Welding wire feeder and welding equipment

Abstract

The utility model relates to a welding wire feeder and welding equipment, and relates to the technical field of welding. The welding wire feeder comprises a wire feeding nozzle and a cooling device, a wire feeding channel is formed in the wire feeding nozzle, the cooling device is connected with the wire feeding nozzle, and the cooling device is used for introducing a cooling medium into the wire feeding channel to lower the temperature of the wire feeding nozzle. The temperature of the wire feeding nozzle is reduced through the cooling device, the situation that the temperature of the wire feeding nozzle is too high, so that the welding wire in the wire feeding nozzle is melted, and the wire feeding nozzle is blocked can be avoided, and the welding wire feeder can adapt to long-time welding work without affecting stretching of the welding wire.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a welding wire feeder and welding equipment. Background Art

[0002] In order to align the welding wire with the welding target, a wire feeder is set at the end of some welding equipment to control the position of the welding wire. In order to prevent the welding wire from deviating relative to the wire feeder and affecting the welding accuracy, the hole size for the welding wire to pass through in the wire feeder is required to be small, thereby limiting the extension direction of the welding wire.

[0003] However, the welding wire generates a lot of heat during welding, which causes the wire feeder and the wire in the wire feeder to heat up. During long-term continuous welding, the high temperature often causes the welding wire to melt in the wire feeder. The outlet size of the wire feeder is small, and the melted welding wire often adheres to the wire feeder, blocking the already small wire feeding channel, causing damage to the wire feeder nozzle and reducing its service life. Utility Model Content

[0004] The utility model provides a welding wire feeder and welding equipment, which are used to solve the technical problem that the welding wire melts in the welding wire feeder and affects the subsequent welding wire to extend out of the welding wire feeder.

[0005] In a first aspect, the utility model provides a welding wire feeder, comprising: a wire feeding nozzle, a wire feeding channel formed in the wire feeding nozzle, the wire feeding channel is used for the welding wire to pass through; and a cooling device, the cooling device is connected to the wire feeding nozzle, and the cooling device is constructed to pass a cooling medium into the wire feeding channel to reduce the temperature in the wire feeding channel.

[0006] In one embodiment, an air guide channel is formed in the wire feeding nozzle, and the air guide channel is connected to the wire feeding channel; the cooling device is connected to the air guide channel, and the cooling medium is cooling gas.

[0007] In one embodiment, the wire feeding channel extends along the axial direction of the wire feeding nozzle, and the air guiding channel extends along the radial direction of the wire feeding nozzle.

[0008] In one embodiment, the pressure of the cooling medium introduced into the temperature reduction device is 0.2 MPa-0.3 MPa.

[0009] In one embodiment, the welding wire entry end of the wire feeding nozzle is detachably connected to an adapter, and the adapter is installed with a wire tube. The inner diameter of the wire tube corresponds to the outer diameter of the welding wire, and the outer diameter of the wire tube is smaller than the inner diameter of the wire feeding channel. When the adapter is connected to the wire feeding nozzle, the wire tube is inserted into the wire feeding channel.

[0010] In one embodiment, the wire feeding nozzle includes a first housing and a second housing. The wire feeding channel includes a first hole section and a second hole section. The first hole section is formed in the first housing, and the second hole section is formed in the second housing. When the second housing is installed on the first housing, the first hole section communicates with the second hole section.

[0011] In one embodiment, the first housing is provided with a first positioning structure, and the second housing is provided with a second positioning structure. The first positioning structure cooperates with the second positioning structure such that when the second housing is installed on the first housing, the first hole section and the second hole section are coaxial.

[0012] In one embodiment, it further includes a driving wheel and a shaping wheel. The driving wheel and the shaping wheel enclose a shaping channel for the welding wire to pass through. The shaping channel is correspondingly arranged with the wire feeding channel. The driving wheel is configured to drive the welding wire located in the shaping channel to move towards the wire feeding channel.

[0013] In one embodiment, it further includes an elastic member. The elastic member is connected to the shaping wheel, and the elastic member is used to drive the shaping wheel to move towards the direction close to the driving wheel.

[0014] In a second aspect, the present utility model further provides a welding device, which includes the above-mentioned welding wire feeder.

