KR101136102B1 - Weld bead peening device of pipe for bellows - Google Patents

Abstract

The welding bead pinning apparatus of the bellows pipe forming tube according to an embodiment of the present invention is connected to the frame, the frame horizontally, the support bead of the forming pipe for the corrugated pipe is installed on the base portion, the frame is located on the bottom, Located on the upper side of the weld bead of the forming tube placed in the supporting portion characterized in that it comprises a roller portion for pressing the weld bead flat and a horizontal moving portion installed in the frame to move the roller portion horizontally.

The welding bead pinning apparatus of the bellows pipe forming tube according to an embodiment of the present invention, by pressing the weld bead formed in the forming pipe flat using a roller to significantly reduce the thickness of the weld bead while preventing the stretching of the forming tube Can give

Forming pipe, welding bead, base rod, pressurization, roller, horizontal feed

Description

 Welding bead peening device for molded pipe for bellows pipe {WELD BEAD PEENING DEVICE OF PIPE FOR BELLOWS}

The present invention relates to a pinning apparatus, and more particularly, by installing a circular support rod in the forming pipe and having a roller moving horizontally on the outside to press the weld bead formed in the forming pipe flat using a roller to form The present invention relates to a welding bead peening apparatus for a molded pipe for bellows pipe which can significantly reduce the thickness of the weld bead while preventing the elongation of the pipe.

In general, bellows pipes (hereinafter referred to as corrugated pipes) are used in precision applications requiring high vacuum, elasticity, stability, and vibration absorption in various fields such as aerospace, semiconductor manufacturing, and nuclear facilities. It has been used for the purpose of preventing foreign matter from penetrating into the coupling part between the coupling elements and buffering and absorbing against vibration shock.

Corrugated pipes are designed as flexible pipes in consideration of the main elements of various thermal expansions, such as pressure and temperature applied to the inside of the pipe, the amount of expansion by heat, the type of fluid flowing through the pipe.

1 is a view showing the configuration of a general corrugated pipe, Figure 2 is a view showing a cross section of the welded portion of the forming pipe for the corrugated pipe.

Corrugated pipe (1) is formed on both sides of the plate for connecting the forming pipe (2) formed in a long cylindrical shape to form a corrugation formed by the acid (5) and the valley 6 and the forming pipe (2) to each other And an end portion formed by welding (welding seam. 3).

As shown in FIG. 2, the weld part 3 is provided with the welding bead 4 which protrudes in and out of the shaping | molding tube 2. As shown in FIG. The weld bead 4 is formed to protrude convexly like a bead.

The corrugated pipe 1 is connected to each other by a welded section 3 to a long cylindrical tubular shaped tube 2, and then a corrugated tube is formed on the molded tube 2 by using a corrugation apparatus, thereby expanding thermal expansion such as pressure and temperature. By the modulus, the wrinkles are elastically elongated and retracted so as to vary in length.

The shaping tube 2 refers to a circular tube which is the basis for producing a large amount by shaping in order to produce a corrugated tube 1, a spiral tube or various other tubes.

As shown in Figure 1, in order to take into account the performance and life of the corrugated pipe (1) is designed by reflecting the material type, thickness (T), pitch (P), acid height (H) and arithmetic (N) and external elements However, the part that can make a difference between the theoretical calculation and the actual simulation is the thickness (T1) of the molded tube (2), and the thickness (T2) of the weld bead (4).

For example, a thicker thickness can withstand a lot of pressure but a shorter lifespan for stretch, while a thinner thickness may be advantageous for a stretch, but a weaker strength for pressure. Therefore, it is necessary to find a method in which the thickness T1 of the forming tube (base material) and the thickness T2 of the welding bead 4 can be most coincident.

In particular, in the thickness of the bellows pipe, the difference between the thickness of the molded pipe (T1) and the thickness of the weld bead (T2) is generated a lot of important equipment, the thickness difference should be reduced.

To this end, some also grind the weld bead 4 by grinding.

