WO2016106754A1

WO2016106754A1 - Pipe forming machine and gas protection system thereof

Info

Publication number: WO2016106754A1
Application number: PCT/CN2014/096066
Authority: WO
Inventors: 谷晓雨
Original assignee: 深圳市大富方圆成型技术有限公司
Priority date: 2014-12-31
Filing date: 2014-12-31
Publication date: 2016-07-07
Also published as: CN107405714A; CN107405714B

Abstract

A pipe forming machine and a gas protection system thereof. The gas protection system (11) comprises a first gas protection mechanism (110). The first gas protection mechanism (110) comprises a first pipe section (111). The first pipe section (111) is arranged in the lengthwise direction of a metal sheet and is extended from a first predetermined position before two side edges (101) are fitted together to a second predetermined position after the two side edges (101) are fitted together and located within a metal pipe, thus providing a welding protection gas to the second predetermined position. By such means, a sufficient amount of the welding protection gas can be provided, thus preventing welding effects from being affected by the welding protection gas not reaching a welding position due to the air pressure produced by welding when the welding protection gas is provided on the exterior of the metal pipe.

Description

Pipe forming machine and gas protection system thereof

【技术领域】[Technical Field]

The invention relates to the field of welding technology, and in particular to a pipe forming machine and a gas protection system thereof.

【背景技术】【Background technique】

In the process of welding, it is usually necessary to add a welding shielding gas. In the prior art, the welding shielding gas is usually disposed on the same side as the welding torch, thereby providing welding shielding gas to the welding position. For example, when an article of a tubular structure is formed from a metal sheet, both sides of the metal sheet are bent toward the opposite sides, and then the position of the butt joint is welded by the welding torch, and the metal sheets are joined to form a tubular shape. The structure is therefore usually provided with a welding torch outside the tubular structure, thereby facilitating the welding of the mating position. In the prior art, the pipe section providing the welding shielding gas is also usually disposed outside the article of the tubular structure to provide welding shielding gas while welding.

However, during the welding process, air pressure is generated in the opposite direction to the welding position, which causes an opposite pressure to the welding shielding gas supplied from the pipe section at the same side of the welding torch, reducing the shielding gas reaching the welding position, thereby reducing The quality of the weld.

【发明内容】 [Summary of the Invention]

The technical problem mainly solved by the present invention is to provide a pipe forming machine and a gas protection system thereof, which can provide sufficient shielding gas, thereby improving the quality of welding.

In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a gas protection system for a pipe forming machine for gradually positioning in the width direction of a metal sheet along the length direction of the metal sheet. The two side edges are joined to form a metal pipe, and the opposite side edges are welded, wherein the gas protection system comprises a first gas protection mechanism, and the first gas protection mechanism comprises a first pipe section, and the first pipe section The metal sheet is disposed in the longitudinal direction and extends from a first predetermined position before the mating of the side edges to a second predetermined position after the side edges are joined and is inside the metal pipe, thereby providing welding protection to the second predetermined position. gas.

Wherein, the second predetermined position is a position where the both side edges are welded or an upstream position where the both side edges are welded.

The first gas protection mechanism further includes a second pipe segment, the second pipe segment is connected to the first pipe segment at a first predetermined position, and is bent relative to the first pipe segment, and the welding shielding gas is transmitted to the first pipe segment through the second pipe segment.

Wherein, the gas protection system further comprises a pipe section fixing mechanism, wherein the pipe section fixing mechanism comprises a bottom and a top parallel to each other, further comprising a connecting portion connecting the bottom and the top, wherein the bottom is fixed on the fixing table, the top is provided with a fixing hole, and the second pipe section is worn The fixing hole is passed through to fix the second pipe section through the fixing hole.

Wherein, a slot is provided on the top, and the slot is communicated with the fixing hole to clamp the second pipe segment having an outer diameter larger than the inner diameter of the fixing hole.

Wherein, the gas protection system further comprises a second gas protection mechanism, the second gas protection mechanism comprising a third pipe segment and a fourth pipe segment, wherein the third pipe segment is located downstream of the position where the two side edges are welded and is sleeved on the periphery of the metal pipe The fourth pipe section is in communication with the third pipe section and provides welding protection gas between the third pipe section and the metal pipe.

