KR20200090395A - Air beveling machines for piping accessories excellent in rotation and running stability - Google Patents

Abstract

The present invention relates to an air beveling machine for a piping component with excellent stability in rotation driving and, more specifically, to a new concept of technology capable of beveling various piping components such as an elbow, a T-shaped pipe and the like, which are hard to bevel due to their short linear section, while smoothly supporting the components. When piping components with a short linear section such as an elbow, a T-shaped pipe and the like need to be improved, an existing beveling machine cannot be used to improve the components because the outer and inner circumferences cannot be tightly supported. According to the present invention, in order to solve such problem, thin outer and inner circumference contact rollers are used to smoothly bevel a piping component while coming in contact with the inner and outer circumferences of a spot adjacent to a linear section of the piping component, and also, as a pair of roller support arms are opened or closed in accordance with the normal and reverse rotation control of a gap control unit, a pair of outer circumference contact rollers can accurately come in contact with the outer circumference regardless of the diameter of the piping component.

Description

Air beveling machines for piping accessories excellent in rotation and running stability

The present invention relates to a technology of a new concept of chamfering while smoothly supporting various piping parts (elbows, T-shaped pipes, etc.) that were difficult to be chamfered due to a short straight section.

In general, at a city gas pipe construction site or an industrial plant piping construction site, the pipe is cut to a length as a pre-work for welding, and then the welding surface (chamfered surface) is cut at a certain angle to the edge of the pipe to cut the welding groove (root) By performing the improvement work to make ), the operator welds the welding surfaces formed on the pipes to each other, so that the cut pipes are easily connected to each other.

However, in the related art, the pipe having a relatively large size during the improvement work has a large amount of chamfering for processing the welding surface, and it is difficult to measure the accurate chamfering amount as well as the time required for processing with a small chamfering machine. This is caused.

Therefore, in the industrial field, a large-capacity chamfer is urgently required to process a welding surface for welding exclusively, as well as the large-capacity chamfer is easy to control the chamfering amount and has the ability to freely adjust the improvement angle. It is a situation that can do everything.

In view of such problems, "patent registration No. 1425824, name/composite processing machine for welding base materials", which has been previously filed and granted patent decision by the applicant of the present invention, has been proposed.

The prior art uses the pair of outer diameter guide rollers spaced apart and the inner diameter guide rollers that can be moved up and down to simultaneously weld the inner and outer diameters of the pipe at the same time regardless of the thickness of the welding base material, or by simultaneously guiding the upper and lower surfaces of the plate material at the same time. In the process of machining, various sizes of welding base materials are smoothly processed, flow is prevented during operation, and the smooth running of the welding base material processing machine is guided to provide excellent work quality and suppress the cutter damage.

However, as the prior art is used for the purpose of improving a pipe having a relatively large diameter and a long straight section, various piping parts 1 such as elbows and T-shaped pipes having a small size and a short straight section 2 as shown in FIG. When improving, the inner and outer diameters cannot be closely supported, and thus, it cannot be used for the purpose of improving the pipe parts.

In addition, it is preferable to operate the chamfering machine using air rather than using electricity because of the risk of electric shock in a special work site such as a shipyard, but the prior art causes unsuitable problems as electricity is used as a power source.

The present invention smoothly chamfers the piping part in a state in which it is grounded to the inside and outside diameter of a point adjacent to the tip of the straight section of the piping part by using a thin outer diameter grounding roller and an inner diameter grounding roller as a means for solving the above problems. Find a technology that enables processing.

In addition, the present invention seeks a technique for freely controlling the amount of chamfer while moving the cutter back and forth by a simple method of rotating the cutter using an air tool and rotating the chamfer adjuster coupled to the tip of the air tool. .

In addition, the present invention is a pair of roller support arm is opened or closed in accordance with the forward and reverse rotation operation of the roller spacer, so that the pair of outer diameter ground rollers can be accurately grounded to the outer diameter regardless of the diameter of the pipe part. Seeking.

