阅读说明：本技术 多电源并联焊接系统 (Multi-power-supply parallel welding system ) 是由 王兴阳 顾晓辉 陈立宁 于 2020-11-12 设计创作，主要内容包括：本发明涉及焊接技术领域,提出了一种多电源并联焊接系统,包括焊枪、送丝机、第一电源以及第二电源,第一电源包括第一电极端和第二电极端,第一电极端与送丝机相连接,第二电极端与母材相连接；第二电源包括第三电极端和第四电极端,第三电极端与送丝机相连接,第四电极端与母材相连接；其中,第一电极端与第三电极端的极性相同,第二电极端与第四电极端的极性相同。通过并联的第一电源和第二电源向送丝机送出的焊丝供电,同时向母材供电,从而能够提供大功率焊接能量,保证母材的高熔覆效率,以此提升母材的焊接效果。(The invention relates to the technical field of welding, and provides a multi-power-supply parallel welding system which comprises a welding gun, a wire feeder, a first power supply and a second power supply, wherein the first power supply comprises a first electrode end and a second electrode end, the first electrode end is connected with the wire feeder, and the second electrode end is connected with a base metal; the second power supply comprises a third electrode end and a fourth electrode end, the third electrode end is connected with the wire feeder, and the fourth electrode end is connected with the base material; the first electrode end and the third electrode end have the same polarity, and the second electrode end and the fourth electrode end have the same polarity. The welding wire that send out to the thread feeding machine is supplied power through parallelly connected first power and second power, supplies power to the base metal simultaneously to can provide high-power welding energy, guarantee the high melting of base metal and cover efficiency, with this welding effect who promotes the base metal.)

1. A multi-power parallel welding system, comprising:

a welding gun (10);

a wire feeder (20);

the wire feeder comprises a first power supply (30), wherein the first power supply (30) comprises a first electrode end (31) and a second electrode end (32), the first electrode end (31) is connected with the wire feeder (20), and the second electrode end (32) is connected with a base material (1);

the second power supply (40), the second power supply (40) comprises a third electrode end (41) and a fourth electrode end (42), the third electrode end (41) is connected with the wire feeder (20), and the fourth electrode end (42) is connected with the parent metal (1);

wherein the first electrode end (31) and the third electrode end (41) have the same polarity, and the second electrode end (32) and the fourth electrode end (42) have the same polarity.

2. The multiple power supply parallel welding system according to claim 1, wherein the first electrode terminal (31) and the third electrode terminal (41) are positive electrodes, and the second electrode terminal (32) and the fourth electrode terminal (42) are negative electrodes.

3. The multiple power supply parallel welding system of claim 1, further comprising:

a control unit (50), the control unit (50) being connected to the first power source (30), the control unit (50) being connected to the second power source (40).

4. The multiple power supply parallel welding system of claim 3, wherein said first power supply (30) is a constant voltage power supply and said second power supply (40) is a constant current power supply;

wherein the first power source (30) further comprises a control end (33), the control end (33) being connected with the wire feeder (20).

5. The multiple power supply parallel welding system of claim 4, further comprising:

the gas storage cylinder (60), the gas storage cylinder (60) with send the silk machine (20) to be connected, the gas storage cylinder (60) is used for providing protective gas.

6. The multiple power supply parallel welding system of claim 1, wherein the wire feeder (20) comprises:

the wire feeding machine comprises a wire feeding machine body (21), wherein a first wire feeding groove and a second wire feeding groove are formed in the wire feeding machine body (21), and are arranged at intervals;

the first wire feeding disc (22), the first wire feeding disc (22) is arranged on the wire feeder body (21), and a first welding wire (221) on the first wire feeding disc (22) is fed into the welding gun (10) through the first wire feeding groove;

the second wire feeding disc (23), the second wire feeding disc (23) is arranged on the wire feeder body (21), and a second welding wire (231) on the second wire feeding disc (23) is fed into the welding gun (10) through the second wire feeding groove.

7. The multiple power supply parallel welding system of claim 6, wherein the wire feeder (20) further comprises:

a support wheel (24), the support wheel (24) disposed on the wire feeder body (21);

the pinch roller (25) is arranged on the wire feeder body (21), the pinch roller (25) is positioned above the supporting wheel (24), and the first welding wire (221) and the second welding wire (231) pass through the pinch roller (25) and the supporting wheel (24);

wherein the pressure wheel (25) and the supporting wheel (24) are arranged in a relatively movable manner.