[0015] Compared with the prior art, the advantages of the present utility model are that the wire feeding channel of the wire feeding nozzle can limit the moving direction of the welding wire, ensuring the welding precision. Through the cooling device, a cooling medium can be introduced into the wire feeding channel to reduce the temperature of the welding wire in the wire feeding channel, avoiding the melting of the welding wire in the wire feeding nozzle and blocking the wire feeding nozzle. This enables the welding wire feeder to adapt to long-term welding work. It avoids the damage of the wire feeding nozzle during welding and improves the service life of the wire feeding nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Hereinafter, the present utility model will be described in more detail based on embodiments and with reference to the drawings.

[0017] Figure 1 is a perspective structural schematic diagram of the welding wire feeder in the embodiment of the present utility model;

[0018] Figure 2 is a front view structural schematic diagram of the wire feeding nozzle in the embodiment of the present utility model;

[0019] Figure 3 is Figure 2 a cross-sectional structural schematic diagram of the A-A section in

[0020] Figure 4 is a cross-sectional structural schematic diagram of the wire feeding nozzle after hiding the adapter and the wire conduit;

[0021] Figure 5It is a front view structural schematic diagram of a wire feeding nozzle connected with an air inlet pipe and an air outlet pipe in an embodiment of the present utility model;

[0022] Figure 6 It is Figure 5 a top view structural schematic diagram;

[0023] Figure 7 It is a three-dimensional structural schematic diagram of an adapter in an embodiment of the present utility model;

[0024] Figure 8 It is Figure 7 a cross-sectional structural schematic diagram;

[0025] Figure 9 It is a three-dimensional structural schematic diagram of a first housing in an embodiment of the present utility model;

[0026] Figure 10 It is a three-dimensional structural schematic diagram of a second housing in an embodiment of the present utility model.

[0027] Reference numerals:

[0028] 100, wire feeding device;

[0029] 110, wire feeding nozzle; 111, first housing; 1111, first positioning structure; 112, second housing; 1121, second positioning structure; 113, wire conduit; 114, adapter; 115, lock nut;

[0030] 120, wire feeding channel; 121, first hole section; 122, second hole section; 125, air guiding channel;

[0031] 130, cooling device; 131, air inlet pipe; 132, air outlet pipe;

[0032] 141, driving wheel; 1411, second annular wire groove; 142, shaping wheel; 143, elastic member; 144, support bracket; 145, driving member; 146, lead pipe; 147, movable rod; 148, wire reel. Detailed implementation manners

[0033] The present utility model will be further described below in conjunction with the accompanying drawings.

[0034] It should be noted that the heating component in the welding equipment refers to the welding torch, and the wire feeder 100 in this application does not generate heat independently. Currently, there are mature cooling solutions for the heat-generating welding torch, but the cooling of the wire feeder 100 has been neglected. In some high-intensity welding operations, not only the heat-generating welding torch needs to be cooled to ensure its long-term operation. The present utility model proposes that high temperature will also cause the wire in the wire feeder 100 to melt, resulting in the wire being unable to extend out of the wire feeder 100, causing the wire to be blocked and affecting the welding work. This will block the already narrow wire feeding channel, causing damage to the wire feeding nozzle and reducing the service life.

[0035] To solve the above problems, this application provides a wire feeder 100 and a welding equipment to solve the problem that the wire in the wire feeder 100 melts and causes the wire feeder 100 to be blocked in the related art.

[0036] See Figures 1-4 As shown, a wire feeder 100 provided by an embodiment of the present utility model, the wire feeder 100 includes a wire feeding nozzle 110 and a cooling device 130. A wire feeding channel 120 is formed in the wire feeding nozzle 110. When in use, the wire is inserted into the wire feeding channel 120, which can limit the movement range of the wire during the welding process and improve the welding accuracy. The cooling device 130 can introduce a cooling medium into the wire feeding channel 120 to reduce the temperature in the wire feeding channel 120.

[0037] In some implementation manners, the cooling device 130 uses gas to cool the wire feeding nozzle 110. It can be understood that in other implementation manners, the cooling device 130 can also use liquid to cool the wire feeding nozzle 110, or use a low-temperature solid to cool the wire feeding nozzle 110, as long as the effect of reducing the temperature of the wire feeding nozzle 110 can be achieved.

[0038] See Figure 4 As shown, a gas guiding channel 125 is also formed in the wire feeding nozzle 110, and the wire feeding channel 120 is communicated with the gas guiding channel 125. When using the wire feeder 100, the gas guiding channel 125 can be communicated with the cooling device 130, and the heat in the wire feeder 100 can be carried out by using the airflow provided by the cooling device 130, reducing the temperature in the wire feeder 100, and avoiding the wire in the wire feeder 100 from melting and blocking the wire feeding channel 120 of the wire feeder 100.