In addition, the present invention seeks a technique for the inner diameter ground roller to maintain a grounded state at all times while moving freely up and down in response to a change in the thickness of a pipe using a tension by a ball plunger.

In addition, the present invention allows the auxiliary outer diameter ground roller installed to be movable up and down on the guide support in close contact with the tip of the pipe part to further maintain the rotational stability of the air chamfering machine while additionally grounding the lower outer diameter of the pipe part having a large diameter. Seeking skills.

According to the present invention, a pair of outer diameter ground rollers and inner diameter ground rollers are formed in a thin thickness, so that the outer diameter and inner diameter of the point adjacent to the tip of the pipe section with a short straight section can be accurately supported by three points, thereby rotating the air chamfering machine. It provides the effect of smoothly chamfering the pipe part exclusively while maintaining stability without derailing from the pipe part during running.

In addition, the present invention provides an effect of preventing the occurrence of an electric shock accident by excluding the use of electricity in a special work site adjacent to water by driving the air chamfer using air as a power source.

In addition, according to the present invention, as the pair of roller support arms open/close at the same time, the space between the pair of outer diameter ground rollers installed on the roller support arm is adjusted, and the ground is accurately grounded regardless of the diameter of the pipe part. It can chamfer the piping parts of, providing a very wide range of work.

Moreover, the inner diameter grounding roller, which is grounded to the inner diameter of the pipe part, maintains tension so that it can move up and down in response to the thickness change (bending degree) of the pipe part, so that it can always remain grounded without being spaced apart. It prevents the phenomenon that it does not, and provides a very good effect on work quality.

In addition, the present invention is a standard by supporting two points of the upper outer diameter of the pipe part using the pair of outer diameter grounding rollers and additionally supporting one lower outer diameter of the pipe part by using a separate auxiliary outer diameter grounding roller. It provides the effect of significantly improving the quality of the chamfering process by more reliably maintaining the rotational running stability of the air chamfering machine when chamfering a large pipe part.

1 is a perspective view of an air chamfer for piping attachment to which the present invention is applied
Figure 2 is a front view of the air chamfer for piping parts of the present invention
Figure 3 is a rear view of the air chamfer for piping parts of the present invention
Figure 4 is a front view of the outer diameter grounding roller and the inner diameter grounding roller of the present invention, the pipe parts are grounded
Figure 5 is a cross-sectional side view of a pipe part grounded to the outer diameter ground roller and the inner diameter ground roller of the present invention
6 is a front view of a state in which the air chamfer for piping attachment of the present invention rotates
7 is a front sectional view of a state in which the roller support arm is opened according to the rotation of the bidirectional screw shaft of the present invention
Figure 8 is an enlarged cross-sectional view of the vertical movement state of the cutter according to the operation of the cutter movement control device of the present invention
Figure 9 is a front view of the grounded state of the outer diameter of the present invention grounded in the pipe part of a large diameter by opening the gap
Figure 10 is a cross-sectional side view of the installation state of the present invention the ground roller and ball plunger
11 is a front view and a side sectional view of the installation state of the outer diameter ground roller of the present invention.
12 is an exemplary view of a conventional piping accessory

A preferred embodiment for more specifically implementing the solution means of the problem to be solved by the present invention will be described.

Referring to the overall configuration according to a preferred embodiment of the present invention in accordance with the accompanying drawings, guide support 10, air tool 20, bi-directional screw shaft 50, a pair of moving blocks 60, a pair It can be seen that the roller support arm 70, the inner diameter of the ground roller 80 is divided into components.

Hereinafter, the present invention made of the above-described schematic configuration will be described in more detail to facilitate implementation.

The guide support 10 of the present invention is supported in a state in close contact with the tip of the pipe part 1 to be chamfered as shown in Figs. 5 to 6, so that the air chamfer for the pipe part along the circumferential direction of the pipe part 1 By providing a guide surface when rotating (B), the outer diameter ground roller 73 and the inner diameter ground roller 80 serve to guide while traveling while maintaining a straight path. Cutter through hole 11 through which 21) passes is formed.

