CN210412973U

CN210412973U - Metal sheet welding device in metal pipe

Info

Publication number: CN210412973U
Application number: CN201921337735.8U
Authority: CN
Inventors: 赵钧; 王春花; 赵成旺
Original assignee: Wuxi Hengye Electric Heater Equipment Co ltd
Current assignee: Wuxi Hengye Electric Heater Equipment Co ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-04-28
Anticipated expiration: 2029-08-16

Abstract

The utility model relates to a metal sheet welding device in a metal tube, which comprises a metal tube, wherein a ventilation cable runs through the metal tube, an electrode holder is arranged on the ventilation cable in the metal tube, a support is arranged in the middle of the electrode holder, insulating wheels are arranged on the electrode holders at two sides of the support through snap springs, and a tungsten needle is arranged on the support; the metal sheet is positioned in the metal tube, and the ventilation cable bypasses the steering wheel and the tension wheel to be communicated with a power supply and an air supply; under the drive of a motor, the ventilation cable moves axially along the metal pipe, the insulation wheel moves relative to the metal pipe under the dragging of the ventilation cable by taking the surface of the metal sheet as a guide, and the needle head of the tungsten needle positioned between the insulation wheels is always attached to the edge of the metal sheet contacted with the inner wall of the metal pipe in the moving process, so that the contact part is subjected to self-fluxing welding under the protection of shielding gas. The utility model has the advantages of simple and compact reasonable structure, realized the welding of the intraductal sheetmetal of metal, promoted intraductal welding efficiency and welding quality, promoted product wholeness ability.

Description

Metal sheet welding device in metal pipe

Technical Field

The utility model belongs to the technical field of the welding auxiliary assembly technique and specifically relates to a sheetmetal welding set in tubular metal resonator.

Background

In the prior art, when the metal sheet is welded in the metal pipe, the process method is lagged behind and complicated in operation, a hole is usually formed in the wall surface of the metal pipe firstly, the metal sheet and the metal pipe are welded from the outside through the hole, and finally the welding mark protruding from the hole is polished.

The treatment mode has low efficiency, is more troublesome for the in-pipe welding of the fine metal pipe, and the welded product can not completely meet the use requirement; under the multiple action of temperature, pressure, inside circulation medium and velocity of flow, there is the potential safety hazard in the tubular metal resonator after the welding, has greatly increased the risk when using.

SUMMERY OF THE UTILITY MODEL

The applicant provides a metal sheet welding device in metal tube with reasonable structure aiming at the defects in the prior art, thereby realizing the automation of the welding of metal sheets in the tube, greatly improving the welding efficiency and the welding quality in the tube, and greatly improving the overall safety performance of the welded product.

The utility model discloses the technical scheme who adopts as follows:

a metal sheet welding device in a metal tube comprises the metal tube, wherein a ventilation cable penetrates through the metal tube, an electrode holder is arranged on the ventilation cable in the metal tube through a cable joint, a support is arranged in the middle of the electrode holder, insulating wheels are sleeved on the electrode holders on two sides of the support, and the insulating wheels are axially positioned through clamp springs; a plurality of tungsten needles are arranged on the support; the tungsten needle further comprises a metal sheet positioned in the metal tube, the vent cable moves axially under the driving of the motor, and the needle head of the tungsten needle is in contact with the edge of the metal sheet and moves when working.

As a further improvement of the above technical solution:

the two ends of the ventilation cable extending out of the metal pipe respectively bypass the plurality of steering wheels, the two ends of the ventilation cable are respectively connected to the two interfaces of the three-way joint, and the other interface of the three-way joint is connected to a power supply and an air source.

A plurality of steering wheels are all arranged on the supporting plate, wherein one steering wheel is a driving wheel; the motor is arranged at the bottom of the supporting plate, and the output end of the motor penetrates through the supporting plate and is fixedly arranged with the driving wheel; and a tension wheel is also arranged on the supporting plate beside the driving wheel, and the ventilation cable bypasses the tension wheel and winds a plurality of turns on the driving wheel.

