CN111774703A

CN111774703A - Contact tube assembly and submerged arc surfacing welding machine head with electrode

Info

Publication number: CN111774703A
Application number: CN202010766389.6A
Authority: CN
Inventors: 张敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2020-10-16

Abstract

The invention provides a conductive nozzle assembly and a strip submerged arc surfacing machine head, relates to the field of strip surfacing equipment, and solves the problem of unstable welding quality in the prior art, wherein the conductive nozzle assembly arranged on the strip submerged arc surfacing machine head comprises an integral electrode, a single-petal electrode, an electrode connecting plate, an electrode pressing plate and an electrode pressing mechanism; the electrode connecting plate is connected with the integral electrode and the electrode pressing plate, the electrode pressing plate is connected with the single-petal electrode through a conductive cable, and the integral electrode and the single-petal electrode are oppositely arranged and used for clamping a welding strip; the electrode pressing mechanism comprises a lever mechanism and a first elastic piece, the lever mechanism is fixedly connected with the electrode connecting plate, one end of the lever mechanism is connected with the first elastic piece, the other end of the lever mechanism is connected with the single-petal electrode, and the electrode pressing mechanism is used for pushing the single-petal electrode to the whole electrode to clamp the welding strip. The invention can lead the welding strip to be in good contact with the electrode and improve the welding quality.

Description

Contact tube assembly and submerged arc surfacing welding machine head with electrode

Technical Field

The invention relates to the field of strip surfacing equipment, in particular to a contact tip assembly and a strip submerged arc surfacing machine head.

Background

The problem of uneven thickness of a welding strip used in the conventional strip surfacing generally exists, but the gap of the conventional strip surfacing machine head cannot be adjusted at a conductive nozzle, and the welding strip cannot be pressed and stably contacted at the tail end, so that the conveying and welding quality of the welding strip is not stable.

When the existing strip electrode surfacing equipment is used for welding, a welding strip is sent into a wide and fixed matching area between a welding strip driving wheel and a pressing wheel, the welding strip driving wheel transmits power from a direct current motor and a speed reducer, the pressing wheel assembly is adjusted through a pressing hand wheel, the pressing force of the pressing wheel on the welding strip is adjusted, the welding strip vertically moves downwards by means of friction force between the driving wheel and the pressing wheel, the pressure applied to the welding strip by the driving wheel and the pressing wheel is moderate to ensure normal strip feeding, indentation caused on the surface of the welding strip due to too tight condition affects welding quality, and the welding strip is conveyed and slipped due to too loose condition to cause the problem of welding strip supply interruption. The electrode has serious heating in the welding process, is easy to deform and can not stably compress a welding strip. The arc burning point is generally in an irregular moving state, and the heating state of the two ends of the welding strip is unbalanced under the condition, so that the welding line is not formed well and slag is clamped at the edge.

Disclosure of Invention

The invention aims to design a contact tip assembly and a submerged arc surfacing head with an electrode, which can ensure that a welding strip is in good contact with the electrode and improve the welding quality.

The invention is realized by the following technical scheme:

the invention provides a contact tube assembly, which comprises an integral electrode, a single-petal electrode, an electrode connecting plate, an electrode pressing plate and an electrode pressing mechanism, wherein the electrode pressing plate is arranged on the integral electrode;

the electrode connecting plate is connected with the integral electrode and the electrode pressing plate, the electrode pressing plate is connected with the single-petal electrode through a conductive cable, and the integral electrode and the single-petal electrode are oppositely arranged and used for clamping a welding strip;

the electrode pressing mechanism comprises a lever mechanism and a first elastic piece, the lever mechanism is fixedly connected with the electrode connecting plate, one end of the lever mechanism is connected with the first elastic piece, the other end of the lever mechanism is connected with the single-petal electrode, and the electrode pressing mechanism is used for pushing the single-petal electrode to the integral electrode to clamp the welding strip.

When the structure is adopted, the single-petal electrode can adjust the gap between the single-petal electrode and the whole electrode according to the thickness change of the welding strip through the electrode pressing mechanism, the fitting degree of the welding strip and the whole electrode and the single-petal electrode is improved, and the welding quality is ensured.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the lever mechanism comprises an electrode pressing plate, an electrode supporting plate, an electrode pressing seat, an electrode shaft and an electrode adjusting screw, and the first elastic part is a plate spring;

the electrode pressing seat is fixedly connected with the electrode connecting plate, the electrode shaft is fixedly connected with the electrode pressing seat, the electrode pressing plate is rotatably sleeved on the electrode shaft, the bottom end of the electrode pressing plate is fixedly connected with the top end of the electrode supporting plate, the bottom end of the electrode supporting plate is hinged with the single-petal electrode, the plate spring is fixedly connected with the electrode pressing seat, and the electrode adjusting screw is in threaded connection with the electrode pressing plate and is abutted against the plate spring.

When the structure is arranged, the plate spring is connected to the electrode pressing seat and indirectly connected with the single-petal electrode, so that lower temperature can be kept, and the structure and the performance are stable, so that the welding quality is guaranteed.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the electrode pressing mechanism is characterized in that the number of the single-petal electrodes is at least two, the single-petal electrodes are sequentially arranged along the axial direction of the electrode shaft, and one single-petal electrode is correspondingly connected with one electrode pressing mechanism.

When the structure is adopted, different single-lobe electrodes respectively contact different parts in the width direction of the welding strip, gaps between the different single-lobe electrodes and the whole electrode can be respectively adjusted, and the contact fitting degree of the welding strip and the electrode is improved.