The second gas protection mechanism further includes a fixing block. The fixing block is provided with a first fixing hole, and the third pipe segment is inserted and fixed in the first fixing hole, and the third pipe segment is disposed on the sidewall of the first fixing hole. The through hole is further provided with a second fixing hole, the second fixing hole is in communication with the through hole, and the fourth pipe segment is inserted and fixed in the second fixing hole, and then passes through the through hole to the third pipe segment and the metal pipe Provide welding protection gas.

Wherein, the welding shielding gas comprises a unit gas, or a binary gas mixture, or a ternary mixture gas.

Wherein, the unit gas is argon or helium, the binary mixture is argon and helium gas mixture, or argon gas and carbon dioxide gas mixture, or argon gas and helium gas mixture gas, or argon gas and hydrogen gas mixture, The ternary mixture is a mixture of helium, argon and nitrogen.

In order to solve the above technical problems, the present invention adopts a technical solution of providing a pipe forming machine for gradually arranging both side edges in the width direction of the metal sheet along the length direction of the metal sheet. And forming a metal pipe and welding the opposite side edges; the pipe forming machine comprises a gas protection system and a pipe collection system, wherein the gas protection system comprises a first gas protection mechanism, and the first gas protection mechanism comprises a first pipe section, The first pipe section is disposed along the length direction of the metal sheet and extends from a first predetermined position before the abutting of the side edges to a second predetermined position after the two side edges are joined and is inside the metal pipe, and further to the second predetermined The position provides a welding protection gas; the pipe collecting system comprises a first bracket, a turntable, a second bracket, a pressure holding wheel and a transmission mechanism, and the turntable and the pressure holding wheel are respectively rotatably supported on the first bracket and the second bracket, and the transmission mechanism drives the turntable to rotate The first rotating shaft rotates, and the rotating wheel includes an annular supporting portion disposed around the first rotating shaft, and an outer peripheral surface of the pressing wheel is provided for receiving a groove of the pipe, the pressing wheel presses the metal pipe on the outer peripheral surface of the annular support portion of the turntable, and synchronously rotates with the second rotating shaft parallel to the first rotating shaft, thereby winding the metal pipe around the annular support The outer peripheral surface of the portion further presses the metal pipe wound around the outer peripheral surface of the annular support portion toward the side of the annular support portion in the direction in which the first rotating shaft is disposed.

The beneficial effects of the present invention are: different from the prior art, the gas protection system of the pipe forming machine of the present invention comprises a first gas protection mechanism, the first gas protection mechanism comprising a first pipe section, the first pipe section along the metal sheet The length direction is disposed, and extends from a first predetermined position before the opposite sides of the two sides to a second predetermined position after the two side edges are aligned and is inside the metal pipe, thereby providing welding protection gas to the second predetermined position, This can provide welding protection gas inside the metal pipe, can provide sufficient welding protection gas, and avoid the pressure generated by the welding to prevent the welding protection gas from reaching the welding position when the welding protection gas is provided outside the metal pipe, thereby affecting Welding effect.

【附图说明】 [Description of the Drawings]

1 is a schematic structural view of a gas protection system of a pipe forming machine according to an embodiment of the present invention;

2 is a schematic structural view of a pipe collecting system of a pipe forming machine according to an embodiment of the present invention;

Figure 3 is an enlarged schematic view of a circle PN of the tube collection system shown in Figure 2.

【具体实施方式】【detailed description】

Embodiments of the present invention provide a pipe forming machine that includes a gas protection system and a pipe collection system. The gas protection system is used to provide gas protection for the formed pipe during welding. The pipe collection system collects the pipes transported by the gas protection system. See Figure 1 for the specific gas protection system and Figure 2 and Figure 3 for the pipe collection system.

First, please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a gas protection system of a pipe forming machine according to an embodiment of the present invention. The pipe forming machine 10 firstly aligns the two side edges in the width direction of the metal sheet 100 along the length direction of the metal sheet 100, thereby forming the metal pipe 200, and welding the two combined by the welding torch 13 Side edge 101. Among them, the welding gun 13 is disposed outside the metal pipe 200.

Wherein, the gas protection system 11 includes a first gas protection mechanism 110, and the first gas protection mechanism 110 includes a first pipe segment 111, the first pipe segment 111 is disposed along the length direction of the metal sheet 100, and is aligned from the side edges 101 The first predetermined position A extends to a second predetermined position B after the two side edges 101 are aligned and is inside the metal pipe 200, thereby providing a welding shielding gas to the second predetermined position B. Therefore, in this embodiment, the shielding gas can be provided inside the metal pipe 200, and when the welding shielding gas is provided outside the metal pipe 200, the air pressure generated by the welding hinders the welding shielding gas from reaching the welding position, thereby affecting the welding effect.