[0039] Among them, the cooling device 130 can introduce an inert gas (such as argon or helium) into the air guide channel 125 to avoid oxidation of the welding wire when cooling the wire feeding nozzle 110. In some implementation manners, the cooling effect of the cooling device 130 can be improved by reducing the temperature of the gas introduced into the air guide channel 125. When introducing the inert gas, the sealing performance requirement for the wire feeding nozzle 110 is relatively low. Even if a small amount of inert gas follows the welding wire to the molten metal at the weld, the inert gas can also play a role in isolating air and avoiding oxidation of the molten metal.

[0040] Specifically, the cooling device 130 includes a gas supply container. The gas supply container stores a low-temperature cooling gas. The gas supply container is connected with an intake pipe 131 and an outlet pipe 132. One end of the air guide channel 125 is connected with the intake pipe 131, and the other end of the air guide channel 125 is connected with the outlet pipe 132. And a booster pump is further arranged in the gas supply container. The booster pump can boost and pump the cooling gas into the intake pipe 131. The cooling gas in the intake pipe 131 leads to the air guide channel 125 of the wire feeding nozzle 110 along the pipeline extension direction and flows into the wire feeding channel 120 connected with the air guide channel 125 to cool the wire feeding channel 120.

[0041] Certainly, in some implementation manners, in order to reduce the loss of the inert gas, the cooling device 130 can also be used to introduce air into the air guide channel 125 to reduce the temperature of the wire feeding nozzle 110 and the welding wire and avoid blockage of the wire feeding nozzle 110 caused by melting of the welding wire in the wire feeding nozzle 110. It can be understood that the gas component provided by the cooling device 130 is adjusted according to the actual situation as long as the effect of reducing the temperature of the wire feeding nozzle 110 can be achieved.

[0042] Among them, when introducing air to cool the wire feeding nozzle 110, a sealing structure can be arranged at the wire feeding nozzle 110 to avoid oxidation of the molten metal at the weld due to the overflow of the air for cooling from the wire feeding nozzle 110. For example, at the outlet end of the wire conduit 113 ( Figure 3 the lower end of the middle wire conduit 113) outside is sleeved with a sealing ring. The sealing ring is used to make the outlet end of the wire conduit 113 be hermetically connected with the inner wall of the wire feeding channel 120 to avoid the gas introduced into the air guide channel 125 from flowing out through the gap between the wire conduit 113 and the wire feeding channel 120.

[0043] In some implementation manners, the temperature of the cooling medium can be adjusted to room temperature. In another implementation manner, the temperature of the cooling medium can also be set lower than room temperature. The temperature of the cooling medium can be determined according to the heat of welding.

[0044] In some implementations, a control valve for regulating the flow rate of the cooling medium may also be integrated in the cooling device 130, and a temperature detection device is provided at the wire feeding nozzle 110. The temperature of the wire feeding nozzle 110 is measured by the temperature detection device, and the gas flow rate into the air guiding channel 125 is regulated by the control valve. Furthermore, when the temperature in the wire feeding nozzle 110 is high, a larger flow rate of the cooling medium is introduced into the air guiding channel 125 through the control valve, and when the temperature in the wire feeding nozzle 110 is low, a smaller flow rate of the cooling medium is introduced into the air guiding channel 125 through the control valve. By connecting the temperature detection device to the control valve, the loss of the cooling medium can be reduced when the wire feeding nozzle 110 is not overheated, the cost can be lowered, and it is more suitable for low-frequency welding work. It can also increase the inflow rate of the cooling medium when the wire feeding nozzle 110 is overheated to ensure the cooling effect of the cooling device.

[0045] In some implementations, to avoid melting of the wire feeding nozzle 110, the wire feeding nozzle 110 is made of a metal material.

[0046] See Figure 5 and Figure 6 As shown, the cooling device 130 includes an air inlet pipe 131, an air outlet pipe 132, and a gas supply device (not shown in the figure). The air inlet pipe 131 is communicated with one end of the air guiding channel 125, and the air outlet pipe 132 is communicated with the other end of the air guiding channel 125. By supplying gas to the air inlet pipe 131 through the gas supply device, the cooling gas can flow from the air inlet pipe 131 to the air outlet pipe 132.