In order to further better implement the invention, the following arrangement structure is particularly adopted: electrode blocks are arranged on the inner sides of the integral electrode and the single-petal electrode, and the electrode blocks are structural members made of chromium, zirconium and copper materials.

When the structure is adopted, the electrode block is used for replacing the integral electrode and the single-petal electrode to be in direct contact with the welding strip, so that abrasion is avoided.

In order to further better implement the invention, the following arrangement structure is particularly adopted: and the surface of the electrode block, which is used for contacting the welding strip, is provided with a vertical through guide groove for guiding the downward flow of the welding flux.

When the structure is adopted, the welding flux is prevented from being accumulated at the position of the conductive nozzle to influence the conveying of the welding strip.

In order to further better implement the invention, the following arrangement structure is particularly adopted: and a cooling water channel is arranged in the integral electrode.

When the structure is adopted, cooling water can be introduced into the whole electrode, the working temperature of the electrode is maintained, and the welding quality is ensured.

The invention also provides a strip submerged arc surfacing machine head which comprises a strip guide wheel assembly, a strip box assembly, a machine base assembly, a hanging base assembly, a motor driving assembly, a speed reducing motor, a pinch roller assembly and the conductive nozzle assembly;

the hanging seat assembly is fixedly connected with the base assembly and the speed reducing motor, the base assembly is provided with the belt guide wheel assembly, the tape box assembly, the pressing wheel assembly and the motor driving assembly, the speed reducing motor is connected with the motor driving assembly, the motor driving assembly and the pressing wheel assembly are oppositely arranged and used for conveying welding tapes, and the conductive nozzle assembly is arranged on the tape box assembly.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the pinch roller assembly comprises a fixing arm, a swing arm, a pinch roller and a second elastic piece; the pinch roller is arranged on the swing arm through a wheel shaft; the first end of the swing arm is hinged with the first end of the fixed arm through a connecting shaft, the second end of the fixed arm is connected with the second elastic piece, the free end of the second elastic piece is connected with the second end of the swing arm, the connecting shaft is installed on the base assembly, and the fixed arm is fixedly connected with the base assembly; when the pressing wheel moves towards the second end of the fixed arm around a hinged point of the swing arm and the fixed arm, the second end of the swing arm can extrude the free end of the second elastic piece so as to improve the pressure of the second elastic piece on the second end of the swing arm.

When adopting above-mentioned structure that sets up, when welding the extrusion force between area and the pinch roller and changing in welding process, the pinch roller is to the effect self-adaptation fine setting of the extrusion force accessible second elastic component of welding the area, lets the pinch roller with weld the area and remain throughout in suitable pressure range, and the pinch roller also can be in close contact with all the time and weld the area under the effect of second elastic component simultaneously, avoids the too big crushing of pressure to weld the area and welds the problem that the area skidded and appear. Due to the existence of the second elastic piece, the adjusting requirement of the pinch roller can be reduced, and the installation and debugging efficiency is improved.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the second elastic part comprises a locking hand wheel, and the locking hand wheel comprises a jacking screw rod, a spring and a jacking shaft which are coaxially arranged; the spring with the puller shaft all set up in the spring hole of puller screw, the relative both ends of spring connect the puller shaft respectively with the puller screw, the puller screw with the second end spiro union of fixed arm, the puller shaft stretches out the end butt that stretches out in the spring hole of puller screw the second end of swing arm.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the jacking screw rod is sleeved with a handle.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the first end of the swing arm is a double-lug connecting seat, and the first end of the fixing arm is inserted into the inner side of the double-lug connecting seat of the swing arm and is hinged with the inner side of the double-lug connecting seat.

When the arrangement structure is adopted, the first end of the fixed arm is positioned on the inner side of the double-lug connecting seat at the first end of the swing arm, so that the arrangement space can be saved.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the pinch roller sets up in the swing arm the ears connecting seat inboard.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the wheel shaft sleeve is provided with a positioning sleeve and a correction positioning sleeve, and the positioning sleeve and the correction positioning sleeve are respectively positioned on two sides of the pinch roller to axially position the pinch roller.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the pressing wheel is a deep groove ball bearing, the wheel shaft is a bearing fixing shaft, and the pressing wheel is installed on the swing arm through the bearing fixing shaft.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the pinch roller assemblies are arranged in at least two groups, all the pinch roller assemblies are sequentially installed along the axial direction of the connecting shaft, and the installation positions of the pinch roller assemblies can be adjusted along the axial direction of the connecting shaft.

When the structure is arranged, the purpose of adjusting the width of the contact welding strip can be achieved by adjusting the mounting position of the pressing wheel assembly along the axial direction of the connecting shaft, so that the pressing requirements of the welding strips with different widths are met, and the pressing wheel assembly is suitable for conveying the welding strips with different widths.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the magnetic control assembly comprises an iron core, a framework and a coil, the iron core is a solid rod-shaped structural member, the iron core comprises a first straight line section and a second straight line section which are sequentially connected, an included angle is formed between the first straight line section and the second straight line section, the iron core is connected with the tape box assembly, the coil is sleeved on the framework, and the framework is sleeved on the first straight line section of the iron core; the bottom ends of the iron cores of the two groups of magnetic control assemblies respectively point to the two opposite sides of the strip outlet end of the contact tube assembly.