The air tool 20 is integrally attached to the rear surface of the guide support 10 at the rear of the cutter through hole 11, and the cutter 21 that rotates using the air of the air tool 20 is the cutter through hole 11 By passing through and being exposed to the front, the pipe part 1 in close contact with the front surface of the guide support 10 can be chamfered.

When the high pressure air is injected through the air injection port formed at the rear end of the air tool 20, high pressure air is supplied into the stator through the air hole formed in the sealing plate and the stator through the air interruption valve. Since the rotational power of the rotor shaft rotating by the air supplied together is transmitted to the cutter 21, the pipe part 1 can be chamfered, and the technology for the air tool 20 is already known, so the present invention In the description, further detailed drawings will be omitted.

In addition, although the air tool 20 may be directly attached to the rear surface of the guide support 10, as shown in FIGS. 5 and 8, the cutter 21 is moved back and forth to the rear end of the chamfering adjuster 30 to adjust the chamfering amount. It is directly connected, and the front surface of the chamfering amount adjuster 30 is attached to the rear side of the guide support 10, so that the chamfering amount can be freely adjusted while moving the cutter 21 back and forth by a simple method of rotating the chamfering adjuster 30. Provides special effects.

A shaft housing 40 is installed at an upper end of the guide support 10, and the mounting plate 41 protruding from the rear lower end is guided while the shaft housing 40 is seated on the upper end of the guide support 10. After being in close contact with the back of the support 10, it penetrates through the fastener 42 and is integrally mounted to the guide support 10, and the inner space 43 has lower portions on both sides with the central partition wall 44 interposed therebetween. It is formed to open.

On both sides of the shaft housing 40, a bushing 45 communicating with the inner space 43 is fitted, and the bidirectional screw shaft 50 is rotatably installed through the bushing 45 and the partition wall 44. However, the left screw 51 and the right screw 52 formed on both sides of the bidirectional screw shaft 50 are located in both inner spaces 43, and the roller spacing adjustment 53 is integrally coupled to the front end of the one side. The two-way screw shaft 50 can rotate smoothly according to the rotational operation of the roller spacing adjuster 53.

A pair of moving blocks 60 are screwed to the outside of the left screw 51 and the right screw 52 of the bidirectional screw shaft 50, and a pair of roller support arms 70 are provided at the bottom of the moving block 60. ) A circular joint groove 61 for connection is formed to be interlocked.

On both sides of the cutter through hole 11, a pair of roller support arms 70 facing each other on the front surface of the guide support 10 are inclined while being inclined toward the lower outward, so that the upper side penetrates through the hinge shaft 71 and rotates. The joint 72, which is installed to be possible, and protrudes from the upper end of the roller support arm 70, is connected to be fitted into the joint groove 61 of the moving block 60, and at the lower end, the piping parts 1 to be chamfered respectively The outer diameter ground roller 73, which is grounded to the outer diameter of the, is rotatably installed.

Here, the roller support arm 70 is formed with a support protrusion 74 protruding inward from the lower side, an insertion recess 75 is recessed at the lower end of the support protrusion 74, and the support protrusion 74 is formed. The outer diameter grounding roller 73 is rotatably installed on the roller support plate 76 attached to the front surface, and the outer diameter grounding roller 73 is inserted into the insertion recess 75 so as to be as close to the guide support 10 as possible. By maintaining, the straight section can be smoothly grounded to the outer diameter of the point as close as possible to the tip of the pipe part (1), and the roller support plate (76) is detached to easily replace and maintain the outer diameter ground roller (73). Provides convenience.

In addition, a roller bracket 81 is installed on the front surface of the lower guide support 10 of the cutter through hole 11, and the roller bracket 81 has an inner diameter ground roller 80 that is grounded to the inner diameter of the pipe fitting 1 Is rotatably installed.