It is known that the thickness T2 of the weld bead 4 is formed to be 20 to 35% thicker than the thickness T1 of the molded tube 2 for the bellows pipe, and the thickness difference is maintained within 10%. It is preferable.

However, in the related art, in order to lower the thickness of the weld bead to the thickness of the molded pipe for the bellows pipe, it is necessary to grind the welding bead mainly by grinding, which may cause not only the grinding of the welding bead but also the grinding of the tubing. And, in this case, the thickness of the forming tube is thinner has the disadvantage that the corrugated pipe is broken while the fluid moves to high temperature, high pressure.

Thus, there is a need for improvement.

The present invention has been created by the necessity as described above, because the circular support rod is installed in the forming pipe and the roller is moved horizontally on the outside to press the weld bead formed in the forming pipe flat using a roller It is an object of the present invention to provide a welding bead peening device for a molded pipe for bellows pipe, which can significantly reduce the thickness of the weld bead while preventing an increase in the thickness of the weld bead.

Welding bead pinning apparatus of the bellows pipe forming tube according to an embodiment of the present invention in order to achieve the above object, the frame, which is horizontally connected to the frame, is located on the bottom surface of the weld bead of the forming pipe for corrugated pipe A roller portion which is installed on the support portion, the frame and positioned above the welding bead of the forming tube placed on the support portion to pressurize the welding bead to make the roller bead flat, and the frame which allows the roller portion to move horizontally. It includes a horizontal moving unit is installed.

In addition, the frame is a lower frame for supporting the load from the bottom, the vertical frame is installed from the lower frame to the upper, and the vertical frame for fixing the support, horizontally installed at the upper end of the vertical frame, the roller And an upper frame for fixing the horizontal moving part.

In addition, the support portion is fixed to the vertical frame, the support rod having a circular cross section, the installation hole is formed horizontally in the vertical frame so that the support rod is inserted, and the support rod inserted into the installation hole fixed with a plurality of fastening members. It characterized in that it comprises a fixing member formed in the vertical frame to.

In addition, the supporting rod is pressed by the roller portion from the bottom of the welding bead formed in the forming tube by the pressing action, if the wear is not supported by the welding bead accurately, loosen the fastening member and the supporting rod in the fixing member After rotating a predetermined angle to reassemble, it is characterized in that it is used repeatedly.

The roller unit may include a roller which is positioned above the weld bead outside of the forming tube and moves horizontally, a support member supporting a plurality of side plate bodies so that the roller is rotatable by a support shaft, and connected to the support member. It characterized in that it comprises a power member for raising and lowering the roller by the shaft, and the installation block is fixed to the power member, and connected to the horizontal moving portion to move horizontally.

In addition, the installation block, characterized in that the movement is assisted by a pair of horizontal guide member fixed to the frame.

The horizontal moving unit may include a motor fixed to the frame, a screw shaft member axially coupled to the motor to rotate, and a moving block coupled to the screw shaft member and horizontally moving the coupled roller part. It is characterized by.

In addition, the horizontal movement of the roller portion, characterized in that it further comprises a stopping portion provided in the frame to prevent the forming tube is pushed in the moving direction of the roller portion.

The stopper may include a fixed shaft connected to the frame, a cylinder installed on a fixed body coupled to the fixed shaft, and a stopper connected to the shaft of the cylinder to support one end of the forming tube. It features.

As described above, when the welding bead peening device for the bellows tube forming tube according to the present invention is used, a welding bead formed in the forming tube by installing a circular support rod in the forming tube and having a roller moving horizontally outside By pressing the flat with a roller, it is possible to significantly reduce the thickness of the weld bead while preventing the stretching of the forming tube.

Hereinafter, with reference to the accompanying drawings will be described the welding bead pinning apparatus of the bellows pipe forming tube according to an embodiment of the present invention.