When the structure is adopted, the magnetic control assembly can extend to the side of the strip outlet end of the strip submerged arc surfacing equipment through the bent iron core, and through the arrangement of the two groups of magnetic control assemblies, an alternating magnetic field is formed beside a welding strip by utilizing the magnetic conduction effect of the iron core, so that the arc combustion point in an irregular moving state is in a regular moving state, the heating state at the two ends of the welding strip is improved, the formation of a welding line is finally improved, and the effect of edge slag inclusion is avoided.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the magnetic control assembly further comprises a cylinder body and a cylinder cover;

the barrel is fixedly arranged on the iron core, the barrel cover is arranged on the top end of the barrel in a sealing mode, and the solenoid is inserted into the barrel.

When the structure is adopted, the solenoid is accommodated in the cylinder body and isolated from the outside, so that the solenoid can be prevented from electric leakage and can be better protected.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the socket is installed to the cover, the socket is connected the solenoid.

When the structure is adopted, the power supply can be directly plugged outside the barrel body through the socket.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the magnetic control assembly further comprises a first insulating plate, a second insulating plate, a third insulating plate, a fourth insulating plate and a nut, wherein the first insulating plate, the second insulating plate, the third insulating plate, the fourth insulating plate and the nut are sleeved on the iron core;

the bottom end face of the first insulating plate is connected with the top end face of the coil, the bottom end face of the second insulating plate is connected with the top end face of the framework and connected with the top end face of the first insulating plate, and the side face of the first insulating plate is abutted to the inner wall of the cylinder; the top end face of the third insulating plate is connected with the bottom end face of the coil, and the top end face of the fourth insulating plate is connected with the bottom end face of the framework and connected with the bottom end face of the third insulating plate; the fourth insulating plate is fixedly connected with the iron core;

the cylinder is fixedly connected to the third insulating plate;

the nut is in threaded connection with the top of the iron core, and the nut is in crimping connection with the top of the second insulating plate.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the iron core is provided with the annular, annular department clamps has the circlip for the axle, the bottom face seat of fourth insulation board in circlip for the axle.

When the structure is adopted, the magnetic control assembly can be conveniently disassembled and assembled.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the barrel inner wall with the solenoid outer wall forms the annular space, the bi-pass is installed to the barrel, the bi-pass intercommunication the annular space with the barrel outside, the air outlet has been seted up to the cover.

When the structure is arranged, the magnetic control assembly is provided with the air passage which is used for preventing overheating and is used for passing through compressed air, and long-time surfacing can be met.

In order to further better implement the invention, the following arrangement structure is particularly adopted: and a silencer is arranged at an air outlet of the cylinder cover.

When the structure is adopted, the air flow rushing out from the air outlet at a high speed can be prevented from generating squeaking, and the production environment is improved.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the magnetic control assembly further comprises a magnetic control mounting seat, the magnetic control mounting seat is sleeved on the iron core, and a connecting arm is arranged at the free end of the magnetic control mounting seat; the magnetic control mounting seat is provided with a clamping hoop, and the axis of the clamping hoop is perpendicular to the axis of the iron core.

When the structure is adopted, the magnetic control mounting seat can be quickly mounted with strip submerged arc surfacing equipment, and the mounting angle of the magnetic control assembly can be conveniently adjusted to adjust the direction of the iron core.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the magnetic control assembly further comprises an insulating sleeve, the insulating sleeve is sleeved on the iron core, and the magnetic control mounting seat is sleeved on the insulating sleeve.

When the structure is adopted, the iron core and the magnetic control mounting seat are isolated by the insulating sleeve in an insulating way so that the iron core and the strip submerged arc surfacing equipment are isolated in an insulating way.

In order to further better implement the invention, the following arrangement structure is particularly adopted: the bottom end of the second straight line section is of a circular truncated cone structure.

The invention has the following advantages and beneficial effects:

(1) according to the welding strip welding device, the single-petal electrode can adjust the gap between the single-petal electrode and the integral electrode through the electrode pressing mechanism according to the thickness change of the welding strip, so that the fitting degree of the welding strip, the integral electrode and the single-petal electrode is improved, and the welding quality is ensured;

(2) according to the invention, when the extrusion force between the welding strip and the pressing wheel is changed in the welding process, the extrusion force of the pressing wheel on the welding strip can be adjusted in a self-adaptive manner under the action of the second elastic piece, so that the pressing wheel and the welding strip are always kept in a proper pressure range, and meanwhile, the pressing wheel can also be always in close contact with the welding strip under the action of the second elastic piece, so that the problems that the welding strip is crushed due to overlarge pressure and the welding strip slips are avoided. Due to the existence of the second elastic piece, the adjusting requirement of the pinch roller can be reduced, and the mounting and debugging efficiency is improved;

(3) according to the invention, the magnetic control assemblies can extend to the side of the strip outlet end of the strip electrode submerged arc surfacing equipment through the bent iron core, and by arranging the two groups of magnetic control assemblies, an alternating magnetic field is formed beside the welding strip by utilizing the magnetic conduction effect of the iron core, so that the arc burning point in an irregular swimming state is in a regular motion state, the heating states of the two ends of the welding strip are improved, the formation of a welding line is finally improved, and the edge slag inclusion is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a contact tip assembly;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic side view of a submerged arc welding head with electrodes;

FIG. 4 is a schematic view of the other side appearance structure of the submerged arc welding head with the electrode;

FIG. 5 is a schematic diagram showing the arrangement positions of components of the submerged arc welding head with electrodes;

FIG. 6 is a schematic structural view of a pinch wheel assembly;