[0047] In some implementations, the gas flowing out of the air outlet pipe 132 can be cooled and then introduced into the gas supply device again to achieve the recycling of the gas. In some implementations, both the air outlet pipe 132 and the air inlet pipe 131 are made of a metal material, such as stainless steel. Compared with a plastic pipe body or a rubber pipe, the metal pipe has better heat conduction effect and can conduct the heat in the pipe faster, improving the cooling effect of the cooling device 130.

[0048] See Figure 4 and Figure 6 As shown, the wire feeding channel 120 extends along the axial direction of the wire feeding nozzle 110, while the air guiding channel 125 extends along the radial direction of the wire feeding nozzle 110. The inlet and outlet of the air guiding channel 125 can be formed on the circumferential side surface of the wire feeding nozzle 110, and the inlet and outlet of the wire feeding channel 120 can be formed on the upper and lower end surfaces of the wire feeding nozzle 110. Thus, by arranging the inlet and outlet of the air guiding channel 125 and the inlet and outlet of the wire feeding channel 120 on different side surfaces of the wire feeding nozzle 110, the air inlet pipe 131 and the air outlet pipe 132 can be set at a relatively far distance from the inlet and outlet of the wire feeding channel 120, avoiding the influence on the extension of the welding wire into and out of the wire feeding channel 120 due to the arrangement of the air inlet pipe 131 and the air outlet pipe 132.

[0049] That is to say, compared with the parallel arrangement of the air guide channel 125 and the wire feeding channel 120, in this application, the air guide channel 125 is arranged radially and the wire feeding channel 120 is arranged axially, which can reduce the occlusion of the inlet and outlet of the wire feeding channel 120 and facilitate the insertion or extraction of the welding wire into or out of the wire feeding channel 120.

[0050] In addition, the wire feeding channel 120 extends along the axis direction of the wire feeding nozzle 110, while the air guide channel 125 extends radially. Compared with starting multiple axially extending channels on the wire feeding nozzle 110, the radial dimension requirement for the wire feeding nozzle 110 is smaller, which can reduce the material cost of the wire feeding nozzle 110.

[0051] Moreover, by arranging the air guide channel 125 radially and the wire feeding channel 120 axially, the air guide channel 125 and the wire feeding channel 120 can be perpendicular to each other, that is, there is a large included angle (90°) between the air guide channel 125 and the wire feeding channel 120, which can prevent the welding wire from entering the air guide channel 125.

[0052] In some implementation manners, the air supply air pressure range of the cooling device 130 is 0.2 MPa to 0.3 MPa. That is to say, when the cooling device 130 supplies air to the air guide channel 125, the gas is pressurized (greater than the atmospheric pressure by 0.1 MPa) to increase the gas flow rate in the air guide channel 125 and improve the cooling effect on the wire feeding nozzle 110.

[0053] Due to the increase in the gas flow rate, the gas flow rate in the air guide channel 125 can be made greater than the gas flow rate in the wire feeding channel 120. According to Bernoulli's principle, at the connection between the air guide channel 125 and the wire feeding channel 120, the air pressure in the air guide channel 125 will be lower than the air pressure in the wire feeding channel 120, so that the gas in the wire feeding channel 120 will flow towards the air guide channel 125, avoiding the stagnation of the gas in the wire feeding channel 120 and affecting the cooling effect of the cooling device 130.

[0054] By limiting the air supply air pressure range of the cooling device 130 to 0.2 MPa to 0.3 MPa, it is avoided that excessive air pressure leads to excessive gas introduction and oxidation of the welding wire.

[0055] See Figure 3 、 Figure 4 、 Figure 7 and Figure 8As shown, in some implementations, a transfer member 114 is detachably connected to the wire inlet end of the wire feeding nozzle 110. A wire conduit 113 is installed on the transfer member 114. The inner diameter of the wire conduit 113 corresponds to the outer diameter of the welding wire. The outer diameter of the wire conduit 113 is smaller than the inner diameter of the wire feeding channel 120. When the transfer member 114 is connected to the wire feeding nozzle 110, the wire conduit 113 is inserted into the wire feeding channel 120. During use, the welding wire is inserted into the wire conduit 113, and the movement direction of the welding wire is restricted by the wire conduit 113. Compared with the larger-diameter wire feeding channel 120, the thinner wire conduit 113 can better restrict the movement direction of the welding wire and prevent the welding wire from shifting.

[0056] At the same time, by providing the wire conduit 113 for the welding wire to pass through, it can also prevent the welding wire from directly contacting the gas in the wire channel, reducing the risk of oxidation of the welding wire by the gas in the wire channel.

