerns on this invention is shown. The enlarged view of a collar part is shown. The state which attached the metal core jig is shown.

A structural example of the rib forming machine 10 according to the present invention will be described below with reference to the drawings.
1 shows a side view, FIG. 2 shows a plan view, and FIG. 3 (a) shows a state in which the end portion of the pipe material is expanded to about 40 ° and bent outward by a primary roller 30. 3 (b) shows a state where the secondary roller 40 is further bent into a flange shape up to about 90 °.
As shown in FIGS. 1 and 2, an upper clamp 51 and a lower clamp 52 are provided so that an end 1a of a tube material 1 as a workpiece protrudes inward by a predetermined length at one end (right side in FIG. 1) of the processing machine. The base plate 11 is disposed so as to face the clamp means, and four guide rods 14 are provided between the base plate 11 and the clamp means.
It has a first plate 12 on the base plate side and a second plate 13 on the clamping means side that move forward and backward along the four guide rods 14.
The first plate 12 is controlled to move forward and backward by a primary cylinder rod 16 a of a primary cylinder 16 supported by the base plate 11.
The second plate 13 is moved forward and backward by the cylinder rod 17a of the secondary cylinder 17 supported by the first plate.
A rotating gear plate 23 is rotatably attached to the first plate 12, and the rotating gear plate 23 is transmitted through the intermediate gear 22 by the main shaft gear 21 driven by the main shaft motor 20.
The rotating gear plate 23 has a primary roller 30 through a support 31 toward the clamping means side.
The support column 31 is attached through the driven plate 15, and the driven plate 15 is rotatably attached to the second plate 13.
A secondary roller 40 is attached to the driven plate 15 via a support base 41.

Since the primary roller 30 and the secondary roller 40 are eccentric in the direction perpendicular to the axis of the rotary gear plate 23 and are inclined toward the center of the axis, they are revolved by the rotation of the rotary gear plate 23. The primary roller 30 and the secondary roller 31 can rotate about the roller axis.
The driven plate 15 slides along the guide rod 14 and the sub guide rod 18, and the relative position of the primary roller 30 and the secondary roller 31 in the axial direction is changed by the forward and backward movement of the cylinder rod 17 a of the secondary cylinder 17. It is controlled.

The hydraulic control system of the processing machine will be described with reference to FIG.
The primary cylinder hydraulic control 61 and the primary cylinder 16 are connected to a hydraulic pipe 61a, and the forward movement and the pressing force of the first plate 12 are controlled.
On the other hand, the secondary cylinder 17 is provided with a secondary cylinder hydraulic control 62 and a hydraulic pipe 62a. When the cylinder rod 17a of the secondary cylinder 17 advances, the secondary roller 40 advances.
The upper clamp 51 and the lower clamp 52 are connected to a clamp hydraulic control 63 and a hydraulic pipe 63a.

Next, the flow of rib forming will be described with reference to FIG.
FIG. 3A shows a step of expanding and bending the collar portion 2 outward by about 40 ° by the primary roller 30, and an enlarged view thereof is shown in FIG.
The primary roller 30 has a substantially conical shape, and revolves and rotates so that the side surface of the cone is expanded from the inside to the outside of the end portion 1 a of the tube material 1.
At this time, by adjusting the advance amount and sliding contact pressure of the primary roller 30, it is possible to increase or decrease the magnitude of the bending R of the connecting portion between the collar portion and the main pipe as shown in FIG. It is.
Therefore, it becomes possible to set the bending R in accordance with a material having a small elongation, a material that is easily broken, a thickness, and the like, and the versatility of the tapping process is high.

As the next step of expanding and bending the end 1a of the tube material to a low angle of 60 ° or less with the primary roller 30, the second plate 13 is advanced by the secondary cylinder 17.
When the second plate 13 moves forward, the side surface portion of the secondary roller comes into contact with the end portion of the pipe material, and the collar portion is bent by about 90 ° by revolution and rotation, and the collar portion 2 is completed.

In the spout forming machine 10 according to the present invention, as shown in FIG. 7, it is possible to provide a holding portion 72 for holding the cored bar jig 70 on the support 31 of the primary roller 30. A shaft 71 is projected from 72 between the primary roller 30 and the secondary roller 40 toward the clamping means, and a disc-shaped core metal jig for buckling prevention that matches the inner diameter of the tube material is provided at the tip of the shaft. It is attached.
If it does in this way, the cored bar jig 70 will be inserted in the inside of a pipe material with advance of primary roller 30.

DESCRIPTION OF SYMBOLS 1 Tubing material 1a End part 2 Collar part 10 Spout molding machine 11 Base plate 12 1st plate 13 2nd plate 14 Guide rod 15 Drive plate 16 Primary cylinder 17 Secondary cylinder 18 Sub guide rod 20 Spindle motor 21 Spindle gear 23 Rotation Gear plate 30 Primary roller 31 Post 40 Secondary roller 41 Support base 51 Upper clamp 52 Lower clamp 61 Primary cylinder hydraulic control 62 Secondary cylinder hydraulic control 63 Clamp hydraulic control

Claims (1)

It is a processing machine for bridging and forming at the end of a pipe,
Opposite to the tube clamping means, it has a base plate that supports the primary cylinder,
A guide rod is disposed between the base plate and the clamping means, and has a first plate on the base plate side and a second plate on the clamping means side that are controlled to move forward and backward along the guide rod toward the clamping means. ,
The first plate has a rotary gear plate that is controlled to move forward and backward by a primary cylinder and is controlled to rotate by a spindle motor.
The second plate is controlled to move forward and backward by a secondary cylinder provided on the first plate , and has a driven plate that is driven by the rotating gear plate. The rotating gear plate is attached to a column provided through the driven plate. The driven plate has a secondary roller that moves forward and backward relative to the primary roller,
The primary roller is slidably in contact with the end of the tube material at a low angle of 60 ° or less, revolves by rotation of the rotating gear plate , and has a conical shape that can rotate.
The secondary roller is slidably contacted with the end of the tube at about 90 °, and has a conical shape that can revolve as it revolves by the rotation of the rotating gear plate ,
There is a buckling prevention core metal jig inserted inside the pipe material, and the core metal jig has a disk shape matching the inner diameter of the tube material, and from the support supporting the primary roller, the primary roller and 2 A tubular material molding machine characterized in that it protrudes forward of the primary roller via a space between the secondary roller and the secondary roller.

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