FIG. 7 is a front schematic view of a hold-down wheel assembly;

FIG. 8 is a side schematic view of a hold-down wheel assembly;

fig. 9 is a structural schematic diagram of a locking hand wheel;

FIG. 10 is a schematic structural diagram of the appearance of a magnetron assembly;

FIG. 11 is a schematic half-section view of a magnetron assembly;

labeled as:

1. a stand assembly; 11. a vertical plate; 12. an outer connecting plate; 13. an inner connection plate; 14. a lower connecting plate;

2. a hanging seat assembly;

3. a belt guide wheel assembly;

4. a motor drive assembly;

5. a pinch roller assembly; 51. locking a hand wheel; 511. tightly pushing the screw; 512. a spring; 513. jacking the shaft; 514. a handle; 52. a fixed arm; 53. swinging arms; 54. a bearing fixing shaft; 55. a bearing positioning sleeve; 56. a pinch roller; 57. a cap nut; 58. correcting a bearing positioning sleeve; 59. a connecting shaft;

6. a tape cartridge assembly; 61. a front plate; 62. welding a tape insulation box; 63. a back plate;

7. a contact tip assembly; 71. a monolithic electrode; 72. a single-lobed electrode; 73. an electrode connecting plate; 74. an electrode pressing plate; 75. a conductive cable; 76. an electrode compression plate; 77. an electrode support plate; 78. an electrode pressing seat; 79. an electrode shaft; 710. an electrode adjustment screw; 711. a plate spring; 712. an electrode block; 7121. a guide groove;

8. a magnetic control assembly; 81. a muffler; 82. a socket; 83. a cross recessed countersunk flat head screw; 84. a nut; 85. a first insulating plate; 86. a second insulating plate; 87. an iron core; 88. a framework; 89. a coil; 810. a second pass; 811. a barrel; 812. a third insulating plate; 813. a fourth insulating plate; 814. a circlip for the shaft; 815. a magnetic control mounting seat; 816. an insulating sleeve; 817. a cylinder cover;

9. a solder box.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Example 1:

a contact tip assembly for improving the welding quality by making good contact between a welding strip and an electrode, as shown in FIGS. 1 to 11, is particularly configured as follows:

the contact tip assembly comprises an integral electrode 71, a single-petal electrode 72, an electrode connecting plate 73, an electrode pressing plate 74 and an electrode pressing mechanism. The electrode connecting plate 73 is mainly composed of a rectangular frame body formed by splicing four plates and two extension plates, and the extension plates are used for connecting cables.

The width of the integral electrode 71 is larger than that of the welding strip, and the top end of the integral electrode is inserted into the inner side of the electrode connecting plate 73 and is attached and fixedly connected with the inner wall of the electrode connecting plate 73. The electrode pressing plate 74 is arranged on the opposite side of the integral electrode 71, the electrode pressing plate 74 is fixedly connected with the outer side wall of the electrode connecting plate 73, a conductive cable 75 is clamped between the electrode pressing plate 74 and the electrode connecting plate 73, the conductive cable 75 has certain flexibility, the bottom end of the conductive cable 75 is connected with the single-petal electrode 72, the integral electrode 71 and the single-petal electrode 72 are arranged oppositely to form a gap, and a welding strip can penetrate through the gap and is clamped by the integral electrode 71 and the single-petal electrode 72.

The electrode pressing mechanism is used for applying variable pressure to the single-petal electrode 72 so that the gap between the integral electrode 71 and the single-petal electrode 72 can be adjusted adaptively according to the thickness change of the welding strip to a certain extent. The electrode pressing mechanism comprises a lever mechanism and a first elastic piece. Specifically, the lever mechanism includes an electrode pressing plate 76, an electrode supporting plate 77, an electrode pressing base 78, an electrode shaft 79 and an electrode adjusting screw 710, and the first elastic member is a plate spring 711. The electrode pressing base 78 is a substantially H-shaped bracket, one side of which is recessed to avoid the conductive cable 75, the other side of which is recessed to accommodate the electrode pressing plate 76, the electrode pressing base 78 needs to be fixedly connected with the electrode connecting plate 73 directly or indirectly, the electrode shaft 79 is transversely arranged and fixedly inserted into the one side recess of the electrode pressing base 78, the electrode pressing plate 76 is sleeved at the electrode shaft 79, the electrode pressing plate 76 can swing around the electrode shaft 79 in a rotating manner, the bottom end of the electrode pressing plate 76 is fixedly connected with the top end of the electrode supporting plate 77, the bottom end of the electrode supporting plate 77 is hinged with the single-petal electrode 72 through a screw shaft arranged parallel to the electrode shaft 79, the plate spring 711 is fixedly connected to the electrode pressing base 78, the electrode adjusting screw 710 is screwed to the top end of the electrode pressing plate 76, the head end of the electrode adjusting screw 710 is abutted against the plate spring 711, and the screwing length of the electrode adjusting screw, the single-petal electrode 72 is pushed to the integral electrode 71 to clamp the welding strip by changing the swing of the electrode pressing plate 76, the gap between the single-petal electrode 72 and the integral electrode 71 is adjusted by the electrode pressing mechanism according to the thickness change of the welding strip, the degree of fit between the welding strip and the integral electrode 71 and the single-petal electrode 72 can be improved, and the welding quality is ensured, meanwhile, the plate spring 711 is connected to the electrode pressing seat 78 and is indirectly connected with the single-petal electrode 72 and is not directly arranged at the integral electrode or the single-petal electrode, so that the lower temperature can be kept, the structure and the performance are stable, and the welding quality is ensured.