[0057] Since the transfer member 114 is detachably connected to the wire feeding nozzle 110, different transfer members 114 can be replaced to achieve the replacement of the wire conduit 113, thereby adapting to welding wires of different diameters. Compared with replacing the wire feeding nozzle 110, only replacing the transfer member 114 has a lower cost.

[0058] Since the outer diameter of the wire conduit 113 is smaller than the inner diameter of the wire feeding channel 120, a gap will be formed between the outer wall of the wire conduit 113 and the inner wall of the wire feeding channel 120. When the cooling medium in the air guiding channel 125 flows through the wire feeding channel 120, the cooling medium will flow into the outside of the wire conduit 113. Through the heat exchange between the cooling medium and the outer wall of the wire conduit 113, the heat of the wire conduit 113 can be exported faster, realizing the cooling of the wire conduit 113 and the welding wire inside the wire conduit 113.

[0059] In some implementations, the transfer member 114 is made of polyimide. Compared with ordinary rubber materials, polyimide has good high-temperature resistance and friction resistance. The upper aperture of the transfer member 114 is equal to or slightly larger than the outer diameter of the welding wire, so that the welding wire can be inserted into the transfer member 114 from the upper opening of the transfer member 114. The lower aperture of the transfer member 114 is larger than its upper aperture, and the wire conduit 113 is inserted into the lower opening of the transfer member 114 and is tightly connected to the transfer member 114. The transfer member 114 can guide the welding wire inserted into the upper opening of the transfer member 114 into the wire conduit 113.

[0060] See Figure 3As shown, the adapter 114 is installed at the end of the first housing 111, and a locking nut 115 is also connected to the end of the first housing 111. The bottom of the locking nut 115 is provided with internal threads. When the locking nut 115 is threadedly connected to the external threads at the end of the first housing 111, the locking nut 115 and the first housing 111 form a receiving cavity. The adapter 114 is partially received in the receiving cavity, and the locking nut 115 presses the adapter 114 against the first housing 111 to prevent the adapter 114 from moving.

[0061] In other implementation manners, the adapter 114 can be detachably connected to the wire feeding nozzle 110 through fixing screws or a claw structure. The detachable installation manner of the adapter 114 is not limited to being realized through the locking nut 115.

[0062] In some implementation manners, the wire conduit 113 is made of SUS420 stainless steel, which has good thermal conductivity and can quickly conduct the heat of the welding wire to the gas in the wire channel to accelerate the cooling of the welding wire. Moreover, SUS420 stainless steel can be easily made into a smooth light pipe to reduce the friction force between the welding wire and the wire conduit 113, thereby avoiding the melting of the welding wire caused by frictional heat generation. In addition, SUS420 has good anti-friction characteristics and can have a long service life.

[0063] See Figure 3 、 Figure 9 and Figure 10 As shown, the wire feeding nozzle 110 includes a first housing 111 and a second housing 112. The second housing 112 is detachably installed on the first housing 111. The wire feeding channel 120 includes a first hole section 121 and a second hole section 122. The first hole section is formed inside the first housing 111, and the second hole section is formed inside the second housing. When the second housing 112 is installed on the first housing 111, the first hole section 121 communicates with the second hole section 122.

[0064] That is to say, the wire feeding channel 120 includes two sections, namely the first hole section 121 and the second hole section 122. When the wire feeding channel 120 is blocked, the first housing 111 and the second housing 112 can be separated to make the first hole section 121 and the second hole section 122 independent of each other.

[0065] It can be understood that the length of the single first hole section 121 or the length of the single second hole section 122 is less than the length of the wire feeding channel 120. When cleaning the wire feeding channel 120, the first housing 111 and the second housing 112 can be separated first, so that the wire feeding channel 120 forms a hole structure separated into two sections of the first hole section 121 and the second hole section 122. Since the length of the first hole section 121 (or the second hole section 122) is short, the difficulty of cleaning is lower than that of cleaning the complete wire feeding channel 120. The difficulty of cleaning the wire feeding channel 120 after disassembling the wire feeding nozzle 110 is lower than that of directly cleaning the wire feeding channel 120.

[0066] That is to say, in the present application, by setting the wire feeding channel 120 in sections, it is possible to clean the blockage in the wire feeding channel 120 more easily and reduce the difficulty of cleaning the wire feeding channel 120.