The electrode holder has the following structure: the ventilation cable comprises a round pipe part, wherein two ends of the round pipe part are respectively connected with the ventilation cable through cable joints; the middle part of the round pipe part extends outwards along the circumferential direction to form a support, and the round pipe parts positioned at two sides of the support are respectively provided with a groove; two ends of the support are respectively provided with a tungsten needle hole, two side faces of the support adjacent to the single tungsten needle hole are respectively provided with a threaded hole, and the threaded holes are communicated with the tungsten needle holes; the end of the support seat beside the single tungsten needle hole is also provided with a plurality of gas outlets.

The tungsten needle is installed in the tungsten needle hole, the fastening piece is installed in the threaded hole, and the single tungsten needle is fixedly installed in the tungsten needle hole through the two fastening pieces.

The structure of the insulating wheel is as follows: the metal tube comprises a wheel body, wherein the wheel body circumferentially comprises an arc-shaped part matched with the inner wall of the metal tube, two ends of the arc-shaped part jointly extend to form a straight part through an arc-shaped transition part, and the straight part is in contact with the surface of a metal sheet; the wheel body is also provided with a through hole, and the insulating wheel is sleeved on the electrode seat through the through hole.

The insulating wheel is an insulating ceramic wheel.

The metal sheet is of a spiral structure, and the insulating wheel rotates relative to the electrode seat under the guidance of the spiral surface of the metal sheet while moving along the axial direction under the dragging of the ventilation cable.

The edges of the two sides of the metal sheet are in contact with the inner wall of the metal tube, and a groove for moving the tungsten needle is formed between the edge of the metal sheet and the inner wall of the metal tube.

The utility model has the advantages as follows:

the utility model has the advantages of being compact in structure, reasonable, and convenient for operation, through motor drive cable of ventilating along tubular metal resonator axial displacement, adorn the tungsten needle syringe needle on the electrode holder all the time just to and pasting the edge of sheetmetal admittedly, the tungsten needle syringe needle removes in the groove that forms between sheetmetal and tubular metal resonator inner wall promptly, the insulating wheel of tungsten needle both sides then uses the surface of sheetmetal to remove as the direction simultaneously, tungsten needle carries out the self-fluxing welding to sheetmetal and tubular metal resonator under the protection of shielding gas, the automation of intraductal welding has been realized, intraductal welding efficiency and welding quality have been improved greatly, the holistic performance of postweld tubular metal resonator has been promoted.

The utility model discloses still include following advantage:

the insulating wheels on the two sides ensure the concentration of the shielding gas around the tungsten needle in the welding process, and play a supporting role when the tungsten needle moves in the tube, so that the fitting relation between the tungsten needle and the edge of the metal sheet is stable and reliable;

the arc-shaped part of the insulating wheel is matched with the inner wall of the metal tube, and the straight part of the insulating wheel is in contact with the surface of the metal sheet, so that the insulating wheel is always attached to the inner wall of the metal tube and the surface of the metal sheet in the circumferential direction in the moving process, the concentration of the protective gas is guaranteed, and the attachment of the tungsten needle head is more reliable;

the ventilation cable is electrified and ventilates at the same time, so that electricity and gas are simultaneously conveyed to a working area between the insulating wheels, and the complexity of the electrified ventilation device is simplified;

the ventilation cable is wound on the driving wheel for multiple circles, so that when the motor drives the driving wheel to rotate, one end of the ventilation cable at two ends of the driving wheel is screwed in and screwed out, the ventilation cable is guaranteed to move axially relative to the metal pipe, and the function of dragging the ventilation cable is achieved;

tungsten needles are respectively installed at two ends of the electrode seat support, the two tungsten needles work simultaneously to weld two sides of the metal sheet respectively, and welding efficiency is improved.

Drawings

Fig. 1 is a schematic view of the present invention.

Fig. 2 is a schematic structural diagram of the present invention (metal pipe is omitted).

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic view of the present invention (omitting the supporting plate).

Fig. 5 is a left side view of fig. 4.

Fig. 6 is a schematic structural view of the electrode holder of the present invention.

Fig. 7 is a sectional view taken along the direction B-B in fig. 6.

Fig. 8 is a partial enlarged view at C in fig. 6.