Accordingly, the two outer diameter ground rollers 73 and the inner diameter ground roller 80 installed on the pair of roller support arms 70 are formed to have a small thickness with a small degree of projecting forward relative to the front surface of the guide support 10. As a result, as shown in Fig. 8, the outer diameter and inner diameter of the point adjacent to the front end of the pipe section 1 having a short straight section can be accurately supported at three points, so that the pipe section 1 during rotational driving of the air chamfering machine B for pipe section 1 It provides a special effect to smoothly chamfer the pipe part (1) exclusively while maintaining stability without being derailed.

Moreover, according to the forward and reverse rotation operation of the bidirectional screw shaft 50, the pair of moving blocks 60 are moved simultaneously, while the pair of roller support arms 70 are opened or closed while the pair of outer diameter ground rollers 73 are mutually connected. As a method of adjusting the space between the pipes, even if the diameters of the pipe parts 1 are different as shown in FIGS. 7 and 9, the pipe parts 1 of various standards are smoothly grounded by being accurately grounded to the outer diameter of the pipe parts 1 regardless of this. Being chamfered, the working range provides a very wide range of effects.

On the other hand, the cutter 21 when the air chamfering unit (B) for piping attachment is mounted on the piping attachment (1) is moved upwards to avoid interference with the piping attachment (1) and the initial start (rotation) In order to enter the edge of the pipe part 1 for the chamfering process after it is started, the technique for allowing the chamfering amount adjuster 30 and the cutter 21 to move up and down is grafted in consideration of the need to move downward.

As a technical configuration for this, the chamfering adjuster 30 is not directly fixed to the guide support 10 but is integrally attached to the vertical moving plate 31, and the vertical moving plate 31 is a rear surface of the guide support 10 With the step in the center, the guide bolt 32 penetrates through the guide holes 33 formed on both sides of the vertical moving plate 31 in the state of being inserted into the recessed sliding groove 12 in the vertical direction and screwed into the guide support 10 By being combined, the vertical moving plate 31 can slide up and down.

And the cutter 21 exposed to the front of the chamfering adjuster 30 is exposed forward through the cutter exposure hole 34 and the cutter through hole 11 formed in the vertical moving plate 31, and the shaft housing ( The screw shaft 36 formed at the lower end of the cutter movement control unit 35 rotatably installed on the fixed bracket 35a attached to the upper center of the 40 penetrates the upper surface of the shaft housing 40 to move the vertical moving plate ( 31) is screwed through the movable bracket (37) integrally attached to the rear surface.

Therefore, according to the rotation operation of the cutter movement control mechanism 35, the movement bracket 37 moves up and down on the screw shaft 36, and in connection therewith, the vertical movement plate 31 and the cutter 21 smoothly move up and down. By moving, the installation of the air chamfering machine (B) for piping attachment is smooth, and it is possible to prevent overload and damage to the cutter (21) occurring when the cutter (21) initially enters the corner of the piping attachment (1). It provides an effect.

In addition, the inner diameter ground roller 80 of the present invention responds appropriately to minute changes in the thickness of the pipe part 1 when performing rotational rotation along the inner diameter during chamfering, while freely moving up and down while always moving the inner diameter of the pipe part 1 In order to maintain the grounded state, the technology is additionally grafted.

As a technical configuration for this, the roller bracket 81 has long holes 82 formed on both sides vertically, and through the long holes 82, the guide bracket 83 is screwed to the guide support 10 and the roller brackets 81 is installed to be movable up and down, the lower side of the roller bracket 81, a fixed block 84 is installed, the ball plunger 85 is screwed through the fixed block 84 and the ball The ball 86 of the plunger 85 is in close contact with the bottom surface of the roller bracket 81 to provide a tension that allows the inner diameter ground roller 80 to move up and down, thereby changing the thickness of the pipe part 1 (bending degree). Correspondingly, while moving up and down, it is possible to maintain the grounded state at all times without being separated from the inner diameter of the pipe part 1, thereby preventing the chamfering process from being partially performed, thereby significantly improving the working quality.