Preferably, in order to better fit and press the solder strip, the single-petal electrodes 72 are arranged in at least two, for example three, three single-petal electrodes 72 are sequentially arranged along the axial direction of the electrode shaft 79, a space ring is arranged between adjacent single-petal electrodes 72 for separation, one single-petal electrode 72 is correspondingly connected with the electrode supporting plate 77 of one electrode pressing mechanism, and the electrode adjusting screw 710 of one electrode pressing mechanism is correspondingly connected with one plate spring 711. Different single-lobe electrodes 72 respectively contact different positions in the width direction of the welding strip, gaps between the different single-lobe electrodes 72 and the integral electrode 71 can be respectively adjusted, the contact fitting degree of the welding strip and the electrode is improved, and the number of the single-lobe electrodes 72 which are put into use can be selected according to different welding strip widths.

As a preferable structure scheme of the integral electrode 71 and the single-petal electrode 72, an electrode block 712 is detachably mounted on each of the inner side of the integral electrode 71 and the inner side of the single-petal electrode 72, the electrode block 712 is a structural member made of chromium zirconium copper, and has better wear resistance and crack resistance and higher softening temperature than the integral electrode 71 and the single-petal electrode 72 made of red copper, and the electrode block 712 is used for replacing the integral electrode 71 and the single-petal electrode 72 to be in direct contact with welding strips so as to avoid abrasion of the integral electrode 71 and the single-petal electrode 72. In order to prevent flux from accumulating between the integral electrode 71 and the single-lobe electrode 72, four vertically through guide grooves 7121 are arranged on the surface of the electrode block 712 for contacting with the solder strip, and the guide grooves 7121 are used for guiding the flux to flow downwards to avoid the flux accumulating at the conductive nozzle to influence the solder strip conveying.

In order to improve the heat dissipation effect of the integral electrode, as a preferred structure scheme of the integral electrode 71, a cooling water channel is processed inside the integral electrode 71, and pipe joints are installed at the inlet and the outlet of the cooling water channel, so that cooling water can be introduced into the integral electrode 71, the working temperature of the electrode is maintained, and the welding quality is ensured.

Example 2:

the embodiment further provides a submerged arc surfacing welding head with a strip electrode on the basis of the embodiment, and the following arrangement structure is particularly adopted:

the device comprises a guide belt wheel assembly 3, a belt box assembly 6, a machine base assembly 1, a hanging base assembly 2, a motor driving assembly 4, a right-angle middle speed reducing motor, a pinch roller assembly 5, a welding flux box 9 and a conductive nozzle assembly in embodiment 1.

The hanging seat assembly 2 is fixedly connected with the seat assembly 1 and the right-angle neutral gear motor.

The machine base component 1 comprises two vertical plates 11 which are oppositely arranged, an outer connecting plate 12 which connects the two vertical plates 11, two inner connecting plates 13 which are distributed up and down and a lower connecting plate 14,

the pulley guide assembly 3 is installed on the vertical plate 11 and the two inner connecting plates 13 of the base assembly 1.

The tape cassette assembly 6 comprises a front plate 61 and a rear plate 63 which are made of aluminum and fixed with each other, and a solder tape insulating box 62 sandwiched between the front plate and the rear plate, wherein the tops of the front plate 61 and the rear plate 63 are fixedly connected with the lower connecting plate 14 positioned at the bottom of the base assembly 1. The integral electrode 71 of the contact tube assembly is attached and fixedly connected with the front plate 61, one side of the electrode connecting plate 73 is attached and fixedly connected with the rear plate 63, and the electrode pressing seat 78 is fixedly connected with the rear plate 63 to realize fixation.

The motor driving component 4 comprises a driving wheel arranged between the two vertical plates 11, and a right-angle intermediate speed reducing motor is in transmission connection with the driving wheel.

A first solder cartridge 9 is mounted at the integral electrode 71, and a second solder cartridge 9 is mounted at the electrode support plate 77.