The first predetermined position A may be a position at which the metal sheet 100 is just beginning to be joined or upstream thereof. The second predetermined position B is a position where the both side edges 101 are welded or is located upstream of a position where the both side edges 101 are welded.

The first gas protection mechanism 110 further includes a second pipe segment 112. The second pipe segment 112 is connected to the first pipe segment 111 at a first predetermined position A, and is bent relative to the first pipe segment 111 to weld the protective gas through the second pipe segment. 112 is transmitted to the first pipe segment 111.

Further, the gas protection system 11 further includes a pipe segment fixing mechanism 120. The pipe segment fixing mechanism 120 includes a bottom portion 121 and a top portion 122 that are parallel to each other, and further includes a connecting portion 123 connecting the bottom portion 121 and the top portion 122, wherein the bottom portion 121 is fixed to the fixed table (Fig. Not shown). The top portion 122 is provided with a fixing hole 124, and the second tube portion 112 passes through the fixing hole 124 to fix the second tube portion 112 through the fixing hole 124.

Further, a slot 125 is formed in the top portion 122, and the slot 125 is in communication with the fixing hole 124. Thereby, the pipe section having an outer diameter larger than the inner diameter of the fixing hole 124 can be clamped, and the adaptability of the fixing is improved.

Preferably, the slot 125 extends from the end of the top 122 away from the connecting portion 123 toward the fixing hole 124, and the slot 125 is the same distance from the two sides 1221 of the top portion 122, wherein the two side edges 1221 are slotted The sides of the extending direction of the 125 are parallel, whereby the pressure on both sides of the slit 125 can be balanced.

Wherein, the gas protection system 11 further comprises a second gas protection mechanism 113 comprising a third pipe section 114 and a fourth pipe section 115, wherein the third pipe section 114 is located downstream of the position B where the two side edges 101 are welded And disposed on the periphery of the metal pipe 200, the fourth pipe section 115 communicates with the third pipe section 114, and provides welding protection gas between the third pipe section 114 and the metal pipe 200.

Further, the second gas protection mechanism 113 further includes a fixing block 116. The fixing block 116 is provided with a first fixing hole 117. The third pipe segment 114 is inserted and fixed in the first fixing hole 117, and the third pipe segment 114 is located at the first. A through hole (not shown) is disposed on a sidewall of the fixing hole 117. The fixing block 116 is further provided with a second fixing hole 118. The second fixing hole 118 communicates with the through hole, and the fourth pipe segment 115 is inserted and fixed. In the second fixing hole 118, a welding shielding gas is further supplied between the third pipe section 114 and the metal pipe 200 through the through hole.

The shielding gas of the embodiment of the present invention may be an inert gas or an active gas. Including unit gas, or binary gas, or ternary gas mixture. Wherein, the unit gas is preferably argon or helium, and the binary mixture is preferably a mixture of argon and helium, or a mixture of argon and carbon dioxide, or a mixture of argon and helium, or a mixture of argon and hydrogen. gas. The ternary mixture is a mixture of helium, argon and nitrogen.

The metal pipe 200 of the present invention extends beyond the end of the third pipe section 114 away from the second predetermined position B of the weld and is connected to the pipe collection system of the pipe forming machine for collection by the pipe collection system. See Figure 2 for the structure of the specific pipe collection system.

As shown in FIG. 2, the pipe collecting system 12 of the pipe forming machine of the present invention includes a first bracket 121, a turntable 122, a second bracket 123, a pressing wheel 124, and a transmission mechanism 125.

The turntable 122 and the pressing wheel 124 are respectively rotatably supported on the first bracket 121 and the second bracket 123. The transmission mechanism 125 drives the turntable 122 to rotate about the first rotating shaft EF. The turntable 122 includes an annular support portion 126 disposed about the first rotational axis EF. The outer peripheral surface of the pressure holding wheel 124 is provided with a recess 127 for receiving the gold tubing 200, as shown in FIG. The pressing wheel 124 presses the metal pipe 200 against the outer circumferential surface of the annular support portion 126 of the turntable 122, and rotates synchronously with the second rotating shaft AB parallel to the first rotating shaft EF with the turntable 122, thereby winding the metal pipe 200 around On the outer peripheral surface of the annular support portion 126, the pressing wheel 124 further pushes the metal pipe 200 wound around the outer peripheral surface of the annular support portion 126 toward the side of the annular support portion 126 in the direction in which the first rotating shaft EF is disposed.