8. The multiple power supply parallel welding system according to claim 6 or 7, wherein the welding gun (10) comprises:

a contact tip (11), said contact tip (11) comprising a first channel (111) and a second channel (112), said first channel (111) for receiving said first wire (221) fed by said first wire feed slot, said second channel (112) for receiving said second wire (231) fed by said second wire feed slot;

wherein the first channel (111) and the second channel (112) are independently provided.

9. The multiple power supply parallel welding system of claim 8, wherein said contact tip (11) further comprises a converging channel (113), said first channel (111) being in communication with said converging channel (113), said second channel (112) being in communication with said converging channel (113);

wherein the converging channel (113) is arranged at one end of the contact tip (11) facing the base material (1).

10. The multiple power supply parallel welding system of claim 1, further comprising:

one or more third power supplies, wherein each third power supply comprises a fifth electrode end and a sixth electrode end, the fifth electrode end is connected with the wire feeder (20), and the sixth electrode end is connected with the parent metal (1);

the first electrode end (31) and the fifth electrode end have the same polarity, and the second electrode end (32) and the sixth electrode end have the same polarity.

Technical Field

The invention relates to the technical field of welding, in particular to a multi-power-supply parallel welding system.

Background

In the welding equipment in the prior art, each welding device comprises a welding power supply, a wire feeder and a welding gun, namely, each welding gun corresponds to one welding power supply, and the maximum deposition efficiency is difficult to further improve due to the limit value of the maximum rated output capacity of one power supply in the welding process.

When carrying out double-wire welding, every welding wire is controlled by a welding power supply respectively, and this kind of double-wire welding needs two welding power supplies to control two welding wires respectively, and this kind of double-wire welding forms 2 electric arcs altogether, has certain interference between the electric arc, and the distance is more serious more closely between the electric arc, causes 2 electric arcs unstability easily, produces the problem that the large granule splashes in the welding process easily.

Disclosure of Invention

The invention provides a multi-power-supply parallel welding system to improve the welding effect.

The invention provides a multi-power-supply parallel welding system, which comprises:

a welding gun;

a wire feeder;

the first power supply comprises a first electrode end and a second electrode end, the first electrode end is connected with the wire feeder, and the second electrode end is connected with the base material;

the second power supply comprises a third electrode end and a fourth electrode end, the third electrode end is connected with the wire feeder, and the fourth electrode end is connected with the base material;

the first electrode end and the third electrode end have the same polarity, and the second electrode end and the fourth electrode end have the same polarity.

In an embodiment of the invention, the first electrode terminal and the third electrode terminal are positive electrodes, and the second electrode terminal and the fourth electrode terminal are negative electrodes.

In one embodiment of the present invention, the multiple power supply parallel welding system further comprises:

the control part is connected with the first power supply and the second power supply.

In one embodiment of the invention, the first power supply is a constant voltage power supply, and the second power supply is a constant current power supply;

the first power supply further comprises a control end, and the control end is connected with the wire feeder.

In one embodiment of the present invention, the multiple power supply parallel welding system further comprises:

the gas storage bottle is connected with the wire feeder and used for providing protective gas.

In one embodiment of the invention, a wire feeder comprises:

the wire feeding machine comprises a wire feeding machine body, wherein a first wire feeding groove and a second wire feeding groove are formed in the wire feeding machine body and are arranged at intervals;

the first wire feeding disc is arranged on the wire feeder body, and a first welding wire on the first wire feeding disc is fed into the welding gun through the first wire feeding groove;

and the second wire feeding disc is arranged on the wire feeder body, and a second welding wire on the second wire feeding disc is fed into the welding gun through the second wire feeding groove.

In one embodiment of the present invention, the wire feeder further comprises:

the supporting wheel is arranged on the wire feeder body;

the pinch roller is arranged on the wire feeder body, the pinch roller is positioned above the supporting wheel, and the first welding wire and the second welding wire pass through the pinch roller and the supporting wheel;

wherein, the pinch roller and the supporting wheel are arranged movably relatively.

In one embodiment of the invention, a welding gun comprises:

the contact tip comprises a first passage and a second passage, the first passage is used for receiving a first welding wire fed out by the first wire feeding groove, and the second passage is used for receiving a second welding wire fed out by the second wire feeding groove;

wherein the first channel and the second channel are independently arranged.

In one embodiment of the present invention, the contact tip further comprises a converging channel, the first channel being in communication with the converging channel, the second channel being in communication with the converging channel;

the converging channel is arranged at one end, facing the base material, of the contact tip.