[0067] In some implementation manners, the wire feeding nozzle 110 may further include a third housing in addition to the first housing 111 and the second housing 112, and a third hole section is formed in the third housing. The first hole section 121, the second hole section 122, and the third hole section are connected in sequence, and the wire feeding channel 120 is jointly composed of the first hole section 121, the second hole section 122, and the third hole section. That is, the wire feeding channel 120 is not limited to a two-section hole structure, and can also be set as a three-section hole structure. It can be understood that the wire feeding channel 120 can also be set into more sections, and each section is formed in a different component. Thereby reducing the hole length of each section and reducing the difficulty of cleaning the wire feeding channel 120.

[0068] In some implementation manners, both the first housing 111 and the second housing 112 are made of stainless steel material. Compared with the conventional plastic housing, the stainless steel housing has better heat conduction effect and can conduct the heat in the wire feeding nozzle 110 faster, avoiding the fusion of the welding wire in the wire feeding nozzle 110 due to high temperature.

[0069] In other implementation manners, the first housing 111 and the second housing 112 can also be made of different materials. For example, the first housing 111 is made of plastic, while the second housing 112 is made of stainless steel material. Among them, the second housing 112 with better heat conduction effect can be arranged at one end of the wire feeding nozzle 110 close to the weld seam. So that the high-temperature area of the wire feeding nozzle 110 can conduct heat faster, while the low-temperature area is made of materials with lower cost, reducing the material cost while achieving roughly the same heat dissipation effect.

[0070] See Figure 3As shown, the first housing 111 is disposed at the wire inlet end of the wire feeding nozzle 110, and the second housing 112 is disposed at the wire outlet end of the wire feeding nozzle 110. The air guiding channel 125 is disposed at the second housing 112 and is directly communicated with the second hole section 122. That is to say, the cooling medium in the air guiding channel 125 first enters the second hole section 122 to cool the second housing 112, and then gradually flows into the first hole section 121 along the second hole section 122 to cool the first housing 111. By disposing the air guiding channel 125 inside the second housing 112, the second housing 112 close to the heat source can be cooled faster, and the heat at the high temperature area (the second housing 112) can be taken away faster, avoiding the melting of the wire in the wire feeding nozzle 110.

[0071] See Figure 3 and Figure 4 As shown, in some implementation manners, the second housing 112 is detachably mounted on the first housing 111 by providing a threaded hole on the first housing 111 and threadedly connecting a screw to the threaded hole. It can be understood that a threaded hole can also be provided on the second housing 112, and the first housing 111 can be detachably fixed to the second housing 112 by threadedly connecting a screw to the second housing 112.

[0072] In other implementation manners, the first housing 111 and the second housing 112 can also be detachably connected by other means. For example, the first housing 111 and the second housing 112 are connected by providing an insertion interface and a corresponding plug-in member. The specific connection manner between the first housing 111 and the second housing 112 is not limited herein, as long as the two can be detachably connected.

[0073] See Figure 9 and Figure 10 As shown, in some implementation manners, the first housing 111 is provided with a first positioning structure 1111, and the second housing 112 is provided with a second positioning structure 1121. The first positioning structure 1111 cooperates with the second positioning structure 1121 so that when the second housing 112 is mounted on the first housing 111, the first hole section 121 is coaxial with the second hole section 122. Through the cooperation of the positioning structures, the positioning accuracy of the first hole section 121 and the second hole section 122 is ensured, avoiding the deviation of the extending direction of the wire guiding channel formed by the communication of the first hole section 121 and the second hole section 122, and ensuring the accuracy of the wire feeding channel 120.

[0074] In some implementation manners, such as Figure 9As shown, the first positioning structure 1111 can be a positioning ring coaxially arranged with the first hole section 121, and the second positioning structure 1121 can be an annular positioning groove coaxially arranged with the second hole section 122. Among them, the outer diameter of the positioning ring corresponds to the size of the annular positioning groove. By inserting the second positioning structure 1121 into the first positioning structure 1111, the axes of the positioning ring and the annular positioning groove are aligned, so that the axis of the first hole section 121 formed by the first housing 111 is aligned with the axis of the second hole section 122 formed by the second housing 112. It can be understood that the first positioning structure 1111 can also be set as an annular positioning groove, and the second positioning structure 1121 is correspondingly set as a corresponding positioning ring.