In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

Figure 3 is a front view of the welding bead pinning apparatus of the bellows tube forming tube according to an embodiment of the present invention, Figure 4 is a side view of the welding bead pinning apparatus of the bellows tube forming tube according to an embodiment of the present invention, 5 is a front view of the roller portion of the welding bead pinning apparatus according to an embodiment of the present invention, Figure 6 is a side view of the roller portion of the welding bead pinning apparatus according to an embodiment of the present invention.

3 to 6, the configuration of the welding bead pinning device 10 of the bellows pipe forming tube according to an embodiment of the present invention, the frame 20, the frame 20 is connected horizontally, corrugated pipe ( 1) welding of the forming pipe 2 installed on the supporting part 30 and the frame 20 located on the inner bottom surface of the welding bead 4 of the forming pipe 2 and placed in the supporting part 30. Located in the upper side of the bead (4), the roller portion 50 to press the welding bead (4) to flatten, and the horizontal moving portion provided in the frame (20) for horizontally moving the roller portion ( 40).

The frame 20 includes a lower frame 22 supporting a load at a lower portion thereof, a vertical frame 24 installed vertically from a lower frame 22 at an upper portion thereof, and fixing a support portion 30, and a vertical frame ( It is installed horizontally at the upper end of the 24, and comprises an upper frame 26 for fixing the roller portion 50 and the horizontal moving portion 40.

3, the lower frame 22 is widely spread in the left and right directions to evenly support the load, and has a pedestal to support the foot when the worker works.

Then, the support bracket 23 is connected to the side of the vertical frame 24 and the upper surface of the lower frame 20 so as to support the lower frame 20 and the vertical frame 24 to the left and right sides.

It is preferable that the support brackets 23 are formed in a plate shape, and four of them are formed on each of the left and right sides.

In addition, the support part 30 is fixedly installed on the vertical frame 24, and is formed horizontally on the vertical frame 24 so that the support rod 32 having a circular cross section and the support rod 32 are inserted and installed. And a fixing member 36 formed on the vertical frame 24 to fix the mounting hole 34 and the supporting rod 32 inserted into the mounting hole 34 with a plurality of fastening members 38.

The outer diameter of the supporting rod 32 is formed to about 20cm, preferably having an error range of ± 20%.

When the support rod 32 presses the weld bead 4 formed on the forming pipe 2 by the pressing action of the roller unit 50 at the bottom, and the support bead does not support the weld bead 4 accurately, By loosening the fastening member 38 and rotating the support rod 32 at a fixed angle by the fixed member 36, and then reassembled, it can be used repeatedly.

That is, when the supporting rod 32 is fixed in one direction and used for a long time, the bottom surface of the weld bead 4 of the weld portion 3 formed in the longitudinal direction along the forming pipe 2 located on the upper side and Since wear is made while causing friction, the fastening member 38 is released from the fixing member 36, and the support rod 32 is rotated at an angle, and then assembled and reused.

The roller part 50 is a roller 66 which is located above the welding bead 4 outside of the forming pipe 2, and moves horizontally, and the several side surface so that the roller 66 can be rotated by the support shaft 64. As shown in FIG. The support member 60 which supports the plate body 62, the power member 54 which raises and lowers the said roller 66 by the shaft 56 connected to the support member 60, and the power member 54 are fixed And an installation block 52 connected to the horizontal moving part 40 to move horizontally.

The roller 66 has a bearing provided between the support shafts 64 so that the roller 66 can be rolled smoothly. The roller 66 moves downward by a lifting action of the power member 54 and moves horizontally by the horizontal moving part 40. The upper side of the welding bead 4 is pressurized, and therefore the upper and lower sides of the welding bead 4 are lowered at the same time because the upper side and the lower supporting rod 32 are pressed simultaneously.

By using this method of the present invention, it is possible to process the difference between the thickness T2 of the weld bead 4 and the thickness T1 of the forming tube 2 within 10% range.

When the difference in thickness is less than 10%, when the molded pipe 2 is used as the corrugated pipe 1, it is possible to prevent breakage due to high temperature and high pressure and to be advantageously applied to the stretching.