The pinch roller assembly 5 includes a fixed arm 52, a swing arm 53, a pinch roller 56, and a second resilient member. The pressing wheel 56 is mounted on the swing arm 53 through the bearing fixing shaft 54, the pressing wheel 56 is a deep groove ball bearing, the pressing wheel 56 is sleeved on one bearing fixing shaft 54, the bearing fixing shaft 54 is used as a wheel shaft of the pressing wheel 56 and penetrates through the position between the first end and the second end of the swing arm 53, and the end of the bearing fixing shaft 54 is mounted with a cap-shaped nut 57 for fixing. The first end of swing arm 53 has a shaft hole, and the first end of fixed arm 52 has a shaft hole, and the shaft hole of the first end of swing arm 53 and the shaft hole of the first end of fixed arm 52 coaxial setting realize articulating through connecting axle 59. The second end of the fixed arm 52 is connected with a second elastic member, the free end of the second elastic member is connected with the second end of the swing arm 53, and the second elastic member of the cover can deform and contract when being extruded, and can be an air cylinder or a hydraulic cylinder structure with an overflow valve or a spring pressure head structure. The preferred second elastic component of this embodiment includes locking hand wheel 51, locking hand wheel 51 includes the tight screw rod 511 in top of coaxial setting, spring 512 and top mandril 513, the tight screw rod 511 in top has axial blind hole as the spring mounting hole, spring 512 and top mandril 513 are all installed in the spring hole of the tight screw rod 511 in top, the tight screw rod 513 in top and the tight screw rod 511 in top are propped respectively to the relative both ends of spring 512, the tight screw rod 511 in top and the second end spiro union of fixed arm 52, the head end of top mandril 513 stretches out the second end of spring mounting hole butt at swing arm 53, the tail end cover of the tight screw rod 511 in top is equipped with the handle 514 of plastics. The pinch roller assembly 5 is integrally arranged between the outer connecting plate 12 and the inner connecting plate 13, the rear side face of the fixing arm 52 is abutted to the inner side face of the outer connecting plate 12, two ends of the connecting shaft 59 are inserted in the two vertical plates 11, the driving wheel and the pinch roller 56 are oppositely arranged and used for conveying a welding strip, and a gap capable of penetrating the welding strip is formed between the pinch roller 56 and the driving wheel. When the locking hand wheel 51 is rotated, the locking hand wheel can move towards the swing arm 53 along the axial direction, the jacking shaft 513 abuts against the second end of the swing arm 53, and the spring 512 is compressed to adjust the pressure on the welding strip. When the thickness of the welding strip changes or the welding strip deforms or equipment vibrates or impurities enter between the driving wheel and the pressing wheel 56, the pressure between the welding strip and the pressing wheel 56 may change, when the pressure increases, due to the compression of the spring 512, the pressing wheel 56 can move towards the second end of the fixing arm 52 around the hinged point of the swing arm 53 and the fixing arm 52 to give way to the welding strip, the phenomenon that the welding strip cannot be fed due to the fact that an overlarge pressure is formed on the welding strip is avoided, meanwhile, the second end of the swing arm 53 can press the head end of the second elastic piece to improve the pressure of the second elastic piece on the second end of the swing arm 53, the pressing wheel 56 is always pressed on the surface of the welding strip to avoid slipping is avoided, and when the pressure decreases, the spring 512 extends to enable the pressing wheel 56 to quickly move along with the welding strip and to be always pressed on the surface of the welding strip to avoid the situation that the welding strip cannot. When welding the extrusion force between area and the pinch roller 56 and changing, pinch roller 56 is to the effect self-adaptation fine setting of the extrusion force accessible second elastic component in welding process, lets pinch roller 56 and weld the area and remain throughout in suitable pressure range, and pinch roller 56 also can be in close contact with all the time and weld the area under the effect of second elastic component simultaneously, avoids the too big pressure to crush to weld the area and welds the problem appearance that the area skidded. Due to the existence of the second elastic piece, the adjusting requirement of the pressing wheel 56 can be reduced, and the installation and debugging efficiency is improved.

As a preferable structure scheme of the swing arm 53 in this embodiment, a first end of the swing arm 53 is provided as a binaural connection seat, a first end of the fixing arm 52 is inserted into an inner side of the binaural connection seat of the swing arm 53, and a shaft hole of the first end of the swing arm 53 is coaxial with a shaft hole of the first end of the fixing arm 52 and is hinged thereto. The pinch roller 56 is also arranged on the inner side of the double-lug connecting seat of the swing arm 53, the bearing fixing shaft 54 is sleeved with a bearing positioning sleeve 55 and a correction bearing positioning sleeve 58, and the bearing positioning sleeve 55 and the correction bearing positioning sleeve 58 are respectively positioned on two sides of the pinch roller 56 to axially position the pinch roller. The first end of the fixing arm 52 is located inside the binaural connecting seat at the first end of the swing arm 53, which can save the installation space.

Example 3:

the embodiment is further optimized on the basis of the above embodiment, and in order to further better implement the invention, the following arrangement structure is particularly adopted:

two sides of the submerged arc surfacing machine head with the electrode are respectively provided with a group of magnetic control assemblies 8. The magnetic control assembly 8 comprises an iron core 87, a framework 88 and a wire pack 89, wherein the iron core 87 is used as a magnetic conducting rod and is a solid rod-shaped structural member, the iron core 87 is a bent rod and comprises a first straight line section and a second straight line section which are sequentially connected, an included angle is formed between the first straight line section and the second straight line section, and the bottom end of the second straight line section is of a circular truncated cone structure so as to improve the appearance attractiveness. The bobbin 88 is hollow for winding. The coil 89 is formed by winding an enameled wire around the outer wall of the framework 88, the coil 89 is integrally and fixedly sleeved at the framework 88, and the framework 88 is sleeved at the first linear section of the iron core 87.