[0075] In some other implementation manners, the first positioning structure 1111 can also be set as a positioning protrusion, and the second positioning structure 1121 is correspondingly set as a positioning hole. By inserting the positioning protrusion into the positioning hole, the positioning of the first housing 111 and the second housing 112 is realized. Of course, the specific structural forms of the first positioning structure 1111 and the second positioning structure 1121 are not limited to structures such as positioning rings and positioning holes, as long as the precise positioning of the first housing 111 and the second housing 112 can be achieved.

[0076] See Figure 1 As shown, in some implementation manners, the wire feeder 100 further includes a driving wheel 141 and a shaping wheel 142. The driving wheel 141 and the shaping wheel 142 enclose a shaping channel for the wire to pass through. The shaping channel is correspondingly arranged with the wire feeding channel 120. The driving wheel 141 is configured to drive the wire located in the shaping channel to move towards the wire feeding channel 120. The bent wire can be straightened by using the shaping channel formed by the driving wheel 141 and the shaping wheel 142.

[0077] Among them, in some implementation manners, the shaping wheel 142 includes an outer ring and an inner ring. The inner ring and the outer ring are coaxially arranged and fixedly connected. When the outer ring is in contact with the wire, the outer ring can be driven to rotate by the movement of the wire. The inner ring is a bearing, and a support rod is rotatably connected to the inner side of the bearing. The rotational friction of the outer ring can be reduced through the bearing.

[0078] In some implementation manners, an annular wire groove extending in the circumferential direction is provided on the outer contour of the driving wheel 141. The movement of the wire in the axial direction relative to the axis of the driving wheel 141 is restricted through the annular wire groove, so that the wire can accurately extend into the wire guiding channel after shaping.

[0079] In some implementation manners, a first annular wire groove extending in the circumferential direction is provided on the outer contour of the shaping wheel 142, a second annular wire groove 1411 extending in the circumferential direction is provided on the outer contour of the driving wheel 141, and the first annular wire groove and the second annular wire groove 1411 enclose the shaping channel. To avoid the wire from shifting when shaping the wire.

[0080] In other implementations, the second annular wire groove 1411 may be provided only at the outer contour of the driving wheel 141, and the outer contour of the truing wheel 142 may be provided as a smooth cylindrical surface, or the second annular wire groove 1411 may be provided only at the outer contour of the truing wheel 142, and the outer contour of the driving wheel 141 may be provided as a smooth cylindrical surface. In other words, the circumferentially extending annular wire groove is provided only on one of the driving wheel 141 or the truing wheel 142, and the other wheel body is provided as a conventional cylindrical surface, so as to press the welding wire into the annular wire groove.

[0081] In some implementations, a plurality of annular wire grooves of different depths may be provided on one of the shaping wheel 142 or the driving wheel 141, and the annular wire grooves are arranged at intervals along the axial direction of the wheel body, and the driving wheel 141 body is moved along the axial direction so that the annular wire grooves of corresponding sizes are aligned with the wire feeding channel 120. In other words, by providing a plurality of annular wire grooves of different depths, welding wires of different diameters can be adapted by adjusting the axial position of the wheel body.

[0082] See also Figure 1 As shown, in some implementations, the welding wire feeder 100 further includes an elastic member 143, which is connected to the shaping wheel 142, and the elastic member 143 is used to drive the shaping wheel 142 to move toward the driving wheel 141. The elastic force of the elastic member 143 can move the shaping wheel 142 toward the driving wheel 141, so that the shaping wheel 142 is pressed against the welding wire, so that the shaping wheel 142 can squeeze the welding wire and complete the shaping of the welding wire.

[0083] See also Figure 1 As shown, the welding wire feeder 100 includes a support bracket 144, on which a driving member 145 is mounted, and a driving wheel 141 is connected to the driving shaft of the driving member 145. The driving member 145 drives the driving wheel 141 to rotate, so that the driving wheel 141 pulls the welding wire to move along the wire feeding direction ( Figure 1 in the top-to-bottom direction).

[0084] A movable rod 147 is also installed on the support bracket 144, one end of the movable rod 147 is rotatably installed on the support bracket 144, and the other end of the movable rod 147 is also connected to the central axis of the shaping wheel 142. The inner ring of the shaping wheel 142 is a bearing installed on the central axis, and the outer ring of the shaping wheel 142 can rotate relative to the inner ring and is used to form a shaping channel for extruding the welding wire with the outer contour of the driving wheel 141.