In one embodiment of the present invention, the multiple power supply parallel welding system further comprises:

one or more third power supplies, wherein each third power supply comprises a fifth electrode end and a sixth electrode end, the fifth electrode end is connected with the wire feeder, and the sixth electrode end is connected with the base material;

the first electrode end and the fifth electrode end have the same polarity, and the second electrode end and the sixth electrode end have the same polarity.

The multi-power-supply parallel welding system supplies power to the welding wire sent out by the wire feeder through the first power supply and the second power supply which are connected in parallel, and supplies power to the base metal, so that high-power welding energy can be provided, high cladding efficiency of the base metal is guaranteed, and the welding effect of the base metal is improved.

Drawings

Various objects, features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

FIG. 1 is a schematic diagram illustrating a multiple power supply parallel welding system in accordance with an exemplary embodiment;

FIG. 2 is a schematic diagram illustrating a wire feeder of a multiple power supply parallel welding system in accordance with an exemplary embodiment;

FIG. 3 is a schematic diagram illustrating a contact tip configuration for a multiple power supply parallel welding system in accordance with an exemplary embodiment;

FIG. 4 is a schematic diagram illustrating a contact tip configuration for a multiple power supply parallel welding system, according to another exemplary embodiment.

The reference numerals are explained below:

1. a base material; 2. welding wires; 3. an electric arc; 10. a welding gun; 11. a contact tip; 111. a first channel; 112. a second channel; 113. a convergence channel; 20. a wire feeder; 21. a wire feeder body; 22. a first wire feeding disc; 221. a first welding wire; 23. a second wire feeding disc; 231. a second welding wire; 24. a support wheel; 25. a pinch roller; 26. pressing the arm; 30. a first power supply; 31. a first electrode terminal; 32. a second electrode terminal; 33. a control end; 34. a control line; 40. a second power supply; 41. a third electrode terminal; 42. a fourth electrode terminal; 50. a control unit; 60. a gas cylinder.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are accordingly to be regarded as illustrative in nature and not as restrictive.

In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of the invention.

One embodiment of the present invention provides a multi-power parallel welding system, referring to fig. 1, the multi-power parallel welding system includes: a welding gun 10; a wire feeder 20; the first power supply 30, the first power supply 30 includes a first electrode end 31 and a second electrode end 32, the first electrode end 31 is connected with the wire feeder 20, and the second electrode end 32 is connected with the base material 1; the second power supply 40, the second power supply 40 includes a third electrode end 41 and a fourth electrode end 42, the third electrode end 41 is connected with the wire feeder 20, and the fourth electrode end 42 is connected with the base material 1; the first electrode terminal 31 and the third electrode terminal 41 have the same polarity, and the second electrode terminal 32 and the fourth electrode terminal 42 have the same polarity.

The multi-power-supply parallel welding system in one embodiment of the invention supplies power to the welding wire 2 sent by the wire feeder 20 through the first power supply 30 and the second power supply 40 which are connected in parallel, and simultaneously supplies power to the base metal 1, so that high-power welding energy can be provided, high cladding efficiency of the base metal 1 is ensured, and the welding effect of the base metal 1 is improved.

It should be noted that the first electrode end 31 is connected to the wire feeder 20, and the third electrode end 41 is connected to the wire feeder 20, that is, the first power source 30 and the second power source 40 are electrically connected to the welding wire 2 of the wire feeder 20. The second electrode end 32 is connected with the base material 1, and the fourth electrode end 42 is connected with the base material 1, that is, the first power supply 30 and the second power supply 40 are simultaneously electrically connected with the base material 1, during the operation of the welding gun 10, a strong and durable gas discharge phenomenon is generated between the base material 1 and the welding wire 2, that is, an arc 3 is formed, and the heat generated by the arc 3 melts the base material 1 and the welding wire 2 mutually and forms a welding seam after condensation.

The first electrode terminal 31 is connected to the third electrode terminal 41. The second electrode terminal 32 is connected with the fourth electrode terminal 42. The positive poles of the first power source 30 and the second power source 40 may be connected to the wire feeder 20 at the same time, and the negative poles of the first power source 30 and the second power source 40 may be connected to the base material 1 at the same time. Alternatively, the cathodes of the first power source 30 and the second power source 40 may be connected to the wire feeder 20 at the same time, and the anodes of the first power source 30 and the second power source 40 may be connected to the base material 1 at the same time. The method is not limited herein, and may be selected according to implementation requirements. Wherein, welding wire 2 is the filler, and base metal 1 is the work piece that is welded.

In one embodiment, the first electrode terminal 31 and the third electrode terminal 41 are negative electrodes, and the second electrode terminal 32 and the fourth electrode terminal 42 are positive electrodes.