In order to isolate the coil 89 and the framework 88 from the outside, the magnetic control assembly 8 is further provided with a cylinder 811 and a cylinder cover 817, the outer wall of the cylinder 811 is of a corrugated structure and is mainly used for improving the heat dissipation effect, the cylinder 811 accommodates the coil 89 in the cylinder to isolate the coil 89 from the outside, and the coil 89 can be prevented from electric leakage and can be better protected. An annular groove is formed in the first straight line of the iron core 87, a shaft circlip 814 is clamped in the annular groove, and the shaft circlip 814 is used for supporting the cylinder 811 and the like and providing a convenient dismounting mode. The iron core 87 is sleeved with a first insulating plate 85, a second insulating plate 86, a third insulating plate 812, a fourth insulating plate 813 and a nut 84. The bottom end face of the fourth insulating plate 813 is seated on the top of the shaft circlip 814, the bottom end face of the third insulating plate 812 is seated on the top end face of the fourth insulating plate 813, the inner diameter of the third insulating plate 812 is larger than that of the fourth insulating plate 813, the bottom end of the bobbin 88 is inserted into the inner hole of the third insulating plate 812 and the bottom end face of the bobbin 88 is seated on the top end face of the fourth insulating plate 813, the bottom end face of the bobbin 89 is seated on the top end face of the third insulating plate 812, the bottom end face of the first insulating plate 85 is seated on the top end face of the bobbin 89, the bottom end face of the second insulating plate 86 is seated on the top end face of the first insulating plate 85, the inner diameter of the first insulating plate 85 is larger than that of the second insulating plate 86, the top end of the bobbin 88 is inserted into the inner hole of the first insulating plate 85 and the top end face of the bobbin 88 is seated on the bottom end face of the second insulating plate 86, the nut 84 is screwed to the top of the core 87, and the nut 84 is screwed to the core 87. The cylinder 811 encloses the first insulating plate 85, the second insulating plate 86, the third insulating plate 812, the frame 88, and the coil 89 therein, the side surface of the first insulating plate 85 abuts against the inner wall of the cylinder 811 to provide radial support to the upper portion of the cylinder 811, the side surface of the third insulating plate 812 contacts the inner wall of the cylinder 811, the third insulating plate 812 is fixedly connected to the cylinder 811 by radially disposed screws so that the cylinder 811 is fixedly mounted at the iron core 87, and the cylinder cover 817 is mounted at the top end position of the cylinder 811 in a sealing manner.

The central position of the barrel cover 817 is provided with a socket mounting hole, the socket 82 is mounted in the socket mounting hole, the socket 82 is arranged to enable a power supply to be directly plugged in and pulled out of the barrel 811, the inner side of the socket 82 is electrically connected with the wire package 89 through a copper wire, the outer side of the socket 82 is connected with a cable to serve as a power supply circuit of the wire package 89, the power supply voltage of the wire package 89 is 30V, the power supply current is 5A, and a voltage stabilizing circuit is arranged in the power supply circuit of the wire package 89.

In consideration of the heat generation amount of the coil 89 and the heat dissipation of the magnetron assembly 8, the side surfaces of the first insulating plate 85 and the third insulating plate 812 are abutted and contacted with the inner wall of the cylinder 811, the inner wall of the cylinder 811 and the outer wall of the coil 89 form an annular space, a two-way 810 is installed at the lower part of the cylinder 811, the two-way 810 is communicated with the annular space and the outer side of the cylinder 811, the two-way 810 is connected with a gas pipe through a quick joint, an air outlet is formed in the eccentric position of the cylinder cover 817, and a silencer 81 is installed at the air outlet to avoid the air flow rushing out of the air outlet. Above structure is provided with the overheated air flue that is used for through compressed air that is used for in magnetic control assembly 8, and cooling gas enters into barrel 811 and the annular space of solenoid 89 through the trachea and then discharges, can take away solenoid 89 calorific capacity fast, can satisfy the long-time work of magnetic control assembly 8 and the long-time build-up welding of band electrode submerged arc build-up welding equipment.

The magnetron assembly 8 needs to be installed in a submerged arc bead welding device with poles for use, and the angle of the magnetron assembly 8 may need to be adjusted during installation and production of the magnetron assembly 8, so that a magnetron mounting seat 815 is detachably installed at the first straight line segment of the iron core 87 of the magnetron assembly 8. The magnetron mounting base 815 has an iron core pipe clamp, the iron core pipe clamp is composed of mutually independent movable blocks of a body, and the body and the movable blocks are detachably connected through screws. The magnetron mounting seat 815 is fixedly sleeved at the iron core 87 through an iron core tube clamp, the free end of the magnetron mounting seat 815 extends outwards to form a connecting arm, the connecting arm is provided with an electrode shaft clamp, the axis of the iron core tube clamp is perpendicular to the axis of the electrode shaft clamp, and the axis of the electrode shaft clamp is perpendicular to the axis of the iron core 87. The magnetron mounting seat 815 can be quickly mounted with strip submerged arc surfacing equipment, and the mounting angle of the magnetron assembly 8 can be conveniently adjusted to adjust the orientation of the iron core 87. An insulating sleeve 816 is further arranged on the inner side of the iron core pipe clamp, the insulating sleeve 816 is sleeved on the iron core 87 during installation, the iron core pipe clamp clamps the iron core 87 through the insulating sleeve 816, and the iron core 87 is insulated and isolated from the magnetron mounting base 815 through the insulating sleeve 816 so that the iron core 87 is insulated and isolated from the strip submerged arc surfacing equipment.

The iron cores 87 of each group of magnetic control assemblies 8 are fixedly arranged at the electrode shaft 79 through a magnetic control mounting seat 815 and are connected with the tape cassette assembly 6, and the bottom ends of the iron cores 87 of the two groups of magnetic control assemblies 8 respectively point to the two opposite sides of the tape outlet end of the contact tube assembly. This magnetic control subassembly 8 can extend to the side of taking the end of taking of strip of band electrode submerged arc surfacing equipment through the iron core 87 of buckling, can form alternating magnetic field by welding the area through the magnetic conduction effect of iron core 87, makes the electric arc combustion point that is in the irregular state of swimming be in regular motion state to improve the heated state at welding area both ends, finally reach and improve the welding seam and take shape, avoid the effect of edge inclusion sediment.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.