Fig. 9 is a schematic structural view of the insulation wheel of the present invention.

Wherein: 1. a metal tube; 2. a plenum cable; 3. a cable joint; 4. a metal sheet; 5. an electrode holder; 51. A round tube portion; 52. a groove; 53. a support; 54. a threaded hole; 55. a tungsten pinhole; 56. a gas outlet; 6. a clamp spring; 7. an insulating wheel; 70. a wheel body; 71. an arc-shaped portion; 72. a straight portion; 73. an arc-shaped transition portion; 74. A through hole; 8. a tungsten needle; 9. a steering wheel; 10. a tension wheel; 11. a three-way joint; 12. a power source; 13. a gas source; 14. a motor; 15. and a support plate.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1, 2 and 3, the metal sheet welding device in the metal tube of the present embodiment includes a metal tube 1, a ventilation cable 2 is installed in the metal tube 1 in a penetrating manner, an electrode holder 5 is installed on the ventilation cable 2 located inside the metal tube 1 through a cable joint 3, a support 53 is arranged in the middle of the electrode holder 5, insulating wheels 7 are sleeved on the electrode holders 5 located on both sides of the support 53, and the insulating wheels 7 are axially positioned through snap springs 6; a plurality of tungsten needles 8 are arranged on the support 53; the device also comprises a metal sheet 4 positioned inside the metal tube 1, the vent cable 2 moves axially under the driving of a motor 14, an insulating wheel 7 moves axially along the surface of the metal sheet 4 under the dragging of the vent cable 2, and the needle head of the tungsten needle 8 contacts with the edge of the metal sheet 4 and moves when working.

The existence of both sides insulation pulley 7 has guaranteed the concentration of shielding gas around the tungsten needle 8 among the welding process on the one hand, and on the other hand then plays the supporting role when tungsten needle 8 moves in the pipe for the laminating relation at tungsten needle 8 and sheetmetal 4 edge is reliable and stable.

As shown in fig. 4, two ends of the ventilation cable 2 extending out of the metal tube 1 respectively bypass the plurality of steering wheels 9, two ends of the ventilation cable 2 are respectively connected to two interfaces of the three-way joint 11, and the other interface of the three-way joint 11 is connected to the power supply 12 and the air supply 13.

As shown in fig. 5, a plurality of steering wheels 9 are all mounted on the support plate 15, wherein one of the steering wheels 9 is a driving wheel; the motor 14 is arranged at the bottom of the supporting plate 15, and the output end of the motor 14 penetrates through the supporting plate 15 and is fixedly arranged with the driving wheel; still install the take-up pulley 10 on the backup pad 15 that is located the drive wheel next door, the cable 2 of ventilating walks around the take-up pulley 10 and twines many rings on the drive wheel for when motor 14 drives the drive wheel pivoted, the both ends one end screw in one end of cable 2 on the drive wheel of ventilating is unscrewed, and then has guaranteed the axial displacement of cable 2 for tubular metal resonator 1 of ventilating, thereby plays the effect that cable 2 of ventilating drags.

As shown in fig. 6, 7 and 8, the electrode holder 5 has the following structure: the ventilation cable comprises a round pipe part 51, wherein two ends of the round pipe part 51 are respectively connected with a ventilation cable 2 through a cable joint 3; a support 53 extends outwards from the middle of the round pipe part 51 along the circumferential direction, grooves 52 are respectively formed in the round pipe part 51 at two sides of the support 53, the grooves 52 are used for installing clamp springs 6, and the clamp springs 6 axially limit the insulating wheel 7 sleeved on the electrode base 5; two ends of the support 53 are respectively provided with a tungsten needle hole 55, two side surfaces of the support 53 adjacent to the single tungsten needle hole 55 are respectively provided with a threaded hole 54, and the threaded holes 54 are communicated with the tungsten needle holes 55; the end of the support 53 beside the single tungsten needle hole 55 is also provided with a plurality of gas outlets 56.