In addition, the present invention is an air chamfering machine for pipe parts (B) while additionally grounding the lower outer diameter of the pipe parts (1) using the auxiliary outer diameter ground roller (90) when chamfering a large pipe part (1) with a large diameter. Technology to maintain stability according to the rotational driving of the vehicle is additionally applied.

As a technical configuration for this, a vertical guide 14 is formed in the center between the weight reduction holes 13 formed to reduce the weight of the guide support 10 on both lower sides of the guide support 10, and the vertical guide ( 14) An auxiliary outer diameter ground roller 90, which is grounded to the lower outer diameter of the pipe part 1, is rotatably installed on the roller bracket 91 that is installed to move up and down and additionally adds the lower outer diameter of the pipe part 1 It provides a special effect of maintaining the rotational stability of the air chamfering machine (B) for piping attachment more reliably while supporting one point.

Here, the roller brackets 91 in which the auxiliary outer diameter ground rollers 90 are installed are in front of and behind the front and rear gaps of the vertical guide 14, respectively, and the front support plates 92, 92a, and the rear support plates 93, respectively. It is possible to move up and down on the vertical guide 14 by being integrally coupled through a plurality of fasteners 94 together with 93a, while the roller bracket 91, the front support plate 92a disposed on the lower side, vertical The guide hole 15 formed up and down on the guide 14 and the rear support plate 93a disposed on the lower side are coupled by penetrating the clamp lever 95 so that the pressing ring 98 according to the rotation operation of the clamp lever 95 It is possible to control the vertical movement of the roller bracket 91.

In addition, the clamp lever 95 penetrates the moving hole 91a formed in the roller bracket 91, and a plurality of fasteners 94 penetrate the long hole 91b formed on both sides of the moving hole 91a. The ball 97 of the ball plunger 96 coupled and screwed to the rear support plate 93 disposed on the upper side provides the tension in close contact with the upper surface of the rear support plate 93a disposed on the lower side, thereby providing the front surface. Auxiliary outer diameter ground roller 90 installed on the roller bracket 91 integrally coupled with the support plate 92 and the rear support plate 93 moves up and down and responds to changes in the thickness (bending degree) of the pipe part 1 It is possible to always maintain the grounded state on the outer diameter of the accessory (1).

On the other hand, reference numeral 17 corresponds to a rotating handle that the operator grasps and turns by hand to facilitate rotation when the air chamfering machine B for piping is rotated.

B: Air chamfer for piping parts 1: Piping parts
2: Straight section 10: Guide support
11: Cutter through 12: Sliding groove
14: vertical guide 15: guide hole
20: air tool 21: cutter
30: chamfering adjuster 31: vertical moving plate
32, 83: guide bolt 33: guide hole
34: cutter exposed hole 35: cutter movement control tool
36: screw shaft 37: moving bracket
40: shaft housing 41: mounting plate
42, 94: fastener 43: interior space
45: bushing 50: bidirectional screw shaft
51: left screw 52: right screw
53: roller spacer 60: moving block
61: joint hole 70: roller support arm
71: hinge axis 72: joint
73: outer diameter ground roller 74: support protrusion
75: insertion recess 76: roller support plate
80: inner diameter ground roller 81, 91: roller bracket
82, 91b: long hole 84: fixed block
85, 96: Ball plunger 86, 97: Ball
90: auxiliary outer diameter ground roller 91a: moving hole
92, 92a: front support plate 93, 93a: rear support plate
95: clamp lever

Claims (7)