The transmission mechanism 125 includes a motor 1251, a conveyor belt 1252, and gears 1253, 1254. Wherein, the motor 1251 supplies a driving force to the gear 1253 such that the gear 1253 rotates, thereby transmitting the gear 1254 through the conveyor belt 1252, and the gear 1254 further drives the turntable 122.

Wherein, the groove 127 includes a bottom portion 1271 and two side edges 1272, and the side edges 1272 are parallel to each other and are perpendicular to the bottom portion 1271. Or both side edges 1272 form an obtuse angle structure with the bottom portion 1271, such that the recess 127 is a structure in which the opening is enlarged outward.

The second bracket 123 is fixed to the first bracket 121 and is provided with an adjusting mechanism 128 for adjusting the separation distance between the first rotating shaft EF and the second rotating shaft AB. Specifically, when the diameter of the metal pipe 200 becomes larger, the adjusting mechanism 128 adjusts the interval between the first rotating shaft EF and the second rotating shaft AB to become larger. When the diameter of the metal pipe 200 becomes smaller, the adjusting mechanism 128 adjusts the first rotating shaft EF. The interval from the second rotating shaft AB becomes small.

Specifically, referring to FIG. 3, the adjustment mechanism 128 includes a clamping portion 1281 and a resisting portion 1282, wherein the clamping portion 1281 is fixed on the second bracket 123, and the second bracket 123 and the clamping portion 1281 are disposed between An elastic mechanism (not shown) can provide an upward force to the clamping portion 1281. The second rotating shaft AB is inserted into the clamping portion 1281 and is rotatable relative to the clamping portion 1281. The abutting portion 1282 is provided at the top of the clamping portion 1281 for pressing the clamping portion 1281. When the diameter of the metal pipe 200 becomes larger, the abutting portion 1282 moves upward, so that the clamping portion 1281 moves upward under the action of the upward force provided by the elastic structure, thereby causing the second rotating shaft AB to move upward, that is, The interval between the first rotating shaft EF and the second rotating shaft AB becomes large. When the diameter of the metal pipe 200 becomes smaller, the abutting portion 1282 moves downward, so that the clamping portion 1281 moves downward under the force of the abutting portion 1282, thereby driving the second rotating shaft AB to move downward, that is, The interval between the first rotating shaft EF and the second rotating shaft AB is made small.

The turntable 122 further includes a plurality of support bars 129 fixed on one side of the annular support portion 126 and spaced around the first rotation axis EF, and the pressure holding wheel 124 further surrounds the metal that has been wound around the outer circumferential surface of the annular support portion 126. The tubing 200 is urged from the annular support portion 126 onto a plurality of support rods 129.

Here, the diameter of the outer peripheral surface of the annular support portion 126 gradually becomes smaller toward the support rod 129.

Thus, the tubing collection system 12 of the present embodiment can achieve automatic collection of the metal tubing 200, increasing efficiency and providing uniformity of collection.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformation of the present invention and the contents of the drawings may be directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims

