Horizontal water tank lug welding machine

Abstract

The utility model discloses a horizontal water tank ear row welding machine, the row welding machine includes frame assembly, upper welding head mechanism, side welding head mechanism, walking mechanism and positioning fixture, the upper welding head mechanism and side welding head mechanism all install on frame assembly, walking mechanism installs on frame assembly, positioning fixture installs on the mobile platform of walking mechanism, and positioning fixture is used for fixing water tank. The horizontal water tank ear row welding machine provided in the application is moved as a whole through setting walking mechanism and drives positioning fixture and water tank, and cooperates with the upper welding head mechanism and the side welding head mechanism to realize the automatic positioning and welding of water tank ear support, and manual manual alignment and operation welding process are not needed, and only need operating personnel to complete workpiece feeding and discharging and accessory placement, and the labor intensity is greatly reduced, and the welding rhythm and production efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a horizontal water tank hanging ear welding machine. Background Technology

[0002] In modern manufacturing, the widespread application of automated welding equipment has significantly improved production efficiency, product consistency, and operational safety. Particularly in industries such as home appliances, automobiles, and HVAC, the number of batch welding tasks involving metal structural components is increasing daily, and traditional manual welding methods can no longer meet the demands for high-efficiency, high-quality, and low-cost production. Therefore, developing specialized automated welding equipment to integrate and intelligently manage processes such as workpiece positioning, clamping, welding, and blanking has become an important direction for technological upgrading in these industries.

[0003] However, in the production of water tank products, the welding of their mounting brackets is still generally done manually. Operators need to move the water tank body and bracket accessories one by one to the welding machine's working area, and then manually align them before spot welding or row welding. This method is not only labor-intensive and slow in production, but also suffers from significant fluctuations in weld quality due to human factors such as positioning deviations, uneven pressure, and inconsistent welding time control. Defects such as incomplete welds, misaligned welds, or insufficient penetration are prone to occur, seriously affecting the structural strength and appearance consistency of the product. Summary of the Invention

[0004] This application provides a horizontal water tank hanging lug welding machine, which solves the technical problems of low efficiency, unstable welding quality and high labor intensity in the prior art where the welding of water tank hanging lug brackets depends on manual operation.

[0005] This application provides a horizontal water tank hanging lug welding machine, the welding machine comprising: Rack assembly; The upper welding head mechanism and the side welding head mechanism are both mounted on the frame assembly; A traveling mechanism, which is mounted on the frame assembly; A positioning clamp is installed on the moving platform of the walking mechanism and is used to fix the water tank.

[0006] In some embodiments, the traveling mechanism includes a linear guide rail, a linear slider, a lead screw, a nut, and a servo motor. The servo motor is fixedly mounted on the frame assembly, the lead screw is rotatably mounted on the frame assembly, and the output end of the servo motor is fixedly connected to the lead screw. The nut is threadedly engaged with the lead screw. The linear guide rail is fixedly mounted on the frame assembly. There are two linear guide rails, symmetrically arranged on both sides of the lead screw. The linear slider is slidably mounted on the linear guide rail. The positioning fixture is fixedly connected to the linear slider and the nut.

[0007] In some embodiments, the walking mechanism further includes a bellows cover, which spans across the two linear guides. One end of the bellows cover is fixedly disposed at the end position of the linear guide, and the other end of the bellows cover is fixedly connected to the positioning fixture.

[0008] In some embodiments, the positioning fixture includes a base plate and a positioning plate. The base plate is fixedly connected to the linear slider and the nut. The positioning plate is fixedly disposed on the base plate and is disposed corresponding to the side of the water tank. The positioning plate is provided with a right-angle notch, which is used to position the water tank.

[0009] In some embodiments, insulating pads are fixedly provided on the side and bottom surfaces of the right-angle notch, which are used to insulate the water tank from the positioning plate during the welding of the lugs.

[0010] In some embodiments, the welding machine further includes a power supply and a controller, both of which are fixedly mounted on the frame assembly. The power supply is electrically connected to the controller, and the upper welding head mechanism and the side welding head mechanism are both electrically connected to the power supply and the controller.

[0011] In some embodiments, the upper welding head mechanism includes: The upper welding head body is fixedly mounted on the frame assembly; The first cylinder is fixedly mounted on the upper welding head body and is electrically connected to the controller. An electrode arm is fixedly mounted on the output end of the first cylinder via an upper platform. A first electrode holder, which is fixedly connected to the electrode arm; The upper electrode is fixedly mounted on the first electrode holder and is electrically connected to the power supply. A first infrared sensor is fixedly mounted on the upper welding head body and is electrically connected to the controller.