The power member 54 uses either a hydraulic cylinder or a pneumatic cylinder. Of course, it is possible to apply a power member consisting of a rack gear, a pinion gear and a motor, and if it is movable, any configuration can be applied.

The installation block 52 may be made of one block or several blocks may be assembled by a fastening member to form one block.

It is preferable that the installation block 52 is assisted with movement by a pair of horizontal guide members 58 fixed to the frame 20. In particular, the horizontal guide member 58 is preferably fixed to the upper frame (26).

The horizontal guide member 58 is preferably made of an LM guide (LM guide).

In addition, when the roller 66 is lifted by the cylinder, which is the power member 54, the lifting guide member 59 may be further provided on the installation block 52 and the support member 60 so as to stably move. .

The lifting guide member 59 includes one or more guide holes formed in the installation block 52, and guide shafts formed in the support member 60 to move along the guide holes.

The horizontal moving part 40 is coupled to the motor 42 fixed to the frame 20, the screw shaft member 44 axially coupled to the motor 42 to rotate, and the screw shaft member 44, And a moving block 46 for horizontally moving the roller unit 50.

The motor 42 is preferably fixed by a bracket fixed to one side of the vertical frame 24 of the frame 20.

Welding bead pinning apparatus 1 according to an embodiment of the present invention, the frame 20 to prevent the forming tube 2 is pushed in the moving direction of the roller portion 50 when the roller portion 50 is moved horizontally It further comprises a stopper 70 provided in).

The stopper 70 includes a fixed shaft 72 connected to the frame 20, a cylinder 76 provided on a fixed body 74 coupled to the fixed shaft 72, and a shaft of the cylinder 76. And a stopper 78 connected to and supporting one end of the forming tube 2.

The fixed shaft 72 is preferably formed in the vertical frame 24 of the frame 20.

As shown in FIG. 3, the stopper 78 is formed in a plate shape so as to support one end of the forming tube 2 regardless of the size of the forming tube 2, and when the size of the forming tube 2 is large. The support tube 79 may be further provided while supporting the forming tube 2.

In addition, when the size of the forming tube 2 is large, the lower support portion 80 which is fixed to the vertical frame 24 to support one lower side of the forming tube 2 may be further provided.

It is preferable that the lower support part 80 is formed in the shape of the rod-shaped object of the circular shape or polygon shape which lengthened up and down.

Or less, on the basis of the accompanying drawings to look at the action of the welding bead pinning apparatus of the bellows tube for forming tube according to an embodiment of the present invention.

As shown in Figs. 3 to 6, first, the weld 2 formed in the longitudinal direction is formed using a welding device not shown in the forming pipe 2 for the corrugated pipe 1.

At this time, the welding bead 4 protruding upward and downward is formed in the welding part 2 of the shaping | molding tube 2.

In this way, in order to remove the welding bead 4, the forming tube 2 is inserted into the supporting rod 32 so that the welded portion 2 of the forming tube 2 is positioned above the supporting rod 32.

Subsequently, when the motor 42 of the horizontal moving unit 40 is rotated to rotate, the screw shaft member 44 coupled to the motor shaft rotates, and the moving block 46 coupled thereto moves horizontally.

Then, the installation block 52 of the roller unit 50 coupled to the movable block 46 is horizontally moved along the horizontal guide member 58.

At this time, the installation member 52, the power member 54, the support member 60 and the roller 66 are also integrally fixed to move together.

On the other hand, before the horizontal moving part 40 moves, the roller 66 is moved downward by using the power member 54 of the roller part 50 of the forming pipe 2 settled in the supporting rod 32. Press the welding bead (4) by pressing.

In this state, since the horizontal moving part 40 moves horizontally, all the welding beads 4 are pressed and pressed to the same height along the welding part 3 of the shaping | molding pipe 2 settled in the supporting rod 32, You lose.