A tungsten needle 8 is arranged in the tungsten needle hole 55, a fastener is arranged in the threaded hole 54, and the single tungsten needle 8 is fixedly arranged in the tungsten needle hole 55 through two fasteners arranged on two adjacent side surfaces; tungsten needles 8 are respectively installed at two ends of a support 53 of the electrode holder 5, the two tungsten needles 8 work simultaneously, and the two sides of the metal sheet 4 are respectively welded, so that the welding efficiency is improved.

As shown in fig. 9, the insulating wheel 7 has a structure of: the metal pipe comprises a wheel body 70, wherein the wheel body 70 circumferentially comprises an arc-shaped part 71 matched with the inner wall of the metal pipe 1, two ends of the arc-shaped part 71 jointly extend to form a straight part 72 through an arc-shaped transition part 73, and the straight part 72 is in surface contact with a metal sheet 4; the wheel body 70 is also provided with a through hole 74, and the insulating wheel 7 is sleeved on the electrode holder 5 through the through hole 74.

The arc portion 71 of insulating wheel 7 matches with the tubular metal resonator 1 inner wall, and straight portion 72 then with sheetmetal 4 surface contact for insulating wheel 7 is moving the in-process, its circumference all the time with tubular metal resonator 1 inner wall and sheetmetal 4 surface laminating, and circumference contact has closely ensured the shielding gas concentration on the one hand, and on the other hand makes the axial lead of aeration cable 2 and electrode holder 5 unchangeable for the position of tubular metal resonator 1, and then the laminating of 8 syringe needles of tungsten needle is more reliable.

The insulation wheel 7 is an insulation ceramic wheel.

The metal sheet 4 is of a spiral structure, and the insulating wheel 7 rotates relative to the electrode holder 5 under the guidance of the spiral surface of the metal sheet 4 while the insulating wheel 7 moves along the axial direction under the dragging of the ventilation cable 2.

The edges of two sides of the metal sheet 4 are contacted with the inner wall of the metal tube 1, and a groove for the movement of the tungsten needle 8 is formed between the edge of the metal sheet 4 and the inner wall of the metal tube 1.

In this embodiment, the three-way joint 11 and the ventilation cable 2 are both commercially available products, and the three-way joint 11 has the following model: QQ-300, gas-electric split electrode; the ventilation cable 2 is an integrated gas-electricity welding wire, the axial center part of the ventilation cable is an electrified cable core, and the outer layer of the cable core is provided with a ventilation layer; the ventilation cable 2 is ventilated while being electrified, so that electricity and protective gas are simultaneously conveyed to a working area between the two insulation wheels 7, and the tungsten needle 8 is subjected to self-fluxing welding under the condition of common input of electricity and gas.

The utility model discloses a theory of operation does:

the ventilation cable 2 is tightened through the tension wheel 10, the motor 14 rotates, the driving wheel rotates, one end of the two ends, wound on the driving wheel, of the ventilation cable 2 is screwed in and screwed out, the ventilation cable 2 moves axially relative to the metal pipe 1, the electrode holder 5 and the insulating wheel 7 move axially together with the ventilation cable 2, and therefore the tungsten needle 8 on the electrode holder 5 moves; the straight part 72 of the insulation wheel 7 is attached to the metal sheet 4, and the arc part 71 is attached to the inner wall of the metal pipe 1, so that the insulation wheel 7 rotates along with the axial movement with the surface of the metal sheet 4 as a guide; the tungsten needle 8 is supported by the insulating wheel 7, the needle head of the tungsten needle 8 is always opposite to and attached to a groove formed between the metal sheet 4 and the inner wall of the metal tube 1, and the tungsten needle 8 rotates along the groove in the axial moving process; the protective gas comes out from the gas outlet 56 beside the tungsten needle 8 and is filled in the space between the two insulating wheels 7, the tungsten needle 8 is electrified under the protective gas environment to realize the self-fluxing welding of the metal sheet 4 and the metal tube 1, namely the joint of the metal sheet 4 and the inner wall of the metal tube 1 is welded, and the protective gas can be argon.

The utility model is simple in operation, realized intraductal sheetmetal welded automation, promoted intraductal welded efficiency and quality greatly, the practicality is strong.

The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.