[0012] In some embodiments, the upper welding head mechanism further includes an upper conductive copper plate and an upper welding head copper strip. One end of the upper welding head copper strip is fixedly disposed on the upper platform and electrically connected to the upper electrode, and the other end of the upper welding head copper strip is electrically connected to the power supply through the first conductive copper plate.

[0013] In some embodiments, the side welding head mechanism includes: The second cylinder is fixedly mounted on the frame assembly; The second electrode holder is fixedly mounted on the output end of the second cylinder via a side platform; A side electrode is fixedly mounted on the second electrode holder and is electrically connected to the power supply. The second infrared sensor is fixedly mounted on the rack assembly and is electrically connected to the controller.

[0014] In some embodiments, the side welding head mechanism further includes a side conductive copper plate and a side welding head copper strip. One end of the side welding head copper strip is fixedly disposed on the side platform and electrically connected to the side electrode, and the other end of the side welding head copper strip is electrically connected to the power supply through a second conductive copper plate.

[0015] The beneficial effects of this application are as follows: The horizontal water tank hanging lug welding machine provided in this application, by setting up a walking mechanism to drive the positioning fixture and the water tank as a whole to move, and in coordination with the welding head mechanism and the side welding head mechanism, realizes the automatic positioning and welding of the water tank hanging lug bracket, eliminating the need for manual alignment and operation of the welding process; only the operator needs to complete the loading and unloading of workpieces and placement of accessories, which greatly reduces labor intensity and improves welding cycle and production efficiency. Attached Figure Description

[0016] To illustrate this utility model more clearly, a simple introduction is provided. Obviously, the accompanying drawings described below are only some embodiments of this utility model.

[0017] Figure 1 A schematic diagram of the overall structure of a horizontal water tank hanging lug welding machine provided in this application; Figure 2 This application provides a structural schematic diagram of the traveling mechanism in a horizontal water tank hanging lug welding machine; Figure 3 A schematic diagram of the frame assembly in a horizontal water tank hanging lug welding machine provided in this application; Figure 4 A schematic diagram of the upper welding head mechanism in a horizontal water tank hanging lug welding machine provided in this application; Figure 5A schematic diagram of the lower welding head mechanism in a horizontal water tank hanging lug welding machine provided in this application; Figure 6 This is a schematic diagram of the positioning fixture in a horizontal water tank hanging ear welding machine provided in this application.

[0018] Among them, 10. Rack assembly; 20. Upper welding head mechanism; 21. Upper welding head body; 22. First cylinder; 23. Electrode arm; 24. Upper platform; 25. First electrode seat; 26. Upper electrode; 27. First infrared sensor; 28. Upper conductive copper plate; 29. ​​Upper welding head copper strip; 30. Side welding head mechanism; 31. Second cylinder; 32. Second electrode holder; 33. Side platform; 34. Side electrode; 35. Second infrared sensor; 36. Side conductive copper plate; 37. Side welding head copper strip; 40. Traveling mechanism; 41. Linear guide rail; 42. Linear slider; 43. Lead screw; 44. Nut; 45. Servo motor; 46. Bellows cover; 50. Positioning fixture; 51. Base plate; 52. Positioning plate; 53. Right-angle notch; 54. Insulating pad; 60. Power supply; 70. Controller; 80. Gas storage tank. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0021] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0022] This application provides a horizontal water tank hanging ear welding machine, which solves the technical problems of low efficiency, unstable welding quality and high labor intensity in the prior art where the welding of water tank hanging ear brackets relies on manual operation.

[0023] The technical solution in this application is to solve the above-mentioned technical problems, and the general idea is as follows: like Figure 1 As shown, this application provides a horizontal water tank hanging lug welding machine, which includes a frame assembly 10, an upper welding head mechanism 20, a side welding head mechanism 30, a traveling mechanism 40, and a positioning fixture 50; the upper welding head mechanism 20 and the side welding head mechanism 30 are both mounted on the frame assembly 10; the traveling mechanism 40 is mounted on the frame assembly 10; the positioning fixture 50 is mounted on the moving platform of the traveling mechanism 40, and the positioning fixture 50 is used to fix the water tank.