[0085] The support bracket 144 is also provided with an elastic member 143, which is connected to a movable rod 147. The elastic member 143 moves the end of the movable rod 147 connected to the central axis toward one side of the driving wheel 141, so that the outer contour of the shaping wheel 142 can be closely attached to the welding wire outside the driving wheel 141.Figure 1 As shown, in some implementations, the elastic member 143 is a spring. It can be understood that in other implementations, the elastic member 143 can also be other elastic components such as elastic rubber bands.

[0086] In some implementations, the wire feeder 100 for welding wire further includes a wire spool 148 on which the welding wire is wound. Below the wire spool 148, a lead tube 146 is also provided, and the lead tube 146 is installed on the support bracket 144. The welding wire wound on the wire spool 148 is guided to the shaping wheel 142 through the lead tube 146.

[0087] In some implementations, the lead tube 146 is arranged between the shaping wheel 142 and the wire spool 148. As Figure 1 shown, the upper end of the lead tube 146 is a straight tube structure, and the lower end of the lead tube 146 is a tapered tube structure. That is to say, through the large-diameter end (the end facing the wire spool 148) of the lead tube 146, it is convenient to insert the welding wire, and through the small-diameter end (the end facing the shaping wheel 142) of the lead tube 146, it is convenient to guide the welding wire into the shaping channel between the shaping wheel 142 and the driving wheel 141.

[0088] In a second aspect, an embodiment of the present invention further provides a welding device, which includes the above-mentioned wire feeder 100 for welding wire. Since the wire feeder 100 including the cooling device 130 is installed, it can cool the wire feeding nozzle 110 during long-term welding work, and avoid blocking the wire feeding nozzle 110 due to the melting of the welding wire in the wire feeding nozzle 110.

[0089] Among them, the welding device can be a welding torch, a welding robot or other devices capable of completing welding work.

[0090] Although the present invention has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A wire feeder for welding wire, characterized in that, It includes: A wire feeding nozzle, a wire feeding channel is formed in the wire feeding nozzle, and the wire feeding channel is used for the welding wire to pass through; And A cooling device, the cooling device is connected to the wire feeding nozzle, and the cooling device is configured to introduce a cooling medium into the wire feeding channel to reduce the temperature in the wire feeding channel.

2. The welding wire feeder according to claim 1, wherein A gas guiding channel is further formed in the wire feeding nozzle, the gas guiding channel is communicated with the wire feeding channel, and the gas guiding channel is communicated with the cooling device, and the cooling medium is a cooling gas.

3. The welding wire feeder according to claim 2, wherein The wire feeding channel extends along the axial direction of the wire feeding nozzle, and the gas guiding channel extends along the radial direction of the wire feeding nozzle.

4. The welding wire feeder according to claim 2, wherein The pressure of the cooling medium introduced by the cooling device is 0.2MPa - 0.3MPa.

5. The welding wire feeder according to any one of claims 1-4, wherein A transfer member is detachably connected to the wire inlet end of the wire feeding nozzle, a wire conduit is installed on the transfer member, the inner diameter of the wire conduit corresponds to the outer diameter of the welding wire, the outer diameter of the wire conduit is smaller than the inner diameter of the wire feeding channel, and when the transfer member is connected to the wire feeding nozzle, the wire conduit is inserted into the wire feeding channel.

6. The welding wire feeder according to any one of claims 1-4, wherein The wire feeding nozzle includes a first housing and a second housing, and the second housing is detachably installed on the first housing; The wire feeding channel includes a first hole section and a second hole section, the first hole section is formed in the first housing, and the second hole section is formed in the second housing; When the second housing is installed on the first housing, the first hole section is communicated with the second hole section.

7. The wire feeder according to claim 6, characterized in that, The first housing is provided with a first positioning structure, the second housing is provided with a second positioning structure, and the first positioning structure cooperates with the second positioning structure so that the first hole section and the second hole section are coaxial when the second housing is installed on the first housing.

8. The welding wire feeder according to any one of claims 1-4, wherein It further includes a driving wheel and a shaping wheel, a shaping channel for the welding wire to pass through is formed between the driving wheel and the shaping wheel, the shaping channel is correspondingly arranged with the wire feeding channel, and the driving wheel is configured to drive the welding wire located in the shaping channel to move towards the wire feeding channel.

9. The welding wire feeder according to claim 8, wherein It further includes an elastic member, the elastic member is connected to the shaping wheel, and the elastic member is used to drive the shaping wheel to move towards the direction close to the driving wheel.

10. A welding device, characterized in that, It includes the welding wire feeder according to any one of claims 1-9.

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