On the other hand, when the horizontal moving part 40 moves horizontally, by supporting the one end of the shaping | molding tube 2 that the shaping | molding tube 2 is pushed horizontally, the shaping | molding tube 2 moves to the vertical frame 24 direction. Can be prevented from being pushed back.

3, when the size of the forming tube 2 to be processed increases, the stopper 78 is selectively moved up and down by the operation of the cylinder 76, and a part of the forming tube 2 is moved. It can also be hanged on the support groove (79).

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a view showing a conventional general corrugated pipe.

Figure 2 is a state in which a weld bead is formed in the welded portion of the molded tube for a conventional corrugated pipe.

Figure 3 is a front view of the welding bead pinning apparatus of the bellows pipe forming tube according to an embodiment of the present invention.

Figure 4 is a side view of the welding bead pinning apparatus of the bellows pipe forming tube according to an embodiment of the present invention.

Figure 5 is a front view of the roller portion of the welding bead pinning apparatus according to an embodiment of the present invention.

Figure 6 is a side view of the roller portion of the welding bead pinning apparatus according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

2: forming tube 3: welding part

4: weld bead 20: frame

30: support portion 32: support rod

36: fixing member 40: horizontal moving part

44: screw shaft member 46: moving block

50: roller 52: mounting block

54 power member 60 support member

70: stopping portion 74: fixed body

76: cylinder 78: stopper

Claims (9)

frame; A support portion horizontally connected to the frame and positioned on a bottom surface of a weld bead of a molded pipe for corrugated pipe; A roller unit installed on the frame and positioned above the welding bead of the forming tube placed on the supporting part to press the welding bead to flatten it; And It includes a horizontal moving unit which is installed in the frame to enable the roller unit to move horizontally, The roller unit, and the roller to move horizontally located above the weld bead of the forming pipe; A support member for supporting a plurality of side plate bodies such that the roller is rotatable by a support shaft; A power member for elevating the roller by a shaft connected to the support member; Fixing the power member, the welding bead pinning apparatus of the bellows pipe forming tube, characterized in that it comprises a mounting block connected to the horizontal moving portion and the horizontal movement. The method of claim 1, The frame, the lower frame for supporting the load at the bottom; A vertical frame installed vertically from the lower frame and fixing the support part; Weld bead pinning apparatus of the bellows forming tube for the bellows pipe, characterized in that it is installed horizontally at the upper end of the vertical frame, the upper frame for fixing the roller and the horizontal moving portion. The method of claim 1, The support portion is fixed to the vertical frame, the support rod having a circular cross section; An installation hole formed horizontally in the vertical frame such that the supporting rod is inserted and installed therein; Welding bead pinning apparatus of the bellows tube forming tube for the bellows pipe characterized in that it comprises a fixing member formed in the vertical frame to fix the support rod inserted into the installation hole with a plurality of fastening members. The method of claim 3, wherein Wherein the support rod, the welding bead formed in the forming tube by the pressing action of the roller portion at the bottom surface, When the wear bead does not support the welding bead accurately, the welding bead pinning of the bellows forming tube for the bellows pipe, characterized in that it is repeatedly used by releasing the fastening member and rotating the supporting rod at a fixed angle and then reassembled. Device. delete The method of claim 1, The bead pinning apparatus of the bellows forming tube for the bellows pipe, characterized in that the installation block is assisted by a pair of horizontal guide member fixed to the frame. The method of claim 1, The horizontal moving unit, and the motor is fixed to the frame; A screw shaft member axially coupled to the motor and rotating; And a moving block coupled to the screw shaft member and horizontally moving the roller portion coupled thereto. The method of claim 1, The bead pinning apparatus of the bellows pipe forming tube further comprises a stopper provided in the frame to prevent the forming tube from being pushed in the moving direction of the roller unit when the roller unit is horizontally moved. The method of claim 8, The stopping unit includes a fixed shaft connected to the frame; A cylinder installed on a fixed body coupled to the fixed shaft; And a stopper connected to the shaft of the cylinder to support one end of the forming tube.

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