[0024] By setting up a walking mechanism 40 to drive the positioning fixture 50 and the water tank to move as a whole, and cooperating with the welding head mechanism 20 and the side welding head mechanism 30, the automatic positioning and welding of the water tank hanging ear bracket is realized, eliminating the need for manual alignment and operation of the welding process; only the operator needs to complete the loading and unloading of workpieces and placement of accessories, which greatly reduces labor intensity and improves welding cycle and production efficiency.

[0025] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0026] Preferred, such as Figures 1-3 As shown, the walking mechanism 40 includes a linear guide rail 41, a linear slider 42, a lead screw 43, a nut 44, and a servo motor 45. The servo motor 45 is fixedly mounted on the frame assembly 10. The lead screw 43 is rotatably mounted on the frame assembly 10, and the output end of the servo motor 45 is fixedly connected to the lead screw 43. The nut 44 is threadedly engaged with the lead screw 43. The linear guide rail 41 is fixedly mounted on the frame assembly 10. There are two linear guide rails 41, which are symmetrically arranged on both sides of the lead screw 43. The linear slider 42 is slidably mounted on the linear guide rail 41. The positioning fixture 50 is fixedly connected to the linear slider 42 and the nut 44.

[0027] The servo motor 45 drives the lead screw 43 to rotate, which in turn drives the threaded nut 44 to move linearly. Combined with the symmetrically arranged linear guides 41 and linear sliders 42 on both sides, the positioning fixture 50 achieves smooth and precise reciprocating movement under the guidance system of high rigidity and low friction. The two linear guides 41 are symmetrically arranged on both sides of the lead screw 43, which effectively balances the load distribution and improves the stability of operation and the accuracy of positioning repeatability. At the same time, the closed-loop control of the servo motor 45 ensures the precise controllability of the walking position, providing a reliable basis for station switching for the welding of water tank lugs, thereby ensuring the consistency of the welding process and the efficient execution of the automated cycle.

[0028] Furthermore, the walking mechanism 40 also includes a bellows cover 46, which spans across the two linear guide rails 41. One end of the bellows cover 46 is fixedly located at the end of the linear guide rail 41, and the other end of the bellows cover 46 is fixedly connected to the positioning clamp 50. The bellows cover 46 is made of heat-resistant and flame-retardant PVC material, covering the outer and upper areas of the two linear guide rails 41, and both ends are fixed to the ends of the linear guide rails 41 and the positioning clamp 50 respectively by metal pressure plates.

[0029] By setting a bellows cover 46 between two linear guide rails 41 in the walking mechanism 40, with one end fixed to the end of the guide rail and the other end connected to the positioning fixture 50, the positioning fixture 50 can dynamically cover the precision transmission components such as the guide rail and lead screw 43 as the slider moves. This effectively prevents metal splashes, dust, oil or cooling water vapor generated during welding from entering the guide rail pair and the lead screw 43 nut 44 pair, thereby avoiding wear, jamming or corrosion of moving parts, significantly improving the operational reliability, service life and maintenance cycle of the walking mechanism 40, and ensuring long-term stable operation of the equipment.

[0030] Preferred, such as Figure 1 , Figure 6 As shown, the positioning fixture 50 includes a base plate 51 and a positioning plate 52. The base plate 51 is fixedly connected to the linear slider 42 and the nut 44. The positioning plate 52 is fixedly mounted on the base plate 51. The positioning plate 52 is positioned corresponding to the side of the water tank. The positioning plate 52 is provided with a right-angle notch 53, which is used to position the water tank.

[0031] By setting a right-angle notch 53 on the positioning fixture 50 that matches the side profile of the water tank, the water tank can be quickly and accurately positioned on the fixture, ensuring that the water tank is in the same spatial position relative to the upper welding head and the side welding head each time it is clamped. This simplifies manual alignment operations, avoids welding misalignment or incomplete welding caused by placement deviations, significantly improves welding repeatability and product consistency, and also improves loading and unloading efficiency.

[0032] Furthermore, insulating pads 54 are fixedly provided on the side and bottom surfaces of the right-angle notch 53, which are used to insulate the water tank from the positioning plate 52 during the welding of the lugs.

[0033] An insulating pad 54, such as high-temperature resistant bakelite, ceramic fiber, or special engineering plastic, is installed on the contact surface of the right-angle notch 53. This effectively blocks the welding current from forming an unexpected circuit through the positioning plate 52, preventing current shunting, sparking, or local overheating that could damage the workpiece or fixture. At the same time, it avoids weld point misalignment, adhesion, or fixture erosion caused by direct metal-to-metal contact. This not only ensures that welding energy is concentrated in the lug connection area, improving welding quality, but also extends the service life of the fixture and reduces maintenance costs.