A gas protection system for a pipe forming machine, characterized in that the pipe forming machine is used for gradually aligning both side edges in the width direction of the metal sheet along the length direction of the metal sheet, thereby forming a metal pipe, and welding the opposite side edges, wherein the gas protection system comprises a first gas protection mechanism, the first gas protection mechanism comprising a first pipe section, the first pipe section The metal sheet is disposed in a longitudinal direction and extends from a first predetermined position before the mating of the two side edges to a second predetermined position after the two side edges are joined and is inside the metal pipe, and further The second predetermined position provides a welding shield gas.
The gas protection system according to claim 1, wherein the second predetermined position is a position where the both side edges are welded or is located upstream of a position where the both side edges are welded.
The gas protection system of claim 1 wherein said first gas protection mechanism further comprises a second tubular section, said second tubular section joining said first tubular section at said first predetermined location and relative to The first pipe section is bent and the welding shielding gas is transmitted to the first pipe section via the second pipe section.
The gas protection system according to claim 3, wherein said gas protection system further comprises a pipe section fixing mechanism, said pipe section fixing mechanism comprising bottom and top portions parallel to each other, further comprising a joint connecting said bottom and top portions The bottom portion is fixed on the fixing table, and the top portion is provided with a fixing hole, and the second pipe segment passes through the fixing hole to fix the second pipe segment through the fixing hole.
The gas protection system according to claim 4, wherein a groove is provided on the top portion, and the groove is in communication with the fixing hole to sandwich an outer diameter larger than an inner diameter of the fixing hole The second pipe section.
The gas protection system of claim 1 wherein said gas protection system further comprises a second gas protection mechanism, said second gas protection mechanism comprising a third tube section and a fourth tube section, wherein said third tube section Located downstream of the position where the two side edges are welded and sleeved on the periphery of the metal pipe, the fourth pipe section is in communication with the third pipe section, and is directed to the third pipe section and the metal pipe Welding protection gas is provided between.
The gas protection system according to claim 6, wherein the second gas protection mechanism further comprises a fixing block, the fixing block is provided with a first fixing hole, and the third pipe segment is inserted and fixed to the first a through hole is disposed in a sidewall of the third pipe segment located inside the first fixing hole, and the second fixing hole is further disposed on the fixing block, the second fixing hole is The through hole is connected, and the fourth pipe segment is inserted and fixed in the second fixing hole, and the welding shielding gas is supplied between the third pipe segment and the metal pipe through the through hole.
The gas protection system according to claim 1, wherein the welding shielding gas comprises a unit gas, or a binary gas mixture, or a ternary mixture gas.
The gas protection system according to claim 8, wherein the unit gas is argon or helium, the binary mixture is a mixture of argon and nitrogen, or a mixture of argon and carbon dioxide, or argon and Helium gas mixture, or helium gas and nitrogen gas mixture, the ternary gas mixture is helium gas, argon gas and nitrogen gas mixture.
A pipe forming machine, characterized in that a pipe forming machine is used for gradually aligning both side edges in the width direction of the metal sheet along the length direction of the metal sheet, thereby forming a metal pipe and welding the pair The two side edges of the combination;

The pipe forming machine includes a gas protection system and a pipe collection system, wherein the gas protection system includes a first gas protection mechanism, the first gas protection mechanism includes a first pipe section, the first pipe section along the metal sheet a lengthwise direction and extending from a first predetermined position before the mating of the two side edges to a second predetermined position after the two side edges are aligned and inside the metal pipe, and further to the second a welding shielding gas is provided at a predetermined position;

The pipe collecting system includes a first bracket, a turntable, a second bracket, a pressing wheel, and a transmission mechanism, and the rotating wheel and the pressing wheel are respectively rotatably supported on the first bracket and the second bracket. The transmission mechanism drives the turntable to rotate about a first rotating shaft, the turntable includes an annular support portion disposed around the first rotating shaft, and an outer circumferential surface of the pressure holding wheel is provided with a groove for receiving a metal pipe, the pressure Holding a metal pipe on the outer circumferential surface of the annular support portion of the turntable, and synchronously rotating the second rotating shaft parallel to the first rotating shaft, and winding the metal pipe The pressing wheel further pushes the metal pipe wound around the outer circumferential surface of the annular support portion toward the annular support in a direction in which the first rotating shaft is disposed on an outer circumferential surface of the annular support portion One side of the department.
The pipe forming machine according to claim 10, wherein the second predetermined position is a position where the both side edges are welded or a position upstream of a position where the both side edges are welded.
A pipe forming machine according to claim 10, wherein said first gas protection mechanism further comprises a second pipe section, said second pipe section joining said first pipe section at said first predetermined position, and relative to The first pipe section is bent and the welding shielding gas is transmitted to the first pipe section via the second pipe section.
A pipe forming machine according to claim 12, wherein said gas protection system further comprises a pipe section fixing mechanism, said pipe section fixing mechanism comprising bottom and top portions parallel to each other, further comprising a joint portion connecting said bottom portion and said top portion The bottom portion is fixed on the fixing table, and the top portion is provided with a fixing hole, and the second pipe segment passes through the fixing hole to fix the second pipe segment through the fixing hole.
A pipe forming machine according to claim 13, wherein a groove is provided in said top portion, said groove being in communication with said fixing hole to sandwich an outer diameter larger than an inner diameter of said fixing hole The second pipe section.