In one embodiment, as shown in fig. 1, the first electrode terminal 31 and the third electrode terminal 41 are positive electrodes, and the second electrode terminal 32 and the fourth electrode terminal 42 are negative electrodes.

In one embodiment, as shown in fig. 1, the multiple power supply parallel welding system further comprises: and a control unit 50, wherein the control unit 50 is connected to the first power supply 30, and the control unit 50 is connected to the second power supply 40. The control unit 50 may be an independent control box.

Specifically, the control unit 50 is connected to the first power supply 30 and the second power supply 40, respectively, and the control unit 50 has setting and adjusting functions. The control unit 50 may be configured to set the first power supply 30 and the second power supply 40 as a master and a slave, for example, the first power supply 30 may be set as a master and the second power supply 40 may be set as a slave. The control unit 50 is configured to set a welding current and a welding voltage, the set current may be distributed to the first power supply 30 and the second power supply 40 according to a certain matching rule, and the set voltage may be directly distributed to the host machine. The control unit 50 may also perform setting of other welding functions, such as selection of welding material, wire diameter, gas detection, and other functions.

In one embodiment, the first power supply 30 is a constant voltage power supply, and the second power supply 40 is a constant current power supply; the first power source 30 further includes a control end 33, and the control end 33 is connected to the wire feeder 20.

Specifically, the control unit 50 sets the first power supply 30 as the master, and the control unit 50 sets the second power supply 40 as the slave. The first power supply 30 is a consumable electrode gas shielded welding power supply. The first power supply 30 is a constant voltage source, the first power supply 30 is connected to the wire feeder 20 through a control line 34 (both ends of the control line 34 are respectively connected to the control terminal 33 and the wire feeder 20), and the wire feeding speed of the wire feeder 20 is controlled by the first power supply 30. The positive electrode of the first power source 30 is connected to the wire feeder 20, and the negative electrode is connected to the base material 1. The first power supply 30 is responsible for the control of the arc voltage feedback of the welding process to ensure the stability of the arc 3 during the welding process.

Accordingly, the second power source 40 is a consumable electrode gas shielded welding power source. The second power source 40 is a constant current source and is connected in parallel to the first power source 30, and the positive electrode of the second power source 40 is connected to the wire feeder 20 and the negative electrode is connected to the base material 1. The second power source 40 does not control the wire feed speed of the wire feeder 20. In the welding process, the second power source 40 only outputs a constant current, and the constant current is superposed with the current output by the first power source 30 to melt the welding wire 2, so that the melting efficiency of the welding wire 2 can be improved.

In one embodiment, the first power supply 30 and the second power supply 40 may both be constant voltage power supplies.

In one embodiment, as shown in fig. 1, the multiple power supply parallel welding system further comprises: and the gas storage cylinder 60, the gas storage cylinder 60 is connected with the wire feeder 20, and the gas storage cylinder 60 is used for providing protective gas. Since the control terminal 33 of the first power source 30 is connected to the wire feeder 20, the first power source 30 may also be used to control components such as a control valve of the gas cylinder 60, thereby controlling the amount and rate of gas delivered from the gas cylinder 60. The gas cylinder 60 provides a protective atmosphere for the arc 3 and the weld pool during welding.

In one embodiment, as shown in FIG. 2, the wire feeder 20 includes: the wire feeding machine comprises a wire feeding machine body 21, wherein a first wire feeding groove and a second wire feeding groove are formed in the wire feeding machine body 21, and are arranged at intervals; the first wire feeding disc 22, the first wire feeding disc 22 is arranged on the wire feeder body 21, and the first welding wire 221 on the first wire feeding disc 22 is fed into the welding gun 10 through the first wire feeding groove; and a second wire feeding disk 23, wherein the second wire feeding disk 23 is arranged on the wire feeder body 21, and a second welding wire 231 on the second wire feeding disk 23 is fed into the welding gun 10 through the second wire feeding groove.

Specifically, the wire feeder 20 may simultaneously feed the first wire 221 and the second wire 231, the first wire 221 and the second wire 231 forming the wire 2 of fig. 1. The first power source 30 and the second power source 40 simultaneously supply power to the first welding wire 221 and the second welding wire 231, that is, in the embodiment, the first power source 30 and the second power source 40 form a double power source and supply power to the double welding wires in parallel, at this time, the first welding wire 221 and the second welding wire 231 form an arc 3, the arc 3 has no interference problem, and the parallel connection of the first power source 30 and the second power source 40 also breaks the limit value of the maximum rated output capacity of a single power source, has the same deposition efficiency as the tandem double wire welding, and forms an arc 3, so that the problem of arc interference is avoided, the welding process has low spatter, and the weld is attractive in appearance.