[0034] Preferred, such as Figure 1 As shown, the welding machine also includes a power supply 60 and a controller 70. The power supply 60 and the controller 70 are both fixedly mounted on the frame assembly 10. The power supply 60 is electrically connected to the controller 70. The upper welding head mechanism 20 and the side welding head mechanism 30 are both electrically connected to the power supply 60 and the controller 70.

[0035] Furthermore, such as Figure 1 , Figure 4 As shown, the upper welding head mechanism 20 includes an upper welding head body 21, a first cylinder 22, an electrode arm 23, a first electrode seat 25, an upper electrode 26, and a first infrared sensor 27. The upper welding head body 21 is fixedly mounted on the frame assembly 10. The first cylinder 22 is fixedly mounted on the upper welding head body 21 and is electrically connected to the controller 70. The electrode arm 23 is fixedly mounted on the output end of the first cylinder 22 via an upper platform 24. The first electrode seat 25 is fixedly connected to the electrode arm 23. The upper electrode 26 is fixedly mounted on the first electrode seat 25 and is electrically connected to the power supply 60. The first infrared sensor 27 is fixedly mounted on the upper welding head body 21 and is electrically connected to the controller 70.

[0036] Under the command of the controller 70, the first cylinder 22 drives the electrode arm 23 to precisely rise and fall, causing the upper electrode 26 to reliably press against the water tank hanging lug, ensuring stable contact pressure during welding. The upper electrode 26 is powered by the power supply 60 to complete high-quality resistance welding. The first infrared sensor 27, fixed to the upper welding head body 21, can detect in real time whether the upper electrode 26 has been correctly lowered into place or whether there are any abnormalities such as missing or misaligned workpieces, and feeds the signal back to the controller 70 to trigger a shutdown or alarm, thereby effectively preventing dry welding, off-center welding or equipment malfunction, and improving the reliability and safety of the welding process.

[0037] Furthermore, the upper welding head mechanism 20 also includes an upper conductive copper plate 28 and an upper welding head copper strip 29. One end of the upper welding head copper strip 29 is fixedly disposed on the upper platform 24 and electrically connected to the upper electrode 26, and the other end of the upper welding head copper strip 29 is electrically connected to the power supply 60 through the first conductive copper plate.

[0038] One end of the upper welding head copper strip 29 is connected to the upper electrode 26, and the other end is reliably connected to the intermediate frequency power supply 60 via the first conductive copper plate. While ensuring efficient and stable conduction of large current, such as 30kA, its flexible structure can freely extend or swing as the upper platform 24 driven by the first cylinder 22 moves up and down, avoiding the breakage or poor contact of rigid conductive parts due to stress concentration during reciprocating motion.

[0039] Preferred, such as Figure 1 , Figure 5 As shown, the side welding head mechanism 30 includes a second cylinder 31, a second electrode holder 32, a side electrode 34, and a second infrared sensor 35. The second cylinder 31 is fixedly mounted on the frame assembly 10. The second electrode holder 32 is fixedly mounted on the output end of the second cylinder 31 via a side platform 33. The side electrode 34 is fixedly mounted on the second electrode holder 32 and is electrically connected to the power supply 60. The second infrared sensor 35 is fixedly mounted on the frame assembly 10 and is electrically connected to the controller 70.

[0040] Under the control of the controller 70, the second cylinder 31 pushes the side platform 33 and the side electrode 34 to stably press the hanging ear bracket on the side of the water tank, ensuring consistent welding contact pressure. The side electrode 34 is connected to the power supply 60, and after being pressed in place, it is energized to complete the resistance welding. At the same time, the second infrared sensor 35, which is fixed on the frame assembly 10, can non-contactly detect whether the side electrode 34 is properly extended, whether the workpiece is in place, or whether there is any assembly abnormality, and feeds the signal back to the controller 70 for interlock control or fault warning, effectively avoiding missed welding, off-center welding, or equipment idle stroke operation, and improving the reliability of side welding.

[0041] Furthermore, the side welding head mechanism 30 also includes a side conductive copper plate 36 and a side welding head copper strip 37. One end of the side welding head copper strip 37 is fixedly disposed on the side platform 33 and electrically connected to the side electrode 34, and the other end of the side welding head copper strip 37 is electrically connected to the power supply 60 through a second conductive copper plate.