A plate-shaped guide support (10) that is selectively in close contact with the front end of the piping part (1) and has a cutter through hole (11) formed thereon;
The air tool 20 is integrally attached to the rear surface of the rear guide support 10 of the cutter through hole 11 and rotates the cutter 21 exposed forward through the cutter through hole 11 using air. ;
The guide support 10 is installed rotatably through both sides of the shaft housing 40 installed on the upper end, and left screws 51 and right screws 52 are formed on both sides, and roller spacing adjustments are provided at one end. A bidirectional screw shaft 50 to which 53 is coupled;
A pair of movable blocks 60 which are screwed to the outside of the left and right screws 51 and 52 and formed with a joint groove 61 at the bottom;
It is rotatably installed through the hinge shaft 71 so as to face each other on the front surfaces of the guide supports 10 on both sides of the cutter through hole 11, and the joint 72 formed to protrude at the upper end fits into the joint groove 61 A pair of roller support arms 70 which are connected and have an outer diameter ground roller 73 rotatably installed at the bottom;
Air chamfer for piping attachment with excellent rotational running stability, characterized in that it consists of an inner diameter ground roller (80) rotatably installed on a roller bracket (81) installed on the front side of the lower guide support (10) of the cutter through hole (11). .
According to claim 1,
In accordance with the forward and reverse rotation operation of the bidirectional screw shaft 50, the pair of moving blocks 60 are simultaneously moved while opening or closing the pair of roller support arms 70 and the pair of outer diameter ground rollers 73 between each other. An air chamfer for piping parts with excellent rotational running stability characterized by being grounded to an outer diameter accurately regardless of the diameter of the piping part (1) by adjusting the spacing.
According to claim 1,
The air tool 20 is directly connected to the rear end of the chamfering amount adjuster 30 that moves the cutter 21 back and forth to adjust the chamfering amount, and the front surface of the chamfering adjuster 30 is on the back of the guide support 10. Air chamfer for piping parts with excellent rotational running stability characterized by being attached.
According to claim 3,
The chamfering regulator 30 is integrally attached to the vertical moving plate 31, and the vertical moving plate 31 is capable of sliding up and down on the sliding groove 12 formed with a step on the back of the guide support 10 While installed, the cutter 21 exposed to the front of the chamfering regulator 30 passes through the cutter exposed hole 34 and the cutter through hole 11 formed in the vertical moving plate 31, while being exposed to the front. The screw shaft 36 formed at the bottom of the cutter movement control unit 35 rotatably installed in the upper center of the shaft housing 40 penetrates the upper surface of the shaft housing 40 and is attached to the vertical moving plate 31. Piping excellent in rotational running stability, characterized in that the vertical moving plate (31) and the cutter (21) move up and down according to the rotational operation of the cutter movement control unit (35) through screwed through the movable bracket (37). Attached air chamfering machine.
According to claim 1,
The roller bracket 81 has long holes 82 formed on both sides of the roller bracket 81, and the roller brackets 81 are up and down by guide bolts 83 screwed to the guide support 10 through the long holes 82. The ball 86 of the ball plunger 85 screwed through the fixed block 84 installed on the lower side of the roller bracket 81 is moved to the inner diameter in a state of being in close contact with the bottom surface of the roller bracket 81 An air chamfer for piping attachment with excellent rotational running stability, characterized in that the ground roller (80) provides tension to move up and down.
According to claim 1,
On the lower side of the guide support 10, vertical guides 14 are formed between the weight-reducing holes 13 formed on both sides back and forth, and the roller brackets 91 are installed to move up and down on the vertical guides 14 In the air chamfer for piping parts having excellent rotational running stability, characterized in that the auxiliary outer diameter grounding roller 90 is grounded to the lower outer diameter of the piping part (1).
According to claim 1,
The roller support arm 70 has a support protrusion 74 protrudingly formed at a lower side, an insertion recess 75 is recessed at a lower end of the support protrusion 74, and a roller attached to the front surface of the support protrusion 74 Outer diameter ground roller 73 rotatably installed on the support plate 76 is inserted into the insertion recess 75, the air chamfer for piping attachment excellent in rotational running stability, characterized in that close to the guide support (10).

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