It should be noted that, compared to tandem twin-wire welding, that is, each welding wire is controlled by one welding power source, the twin-wire welding needs two welding power sources to control two welding wires respectively, and has the advantages of high welding speed and high welding coverage efficiency, but because the twin-wire welding forms 2 arcs together, there is a certain interference between the arcs, and the closer the distance between the arcs is, the more serious the interference is, the more unstable 2 arcs are easily caused, and the problem of large particle spatter easily generated in the welding process is easily caused. The above-mentioned scheme of the present embodiment can avoid the problems of the tandem dual wire bonding.

In one embodiment, as shown in FIG. 2, the wire feeder 20 further includes: a support wheel 24, the support wheel 24 being provided on the wire feeder body 21; the pressing wheel 25 is arranged on the wire feeder body 21, the pressing wheel 25 is positioned above the supporting wheel 24, and the first welding wire 221 and the second welding wire 231 pass through the pressing wheel 25 and the supporting wheel 24; the pressing wheel 25 and the supporting wheel 24 are movably arranged relatively, so that the pressure formed on the first welding wire 221 and the second welding wire 231 can be adjusted, and the first welding wire 221 and the second welding wire 231 can be reliably fed into the welding gun 10.

It should be noted that the supporting wheel 24 can be a fixed part, and the pressing wheel 25 can be a movable part, and the pressing wheel 25 can be driven by the pressing arm 26, so that the pressing wheel 25 can move up and down, thereby adjusting the size of the gap between the pressing wheel 25 and the supporting wheel 24.

Alternatively, support wheel 24 may be a movable member and pressure wheel 25 may be a stationary member. Alternatively, the supporting wheels 24 and the pressing wheels 25 may be movable members, and the movement is achieved by driving at least one of the supporting wheels 24 and the pressing wheels 25 through some driving mechanism, which is not limited herein.

In one embodiment, as shown in fig. 3 and 4, the torch 10 includes: a contact tip 11, contact tip 11 including a first passage 111 and a second passage 112, first passage 111 for receiving a first welding wire 221 fed from a first wire feeding slot, second passage 112 for receiving a second welding wire 231 fed from a second wire feeding slot; the first passage 111 and the second passage 112 are independently arranged, so that the first welding wire 221 and the second welding wire 231 are prevented from crossing in the moving process.

Specifically, the welding gun 10 further includes a wire feeding pipe for receiving the first and second welding wires 221 and 231 and ensuring that the first and second welding wires 221 and 231 fed out from the wire feeding pipe enter the first and second passages 111 and 112, respectively.

The wire feeding tube and the contact tip 11 are arranged inside the welding gun 10, the wire feeding tube is used for conveying welding wires, and the contact tip 11 is in contact with the welding wires and plays a role in conducting electricity. The contact tip 11 may pass through both the first wire 221 and the second wire 231 to form an arc 3 and a puddle during welding.

It should be noted that the wire feeding pipes may be two, that is, two wire feeding pipes correspond to the first passage 111 and the second passage 112, respectively. Of course, the wire feeding pipes may be one, and one wire feeding pipe corresponds to the first passage 111 and the second passage 112.

In one embodiment, as shown in fig. 3, the welding gun 10 is provided with only the first and second passages 111, 112, i.e., the first and second welding wires 221, 231 do not converge within the welding gun 10.

In one embodiment, as shown in FIG. 4, contact tip 11 further includes a converging passage 113, with first passage 111 communicating with converging passage 113, and second passage 112 communicating with converging passage 113; in this case, the converging passage 113 is provided at an end of the contact tip 11 facing the base material 1, so that the first welding wire 221 and the second welding wire 231 are converged in the welding gun 10 and then fed out.

In one embodiment, one or more third passages may also be provided in the torch 10, which are separate from the first and second passages 111, 112. Correspondingly, the wire feeder 20 may further include one or more third wire feeding trays, and one or more third wire feeding grooves are further disposed on the wire feeder body 21, that is, one wire feeder 20 may realize feeding of at least three welding wires.

In one embodiment, the multiple power supply parallel welding system further comprises: one or more third power supplies, wherein each third power supply comprises a fifth electrode end and a sixth electrode end, the fifth electrode end is connected with the wire feeder 20, and the sixth electrode end is connected with the base material 1; the first electrode terminal 31 and the fifth electrode terminal have the same polarity, and the second electrode terminal 32 and the sixth electrode terminal have the same polarity. I.e. the power supplies may also be at least three used in parallel.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and exemplary embodiments be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.