[0042] One end of the copper strip 37 of the side welding head is connected to the side electrode 34 on the side platform 33 that moves with the second cylinder 31, and the other end is reliably connected to the intermediate frequency power supply 60 through the second conductive copper plate. While ensuring efficient and stable conduction of large current, its flexible structure can adapt to the reciprocating motion of the side electrode 34 in the horizontal direction, avoiding fatigue fracture, loose contact or arc erosion caused by repeated expansion and contraction in the traditional rigid conductive method.

[0043] like Figure 1 As shown, the welding machine also includes an air tank 80, which is used to provide the first cylinder 22 and the second cylinder 31 with the required amount of compressed air to avoid slow operation due to insufficient air supply from the pipeline.

[0044] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0045] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A horizontal water tank hanging lug welding machine, characterized in that, The welding machine includes: Rack assembly; The upper welding head mechanism and the side welding head mechanism are both mounted on the frame assembly; A traveling mechanism, which is mounted on the frame assembly; A positioning clamp is installed on the moving platform of the walking mechanism and is used to fix the water tank.

2. The horizontal water tank hanging lug welding machine as described in claim 1, characterized in that, The traveling mechanism includes a linear guide rail, a linear slider, a lead screw, a nut, and a servo motor. The servo motor is fixedly mounted on the frame assembly, and the lead screw is rotatably mounted on the frame assembly. The output end of the servo motor is fixedly connected to the lead screw. The nut is threadedly engaged with the lead screw. The linear guide rail is fixedly mounted on the frame assembly. There are two linear guide rails, symmetrically arranged on both sides of the lead screw. The linear slider is slidably mounted on the linear guide rail. The positioning fixture is fixedly connected to the linear slider and the nut.

3. The horizontal water tank hanging lug welding machine as described in claim 2, characterized in that, The walking mechanism also includes a bellows cover, which spans across the two linear guide rails. One end of the bellows cover is fixedly located at the end of the linear guide rail, and the other end of the bellows cover is fixedly connected to the positioning fixture.

4. The horizontal water tank hanging lug welding machine as described in claim 2, characterized in that, The positioning fixture includes a base plate and a positioning plate. The base plate is fixedly connected to the linear slider and the nut. The positioning plate is fixedly mounted on the base plate and is positioned corresponding to the side of the water tank. The positioning plate has a right-angle notch for positioning the water tank.

5. The horizontal water tank hanging lug welding machine as described in claim 4, characterized in that, Insulating pads are fixedly installed on the sides and bottom of the right-angle notch, which are used to insulate the water tank from the positioning plate during the welding of the lugs.

6. The horizontal water tank hanging lug welding machine as described in claim 1, characterized in that, The welding machine also includes a power supply and a controller, both of which are fixedly mounted on the frame assembly. The power supply is electrically connected to the controller, and the upper welding head mechanism and the side welding head mechanism are both electrically connected to the power supply and the controller.

7. The horizontal water tank hanging lug welding machine as described in claim 6, characterized in that, The upper welding head mechanism includes: The upper welding head body is fixedly mounted on the frame assembly; The first cylinder is fixedly mounted on the upper welding head body and is electrically connected to the controller. An electrode arm is fixedly mounted on the output end of the first cylinder via an upper platform. A first electrode holder, which is fixedly connected to the electrode arm; The upper electrode is fixedly mounted on the first electrode holder and is electrically connected to the power supply. A first infrared sensor is fixedly mounted on the upper welding head body and is electrically connected to the controller.

8. The horizontal water tank hanging lug welding machine as described in claim 7, characterized in that, The upper welding head mechanism also includes an upper conductive copper plate and an upper welding head copper strip. One end of the upper welding head copper strip is fixedly mounted on the upper platform and electrically connected to the upper electrode. The other end of the upper welding head copper strip is electrically connected to the power supply through the first conductive copper plate.

9. The horizontal water tank hanging lug welding machine as described in claim 6, characterized in that, The side welding head mechanism includes: The second cylinder is fixedly mounted on the frame assembly; The second electrode holder is fixedly mounted on the output end of the second cylinder via a side platform; A side electrode is fixedly mounted on the second electrode holder and is electrically connected to the power supply. The second infrared sensor is fixedly mounted on the rack assembly and is electrically connected to the controller.

10. The horizontal water tank hanging lug welding machine as described in claim 9, characterized in that, The side welding head mechanism also includes a side conductive copper plate and a side welding head copper strip. One end of the side welding head copper strip is fixedly mounted on the side platform and electrically connected to the side electrode. The other end of the side welding head copper strip is electrically connected to the power supply through a second conductive copper plate.

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