Claims

1. The utility model provides a sheetmetal welding set in tubular metal resonator which characterized in that: the metal tube comprises a metal tube (1), wherein a ventilation cable (2) penetrates through the metal tube (1), an electrode holder (5) is arranged on the ventilation cable (2) positioned in the metal tube (1) through a cable joint (3), a support (53) is arranged in the middle of the electrode holder (5), insulating wheels (7) are sleeved on the electrode holders (5) positioned on two sides of the support (53), and the insulating wheels (7) are axially positioned through clamp springs (6); a plurality of tungsten needles (8) are arranged on the support (53); the device is characterized by further comprising a metal sheet (4) positioned inside the metal tube (1), wherein the ventilation cable (2) moves axially under the driving of a motor (14), and the needle head of the tungsten needle (8) is in contact with the edge of the metal sheet (4) and moves when working.

2. A device for welding metal sheets inside a metal tube according to claim 1, wherein: the two ends of the ventilation cable (2) extending out of the metal pipe (1) respectively bypass the plurality of steering wheels (9), the two ends of the ventilation cable (2) are respectively connected to two interfaces of the three-way joint (11), and the other interface of the three-way joint (11) is connected to the power supply (12) and the air source (13).

3. A device for welding metal sheets inside a metal tube according to claim 2, wherein: a plurality of steering wheels (9) are all arranged on the supporting plate (15), wherein one steering wheel (9) is a driving wheel; the motor (14) is arranged at the bottom of the supporting plate (15), and the output end of the motor (14) penetrates through the supporting plate (15) and is fixedly arranged with the driving wheel; and a tension wheel (10) is also arranged on the support plate (15) beside the driving wheel, and the ventilation cable (2) is wound around the tension wheel (10) for a plurality of turns.

4. A device for welding metal sheets inside a metal tube according to claim 1, wherein: the electrode seat (5) is structurally characterized in that: the ventilation cable comprises a round pipe part (51), wherein two ends of the round pipe part (51) are respectively connected with a ventilation cable (2) through a cable joint (3); a support (53) extends outwards from the middle of the round pipe part (51) along the circumferential direction, and grooves (52) are respectively formed in the round pipe parts (51) positioned at two sides of the support (53); two ends of the support (53) are respectively provided with a tungsten needle hole (55), two side surfaces of the support (53) adjacent to the single tungsten needle hole (55) are respectively provided with a threaded hole (54), and the threaded holes (54) are communicated with the tungsten needle holes (55); the end of the support (53) beside the single tungsten needle hole (55) is also provided with a plurality of gas outlets (56).

5. An apparatus for welding metal sheets in a metal pipe according to claim 4, wherein: the tungsten needle (8) is installed in the tungsten needle hole (55), the fastener is installed in the threaded hole (54), and the single tungsten needle (8) is fixedly installed in the tungsten needle hole (55) through the two fasteners.

6. A device for welding metal sheets inside a metal tube according to claim 1, wherein: the structure of the insulating wheel (7) is as follows: the metal pipe fitting comprises a wheel body (70), wherein the wheel body (70) circumferentially comprises an arc-shaped part (71) matched with the inner wall of a metal pipe (1), two ends of the arc-shaped part (71) jointly extend to form a straight part (72) through an arc-shaped transition part (73), and the straight part (72) is in surface contact with a metal sheet (4); the wheel body (70) is also provided with a through hole (74), and the insulating wheel (7) is sleeved on the electrode seat (5) through the through hole (74).

7. A device for welding metal sheets inside a metal tube according to claim 1, wherein: the insulating wheel (7) is an insulating ceramic wheel.

8. A device for welding metal sheets inside a metal tube according to claim 1, wherein: the metal sheet (4) is of a spiral structure, the insulating wheel (7) moves along the axial direction under the dragging of the ventilation cable (2), and meanwhile, the insulating wheel (7) rotates relative to the electrode base (5) under the guiding of the spiral surface of the metal sheet (4).

9. A device for welding metal sheets inside a metal tube according to claim 1, wherein: the edge of two sides of the metal sheet (4) is in contact with the inner wall of the metal tube (1), and a groove for moving the tungsten needle (8) is formed between the edge of the metal sheet (4) and the inner wall of the metal tube (1).