Claims

1. A contact tip assembly, comprising: the electrode pressing device comprises an integral electrode (71), a single-petal electrode (72), an electrode connecting plate (73), an electrode pressing plate (74) and an electrode pressing mechanism;

the electrode connecting plate (73) is connected with the integral electrode (71) and the electrode pressing plate (74), the electrode pressing plate (74) is connected with the single-petal electrode (72) through a conductive cable (75), and the integral electrode (71) and the single-petal electrode (72) are oppositely arranged for clamping a welding strip;

the electrode pressing mechanism comprises a lever mechanism and a first elastic piece, the lever mechanism is fixedly connected with the electrode connecting plate (73), one end of the lever mechanism is connected with the first elastic piece, the other end of the lever mechanism is connected with the single-petal electrode (72), and the electrode pressing mechanism is used for pushing the single-petal electrode (72) to the integral electrode (71) to clamp the welding strip.

2. The contact tip assembly of claim 1, wherein: the lever mechanism comprises an electrode pressing plate (76), an electrode supporting plate (77), an electrode pressing seat (78), an electrode shaft (79) and an electrode adjusting screw (710), and the first elastic part is a plate spring (711);

the electrode pressing seat (78) is fixedly connected with the electrode connecting plate (73), the electrode shaft (79) is fixedly connected with the electrode pressing seat (78), the electrode pressing plate (76) is rotatably sleeved on the electrode shaft (79), the bottom end of the electrode pressing plate (76) is fixedly connected with the top end of the electrode supporting plate (77), the bottom end of the electrode supporting plate (77) is hinged to the single-petal electrode (72), the plate spring (711) is fixedly connected with the electrode pressing seat (78), and the electrode adjusting screw (710) is in threaded connection with the electrode pressing plate (76) and is abutted to the plate spring (711).

3. The contact tip assembly of claim 2, wherein: the electrode pressing mechanism is characterized in that the number of the single-petal electrodes (72) is at least two, the single-petal electrodes (72) are sequentially arranged along the axial direction of the electrode shaft (79), and one single-petal electrode (72) is correspondingly connected with one electrode pressing mechanism.

4. The contact tip assembly of claim 1, wherein: electrode blocks (712) are installed on the inner sides of the integral electrode (71) and the single-petal electrode (72), and the electrode blocks (712) are structural members made of chromium, zirconium and copper.

5. The contact tip assembly of claim 4, wherein: the surface of the electrode block (712) used for contacting the solder strip is provided with a vertically through guide groove (7121) used for guiding the downward flow of the solder.

6. The contact tip assembly of claim 1, wherein: and a cooling water channel is arranged in the integral electrode (71).

7. The utility model provides a band electrode submerged arc surfacing machine head which characterized in that: comprises a belt guide wheel assembly (3), a tape box assembly (6), a base assembly (1), a hanging base assembly (2), a motor driving assembly (4), a speed reducing motor, a pressing wheel assembly (5) and a conductive nozzle assembly (7) of any one of claims 1 to 6;

hang seat subassembly (2) fixed connection frame subassembly (1) and gear motor, frame subassembly (1) installation conduction band pulley subassembly (3), tape cassette subassembly (6), pinch-off pulley subassembly (5) and motor drive subassembly (4), gear motor connects motor drive subassembly (4), motor drive subassembly (4) with pinch-off pulley subassembly (5) sets up relatively and is used for carrying the solder strip, the conductive nozzle unit mount in tape cassette subassembly (6).

8. The submerged arc surfacing machine head according to claim 7, wherein: the pressing wheel assembly (5) comprises a fixing arm (52), a swing arm (53), a pressing wheel (56) and a second elastic piece;

the pressing wheel (56) is mounted on the swing arm (53) through a wheel shaft;

the first end of the swing arm (53) is hinged with the first end of the fixed arm (52) through a connecting shaft (59), the second end of the fixed arm (52) is connected with the second elastic piece, the free end of the second elastic piece is connected with the second end of the swing arm (53), the connecting shaft (59) is installed on the stand assembly (1), and the fixed arm (52) is fixedly connected with the stand assembly (1);

when the pressing wheel (56) moves around the hinge point of the swing arm (53) and the fixed arm (52) towards the second end of the fixed arm (52), the second end of the swing arm (53) can press the free end of the second elastic member to improve the pressure of the second elastic member on the second end of the swing arm (53).

9. The submerged arc surfacing machine head according to claim 8, wherein: the second elastic part comprises a locking hand wheel (51), and the locking hand wheel (51) comprises a jacking screw rod (511), a spring (512) and a jacking shaft (513) which are coaxially arranged;

the spring (512) with the tight axle (513) in top all set up in the spring hole of tight screw rod (511) in the top, the tight axle (513) in top and the tight screw rod (511) in top are connected respectively to the relative both ends of spring (512), the tight screw rod in top (511) with the second end spiro union of fixed arm (52), stretch out in the tight axle (513) in top the spring hole of tight screw rod (511) stretch out the end butt the second end of swing arm (53).

10. The submerged arc surfacing machine head according to claim 7, wherein: the magnetic control assembly (8) comprises an iron core (87), a framework (88) and a wire package (89), the iron core (87) is a solid rod-shaped structural member, the iron core (87) comprises a first straight line section and a second straight line section which are sequentially connected, an included angle is formed between the first straight line section and the second straight line section, the iron core (87) is connected with the tape cassette assembly (6), the wire package (89) is sleeved on the framework (88), and the framework (88) is sleeved on the first straight line section of the iron core (87); the bottom ends of the iron cores (87) of the two groups of magnetic control assemblies (8) point to the two opposite sides of the strip outlet end of the contact tube assembly (7) respectively.